pax_global_header00006660000000000000000000000064124670120310014506gustar00rootroot0000000000000052 comment=0813335d2e49291e7ab6a4365cec2baa05813eda trace-cmd-2.5.3/000077500000000000000000000000001246701203100133545ustar00rootroot00000000000000trace-cmd-2.5.3/COPYING000066400000000000000000000431031246701203100144100ustar00rootroot00000000000000 GNU GENERAL PUBLIC LICENSE Version 2, June 1991 Copyright (C) 1989, 1991 Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA Everyone is permitted to copy and distribute verbatim copies of this license document, but changing it is not allowed. Preamble The licenses for most software are designed to take away your freedom to share and change it. By contrast, the GNU General Public License is intended to guarantee your freedom to share and change free software--to make sure the software is free for all its users. This General Public License applies to most of the Free Software Foundation's software and to any other program whose authors commit to using it. (Some other Free Software Foundation software is covered by the GNU Lesser General Public License instead.) You can apply it to your programs, too. When we speak of free software, we are referring to freedom, not price. Our General Public Licenses are designed to make sure that you have the freedom to distribute copies of free software (and charge for this service if you wish), that you receive source code or can get it if you want it, that you can change the software or use pieces of it in new free programs; and that you know you can do these things. To protect your rights, we need to make restrictions that forbid anyone to deny you these rights or to ask you to surrender the rights. These restrictions translate to certain responsibilities for you if you distribute copies of the software, or if you modify it. For example, if you distribute copies of such a program, whether gratis or for a fee, you must give the recipients all the rights that you have. You must make sure that they, too, receive or can get the source code. And you must show them these terms so they know their rights. We protect your rights with two steps: (1) copyright the software, and (2) offer you this license which gives you legal permission to copy, distribute and/or modify the software. Also, for each author's protection and ours, we want to make certain that everyone understands that there is no warranty for this free software. If the software is modified by someone else and passed on, we want its recipients to know that what they have is not the original, so that any problems introduced by others will not reflect on the original authors' reputations. Finally, any free program is threatened constantly by software patents. We wish to avoid the danger that redistributors of a free program will individually obtain patent licenses, in effect making the program proprietary. To prevent this, we have made it clear that any patent must be licensed for everyone's free use or not licensed at all. The precise terms and conditions for copying, distribution and modification follow. GNU GENERAL PUBLIC LICENSE TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION 0. This License applies to any program or other work which contains a notice placed by the copyright holder saying it may be distributed under the terms of this General Public License. The "Program", below, refers to any such program or work, and a "work based on the Program" means either the Program or any derivative work under copyright law: that is to say, a work containing the Program or a portion of it, either verbatim or with modifications and/or translated into another language. (Hereinafter, translation is included without limitation in the term "modification".) Each licensee is addressed as "you". Activities other than copying, distribution and modification are not covered by this License; they are outside its scope. The act of running the Program is not restricted, and the output from the Program is covered only if its contents constitute a work based on the Program (independent of having been made by running the Program). Whether that is true depends on what the Program does. 1. You may copy and distribute verbatim copies of the Program's source code as you receive it, in any medium, provided that you conspicuously and appropriately publish on each copy an appropriate copyright notice and disclaimer of warranty; keep intact all the notices that refer to this License and to the absence of any warranty; and give any other recipients of the Program a copy of this License along with the Program. You may charge a fee for the physical act of transferring a copy, and you may at your option offer warranty protection in exchange for a fee. 2. You may modify your copy or copies of the Program or any portion of it, thus forming a work based on the Program, and copy and distribute such modifications or work under the terms of Section 1 above, provided that you also meet all of these conditions: a) You must cause the modified files to carry prominent notices stating that you changed the files and the date of any change. b) You must cause any work that you distribute or publish, that in whole or in part contains or is derived from the Program or any part thereof, to be licensed as a whole at no charge to all third parties under the terms of this License. c) If the modified program normally reads commands interactively when run, you must cause it, when started running for such interactive use in the most ordinary way, to print or display an announcement including an appropriate copyright notice and a notice that there is no warranty (or else, saying that you provide a warranty) and that users may redistribute the program under these conditions, and telling the user how to view a copy of this License. (Exception: if the Program itself is interactive but does not normally print such an announcement, your work based on the Program is not required to print an announcement.) These requirements apply to the modified work as a whole. If identifiable sections of that work are not derived from the Program, and can be reasonably considered independent and separate works in themselves, then this License, and its terms, do not apply to those sections when you distribute them as separate works. But when you distribute the same sections as part of a whole which is a work based on the Program, the distribution of the whole must be on the terms of this License, whose permissions for other licensees extend to the entire whole, and thus to each and every part regardless of who wrote it. Thus, it is not the intent of this section to claim rights or contest your rights to work written entirely by you; rather, the intent is to exercise the right to control the distribution of derivative or collective works based on the Program. In addition, mere aggregation of another work not based on the Program with the Program (or with a work based on the Program) on a volume of a storage or distribution medium does not bring the other work under the scope of this License. 3. You may copy and distribute the Program (or a work based on it, under Section 2) in object code or executable form under the terms of Sections 1 and 2 above provided that you also do one of the following: a) Accompany it with the complete corresponding machine-readable source code, which must be distributed under the terms of Sections 1 and 2 above on a medium customarily used for software interchange; or, b) Accompany it with a written offer, valid for at least three years, to give any third party, for a charge no more than your cost of physically performing source distribution, a complete machine-readable copy of the corresponding source code, to be distributed under the terms of Sections 1 and 2 above on a medium customarily used for software interchange; or, c) Accompany it with the information you received as to the offer to distribute corresponding source code. (This alternative is allowed only for noncommercial distribution and only if you received the program in object code or executable form with such an offer, in accord with Subsection b above.) The source code for a work means the preferred form of the work for making modifications to it. For an executable work, complete source code means all the source code for all modules it contains, plus any associated interface definition files, plus the scripts used to control compilation and installation of the executable. However, as a special exception, the source code distributed need not include anything that is normally distributed (in either source or binary form) with the major components (compiler, kernel, and so on) of the operating system on which the executable runs, unless that component itself accompanies the executable. If distribution of executable or object code is made by offering access to copy from a designated place, then offering equivalent access to copy the source code from the same place counts as distribution of the source code, even though third parties are not compelled to copy the source along with the object code. 4. You may not copy, modify, sublicense, or distribute the Program except as expressly provided under this License. Any attempt otherwise to copy, modify, sublicense or distribute the Program is void, and will automatically terminate your rights under this License. However, parties who have received copies, or rights, from you under this License will not have their licenses terminated so long as such parties remain in full compliance. 5. You are not required to accept this License, since you have not signed it. However, nothing else grants you permission to modify or distribute the Program or its derivative works. These actions are prohibited by law if you do not accept this License. Therefore, by modifying or distributing the Program (or any work based on the Program), you indicate your acceptance of this License to do so, and all its terms and conditions for copying, distributing or modifying the Program or works based on it. 6. Each time you redistribute the Program (or any work based on the Program), the recipient automatically receives a license from the original licensor to copy, distribute or modify the Program subject to these terms and conditions. You may not impose any further restrictions on the recipients' exercise of the rights granted herein. You are not responsible for enforcing compliance by third parties to this License. 7. If, as a consequence of a court judgment or allegation of patent infringement or for any other reason (not limited to patent issues), conditions are imposed on you (whether by court order, agreement or otherwise) that contradict the conditions of this License, they do not excuse you from the conditions of this License. If you cannot distribute so as to satisfy simultaneously your obligations under this License and any other pertinent obligations, then as a consequence you may not distribute the Program at all. For example, if a patent license would not permit royalty-free redistribution of the Program by all those who receive copies directly or indirectly through you, then the only way you could satisfy both it and this License would be to refrain entirely from distribution of the Program. If any portion of this section is held invalid or unenforceable under any particular circumstance, the balance of the section is intended to apply and the section as a whole is intended to apply in other circumstances. It is not the purpose of this section to induce you to infringe any patents or other property right claims or to contest validity of any such claims; this section has the sole purpose of protecting the integrity of the free software distribution system, which is implemented by public license practices. Many people have made generous contributions to the wide range of software distributed through that system in reliance on consistent application of that system; it is up to the author/donor to decide if he or she is willing to distribute software through any other system and a licensee cannot impose that choice. This section is intended to make thoroughly clear what is believed to be a consequence of the rest of this License. 8. If the distribution and/or use of the Program is restricted in certain countries either by patents or by copyrighted interfaces, the original copyright holder who places the Program under this License may add an explicit geographical distribution limitation excluding those countries, so that distribution is permitted only in or among countries not thus excluded. In such case, this License incorporates the limitation as if written in the body of this License. 9. The Free Software Foundation may publish revised and/or new versions of the General Public License from time to time. Such new versions will be similar in spirit to the present version, but may differ in detail to address new problems or concerns. Each version is given a distinguishing version number. If the Program specifies a version number of this License which applies to it and "any later version", you have the option of following the terms and conditions either of that version or of any later version published by the Free Software Foundation. If the Program does not specify a version number of this License, you may choose any version ever published by the Free Software Foundation. 10. If you wish to incorporate parts of the Program into other free programs whose distribution conditions are different, write to the author to ask for permission. For software which is copyrighted by the Free Software Foundation, write to the Free Software Foundation; we sometimes make exceptions for this. Our decision will be guided by the two goals of preserving the free status of all derivatives of our free software and of promoting the sharing and reuse of software generally. NO WARRANTY 11. BECAUSE THE PROGRAM IS LICENSED FREE OF CHARGE, THERE IS NO WARRANTY FOR THE PROGRAM, TO THE EXTENT PERMITTED BY APPLICABLE LAW. EXCEPT WHEN OTHERWISE STATED IN WRITING THE COPYRIGHT HOLDERS AND/OR OTHER PARTIES PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. THE ENTIRE RISK AS TO THE QUALITY AND PERFORMANCE OF THE PROGRAM IS WITH YOU. SHOULD THE PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF ALL NECESSARY SERVICING, REPAIR OR CORRECTION. 12. IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MAY MODIFY AND/OR REDISTRIBUTE THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES, INCLUDING ANY GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED TO LOSS OF DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER PROGRAMS), EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES. END OF TERMS AND CONDITIONS How to Apply These Terms to Your New Programs If you develop a new program, and you want it to be of the greatest possible use to the public, the best way to achieve this is to make it free software which everyone can redistribute and change under these terms. To do so, attach the following notices to the program. It is safest to attach them to the start of each source file to most effectively convey the exclusion of warranty; and each file should have at least the "copyright" line and a pointer to where the full notice is found. Copyright (C) This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version. This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with this program; if not, write to the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. Also add information on how to contact you by electronic and paper mail. If the program is interactive, make it output a short notice like this when it starts in an interactive mode: Gnomovision version 69, Copyright (C) year name of author Gnomovision comes with ABSOLUTELY NO WARRANTY; for details type `show w'. This is free software, and you are welcome to redistribute it under certain conditions; type `show c' for details. The hypothetical commands `show w' and `show c' should show the appropriate parts of the General Public License. Of course, the commands you use may be called something other than `show w' and `show c'; they could even be mouse-clicks or menu items--whatever suits your program. You should also get your employer (if you work as a programmer) or your school, if any, to sign a "copyright disclaimer" for the program, if necessary. Here is a sample; alter the names: Yoyodyne, Inc., hereby disclaims all copyright interest in the program `Gnomovision' (which makes passes at compilers) written by James Hacker. , 1 April 1989 Ty Coon, President of Vice This General Public License does not permit incorporating your program into proprietary programs. If your program is a subroutine library, you may consider it more useful to permit linking proprietary applications with the library. If this is what you want to do, use the GNU Lesser General Public License instead of this License. trace-cmd-2.5.3/COPYING.LIB000066400000000000000000000636501246701203100150260ustar00rootroot00000000000000 GNU LESSER GENERAL PUBLIC LICENSE Version 2.1, February 1999 Copyright (C) 1991, 1999 Free Software Foundation, Inc. 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA Everyone is permitted to copy and distribute verbatim copies of this license document, but changing it is not allowed. [This is the first released version of the Lesser GPL. It also counts as the successor of the GNU Library Public License, version 2, hence the version number 2.1.] Preamble The licenses for most software are designed to take away your freedom to share and change it. By contrast, the GNU General Public Licenses are intended to guarantee your freedom to share and change free software--to make sure the software is free for all its users. This license, the Lesser General Public License, applies to some specially designated software packages--typically libraries--of the Free Software Foundation and other authors who decide to use it. You can use it too, but we suggest you first think carefully about whether this license or the ordinary General Public License is the better strategy to use in any particular case, based on the explanations below. When we speak of free software, we are referring to freedom of use, not price. 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KernelShark

Table of Contents

Introduction

The Graph View

  • Zooming In
  • Zooming Out
  • Graph Markers
  • Graph Cursor
  • Graph Plots
  • Task Plots
  • CPU Plots

    • The List View

  • Selecting an event
  • Graph follows toggle

    • Filters

  • Task Filter
  • Event Filter
  • Advance Event Filter

    • Introduction

    KernelShark is a front end reader of trace-cmd(1) output. "trace-cmd record" and "trace-cmd extract" create a trace.dat (trace-cmd.dat(5)) file. kernelshark can read this file and produce a graph and list view of its data.

    The application has two main viewing areas split by a paned divider. The top half is a graphical display of the data and the bottom half is a list view of each event. Underneath the menu bar is the graph information area:

    Graph Info Area

    The graph information line displays the timestamp of various locations. The Pointer: shows the timestamp of where the mouse pointer is. The Cursor: is the timestamp of the cursor location. To select a cursor location, double click on the graph. Marker A is set with a left mouse click and Marker B is set with a with a left mouse click while holding down the shift key.

    The graph is broken into two parts, the plot title section:

    Plot Title

    and the plot area:

    The plot area contains the data of the given plot, where plots can be per CPU or per task. The top of the plot area shows a timeline. The numbers in the timeline are seconds. The time in the timeline is taken from the timestamps within the trace.dat file which are architecture dependent. The time usually is the timestamp from when the system started.

    Below the graph is the list area.

    List Area

    The list area contains the Page of the list. The list can hold a maximum of 1 million entries per page. If the trace data contains more than a million entries, then the list will have more than one page.

    The list area also contains a search field to search for elements in the list.

    The Graph View

    The graph view of kernelshark shows graphical plots of the data stored in the trace.dat file. The data plots are per CPU or per task. When there are too many events within the resolution of the graph, the plots will appear as a rainbow colored bar. To make more sense out of the graphs, you need to zoom into a given location to see the details of that time frame more clearly.

    Zooming In

    To zoom in, left mouse click and hold and then drag the mouse right, release to zoom. When you click the left mouse button a line will appear and stay at that location. When you move the mouse to the right, another line appears and will follow the mouse. When you release the mouse button, the area between the two lines become the new width of the screen. That is, the graph zooms in until the lines match the width of the screen. This allows you to zoom into a specific location.

    The area that you selected will now become the new width of the viewable area. The smaller the selection, the deeper the zoom. Note, that you must select 10 pixels to zoom in. Less than 10 pixels will cancel the zoom. You can continue zooming in until you get more details.

    To save on resources, when zooming in, the beginning and end of the full trace may not be reachable with the horizontal scroll bar. If a plot contains no events within the reachable area, then the line will be empty, as CPU 1 is in the above image.

    CPU 0 shows two tasks that were running. One task is given a pink/red color and the other a green color. The think colored horizontal bar represents a task other than idle was running. The small lines that jet out of the bar are where events occur.

    If you zoom in enough such that a single event has enough room between itself and other events, the type of event and the name and PID of the task that was running will appear over the event.

    Zooming Out

    To zoom back out, left mouse click and hold and then drag the mouse left. This time the width between the two lines will become a single pixel. The farther apart the lines are, the farther the zoom out will be. Zoom out will stop at the width of the full trace.

    When the mouse is over an event, a tool tip will appear showing the event name, the latency data, the event info, the timestamp and the task name and task process ID.

    Graph Markers

    There are two markers that can be placed on the graph as well as a cursor. Marker A is set by a left mouse click. When a marker is set, the graph info area will be updated. Marker A is represented by a green line:

    To set Marker B, press and hold the shift key and click the left mouse button. Marker B will show up in red.

    When both the A and B markers are set, the graph info area will show the timestamp of where the A and B markers are, as well as the difference between the two. All timestamps are in seconds, with a resolution of microseconds.

    Graph Cursor

    Double clicking on the graph will set the cursor. The cursor is a blue line, and when it is set, it will also select the event in the list view that is the closest event at the timeline of where the cursor was selected.

    The above shows that list item 217448 (sys_exit) was the closest event to where the cursor was selected.

    Note that setting the cursor with double click will also set Marker A.

    Graph Plots

    The graph data is represented by plots. The data on the plots is either CPU specific or task specific. If it is CPU specific, then the data is the timeline of events that happened on a given CPU (which CPU is shown in the plot title area). If the plot is task specific, then the timeline of events is for the given task regardless of what CPU it was on at the time. The task name is also shown in the plot title area.

    By default, all the CPUs within the loaded trace.dat file are plotted. There are two ways to plot a task. One way is to right mouse click over a displayed task in the graph and select the plot option. This will add the task plot directly underneath the CPU plot that the task was on where the right mouse click took place. The other way is to use the Plots menu.

    Task Plots

    Selecting the "Tasks" menu item will bring up a dialog with all the tasks that were found in the trace data.

    Selecting a task in this dialog will add the task plot to the bottom of the graph area. Unselecting a task in this dialog will remove the plot.

    The colors in the task plots are different depending on which CPU the task was on at the time. The CPU plots change colors as different tasks run on the CPU, and the task plots change color depending on what CPU the task is running on. This makes it easy to see how much a task bounces around the CPUs. Zooming in on a task plot also shows some more characteristics of the task.

    The hollow green bar that is shown in front of some events in the task plot represents when the task was woken up from a sleeping state to when it actually ran. The hollow red bar between some events shows that the task was preempted by another task even though that task was still runnable.

    Since the hollow green bar shows the wake up latency of the task, the A,B markers can be used to measure that time.

    The above shows that the epiphany-browser with PID 28072 had a 479 microsecond wake up latency. The same can be done with the preemption latency.

    CPU Plots

    Selecting the "CPUs" plot menu item pops up a dialog that shows the available CPUs that can be plotted.

    Removing a selected CPU and hitting "Apply" will remove that CPU plot.

    The List View

    The list view is in the bottom half paned window and can be expanded or shortened with the paned handle.

    The top of the list view contains the list area which has the list page, list search, and "graph follows" toggle button. If more than a million events are stored in the list, then each set of million will be on a different page.

    The columns of the list are:

    • # - the index into the list.
    • CPU - the CPU that the event occurred on.
    • Time Stamp - The timestamp of the event. This is in seconds with microsecond resolution.
    • PID - The process ID of the task that was running when the event occurred.
    • Latency - The latency is broken into 5 fields:
      1. Interrupts disabled - 'd' if interrupts are disabled, otherwise '.'
      2. Need reschedule - 'N' if the kernel was notified that a schedule is needed, otherwise '.'
      3. In IRQ - 'h' if in a hard IRQ (hardware triggered), 's' if in a soft IRQ (context where the kernel initiated a the IRQ handler) or if soft IRQs are disabled, 'H' if in a hard IRQ and soft IRQs are disabled or the hard IRQ triggered while processing a soft IRQ, otherwise '.'
      4. Preemption counter - The index of the preemption counter. If it is other than zero, then the kernel will not preempt the running tasks, even if a schedule has been requested by some event. If the counter is zero, then '.' is shown.
      5. Lock depth - The depth of the big kernel lock being held. The big kernel lock is recursive (same task may acquire it multiple times). On the first acquisition, the depth is zero. This field will be zero or greater, or '.' if the big kernel lock is not held. When the big kernel lock is finally removed from the kernel, this field will go away as well.
    • Event - The name of the event.
    • Info - The data output of a particular event.

    The list search can find an event based on the contents in a row. Select a column, a match criteria and the content to match to find the next row that matches the search. The match criterion is one of the following:

    • contains - the row cell of the selected column contains the match data. This works with numbers as well.
    • full match - the row cell of the selected column matches exactly the match data.
    • does not have - the row cell of the selected column does not contain the match data.

    The search will find the next event that has the matching data within the column.

    Selecting an event

    A single click on a row will select the row, but a double click on a row will select that row as well as set the graph cursor to the location of that event. If the plot that the event is on is not visible then the graph will adjust its vertical view area to show the plot with the selected event. This has no effect on graph markers.

    Graph follows toggle

    When the "graph follows" toggle is set, then even a single click on a row will move the graph cursor. With the mouse focus on the list, using the keyboard up and down arrow keys will move the selection of the list as well as the graph cursor.

    Filters

    The amount of data that can be stored in a trace.dat file can be enormous. To make any sense out of some traces, it may be required to only display various events. The same can be true about tasks. Kernelshark has filters for tasks as well as for events.

    On start up of KernelShark, the task and event filters for the list and graph are kept synchronized. That is, any modification to the list filters will also update the graph filters, and vice versa. By selecting Filter->Unsync Graph and List Task Filters or Filter->Unsync Graph and List Event Filters will make the graph and list have their own task or event filters respectively.

    Task Filter

    The task filter can be set by either a right mouse click over an event on either the graph or the list view, and by selecting the option to add or remove the task to/from the task filter. A set of tasks may be added to the filters via the Filter menu in the menu bar.

    When tasks are selected from the menu bar the filter will be enabled automatically. When they are selected via the pop up menu, the filter needs to be enabled by the Enable menu also in the pop up menu.

    There are two types of task filters:

    • Task Filter - only show tasks that are in this filter
    • Hide Tasks - do not display the tasks within this filter

    If there are any tasks within the Task Filter then only those tasks will be displayed when the filter is enabled. Any task within the Hide Tasks filter will not be displayed, even if that same task is in the Task Filter.

    When either filter contains a task, the filter can be enabled.

    When a task is not in the "Task Filter", the pop up will show the menu item "Add task". When a task is in the "Task Filter" the pop up will show "Remove task".

    When a task is not in the "Hide Tasks", the pop up will show the menu item "Hide task". When a task is in the "Hide Tasks", the pop up will show "Show task".

    The scheduling events

    The events "sched_switch", "sched_wakeup", and "sched_wakeup_new" are treated differently by the task filter. Because these events deal with two tasks (previous and next, waker and wakee), if either of the tasks should be visible then that event is visible regardless if the other task should be hidden. This may seem confusing when an event that is hidden shows up in the Task column.

    Event Filter

    Like the task filter, the graph and list event filters start off synchronized. To make the list and graph have their own filter, just select the Filter->Unsync Graph and List Event Filters. The same can be done for task filters.

    Now the graph and list view will each have their own event filter. The event filters are enabled through the Filter menu on the top menu-bar.

    Notice that the menu changed after selecting Unsync Graph and List Event Filters. The events option was replaced by graph events and list events.

    Selecting either the "list events" or "graph events" will bring up the event dialog with the events that are visible selected.

    Note: these do not mean that the events exist in the trace.dat file. They are selected if the events are not to be hidden. Events that do not exist in the trace will not be displayed regardless of whether or not they are filtered.

    Clicking on "All" or any of the systems will either deselect all events underneath or select all events underneath depending on the previous state of the box being selected. By deselecting all events, it makes it easier to enable just a few individual events.

    To sync back the graph and list events, just select the Sync Graph and List Event Filters.

    If the selected events for the graph and list event filters are the same, then the two will become in-sync again. If not, a dialog will pop up asking how you want to sync the filters.

    • Sync List Filter with Graph Filter - will set the list event filter to be the same as what is in the graph filter.
    • Sync Graph Filter with List Filter - will set the graph event filter to be the same as what is in the list filter.

    By default the Keep the filters in sync is selected. If this is selected when OK is clicked, the graph and list filters will stay synchronized when one is changed. By unselecting the Keep option, the filters will by synchronized by the selected method, but a change to one of the filters will not affect the other.

    Advanced Event Filter

    Filtering on events may not be enough. The ability to filter on the content of individual events may be needed. In order to accomplish this, the advanced event filtering is used. Selecting the "list advanced event" or "graph advanced event" from the Filter menu will pop up the advanced event filtering dialog. The graph and list view each have their own advanced event filter.

    The "Filter:" entry at the bottom of the dialog is where the advanced filter is written. Above that is helper buttons to pick events, operations and event fields. The syntax of the filter is: 

       FILTER := EVENTS | EVENTS ':' EXPRESSION
   EVENTS := EVENTS ',' EVENTS | SYSTEM '/' EVENT | SYSTEM | EVENT
   SYSTEM := any system name
   EVENT  := any event name
   EXPRESSION := EXPRESSION BOOL EXPRESSION | '(' EXPRESSION ')' | OPERATION
   BOOL   := '&&' | '||'
   OPERATION := '!' EXPRESSION | LVALUE CMP RVALUE | LVALUE STRCMP STRVALUE
   CMP    := '>' | '<' | '==' | '>=' | '<=' | '!='
   STRCMP := '==' | '!=' | '=~' | '!~'
   RVALUE := integer | FIELD
   STRVALUE := string (double quoted value) | FIELD
   LVALUE := FIELD | EXPR
   EXPR   := FIELD OP RVALUE | '(' EXPR ')' | EXPR OP EXPR
   FIELD  := a field name of an event
   OP     := '+' | '-' | '*' | '/' | '<<' | '>>' | '&' | '!'

    Spaces are ignored. The example used in the dialog figure: 

      sched/sched_switch : next_prio < 100 && (prev_prio > 100 && prev_pid != 0)

    The sched/ is not necessary because without it, the filter will process all events named sched_switch, and since there is only one event that has that name, including the sched/ is redundant.

    The next_prio, prev_prio and prev_pid are all event fields of the sched_swich event.

    If just sched was used and the /sched_switch was omitted, it would still be a valid filter, but it would behave differently. By just specifying a system, the filter will run on all events within that system. When a field is encountered that does not belong to an event, then that compare will be set to false. 

       sched : prev_pid != 0
   sched : !(prev_pid == 0)

    The above two filters are not equivalent. They are for the sched_switch event, but not for the other events. The first filter will return false for all events that do not contain the prev_pid field, but the second filter would return true for all events that do not contain that field. Again, if the event does not contain a field, just that compare will be evaluated to false, not the entire expression. This means for events that do not have the prev_pid field, the above filters would be equivalent to: 

       sched : FALSE
   sched : !(FALSE)

    Letting filters contain fields that do not belong to an event be valid allows for various tricks where two events can share the same filter. 

       sched_switch, sched_wake.* : next_pid == 1 || pid == 1

    The schedule events that have next_pid and not pid as a field will just compare the first part of the || and those events with pid but without next_pid will be compared against the second part of the ||

    Notice that event names in the filter can be regular expressions.

    String fields can have regular expressions used in their comparing if =~ or !~ are used. 

       sched_switch : next_comm =~ "^events/[23]$"

    The available regular expressions are described in regex(7).

    Note: When adding an advanced filter, all non-advanced filters (added by the event filter dialog box) will be removed, and only the advanced filters will stay. But non-advanced filters may be added after advanced filters have been. The events that have advanced filters will be shaded in the event filter dialog:

    Just do not click on the advanced filter box and hit "Apply" unless you want to remove the advanced filter. Non-advanced filters can now be selected without affecting the advanced filters.

    When advanced filters already exist when the advanced filter dialog box pops up, they will be listed in the area at the top of the dialog. Although one filter may have been written, the list will be per event. A check box is to the left of the filter. When checked, the filter will be deleted if the "Apply" button is selected.

    trace-cmd-2.5.3/Documentation/Makefile000066400000000000000000000057751246701203100176430ustar00rootroot00000000000000 obj := $(obj)/Documentation src := $(src)/Documentation ifeq ($(VERBOSE),1) Q = print_asciidoc = print_xsltproc = print_install = hide_xsltproc_output = else Q = @ print_asciidoc = echo ' ASCIIDOC '`basename $@`; print_xsltproc = echo ' XSLTPROC '`basename $@`; print_install = echo ' INSTALL '`basename $1`' to $(DESTDIR_SQ)'$2; hide_xsltproc_output = 2> /dev/null endif define manpage.xsl if [ -z ${MANPAGE_DOCBOOK_XSL} ]; then \ echo "*********************************"; \ echo "** No docbook.xsl is installed **"; \ echo "** Can't make man pages **"; \ echo "*********************************"; \ exit 1; \ fi endef do_asciidoc_build = \ ($(print_asciidoc) \ asciidoc -d manpage -b docbook -o $@ $<) do_xsltproc_build = \ ($(print_xsltproc) \ xsltproc --nonet -o $@ ${MANPAGE_DOCBOOK_XSL} $< $(hide_xsltproc_output)) # # asciidoc requires a synopsis, but file format man pages (5) do # not require them. This removes it from the file in the final step. define remove_synopsis (sed -e '/^\.SH "SYNOPSIS"/,/ignore/d' $1 > $1.tmp;\ mv $1.tmp $1) endef # # Most likely a docbook.xsl is already installed on the users system # instead of creating a new wheel, lets reuse what's already there. # FIND_MANPAGE_DOCBOOK_XSL := $(shell find /usr -name docbook.xsl 2>/dev/null | grep manpages | head -1) MANPAGE_DOCBOOK_XSL ?= ${FIND_MANPAGE_DOCBOOK_XSL} $(obj)/%.xsl: $(src)/%.txt $(Q)mkdir -p $(obj) $(Q)$(do_asciidoc_build) $(obj)/%.1: $(obj)/%.1.xsl @$(call manpage.xsl) $(Q)$(do_xsltproc_build) $(obj)/%.5: $(obj)/%.5.xsl @$(call manpage.xsl) $(Q)$(do_xsltproc_build) $(Q)$(call remove_synopsis, $@) TEXT1 = $(wildcard *.1.txt) MAN1 = $(patsubst %.1.txt,$(obj)/%.1, ${TEXT1}) TEXT5 = $(wildcard *.5.txt) MAN5 = $(patsubst %.5.txt,$(obj)/%.5, ${TEXT5}) all: $(MAN1) $(MAN5) # Need to find out how to export a macro instead of # copying this from the main Makefile. define do_install_data $(print_install) \ if [ ! -d '$(DESTDIR_SQ)$2' ]; then \ $(INSTALL) -d -m 755 '$(DESTDIR_SQ)$2'; \ fi; \ $(INSTALL) -m 644 $1 '$(DESTDIR_SQ)$2' endef MAN1_INSTALL = $(MAN1:%.1=%.1.install) MAN5_INSTALL = $(MAN5:%.5=%.5.install) $(MAN1_INSTALL): %.1.install : %.1 force $(Q)$(call do_install_data,$<,$(man_dir_SQ)/man1) $(MAN5_INSTALL): %.5.install : %.5 force $(Q)$(call do_install_data,$<,$(man_dir_SQ)/man5) html_dir = $(src)/HTML image_dir = $(html_dir)/images HTML = $(wildcard $(html_dir)/*.html) IMGS = $(wildcard $(image_dir)/*.png) HTML_INSTALL = $(subst .html,.html.install,$(HTML)) IMGS_INSTALL = $(subst .png,.png.install,$(IMGS)) $(HTML_INSTALL): %.html.install : %.html force $(Q)$(call do_install_data,$<,'$(html_install_SQ)') $(IMGS_INSTALL): %.png.install : %.png force $(Q)$(call do_install_data,$<,'$(img_install_SQ)') GUI_INSTALL = $(HTML_INSTALL) $(IMGS_INSTALL) install: $(MAN1_INSTALL) $(MAN5_INSTALL) $(GUI_INSTALL) clean: (cd $(obj); \ $(RM) *.xml *.xsl *.1 *.5) .PHONE: force force: trace-cmd-2.5.3/Documentation/README.PythonPlugin000066400000000000000000000067431246701203100215160ustar00rootroot00000000000000 PYTHON PLUGIN DOCUMENTATION ============================= With the python plugin (make python-plugin) you can now write plugins in python. The API exported by the python plugin itself (written in C) allows you to access most information about a record from python. To write a python plugin, put a new .py file into a new ~/.trace-cmd/python/ directory. The most basic python plugin is this: --- %< --- def register(pevent): pass --- >% --- which obviously does nothing at all. To register a callback, use the pevent.register_event_handler function: --- %< --- import tracecmd def my_event_handler(trace_seq, event): pass def register(pevent): pevent.register_event_handler("subsys", "event_name", my_event_handler) --- >% --- There are four object types that you get, described below. tracecmd.PEvent ----------------- This is the class of the 'pevent' object above, you get one of those via your register callback. It has one method and one property: * register_event_handler() - example above, to register an event handler function * file_endian - either '<' or '>' indicating which endianness the file has, to be used with struct.unpack() tracecmd.TraceSeq ------------------- This is the class of the 'trace_seq' parameter to your callback function. It has only one method, puts(), to put data into the buffer. Formatting must be done in python. tracecmd.Event ---------------------- This is the class of the 'event' parameter to your callback function. Note that it doesn't just contain the format, but also the event data. As such, you can do much with this, and this is what you'll usually use. Each instance of this allows access to record items via the dict protocol, and you can get the items via its keys() methods. So for example, your callback could be --- %< --- def my_callback(trace_seq, event): for fieldname in event.keys(): field = event[fieldname] --- >% --- Each field returned from the dict protocol is an instance of the next (and last) class: tracecmd.Field ---------------------- This is an instance of a field, including its data. It affords numerous use cases and is what you'll be using most. * If this is an integer field, i.e. 1, 2, 4 or 8 bytes long, you can convert it to the number contained, according to the file's endianness, by simply casting it to a long: field = event['myint'] value = long(field) * You can access the field's data, as field.data, and if the data is really a "__data_loc" type that will be resolved automatically. (If you don't know what this means, don't worry about it and just use field.data) This is it. It's pretty simple. A fully-featured plugin could look like this: --- %< --- def my_event_handler(trace_seq, event): trace_seq.puts("myev: %u", long(event['myfield'])) def register(pevent): pevent.register_event_handler("subsys", "event_name", my_event_handler) --- >% --- Tips and tricks ----------------- Be familiar with the struct module and use it, always checking endianness and potentially using pevent.file_endian. If you need access to pevent in your callbacks, simply pass it in yourself: --- %< --- def my_event_handler(pevent, trace_seq, event): pass def register(pevent): pevent.register_event_handler("subsys", "event_name", lambda *args: my_event_handler(pevent, *args) ) --- >% --- trace-cmd-2.5.3/Documentation/kernelshark.1.txt000066400000000000000000000015341246701203100214010ustar00rootroot00000000000000KERNELSHARK(1) ============== NAME ---- kernelshark - graphical reader for trace-cmd(1) output SYNOPSIS -------- *kernelshark* ['OPTIONS'] DESCRIPTION ----------- KernelShark is a front end reader of trace-cmd(1) output. It reads a trace-cmd.dat(5) formatted file and produces a graph and list view of the data. OPTIONS ------- *-h*:: Display the help text. *-v*:: Display the kernelshark version and exit. *-i* 'input-file':: Read trace data from the file 'input-file'. By default input is read from 'trace.dat'. SEE ALSO -------- trace-cmd(1) AUTHOR ------ Written by Steven Rostedt, RESOURCES --------- git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/trace-cmd.git COPYING ------- Copyright \(C) 2010 Red Hat, Inc. Free use of this software is granted under the terms of the GNU Public License (GPL). trace-cmd-2.5.3/Documentation/trace-cmd-check-events.1.txt000066400000000000000000000024011246701203100232760ustar00rootroot00000000000000TRACE-CMD-CHECK_EVENTS(1) ========================= NAME ---- trace-cmd-check-events - parse the event formats on local system SYNOPSIS -------- *trace-cmd check-events* ['OPTIONS'] DESCRIPTION ----------- The trace-cmd(1) check-events parses format strings for all the events on the local system. It returns whether all the format strings can be parsed correctly. It will load plugins unless specified otherwise. This is useful to check for any trace event format strings which may contain some internal kernel function references which cannot be decoded outside of the kernel. This may mean that either the unparsed format strings of the trace events need to be changed or that a plugin needs to be created to parse them. OPTIONS ------- *-N* - Don't load plugins SEE ALSO -------- trace-cmd(1), trace-cmd-record(1), trace-cmd-report(1), trace-cmd-stop(1), trace-cmd-extract(1), trace-cmd-reset(1), trace-cmd-split(1), trace-cmd-list(1), trace-cmd-listen(1), trace-cmd-start(1) AUTHOR ------ Written by Vaibhav Nagarnaik, RESOURCES --------- git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/trace-cmd.git COPYING ------- Copyright \(C) 2011 Google, Inc. Free use of this software is granted under the terms of the GNU Public License (GPL). trace-cmd-2.5.3/Documentation/trace-cmd-extract.1.txt000066400000000000000000000046761246701203100224110ustar00rootroot00000000000000TRACE-CMD-EXTRACT(1) =================== NAME ---- trace-cmd-extract - extract out the data from the Ftrace Linux tracer. SYNOPSIS -------- *trace-cmd extract ['OPTIONS']* DESCRIPTION ----------- The trace-cmd(1) extract is usually used after 'trace-cmd-start(1)' and 'trace-cmd-stop(1)'. It can be used after the Ftrace tracer has been started manually through the Ftrace pseudo file system. The extract command creates a trace.dat file that can be used by 'trace-cmd-report(1)' to read from. It reads the kernel internal ring buffer to produce the trace.dat file. OPTIONS ------- *-p* 'plugin':: Although *extract* does not start any traces, some of the plugins require just reading the output in ASCII format. These are the latency tracers, since the latency tracers have a separate internal buffer. The plugin option is therefore only necessary for the 'wakeup', 'wakeup-rt', 'irqsoff', 'preemptoff' and 'preemptirqsoff' plugins. With out this option, the extract command will extract from the internal Ftrace buffers. *-O* 'option':: If a latency tracer is being extracted, and the *-p* option is used, then there are some Ftrace options that can change the format. This will update those options before extracting. To see the list of options see 'trace-cmd-list'. To enable an option, write its name, to disable the option append the characters 'no' to it. For example: 'noprint-parent' will disable the 'print-parent' option that prints the parent function in printing a function event. *-o* 'outputfile':: By default, the extract command will create a 'trace.dat' file. This option will change where the file is written to. *-s*:: Extract from the snapshot buffer (if the kernel supports it). *--date*:: This is the same as the trace-cmd-record(1) --date option, but it does cause the extract routine to disable all tracing. That is, the end of the extract will perform something similar to trace-cmd-reset(1). SEE ALSO -------- trace-cmd(1), trace-cmd-record(1), trace-cmd-report(1), trace-cmd-start(1), trace-cmd-stop(1), trace-cmd-reset(1), trace-cmd-split(1), trace-cmd-list(1), trace-cmd-listen(1) AUTHOR ------ Written by Steven Rostedt, RESOURCES --------- git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/trace-cmd.git COPYING ------- Copyright \(C) 2010 Red Hat, Inc. Free use of this software is granted under the terms of the GNU Public License (GPL). trace-cmd-2.5.3/Documentation/trace-cmd-hist.1.txt000066400000000000000000000027321246701203100216750ustar00rootroot00000000000000TRACE-CMD-HIST(1) ================== NAME ---- trace-cmd-hist - show histogram of events in trace.dat file SYNOPSIS -------- *trace-cmd hist* ['OPTIONS']['input-file'] DESCRIPTION ----------- The trace-cmd(1) hist displays a histogram form from the trace.dat file. Instead of showing the events as they were ordered, it creates a histogram that can be displayed per task or for all tasks where the most common events appear first. It uses the function tracer and call stacks that it finds to try to put together a call graph of the events. OPTIONS ------- *-i* 'input-file':: By default, trace-cmd hist will read the file 'trace.dat'. But the *-i* option open up the given 'input-file' instead. Note, the input file may also be specified as the last item on the command line. *-P*:: To compact all events and show the call graphs by ignoring tasks and different PIDs, add the *-P* to do so. Instead of showing the task name, it will group all chains together and show "". SEE ALSO -------- trace-cmd(1), trace-cmd-record(1), trace-cmd-report(1), trace-cmd-start(1), trace-cmd-stop(1), trace-cmd-extract(1), trace-cmd-reset(1), trace-cmd-split(1), trace-cmd-listen(1) AUTHOR ------ Written by Steven Rostedt, RESOURCES --------- git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/trace-cmd.git COPYING ------- Copyright \(C) 2010 Red Hat, Inc. Free use of this software is granted under the terms of the GNU Public License (GPL). trace-cmd-2.5.3/Documentation/trace-cmd-list.1.txt000066400000000000000000000042271246701203100217020ustar00rootroot00000000000000TRACE-CMD-LIST(1) ================== NAME ---- trace-cmd-list - list available plugins, events or options for Ftrace. SYNOPSIS -------- *trace-cmd list* ['OPTIONS'] DESCRIPTION ----------- The trace-cmd(1) list displays the available plugins, events or Ftrace options that are configured on the current machine. If no option is given, then it lists all plugins, events and Ftrace options to standard output. OPTIONS ------- *-e* ['regex']:: This option will list the available events that are enabled on the local system. It takes an optional argument that uses 'regcomp(3)' expressions to seach. trace-cmd list -e '^sys.*' *-F*:: Used with *-e* 'regex' to show those events formats. *-l*:: Used with *-e* 'regex' to show those events filters. *-R*:: Used with *-e* 'regex' to show those events triggers. *-t*:: This option will list the available tracers that are enabled on the local system. *-p*:: Same as *-t* and only for legacy purposes. *-o*:: This option will list the available Ftrace options that are configured on the local system. *-f* ['regex']:: This option will list the available filter functions. These are the list of functions on the system that you can trace, or filter on. It takes an optional argument that uses 'regcomp(3)' expressions to seach. trace-cmd list -f '^sched.*' *-P*:: List the plugin files that get loaded on trace-cmd report. *-O*:: List plugin options that can be used by trace-cmd report *-O* option. *-B*:: List defined buffer instances (sub buffers). *-C*:: List defined clocks that can be used with trace-cmd record -C. The one in brackets ([]) is the active clock. SEE ALSO -------- trace-cmd(1), trace-cmd-record(1), trace-cmd-report(1), trace-cmd-start(1), trace-cmd-stop(1), trace-cmd-extract(1), trace-cmd-reset(1), trace-cmd-split(1), trace-cmd-listen(1) AUTHOR ------ Written by Steven Rostedt, RESOURCES --------- git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/trace-cmd.git COPYING ------- Copyright \(C) 2010 Red Hat, Inc. Free use of this software is granted under the terms of the GNU Public License (GPL). trace-cmd-2.5.3/Documentation/trace-cmd-listen.1.txt000066400000000000000000000030431246701203100222200ustar00rootroot00000000000000TRACE-CMD-LISTEN(1) ================== NAME ---- trace-cmd-listen - listen for incoming connection to record tracing. SYNOPSIS -------- *trace-cmd listen* -p 'port' ['OPTIONS'] DESCRIPTION ----------- The trace-cmd(1) listen sets up a port to listen to waiting for connections from other hosts that run 'trace-cmd-record(1)' with the *-N* option. When a connection is made, and the remote host sends data, it will create a file called 'trace.HOST:PORT.dat'. Where HOST is the name of the remote host, and PORT is the port that the remote host used to connect with. OPTIONS ------- *-p* 'port':: This option will specify the port to listen to. *-D*:: This options causes trace-cmd listen to go into a daemon mode and run in the background. *-d* 'dir':: This option specifies a directory to write the data files into. *-o* 'filename':: This option overrides the default 'trace' in the 'trace.HOST:PORT.dat' that is created when a remote host connects. *-l* 'filename':: This option writes the output messages to a log file instead of standard output. SEE ALSO -------- trace-cmd(1), trace-cmd-record(1), trace-cmd-report(1), trace-cmd-start(1), trace-cmd-stop(1), trace-cmd-extract(1), trace-cmd-reset(1), trace-cmd-split(1), trace-cmd-list(1) AUTHOR ------ Written by Steven Rostedt, RESOURCES --------- git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/trace-cmd.git COPYING ------- Copyright \(C) 2010 Red Hat, Inc. Free use of this software is granted under the terms of the GNU Public License (GPL). trace-cmd-2.5.3/Documentation/trace-cmd-mem.1.txt000066400000000000000000000071271246701203100215070ustar00rootroot00000000000000TRACE-CMD-MEM(1) ================== NAME ---- trace-cmd-mem - show memory usage of certain kmem events SYNOPSIS -------- *trace-cmd mem* ['OPTIONS']['input-file'] DESCRIPTION ----------- The trace-cmd(1) mem requires a trace-cmd record that enabled the following events: kmalloc kmalloc_node kfree kmem_cache_alloc kmem_cache_alloc_node kmem_cache_alloc_free It then reads the amount requested and the ammount freed as well as the functions that called the allocation. It then reports the final amount of bytes requested and allocated, along with the total amount allocated and requested, as well as the max allocation and requested during the run. It reports the amount of wasted bytes (allocated - requested) that was not freed, as well as the max wasted amount during the run. The list is sorted by descending order of wasted bytes after the run. Function Waste Alloc req TotAlloc TotReq MaxAlloc MaxReq MaxWaste -------- ----- ----- --- -------- ------ -------- ------ -------- rb_allocate_cpu_buffer 768 2304 1536 2304 1536 2304 1536 768 alloc_pipe_info 400 1152 752 1152 752 1152 752 400 instance_mkdir 252 544 292 544 292 544 292 252 __d_alloc 215 1086560 1086345 1087208 1086993 1086560 1086345 215 get_empty_filp 72 2304 2232 4864 4712 4864 4712 152 mm_alloc 40 960 920 960 920 960 920 40 prepare_creds 32 192 160 1728 1440 1728 1440 288 tracing_buffers_open 8 32 24 32 24 32 24 8 do_brk 0 0 0 368 368 368 368 0 journal_add_journal_head 0 6048 6048 6048 6048 6048 6048 0 journal_start 0 0 0 1224 1224 48 48 0 __rb_allocate_pages 0 3289856 3289856 3289856 3289856 3289856 3289856 0 anon_vma_alloc 0 0 0 936 936 864 864 0 [...] OPTIONS ------- *-i* 'input-file':: By default, trace-cmd hist will read the file 'trace.dat'. But the *-i* option open up the given 'input-file' instead. Note, the input file may also be specified as the last item on the command line. SEE ALSO -------- trace-cmd(1), trace-cmd-record(1), trace-cmd-report(1), trace-cmd-start(1), trace-cmd-stop(1), trace-cmd-extract(1), trace-cmd-reset(1), trace-cmd-hist(1), trace-cmd-split(1), trace-cmd-listen(1) AUTHOR ------ Written by Steven Rostedt, RESOURCES --------- git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/trace-cmd.git COPYING ------- Copyright \(C) 2013 Red Hat, Inc. Free use of this software is granted under the terms of the GNU Public License (GPL). trace-cmd-2.5.3/Documentation/trace-cmd-options.1.txt000066400000000000000000000014311246701203100224140ustar00rootroot00000000000000TRACE-CMD-OPTIONS(1) =================== NAME ---- trace-cmd-options - list available options from trace-cmd plugins SYNOPSIS -------- *trace-cmd options* DESCRIPTION ----------- The trace-cmd(1) options command will examine all the trace-cmd plugins that are used by *trace-cmd report(1)* and list them. SEE ALSO -------- trace-cmd(1), trace-cmd-record(1), trace-cmd-start(1), trace-cmd-stop(1), trace-cmd-extract(1), trace-cmd-reset(1), trace-cmd-split(1), trace-cmd-list(1), trace-cmd-listen(1) AUTHOR ------ Written by Steven Rostedt, RESOURCES --------- git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/trace-cmd.git COPYING ------- Copyright \(C) 2011 Red Hat, Inc. Free use of this software is granted under the terms of the GNU Public License (GPL). trace-cmd-2.5.3/Documentation/trace-cmd-profile.1.txt000066400000000000000000000760631246701203100223760ustar00rootroot00000000000000TRACE-CMD-PROFILE(1) =================== NAME ---- trace-cmd-profile - profile tasks running live SYNOPSIS -------- *trace-cmd profile ['OPTIONS']* ['command'] DESCRIPTION ----------- The trace-cmd(1) profile will start tracing just like trace-cmd-record(1), with the *--profile* option, except that it does not write to a file, but instead, it will read the events as they happen and will update the accounting of the events. When the trace is finished, it will report the results just like trace-cmd-report(1) would do with its *--profile* option. In other words, the profile command does the work of trace-cmd record --profile, and trace-cmd report --profile without having to record the data to disk, in between. The advantage of using the profile command is that the profiling can be done over a long period of time where recording all events would take up too much disk space. This will enable several events as well as the function graph tracer with a depth of one (if the kernel supports it). This is to show where tasks enter and exit the kernel and how long they were in the kernel. To disable calling function graph, use the *-p* option to enable another tracer. To not enable any tracer, use *-p nop*. All timings are currently in nanoseconds. OPTIONS ------- These are the same as trace-cmd-record(1) with the *--profile* option. *-p* 'tracer':: Set a tracer plugin to run instead of function graph tracing set to depth of 1. To not run any tracer, use *-p nop*. *-S*:: Only enable the tracer or events speficied on the command line. With this option, the function_graph tracer is not enabled, nor are any events (like sched_switch), unless they are specifically specified on the command line (i.e. -p function -e sched_switch -e sched_wakeup) *-o* 'file':: Write the output of the profile to 'file'. This supersedes *--stderr* *-H* 'event-hooks':: Add custom event matching to connect any two events together. Format is: [:],[,]/ [:],[,] The start_system:start_event (start_system is optional), is the event that starts the timing. start_match is the field in the start event that is to match with the end_match in the end event. start_pid is optional, as matches are attached to the tasks that run the events, if another field should be used to find that task, then it is specified with start_pid. end_system:end_event is the event that ends the timing (end_system is optional). end_match is the field in end_match that wil match the start event field start_match. flags are optional and can be the following (case insensitive): p : The two events are pinned to the same CPU (start and end happen on the same CPU always). s : The event should have a stack traced with it (enable stack tracing for the start event). g : The event is global (not associated to a task). start_pid is not applicable with this flag. (Note: 'g' is not yet implemented) *--stderr*:: Redirect the output to stderr. The output of the command being executed is not changed. This allows watching the command execute and saving the output of the profile to another file. EXAMPLES -------- --- # trace-cmd profile -F sleep 1 [..] task: sleep-1121 Event: sched_switch:R (2) Total: 234559 Avg: 117279 Max: 129886 Min:104673 | + ftrace_raw_event_sched_switch (0xffffffff8109f310) 100% (2) time:234559 max:129886 min:104673 avg:117279 __schedule (0xffffffff816c1e81) preempt_schedule (0xffffffff816c236e) ___preempt_schedule (0xffffffff81351a59) | + unmap_single_vma (0xffffffff81198c05) | 55% (1) time:129886 max:129886 min:0 avg:129886 | stop_one_cpu (0xffffffff8110909a) | sched_exec (0xffffffff810a119b) | do_execveat_common.isra.31 (0xffffffff811de528) | do_execve (0xffffffff811dea8c) | SyS_execve (0xffffffff811ded1e) | return_to_handler (0xffffffff816c8458) | stub_execve (0xffffffff816c6929) | + unmap_single_vma (0xffffffff81198c05) 45% (1) time:104673 max:104673 min:0 avg:104673 unmap_vmas (0xffffffff81199174) exit_mmap (0xffffffff811a1f5b) mmput (0xffffffff8107699a) flush_old_exec (0xffffffff811ddb75) load_elf_binary (0xffffffff812287df) search_binary_handler (0xffffffff811dd3e0) do_execveat_common.isra.31 (0xffffffff811de8bd) do_execve (0xffffffff811dea8c) SyS_execve (0xffffffff811ded1e) return_to_handler (0xffffffff816c8458) stub_execve (0xffffffff816c6929) Event: sched_switch:S (1) Total: 1000513242 Avg: 1000513242 Max: 1000513242 Min:1000513242 | + ftrace_raw_event_sched_switch (0xffffffff8109f310) 100% (1) time:1000513242 max:1000513242 min:0 avg:1000513242 __schedule (0xffffffff816c1e81) schedule (0xffffffff816c23b9) do_nanosleep (0xffffffff816c4f1c) hrtimer_nanosleep (0xffffffff810dcd86) SyS_nanosleep (0xffffffff810dcea6) return_to_handler (0xffffffff816c8458) tracesys_phase2 (0xffffffff816c65b0) Event: sched_wakeup:1121 (1) Total: 43405 Avg: 43405 Max: 43405 Min:43405 | + ftrace_raw_event_sched_wakeup_template (0xffffffff8109d960) 100% (1) time:43405 max:43405 min:0 avg:43405 ttwu_do_wakeup (0xffffffff810a01a2) ttwu_do_activate.constprop.122 (0xffffffff810a0236) try_to_wake_up (0xffffffff810a3ec3) wake_up_process (0xffffffff810a4057) hrtimer_wakeup (0xffffffff810db772) __run_hrtimer (0xffffffff810dbd91) hrtimer_interrupt (0xffffffff810dc6b7) local_apic_timer_interrupt (0xffffffff810363e7) smp_trace_apic_timer_interrupt (0xffffffff816c8c6a) trace_apic_timer_interrupt (0xffffffff816c725a) finish_task_switch (0xffffffff8109c3a4) __schedule (0xffffffff816c1e01) schedule (0xffffffff816c23b9) ring_buffer_wait (0xffffffff811323a3) wait_on_pipe (0xffffffff81133d93) tracing_buffers_splice_read (0xffffffff811350b0) do_splice_to (0xffffffff8120476f) SyS_splice (0xffffffff81206c1f) tracesys_phase2 (0xffffffff816c65b0) Event: func: sys_nanosleep() (1) Total: 1000598016 Avg: 1000598016 Max: 1000598016 Min:1000598016 Event: func: sys_munmap() (1) Total: 14300 Avg: 14300 Max: 14300 Min:14300 Event: func: sys_arch_prctl() (1) Total: 571 Avg: 571 Max: 571 Min:571 Event: func: sys_mprotect() (4) Total: 14382 Avg: 3595 Max: 7196 Min:2190 Event: func: SyS_read() (1) Total: 2640 Avg: 2640 Max: 2640 Min:2640 Event: func: sys_close() (5) Total: 4001 Avg: 800 Max: 1252 Min:414 Event: func: sys_newfstat() (3) Total: 11684 Avg: 3894 Max: 10206 Min:636 Event: func: SyS_open() (3) Total: 23615 Avg: 7871 Max: 10535 Min:4743 Event: func: sys_access() (1) Total: 5924 Avg: 5924 Max: 5924 Min:5924 Event: func: SyS_mmap() (8) Total: 39153 Avg: 4894 Max: 12354 Min:1518 Event: func: smp_trace_apic_timer_interrupt() (1) Total: 10298 Avg: 10298 Max: 10298 Min:10298 Event: func: SyS_brk() (4) Total: 2407 Avg: 601 Max: 1564 Min:206 Event: func: do_notify_resume() (2) Total: 4095 Avg: 2047 Max: 2521 Min:1574 Event: func: sys_execve() (5) Total: 1625251 Avg: 325050 Max: 1605698 Min:3570 | + ftrace_raw_event_sched_wakeup_template (0xffffffff8109d960) 100% (1) time:1605698 max:1605698 min:0 avg:1605698 ttwu_do_wakeup (0xffffffff810a01a2) ttwu_do_activate.constprop.122 (0xffffffff810a0236) try_to_wake_up (0xffffffff810a3ec3) wake_up_process (0xffffffff810a4057) cpu_stop_queue_work (0xffffffff81108df8) stop_one_cpu (0xffffffff8110909a) sched_exec (0xffffffff810a119b) do_execveat_common.isra.31 (0xffffffff811de528) do_execve (0xffffffff811dea8c) SyS_execve (0xffffffff811ded1e) return_to_handler (0xffffffff816c8458) stub_execve (0xffffffff816c6929) stub_execve (0xffffffff816c6929) Event: func: syscall_trace_enter_phase2() (38) Total: 21544 Avg: 566 Max: 1066 Min:329 Event: func: syscall_trace_enter_phase1() (38) Total: 9202 Avg: 242 Max: 376 Min:150 Event: func: __do_page_fault() (53) Total: 257672 Avg: 4861 Max: 27745 Min:458 | + ftrace_raw_event_sched_wakeup_template (0xffffffff8109d960) 100% (1) time:27745 max:27745 min:0 avg:27745 ttwu_do_wakeup (0xffffffff810a01a2) ttwu_do_activate.constprop.122 (0xffffffff810a0236) try_to_wake_up (0xffffffff810a3ec3) default_wake_function (0xffffffff810a4002) autoremove_wake_function (0xffffffff810b50fd) __wake_up_common (0xffffffff810b4958) __wake_up (0xffffffff810b4cb8) rb_wake_up_waiters (0xffffffff8112f126) irq_work_run_list (0xffffffff81157d0f) irq_work_run (0xffffffff81157d5e) smp_trace_irq_work_interrupt (0xffffffff810082fc) trace_irq_work_interrupt (0xffffffff816c7aaa) return_to_handler (0xffffffff816c8458) trace_do_page_fault (0xffffffff810478b2) trace_page_fault (0xffffffff816c7dd2) Event: func: syscall_trace_leave() (38) Total: 26145 Avg: 688 Max: 1264 Min:381 Event: func: __sb_end_write() (1) Total: 373 Avg: 373 Max: 373 Min:373 Event: func: fsnotify() (1) Total: 598 Avg: 598 Max: 598 Min:598 Event: func: __fsnotify_parent() (1) Total: 286 Avg: 286 Max: 286 Min:286 Event: func: mutex_unlock() (2) Total: 39636 Avg: 19818 Max: 39413 Min:223 Event: func: smp_trace_irq_work_interrupt() (6) Total: 236459 Avg: 39409 Max: 100671 Min:634 | + ftrace_raw_event_sched_wakeup_template (0xffffffff8109d960) 100% (4) time:234348 max:100671 min:38745 avg:58587 ttwu_do_wakeup (0xffffffff810a01a2) ttwu_do_activate.constprop.122 (0xffffffff810a0236) try_to_wake_up (0xffffffff810a3ec3) default_wake_function (0xffffffff810a4002) autoremove_wake_function (0xffffffff810b50fd) __wake_up_common (0xffffffff810b4958) __wake_up (0xffffffff810b4cb8) rb_wake_up_waiters (0xffffffff8112f126) irq_work_run_list (0xffffffff81157d0f) irq_work_run (0xffffffff81157d5e) smp_trace_irq_work_interrupt (0xffffffff810082fc) return_to_handler (0xffffffff816c8458) trace_irq_work_interrupt (0xffffffff816c7aaa) | + ftrace_return_to_handler (0xffffffff81140840) | 84% (3) time:197396 max:100671 min:38745 avg:65798 | return_to_handler (0xffffffff816c846d) | trace_page_fault (0xffffffff816c7dd2) | + ftrace_return_to_handler (0xffffffff81140840) 16% (1) time:36952 max:36952 min:0 avg:36952 ftrace_graph_caller (0xffffffff816c8428) mutex_unlock (0xffffffff816c3f75) rb_simple_write (0xffffffff81133142) vfs_write (0xffffffff811d7727) SyS_write (0xffffffff811d7acf) tracesys_phase2 (0xffffffff816c65b0) Event: sys_enter:35 (1) Total: 1000599765 Avg: 1000599765 Max: 1000599765 Min:1000599765 Event: sys_enter:11 (1) Total: 55025 Avg: 55025 Max: 55025 Min:55025 Event: sys_enter:158 (1) Total: 1584 Avg: 1584 Max: 1584 Min:1584 Event: sys_enter:10 (4) Total: 18359 Avg: 4589 Max: 8764 Min:2933 Event: sys_enter:0 (1) Total: 4223 Avg: 4223 Max: 4223 Min:4223 Event: sys_enter:3 (5) Total: 9948 Avg: 1989 Max: 2606 Min:1203 Event: sys_enter:5 (3) Total: 15530 Avg: 5176 Max: 11840 Min:1405 Event: sys_enter:2 (3) Total: 28002 Avg: 9334 Max: 12035 Min:5656 Event: sys_enter:21 (1) Total: 7814 Avg: 7814 Max: 7814 Min:7814 Event: sys_enter:9 (8) Total: 49583 Avg: 6197 Max: 14137 Min:2362 Event: sys_enter:12 (4) Total: 108493 Avg: 27123 Max: 104079 Min:922 Event: sys_enter:59 (5) Total: 1631608 Avg: 326321 Max: 1607529 Min:4563 Event: page_fault_user:0x398d86b630 (1) Event: page_fault_user:0x398d844de0 (1) Event: page_fault_user:0x398d8d9020 (1) Event: page_fault_user:0x1d37008 (1) Event: page_fault_user:0x7f0b89e91074 (1) Event: page_fault_user:0x7f0b89d98ed0 (1) Event: page_fault_user:0x7f0b89ec8950 (1) Event: page_fault_user:0x7f0b89d83644 (1) Event: page_fault_user:0x7f0b89d622a8 (1) Event: page_fault_user:0x7f0b89d5a560 (1) Event: page_fault_user:0x7f0b89d34010 (1) Event: page_fault_user:0x1d36008 (1) Event: page_fault_user:0x398d900510 (1) Event: page_fault_user:0x398dbb3ae8 (1) Event: page_fault_user:0x398d87f490 (1) Event: page_fault_user:0x398d8eb660 (1) Event: page_fault_user:0x398d8bd730 (1) Event: page_fault_user:0x398d9625d9 (1) Event: page_fault_user:0x398d931810 (1) Event: page_fault_user:0x398dbb7114 (1) Event: page_fault_user:0x398d837610 (1) Event: page_fault_user:0x398d89e860 (1) Event: page_fault_user:0x398d8f23b0 (1) Event: page_fault_user:0x398dbb4510 (1) Event: page_fault_user:0x398dbad6f0 (1) Event: page_fault_user:0x398dbb1018 (1) Event: page_fault_user:0x398d977b37 (1) Event: page_fault_user:0x398d92eb60 (1) Event: page_fault_user:0x398d8abff0 (1) Event: page_fault_user:0x398dbb0d30 (1) Event: page_fault_user:0x398dbb6c24 (1) Event: page_fault_user:0x398d821c50 (1) Event: page_fault_user:0x398dbb6c20 (1) Event: page_fault_user:0x398d886350 (1) Event: page_fault_user:0x7f0b90125000 (1) Event: page_fault_user:0x7f0b90124740 (1) Event: page_fault_user:0x7f0b90126000 (1) Event: page_fault_user:0x398d816230 (1) Event: page_fault_user:0x398d8002b8 (1) Event: page_fault_user:0x398dbb0b40 (1) Event: page_fault_user:0x398dbb2880 (1) Event: page_fault_user:0x7f0b90141cc6 (1) Event: page_fault_user:0x7f0b9013b85c (1) Event: page_fault_user:0x7f0b90127000 (1) Event: page_fault_user:0x606e70 (1) Event: page_fault_user:0x7f0b90144010 (1) Event: page_fault_user:0x7fffcb31b038 (1) Event: page_fault_user:0x606da8 (1) Event: page_fault_user:0x400040 (1) Event: page_fault_user:0x398d222218 (1) Event: page_fault_user:0x398d015120 (1) Event: page_fault_user:0x398d220ce8 (1) Event: page_fault_user:0x398d220b80 (1) Event: page_fault_user:0x7fffcb2fcff8 (1) Event: page_fault_user:0x398d001590 (1) Event: page_fault_user:0x398d838490 (1) Event: softirq_raise:RCU (3) Total: 252931 Avg: 84310 Max: 243288 Min:4639 Event: softirq_raise:SCHED (2) Total: 241249 Avg: 120624 Max: 239076 Min:2173 | + ftrace_raw_event_sched_wakeup_template (0xffffffff8109d960) 100% (1) time:239076 max:239076 min:0 avg:239076 ttwu_do_wakeup (0xffffffff810a01a2) ttwu_do_activate.constprop.122 (0xffffffff810a0236) try_to_wake_up (0xffffffff810a3ec3) default_wake_function (0xffffffff810a4002) autoremove_wake_function (0xffffffff810b50fd) __wake_up_common (0xffffffff810b4958) __wake_up (0xffffffff810b4cb8) rb_wake_up_waiters (0xffffffff8112f126) irq_work_run_list (0xffffffff81157d0f) irq_work_run (0xffffffff81157d5e) smp_trace_irq_work_interrupt (0xffffffff810082fc) trace_irq_work_interrupt (0xffffffff816c7aaa) irq_exit (0xffffffff8107dd66) smp_trace_apic_timer_interrupt (0xffffffff816c8c7a) trace_apic_timer_interrupt (0xffffffff816c725a) prepare_ftrace_return (0xffffffff8103d4fd) ftrace_graph_caller (0xffffffff816c8428) mem_cgroup_begin_page_stat (0xffffffff811cfd25) page_remove_rmap (0xffffffff811a4fc5) stub_execve (0xffffffff816c6929) unmap_single_vma (0xffffffff81198b1c) unmap_vmas (0xffffffff81199174) exit_mmap (0xffffffff811a1f5b) mmput (0xffffffff8107699a) flush_old_exec (0xffffffff811ddb75) load_elf_binary (0xffffffff812287df) search_binary_handler (0xffffffff811dd3e0) do_execveat_common.isra.31 (0xffffffff811de8bd) do_execve (0xffffffff811dea8c) SyS_execve (0xffffffff811ded1e) return_to_handler (0xffffffff816c8458) Event: softirq_raise:HI (3) Total: 72472 Avg: 24157 Max: 64186 Min:3430 Event: softirq_entry:RCU (2) Total: 3191 Avg: 1595 Max: 1788 Min:1403 | + ftrace_raw_event_sched_wakeup_template (0xffffffff8109d960) 100% (1) time:1788 max:1788 min:0 avg:1788 ttwu_do_wakeup (0xffffffff810a01a2) ttwu_do_activate.constprop.122 (0xffffffff810a0236) try_to_wake_up (0xffffffff810a3ec3) default_wake_function (0xffffffff810a4002) autoremove_wake_function (0xffffffff810b50fd) __wake_up_common (0xffffffff810b4958) __wake_up (0xffffffff810b4cb8) rb_wake_up_waiters (0xffffffff8112f126) irq_work_run_list (0xffffffff81157d0f) irq_work_run (0xffffffff81157d5e) smp_trace_irq_work_interrupt (0xffffffff810082fc) trace_irq_work_interrupt (0xffffffff816c7aaa) irq_work_queue (0xffffffff81157e95) ring_buffer_unlock_commit (0xffffffff8113039f) __buffer_unlock_commit (0xffffffff811367d5) trace_buffer_unlock_commit (0xffffffff811376a2) ftrace_event_buffer_commit (0xffffffff81146d5f) ftrace_raw_event_sched_process_exec (0xffffffff8109c511) do_execveat_common.isra.31 (0xffffffff811de9a3) do_execve (0xffffffff811dea8c) SyS_execve (0xffffffff811ded1e) return_to_handler (0xffffffff816c8458) stub_execve (0xffffffff816c6929) Event: softirq_entry:SCHED (2) Total: 2289 Avg: 1144 Max: 1350 Min:939 Event: softirq_entry:HI (3) Total: 180146 Avg: 60048 Max: 178969 Min:499 | + ftrace_raw_event_sched_wakeup_template (0xffffffff8109d960) 100% (1) time:178969 max:178969 min:0 avg:178969 ttwu_do_wakeup (0xffffffff810a01a2) ttwu_do_activate.constprop.122 (0xffffffff810a0236) try_to_wake_up (0xffffffff810a3ec3) wake_up_process (0xffffffff810a4057) wake_up_worker (0xffffffff8108de74) insert_work (0xffffffff8108fca6) __queue_work (0xffffffff8108fe12) delayed_work_timer_fn (0xffffffff81090088) call_timer_fn (0xffffffff810d8f89) run_timer_softirq (0xffffffff810da8a1) __do_softirq (0xffffffff8107d8fa) irq_exit (0xffffffff8107dd66) smp_trace_apic_timer_interrupt (0xffffffff816c8c7a) trace_apic_timer_interrupt (0xffffffff816c725a) prepare_ftrace_return (0xffffffff8103d4fd) ftrace_graph_caller (0xffffffff816c8428) mem_cgroup_begin_page_stat (0xffffffff811cfd25) page_remove_rmap (0xffffffff811a4fc5) stub_execve (0xffffffff816c6929) unmap_single_vma (0xffffffff81198b1c) unmap_vmas (0xffffffff81199174) exit_mmap (0xffffffff811a1f5b) mmput (0xffffffff8107699a) flush_old_exec (0xffffffff811ddb75) load_elf_binary (0xffffffff812287df) search_binary_handler (0xffffffff811dd3e0) do_execveat_common.isra.31 (0xffffffff811de8bd) do_execve (0xffffffff811dea8c) SyS_execve (0xffffffff811ded1e) return_to_handler (0xffffffff816c8458) --- The above uses *-F* to follow the sleep task. It filters only on events that pertain to sleep. Note, in order to follow forks, you need to also include the *-c* flag. Other tasks will appear in the profile as well if events reference more than one task (like sched_switch and sched_wakeup do. The "prev_pid" and "next_pid" of sched_switch, and the "common_pid" and "pid" of sched_wakeup). Stack traces are attached to events that are related to them. Taking a look at the above output: Event: sched_switch:R (2) Total: 234559 Avg: 117279 Max: 129886 Min:104673 This shows that task was preempted (it's in the running 'R' state). It was preempted twice '(2)' for a total of 234,559 nanoseconds, with a average preempt time of 117,279 ns, and maximum of 128,886 ns and minimum of 104,673 ns. The tree shows where it was preempted: | + ftrace_raw_event_sched_switch (0xffffffff8109f310) 100% (2) time:234559 max:129886 min:104673 avg:117279 __schedule (0xffffffff816c1e81) preempt_schedule (0xffffffff816c236e) ___preempt_schedule (0xffffffff81351a59) | + unmap_single_vma (0xffffffff81198c05) | 55% (1) time:129886 max:129886 min:0 avg:129886 | stop_one_cpu (0xffffffff8110909a) | sched_exec (0xffffffff810a119b) | do_execveat_common.isra.31 (0xffffffff811de528) | do_execve (0xffffffff811dea8c) | SyS_execve (0xffffffff811ded1e) | return_to_handler (0xffffffff816c8458) | stub_execve (0xffffffff816c6929) | + unmap_single_vma (0xffffffff81198c05) 45% (1) time:104673 max:104673 min:0 avg:104673 unmap_vmas (0xffffffff81199174) exit_mmap (0xffffffff811a1f5b) mmput (0xffffffff8107699a) flush_old_exec (0xffffffff811ddb75) load_elf_binary (0xffffffff812287df) search_binary_handler (0xffffffff811dd3e0) do_execveat_common.isra.31 (0xffffffff811de8bd) do_execve (0xffffffff811dea8c) SyS_execve (0xffffffff811ded1e) return_to_handler (0xffffffff816c8458) stub_execve (0xffffffff816c6929) Event: sched_switch:S (1) Total: 1000513242 Avg: 1000513242 Max: 1000513242 Min:10005132 This shows that the task was scheduled out in the INTERRUPTIBLE state once for a total of 1,000,513,242 ns (~1s), which makes sense as the task was a "sleep 1". After the schedule events, the function events are shown. By default the profiler will use the function graph tracer if the depth setting is supported by the kernel. It will set the depth to one which will only trace the first function that enters the kernel. It will also record the amount of time it was in the kernel. Event: func: sys_nanosleep() (1) Total: 1000598016 Avg: 1000598016 Max: 1000598016 Min:1000598016 Event: func: sys_munmap() (1) Total: 14300 Avg: 14300 Max: 14300 Min:14300 Event: func: sys_arch_prctl() (1) Total: 571 Avg: 571 Max: 571 Min:571 Event: func: sys_mprotect() (4) Total: 14382 Avg: 3595 Max: 7196 Min:2190 Event: func: SyS_read() (1) Total: 2640 Avg: 2640 Max: 2640 Min:2640 Event: func: sys_close() (5) Total: 4001 Avg: 800 Max: 1252 Min:414 Event: func: sys_newfstat() (3) Total: 11684 Avg: 3894 Max: 10206 Min:636 Event: func: SyS_open() (3) Total: 23615 Avg: 7871 Max: 10535 Min:4743 Event: func: sys_access() (1) Total: 5924 Avg: 5924 Max: 5924 Min:5924 Event: func: SyS_mmap() (8) Total: 39153 Avg: 4894 Max: 12354 Min:1518 Event: func: smp_trace_apic_timer_interrupt() (1) Total: 10298 Avg: 10298 Max: 10298 Min:10298 Event: func: SyS_brk() (4) Total: 2407 Avg: 601 Max: 1564 Min:206 Event: func: do_notify_resume() (2) Total: 4095 Avg: 2047 Max: 2521 Min:1574 Event: func: sys_execve() (5) Total: 1625251 Avg: 325050 Max: 1605698 Min:3570 Count of times the event was hit is always in parenthesis '(5)'. The function graph trace may produce too much overhead as it is still triggering (just not tracing) on all functions. To limit functions just to system calls (not interrupts), add the following option: -l 'sys_*' -l 'SyS_*' To disable function graph tracing totally, use: -p nop To use function tracing instead (note, this will not record timings, but just the count of times a function is hit): -p function Following the functions are the events that are recorded. Event: sys_enter:35 (1) Total: 1000599765 Avg: 1000599765 Max: 1000599765 Min:1000599765 Event: sys_enter:11 (1) Total: 55025 Avg: 55025 Max: 55025 Min:55025 Event: sys_enter:158 (1) Total: 1584 Avg: 1584 Max: 1584 Min:1584 Event: sys_enter:10 (4) Total: 18359 Avg: 4589 Max: 8764 Min:2933 Event: sys_enter:0 (1) Total: 4223 Avg: 4223 Max: 4223 Min:4223 Event: sys_enter:3 (5) Total: 9948 Avg: 1989 Max: 2606 Min:1203 Event: sys_enter:5 (3) Total: 15530 Avg: 5176 Max: 11840 Min:1405 Event: sys_enter:2 (3) Total: 28002 Avg: 9334 Max: 12035 Min:5656 Event: sys_enter:21 (1) Total: 7814 Avg: 7814 Max: 7814 Min:7814 Event: sys_enter:9 (8) Total: 49583 Avg: 6197 Max: 14137 Min:2362 Event: sys_enter:12 (4) Total: 108493 Avg: 27123 Max: 104079 Min:922 Event: sys_enter:59 (5) Total: 1631608 Avg: 326321 Max: 1607529 Min:4563 These are the raw system call events, with the raw system call ID after the "sys_enter:" For example, "59" is execve(2). Why did it execute 5 times? Looking at a strace of this run, we can see: execve("/usr/lib64/ccache/sleep", ["sleep", "1"], [/* 27 vars */] <... execve resumed> ) = -1 ENOENT (No such file or directory) execve("/usr/local/sbin/sleep", ["sleep", "1"], [/* 27 vars */] <... execve resumed> ) = -1 ENOENT (No such file or directory) execve("/usr/local/bin/sleep", ["sleep", "1"], [/* 27 vars */] <... execve resumed> ) = -1 ENOENT (No such file or directory) execve("/usr/sbin/sleep", ["sleep", "1"], [/* 27 vars */] <... execve resumed> ) = -1 ENOENT (No such file or directory) execve("/usr/bin/sleep", ["sleep", "1"], [/* 27 vars */] <... execve resumed> ) = 0 It attempted to execve the "sleep" command for each path in $PATH until it found one. The page_fault_user events show what userspace address took a page fault. Event: softirq_raise:RCU (3) Total: 252931 Avg: 84310 Max: 243288 Min:4639 Event: softirq_raise:SCHED (2) Total: 241249 Avg: 120624 Max: 239076 Min:2173 | + ftrace_raw_event_sched_wakeup_template (0xffffffff8109d960) 100% (1) time:239076 max:239076 min:0 avg:239076 ttwu_do_wakeup (0xffffffff810a01a2) ttwu_do_activate.constprop.122 (0xffffffff810a0236) try_to_wake_up (0xffffffff810a3ec3) default_wake_function (0xffffffff810a4002) autoremove_wake_function (0xffffffff810b50fd) __wake_up_common (0xffffffff810b4958) __wake_up (0xffffffff810b4cb8) rb_wake_up_waiters (0xffffffff8112f126) irq_work_run_list (0xffffffff81157d0f) irq_work_run (0xffffffff81157d5e) smp_trace_irq_work_interrupt (0xffffffff810082fc) trace_irq_work_interrupt (0xffffffff816c7aaa) irq_exit (0xffffffff8107dd66) The timings for the softirq_raise events measure the time it took from the raised softirq to the time it executed. The timings for the softirq_entry events measure the time the softirq took to execute. The stack traces for the softirqs (and possibly other events) are used when an event has a stack attached to it. This can happen if the profile ran more stacks than just the sched events, or when events are dropped and stacks To have full control of what gets traced, use the *-S* option that will have trace-cmd not enable any events or the function_graph tracer. Only the events listed on the command line are shown. If only the time of kmalloc is needed to be seen, and where it was recorded, using the *-S* option and enabling function_graph and stack tracing for just the function needed will give the profile of only that function. --- # trace-cmd profile -S -p function_graph -l '*kmalloc*' -l '*kmalloc*:stacktrace' sleep 1 task: sshd-11786 Event: func: __kmalloc_reserve.isra.59() (2) Total: 149684 Avg: 74842 Max: 75598 Min:74086 | + __alloc_skb (0xffffffff815a8917) | 67% (2) time:149684 max:75598 min:74086 avg:74842 | __kmalloc_node_track_caller (0xffffffff811c6635) | __kmalloc_reserve.isra.59 (0xffffffff815a84ac) | return_to_handler (0xffffffff816c8458) | sk_stream_alloc_skb (0xffffffff81604ea1) | tcp_sendmsg (0xffffffff8160592c) | inet_sendmsg (0xffffffff8162fed1) | sock_aio_write (0xffffffff8159f9fc) | do_sync_write (0xffffffff811d694a) | vfs_write (0xffffffff811d7825) | SyS_write (0xffffffff811d7adf) | system_call_fastpath (0xffffffff816c63d2) | + __alloc_skb (0xffffffff815a8917) 33% (1) time:74086 max:74086 min:74086 avg:74086 __alloc_skb (0xffffffff815a8917) sk_stream_alloc_skb (0xffffffff81604ea1) tcp_sendmsg (0xffffffff8160592c) inet_sendmsg (0xffffffff8162fed1) sock_aio_write (0xffffffff8159f9fc) do_sync_write (0xffffffff811d694a) vfs_write (0xffffffff811d7825) SyS_write (0xffffffff811d7adf) system_call_fastpath (0xffffffff816c63d2) [..] --- To watch the command run but save the output of the profile to a file use --stderr, and redirect stderr to a file # trace-cmd profile --stderr cyclictest -p 80 -n -t1 2> profile.out Or simple use *-o* # trace-cmd profile -o profile.out cyclictest -p 80 -n -t1 SEE ALSO -------- trace-cmd(1), trace-cmd-record(1), trace-cmd-report(1), trace-cmd-start(1), trace-cmd-stop(1), trace-cmd-reset(1), trace-cmd-split(1), trace-cmd-list(1), trace-cmd-listen(1) AUTHOR ------ Written by Steven Rostedt, RESOURCES --------- git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/trace-cmd.git COPYING ------- Copyright \(C) 2014 Red Hat, Inc. Free use of this software is granted under the terms of the GNU Public License (GPL). trace-cmd-2.5.3/Documentation/trace-cmd-record.1.txt000066400000000000000000000444461246701203100222140ustar00rootroot00000000000000TRACE-CMD-RECORD(1) =================== NAME ---- trace-cmd-record - record a trace from the Ftrace Linux internal tracer SYNOPSIS -------- *trace-cmd record* ['OPTIONS'] ['command'] DESCRIPTION ----------- The trace-cmd(1) record command will set up the Ftrace Linux kernel tracer to record the specified plugins or events that happen while the 'command' executes. If no command is given, then it will record until the user hits Ctrl-C. The record command of trace-cmd will set up the Ftrace tracer to start tracing the various events or plugins that are given on the command line. It will then create a number of tracing processes (one per CPU) that will start recording from the kernel ring buffer straight into temporary files. When the command is complete (or Ctrl-C is hit) all the files will be combined into a trace.dat file that can later be read (see trace-cmd-report(1)). OPTIONS ------- *-p* 'plugin':: Specify a trace plugin. Plugins are special Ftrace tracers that usually do more than just trace an event. Common plugins are *function*, *function_graph*, *preemptirqsoff*, *irqsoff*, *preemptoff*, and *wakeup*. A plugin must be supported by the running kernel. To see a list of available plugins, see trace-cmd-list(1). *-e* 'event':: Specify an event to trace. Various static trace points have been added to the Linux kernel. They are grouped by subsystem where you can enable all events of a given subsystem or specify specific events to be enabled. The 'event' is of the format "subsystem:event-name". You can also just specify the subsystem without the ':event-name' or the event-name without the "subsystem:". Using "-e sched_switch" will enable the "sched_switch" event where as, "-e sched" will enable all events under the "sched" subsystem. The 'event' can also contain glob expressions. That is, "*stat*" will select all events (or subsystems) that have the characters "stat" in their names. The keyword 'all' can be used to enable all events. *-a*:: Every event that is being recorded has its output format file saved in the output file to be able to display it later. But if other events are enabled in the trace without trace-cmd's knowledge, the formats of those events will not be recorded and trace-cmd report will not be able to display them. If this is the case, then specify the *-a* option and the format for all events in the system will be saved. *-T*:: Enable a stacktrace on each event. For example: -0 [003] 58549.289091: sched_switch: kworker/0:1:0 [120] R ==> trace-cmd:2603 [120] -0 [003] 58549.289092: kernel_stack: => schedule (ffffffff814b260e) => cpu_idle (ffffffff8100a38c) => start_secondary (ffffffff814ab828) *--func-stack*:: Enable a stack trace on all functions. Note this is only applicable for the "function" plugin tracer, and will only take effect if the -l option is used and succeeds in limiting functions. If the function tracer is not filtered, and the stack trace is enabled, you can live lock the machine. *-f* 'filter':: Specify a filter for the previous event. This must come after a *-e*. This will filter what events get recorded based on the content of the event. Filtering is passed to the kernel directly so what filtering is allowed may depend on what version of the kernel you have. Basically, it will let you use C notation to check if an event should be processed or not. ---------------------------------------- ==, >=, <=, >, <, &, |, && and || ---------------------------------------- The above are usually safe to use to compare fields. *-R* 'trigger':: Specify a trigger for the previous event. This must come after a *-e*. This will add a given trigger to the given event. To only enable the trigger and not the event itself, then place the event after the *-v* option. See Documentation/trace/events.txt in the Linux kernel source for more information on triggers. *-v*:: This will cause all events specified after it on the command line to not be traced. This is useful for selecting a subsystem to be traced but to leave out various events. For Example: "-e sched -v -e "\*stat\*"" will enable all events in the sched subsystem except those that have "stat" in their names. Note: the *-v* option was taken from the way grep(1) inverts the following matches. *-F*:: This will filter only the executable that is given on the command line. If no command is given, then it will filter itself (pretty pointless). Using *-F* will let you trace only events that are caused by the given command. *-P* 'pid':: Similar to *-F* but lets you specify a process ID to trace. *-c*:: Used with either *-F* to trace the process' children too. *-C* 'clock':: Set the trace clock to "clock". Use trace-cmd(1) list -C to see what clocks are available. *-o* 'output-file':: By default, trace-cmd report will create a 'trace.dat' file. You can specify a different file to write to with the *-o* option. *-l* 'function-name':: This will limit the 'function' and 'function_graph' tracers to only trace the given function name. More than one *-l* may be specified on the command line to trace more than one function. The limited use of glob expressions are also allowed. These are 'match\*' to only filter functions that start with 'match'. '\*match' to only filter functions that end with 'match'. '\*match\*' to only filter on functions that contain 'match'. *-g* 'function-name':: This option is for the function_graph plugin. It will graph the given function. That is, it will only trace the function and all functions that it calls. You can have more than one *-g* on the command line. *-n* 'function-name':: This has the opposite effect of *-l*. The function given with the *-n* option will not be traced. This takes precedence, that is, if you include the same function for both *-n* and *-l*, it will not be traced. *-d*:: Some tracer plugins enable the function tracer by default. Like the latency tracers. This option prevents the function tracer from being enabled at start up. *-D*:: The option *-d* will try to use the function-trace option to disable the function tracer (if available), otherwise it defaults to the proc file: /proc/sys/kernel/ftrace_enabled, but will not touch it if the function-trace option is available. The *-D* option will disable both the ftrace_enabled proc file as well as the function-trace option if it exists. Note, this disable function tracing for all users, which includes users outside of ftrace tracers (stack_tracer, perf, etc). *-O* 'option':: Ftrace has various options that can be enabled or disabled. This allows you to set them. Appending the text 'no' to an option disables it. For example: "-O nograph-time" will disable the "graph-time" Ftrace option. *-s* 'interval':: The processes that trace-cmd creates to record from the ring buffer need to wake up to do the recording. Setting the 'interval' to zero will cause the processes to wakeup every time new data is written into the buffer. But since Ftrace is recording kernel activity, the act of this processes going back to sleep may cause new events into the ring buffer which will wake the process back up. This will needlessly add extra data into the ring buffer. The 'interval' metric is microseconds. The default is set to 1000 (1 ms). This is the time each recording process will sleep before waking up to record any new data that was written to the ring buffer. *-r* 'priority':: The priority to run the capture threads at. In a busy system the trace capturing threads may be staved and events can be lost. This increases the priority of those threads to the real time (FIFO) priority. But use this option with care, it can also change the behaviour of the system being traced. *-b* 'size':: This sets the ring buffer size to 'size' kilobytes. Because the Ftrace ring buffer is per CPU, this size is the size of each per CPU ring buffer inside the kernel. Using "-b 10000" on a machine with 4 CPUs will make Ftrace have a total buffer size of 40 Megs. *-B* 'buffer-name':: If the kernel supports multiple buffers, this will add a buffer with the given name. If the buffer name already exists, that buffer is just reset and will not be deleted at the end of record execution. If the buffer is created, it will be removed at the end of execution (unless the *-k* is set, or 'start' command was used). After a buffer name is stated, all events added after that will be associated with that buffer. If no buffer is specified, or an event is specified before a buffer name, it will be associated with the main (toplevel) buffer. trace-cmd record -e sched -B block -e block -B time -e timer sleep 1 The above is will enable all sched events in the main buffer. It will then create a 'block' buffer instance and enable all block events within that buffer. A 'time' buffer instance is created and all timer events will be enabled for that event. *-m* 'size':: The max size in kilobytes that a per cpu buffer should be. Note, due to rounding to page size, the number may not be totally correct. Also, this is performed by switching between two buffers that are half the given size thus the output may not be of the given size even if much more was written. Use this to prevent running out of diskspace for long runs. *-M* 'cpumask':: Set the cpumask for to trace. It only affects the last buffer instance given. If supplied before any buffer instance, then it affects the main buffer. The value supplied must be a hex number. trace-cmd record -p function -M c -B events13 -e all -M 5 If the -M is left out, then the mask stays the same. To enable all CPUs, pass in a value of '-1'. *-k*:: By default, when trace-cmd is finished tracing, it will reset the buffers and disable all the tracing that it enabled. This option keeps trace-cmd from disabling the tracer and reseting the buffer. This option is useful for debugging trace-cmd. Note: usually trace-cmd will set the "tracing_on" file back to what it was before it was called. This option will leave that file set to zero. *-i*:: By default, if an event is listed that trace-cmd does not find, it will exit with an error. This option will just ignore events that are listed on the command line but are not found on the system. *-N* 'host:port':: If another machine is running "trace-cmd listen", this option is used to have the data sent to that machine with UDP packets. Instead of writing to an output file, the data is sent off to a remote box. This is ideal for embedded machines with little storage, or having a single machine that will keep all the data in a single repository. Note: This option is not supported with latency tracer plugins: wakeup, wakeup_rt, irqsoff, preemptoff and preemptirqsoff *-t*:: This option is used with *-N*, when there's a need to send the live data with TCP packets instead of UDP. Although TCP is not nearly as fast as sending the UDP packets, but it may be needed if the network is not that reliable, the amount of data is not that intensive, and a guarantee is needed that all traced information is transfered successfully. *--date*:: With the *--date* option, "trace-cmd" will write timestamps into the trace buffer after it has finished recording. It will then map the timestamp to gettimeofday which will allow wall time output from the timestamps reading the created 'trace.dat' file. *--profile*:: With the *--profile* option, "trace-cmd" will enable tracing that can be used with trace-cmd-report(1) --profile option. If a tracer *-p* is not set, and function graph depth is supported by the kernel, then the function_graph tracer will be enabled with a depth of one (only show where userspace enters into the kernel). It will also enable various tracepoints with stack tracing such that the report can show where tasks have been blocked for the longest time. See trace-cmd-profile(1) for more details and examples. *-H* 'event-hooks':: Add custom event matching to connect any two events together. When not used with *--profile*, it will save the parameter and this will be used by trace-cmd report --profile, too. That is: trace-cmd record -H hrtimer_expire_entry,hrtimer/hrtimer_expire_exit,hrtimer,sp trace-cmd report --profile Will profile hrtimer_expire_entry and hrtimer_expire_ext times. See trace-cmd-profile(1) for format. *--stderr*:: Have output go to stderr instead of stdout, but the output of the command executed will not be changed. This is useful if you want to monitor the output of the command being executed, but not see the output from trace-cmd. EXAMPLES -------- The basic way to trace all events: ------------------------------ # trace-cmd record -e all ls > /dev/null # trace-cmd report trace-cmd-13541 [003] 106260.693809: filemap_fault: address=0x128122 offset=0xce trace-cmd-13543 [001] 106260.693809: kmalloc: call_site=81128dd4 ptr=0xffff88003dd83800 bytes_req=768 bytes_alloc=1024 gfp_flags=GFP_KERNEL|GFP_ZERO ls-13545 [002] 106260.693809: kfree: call_site=810a7abb ptr=0x0 ls-13545 [002] 106260.693818: sys_exit_write: 0x1 ------------------------------ To use the function tracer with sched switch tracing: ------------------------------ # trace-cmd record -p function -e sched_switch ls > /dev/null # trace-cmd report ls-13587 [002] 106467.860310: function: hrtick_start_fair <-- pick_next_task_fair ls-13587 [002] 106467.860313: sched_switch: prev_comm=trace-cmd prev_pid=13587 prev_prio=120 prev_state=R ==> next_comm=trace-cmd next_pid=13583 next_prio=120 trace-cmd-13585 [001] 106467.860314: function: native_set_pte_at <-- __do_fault trace-cmd-13586 [003] 106467.860314: function: up_read <-- do_page_fault ls-13587 [002] 106467.860317: function: __phys_addr <-- schedule trace-cmd-13585 [001] 106467.860318: function: _raw_spin_unlock <-- __do_fault ls-13587 [002] 106467.860320: function: native_load_sp0 <-- __switch_to trace-cmd-13586 [003] 106467.860322: function: down_read_trylock <-- do_page_fault ------------------------------ Here is a nice way to find what interrupts have the highest latency: ------------------------------------------ # trace-cmd record -p function_graph -e irq_handler_entry -l do_IRQ sleep 10 # trace-cmd report -0 [000] 157412.933969: funcgraph_entry: | do_IRQ() { -0 [000] 157412.933974: irq_handler_entry: irq=48 name=eth0 -0 [000] 157412.934004: funcgraph_exit: + 36.358 us | } -0 [000] 157413.895004: funcgraph_entry: | do_IRQ() { -0 [000] 157413.895011: irq_handler_entry: irq=48 name=eth0 -0 [000] 157413.895026: funcgraph_exit: + 24.014 us | } -0 [000] 157415.891762: funcgraph_entry: | do_IRQ() { -0 [000] 157415.891769: irq_handler_entry: irq=48 name=eth0 -0 [000] 157415.891784: funcgraph_exit: + 22.928 us | } -0 [000] 157415.934869: funcgraph_entry: | do_IRQ() { -0 [000] 157415.934874: irq_handler_entry: irq=48 name=eth0 -0 [000] 157415.934906: funcgraph_exit: + 37.512 us | } -0 [000] 157417.888373: funcgraph_entry: | do_IRQ() { -0 [000] 157417.888381: irq_handler_entry: irq=48 name=eth0 -0 [000] 157417.888398: funcgraph_exit: + 25.943 us | } ------------------------------------------ An example of the profile: ------------------------------------------ # trace-cmd record --profile sleep 1 # trace-cmd report --profile --comm sleep task: sleep-21611 Event: sched_switch:R (1) Total: 99442 Avg: 99442 Max: 99442 Min:99442 1 total:99442 min:99442 max:99442 avg=99442 => ftrace_raw_event_sched_switch (0xffffffff8105f812) => __schedule (0xffffffff8150810a) => preempt_schedule (0xffffffff8150842e) => ___preempt_schedule (0xffffffff81273354) => cpu_stop_queue_work (0xffffffff810b03c5) => stop_one_cpu (0xffffffff810b063b) => sched_exec (0xffffffff8106136d) => do_execve_common.isra.27 (0xffffffff81148c89) => do_execve (0xffffffff811490b0) => SyS_execve (0xffffffff811492c4) => return_to_handler (0xffffffff8150e3c8) => stub_execve (0xffffffff8150c699) Event: sched_switch:S (1) Total: 1000506680 Avg: 1000506680 Max: 1000506680 Min:1000506680 1 total:1000506680 min:1000506680 max:1000506680 avg=1000506680 => ftrace_raw_event_sched_switch (0xffffffff8105f812) => __schedule (0xffffffff8150810a) => schedule (0xffffffff815084b8) => do_nanosleep (0xffffffff8150b22c) => hrtimer_nanosleep (0xffffffff8108d647) => SyS_nanosleep (0xffffffff8108d72c) => return_to_handler (0xffffffff8150e3c8) => tracesys_phase2 (0xffffffff8150c304) Event: sched_wakeup:21611 (1) Total: 30326 Avg: 30326 Max: 30326 Min:30326 1 total:30326 min:30326 max:30326 avg=30326 => ftrace_raw_event_sched_wakeup_template (0xffffffff8105f653) => ttwu_do_wakeup (0xffffffff810606eb) => ttwu_do_activate.constprop.124 (0xffffffff810607c8) => try_to_wake_up (0xffffffff8106340a) ------------------------------------------ SEE ALSO -------- trace-cmd(1), trace-cmd-report(1), trace-cmd-start(1), trace-cmd-stop(1), trace-cmd-extract(1), trace-cmd-reset(1), trace-cmd-split(1), trace-cmd-list(1), trace-cmd-listen(1), trace-cmd-profile(1) AUTHOR ------ Written by Steven Rostedt, RESOURCES --------- git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/trace-cmd.git COPYING ------- Copyright \(C) 2010 Red Hat, Inc. Free use of this software is granted under the terms of the GNU Public License (GPL). trace-cmd-2.5.3/Documentation/trace-cmd-report.1.txt000066400000000000000000000471321246701203100222440ustar00rootroot00000000000000TRACE-CMD-REPORT(1) =================== NAME ---- trace-cmd-report - show in ASCII a trace created by trace-cmd record SYNOPSIS -------- *trace-cmd report* ['OPTIONS'] ['input-file'] DESCRIPTION ----------- The trace-cmd(1) report command will output a human readable report of a trace created by trace-cmd record. OPTIONS ------- *-i* 'input-file':: By default, trace-cmd report will read the file 'trace.dat'. But the *-i* option open up the given 'input-file' instead. Note, the input file may also be specified as the last item on the command line. *-e*:: This outputs the endianess of the file. trace-cmd report is smart enough to be able to read big endian files on little endian machines, and vise versa. *-f*:: This outputs the list of functions that have been recorded in the file. *-P*:: This outputs the list of "trace_printk()" data. The raw trace data points to static pointers in the kernel. This must be stored in the trace.dat file. *-E*:: This lists the possible events in the file (but this list is not necessarily the list of events in the file). *--events*:: This will list the event formats that are stored in the trace.dat file. *--event* regex:: This will print events that match the given regex. If a colon is specified, then the characters before the colon will be used to match the system and the characters after the colon will match the event. trace-cmd report --event sys:read The above will only match events where the system name contains "sys" and the event name contains "read". trace-cmd report --event read The above will match all events that contain "read" in its name. Also it may list all events of a system that contains "read" as well. *--check-events*:: This will parse the event format strings that are stored in the trace.dat file and return whether the formats can be parsed correctly. It will load plugins unless *-N* is specified. *-t*:: Print the full timestamp. The timestamps in the data file are usually recorded to the nanosecond. But the default display of the timestamp is only to the microsecond. To see the full timestamp, add the *-t* option. *-F* 'filter':: Add a filter to limit what events are displayed. The format of the filter is: ------------------------------------------ ':' = SYSTEM'/'EVENT | SYSTEM | EVENT | ',' = EVENT_FIELD | '&&' | '||' | '(' ')' | '!' = '==' | '!=' | '>=' | '<=' | '>' | '<' | '&' | '|' | '^' | '+' | '-' | '*' | '/' | '%' = NUM | STRING | EVENT_FIELD ------------------------------------------ SYSTEM is the name of the system to filter on. If the EVENT is left out, then it applies to all events under the SYSTEM. If only one string is used without the '/' to deliminate between SYSTEM and EVENT, then the filter will be applied to all systems and events that match the given string. Whitespace is ignored, such that "sched:next_pid==123" is equivalent to "sched : next_pid == 123". STRING is defined with single or double quotes (single quote must end with single quote, and double with double). Whitespace within quotes are not ignored. The representation of a SYSTEM or EVENT may also be a regular expression as defined by 'regcomp(3)'. The EVENT_FIELD is the name of the field of an event that is being filtered. If the event does not contain the EVENT_FIELD, that part of the equation will be considered false. ------------------------------------------ -F 'sched : bogus == 1 || common_pid == 2' ------------------------------------------ The "bogus == 1" will always evaluate to FALSE because no event has a field called "bogus", but the "common_pid == 2" will still be evaluated since all events have the field "common_pid". Any "sched" event that was traced by the process with the PID of 2 will be shown. Note, the EVENT_FIELD is the field name as shown by an events format (as displayed with *--events*), and not what is found in the output. If the output shows "ID:foo" but the field that "foo" belongs to was called "name" in the event format, then "name" must be used in the filter. The same is true about values. If the value that is displayed is converted by to a string symbol, the filter checks the original value and not the value displayed. For example, to filter on all tasks that were in the running state at a context switch: ------------------------------------------ -F 'sched/sched_switch : prev_state==0' ------------------------------------------ Although the output displays 'R', having 'prev_stat=="R"' will not work. Note: You can also specify 'COMM' as an EVENT_FIELD. This will use the task name (or comm) of the record to compare. For example, to filter out all of the "trace-cmd" tasks: ------------------------------------------ -F '.*:COMM != "trace-cmd"' ------------------------------------------ *-v*:: This causes the following filters of *-F* to filter out the matching events. ------------------------------------------ -v -F 'sched/sched_switch : prev_state == 0' ------------------------------------------ Will not display any sched_switch events that have a prev_state of 0. Removing the *-v* will only print out those events. *-T*:: Test the filters of -F. After processing a filter string, the resulting filter will be displayed for each event. This is useful for using a filter for more than one event where a field may not exist in all events. Also it can be used to make sure there are no misspelled event field names, as they will simply be ignored. *-T* is ignored if *-F* is not specified. *-V*:: Show the plugins that are loaded. *-L*:: This will not load system wide plugins. It loads "local only". That is what it finds in the ~/.trace-cmd/plugins directory. *-N*:: This will not load any plugins. *-n* 'event-re':: This will cause all events that match the option to ignore any registered handler (by the plugins) to print the event. The normal event will be printed instead. The 'event-re' is a regular expression as defined by 'regcomp(3)'. *--profile*:: With the *--profile* option, "trace-cmd report" will process all the events first, and then output a format showing where tasks have spent their time in the kernel, as well as where they are blocked the most, and where wake up latencies are. See trace-cmd-profile(1) for more details and examples. *-H* 'event-hooks':: Add custom event matching to connect any two events together. See trace-cmd-profile(1) for format. *-R*:: This will show the events in "raw" format. That is, it will ignore the event's print formatting and just print the contents of each field. *-r* 'event-re':: This will cause all events that match the option to print its raw fields. The 'event-re' is a regular expression as defined by 'regcomp(3)'. *-l*:: This adds a "latency output" format. Information about interrupts being disabled, soft irq being disabled, the "need_resched" flag being set, preempt count, and big kernel lock are all being recorded with every event. But the default display does not show this information. This option will set display this information with 6 characters. When one of the fields is zero or N/A a \'.\' is shown. ------------------------------------------ -0 0d.h1. 106467.859747: function: ktime_get <-- tick_check_idle ------------------------------------------ The 0d.h1. denotes this information. The first character is never a '.' and represents what CPU the trace was recorded on (CPU 0). The 'd' denotes that interrupts were disabled. The 'h' means that this was called inside an interrupt handler. The '1' is the preemption disabled (preempt_count) was set to one. The two '.'s are "need_resched" flag and kernel lock counter. If the "need_resched" flag is set, then that character would be a 'N'. *-w*:: If both the 'sched_switch' and 'sched_wakeup' events are enabled, then this option will report the latency between the time the task was first woken, and the time it was scheduled in. *-q*:: Quiet non critical warnings. *-O*:: Pass options to the trace-cmd plugins that are loaded. -O plugin:var=value The 'plugin:' and '=value' are optional. Value may be left off for options that are boolean. If the 'plugin:' is left off, then any variable that matches in all plugins will be set. Example: -O fgraph:tailprint *--stat*:: If the trace.dat file recorded the final stats (outputed at the end of record) the *--stat* option can be used to retrieve them. *--uname*:: If the trace.dat file recorded uname during the run, this will retrieve that information. EXAMPLES -------- Using a trace.dat file that was created with: ------------------------------------------ # trace-cmd record -p function -e all sleep 5 ------------------------------------------ The default report shows: ------------------------------------------ # trace-cmd report trace-cmd-16129 [002] 158126.498411: function: __mutex_unlock_slowpath <-- mutex_unlock trace-cmd-16131 [000] 158126.498411: kmem_cache_alloc: call_site=811223c5 ptr=0xffff88003ecf2b40 bytes_req=272 bytes_alloc=320 gfp_flags=GFP_KERNEL|GFP_ZERO trace-cmd-16130 [003] 158126.498411: function: do_splice_to <-- sys_splice sleep-16133 [001] 158126.498412: function: inotify_inode_queue_event <-- vfs_write trace-cmd-16129 [002] 158126.498420: lock_release: 0xffff88003f1fa4f8 &sb->s_type->i_mutex_key trace-cmd-16131 [000] 158126.498421: function: security_file_alloc <-- get_empty_filp sleep-16133 [001] 158126.498422: function: __fsnotify_parent <-- vfs_write trace-cmd-16130 [003] 158126.498422: function: rw_verify_area <-- do_splice_to trace-cmd-16131 [000] 158126.498424: function: cap_file_alloc_security <-- security_file_alloc trace-cmd-16129 [002] 158126.498425: function: syscall_trace_leave <-- int_check_syscall_exit_work sleep-16133 [001] 158126.498426: function: inotify_dentry_parent_queue_event <-- vfs_write trace-cmd-16130 [003] 158126.498426: function: security_file_permission <-- rw_verify_area trace-cmd-16129 [002] 158126.498428: function: audit_syscall_exit <-- syscall_trace_leave [...] ------------------------------------------ To see everything but the function traces: ------------------------------------------ # trace-cmd report -v -F 'function' trace-cmd-16131 [000] 158126.498411: kmem_cache_alloc: call_site=811223c5 ptr=0xffff88003ecf2b40 bytes_req=272 bytes_alloc=320 gfp_flags=GFP_KERNEL|GFP_ZERO trace-cmd-16129 [002] 158126.498420: lock_release: 0xffff88003f1fa4f8 &sb->s_type->i_mutex_key trace-cmd-16130 [003] 158126.498436: lock_acquire: 0xffffffff8166bf78 read all_cpu_access_lock trace-cmd-16131 [000] 158126.498438: lock_acquire: 0xffff88003df5b520 read &fs->lock trace-cmd-16129 [002] 158126.498446: kfree: call_site=810a7abb ptr=0x0 trace-cmd-16130 [003] 158126.498448: lock_acquire: 0xffff880002250a80 &per_cpu(cpu_access_lock, cpu) trace-cmd-16129 [002] 158126.498450: sys_exit_splice: 0xfffffff5 trace-cmd-16131 [000] 158126.498454: lock_release: 0xffff88003df5b520 &fs->lock sleep-16133 [001] 158126.498456: kfree: call_site=810a7abb ptr=0x0 sleep-16133 [001] 158126.498460: sys_exit_write: 0x1 trace-cmd-16130 [003] 158126.498462: kmalloc: call_site=810bf95b ptr=0xffff88003dedc040 bytes_req=24 bytes_alloc=32 gfp_flags=GFP_KERNEL|GFP_ZERO ------------------------------------------ To see only the kmalloc calls that were greater than 1000 bytes: ------------------------------------------ #trace-cmd report -F 'kmalloc: bytes_req > 1000' -0 [000] 158128.126641: kmalloc: call_site=81330635 ptr=0xffff88003c2fd000 bytes_req=2096 bytes_alloc=4096 gfp_flags=GFP_ATOMIC ------------------------------------------ To see wakeups and sched switches that left the previous task in the running state: ------------------------------------------ # trace-cmd report -F 'sched: prev_state == 0 || (success == 1)' trace-cmd-16132 [002] 158126.499951: sched_wakeup: comm=trace-cmd pid=16129 prio=120 success=1 target_cpu=002 trace-cmd-16132 [002] 158126.500401: sched_switch: prev_comm=trace-cmd prev_pid=16132 prev_prio=120 prev_state=R ==> next_comm=trace-cmd next_pid=16129 next_prio=120 -0 [003] 158126.500585: sched_wakeup: comm=trace-cmd pid=16130 prio=120 success=1 target_cpu=003 -0 [003] 158126.501241: sched_switch: prev_comm=swapper prev_pid=0 prev_prio=120 prev_state=R ==> next_comm=trace-cmd next_pid=16130 next_prio=120 trace-cmd-16132 [000] 158126.502475: sched_wakeup: comm=trace-cmd pid=16131 prio=120 success=1 target_cpu=000 trace-cmd-16131 [002] 158126.506516: sched_wakeup: comm=trace-cmd pid=16129 prio=120 success=1 target_cpu=002 -0 [003] 158126.550110: sched_switch: prev_comm=swapper prev_pid=0 prev_prio=120 prev_state=R ==> next_comm=trace-cmd next_pid=16130 next_prio=120 trace-cmd-16131 [003] 158126.570243: sched_wakeup: comm=trace-cmd pid=16129 prio=120 success=1 target_cpu=003 trace-cmd-16130 [002] 158126.618202: sched_switch: prev_comm=trace-cmd prev_pid=16130 prev_prio=120 prev_state=R ==> next_comm=yum-updatesd next_pid=3088 next_prio=1 20 trace-cmd-16129 [003] 158126.622379: sched_wakeup: comm=trace-cmd pid=16131 prio=120 success=1 target_cpu=003 trace-cmd-16129 [000] 158126.649287: sched_wakeup: comm=trace-cmd pid=16131 prio=120 success=1 target_cpu=000 ------------------------------------------ The above needs a little explanation. The filter specifies the "sched" subsystem, which includes both sched_switch and sched_wakeup events. Any event that does not have the format field "prev_state" or "success", will evaluate those expressions as FALSE, and will not produce a match. Using "||" will have the "prev_state" test happen for the "sched_switch" event and the "success" test happen for the "sched_wakeup" event. ------------------------------------------ # trace-cmd report -w -F 'sched_switch, sched_wakeup.*' [...] trace-cmd-16130 [003] 158131.580616: sched_wakeup: comm=trace-cmd pid=16131 prio=120 success=1 target_cpu=003 trace-cmd-16129 [000] 158131.581502: sched_switch: prev_comm=trace-cmd prev_pid=16129 prev_prio=120 prev_state=S ==> next_comm=trace-cmd next_pid=16131 next_prio=120 Latency: 885.901 usecs trace-cmd-16131 [000] 158131.582414: sched_wakeup: comm=trace-cmd pid=16129 prio=120 success=1 target_cpu=000 trace-cmd-16132 [001] 158131.583219: sched_switch: prev_comm=trace-cmd prev_pid=16132 prev_prio=120 prev_state=S ==> next_comm=trace-cmd next_pid=16129 next_prio=120 Latency: 804.809 usecs sleep-16133 [002] 158131.584121: sched_wakeup: comm=trace-cmd pid=16120 prio=120 success=1 target_cpu=002 trace-cmd-16129 [001] 158131.584128: sched_wakeup: comm=trace-cmd pid=16132 prio=120 success=1 target_cpu=001 sleep-16133 [002] 158131.584275: sched_switch: prev_comm=sleep prev_pid=16133 prev_prio=120 prev_state=R ==> next_comm=trace-cmd next_pid=16120 next_prio=120 Latency: 153.915 usecs trace-cmd-16130 [003] 158131.585284: sched_switch: prev_comm=trace-cmd prev_pid=16130 prev_prio=120 prev_state=S ==> next_comm=trace-cmd next_pid=16132 next_prio=120 Latency: 1155.677 usecs Average wakeup latency: 26626.656 usecs ------------------------------------------ The above trace produces the wakeup latencies of the tasks. The "sched_switch" event reports each individual latency after writing the event information. At the end of the report, the average wakeup latency is reported. ------------------------------------------ # trace-cmd report -w -F 'sched_switch, sched_wakeup.*: prio < 100 || next_prio < 100' -0 [003] 158131.516753: sched_wakeup: comm=ksoftirqd/3 pid=13 prio=49 success=1 target_cpu=003 -0 [003] 158131.516855: sched_switch: prev_comm=swapper prev_pid=0 prev_prio=120 prev_state=R ==> next_comm=ksoftirqd/3 next_pid=13 next_prio=49 Latency: 101.244 usecs -0 [003] 158131.533781: sched_wakeup: comm=ksoftirqd/3 pid=13 prio=49 success=1 target_cpu=003 -0 [003] 158131.533897: sched_switch: prev_comm=swapper prev_pid=0 prev_prio=120 prev_state=R ==> next_comm=ksoftirqd/3 next_pid=13 next_prio=49 Latency: 115.608 usecs -0 [003] 158131.569730: sched_wakeup: comm=ksoftirqd/3 pid=13 prio=49 success=1 target_cpu=003 -0 [003] 158131.569851: sched_switch: prev_comm=swapper prev_pid=0 prev_prio=120 prev_state=R ==> next_comm=ksoftirqd/3 next_pid=13 next_prio=49 Latency: 121.024 usecs Average wakeup latency: 110.021 usecs ------------------------------------------ The above version will only show the wakeups and context switches of Real Time tasks. The 'prio' used inside the kernel starts at 0 for highest priority. That is 'prio' 0 is equivalent to user space real time priority 99, and priority 98 is equivalent to user space real time priority 1. Prios less than 100 represent Real Time tasks. An example of the profile: ------------------------------------------ # trace-cmd record --profile sleep 1 # trace-cmd report --profile --comm sleep task: sleep-21611 Event: sched_switch:R (1) Total: 99442 Avg: 99442 Max: 99442 Min:99442 1 total:99442 min:99442 max:99442 avg=99442 => ftrace_raw_event_sched_switch (0xffffffff8105f812) => __schedule (0xffffffff8150810a) => preempt_schedule (0xffffffff8150842e) => ___preempt_schedule (0xffffffff81273354) => cpu_stop_queue_work (0xffffffff810b03c5) => stop_one_cpu (0xffffffff810b063b) => sched_exec (0xffffffff8106136d) => do_execve_common.isra.27 (0xffffffff81148c89) => do_execve (0xffffffff811490b0) => SyS_execve (0xffffffff811492c4) => return_to_handler (0xffffffff8150e3c8) => stub_execve (0xffffffff8150c699) Event: sched_switch:S (1) Total: 1000506680 Avg: 1000506680 Max: 1000506680 Min:1000506680 1 total:1000506680 min:1000506680 max:1000506680 avg=1000506680 => ftrace_raw_event_sched_switch (0xffffffff8105f812) => __schedule (0xffffffff8150810a) => schedule (0xffffffff815084b8) => do_nanosleep (0xffffffff8150b22c) => hrtimer_nanosleep (0xffffffff8108d647) => SyS_nanosleep (0xffffffff8108d72c) => return_to_handler (0xffffffff8150e3c8) => tracesys_phase2 (0xffffffff8150c304) Event: sched_wakeup:21611 (1) Total: 30326 Avg: 30326 Max: 30326 Min:30326 1 total:30326 min:30326 max:30326 avg=30326 => ftrace_raw_event_sched_wakeup_template (0xffffffff8105f653) => ttwu_do_wakeup (0xffffffff810606eb) => ttwu_do_activate.constprop.124 (0xffffffff810607c8) => try_to_wake_up (0xffffffff8106340a) ------------------------------------------ SEE ALSO -------- trace-cmd(1), trace-cmd-record(1), trace-cmd-start(1), trace-cmd-stop(1), trace-cmd-extract(1), trace-cmd-reset(1), trace-cmd-split(1), trace-cmd-list(1), trace-cmd-listen(1), trace-cmd-profile(1) AUTHOR ------ Written by Steven Rostedt, RESOURCES --------- git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/trace-cmd.git COPYING ------- Copyright \(C) 2010 Red Hat, Inc. Free use of this software is granted under the terms of the GNU Public License (GPL). trace-cmd-2.5.3/Documentation/trace-cmd-reset.1.txt000066400000000000000000000045561246701203100220560ustar00rootroot00000000000000TRACE-CMD-RESET(1) ================== NAME ---- trace-cmd-reset - turn off all Ftrace tracing to bring back full performance SYNOPSIS -------- *trace-cmd reset* ['OPTIONS'] DESCRIPTION ----------- The trace-cmd(1) reset command turns off all tracing of Ftrace. This will bring back the performance of the system before tracing was enabled. This is necessary since 'trace-cmd-record(1)', 'trace-cmd-stop(1)' and 'trace-cmd-extract(1)' do not disable the tracer, event after the data has been pulled from the buffers. The rational is that the user may want to manually enable the tracer with the Ftrace pseudo file system, or examine other parts of Ftrace to see what trace-cmd did. After the reset command happens, the data in the ring buffer, and the options that were used are all lost. OPTIONS ------- *-b* 'buffer_size':: When the kernel boots, the Ftrace ring buffer is of a minimal size (3 pages per CPU). The first time the tracer is used, the ring buffer size expands to what it was set for (default 1.4 Megs per CPU). If no more tracing is to be done, this option allows you to shrink the ring buffer down to free up available memory. trace-cmd reset -b 1 *-B* 'buffer-name':: If the kernel supports multiple buffers, this will reset the trace for only the given buffer. It does not affect any other buffer. This may be used multiple times to specify different buffers. The top level buffer will not be reset if this option is given (unless the *-t* option is also supplied). *-d*:: Delete the previously specified buffer instance that was specified by the *-B* option. It is invalid to use with *-t* as the top level instance can not be deleted. *-t*:: Resets the top level instance buffer. Without the *-B* option this is the same as the default. But if *-B* is used, this is required if the top level instance buffer should also be reset. SEE ALSO -------- trace-cmd(1), trace-cmd-record(1), trace-cmd-report(1), trace-cmd-start(1), trace-cmd-stop(1), trace-cmd-extract(1), trace-cmd-split(1), trace-cmd-list(1), trace-cmd-listen(1) AUTHOR ------ Written by Steven Rostedt, RESOURCES --------- git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/trace-cmd.git COPYING ------- Copyright \(C) 2010 Red Hat, Inc. Free use of this software is granted under the terms of the GNU Public License (GPL). trace-cmd-2.5.3/Documentation/trace-cmd-restore.1.txt000066400000000000000000000077471246701203100224240ustar00rootroot00000000000000TRACE-CMD-RESTORE(1) ==================== NAME ---- trace-cmd-restore - restore a failed trace record SYNOPSIS -------- *trace-cmd restore* ['OPTIONS'] ['command'] cpu-file [cpu-file ...] DESCRIPTION ----------- The trace-cmd(1) restore command will restore a crashed trace-cmd-record(1) file. If for some reason a trace-cmd record fails, it will leave a the per-cpu data files and not create the final trace.dat file. The trace-cmd restore will append the files to create a working trace.dat file that can be read with trace-cmd-report(1). When trace-cmd record runs, it spawns off a process per CPU and writes to a per cpu file usually called 'trace.dat.cpuX', where X represents the CPU number that it is tracing. If the -o option was used in the trace-cmd record, then the CPU data files will have that name instead of the 'trace.dat' name. If a unexpected crash occurs before the tracing is finished, then the per CPU files will still exist but there will not be any trace.dat file to read from. trace-cmd restore will allow you to create a trace.dat file with the existing data files. OPTIONS ------- *-c*:: Create a partial trace.dat file from the machine, to be used with a full trace-cmd restore at another time. This option is useful for embedded devices. If a server contains the cpu files of a crashed trace-cmd record (or trace-cmd listen), trace-cmd restore can be executed on the embedded device with the -c option to get all the stored information of that embedded device. Then the file created could be copied to the server to run the trace-cmd restore there with the cpu files. If *-o* is not specified, then the file created will be called 'trace-partial.dat'. This is because the file is not a full version of something that trace-cmd-report(1) could use. *-t* tracing_dir:: Used with *-c*, it overrides the location to read the events from. By default, tracing information is read from the debugfs/tracing directory. *-t* will use that location instead. This can be useful if the trace.dat file to create is from another machine. Just tar -cvf events.tar debugfs/tracing and copy and untar that file locally, and use that directory instead. *-k* kallsyms:: Used with *-c*, it overrides where to read the kallsyms file from. By default, /proc/kallsyms is used. *-k* will override the file to read the kallsyms from. This can be useful if the trace.dat file to create is from another machine. Just copy the /proc/kallsyms file locally, and use *-k* to point to that file. *-o* output':: By default, trace-cmd restore will create a 'trace.dat' file (or 'trace-partial.dat' if *-c* is specified). You can specify a different file to write to with the *-o* option. *-i* input:: By default, trace-cmd restore will read the information of the current system to create the initial data stored in the 'trace.dat' file. If the crash was on another machine, then that machine should have the trace-cmd restore run with the *-c* option to create the trace.dat partial file. Then that file can be copied to the current machine where trace-cmd restore will use *-i* to load that file instead of reading from the current system. EXAMPLES -------- If a crash happened on another box, you could run: $ trace-cmd restore -c -o box-partial.dat Then on the server that has the cpu files: $ trace-cmd restore -i box-partial.dat trace.dat.cpu0 trace.dat.cpu1 This would create a trace.dat file for the embedded box. SEE ALSO -------- trace-cmd(1), trace-cmd-record(1), trace-cmd-report(1), trace-cmd-start(1), trace-cmd-stop(1), trace-cmd-extract(1), trace-cmd-reset(1), trace-cmd-split(1), trace-cmd-list(1), trace-cmd-listen(1) AUTHOR ------ Written by Steven Rostedt, RESOURCES --------- git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/trace-cmd.git COPYING ------- Copyright \(C) 2010 Red Hat, Inc. Free use of this software is granted under the terms of the GNU Public License (GPL). trace-cmd-2.5.3/Documentation/trace-cmd-show.1.txt000066400000000000000000000053241246701203100217060ustar00rootroot00000000000000TRACE-CMD-SHOW(1) =================== NAME ---- trace-cmd-show - show the contents of the Ftrace Linux kernel tracing buffer. SYNOPSIS -------- *trace-cmd show* ['OPTIONS'] DESCRIPTION ----------- The trace-cmd(1) show displays the contents of one of the Ftrace Linux kernel tracing files: trace, snapshot, or trace_pipe. It is basically the equivalent of doing: cat /sys/kernel/debug/tracing/trace OPTIONS ------- *-p*:: Instead of displaying the contents of the "trace" file, use the "trace_pipe" file. The difference between the two is that the "trace" file is static. That is, if tracing is stopped, the "trace" file will show the same contents each time. The "trace_pipe" file is a consuming read, where a read of the file will consume the output of what was read and it will not read the same thing a second time even if tracing is stopped. This file als will block. If no data is available, trace-cmd show will stop and wait for data to appear. *-s*:: Instead of reading the "trace" file, read the snapshot file. The snapshot is made by an application writing into it and the kernel will perform as swap between the currently active buffer and the current snapshot buffer. If no more swaps are made, the snapshot will remain static. This is not a consuming read. *-c* 'cpu':: Read only the trace file for a specified CPU. *-f*:: Display the full path name of the file that is being displayed. *-B* 'buf':: If a buffer instance was created, then the *-B* option will access the files associated with the given buffer. *--tracing_on*:: Show if tracing is on for the given instance. *--current_tracer*:: Show what the current tracer is. *--buffer_size*:: Show the current buffer size (per-cpu) *--buffer_total_size*:: Show the total size of all buffers. *--ftrace_filter*:: Show what function filters are set. *--ftrace_notrace*:: Show what function disabled filters are set. *--ftrace_pid*:: Show the PIDs the function tracer is limited to (if any). *--graph_function*:: Show the functions that will be graphed. *--graph_notrace*:: Show the functions that will not be graphed. *--cpumask*:: Show the mask of CPUs that tracing will trace. SEE ALSO -------- trace-cmd(1), trace-cmd-record(1), trace-cmd-report(1), trace-cmd-start(1), trace-cmd-extract(1), trace-cmd-reset(1), trace-cmd-split(1), trace-cmd-list(1), trace-cmd-listen(1) AUTHOR ------ Written by Steven Rostedt, RESOURCES --------- git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/trace-cmd.git COPYING ------- Copyright \(C) 2010 Red Hat, Inc. Free use of this software is granted under the terms of the GNU Public License (GPL). trace-cmd-2.5.3/Documentation/trace-cmd-snapshot.1.txt000066400000000000000000000032151246701203100225620ustar00rootroot00000000000000TRACE-CMD-SNAPSHOT(1) =================== NAME ---- trace-cmd-snapshot - take, reset, free, or show a Ftrace kernel snapshot SYNOPSIS -------- *trace-cmd snapshot* ['OPTIONS'] DESCRIPTION ----------- The trace-cmd(1) snapshot controls or displays the Ftrace Linux kernel snapshot feature (if the kernel supports it). This is useful to "freeze" an instance of a live trace but without stopping the trace. trace-cmd start -p function trace-cmd snapshot -s trace-cmd snapshot [ dumps the content of buffer at 'trace-cmd snapshot -s' ] trace-cmd snapshot -s trace-cmd snapshot [ dumps the new content of the buffer at the last -s operation ] OPTIONS ------- *-s*:: Take a snapshot of the currently running buffer. *-r*:: Clear out the buffer. *-f*:: Free the snapshot buffer. The buffer takes up memory inside the kernel. It is best to free it when not in use. The first -s operation will allocate it if it is not already allocated. *-c* 'cpu':: Operate on a per cpu snapshot (may not be fully supported by all kernels) *-B* 'buf':: If a buffer instance was created, then the *-B* option will operate on the snapshot within the buffer. SEE ALSO -------- trace-cmd(1), trace-cmd-record(1), trace-cmd-report(1), trace-cmd-start(1), trace-cmd-extract(1), trace-cmd-reset(1), trace-cmd-split(1), trace-cmd-list(1), trace-cmd-listen(1) AUTHOR ------ Written by Steven Rostedt, RESOURCES --------- git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/trace-cmd.git COPYING ------- Copyright \(C) 2010 Red Hat, Inc. Free use of this software is granted under the terms of the GNU Public License (GPL). trace-cmd-2.5.3/Documentation/trace-cmd-split.1.txt000066400000000000000000000062561246701203100220660ustar00rootroot00000000000000TRACE-CMD-SPLIT(1) ================== NAME ---- trace-cmd-split - split a trace.dat file into smaller files SYNOPSIS -------- *trace-cmd split* ['OPTIONS'] ['start-time' ['end-time']] DESCRIPTION ----------- The trace-cmd(1) split is used to break up a trace.dat into small files. The 'start-time' specifies where the new file will start at. Using 'trace-cmd-report(1)' and copying the time stamp given at a particular event, can be used as input for either 'start-time' or 'end-time'. The split will stop creating files when it reaches an event after 'end-time'. If only the end-time is needed, use 0.0 as the start-time. If start-time is left out, then the split will start at the beginning of the file. If end-time is left out, then split will continue to the end unless it meets one of the requirements specified by the options. OPTIONS ------- *-i* 'file':: If this option is not specified, then the split command will look for the file named 'trace.dat'. This options will allow the reading of another file other than 'trace.dat'. *-o* 'file':: By default, the split command will use the input file name as a basis of where to write the split files. The output file will be the input file with an attached \'.#\' to the end: trace.dat.1, trace.dat.2, etc. This option will change the name of the base file used. -o file will create file.1, file.2, etc. *-s* 'seconds':: This specifies how many seconds should be recorded before the new file should stop. *-m* 'milliseconds':: This specifies how many milliseconds should be recorded before the new file should stop. *-u* 'microseconds':: This specifies how many microseconds should be recorded before the new file should stop. *-e* 'events':: This specifies how many events should be recorded before the new file should stop. *-p* 'pages':: This specifies the number of pages that should be recorded before the new file should stop. Note: only one of *-p*, *-e*, *-u*, *-m*, *-s* may be specified at a time. If *-p* is specified, then *-c* is automatically set. *-r*:: This option causes the break up to repeat until end-time is reached (or end of the input if end-time is not specified). trace-cmd split -r -e 10000 This will break up trace.dat into several smaller files, each with at most 10,000 events in it. *-c*:: This option causes the above break up to be per CPU. trace-cmd split -c -p 10 This will create a file that has 10 pages per each CPU from the input. *-C* 'cpu':: This option will split for a single CPU. Only the cpu named will be extracted from the file. trace-cmd split -C 1 This will split out all the events for cpu 1 in the file. SEE ALSO -------- trace-cmd(1), trace-cmd-record(1), trace-cmd-report(1), trace-cmd-start(1), trace-cmd-stop(1), trace-cmd-extract(1), trace-cmd-reset(1), trace-cmd-list(1), trace-cmd-listen(1) AUTHOR ------ Written by Steven Rostedt, RESOURCES --------- git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/trace-cmd.git COPYING ------- Copyright \(C) 2010 Red Hat, Inc. Free use of this software is granted under the terms of the GNU Public License (GPL). trace-cmd-2.5.3/Documentation/trace-cmd-stack.1.txt000066400000000000000000000023001246701203100220220ustar00rootroot00000000000000TRACE-CMD-STACK(1) ================== NAME ---- trace-cmd-stack - read, enable or disable Ftrace Linux kernel stack tracing. SYNOPSIS -------- *trace-cmd stack* DESCRIPTION ----------- The trace-cmd(1) stack enables the Ftrace stack tracer within the kernel. The stack tracer enables the function tracer and at each function call within the kernel, the stack is checked. When a new maximum usage stack is discovered, it is recorded. When no option is used, the current stack is displayed. To enable the stack tracer, use the option *--start*, and to disable the stack tracer, use the option *--stop*. The output will be the maximum stack found since the start was enabled. Use *--reset* to reset the stack counter to zero. SEE ALSO -------- trace-cmd(1), trace-cmd-record(1), trace-cmd-report(1), trace-cmd-start(1), trace-cmd-extract(1), trace-cmd-reset(1), trace-cmd-split(1), trace-cmd-list(1), trace-cmd-listen(1) AUTHOR ------ Written by Steven Rostedt, RESOURCES --------- git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/trace-cmd.git COPYING ------- Copyright \(C) 2010 Red Hat, Inc. Free use of this software is granted under the terms of the GNU Public License (GPL). trace-cmd-2.5.3/Documentation/trace-cmd-start.1.txt000066400000000000000000000023621246701203100220620ustar00rootroot00000000000000TRACE-CMD-START(1) =================== NAME ---- trace-cmd-start - start the Ftrace Linux kernel tracer without recording SYNOPSIS -------- *trace-cmd start* ['OPTIONS'] DESCRIPTION ----------- The trace-cmd(1) start enables all the Ftrace tracing the same way trace-cmd-record(1) does. The difference is that it does not run threads to create a trace.dat file. This is useful just to enable Ftrace and you are only interested in the trace after some event has occurred and the trace is stopped. Then the trace can be read straight from the Ftrace pseudo file system or can be extracted with trace-cmd-extract(1). OPTIONS ------- The options are the same as 'trace-cmd-record(1)', except that it does not take options specific to recording (*-s*, *-o*, *-F*, *-N*, and *-t*). SEE ALSO -------- trace-cmd(1), trace-cmd-record(1), trace-cmd-report(1), trace-cmd-stop(1), trace-cmd-extract(1), trace-cmd-reset(1), trace-cmd-split(1), trace-cmd-list(1), trace-cmd-listen(1) AUTHOR ------ Written by Steven Rostedt, RESOURCES --------- git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/trace-cmd.git COPYING ------- Copyright \(C) 2010 Red Hat, Inc. Free use of this software is granted under the terms of the GNU Public License (GPL). trace-cmd-2.5.3/Documentation/trace-cmd-stat.1.txt000066400000000000000000000033601246701203100216770ustar00rootroot00000000000000TRACE-CMD-STAT(1) ================== NAME ---- trace-cmd-stat - show the status of the tracing (ftrace) system SYNOPSIS -------- *trace-cmd stat* DESCRIPTION ----------- The trace-cmd(1) stat displays the various status of the tracing (ftrace) system. The status that it shows is: *Tracer:* if one of the tracers (like function_graph) is active. Otherwise nothing is displayed. *Events:* Lists the events that are enable. *Event filters:* Shows any filters that are set for any events *Function filters:* Shows any filters for the function tracers *Graph functions:* Shows any functions that the function graph tracer should graph *Buffers:* Shows the trace buffer size if they have been expanded. By default, tracing buffers are in a compressed format until they are used. If they are compressed, the buffer display will not be shown. *Trace clock:* If the tracing clock is anything other than the default "local" it will be displayed. *Trace CPU mask:* If not all available CPUs are in the tracing CPU mask, then the tracing CPU mask will be displayed. *Trace max latency:* Shows the value of the trace max latency if it is other than zero. *Kprobes:* Shows any kprobes that are defined for tracing. *Uprobes:* Shows any uprobes that are defined for tracing. SEE ALSO -------- trace-cmd(1), trace-cmd-record(1), trace-cmd-report(1), trace-cmd-start(1), trace-cmd-stop(1), trace-cmd-extract(1), trace-cmd-reset(1), trace-cmd-split(1), trace-cmd-listen(1) AUTHOR ------ Written by Steven Rostedt, RESOURCES --------- git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/trace-cmd.git COPYING ------- Copyright \(C) 2014 Red Hat, Inc. Free use of this software is granted under the terms of the GNU Public License (GPL). trace-cmd-2.5.3/Documentation/trace-cmd-stop.1.txt000066400000000000000000000033571246701203100217170ustar00rootroot00000000000000TRACE-CMD-STOP(1) =================== NAME ---- trace-cmd-stop - stop the Ftrace Linux kernel tracer from writing to the ring buffer. SYNOPSIS -------- *trace-cmd stop* ['OPTIONS'] DESCRIPTION ----------- The trace-cmd(1) stop is a complement to 'trace-cmd-start(1)'. This will disable Ftrace from writing to the ring buffer. This does not stop the overhead that the tracing may incur. Only the updating of the ring buffer is disabled, the Ftrace tracing may still be inducing overhead. After stopping the trace, the 'trace-cmd-extract(1)' may strip out the data from the ring buffer and create a trace.dat file. The Ftrace pseudo file system may also be examined. To disable the tracing completely to remove the overhead it causes, use 'trace-cmd-reset(1)'. But after a reset is performed, the data that has been recorded is lost. OPTIONS ------- *-B* 'buffer-name':: If the kernel supports multiple buffers, this will stop the trace for only the given buffer. It does not affect any other buffer. This may be used multiple times to specify different buffers. *-t*:: Stops the top level instance buffer. Without the *-B* option this is the same as the default. But if *-B* is used, this is required if the top level instance buffer should also be stopped. SEE ALSO -------- trace-cmd(1), trace-cmd-record(1), trace-cmd-report(1), trace-cmd-start(1), trace-cmd-extract(1), trace-cmd-reset(1), trace-cmd-split(1), trace-cmd-list(1), trace-cmd-listen(1) AUTHOR ------ Written by Steven Rostedt, RESOURCES --------- git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/trace-cmd.git COPYING ------- Copyright \(C) 2010 Red Hat, Inc. Free use of this software is granted under the terms of the GNU Public License (GPL). trace-cmd-2.5.3/Documentation/trace-cmd-stream.1.txt000066400000000000000000000027031246701203100222170ustar00rootroot00000000000000TRACE-CMD-STREAM(1) =================== NAME ---- trace-cmd-stream - stream a trace to stdout as it is happening SYNOPSIS -------- *trace-cmd stream ['OPTIONS']* ['command'] DESCRIPTION ----------- The trace-cmd(1) stream will start tracing just like trace-cmd-record(1), except it will not record to a file and instead it will read the binary buffer as it is happening, convert it to a human readable format and write it to stdout. This is basically the same as trace-cmd-start(1) and then doing a trace-cmd-show(1) with the *-p* option. trace-cmd-stream is not as efficient as reading from the pipe file as most of the stream work is done in userspace. This is useful if it is needed to do the work mostly in userspace instead of the kernel, and stream also helps to debug trace-cmd-profile(1) which uses the stream code to perform the live data analysis for the profile. OPTIONS ------- These are the same as trace-cmd-record(1), except that it does not take the *-o* option. SEE ALSO -------- trace-cmd(1), trace-cmd-record(1), trace-cmd-report(1), trace-cmd-start(1), trace-cmd-stop(1), trace-cmd-reset(1), trace-cmd-split(1), trace-cmd-list(1), trace-cmd-listen(1) AUTHOR ------ Written by Steven Rostedt, RESOURCES --------- git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/trace-cmd.git COPYING ------- Copyright \(C) 2014 Red Hat, Inc. Free use of this software is granted under the terms of the GNU Public License (GPL). trace-cmd-2.5.3/Documentation/trace-cmd.1.txt000066400000000000000000000047121246701203100207300ustar00rootroot00000000000000TRACE-CMD(1) ============ NAME ---- trace-cmd - interacts with Ftrace Linux kernel internal tracer SYNOPSIS -------- *trace-cmd* 'COMMAND' ['OPTIONS'] DESCRIPTION ----------- The trace-cmd(1) command interacts with the Ftrace tracer that is built inside the Linux kernel. It interfaces with the Ftrace specific files found in the debugfs file system under the tracing directory. A 'COMMAND' must be specified to tell trace-cmd what to do. COMMANDS -------- record - record a live trace and write a trace.dat file to the local disk or to the network. report - reads a trace.dat file and converts the binary data to a ASCII text readable format. hist - show a histogram of the events. stat - show tracing (ftrace) status of the running system options - list the plugin options that are available to *report* start - start the tracing without recording to a trace.dat file. stop - stop tracing (only disables recording, overhead of tracer is still in effect) restart - restart tracing from a previous stop (only effects recording) extract - extract the data from the kernel buffer and create a trace.dat file. reset - disables all tracing and gives back the system performance. (clears all data from the kernel buffers) split - splits a trace.dat file into smaller files. list - list the available plugins or events that can be recorded. listen - open up a port to listen for remote tracing connections. restore - restore the data files of a crashed run of trace-cmd record stack - run and display the stack tracer check-events - parse format strings for all trace events and return whether all formats are parseable OPTIONS ------- *-h*, --help:: Display the help text. Other options see the man page for the corresponding command. SEE ALSO -------- trace-cmd-record(1), trace-cmd-report(1), trace-cmd-hist(1), trace-cmd-start(1), trace-cmd-stop(1), trace-cmd-extract(1), trace-cmd-reset(1), trace-cmd-restore(1), trace-cmd-stack(1), trace-cmd-split(1), trace-cmd-list(1), trace-cmd-listen(1), trace-cmd.dat(5), trace-cmd-check-events(1) trace-cmd-stat(1) AUTHOR ------ Written by Steven Rostedt, RESOURCES --------- git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/trace-cmd.git COPYING ------- Copyright \(C) 2010 Red Hat, Inc. Free use of this software is granted under the terms of the GNU Public License (GPL). trace-cmd-2.5.3/Documentation/trace-cmd.dat.5.txt000066400000000000000000000167761246701203100215200ustar00rootroot00000000000000TRACE-CMD.DAT(5) =============== NAME ---- trace-cmd.dat - trace-cmd file format SYNOPSIS -------- *trace-cmd.dat* ignore DESCRIPTION ----------- The trace-cmd(1) utility produces a "trace.dat" file. The file may also be named anything depending if the user specifies a different output name, but it must have a certain binary format. The file is used by trace-cmd to save kernel traces into it and be able to extract the trace from it at a later point (see *trace-cmd-report(1)*). INITIAL FORMAT -------------- The first three bytes contain the magic value: 0x17 0x08 0x44 The next 7 bytes contain the characters: "tracing" The next set of characters contain a null '\0' terminated string that contains the version of the file (for example): "6\0" The next 1 byte contains the flags for the file endianess: 0 = little endian 1 = big endian The next byte contains the number of bytes per "long" value: 4 - 32-bit long values 8 - 64-bit long values Note: This is the long size of the target's userspace. Not the kernel space size. [ Now all numbers are written in file defined endianess. ] The next 4 bytes are a 32-bit word that defines what the traced host machine page size was. HEADER INFO FORMAT ------------------ Directly after the initial format comes information about the trace headers recorded from the target box. The next 12 bytes contain the string: "header_page\0" The next 8 bytes are a 64-bit word containing the size of the page header information stored next. The next set of data is of the size read from the previous 8 bytes, and contains the data retrieved from debugfs/tracing/events/header_page. Note: The size of the second field \fBcommit\fR contains the target kernel long size. For example: field: local_t commit; offset:8; \fBsize:8;\fR signed:1; shows the kernel has a 64-bit long. The next 13 bytes contain the string: "header_event\0" The next 8 bytes are a 64-bit word containing the size of the event header information stored next. The next set of data is of the size read from the previous 8 bytes and contains the data retrieved from debugfs/tracing/events/header_event. This data allows the trace-cmd tool to know if the ring buffer format of the kernel made any changes. FTRACE EVENT FORMATS -------------------- Directly after the header information comes the information about the Ftrace specific events. These are the events used by the Ftrace plugins and are not enabled by the event tracing. The next 4 bytes contain a 32-bit word of the number of Ftrace event format files that are stored in the file. For the number of times defined by the previous 4 bytes is the following: 8 bytes for the size of the Ftrace event format file. The Ftrace event format file copied from the target machine: debugfs/tracing/events/ftrace//format EVENT FORMATS ------------- Directly after the Ftrace formats comes the information about the event layout. The next 4 bytes are a 32-bit word containing the number of event systems that are stored in the file. These are the directories in debugfs/tracing/events excluding the \fBftrace\fR directory. For the number of times defined by the previous 4 bytes is the following: A null-terminated string containing the system name. 4 bytes containing a 32-bit word containing the number of events within the system. For the number of times defined in the previous 4 bytes is the following: 8 bytes for the size of the event format file. The event format file copied from the target machine: debugfs/tracing/events///format KALLSYMS INFORMATION -------------------- Directly after the event formats comes the information of the mapping of function addresses to the function names. The next 4 bytes are a 32-bit word containing the size of the data holding the function mappings. The next set of data is of the size defined by the previous 4 bytes and contains the information from the target machine's file: /proc/kallsyms TRACE_PRINTK INFORMATION ------------------------ If a developer used trace_printk() within the kernel, it may store the format string outside the ring buffer. This information can be found in: debugfs/tracing/printk_formats The next 4 bytes are a 32-bit word containing the size of the data holding the printk formats. The next set of data is of the size defined by the previous 4 bytes and contains the information from debugfs/tracing/printk_formats. PROCESS INFORMATION ------------------- Directly after the trace_printk formats comes the information mapping a PID to a process name. The next 8 bytes contain a 64-bit word that holds the size of the data mapping the PID to a process name. The next set of data is of the size defined by the previous 8 bytes and contains the information from debugfs/tracing/saved_cmdlines. REST OF TRACE-CMD HEADER ------------------------ Directly after the process information comes the last bit of the trace.dat file header. The next 4 bytes are a 32-bit word defining the number of CPUs that were discovered on the target machine (and has matching trace data for it). The next 10 bytes are one of the following: "options \0" "latency \0" "flyrecord\0" If it is "options \0" then: The next 2 bytes are a 16-bit word defining the current option. If the the value is zero then there are no more options. Otherwise, the next 4 bytes contain a 32-bit word containing the option size. If the reader does not know how to handle the option it can simply skip it. Currently there are no options defined, but this is here to extend the data. The next option will be directly after the previous option, and the options ends with a zero in the option type field. The next 10 bytes after the options are one of the following: "latency \0" "flyrecord\0" which would follow the same as if options were not present. If the value is "latency \0", then the rest of the file is simply ASCII text that was taken from the target's: debugfs/tracing/trace If the value is "flyrecord\0", the following is present: For the number of CPUs that were read earlier, the following is present: 8 bytes that are a 64-bit word containing the offset into the file that holds the data for the CPU. 8 bytes that are a 64-bit word containing the size of the CPU data at that offset. CPU DATA -------- The CPU data is located in the part of the file that is specified in the end of the header. Padding is placed between the header and the CPU data, placing the CPU data at a page aligned (target page) position in the file. This data is copied directly from the Ftrace ring buffer and is of the same format as the ring buffer specified by the event header files loaded in the header format file. The trace-cmd tool will try to \fBmmap(2)\fR the data page by page with the target's page size if possible. If it fails to mmap, it will just read the data instead. SEE ALSO -------- trace-cmd(1), trace-cmd-record(1), trace-cmd-report(1), trace-cmd-start(1), trace-cmd-stop(1), trace-cmd-extract(1), trace-cmd-reset(1), trace-cmd-split(1), trace-cmd-list(1), trace-cmd-listen(1), trace-cmd.dat(5) AUTHOR ------ Written by Steven Rostedt, RESOURCES --------- git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/trace-cmd.git COPYING ------- Copyright \(C) 2010 Red Hat, Inc. Free use of this software is granted under the terms of the GNU Public License (GPL). trace-cmd-2.5.3/Makefile000066400000000000000000000405241246701203100150210ustar00rootroot00000000000000# trace-cmd version TC_VERSION = 2 TC_PATCHLEVEL = 5 TC_EXTRAVERSION = 3 # Kernel Shark version KS_VERSION = 0 KS_PATCHLEVEL = 2 KS_EXTRAVERSION = # file format version FILE_VERSION = 6 MAKEFLAGS += --no-print-directory # Makefiles suck: This macro sets a default value of $(2) for the # variable named by $(1), unless the variable has been set by # environment or command line. This is necessary for CC and AR # because make sets default values, so the simpler ?= approach # won't work as expected. define allow-override $(if $(or $(findstring environment,$(origin $(1))),\ $(findstring command line,$(origin $(1)))),,\ $(eval $(1) = $(2))) endef # Allow setting CC and AR, or setting CROSS_COMPILE as a prefix. $(call allow-override,CC,$(CROSS_COMPILE)gcc) $(call allow-override,AR,$(CROSS_COMPILE)ar) EXT = -std=gnu99 INSTALL = install # Use DESTDIR for installing into a different root directory. # This is useful for building a package. The program will be # installed in this directory as if it was the root directory. # Then the build tool can move it later. DESTDIR ?= DESTDIR_SQ = '$(subst ','\'',$(DESTDIR))' prefix ?= /usr/local bindir_relative = bin bindir = $(prefix)/$(bindir_relative) man_dir = $(prefix)/share/man man_dir_SQ = '$(subst ','\'',$(man_dir))' html_install = $(prefix)/share/kernelshark/html html_install_SQ = '$(subst ','\'',$(html_install))' img_install = $(prefix)/share/kernelshark/html/images img_install_SQ = '$(subst ','\'',$(img_install))' libdir ?= lib export man_dir man_dir_SQ html_install html_install_SQ INSTALL export img_install img_install_SQ export DESTDIR DESTDIR_SQ ifeq ($(prefix),$(HOME)) plugin_dir = $(HOME)/.trace-cmd/plugins python_dir = $(HOME)/.trace-cmd/python else plugin_dir = $(prefix)/$(libdir)/trace-cmd/plugins python_dir = $(prefix)/$(libdir)/trace-cmd/python PLUGIN_DIR = -DPLUGIN_DIR="$(plugin_dir)" PYTHON_DIR = -DPYTHON_DIR="$(python_dir)" PLUGIN_DIR_SQ = '$(subst ','\'',$(PLUGIN_DIR))' PYTHON_DIR_SQ = '$(subst ','\'',$(PYTHON_DIR))' endif HELP_DIR = -DHELP_DIR=$(html_install) HELP_DIR_SQ = '$(subst ','\'',$(HELP_DIR))' # copy a bit from Linux kbuild ifeq ("$(origin V)", "command line") VERBOSE = $(V) endif ifndef VERBOSE VERBOSE = 0 endif ifndef NO_PYTHON PYTHON := ctracecmd.so PYTHON_GUI := ctracecmd.so ctracecmdgui.so PYTHON_VERS ?= python # Can build python? ifeq ($(shell sh -c "pkg-config --cflags $(PYTHON_VERS) > /dev/null 2>&1 && echo y"), y) PYTHON_PLUGINS := plugin_python.so BUILD_PYTHON := $(PYTHON) $(PYTHON_PLUGINS) PYTHON_SO_INSTALL := ctracecmd.install PYTHON_PY_PROGS := event-viewer.install PYTHON_PY_LIBS := tracecmd.install tracecmdgui.install endif endif # NO_PYTHON # $(call test-build, snippet, ret) -> ret if snippet compiles # -> empty otherwise test-build = $(if $(shell sh -c 'echo "$(1)" | \ $(CC) -o /dev/null -c -x c - > /dev/null 2>&1 && echo y'), $2) # have udis86 disassembler library? udis86-flags := $(call test-build,\#include ,-DHAVE_UDIS86 -ludis86) define BLK_TC_FLUSH_SOURCE #include int main(void) { return BLK_TC_FLUSH; } endef # have flush/fua block layer instead of barriers? blk-flags := $(call test-build,$(BLK_TC_FLUSH_SOURCE),-DHAVE_BLK_TC_FLUSH) ifeq ("$(origin O)", "command line") BUILD_OUTPUT := $(O) endif ifeq ($(BUILD_SRC),) ifneq ($(BUILD_OUTPUT),) define build_output $(if $(VERBOSE:1=),@)$(MAKE) -C $(BUILD_OUTPUT) \ BUILD_SRC=$(CURDIR) -f $(CURDIR)/Makefile $1 endef saved-output := $(BUILD_OUTPUT) BUILD_OUTPUT := $(shell cd $(BUILD_OUTPUT) && /bin/pwd) $(if $(BUILD_OUTPUT),, \ $(error output directory "$(saved-output)" does not exist)) all: sub-make gui: force $(call build_output, all_cmd) $(call build_output, BUILDGUI=1 all_gui) $(filter-out gui,$(MAKECMDGOALS)): sub-make sub-make: force $(call build_output, $(MAKECMDGOALS)) # Leave processing to above invocation of make skip-makefile := 1 endif # BUILD_OUTPUT endif # BUILD_SRC # We process the rest of the Makefile if this is the final invocation of make ifeq ($(skip-makefile),) srctree := $(if $(BUILD_SRC),$(BUILD_SRC),$(CURDIR)) objtree := $(CURDIR) src := $(srctree) obj := $(objtree) export prefix bindir src obj # Shell quotes bindir_SQ = $(subst ','\'',$(bindir)) bindir_relative_SQ = $(subst ','\'',$(bindir_relative)) plugin_dir_SQ = $(subst ','\'',$(plugin_dir)) python_dir_SQ = $(subst ','\'',$(python_dir)) LIBS = -L. -ltracecmd -ldl LIB_FILE = libtracecmd.a PACKAGES= gtk+-2.0 libxml-2.0 gthread-2.0 ifndef BUILDGUI BUILDGUI = 0 endif ifeq ($(BUILDGUI), 1) CONFIG_INCLUDES = $(shell pkg-config --cflags $(PACKAGES)) -I$(obj) CONFIG_FLAGS = -DBUILDGUI \ -DGTK_VERSION=$(shell pkg-config --modversion gtk+-2.0 | \ awk 'BEGIN{FS="."}{ a = ($$1 * (2^16)) + $$2 * (2^8) + $$3; printf ("%d", a);}') CONFIG_LIBS = $(shell pkg-config --libs $(PACKAGES)) VERSION = $(KS_VERSION) PATCHLEVEL = $(KS_PATCHLEVEL) EXTRAVERSION = $(KS_EXTRAVERSION) GUI = 'GUI ' GOBJ = $@ GSPACE = REBUILD_GUI = /bin/true G = N = @/bin/true || CONFIG_FLAGS += $(HELP_DIR_SQ) else CONFIG_INCLUDES = CONFIG_LIBS = CONFIG_FLAGS = VERSION = $(TC_VERSION) PATCHLEVEL = $(TC_PATCHLEVEL) EXTRAVERSION = $(TC_EXTRAVERSION) GUI = GSPACE = " " GOBJ = $(GSPACE)$@ REBUILD_GUI = $(MAKE) -f $(src)/Makefile BUILDGUI=1 $@ G = $(REBUILD_GUI); /bin/true || N = endif export Q VERBOSE TRACECMD_VERSION = $(TC_VERSION).$(TC_PATCHLEVEL).$(TC_EXTRAVERSION) KERNELSHARK_VERSION = $(KS_VERSION).$(KS_PATCHLEVEL).$(KS_EXTRAVERSION) INCLUDES = -I. -I $(srctree)/../../include $(CONFIG_INCLUDES) include $(src)/features.mk # Set compile option CFLAGS if not set elsewhere CFLAGS ?= -g -Wall CPPFLAGS ?= LDFLAGS ?= # Required CFLAGS override CFLAGS += -D_GNU_SOURCE ifndef NO_PTRACE ifneq ($(call try-cc,$(SOURCE_PTRACE),),y) NO_PTRACE = 1 CFLAGS += -DWARN_NO_PTRACE endif endif ifdef NO_PTRACE CFLAGS += -DNO_PTRACE endif # Append required CFLAGS override CFLAGS += $(CONFIG_FLAGS) $(INCLUDES) $(PLUGIN_DIR_SQ) override CFLAGS += $(udis86-flags) $(blk-flags) ifeq ($(VERBOSE),1) Q = print_compile = print_app_build = print_fpic_compile = print_shared_lib_compile = print_plugin_obj_compile = print_plugin_build = print_install = else Q = @ print_compile = echo ' $(GUI)COMPILE '$(GOBJ); print_app_build = echo ' $(GUI)BUILD '$(GOBJ); print_fpic_compile = echo ' $(GUI)COMPILE FPIC '$(GOBJ); print_shared_lib_compile = echo ' $(GUI)COMPILE SHARED LIB '$(GOBJ); print_plugin_obj_compile = echo ' $(GUI)COMPILE PLUGIN OBJ '$(GOBJ); print_plugin_build = echo ' $(GUI)BUILD PLUGIN '$(GOBJ); print_static_lib_build = echo ' $(GUI)BUILD STATIC LIB '$(GOBJ); print_install = echo ' $(GUI)INSTALL '$(GSPACE)$1' to $(DESTDIR_SQ)$2'; endif do_fpic_compile = \ ($(print_fpic_compile) \ $(CC) -c $(CPPFLAGS) $(CFLAGS) $(EXT) -fPIC $< -o $@) do_app_build = \ ($(print_app_build) \ $(CC) $^ -rdynamic -o $@ $(LDFLAGS) $(CONFIG_LIBS) $(LIBS)) do_compile_shared_library = \ ($(print_shared_lib_compile) \ $(CC) --shared $^ -o $@) do_compile_plugin_obj = \ ($(print_plugin_obj_compile) \ $(CC) -c $(CPPFLAGS) $(CFLAGS) -fPIC -o $@ $<) do_plugin_build = \ ($(print_plugin_build) \ $(CC) $(CFLAGS) $(LDFLAGS) -shared -nostartfiles -o $@ $<) do_build_static_lib = \ ($(print_static_lib_build) \ $(RM) $@; $(AR) rcs $@ $^) define check_gui if [ $(BUILDGUI) -ne 1 -a ! -z "$(filter $(gui_objs),$(@))" ]; then \ $(REBUILD_GUI); \ else \ $(print_compile) \ $(CC) -c $(CPPFLAGS) $(CFLAGS) $(EXT) $< -o $(obj)/$@; \ fi; endef $(obj)/%.o: $(src)/%.c $(Q)$(call check_gui) %.o: $(src)/%.c $(Q)$(call check_gui) TRACE_GUI_OBJS = trace-filter.o trace-compat.o trace-filter-hash.o trace-dialog.o \ trace-xml.o TRACE_CMD_OBJS = trace-cmd.o trace-record.o trace-read.o trace-split.o trace-listen.o \ trace-stack.o trace-hist.o trace-mem.o trace-snapshot.o trace-stat.o \ trace-hash.o trace-profile.o trace-stream.o TRACE_VIEW_OBJS = trace-view.o trace-view-store.o TRACE_GRAPH_OBJS = trace-graph.o trace-plot.o trace-plot-cpu.o trace-plot-task.o TRACE_VIEW_MAIN_OBJS = trace-view-main.o $(TRACE_VIEW_OBJS) $(TRACE_GUI_OBJS) TRACE_GRAPH_MAIN_OBJS = trace-graph-main.o $(TRACE_GRAPH_OBJS) $(TRACE_GUI_OBJS) KERNEL_SHARK_OBJS = $(TRACE_VIEW_OBJS) $(TRACE_GRAPH_OBJS) $(TRACE_GUI_OBJS) \ trace-capture.o kernel-shark.o PEVENT_LIB_OBJS = event-parse.o trace-seq.o parse-filter.o parse-utils.o TCMD_LIB_OBJS = $(PEVENT_LIB_OBJS) trace-util.o trace-input.o trace-ftrace.o \ trace-output.o trace-record.o trace-recorder.o \ trace-restore.o trace-usage.o trace-blk-hack.o \ kbuffer-parse.o event-plugin.o trace-hooks.o PLUGIN_OBJS = PLUGIN_OBJS += plugin_jbd2.o PLUGIN_OBJS += plugin_hrtimer.o PLUGIN_OBJS += plugin_kmem.o PLUGIN_OBJS += plugin_kvm.o PLUGIN_OBJS += plugin_mac80211.o PLUGIN_OBJS += plugin_sched_switch.o PLUGIN_OBJS += plugin_function.o PLUGIN_OBJS += plugin_xen.o PLUGIN_OBJS += plugin_scsi.o PLUGIN_OBJS += plugin_cfg80211.o PLUGIN_OBJS += plugin_blk.o PLUGINS := $(PLUGIN_OBJS:.o=.so) ALL_OBJS = $(TRACE_CMD_OBJS) $(KERNEL_SHARK_OBJS) $(TRACE_VIEW_MAIN_OBJS) \ $(TRACE_GRAPH_MAIN_OBJS) $(TCMD_LIB_OBJS) $(PLUGIN_OBJS) CMD_TARGETS = trace_plugin_dir trace_python_dir tc_version.h libparsevent.a $(LIB_FILE) \ trace-cmd $(PLUGINS) $(BUILD_PYTHON) GUI_TARGETS = ks_version.h trace-graph trace-view kernelshark TARGETS = $(CMD_TARGETS) $(GUI_TARGETS) # cpp $(INCLUDES) ### # Default we just build trace-cmd # # If you want kernelshark, then do: make gui ### all: all_cmd show_gui_make all_cmd: $(CMD_TARGETS) gui: $(CMD_TARGETS) $(Q)$(MAKE) -f $(src)/Makefile BUILDGUI=1 all_gui all_gui: $(GUI_TARGETS) show_gui_done GUI_OBJS = $(KERNEL_SHARK_OBJS) $(TRACE_VIEW_MAIN_OBJS) $(TRACE_GRAPH_MAIN_OBJS) gui_objs := $(sort $(GUI_OBJS)) trace-cmd: $(TRACE_CMD_OBJS) $(Q)$(do_app_build) kernelshark: $(KERNEL_SHARK_OBJS) $(Q)$(G)$(do_app_build) trace-view: $(TRACE_VIEW_MAIN_OBJS) $(Q)$(G)$(do_app_build) trace-graph: $(TRACE_GRAPH_MAIN_OBJS) $(Q)$(G)$(do_app_build) trace-cmd: libtracecmd.a kernelshark: libtracecmd.a trace-view: libtracecmd.a trace-graph: libtracecmd.a libparsevent.so: $(PEVENT_LIB_OBJS) $(Q)$(do_compile_shared_library) libparsevent.a: $(PEVENT_LIB_OBJS) $(Q)$(do_build_static_lib) $(TCMD_LIB_OBJS): %.o: $(src)/%.c $(Q)$(do_fpic_compile) libtracecmd.so: $(TCMD_LIB_OBJS) $(Q)$(do_compile_shared_library) libtracecmd.a: $(TCMD_LIB_OBJS) $(Q)$(do_build_static_lib) trace-util.o: trace_plugin_dir $(PLUGIN_OBJS): %.o : $(src)/%.c $(Q)$(do_compile_plugin_obj) $(PLUGINS): %.so: %.o $(Q)$(do_plugin_build) define make_version.h (echo '/* This file is automatically generated. Do not modify. */'; \ echo \#define VERSION_CODE $(shell \ expr $(VERSION) \* 256 + $(PATCHLEVEL)); \ echo '#define EXTRAVERSION ' $(EXTRAVERSION); \ echo '#define VERSION_STRING "'$(VERSION).$(PATCHLEVEL).$(EXTRAVERSION)'"'; \ echo '#define FILE_VERSION '$(FILE_VERSION); \ ) > $1 endef define update_version.h ($(call make_version.h, $@.tmp); \ if [ -r $@ ] && cmp -s $@ $@.tmp; then \ rm -f $@.tmp; \ else \ echo ' UPDATE $@'; \ mv -f $@.tmp $@; \ fi); endef ks_version.h: force $(Q)$(G)$(call update_version.h) tc_version.h: force $(Q)$(N)$(call update_version.h) define update_dir (echo $1 > $@.tmp; \ if [ -r $@ ] && cmp -s $@ $@.tmp; then \ rm -f $@.tmp; \ else \ echo ' UPDATE $@'; \ mv -f $@.tmp $@; \ fi); endef trace_plugin_dir: force $(Q)$(N)$(call update_dir, 'PLUGIN_DIR=$(PLUGIN_DIR)') trace_python_dir: force $(Q)$(N)$(call update_dir, 'PYTHON_DIR=$(PYTHON_DIR)') ## make deps all_objs := $(sort $(ALL_OBJS)) all_deps := $(all_objs:%.o=.%.d) gui_deps := $(gui_objs:%.o=.%.d) non_gui_deps = $(filter-out $(gui_deps),$(all_deps)) define check_gui_deps if [ ! -z "$(filter $(gui_deps),$(@))" ]; then \ if [ $(BUILDGUI) -ne 1 ]; then \ $(REBUILD_GUI); \ else \ $(CC) -M $(CPPFLAGS) $(CFLAGS) $< > $@; \ fi \ elif [ $(BUILDGUI) -eq 0 ]; then \ $(CC) -M $(CPPFLAGS) $(CFLAGS) $< > $@; \ else \ echo SKIPPING $@; \ fi; endef $(gui_deps): ks_version.h $(non_gui_deps): tc_version.h $(all_deps): .%.d: $(src)/%.c $(Q)$(call check_gui_deps) $(all_objs) : %.o : .%.d ifeq ($(BUILDGUI), 1) dep_includes := $(wildcard $(gui_deps)) else dep_includes := $(wildcard $(non_gui_deps)) endif ifneq ($(dep_includes),) include $(dep_includes) endif show_gui_make: @echo "Note: to build the gui, type \"make gui\"" @echo " to build man pages, type \"make doc\"" show_gui_done: @echo "gui build complete" PHONY += show_gui_make tags: force $(RM) tags find . -name '*.[ch]' | xargs ctags --extra=+f --c-kinds=+px TAGS: force $(RM) TAGS find . -name '*.[ch]' | xargs etags cscope: force $(RM) cscope* find . -name '*.[ch]' | cscope -b -q PLUGINS_INSTALL = $(subst .so,.install,$(PLUGINS)) $(subst .so,.install,$(PYTHON_PLUGINS)) define do_install $(print_install) \ if [ ! -d '$(DESTDIR_SQ)$2' ]; then \ $(INSTALL) -d -m 755 '$(DESTDIR_SQ)$2'; \ fi; \ $(INSTALL) $1 '$(DESTDIR_SQ)$2' endef define do_install_data $(print_install) \ if [ ! -d '$(DESTDIR_SQ)$2' ]; then \ $(INSTALL) -d -m 755 '$(DESTDIR_SQ)$2'; \ fi; \ $(INSTALL) -m 644 $1 '$(DESTDIR_SQ)$2' endef $(PLUGINS_INSTALL): %.install : %.so force $(Q)$(call do_install_data,$<,$(plugin_dir_SQ)) install_plugins: $(PLUGINS_INSTALL) $(PYTHON_SO_INSTALL): %.install : %.so force $(Q)$(call do_install_data,$<,$(python_dir_SQ)) $(PYTHON_PY_PROGS): %.install : %.py force $(Q)$(call do_install,$<,$(python_dir_SQ)) $(PYTHON_PY_LIBS): %.install : %.py force $(Q)$(call do_install_data,$<,$(python_dir_SQ)) $(PYTHON_PY_PLUGINS): %.install : %.py force $(Q)$(call do_install_data,$<,$(plugin_dir_SQ)) install_python: $(PYTHON_SO_INSTALL) $(PYTHON_PY_PROGS) $(PYTHON_PY_LIBS) $(PYTHON_PY_PLUGINS) install_cmd: all_cmd install_plugins install_python $(Q)$(call do_install,trace-cmd,$(bindir_SQ)) install: install_cmd @echo "Note: to install the gui, type \"make install_gui\"" @echo " to install man pages, type \"make install_doc\"" install_gui: install_cmd gui $(Q)$(call do_install,trace-view,$(bindir_SQ)) $(Q)$(call do_install,trace-graph,$(bindir_SQ)) $(Q)$(call do_install,kernelshark,$(bindir_SQ)) doc: $(MAKE) -C $(src)/Documentation all doc_clean: $(MAKE) -C $(src)/Documentation clean install_doc: $(MAKE) -C $(src)/Documentation install clean: $(RM) *.o *~ $(TARGETS) *.a *.so ctracecmd_wrap.c .*.d $(RM) tags TAGS cscope* ##### PYTHON STUFF ##### PYTHON_INCLUDES = `pkg-config --cflags $(PYTHON_VERS)` PYTHON_LDFLAGS = `pkg-config --libs $(PYTHON_VERS)` \ $(shell python2 -c "import distutils.sysconfig; print distutils.sysconfig.get_config_var('LINKFORSHARED')") PYGTK_CFLAGS = `pkg-config --cflags pygtk-2.0` ctracecmd.so: $(TCMD_LIB_OBJS) ctracecmd.i swig -Wall -python -noproxy ctracecmd.i $(CC) -fpic -c $(CPPFLAGS) $(CFLAGS) $(PYTHON_INCLUDES) ctracecmd_wrap.c $(CC) --shared $(TCMD_LIB_OBJS) $(LDFLAGS) ctracecmd_wrap.o -o ctracecmd.so ctracecmdgui.so: $(TRACE_VIEW_OBJS) $(LIB_FILE) swig -Wall -python -noproxy ctracecmdgui.i $(CC) -fpic -c $(CPPFLAGS) $(CFLAGS) $(INCLUDES) $(PYTHON_INCLUDES) $(PYGTK_CFLAGS) ctracecmdgui_wrap.c $(CC) --shared $^ $(LDFLAGS) $(LIBS) $(CONFIG_LIBS) ctracecmdgui_wrap.o -o ctracecmdgui.so PHONY += python python: $(PYTHON) PHONY += python-gui python-gui: $(PYTHON_GUI) PHONY += python-plugin python-plugin: $(PYTHON_PLUGINS) CFLAGS_plugin_python.o += $(PYTHON_DIR_SQ) do_compile_python_plugin_obj = \ ($(print_plugin_obj_compile) \ $(CC) -c $(CPPFLAGS) $(CFLAGS) $(CFLAGS_$@) $(PYTHON_INCLUDES) -fPIC -o $@ $<) do_python_plugin_build = \ ($(print_plugin_build) \ $(CC) $< -shared $(LDFLAGS) $(PYTHON_LDFLAGS) -o $@) plugin_python.o: %.o : $(src)/%.c trace_python_dir $(Q)$(do_compile_python_plugin_obj) plugin_python.so: %.so: %.o $(Q)$(do_python_plugin_build) endif # skip-makefile dist: git archive --format=tar --prefix=trace-cmd-$(TRACECMD_VERSION)/ HEAD \ > ../trace-cmd-$(TRACECMD_VERSION).tar cat ../trace-cmd-$(TRACECMD_VERSION).tar | \ bzip2 -c9 > ../trace-cmd-$(TRACECMD_VERSION).tar.bz2 cat ../trace-cmd-$(TRACECMD_VERSION).tar | \ xz -e -c8 > ../trace-cmd-$(TRACECMD_VERSION).tar.xz PHONY += force force: # Declare the contents of the .PHONY variable as phony. We keep that # information in a variable so we can use it in if_changed and friends. .PHONY: $(PHONY) trace-cmd-2.5.3/README000066400000000000000000000016131246701203100142350ustar00rootroot00000000000000These files make up the code that create the trace-cmd programs. This includes the GUI interface application kernelshark as well as trace-graph and trace-view. These files also make up the code to create the libraries libtracecmd and libparsevent The applications are licensed under the GNU General Public License 2.0 (see COPYING) and the libraries are licensed under the GNU Lesser General Public License 2.1 (See COPYING.LIB). BUILDING: To make trace-cmd make To make the gui make gui INSTALL: To install trace-cmd make install To install the gui make install_gui Note: The default install is relative to /usr/local The default install directory is /usr/local/bin The default plugin directory is /usr/local/lib/trace-cmd/plugins To change the default, you can set 'prefix', eg mkdir $HOME/test-trace make prefix=$HOME/test-trace make prefix=$HOME/test-trace install trace-cmd-2.5.3/bug.h000066400000000000000000000004511246701203100143020ustar00rootroot00000000000000#ifndef __TRACE_CMD_BUG #define __TRACE_CMD_BUG #define unlikely(cond) __builtin_expect(!!(cond), 0) #define WARN_ONCE(cond, fmt, ...) \ ({ \ int __c__ = cond; \ if (unlikely(__c__)) { \ warning(fmt, ##__VA_ARGS__); \ } \ __c__; \ }) #endif /* __TRACE_CMD_BUG */ trace-cmd-2.5.3/cpu.h000066400000000000000000000046701246701203100143230ustar00rootroot00000000000000/* * Copyright (C) 2009 Red Hat Inc, Steven Rostedt * * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; version 2 of the License (not later!) * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; if not, see * * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ */ #ifndef _CPU_H #define _CPU_H static inline int cpu_isset(guint64 *cpu_mask, gint cpu) { guint64 mask; mask = *(cpu_mask + (cpu >> 6)); return mask & (1ULL << (cpu & ((1ULL << 6) - 1))); } static inline gboolean cpu_allset(guint64 *cpu_mask, gint max_cpus) { gint cpu; for (cpu = 0; cpu < max_cpus; cpu++) { if (!cpu_isset(cpu_mask, cpu)) return FALSE; } return TRUE; } static inline void cpu_set(guint64 *cpu_mask, gint cpu) { guint64 *mask; mask = cpu_mask + (cpu >> 6); *mask |= (1ULL << (cpu & ((1ULL << 6) - 1))); } static inline void cpu_clear(guint64 *cpu_mask, gint cpu) { guint64 *mask; mask = cpu_mask + (cpu >> 6); *mask &= ~(1ULL << (cpu & ((1ULL << 6) - 1))); } static inline void set_cpus(guint64 *cpu_mask, gint cpus) { gint idx; for (idx = 0; idx < (cpus >> 6); idx++) { *(cpu_mask + idx) = -1ULL; } *(cpu_mask) = (1ULL << (cpus & ((1ULL << 6) - 1))) - 1; } static inline gboolean cpus_equal(guint64 *a_mask, guint64 *b_mask, gint cpus) { gint idx; for (idx = 0; idx < (cpus >> 6) + 1; idx++) { if (*(a_mask + idx) != *(b_mask + idx)) return FALSE; } return TRUE; } /* Hamming weight */ static inline guint hweight(guint mask) { guint64 w = mask; w -= (w >> 1) & 0x5555555555555555ul; w = (w & 0x3333333333333333ul) + ((w >> 2) & 0x3333333333333333ul); w = (w + (w >> 4)) & 0x0f0f0f0f0f0f0f0ful; return (w * 0x0101010101010101ul) >> 56; } static inline guint cpu_weight(guint64 *cpu_mask, guint cpus) { guint weight = 0; gint idx; for (idx = 0; idx < (cpus >> 6) + 1; idx++) weight += hweight(*(cpu_mask + idx)); return weight; } #endif /* _CPU_H */ trace-cmd-2.5.3/ctracecmd.i000066400000000000000000000074711246701203100154640ustar00rootroot00000000000000// tracecmd.i %module ctracecmd %include "typemaps.i" %include "constraints.i" %nodefaultctor record; %nodefaultdtor record; %apply Pointer NONNULL { struct tracecmd_input *handle }; %apply Pointer NONNULL { struct pevent *pevent }; %apply Pointer NONNULL { struct format_field * }; %apply unsigned long long *OUTPUT {unsigned long long *} %apply int *OUTPUT {int *} %{ #include "trace-cmd.h" %} %typemap(in) PyObject *pyfunc { if (!PyCallable_Check($input)) { PyErr_SetString(PyExc_TypeError, "Need a callable object!"); return NULL; } $1 = $input; } %ignore python_callback; %inline %{ static int python_callback(struct trace_seq *s, struct pevent_record *record, struct event_format *event, void *context); PyObject *convert_pevent(unsigned long pevent) { void *pev = (void *)pevent; return SWIG_NewPointerObj(SWIG_as_voidptr(pev), SWIGTYPE_p_pevent, 0); } void py_pevent_register_event_handler(struct pevent *pevent, int id, char *subsys, char *evname, PyObject *pyfunc) { Py_INCREF(pyfunc); pevent_register_event_handler(pevent, id, subsys, evname, python_callback, pyfunc); } static PyObject *py_field_get_data(struct format_field *f, struct pevent_record *r) { if (!strncmp(f->type, "__data_loc ", 11)) { unsigned long long val; int len, offset; if (pevent_read_number_field(f, r->data, &val)) { PyErr_SetString(PyExc_TypeError, "Field is not a valid number"); return NULL; } /* * The actual length of the dynamic array is stored * in the top half of the field, and the offset * is in the bottom half of the 32 bit field. */ offset = val & 0xffff; len = val >> 16; return PyBuffer_FromMemory((char *)r->data + offset, len); } return PyBuffer_FromMemory((char *)r->data + f->offset, f->size); } static PyObject *py_field_get_str(struct format_field *f, struct pevent_record *r) { if (!strncmp(f->type, "__data_loc ", 11)) { unsigned long long val; int offset; if (pevent_read_number_field(f, r->data, &val)) { PyErr_SetString(PyExc_TypeError, "Field is not a valid number"); return NULL; } /* * The actual length of the dynamic array is stored * in the top half of the field, and the offset * is in the bottom half of the 32 bit field. */ offset = val & 0xffff; return PyString_FromString((char *)r->data + offset); } return PyString_FromStringAndSize((char *)r->data + f->offset, strnlen((char *)r->data + f->offset, f->size)); } static PyObject *py_format_get_keys(struct event_format *ef) { PyObject *list; struct format_field *f; list = PyList_New(0); for (f = ef->format.fields; f; f = f->next) { if (PyList_Append(list, PyString_FromString(f->name))) { Py_DECREF(list); return NULL; } } return list; } %} %wrapper %{ static int python_callback(struct trace_seq *s, struct pevent_record *record, struct event_format *event, void *context) { PyObject *arglist, *result; int r = 0; record->ref_count++; arglist = Py_BuildValue("(OOO)", SWIG_NewPointerObj(SWIG_as_voidptr(s), SWIGTYPE_p_trace_seq, 0), SWIG_NewPointerObj(SWIG_as_voidptr(record), SWIGTYPE_p_pevent_record, 0), SWIG_NewPointerObj(SWIG_as_voidptr(event), SWIGTYPE_p_event_format, 0)); result = PyEval_CallObject(context, arglist); Py_XDECREF(arglist); if (result && result != Py_None) { if (!PyInt_Check(result)) { PyErr_SetString(PyExc_TypeError, "callback must return int"); PyErr_Print(); Py_XDECREF(result); return 0; } r = PyInt_AS_LONG(result); } else if (result == Py_None) r = 0; else PyErr_Print(); Py_XDECREF(result); return r; } %} %ignore trace_seq_vprintf; %ignore vpr_stat; /* SWIG can't grok these, define them to nothing */ #define __trace #define __attribute__(x) #define __thread %include "trace-cmd.h" %include "event-parse.h" trace-cmd-2.5.3/ctracecmdgui.i000066400000000000000000000030351246701203100161610ustar00rootroot00000000000000// ctracecmdgui.i %module ctracecmdgui %include typemaps.i %{ #include "trace-view-store.h" #include #include #include extern GtkTreeModel *trace_view_store_as_gtk_tree_model(struct trace_view_store *store); PyObject * pytype_from_gtype(GType gtype) { PyTypeObject *pt = NULL; switch (gtype) { case G_TYPE_INT: case G_TYPE_UINT: pt = &PyLong_Type; break; case G_TYPE_STRING: pt = &PyUnicode_Type; break; default: return Py_None; } return (PyObject *)pt; } %} /* return python longs from unsigned long long functions */ %typemap(out) unsigned long long { $result = PyLong_FromUnsignedLongLong((unsigned long long) $1); } /* help swig cope with g* types */ %typemap(in) gint { $1 = PyInt_AsLong($input); } %typemap(out) gint { $result = PyInt_FromLong($1); } %typemap(in) guint { $1 = PyLong_AsUnsignedLong($input); } %typemap(out) guint { $result = PyLong_FromUnsignedLong($1); } %typemap(in) guint64 { $1 = PyLong_AsUnsignedLongLong($input); } %typemap(out) guint64 { $result = PyLong_FromUnsignedLongLong($1); } %typemap(out) GType { $result = pytype_from_gtype($1); } %typemap(out) GtkTreeModelFlags { $result = PyLong_FromLong($1); } %inline %{ GtkTreeModel *trace_view_store_as_gtk_tree_model(struct trace_view_store *store) { return GTK_TREE_MODEL(store); } %} /* SWIG can't grok these, define them to nothing */ #define __trace #define __attribute__(x) #define __thread %include "trace-view-store.h" trace-cmd-2.5.3/event-parse.c000066400000000000000000004226021246701203100157570ustar00rootroot00000000000000/* * Copyright (C) 2009, 2010 Red Hat Inc, Steven Rostedt * * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ * This program is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; * version 2.1 of the License (not later!) * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this program; if not, see * * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ * * The parts for function graph printing was taken and modified from the * Linux Kernel that were written by * - Copyright (C) 2009 Frederic Weisbecker, * Frederic Weisbecker gave his permission to relicense the code to * the Lesser General Public License. */ #include #include #include #include #include #include #include #include #include #include "event-parse.h" #include "event-utils.h" static const char *input_buf; static unsigned long long input_buf_ptr; static unsigned long long input_buf_siz; static int is_flag_field; static int is_symbolic_field; static int show_warning = 1; #define do_warning(fmt, ...) \ do { \ if (show_warning) \ warning(fmt, ##__VA_ARGS__); \ } while (0) #define do_warning_event(event, fmt, ...) \ do { \ if (!show_warning) \ continue; \ \ if (event) \ warning("[%s:%s] " fmt, event->system, \ event->name, ##__VA_ARGS__); \ else \ warning(fmt, ##__VA_ARGS__); \ } while (0) static void init_input_buf(const char *buf, unsigned long long size) { input_buf = buf; input_buf_siz = size; input_buf_ptr = 0; } const char *pevent_get_input_buf(void) { return input_buf; } unsigned long long pevent_get_input_buf_ptr(void) { return input_buf_ptr; } struct event_handler { struct event_handler *next; int id; const char *sys_name; const char *event_name; pevent_event_handler_func func; void *context; }; struct pevent_func_params { struct pevent_func_params *next; enum pevent_func_arg_type type; }; struct pevent_function_handler { struct pevent_function_handler *next; enum pevent_func_arg_type ret_type; char *name; pevent_func_handler func; struct pevent_func_params *params; int nr_args; }; static unsigned long long process_defined_func(struct trace_seq *s, void *data, int size, struct event_format *event, struct print_arg *arg); static void free_func_handle(struct pevent_function_handler *func); /** * pevent_buffer_init - init buffer for parsing * @buf: buffer to parse * @size: the size of the buffer * * For use with pevent_read_token(), this initializes the internal * buffer that pevent_read_token() will parse. */ void pevent_buffer_init(const char *buf, unsigned long long size) { init_input_buf(buf, size); } void breakpoint(void) { static int x; x++; } struct print_arg *alloc_arg(void) { return calloc(1, sizeof(struct print_arg)); } struct cmdline { char *comm; int pid; }; static int cmdline_cmp(const void *a, const void *b) { const struct cmdline *ca = a; const struct cmdline *cb = b; if (ca->pid < cb->pid) return -1; if (ca->pid > cb->pid) return 1; return 0; } struct cmdline_list { struct cmdline_list *next; char *comm; int pid; }; static int cmdline_init(struct pevent *pevent) { struct cmdline_list *cmdlist = pevent->cmdlist; struct cmdline_list *item; struct cmdline *cmdlines; int i; cmdlines = malloc(sizeof(*cmdlines) * pevent->cmdline_count); if (!cmdlines) return -1; i = 0; while (cmdlist) { cmdlines[i].pid = cmdlist->pid; cmdlines[i].comm = cmdlist->comm; i++; item = cmdlist; cmdlist = cmdlist->next; free(item); } qsort(cmdlines, pevent->cmdline_count, sizeof(*cmdlines), cmdline_cmp); pevent->cmdlines = cmdlines; pevent->cmdlist = NULL; return 0; } static const char *find_cmdline(struct pevent *pevent, int pid) { const struct cmdline *comm; struct cmdline key; if (!pid) return ""; if (!pevent->cmdlines && cmdline_init(pevent)) return ""; key.pid = pid; comm = bsearch(&key, pevent->cmdlines, pevent->cmdline_count, sizeof(*pevent->cmdlines), cmdline_cmp); if (comm) return comm->comm; return "<...>"; } /** * pevent_pid_is_registered - return if a pid has a cmdline registered * @pevent: handle for the pevent * @pid: The pid to check if it has a cmdline registered with. * * Returns 1 if the pid has a cmdline mapped to it * 0 otherwise. */ int pevent_pid_is_registered(struct pevent *pevent, int pid) { const struct cmdline *comm; struct cmdline key; if (!pid) return 1; if (!pevent->cmdlines && cmdline_init(pevent)) return 0; key.pid = pid; comm = bsearch(&key, pevent->cmdlines, pevent->cmdline_count, sizeof(*pevent->cmdlines), cmdline_cmp); if (comm) return 1; return 0; } /* * If the command lines have been converted to an array, then * we must add this pid. This is much slower than when cmdlines * are added before the array is initialized. */ static int add_new_comm(struct pevent *pevent, const char *comm, int pid) { struct cmdline *cmdlines = pevent->cmdlines; const struct cmdline *cmdline; struct cmdline key; if (!pid) return 0; /* avoid duplicates */ key.pid = pid; cmdline = bsearch(&key, pevent->cmdlines, pevent->cmdline_count, sizeof(*pevent->cmdlines), cmdline_cmp); if (cmdline) { errno = EEXIST; return -1; } cmdlines = realloc(cmdlines, sizeof(*cmdlines) * (pevent->cmdline_count + 1)); if (!cmdlines) { errno = ENOMEM; return -1; } cmdlines[pevent->cmdline_count].comm = strdup(comm); if (!cmdlines[pevent->cmdline_count].comm) { free(cmdlines); errno = ENOMEM; return -1; } cmdlines[pevent->cmdline_count].pid = pid; if (cmdlines[pevent->cmdline_count].comm) pevent->cmdline_count++; qsort(cmdlines, pevent->cmdline_count, sizeof(*cmdlines), cmdline_cmp); pevent->cmdlines = cmdlines; return 0; } /** * pevent_register_comm - register a pid / comm mapping * @pevent: handle for the pevent * @comm: the command line to register * @pid: the pid to map the command line to * * This adds a mapping to search for command line names with * a given pid. The comm is duplicated. */ int pevent_register_comm(struct pevent *pevent, const char *comm, int pid) { struct cmdline_list *item; if (pevent->cmdlines) return add_new_comm(pevent, comm, pid); item = malloc(sizeof(*item)); if (!item) return -1; if (comm) item->comm = strdup(comm); else item->comm = strdup("<...>"); if (!item->comm) { free(item); return -1; } item->pid = pid; item->next = pevent->cmdlist; pevent->cmdlist = item; pevent->cmdline_count++; return 0; } int pevent_register_trace_clock(struct pevent *pevent, const char *trace_clock) { pevent->trace_clock = strdup(trace_clock); if (!pevent->trace_clock) { errno = ENOMEM; return -1; } return 0; } struct func_map { unsigned long long addr; char *func; char *mod; }; struct func_list { struct func_list *next; unsigned long long addr; char *func; char *mod; }; static int func_cmp(const void *a, const void *b) { const struct func_map *fa = a; const struct func_map *fb = b; if (fa->addr < fb->addr) return -1; if (fa->addr > fb->addr) return 1; return 0; } /* * We are searching for a record in between, not an exact * match. */ static int func_bcmp(const void *a, const void *b) { const struct func_map *fa = a; const struct func_map *fb = b; if ((fa->addr == fb->addr) || (fa->addr > fb->addr && fa->addr < (fb+1)->addr)) return 0; if (fa->addr < fb->addr) return -1; return 1; } static int func_map_init(struct pevent *pevent) { struct func_list *funclist; struct func_list *item; struct func_map *func_map; int i; func_map = malloc(sizeof(*func_map) * (pevent->func_count + 1)); if (!func_map) return -1; funclist = pevent->funclist; i = 0; while (funclist) { func_map[i].func = funclist->func; func_map[i].addr = funclist->addr; func_map[i].mod = funclist->mod; i++; item = funclist; funclist = funclist->next; free(item); } qsort(func_map, pevent->func_count, sizeof(*func_map), func_cmp); /* * Add a special record at the end. */ func_map[pevent->func_count].func = NULL; func_map[pevent->func_count].addr = 0; func_map[pevent->func_count].mod = NULL; pevent->func_map = func_map; pevent->funclist = NULL; return 0; } static struct func_map * find_func(struct pevent *pevent, unsigned long long addr) { struct func_map *func; struct func_map key; if (!pevent->func_map) func_map_init(pevent); key.addr = addr; func = bsearch(&key, pevent->func_map, pevent->func_count, sizeof(*pevent->func_map), func_bcmp); return func; } /** * pevent_find_function - find a function by a given address * @pevent: handle for the pevent * @addr: the address to find the function with * * Returns a pointer to the function stored that has the given * address. Note, the address does not have to be exact, it * will select the function that would contain the address. */ const char *pevent_find_function(struct pevent *pevent, unsigned long long addr) { struct func_map *map; map = find_func(pevent, addr); if (!map) return NULL; return map->func; } /** * pevent_find_function_address - find a function address by a given address * @pevent: handle for the pevent * @addr: the address to find the function with * * Returns the address the function starts at. This can be used in * conjunction with pevent_find_function to print both the function * name and the function offset. */ unsigned long long pevent_find_function_address(struct pevent *pevent, unsigned long long addr) { struct func_map *map; map = find_func(pevent, addr); if (!map) return 0; return map->addr; } /** * pevent_register_function - register a function with a given address * @pevent: handle for the pevent * @function: the function name to register * @addr: the address the function starts at * @mod: the kernel module the function may be in (NULL for none) * * This registers a function name with an address and module. * The @func passed in is duplicated. */ int pevent_register_function(struct pevent *pevent, char *func, unsigned long long addr, char *mod) { struct func_list *item = malloc(sizeof(*item)); if (!item) return -1; item->next = pevent->funclist; item->func = strdup(func); if (!item->func) goto out_free; if (mod) { item->mod = strdup(mod); if (!item->mod) goto out_free_func; } else item->mod = NULL; item->addr = addr; pevent->funclist = item; pevent->func_count++; return 0; out_free_func: free(item->func); item->func = NULL; out_free: free(item); errno = ENOMEM; return -1; } /** * pevent_print_funcs - print out the stored functions * @pevent: handle for the pevent * * This prints out the stored functions. */ void pevent_print_funcs(struct pevent *pevent) { int i; if (!pevent->func_map) func_map_init(pevent); for (i = 0; i < (int)pevent->func_count; i++) { printf("%016llx %s", pevent->func_map[i].addr, pevent->func_map[i].func); if (pevent->func_map[i].mod) printf(" [%s]\n", pevent->func_map[i].mod); else printf("\n"); } } struct printk_map { unsigned long long addr; char *printk; }; struct printk_list { struct printk_list *next; unsigned long long addr; char *printk; }; static int printk_cmp(const void *a, const void *b) { const struct printk_map *pa = a; const struct printk_map *pb = b; if (pa->addr < pb->addr) return -1; if (pa->addr > pb->addr) return 1; return 0; } static int printk_map_init(struct pevent *pevent) { struct printk_list *printklist; struct printk_list *item; struct printk_map *printk_map; int i; printk_map = malloc(sizeof(*printk_map) * (pevent->printk_count + 1)); if (!printk_map) return -1; printklist = pevent->printklist; i = 0; while (printklist) { printk_map[i].printk = printklist->printk; printk_map[i].addr = printklist->addr; i++; item = printklist; printklist = printklist->next; free(item); } qsort(printk_map, pevent->printk_count, sizeof(*printk_map), printk_cmp); pevent->printk_map = printk_map; pevent->printklist = NULL; return 0; } static struct printk_map * find_printk(struct pevent *pevent, unsigned long long addr) { struct printk_map *printk; struct printk_map key; if (!pevent->printk_map && printk_map_init(pevent)) return NULL; key.addr = addr; printk = bsearch(&key, pevent->printk_map, pevent->printk_count, sizeof(*pevent->printk_map), printk_cmp); return printk; } /** * pevent_register_print_string - register a string by its address * @pevent: handle for the pevent * @fmt: the string format to register * @addr: the address the string was located at * * This registers a string by the address it was stored in the kernel. * The @fmt passed in is duplicated. */ int pevent_register_print_string(struct pevent *pevent, const char *fmt, unsigned long long addr) { struct printk_list *item = malloc(sizeof(*item)); char *p; if (!item) return -1; item->next = pevent->printklist; item->addr = addr; /* Strip off quotes and '\n' from the end */ if (fmt[0] == '"') fmt++; item->printk = strdup(fmt); if (!item->printk) goto out_free; p = item->printk + strlen(item->printk) - 1; if (*p == '"') *p = 0; p -= 2; if (strcmp(p, "\\n") == 0) *p = 0; pevent->printklist = item; pevent->printk_count++; return 0; out_free: free(item); errno = ENOMEM; return -1; } /** * pevent_print_printk - print out the stored strings * @pevent: handle for the pevent * * This prints the string formats that were stored. */ void pevent_print_printk(struct pevent *pevent) { int i; if (!pevent->printk_map) printk_map_init(pevent); for (i = 0; i < (int)pevent->printk_count; i++) { printf("%016llx %s\n", pevent->printk_map[i].addr, pevent->printk_map[i].printk); } } static struct event_format *alloc_event(void) { return calloc(1, sizeof(struct event_format)); } static int add_event(struct pevent *pevent, struct event_format *event) { int i; struct event_format **events = realloc(pevent->events, sizeof(event) * (pevent->nr_events + 1)); if (!events) return -1; pevent->events = events; for (i = 0; i < pevent->nr_events; i++) { if (pevent->events[i]->id > event->id) break; } if (i < pevent->nr_events) memmove(&pevent->events[i + 1], &pevent->events[i], sizeof(event) * (pevent->nr_events - i)); pevent->events[i] = event; pevent->nr_events++; event->pevent = pevent; return 0; } static int event_item_type(enum event_type type) { switch (type) { case EVENT_ITEM ... EVENT_SQUOTE: return 1; case EVENT_ERROR ... EVENT_DELIM: default: return 0; } } static void free_flag_sym(struct print_flag_sym *fsym) { struct print_flag_sym *next; while (fsym) { next = fsym->next; free(fsym->value); free(fsym->str); free(fsym); fsym = next; } } static void free_arg(struct print_arg *arg) { struct print_arg *farg; if (!arg) return; switch (arg->type) { case PRINT_ATOM: free(arg->atom.atom); break; case PRINT_FIELD: free(arg->field.name); break; case PRINT_FLAGS: free_arg(arg->flags.field); free(arg->flags.delim); free_flag_sym(arg->flags.flags); break; case PRINT_SYMBOL: free_arg(arg->symbol.field); free_flag_sym(arg->symbol.symbols); break; case PRINT_HEX: free_arg(arg->hex.field); free_arg(arg->hex.size); break; case PRINT_TYPE: free(arg->typecast.type); free_arg(arg->typecast.item); break; case PRINT_STRING: case PRINT_BSTRING: free(arg->string.string); break; case PRINT_BITMASK: free(arg->bitmask.bitmask); break; case PRINT_DYNAMIC_ARRAY: free(arg->dynarray.index); break; case PRINT_OP: free(arg->op.op); free_arg(arg->op.left); free_arg(arg->op.right); break; case PRINT_FUNC: while (arg->func.args) { farg = arg->func.args; arg->func.args = farg->next; free_arg(farg); } break; case PRINT_NULL: default: break; } free(arg); } static enum event_type get_type(int ch) { if (ch == '\n') return EVENT_NEWLINE; if (isspace(ch)) return EVENT_SPACE; if (isalnum(ch) || ch == '_') return EVENT_ITEM; if (ch == '\'') return EVENT_SQUOTE; if (ch == '"') return EVENT_DQUOTE; if (!isprint(ch)) return EVENT_NONE; if (ch == '(' || ch == ')' || ch == ',') return EVENT_DELIM; return EVENT_OP; } static int __read_char(void) { if (input_buf_ptr >= input_buf_siz) return -1; return input_buf[input_buf_ptr++]; } static int __peek_char(void) { if (input_buf_ptr >= input_buf_siz) return -1; return input_buf[input_buf_ptr]; } /** * pevent_peek_char - peek at the next character that will be read * * Returns the next character read, or -1 if end of buffer. */ int pevent_peek_char(void) { return __peek_char(); } static int extend_token(char **tok, char *buf, int size) { char *newtok = realloc(*tok, size); if (!newtok) { free(*tok); *tok = NULL; return -1; } if (!*tok) strcpy(newtok, buf); else strcat(newtok, buf); *tok = newtok; return 0; } static enum event_type force_token(const char *str, char **tok); static enum event_type __read_token(char **tok) { char buf[BUFSIZ]; int ch, last_ch, quote_ch, next_ch; int i = 0; int tok_size = 0; enum event_type type; *tok = NULL; ch = __read_char(); if (ch < 0) return EVENT_NONE; type = get_type(ch); if (type == EVENT_NONE) return type; buf[i++] = ch; switch (type) { case EVENT_NEWLINE: case EVENT_DELIM: if (asprintf(tok, "%c", ch) < 0) return EVENT_ERROR; return type; case EVENT_OP: switch (ch) { case '-': next_ch = __peek_char(); if (next_ch == '>') { buf[i++] = __read_char(); break; } /* fall through */ case '+': case '|': case '&': case '>': case '<': last_ch = ch; ch = __peek_char(); if (ch != last_ch) goto test_equal; buf[i++] = __read_char(); switch (last_ch) { case '>': case '<': goto test_equal; default: break; } break; case '!': case '=': goto test_equal; default: /* what should we do instead? */ break; } buf[i] = 0; *tok = strdup(buf); return type; test_equal: ch = __peek_char(); if (ch == '=') buf[i++] = __read_char(); goto out; case EVENT_DQUOTE: case EVENT_SQUOTE: /* don't keep quotes */ i--; quote_ch = ch; last_ch = 0; concat: do { if (i == (BUFSIZ - 1)) { buf[i] = 0; tok_size += BUFSIZ; if (extend_token(tok, buf, tok_size) < 0) return EVENT_NONE; i = 0; } last_ch = ch; ch = __read_char(); buf[i++] = ch; /* the '\' '\' will cancel itself */ if (ch == '\\' && last_ch == '\\') last_ch = 0; } while (ch != quote_ch || last_ch == '\\'); /* remove the last quote */ i--; /* * For strings (double quotes) check the next token. * If it is another string, concatinate the two. */ if (type == EVENT_DQUOTE) { unsigned long long save_input_buf_ptr = input_buf_ptr; do { ch = __read_char(); } while (isspace(ch)); if (ch == '"') goto concat; input_buf_ptr = save_input_buf_ptr; } goto out; case EVENT_ERROR ... EVENT_SPACE: case EVENT_ITEM: default: break; } while (get_type(__peek_char()) == type) { if (i == (BUFSIZ - 1)) { buf[i] = 0; tok_size += BUFSIZ; if (extend_token(tok, buf, tok_size) < 0) return EVENT_NONE; i = 0; } ch = __read_char(); buf[i++] = ch; } out: buf[i] = 0; if (extend_token(tok, buf, tok_size + i + 1) < 0) return EVENT_NONE; if (type == EVENT_ITEM) { /* * Older versions of the kernel has a bug that * creates invalid symbols and will break the mac80211 * parsing. This is a work around to that bug. * * See Linux kernel commit: * 811cb50baf63461ce0bdb234927046131fc7fa8b */ if (strcmp(*tok, "LOCAL_PR_FMT") == 0) { free(*tok); *tok = NULL; return force_token("\"\%s\" ", tok); } else if (strcmp(*tok, "STA_PR_FMT") == 0) { free(*tok); *tok = NULL; return force_token("\" sta:%pM\" ", tok); } else if (strcmp(*tok, "VIF_PR_FMT") == 0) { free(*tok); *tok = NULL; return force_token("\" vif:%p(%d)\" ", tok); } } return type; } static enum event_type force_token(const char *str, char **tok) { const char *save_input_buf; unsigned long long save_input_buf_ptr; unsigned long long save_input_buf_siz; enum event_type type; /* save off the current input pointers */ save_input_buf = input_buf; save_input_buf_ptr = input_buf_ptr; save_input_buf_siz = input_buf_siz; init_input_buf(str, strlen(str)); type = __read_token(tok); /* reset back to original token */ input_buf = save_input_buf; input_buf_ptr = save_input_buf_ptr; input_buf_siz = save_input_buf_siz; return type; } static void free_token(char *tok) { if (tok) free(tok); } static enum event_type read_token(char **tok) { enum event_type type; for (;;) { type = __read_token(tok); if (type != EVENT_SPACE) return type; free_token(*tok); } /* not reached */ *tok = NULL; return EVENT_NONE; } /** * pevent_read_token - access to utilites to use the pevent parser * @tok: The token to return * * This will parse tokens from the string given by * pevent_init_data(). * * Returns the token type. */ enum event_type pevent_read_token(char **tok) { return read_token(tok); } /** * pevent_free_token - free a token returned by pevent_read_token * @token: the token to free */ void pevent_free_token(char *token) { free_token(token); } /* no newline */ static enum event_type read_token_item(char **tok) { enum event_type type; for (;;) { type = __read_token(tok); if (type != EVENT_SPACE && type != EVENT_NEWLINE) return type; free_token(*tok); *tok = NULL; } /* not reached */ *tok = NULL; return EVENT_NONE; } static int test_type(enum event_type type, enum event_type expect) { if (type != expect) { do_warning("Error: expected type %d but read %d", expect, type); return -1; } return 0; } static int test_type_token(enum event_type type, const char *token, enum event_type expect, const char *expect_tok) { if (type != expect) { do_warning("Error: expected type %d but read %d", expect, type); return -1; } if (strcmp(token, expect_tok) != 0) { do_warning("Error: expected '%s' but read '%s'", expect_tok, token); return -1; } return 0; } static int __read_expect_type(enum event_type expect, char **tok, int newline_ok) { enum event_type type; if (newline_ok) type = read_token(tok); else type = read_token_item(tok); return test_type(type, expect); } static int read_expect_type(enum event_type expect, char **tok) { return __read_expect_type(expect, tok, 1); } static int __read_expected(enum event_type expect, const char *str, int newline_ok) { enum event_type type; char *token; int ret; if (newline_ok) type = read_token(&token); else type = read_token_item(&token); ret = test_type_token(type, token, expect, str); free_token(token); return ret; } static int read_expected(enum event_type expect, const char *str) { return __read_expected(expect, str, 1); } static int read_expected_item(enum event_type expect, const char *str) { return __read_expected(expect, str, 0); } static char *event_read_name(void) { char *token; if (read_expected(EVENT_ITEM, "name") < 0) return NULL; if (read_expected(EVENT_OP, ":") < 0) return NULL; if (read_expect_type(EVENT_ITEM, &token) < 0) goto fail; return token; fail: free_token(token); return NULL; } static int event_read_id(void) { char *token; int id; if (read_expected_item(EVENT_ITEM, "ID") < 0) return -1; if (read_expected(EVENT_OP, ":") < 0) return -1; if (read_expect_type(EVENT_ITEM, &token) < 0) goto fail; id = strtoul(token, NULL, 0); free_token(token); return id; fail: free_token(token); return -1; } static int field_is_string(struct format_field *field) { if ((field->flags & FIELD_IS_ARRAY) && (strstr(field->type, "char") || strstr(field->type, "u8") || strstr(field->type, "s8"))) return 1; return 0; } static int field_is_dynamic(struct format_field *field) { if (strncmp(field->type, "__data_loc", 10) == 0) return 1; return 0; } static int field_is_long(struct format_field *field) { /* includes long long */ if (strstr(field->type, "long")) return 1; return 0; } static unsigned int type_size(const char *name) { /* This covers all FIELD_IS_STRING types. */ static struct { const char *type; unsigned int size; } table[] = { { "u8", 1 }, { "u16", 2 }, { "u32", 4 }, { "u64", 8 }, { "s8", 1 }, { "s16", 2 }, { "s32", 4 }, { "s64", 8 }, { "char", 1 }, { }, }; int i; for (i = 0; table[i].type; i++) { if (!strcmp(table[i].type, name)) return table[i].size; } return 0; } static int event_read_fields(struct event_format *event, struct format_field **fields) { struct format_field *field = NULL; enum event_type type; char *token; char *last_token; int count = 0; do { unsigned int size_dynamic = 0; type = read_token(&token); if (type == EVENT_NEWLINE) { free_token(token); return count; } count++; if (test_type_token(type, token, EVENT_ITEM, "field")) goto fail; free_token(token); type = read_token(&token); /* * The ftrace fields may still use the "special" name. * Just ignore it. */ if (event->flags & EVENT_FL_ISFTRACE && type == EVENT_ITEM && strcmp(token, "special") == 0) { free_token(token); type = read_token(&token); } if (test_type_token(type, token, EVENT_OP, ":") < 0) goto fail; free_token(token); if (read_expect_type(EVENT_ITEM, &token) < 0) goto fail; last_token = token; field = calloc(1, sizeof(*field)); if (!field) goto fail; field->event = event; /* read the rest of the type */ for (;;) { type = read_token(&token); if (type == EVENT_ITEM || (type == EVENT_OP && strcmp(token, "*") == 0) || /* * Some of the ftrace fields are broken and have * an illegal "." in them. */ (event->flags & EVENT_FL_ISFTRACE && type == EVENT_OP && strcmp(token, ".") == 0)) { if (strcmp(token, "*") == 0) field->flags |= FIELD_IS_POINTER; if (field->type) { char *new_type; new_type = realloc(field->type, strlen(field->type) + strlen(last_token) + 2); if (!new_type) { free(last_token); goto fail; } field->type = new_type; strcat(field->type, " "); strcat(field->type, last_token); free(last_token); } else field->type = last_token; last_token = token; continue; } break; } if (!field->type) { do_warning_event(event, "%s: no type found", __func__); goto fail; } field->name = last_token; if (test_type(type, EVENT_OP)) goto fail; if (strcmp(token, "[") == 0) { enum event_type last_type = type; char *brackets = token; char *new_brackets; int len; field->flags |= FIELD_IS_ARRAY; type = read_token(&token); if (type == EVENT_ITEM) field->arraylen = strtoul(token, NULL, 0); else field->arraylen = 0; while (strcmp(token, "]") != 0) { if (last_type == EVENT_ITEM && type == EVENT_ITEM) len = 2; else len = 1; last_type = type; new_brackets = realloc(brackets, strlen(brackets) + strlen(token) + len); if (!new_brackets) { free(brackets); goto fail; } brackets = new_brackets; if (len == 2) strcat(brackets, " "); strcat(brackets, token); /* We only care about the last token */ field->arraylen = strtoul(token, NULL, 0); free_token(token); type = read_token(&token); if (type == EVENT_NONE) { do_warning_event(event, "failed to find token"); goto fail; } } free_token(token); new_brackets = realloc(brackets, strlen(brackets) + 2); if (!new_brackets) { free(brackets); goto fail; } brackets = new_brackets; strcat(brackets, "]"); /* add brackets to type */ type = read_token(&token); /* * If the next token is not an OP, then it is of * the format: type [] item; */ if (type == EVENT_ITEM) { char *new_type; new_type = realloc(field->type, strlen(field->type) + strlen(field->name) + strlen(brackets) + 2); if (!new_type) { free(brackets); goto fail; } field->type = new_type; strcat(field->type, " "); strcat(field->type, field->name); size_dynamic = type_size(field->name); free_token(field->name); strcat(field->type, brackets); field->name = token; type = read_token(&token); } else { char *new_type; new_type = realloc(field->type, strlen(field->type) + strlen(brackets) + 1); if (!new_type) { free(brackets); goto fail; } field->type = new_type; strcat(field->type, brackets); } free(brackets); } if (field_is_string(field)) field->flags |= FIELD_IS_STRING; if (field_is_dynamic(field)) field->flags |= FIELD_IS_DYNAMIC; if (field_is_long(field)) field->flags |= FIELD_IS_LONG; if (test_type_token(type, token, EVENT_OP, ";")) goto fail; free_token(token); if (read_expected(EVENT_ITEM, "offset") < 0) goto fail_expect; if (read_expected(EVENT_OP, ":") < 0) goto fail_expect; if (read_expect_type(EVENT_ITEM, &token)) goto fail; field->offset = strtoul(token, NULL, 0); free_token(token); if (read_expected(EVENT_OP, ";") < 0) goto fail_expect; if (read_expected(EVENT_ITEM, "size") < 0) goto fail_expect; if (read_expected(EVENT_OP, ":") < 0) goto fail_expect; if (read_expect_type(EVENT_ITEM, &token)) goto fail; field->size = strtoul(token, NULL, 0); free_token(token); if (read_expected(EVENT_OP, ";") < 0) goto fail_expect; type = read_token(&token); if (type != EVENT_NEWLINE) { /* newer versions of the kernel have a "signed" type */ if (test_type_token(type, token, EVENT_ITEM, "signed")) goto fail; free_token(token); if (read_expected(EVENT_OP, ":") < 0) goto fail_expect; if (read_expect_type(EVENT_ITEM, &token)) goto fail; if (strtoul(token, NULL, 0)) field->flags |= FIELD_IS_SIGNED; free_token(token); if (read_expected(EVENT_OP, ";") < 0) goto fail_expect; if (read_expect_type(EVENT_NEWLINE, &token)) goto fail; } free_token(token); if (field->flags & FIELD_IS_ARRAY) { if (field->arraylen) field->elementsize = field->size / field->arraylen; else if (field->flags & FIELD_IS_DYNAMIC) field->elementsize = size_dynamic; else if (field->flags & FIELD_IS_STRING) field->elementsize = 1; else if (field->flags & FIELD_IS_LONG) field->elementsize = event->pevent ? event->pevent->long_size : sizeof(long); } else field->elementsize = field->size; *fields = field; fields = &field->next; } while (1); return 0; fail: free_token(token); fail_expect: if (field) { free(field->type); free(field->name); free(field); } return -1; } static int event_read_format(struct event_format *event) { char *token; int ret; if (read_expected_item(EVENT_ITEM, "format") < 0) return -1; if (read_expected(EVENT_OP, ":") < 0) return -1; if (read_expect_type(EVENT_NEWLINE, &token)) goto fail; free_token(token); ret = event_read_fields(event, &event->format.common_fields); if (ret < 0) return ret; event->format.nr_common = ret; ret = event_read_fields(event, &event->format.fields); if (ret < 0) return ret; event->format.nr_fields = ret; return 0; fail: free_token(token); return -1; } static enum event_type process_arg_token(struct event_format *event, struct print_arg *arg, char **tok, enum event_type type); static enum event_type process_arg(struct event_format *event, struct print_arg *arg, char **tok) { enum event_type type; char *token; type = read_token(&token); *tok = token; return process_arg_token(event, arg, tok, type); } static enum event_type process_op(struct event_format *event, struct print_arg *arg, char **tok); /* * For __print_symbolic() and __print_flags, we need to completely * evaluate the first argument, which defines what to print next. */ static enum event_type process_field_arg(struct event_format *event, struct print_arg *arg, char **tok) { enum event_type type; type = process_arg(event, arg, tok); while (type == EVENT_OP) { type = process_op(event, arg, tok); } return type; } static enum event_type process_cond(struct event_format *event, struct print_arg *top, char **tok) { struct print_arg *arg, *left, *right; enum event_type type; char *token = NULL; arg = alloc_arg(); left = alloc_arg(); right = alloc_arg(); if (!arg || !left || !right) { do_warning_event(event, "%s: not enough memory!", __func__); /* arg will be freed at out_free */ free_arg(left); free_arg(right); goto out_free; } arg->type = PRINT_OP; arg->op.left = left; arg->op.right = right; *tok = NULL; type = process_arg(event, left, &token); again: /* Handle other operations in the arguments */ if (type == EVENT_OP && strcmp(token, ":") != 0) { type = process_op(event, left, &token); goto again; } if (test_type_token(type, token, EVENT_OP, ":")) goto out_free; arg->op.op = token; type = process_arg(event, right, &token); top->op.right = arg; *tok = token; return type; out_free: /* Top may point to itself */ top->op.right = NULL; free_token(token); free_arg(arg); return EVENT_ERROR; } static enum event_type process_array(struct event_format *event, struct print_arg *top, char **tok) { struct print_arg *arg; enum event_type type; char *token = NULL; arg = alloc_arg(); if (!arg) { do_warning_event(event, "%s: not enough memory!", __func__); /* '*tok' is set to top->op.op. No need to free. */ *tok = NULL; return EVENT_ERROR; } *tok = NULL; type = process_arg(event, arg, &token); if (test_type_token(type, token, EVENT_OP, "]")) goto out_free; top->op.right = arg; free_token(token); type = read_token_item(&token); *tok = token; return type; out_free: free_token(token); free_arg(arg); return EVENT_ERROR; } static int get_op_prio(char *op) { if (!op[1]) { switch (op[0]) { case '~': case '!': return 4; case '*': case '/': case '%': return 6; case '+': case '-': return 7; /* '>>' and '<<' are 8 */ case '<': case '>': return 9; /* '==' and '!=' are 10 */ case '&': return 11; case '^': return 12; case '|': return 13; case '?': return 16; default: do_warning("unknown op '%c'", op[0]); return -1; } } else { if (strcmp(op, "++") == 0 || strcmp(op, "--") == 0) { return 3; } else if (strcmp(op, ">>") == 0 || strcmp(op, "<<") == 0) { return 8; } else if (strcmp(op, ">=") == 0 || strcmp(op, "<=") == 0) { return 9; } else if (strcmp(op, "==") == 0 || strcmp(op, "!=") == 0) { return 10; } else if (strcmp(op, "&&") == 0) { return 14; } else if (strcmp(op, "||") == 0) { return 15; } else { do_warning("unknown op '%s'", op); return -1; } } } static int set_op_prio(struct print_arg *arg) { /* single ops are the greatest */ if (!arg->op.left || arg->op.left->type == PRINT_NULL) arg->op.prio = 0; else arg->op.prio = get_op_prio(arg->op.op); return arg->op.prio; } /* Note, *tok does not get freed, but will most likely be saved */ static enum event_type process_op(struct event_format *event, struct print_arg *arg, char **tok) { struct print_arg *left, *right = NULL; enum event_type type; char *token; /* the op is passed in via tok */ token = *tok; if (arg->type == PRINT_OP && !arg->op.left) { /* handle single op */ if (token[1]) { do_warning_event(event, "bad op token %s", token); goto out_free; } switch (token[0]) { case '~': case '!': case '+': case '-': break; default: do_warning_event(event, "bad op token %s", token); goto out_free; } /* make an empty left */ left = alloc_arg(); if (!left) goto out_warn_free; left->type = PRINT_NULL; arg->op.left = left; right = alloc_arg(); if (!right) goto out_warn_free; arg->op.right = right; /* do not free the token, it belongs to an op */ *tok = NULL; type = process_arg(event, right, tok); } else if (strcmp(token, "?") == 0) { left = alloc_arg(); if (!left) goto out_warn_free; /* copy the top arg to the left */ *left = *arg; arg->type = PRINT_OP; arg->op.op = token; arg->op.left = left; arg->op.prio = 0; /* it will set arg->op.right */ type = process_cond(event, arg, tok); } else if (strcmp(token, ">>") == 0 || strcmp(token, "<<") == 0 || strcmp(token, "&") == 0 || strcmp(token, "|") == 0 || strcmp(token, "&&") == 0 || strcmp(token, "||") == 0 || strcmp(token, "-") == 0 || strcmp(token, "+") == 0 || strcmp(token, "*") == 0 || strcmp(token, "^") == 0 || strcmp(token, "/") == 0 || strcmp(token, "<") == 0 || strcmp(token, ">") == 0 || strcmp(token, "<=") == 0 || strcmp(token, ">=") == 0 || strcmp(token, "==") == 0 || strcmp(token, "!=") == 0) { left = alloc_arg(); if (!left) goto out_warn_free; /* copy the top arg to the left */ *left = *arg; arg->type = PRINT_OP; arg->op.op = token; arg->op.left = left; arg->op.right = NULL; if (set_op_prio(arg) == -1) { event->flags |= EVENT_FL_FAILED; /* arg->op.op (= token) will be freed at out_free */ arg->op.op = NULL; goto out_free; } type = read_token_item(&token); *tok = token; /* could just be a type pointer */ if ((strcmp(arg->op.op, "*") == 0) && type == EVENT_DELIM && (strcmp(token, ")") == 0)) { char *new_atom; if (left->type != PRINT_ATOM) { do_warning_event(event, "bad pointer type"); goto out_free; } new_atom = realloc(left->atom.atom, strlen(left->atom.atom) + 3); if (!new_atom) goto out_warn_free; left->atom.atom = new_atom; strcat(left->atom.atom, " *"); free(arg->op.op); *arg = *left; free(left); return type; } right = alloc_arg(); if (!right) goto out_warn_free; type = process_arg_token(event, right, tok, type); arg->op.right = right; } else if (strcmp(token, "[") == 0) { left = alloc_arg(); if (!left) goto out_warn_free; *left = *arg; arg->type = PRINT_OP; arg->op.op = token; arg->op.left = left; arg->op.prio = 0; /* it will set arg->op.right */ type = process_array(event, arg, tok); } else { do_warning_event(event, "unknown op '%s'", token); event->flags |= EVENT_FL_FAILED; /* the arg is now the left side */ goto out_free; } if (type == EVENT_OP && strcmp(*tok, ":") != 0) { int prio; /* higher prios need to be closer to the root */ prio = get_op_prio(*tok); if (prio > arg->op.prio) return process_op(event, arg, tok); return process_op(event, right, tok); } return type; out_warn_free: do_warning_event(event, "%s: not enough memory!", __func__); out_free: free_token(token); *tok = NULL; return EVENT_ERROR; } static enum event_type process_entry(struct event_format *event __maybe_unused, struct print_arg *arg, char **tok) { enum event_type type; char *field; char *token; if (read_expected(EVENT_OP, "->") < 0) goto out_err; if (read_expect_type(EVENT_ITEM, &token) < 0) goto out_free; field = token; arg->type = PRINT_FIELD; arg->field.name = field; if (is_flag_field) { arg->field.field = pevent_find_any_field(event, arg->field.name); arg->field.field->flags |= FIELD_IS_FLAG; is_flag_field = 0; } else if (is_symbolic_field) { arg->field.field = pevent_find_any_field(event, arg->field.name); arg->field.field->flags |= FIELD_IS_SYMBOLIC; is_symbolic_field = 0; } type = read_token(&token); *tok = token; return type; out_free: free_token(token); out_err: *tok = NULL; return EVENT_ERROR; } static char *arg_eval (struct print_arg *arg); static unsigned long long eval_type_str(unsigned long long val, const char *type, int pointer) { int sign = 0; char *ref; int len; len = strlen(type); if (pointer) { if (type[len-1] != '*') { do_warning("pointer expected with non pointer type"); return val; } ref = malloc(len); if (!ref) { do_warning("%s: not enough memory!", __func__); return val; } memcpy(ref, type, len); /* chop off the " *" */ ref[len - 2] = 0; val = eval_type_str(val, ref, 0); free(ref); return val; } /* check if this is a pointer */ if (type[len - 1] == '*') return val; /* Try to figure out the arg size*/ if (strncmp(type, "struct", 6) == 0) /* all bets off */ return val; if (strcmp(type, "u8") == 0) return val & 0xff; if (strcmp(type, "u16") == 0) return val & 0xffff; if (strcmp(type, "u32") == 0) return val & 0xffffffff; if (strcmp(type, "u64") == 0 || strcmp(type, "s64")) return val; if (strcmp(type, "s8") == 0) return (unsigned long long)(char)val & 0xff; if (strcmp(type, "s16") == 0) return (unsigned long long)(short)val & 0xffff; if (strcmp(type, "s32") == 0) return (unsigned long long)(int)val & 0xffffffff; if (strncmp(type, "unsigned ", 9) == 0) { sign = 0; type += 9; } if (strcmp(type, "char") == 0) { if (sign) return (unsigned long long)(char)val & 0xff; else return val & 0xff; } if (strcmp(type, "short") == 0) { if (sign) return (unsigned long long)(short)val & 0xffff; else return val & 0xffff; } if (strcmp(type, "int") == 0) { if (sign) return (unsigned long long)(int)val & 0xffffffff; else return val & 0xffffffff; } return val; } /* * Try to figure out the type. */ static unsigned long long eval_type(unsigned long long val, struct print_arg *arg, int pointer) { if (arg->type != PRINT_TYPE) { do_warning("expected type argument"); return 0; } return eval_type_str(val, arg->typecast.type, pointer); } static int arg_num_eval(struct print_arg *arg, long long *val) { long long left, right; int ret = 1; switch (arg->type) { case PRINT_ATOM: *val = strtoll(arg->atom.atom, NULL, 0); break; case PRINT_TYPE: ret = arg_num_eval(arg->typecast.item, val); if (!ret) break; *val = eval_type(*val, arg, 0); break; case PRINT_OP: switch (arg->op.op[0]) { case '|': ret = arg_num_eval(arg->op.left, &left); if (!ret) break; ret = arg_num_eval(arg->op.right, &right); if (!ret) break; if (arg->op.op[1]) *val = left || right; else *val = left | right; break; case '&': ret = arg_num_eval(arg->op.left, &left); if (!ret) break; ret = arg_num_eval(arg->op.right, &right); if (!ret) break; if (arg->op.op[1]) *val = left && right; else *val = left & right; break; case '<': ret = arg_num_eval(arg->op.left, &left); if (!ret) break; ret = arg_num_eval(arg->op.right, &right); if (!ret) break; switch (arg->op.op[1]) { case 0: *val = left < right; break; case '<': *val = left << right; break; case '=': *val = left <= right; break; default: do_warning("unknown op '%s'", arg->op.op); ret = 0; } break; case '>': ret = arg_num_eval(arg->op.left, &left); if (!ret) break; ret = arg_num_eval(arg->op.right, &right); if (!ret) break; switch (arg->op.op[1]) { case 0: *val = left > right; break; case '>': *val = left >> right; break; case '=': *val = left >= right; break; default: do_warning("unknown op '%s'", arg->op.op); ret = 0; } break; case '=': ret = arg_num_eval(arg->op.left, &left); if (!ret) break; ret = arg_num_eval(arg->op.right, &right); if (!ret) break; if (arg->op.op[1] != '=') { do_warning("unknown op '%s'", arg->op.op); ret = 0; } else *val = left == right; break; case '!': ret = arg_num_eval(arg->op.left, &left); if (!ret) break; ret = arg_num_eval(arg->op.right, &right); if (!ret) break; switch (arg->op.op[1]) { case '=': *val = left != right; break; default: do_warning("unknown op '%s'", arg->op.op); ret = 0; } break; case '-': /* check for negative */ if (arg->op.left->type == PRINT_NULL) left = 0; else ret = arg_num_eval(arg->op.left, &left); if (!ret) break; ret = arg_num_eval(arg->op.right, &right); if (!ret) break; *val = left - right; break; case '+': if (arg->op.left->type == PRINT_NULL) left = 0; else ret = arg_num_eval(arg->op.left, &left); if (!ret) break; ret = arg_num_eval(arg->op.right, &right); if (!ret) break; *val = left + right; break; default: do_warning("unknown op '%s'", arg->op.op); ret = 0; } break; case PRINT_NULL: case PRINT_FIELD ... PRINT_SYMBOL: case PRINT_STRING: case PRINT_BSTRING: case PRINT_BITMASK: default: do_warning("invalid eval type %d", arg->type); ret = 0; } return ret; } static char *arg_eval (struct print_arg *arg) { long long val; static char buf[20]; switch (arg->type) { case PRINT_ATOM: return arg->atom.atom; case PRINT_TYPE: return arg_eval(arg->typecast.item); case PRINT_OP: if (!arg_num_eval(arg, &val)) break; sprintf(buf, "%lld", val); return buf; case PRINT_NULL: case PRINT_FIELD ... PRINT_SYMBOL: case PRINT_STRING: case PRINT_BSTRING: case PRINT_BITMASK: default: do_warning("invalid eval type %d", arg->type); break; } return NULL; } static enum event_type process_fields(struct event_format *event, struct print_flag_sym **list, char **tok) { enum event_type type; struct print_arg *arg = NULL; struct print_flag_sym *field; char *token = *tok; char *value; do { free_token(token); type = read_token_item(&token); if (test_type_token(type, token, EVENT_OP, "{")) break; arg = alloc_arg(); if (!arg) goto out_free; free_token(token); type = process_arg(event, arg, &token); if (type == EVENT_OP) type = process_op(event, arg, &token); if (type == EVENT_ERROR) goto out_free; if (test_type_token(type, token, EVENT_DELIM, ",")) goto out_free; field = calloc(1, sizeof(*field)); if (!field) goto out_free; value = arg_eval(arg); if (value == NULL) goto out_free_field; field->value = strdup(value); if (field->value == NULL) goto out_free_field; free_arg(arg); arg = alloc_arg(); if (!arg) goto out_free; free_token(token); type = process_arg(event, arg, &token); if (test_type_token(type, token, EVENT_OP, "}")) goto out_free_field; value = arg_eval(arg); if (value == NULL) goto out_free_field; field->str = strdup(value); if (field->str == NULL) goto out_free_field; free_arg(arg); arg = NULL; *list = field; list = &field->next; free_token(token); type = read_token_item(&token); } while (type == EVENT_DELIM && strcmp(token, ",") == 0); *tok = token; return type; out_free_field: free_flag_sym(field); out_free: free_arg(arg); free_token(token); *tok = NULL; return EVENT_ERROR; } static enum event_type process_flags(struct event_format *event, struct print_arg *arg, char **tok) { struct print_arg *field; enum event_type type; char *token = NULL; memset(arg, 0, sizeof(*arg)); arg->type = PRINT_FLAGS; field = alloc_arg(); if (!field) { do_warning_event(event, "%s: not enough memory!", __func__); goto out_free; } type = process_field_arg(event, field, &token); /* Handle operations in the first argument */ while (type == EVENT_OP) type = process_op(event, field, &token); if (test_type_token(type, token, EVENT_DELIM, ",")) goto out_free_field; free_token(token); arg->flags.field = field; type = read_token_item(&token); if (event_item_type(type)) { arg->flags.delim = token; type = read_token_item(&token); } if (test_type_token(type, token, EVENT_DELIM, ",")) goto out_free; type = process_fields(event, &arg->flags.flags, &token); if (test_type_token(type, token, EVENT_DELIM, ")")) goto out_free; free_token(token); type = read_token_item(tok); return type; out_free_field: free_arg(field); out_free: free_token(token); *tok = NULL; return EVENT_ERROR; } static enum event_type process_symbols(struct event_format *event, struct print_arg *arg, char **tok) { struct print_arg *field; enum event_type type; char *token = NULL; memset(arg, 0, sizeof(*arg)); arg->type = PRINT_SYMBOL; field = alloc_arg(); if (!field) { do_warning_event(event, "%s: not enough memory!", __func__); goto out_free; } type = process_field_arg(event, field, &token); if (test_type_token(type, token, EVENT_DELIM, ",")) goto out_free_field; arg->symbol.field = field; type = process_fields(event, &arg->symbol.symbols, &token); if (test_type_token(type, token, EVENT_DELIM, ")")) goto out_free; free_token(token); type = read_token_item(tok); return type; out_free_field: free_arg(field); out_free: free_token(token); *tok = NULL; return EVENT_ERROR; } static enum event_type process_hex(struct event_format *event, struct print_arg *arg, char **tok) { struct print_arg *field; enum event_type type; char *token = NULL; memset(arg, 0, sizeof(*arg)); arg->type = PRINT_HEX; field = alloc_arg(); if (!field) { do_warning_event(event, "%s: not enough memory!", __func__); goto out_free; } type = process_arg(event, field, &token); if (test_type_token(type, token, EVENT_DELIM, ",")) goto out_free; arg->hex.field = field; free_token(token); field = alloc_arg(); if (!field) { do_warning_event(event, "%s: not enough memory!", __func__); *tok = NULL; return EVENT_ERROR; } type = process_arg(event, field, &token); if (test_type_token(type, token, EVENT_DELIM, ")")) goto out_free; arg->hex.size = field; free_token(token); type = read_token_item(tok); return type; out_free: free_arg(field); free_token(token); *tok = NULL; return EVENT_ERROR; } static enum event_type process_dynamic_array(struct event_format *event, struct print_arg *arg, char **tok) { struct format_field *field; enum event_type type; char *token; memset(arg, 0, sizeof(*arg)); arg->type = PRINT_DYNAMIC_ARRAY; /* * The item within the parenthesis is another field that holds * the index into where the array starts. */ type = read_token(&token); *tok = token; if (type != EVENT_ITEM) goto out_free; /* Find the field */ field = pevent_find_field(event, token); if (!field) goto out_free; arg->dynarray.field = field; arg->dynarray.index = 0; if (read_expected(EVENT_DELIM, ")") < 0) goto out_free; free_token(token); type = read_token_item(&token); *tok = token; if (type != EVENT_OP || strcmp(token, "[") != 0) return type; free_token(token); arg = alloc_arg(); if (!arg) { do_warning_event(event, "%s: not enough memory!", __func__); *tok = NULL; return EVENT_ERROR; } type = process_arg(event, arg, &token); if (type == EVENT_ERROR) goto out_free_arg; if (!test_type_token(type, token, EVENT_OP, "]")) goto out_free_arg; free_token(token); type = read_token_item(tok); return type; out_free_arg: free_arg(arg); out_free: free_token(token); *tok = NULL; return EVENT_ERROR; } static enum event_type process_paren(struct event_format *event, struct print_arg *arg, char **tok) { struct print_arg *item_arg; enum event_type type; char *token; type = process_arg(event, arg, &token); if (type == EVENT_ERROR) goto out_free; if (type == EVENT_OP) type = process_op(event, arg, &token); if (type == EVENT_ERROR) goto out_free; if (test_type_token(type, token, EVENT_DELIM, ")")) goto out_free; free_token(token); type = read_token_item(&token); /* * If the next token is an item or another open paren, then * this was a typecast. */ if (event_item_type(type) || (type == EVENT_DELIM && strcmp(token, "(") == 0)) { /* make this a typecast and contine */ /* prevous must be an atom */ if (arg->type != PRINT_ATOM) { do_warning_event(event, "previous needed to be PRINT_ATOM"); goto out_free; } item_arg = alloc_arg(); if (!item_arg) { do_warning_event(event, "%s: not enough memory!", __func__); goto out_free; } arg->type = PRINT_TYPE; arg->typecast.type = arg->atom.atom; arg->typecast.item = item_arg; type = process_arg_token(event, item_arg, &token, type); } *tok = token; return type; out_free: free_token(token); *tok = NULL; return EVENT_ERROR; } static enum event_type process_str(struct event_format *event __maybe_unused, struct print_arg *arg, char **tok) { enum event_type type; char *token; if (read_expect_type(EVENT_ITEM, &token) < 0) goto out_free; arg->type = PRINT_STRING; arg->string.string = token; arg->string.offset = -1; if (read_expected(EVENT_DELIM, ")") < 0) goto out_err; type = read_token(&token); *tok = token; return type; out_free: free_token(token); out_err: *tok = NULL; return EVENT_ERROR; } static enum event_type process_bitmask(struct event_format *event __maybe_unused, struct print_arg *arg, char **tok) { enum event_type type; char *token; if (read_expect_type(EVENT_ITEM, &token) < 0) goto out_free; arg->type = PRINT_BITMASK; arg->bitmask.bitmask = token; arg->bitmask.offset = -1; if (read_expected(EVENT_DELIM, ")") < 0) goto out_err; type = read_token(&token); *tok = token; return type; out_free: free_token(token); out_err: *tok = NULL; return EVENT_ERROR; } static struct pevent_function_handler * find_func_handler(struct pevent *pevent, char *func_name) { struct pevent_function_handler *func; if (!pevent) return NULL; for (func = pevent->func_handlers; func; func = func->next) { if (strcmp(func->name, func_name) == 0) break; } return func; } static void remove_func_handler(struct pevent *pevent, char *func_name) { struct pevent_function_handler *func; struct pevent_function_handler **next; next = &pevent->func_handlers; while ((func = *next)) { if (strcmp(func->name, func_name) == 0) { *next = func->next; free_func_handle(func); break; } next = &func->next; } } static enum event_type process_func_handler(struct event_format *event, struct pevent_function_handler *func, struct print_arg *arg, char **tok) { struct print_arg **next_arg; struct print_arg *farg; enum event_type type; char *token; int i; arg->type = PRINT_FUNC; arg->func.func = func; *tok = NULL; next_arg = &(arg->func.args); for (i = 0; i < func->nr_args; i++) { farg = alloc_arg(); if (!farg) { do_warning_event(event, "%s: not enough memory!", __func__); return EVENT_ERROR; } type = process_arg(event, farg, &token); if (i < (func->nr_args - 1)) { if (type != EVENT_DELIM || strcmp(token, ",") != 0) { do_warning_event(event, "Error: function '%s()' expects %d arguments but event %s only uses %d", func->name, func->nr_args, event->name, i + 1); goto err; } } else { if (type != EVENT_DELIM || strcmp(token, ")") != 0) { do_warning_event(event, "Error: function '%s()' only expects %d arguments but event %s has more", func->name, func->nr_args, event->name); goto err; } } *next_arg = farg; next_arg = &(farg->next); free_token(token); } type = read_token(&token); *tok = token; return type; err: free_arg(farg); free_token(token); return EVENT_ERROR; } static enum event_type process_function(struct event_format *event, struct print_arg *arg, char *token, char **tok) { struct pevent_function_handler *func; if (strcmp(token, "__print_flags") == 0) { free_token(token); is_flag_field = 1; return process_flags(event, arg, tok); } if (strcmp(token, "__print_symbolic") == 0) { free_token(token); is_symbolic_field = 1; return process_symbols(event, arg, tok); } if (strcmp(token, "__print_hex") == 0) { free_token(token); return process_hex(event, arg, tok); } if (strcmp(token, "__get_str") == 0) { free_token(token); return process_str(event, arg, tok); } if (strcmp(token, "__get_bitmask") == 0) { free_token(token); return process_bitmask(event, arg, tok); } if (strcmp(token, "__get_dynamic_array") == 0) { free_token(token); return process_dynamic_array(event, arg, tok); } func = find_func_handler(event->pevent, token); if (func) { free_token(token); return process_func_handler(event, func, arg, tok); } do_warning_event(event, "function %s not defined", token); free_token(token); return EVENT_ERROR; } static enum event_type process_arg_token(struct event_format *event, struct print_arg *arg, char **tok, enum event_type type) { char *token; char *atom; token = *tok; switch (type) { case EVENT_ITEM: if (strcmp(token, "REC") == 0) { free_token(token); type = process_entry(event, arg, &token); break; } atom = token; /* test the next token */ type = read_token_item(&token); /* * If the next token is a parenthesis, then this * is a function. */ if (type == EVENT_DELIM && strcmp(token, "(") == 0) { free_token(token); token = NULL; /* this will free atom. */ type = process_function(event, arg, atom, &token); break; } /* atoms can be more than one token long */ while (type == EVENT_ITEM) { char *new_atom; new_atom = realloc(atom, strlen(atom) + strlen(token) + 2); if (!new_atom) { free(atom); *tok = NULL; free_token(token); return EVENT_ERROR; } atom = new_atom; strcat(atom, " "); strcat(atom, token); free_token(token); type = read_token_item(&token); } arg->type = PRINT_ATOM; arg->atom.atom = atom; break; case EVENT_DQUOTE: case EVENT_SQUOTE: arg->type = PRINT_ATOM; arg->atom.atom = token; type = read_token_item(&token); break; case EVENT_DELIM: if (strcmp(token, "(") == 0) { free_token(token); type = process_paren(event, arg, &token); break; } case EVENT_OP: /* handle single ops */ arg->type = PRINT_OP; arg->op.op = token; arg->op.left = NULL; type = process_op(event, arg, &token); /* On error, the op is freed */ if (type == EVENT_ERROR) arg->op.op = NULL; /* return error type if errored */ break; case EVENT_ERROR ... EVENT_NEWLINE: default: do_warning_event(event, "unexpected type %d", type); return EVENT_ERROR; } *tok = token; return type; } static int event_read_print_args(struct event_format *event, struct print_arg **list) { enum event_type type = EVENT_ERROR; struct print_arg *arg; char *token; int args = 0; do { if (type == EVENT_NEWLINE) { type = read_token_item(&token); continue; } arg = alloc_arg(); if (!arg) { do_warning_event(event, "%s: not enough memory!", __func__); return -1; } type = process_arg(event, arg, &token); if (type == EVENT_ERROR) { free_token(token); free_arg(arg); return -1; } *list = arg; args++; if (type == EVENT_OP) { type = process_op(event, arg, &token); free_token(token); if (type == EVENT_ERROR) { *list = NULL; free_arg(arg); return -1; } list = &arg->next; continue; } if (type == EVENT_DELIM && strcmp(token, ",") == 0) { free_token(token); *list = arg; list = &arg->next; continue; } break; } while (type != EVENT_NONE); if (type != EVENT_NONE && type != EVENT_ERROR) free_token(token); return args; } static int event_read_print(struct event_format *event) { enum event_type type; char *token; int ret; if (read_expected_item(EVENT_ITEM, "print") < 0) return -1; if (read_expected(EVENT_ITEM, "fmt") < 0) return -1; if (read_expected(EVENT_OP, ":") < 0) return -1; if (read_expect_type(EVENT_DQUOTE, &token) < 0) goto fail; concat: event->print_fmt.format = token; event->print_fmt.args = NULL; /* ok to have no arg */ type = read_token_item(&token); if (type == EVENT_NONE) return 0; /* Handle concatenation of print lines */ if (type == EVENT_DQUOTE) { char *cat; if (asprintf(&cat, "%s%s", event->print_fmt.format, token) < 0) goto fail; free_token(token); free_token(event->print_fmt.format); event->print_fmt.format = NULL; token = cat; goto concat; } if (test_type_token(type, token, EVENT_DELIM, ",")) goto fail; free_token(token); ret = event_read_print_args(event, &event->print_fmt.args); if (ret < 0) return -1; return ret; fail: free_token(token); return -1; } /** * pevent_find_common_field - return a common field by event * @event: handle for the event * @name: the name of the common field to return * * Returns a common field from the event by the given @name. * This only searchs the common fields and not all field. */ struct format_field * pevent_find_common_field(struct event_format *event, const char *name) { struct format_field *format; for (format = event->format.common_fields; format; format = format->next) { if (strcmp(format->name, name) == 0) break; } return format; } /** * pevent_find_field - find a non-common field * @event: handle for the event * @name: the name of the non-common field * * Returns a non-common field by the given @name. * This does not search common fields. */ struct format_field * pevent_find_field(struct event_format *event, const char *name) { struct format_field *format; for (format = event->format.fields; format; format = format->next) { if (strcmp(format->name, name) == 0) break; } return format; } /** * pevent_find_any_field - find any field by name * @event: handle for the event * @name: the name of the field * * Returns a field by the given @name. * This searchs the common field names first, then * the non-common ones if a common one was not found. */ struct format_field * pevent_find_any_field(struct event_format *event, const char *name) { struct format_field *format; format = pevent_find_common_field(event, name); if (format) return format; return pevent_find_field(event, name); } /** * pevent_read_number - read a number from data * @pevent: handle for the pevent * @ptr: the raw data * @size: the size of the data that holds the number * * Returns the number (converted to host) from the * raw data. */ unsigned long long pevent_read_number(struct pevent *pevent, const void *ptr, int size) { switch (size) { case 1: return *(unsigned char *)ptr; case 2: return data2host2(pevent, ptr); case 4: return data2host4(pevent, ptr); case 8: return data2host8(pevent, ptr); default: /* BUG! */ return 0; } } /** * pevent_read_number_field - read a number from data * @field: a handle to the field * @data: the raw data to read * @value: the value to place the number in * * Reads raw data according to a field offset and size, * and translates it into @value. * * Returns 0 on success, -1 otherwise. */ int pevent_read_number_field(struct format_field *field, const void *data, unsigned long long *value) { if (!field) return -1; switch (field->size) { case 1: case 2: case 4: case 8: *value = pevent_read_number(field->event->pevent, data + field->offset, field->size); return 0; default: return -1; } } static int get_common_info(struct pevent *pevent, const char *type, int *offset, int *size) { struct event_format *event; struct format_field *field; /* * All events should have the same common elements. * Pick any event to find where the type is; */ if (!pevent->events) { do_warning("no event_list!"); return -1; } event = pevent->events[0]; field = pevent_find_common_field(event, type); if (!field) return -1; *offset = field->offset; *size = field->size; return 0; } static int __parse_common(struct pevent *pevent, void *data, int *size, int *offset, const char *name) { int ret; if (!*size) { ret = get_common_info(pevent, name, offset, size); if (ret < 0) return ret; } return pevent_read_number(pevent, data + *offset, *size); } static int trace_parse_common_type(struct pevent *pevent, void *data) { return __parse_common(pevent, data, &pevent->type_size, &pevent->type_offset, "common_type"); } static int parse_common_pid(struct pevent *pevent, void *data) { return __parse_common(pevent, data, &pevent->pid_size, &pevent->pid_offset, "common_pid"); } static int parse_common_pc(struct pevent *pevent, void *data) { return __parse_common(pevent, data, &pevent->pc_size, &pevent->pc_offset, "common_preempt_count"); } static int parse_common_flags(struct pevent *pevent, void *data) { return __parse_common(pevent, data, &pevent->flags_size, &pevent->flags_offset, "common_flags"); } static int parse_common_lock_depth(struct pevent *pevent, void *data) { return __parse_common(pevent, data, &pevent->ld_size, &pevent->ld_offset, "common_lock_depth"); } static int parse_common_migrate_disable(struct pevent *pevent, void *data) { return __parse_common(pevent, data, &pevent->ld_size, &pevent->ld_offset, "common_migrate_disable"); } static int events_id_cmp(const void *a, const void *b); /** * pevent_find_event - find an event by given id * @pevent: a handle to the pevent * @id: the id of the event * * Returns an event that has a given @id. */ struct event_format *pevent_find_event(struct pevent *pevent, int id) { struct event_format **eventptr; struct event_format key; struct event_format *pkey = &key; /* Check cache first */ if (pevent->last_event && pevent->last_event->id == id) return pevent->last_event; key.id = id; eventptr = bsearch(&pkey, pevent->events, pevent->nr_events, sizeof(*pevent->events), events_id_cmp); if (eventptr) { pevent->last_event = *eventptr; return *eventptr; } return NULL; } /** * pevent_find_event_by_name - find an event by given name * @pevent: a handle to the pevent * @sys: the system name to search for * @name: the name of the event to search for * * This returns an event with a given @name and under the system * @sys. If @sys is NULL the first event with @name is returned. */ struct event_format * pevent_find_event_by_name(struct pevent *pevent, const char *sys, const char *name) { struct event_format *event; int i; if (pevent->last_event && strcmp(pevent->last_event->name, name) == 0 && (!sys || strcmp(pevent->last_event->system, sys) == 0)) return pevent->last_event; for (i = 0; i < pevent->nr_events; i++) { event = pevent->events[i]; if (strcmp(event->name, name) == 0) { if (!sys) break; if (strcmp(event->system, sys) == 0) break; } } if (i == pevent->nr_events) event = NULL; pevent->last_event = event; return event; } static unsigned long long eval_num_arg(void *data, int size, struct event_format *event, struct print_arg *arg) { struct pevent *pevent = event->pevent; unsigned long long val = 0; unsigned long long left, right; struct print_arg *typearg = NULL; struct print_arg *larg; unsigned long offset; unsigned int field_size; switch (arg->type) { case PRINT_NULL: /* ?? */ return 0; case PRINT_ATOM: return strtoull(arg->atom.atom, NULL, 0); case PRINT_FIELD: if (!arg->field.field) { arg->field.field = pevent_find_any_field(event, arg->field.name); if (!arg->field.field) goto out_warning_field; } /* must be a number */ val = pevent_read_number(pevent, data + arg->field.field->offset, arg->field.field->size); break; case PRINT_FLAGS: case PRINT_SYMBOL: case PRINT_HEX: break; case PRINT_TYPE: val = eval_num_arg(data, size, event, arg->typecast.item); return eval_type(val, arg, 0); case PRINT_STRING: case PRINT_BSTRING: case PRINT_BITMASK: return 0; case PRINT_FUNC: { struct trace_seq s; trace_seq_init(&s); val = process_defined_func(&s, data, size, event, arg); trace_seq_destroy(&s); return val; } case PRINT_OP: if (strcmp(arg->op.op, "[") == 0) { /* * Arrays are special, since we don't want * to read the arg as is. */ right = eval_num_arg(data, size, event, arg->op.right); /* handle typecasts */ larg = arg->op.left; while (larg->type == PRINT_TYPE) { if (!typearg) typearg = larg; larg = larg->typecast.item; } /* Default to long size */ field_size = pevent->long_size; switch (larg->type) { case PRINT_DYNAMIC_ARRAY: offset = pevent_read_number(pevent, data + larg->dynarray.field->offset, larg->dynarray.field->size); if (larg->dynarray.field->elementsize) field_size = larg->dynarray.field->elementsize; /* * The actual length of the dynamic array is stored * in the top half of the field, and the offset * is in the bottom half of the 32 bit field. */ offset &= 0xffff; offset += right; break; case PRINT_FIELD: if (!larg->field.field) { larg->field.field = pevent_find_any_field(event, larg->field.name); if (!larg->field.field) { arg = larg; goto out_warning_field; } } field_size = larg->field.field->elementsize; offset = larg->field.field->offset + right * larg->field.field->elementsize; break; default: goto default_op; /* oops, all bets off */ } val = pevent_read_number(pevent, data + offset, field_size); if (typearg) val = eval_type(val, typearg, 1); break; } else if (strcmp(arg->op.op, "?") == 0) { left = eval_num_arg(data, size, event, arg->op.left); arg = arg->op.right; if (left) val = eval_num_arg(data, size, event, arg->op.left); else val = eval_num_arg(data, size, event, arg->op.right); break; } default_op: left = eval_num_arg(data, size, event, arg->op.left); right = eval_num_arg(data, size, event, arg->op.right); switch (arg->op.op[0]) { case '!': switch (arg->op.op[1]) { case 0: val = !right; break; case '=': val = left != right; break; default: goto out_warning_op; } break; case '~': val = ~right; break; case '|': if (arg->op.op[1]) val = left || right; else val = left | right; break; case '&': if (arg->op.op[1]) val = left && right; else val = left & right; break; case '<': switch (arg->op.op[1]) { case 0: val = left < right; break; case '<': val = left << right; break; case '=': val = left <= right; break; default: goto out_warning_op; } break; case '>': switch (arg->op.op[1]) { case 0: val = left > right; break; case '>': val = left >> right; break; case '=': val = left >= right; break; default: goto out_warning_op; } break; case '=': if (arg->op.op[1] != '=') goto out_warning_op; val = left == right; break; case '-': val = left - right; break; case '+': val = left + right; break; case '/': val = left / right; break; case '*': val = left * right; break; default: goto out_warning_op; } break; case PRINT_DYNAMIC_ARRAY: /* Without [], we pass the address to the dynamic data */ offset = pevent_read_number(pevent, data + arg->dynarray.field->offset, arg->dynarray.field->size); /* * The actual length of the dynamic array is stored * in the top half of the field, and the offset * is in the bottom half of the 32 bit field. */ offset &= 0xffff; val = (unsigned long long)((unsigned long)data + offset); break; default: /* not sure what to do there */ return 0; } return val; out_warning_op: do_warning_event(event, "%s: unknown op '%s'", __func__, arg->op.op); return 0; out_warning_field: do_warning_event(event, "%s: field %s not found", __func__, arg->field.name); return 0; } struct flag { const char *name; unsigned long long value; }; static const struct flag flags[] = { { "HI_SOFTIRQ", 0 }, { "TIMER_SOFTIRQ", 1 }, { "NET_TX_SOFTIRQ", 2 }, { "NET_RX_SOFTIRQ", 3 }, { "BLOCK_SOFTIRQ", 4 }, { "BLOCK_IOPOLL_SOFTIRQ", 5 }, { "TASKLET_SOFTIRQ", 6 }, { "SCHED_SOFTIRQ", 7 }, { "HRTIMER_SOFTIRQ", 8 }, { "RCU_SOFTIRQ", 9 }, { "HRTIMER_NORESTART", 0 }, { "HRTIMER_RESTART", 1 }, }; static unsigned long long eval_flag(const char *flag) { int i; /* * Some flags in the format files do not get converted. * If the flag is not numeric, see if it is something that * we already know about. */ if (isdigit(flag[0])) return strtoull(flag, NULL, 0); for (i = 0; i < (int)(sizeof(flags)/sizeof(flags[0])); i++) if (strcmp(flags[i].name, flag) == 0) return flags[i].value; return 0; } static void print_str_to_seq(struct trace_seq *s, const char *format, int len_arg, const char *str) { if (len_arg >= 0) trace_seq_printf(s, format, len_arg, str); else trace_seq_printf(s, format, str); } static void print_bitmask_to_seq(struct pevent *pevent, struct trace_seq *s, const char *format, int len_arg, const void *data, int size) { int nr_bits = size * 8; int str_size = (nr_bits + 3) / 4; int len = 0; char buf[3]; char *str; int index; int i; /* * The kernel likes to put in commas every 32 bits, we * can do the same. */ str_size += (nr_bits - 1) / 32; str = malloc(str_size + 1); if (!str) { do_warning("%s: not enough memory!", __func__); return; } str[str_size] = 0; /* Start out with -2 for the two chars per byte */ for (i = str_size - 2; i >= 0; i -= 2) { /* * data points to a bit mask of size bytes. * In the kernel, this is an array of long words, thus * endianess is very important. */ if (pevent->file_bigendian) index = size - (len + 1); else index = len; snprintf(buf, 3, "%02x", *((unsigned char *)data + index)); memcpy(str + i, buf, 2); len++; if (!(len & 3) && i > 0) { i--; str[i] = ','; } } if (len_arg >= 0) trace_seq_printf(s, format, len_arg, str); else trace_seq_printf(s, format, str); free(str); } static void print_str_arg(struct trace_seq *s, void *data, int size, struct event_format *event, const char *format, int len_arg, struct print_arg *arg) { struct pevent *pevent = event->pevent; struct print_flag_sym *flag; struct format_field *field; struct printk_map *printk; unsigned long long val, fval; unsigned long addr; char *str; unsigned char *hex; int print; int i, len; switch (arg->type) { case PRINT_NULL: /* ?? */ return; case PRINT_ATOM: print_str_to_seq(s, format, len_arg, arg->atom.atom); return; case PRINT_FIELD: field = arg->field.field; if (!field) { field = pevent_find_any_field(event, arg->field.name); if (!field) { str = arg->field.name; goto out_warning_field; } arg->field.field = field; } /* Zero sized fields, mean the rest of the data */ len = field->size ? : size - field->offset; /* * Some events pass in pointers. If this is not an array * and the size is the same as long_size, assume that it * is a pointer. */ if (!(field->flags & FIELD_IS_ARRAY) && field->size == pevent->long_size) { addr = *(unsigned long *)(data + field->offset); /* Check if it matches a print format */ printk = find_printk(pevent, addr); if (printk) trace_seq_puts(s, printk->printk); else trace_seq_printf(s, "%lx", addr); break; } str = malloc(len + 1); if (!str) { do_warning_event(event, "%s: not enough memory!", __func__); return; } memcpy(str, data + field->offset, len); str[len] = 0; print_str_to_seq(s, format, len_arg, str); free(str); break; case PRINT_FLAGS: val = eval_num_arg(data, size, event, arg->flags.field); print = 0; for (flag = arg->flags.flags; flag; flag = flag->next) { fval = eval_flag(flag->value); if (!val && !fval) { print_str_to_seq(s, format, len_arg, flag->str); break; } if (fval && (val & fval) == fval) { if (print && arg->flags.delim) trace_seq_puts(s, arg->flags.delim); print_str_to_seq(s, format, len_arg, flag->str); print = 1; val &= ~fval; } } break; case PRINT_SYMBOL: val = eval_num_arg(data, size, event, arg->symbol.field); for (flag = arg->symbol.symbols; flag; flag = flag->next) { fval = eval_flag(flag->value); if (val == fval) { print_str_to_seq(s, format, len_arg, flag->str); break; } } break; case PRINT_HEX: if (arg->hex.field->type == PRINT_DYNAMIC_ARRAY) { unsigned long offset; offset = pevent_read_number(pevent, data + arg->hex.field->dynarray.field->offset, arg->hex.field->dynarray.field->size); hex = data + (offset & 0xffff); } else { field = arg->hex.field->field.field; if (!field) { str = arg->hex.field->field.name; field = pevent_find_any_field(event, str); if (!field) goto out_warning_field; arg->hex.field->field.field = field; } hex = data + field->offset; } len = eval_num_arg(data, size, event, arg->hex.size); for (i = 0; i < len; i++) { if (i) trace_seq_putc(s, ' '); trace_seq_printf(s, "%02x", hex[i]); } break; case PRINT_TYPE: break; case PRINT_STRING: { int str_offset; if (arg->string.offset == -1) { struct format_field *f; f = pevent_find_any_field(event, arg->string.string); arg->string.offset = f->offset; } str_offset = data2host4(pevent, data + arg->string.offset); str_offset &= 0xffff; print_str_to_seq(s, format, len_arg, ((char *)data) + str_offset); break; } case PRINT_BSTRING: print_str_to_seq(s, format, len_arg, arg->string.string); break; case PRINT_BITMASK: { int bitmask_offset; int bitmask_size; if (arg->bitmask.offset == -1) { struct format_field *f; f = pevent_find_any_field(event, arg->bitmask.bitmask); arg->bitmask.offset = f->offset; } bitmask_offset = data2host4(pevent, data + arg->bitmask.offset); bitmask_size = bitmask_offset >> 16; bitmask_offset &= 0xffff; print_bitmask_to_seq(pevent, s, format, len_arg, data + bitmask_offset, bitmask_size); break; } case PRINT_OP: /* * The only op for string should be ? : */ if (arg->op.op[0] != '?') return; val = eval_num_arg(data, size, event, arg->op.left); if (val) print_str_arg(s, data, size, event, format, len_arg, arg->op.right->op.left); else print_str_arg(s, data, size, event, format, len_arg, arg->op.right->op.right); break; case PRINT_FUNC: process_defined_func(s, data, size, event, arg); break; default: /* well... */ break; } return; out_warning_field: do_warning_event(event, "%s: field %s not found", __func__, arg->field.name); } static unsigned long long process_defined_func(struct trace_seq *s, void *data, int size, struct event_format *event, struct print_arg *arg) { struct pevent_function_handler *func_handle = arg->func.func; struct pevent_func_params *param; unsigned long long *args; unsigned long long ret; struct print_arg *farg; struct trace_seq str; struct save_str { struct save_str *next; char *str; } *strings = NULL, *string; int i; if (!func_handle->nr_args) { ret = (*func_handle->func)(s, NULL); goto out; } farg = arg->func.args; param = func_handle->params; ret = ULLONG_MAX; args = malloc(sizeof(*args) * func_handle->nr_args); if (!args) goto out; for (i = 0; i < func_handle->nr_args; i++) { switch (param->type) { case PEVENT_FUNC_ARG_INT: case PEVENT_FUNC_ARG_LONG: case PEVENT_FUNC_ARG_PTR: args[i] = eval_num_arg(data, size, event, farg); break; case PEVENT_FUNC_ARG_STRING: trace_seq_init(&str); print_str_arg(&str, data, size, event, "%s", -1, farg); trace_seq_terminate(&str); string = malloc(sizeof(*string)); if (!string) { do_warning_event(event, "%s(%d): malloc str", __func__, __LINE__); goto out_free; } string->next = strings; string->str = strdup(str.buffer); if (!string->str) { free(string); do_warning_event(event, "%s(%d): malloc str", __func__, __LINE__); goto out_free; } args[i] = (uintptr_t)string->str; strings = string; trace_seq_destroy(&str); break; default: /* * Something went totally wrong, this is not * an input error, something in this code broke. */ do_warning_event(event, "Unexpected end of arguments\n"); goto out_free; } farg = farg->next; param = param->next; } ret = (*func_handle->func)(s, args); out_free: free(args); while (strings) { string = strings; strings = string->next; free(string->str); free(string); } out: /* TBD : handle return type here */ return ret; } static void free_args(struct print_arg *args) { struct print_arg *next; while (args) { next = args->next; free_arg(args); args = next; } } static struct print_arg *make_bprint_args(char *fmt, void *data, int size, struct event_format *event) { struct pevent *pevent = event->pevent; struct format_field *field, *ip_field; struct print_arg *args, *arg, **next; unsigned long long ip, val; char *ptr; void *bptr; int vsize; field = pevent->bprint_buf_field; ip_field = pevent->bprint_ip_field; if (!field) { field = pevent_find_field(event, "buf"); if (!field) { do_warning_event(event, "can't find buffer field for binary printk"); return NULL; } ip_field = pevent_find_field(event, "ip"); if (!ip_field) { do_warning_event(event, "can't find ip field for binary printk"); return NULL; } pevent->bprint_buf_field = field; pevent->bprint_ip_field = ip_field; } ip = pevent_read_number(pevent, data + ip_field->offset, ip_field->size); /* * The first arg is the IP pointer. */ args = alloc_arg(); if (!args) { do_warning_event(event, "%s(%d): not enough memory!", __func__, __LINE__); return NULL; } arg = args; arg->next = NULL; next = &arg->next; arg->type = PRINT_ATOM; if (asprintf(&arg->atom.atom, "%lld", ip) < 0) goto out_free; /* skip the first "%pf: " */ for (ptr = fmt + 5, bptr = data + field->offset; bptr < data + size && *ptr; ptr++) { int ls = 0; if (*ptr == '%') { process_again: ptr++; switch (*ptr) { case '%': break; case 'l': ls++; goto process_again; case 'L': ls = 2; goto process_again; case '0' ... '9': goto process_again; case '.': goto process_again; case 'z': case 'Z': ls = 1; goto process_again; case 'p': ls = 1; /* fall through */ case 'd': case 'u': case 'x': case 'i': switch (ls) { case 0: vsize = 4; break; case 1: vsize = pevent->long_size; break; case 2: vsize = 8; break; default: vsize = ls; /* ? */ break; } /* fall through */ case '*': if (*ptr == '*') vsize = 4; /* the pointers are always 4 bytes aligned */ bptr = (void *)(((unsigned long)bptr + 3) & ~3); val = pevent_read_number(pevent, bptr, vsize); bptr += vsize; arg = alloc_arg(); if (!arg) { do_warning_event(event, "%s(%d): not enough memory!", __func__, __LINE__); goto out_free; } arg->next = NULL; arg->type = PRINT_ATOM; if (asprintf(&arg->atom.atom, "%lld", val) < 0) { free(arg); goto out_free; } *next = arg; next = &arg->next; /* * The '*' case means that an arg is used as the length. * We need to continue to figure out for what. */ if (*ptr == '*') goto process_again; break; case 's': arg = alloc_arg(); if (!arg) { do_warning_event(event, "%s(%d): not enough memory!", __func__, __LINE__); goto out_free; } arg->next = NULL; arg->type = PRINT_BSTRING; arg->string.string = strdup(bptr); if (!arg->string.string) goto out_free; bptr += strlen(bptr) + 1; *next = arg; next = &arg->next; default: break; } } } return args; out_free: free_args(args); return NULL; } static char * get_bprint_format(void *data, int size __maybe_unused, struct event_format *event) { struct pevent *pevent = event->pevent; unsigned long long addr; struct format_field *field; struct printk_map *printk; char *format; field = pevent->bprint_fmt_field; if (!field) { field = pevent_find_field(event, "fmt"); if (!field) { do_warning_event(event, "can't find format field for binary printk"); return NULL; } pevent->bprint_fmt_field = field; } addr = pevent_read_number(pevent, data + field->offset, field->size); printk = find_printk(pevent, addr); if (!printk) { if (asprintf(&format, "%%pf: (NO FORMAT FOUND at %llx)\n", addr) < 0) return NULL; return format; } if (asprintf(&format, "%s: %s", "%pf", printk->printk) < 0) return NULL; return format; } static void print_mac_arg(struct trace_seq *s, int mac, void *data, int size, struct event_format *event, struct print_arg *arg) { unsigned char *buf; const char *fmt = "%.2x:%.2x:%.2x:%.2x:%.2x:%.2x"; if (arg->type == PRINT_FUNC) { process_defined_func(s, data, size, event, arg); return; } if (arg->type != PRINT_FIELD) { trace_seq_printf(s, "ARG TYPE NOT FIELD BUT %d", arg->type); return; } if (mac == 'm') fmt = "%.2x%.2x%.2x%.2x%.2x%.2x"; if (!arg->field.field) { arg->field.field = pevent_find_any_field(event, arg->field.name); if (!arg->field.field) { do_warning_event(event, "%s: field %s not found", __func__, arg->field.name); return; } } if (arg->field.field->size != 6) { trace_seq_printf(s, "INVALIDMAC"); return; } buf = data + arg->field.field->offset; trace_seq_printf(s, fmt, buf[0], buf[1], buf[2], buf[3], buf[4], buf[5]); } static void print_ip4_addr(struct trace_seq *s, char i, unsigned char *buf) { const char *fmt; if (i == 'i') fmt = "%03d.%03d.%03d.%03d"; else fmt = "%d.%d.%d.%d"; trace_seq_printf(s, fmt, buf[0], buf[1], buf[2], buf[3]); } static inline bool ipv6_addr_v4mapped(const struct in6_addr *a) { return ((unsigned long)(a->s6_addr32[0] | a->s6_addr32[1]) | (unsigned long)(a->s6_addr32[2] ^ htonl(0x0000ffff))) == 0UL; } static inline bool ipv6_addr_is_isatap(const struct in6_addr *addr) { return (addr->s6_addr32[2] | htonl(0x02000000)) == htonl(0x02005EFE); } static void print_ip6c_addr(struct trace_seq *s, unsigned char *addr) { int i, j, range; unsigned char zerolength[8]; int longest = 1; int colonpos = -1; uint16_t word; uint8_t hi, lo; bool needcolon = false; bool useIPv4; struct in6_addr in6; memcpy(&in6, addr, sizeof(struct in6_addr)); useIPv4 = ipv6_addr_v4mapped(&in6) || ipv6_addr_is_isatap(&in6); memset(zerolength, 0, sizeof(zerolength)); if (useIPv4) range = 6; else range = 8; /* find position of longest 0 run */ for (i = 0; i < range; i++) { for (j = i; j < range; j++) { if (in6.s6_addr16[j] != 0) break; zerolength[i]++; } } for (i = 0; i < range; i++) { if (zerolength[i] > longest) { longest = zerolength[i]; colonpos = i; } } if (longest == 1) /* don't compress a single 0 */ colonpos = -1; /* emit address */ for (i = 0; i < range; i++) { if (i == colonpos) { if (needcolon || i == 0) trace_seq_printf(s, ":"); trace_seq_printf(s, ":"); needcolon = false; i += longest - 1; continue; } if (needcolon) { trace_seq_printf(s, ":"); needcolon = false; } /* hex u16 without leading 0s */ word = ntohs(in6.s6_addr16[i]); hi = word >> 8; lo = word & 0xff; if (hi) trace_seq_printf(s, "%x%02x", hi, lo); else trace_seq_printf(s, "%x", lo); needcolon = true; } if (useIPv4) { if (needcolon) trace_seq_printf(s, ":"); print_ip4_addr(s, 'I', &in6.s6_addr[12]); } return; } static void print_ip6_addr(struct trace_seq *s, char i, unsigned char *buf) { int j; for (j = 0; j < 16; j += 2) { trace_seq_printf(s, "%02x%02x", buf[j], buf[j+1]); if (i == 'I' && j < 14) trace_seq_printf(s, ":"); } } /* * %pi4 print an IPv4 address with leading zeros * %pI4 print an IPv4 address without leading zeros * %pi6 print an IPv6 address without colons * %pI6 print an IPv6 address with colons * %pI6c print an IPv6 address in compressed form with colons * %pISpc print an IP address based on sockaddr; p adds port. */ static int print_ipv4_arg(struct trace_seq *s, const char *ptr, char i, void *data, int size, struct event_format *event, struct print_arg *arg) { unsigned char *buf; if (arg->type == PRINT_FUNC) { process_defined_func(s, data, size, event, arg); return 0; } if (arg->type != PRINT_FIELD) { trace_seq_printf(s, "ARG TYPE NOT FIELD BUT %d", arg->type); return 0; } if (!arg->field.field) { arg->field.field = pevent_find_any_field(event, arg->field.name); if (!arg->field.field) { do_warning("%s: field %s not found", __func__, arg->field.name); return 0; } } buf = data + arg->field.field->offset; if (arg->field.field->size != 4) { trace_seq_printf(s, "INVALIDIPv4"); return 0; } print_ip4_addr(s, i, buf); return 0; } static int print_ipv6_arg(struct trace_seq *s, const char *ptr, char i, void *data, int size, struct event_format *event, struct print_arg *arg) { char have_c = 0; unsigned char *buf; int rc = 0; /* pI6c */ if (i == 'I' && *ptr == 'c') { have_c = 1; ptr++; rc++; } if (arg->type == PRINT_FUNC) { process_defined_func(s, data, size, event, arg); return rc; } if (arg->type != PRINT_FIELD) { trace_seq_printf(s, "ARG TYPE NOT FIELD BUT %d", arg->type); return rc; } if (!arg->field.field) { arg->field.field = pevent_find_any_field(event, arg->field.name); if (!arg->field.field) { do_warning("%s: field %s not found", __func__, arg->field.name); return rc; } } buf = data + arg->field.field->offset; if (arg->field.field->size != 16) { trace_seq_printf(s, "INVALIDIPv6"); return rc; } if (have_c) print_ip6c_addr(s, buf); else print_ip6_addr(s, i, buf); return rc; } static int print_ipsa_arg(struct trace_seq *s, const char *ptr, char i, void *data, int size, struct event_format *event, struct print_arg *arg) { char have_c = 0, have_p = 0; unsigned char *buf; struct sockaddr_storage *sa; int rc = 0; /* pISpc */ if (i == 'I') { if (*ptr == 'p') { have_p = 1; ptr++; rc++; } if (*ptr == 'c') { have_c = 1; ptr++; rc++; } } if (arg->type == PRINT_FUNC) { process_defined_func(s, data, size, event, arg); return rc; } if (arg->type != PRINT_FIELD) { trace_seq_printf(s, "ARG TYPE NOT FIELD BUT %d", arg->type); return rc; } if (!arg->field.field) { arg->field.field = pevent_find_any_field(event, arg->field.name); if (!arg->field.field) { do_warning("%s: field %s not found", __func__, arg->field.name); return rc; } } sa = (struct sockaddr_storage *) (data + arg->field.field->offset); if (sa->ss_family == AF_INET) { struct sockaddr_in *sa4 = (struct sockaddr_in *) sa; if (arg->field.field->size < sizeof(struct sockaddr_in)) { trace_seq_printf(s, "INVALIDIPv4"); return rc; } print_ip4_addr(s, i, (unsigned char *) &sa4->sin_addr); if (have_p) trace_seq_printf(s, ":%d", ntohs(sa4->sin_port)); } else if (sa->ss_family == AF_INET6) { struct sockaddr_in6 *sa6 = (struct sockaddr_in6 *) sa; if (arg->field.field->size < sizeof(struct sockaddr_in6)) { trace_seq_printf(s, "INVALIDIPv6"); return rc; } if (have_p) trace_seq_printf(s, "["); buf = (unsigned char *) &sa6->sin6_addr; if (have_c) print_ip6c_addr(s, buf); else print_ip6_addr(s, i, buf); if (have_p) trace_seq_printf(s, "]:%d", ntohs(sa6->sin6_port)); } return rc; } static int print_ip_arg(struct trace_seq *s, const char *ptr, void *data, int size, struct event_format *event, struct print_arg *arg) { char i = *ptr; /* 'i' or 'I' */ char ver; int rc = 0; ptr++; rc++; ver = *ptr; ptr++; rc++; switch (ver) { case '4': rc += print_ipv4_arg(s, ptr, i, data, size, event, arg); break; case '6': rc += print_ipv6_arg(s, ptr, i, data, size, event, arg); break; case 'S': rc += print_ipsa_arg(s, ptr, i, data, size, event, arg); break; default: return 0; } return rc; } static int is_printable_array(char *p, unsigned int len) { unsigned int i; for (i = 0; i < len && p[i]; i++) if (!isprint(p[i]) && !isspace(p[i])) return 0; return 1; } static void print_event_fields(struct trace_seq *s, void *data, int size __maybe_unused, struct event_format *event) { struct format_field *field; unsigned long long val; unsigned int offset, len, i; field = event->format.fields; while (field) { trace_seq_printf(s, " %s=", field->name); if (field->flags & FIELD_IS_ARRAY) { offset = field->offset; len = field->size; if (field->flags & FIELD_IS_DYNAMIC) { val = pevent_read_number(event->pevent, data + offset, len); offset = val; len = offset >> 16; offset &= 0xffff; } if (field->flags & FIELD_IS_STRING && is_printable_array(data + offset, len)) { trace_seq_printf(s, "%s", (char *)data + offset); } else { trace_seq_puts(s, "ARRAY["); for (i = 0; i < len; i++) { if (i) trace_seq_puts(s, ", "); trace_seq_printf(s, "%02x", *((unsigned char *)data + offset + i)); } trace_seq_putc(s, ']'); field->flags &= ~FIELD_IS_STRING; } } else { val = pevent_read_number(event->pevent, data + field->offset, field->size); if (field->flags & FIELD_IS_POINTER) { trace_seq_printf(s, "0x%llx", val); } else if (field->flags & FIELD_IS_SIGNED) { switch (field->size) { case 4: /* * If field is long then print it in hex. * A long usually stores pointers. */ if (field->flags & FIELD_IS_LONG) trace_seq_printf(s, "0x%x", (int)val); else trace_seq_printf(s, "%d", (int)val); break; case 2: trace_seq_printf(s, "%2d", (short)val); break; case 1: trace_seq_printf(s, "%1d", (char)val); break; default: trace_seq_printf(s, "%lld", val); } } else { if (field->flags & FIELD_IS_LONG) trace_seq_printf(s, "0x%llx", val); else trace_seq_printf(s, "%llu", val); } } field = field->next; } } static void pretty_print(struct trace_seq *s, void *data, int size, struct event_format *event) { struct pevent *pevent = event->pevent; struct print_fmt *print_fmt = &event->print_fmt; struct print_arg *arg = print_fmt->args; struct print_arg *args = NULL; const char *ptr = print_fmt->format; unsigned long long val; struct func_map *func; const char *saveptr; struct trace_seq p; char *bprint_fmt = NULL; char format[32]; int show_func; int len_as_arg; int len_arg; int len; int ls; if (event->flags & EVENT_FL_FAILED) { trace_seq_printf(s, "[FAILED TO PARSE]"); print_event_fields(s, data, size, event); return; } if (event->flags & EVENT_FL_ISBPRINT) { bprint_fmt = get_bprint_format(data, size, event); args = make_bprint_args(bprint_fmt, data, size, event); arg = args; ptr = bprint_fmt; } for (; *ptr; ptr++) { ls = 0; if (*ptr == '\\') { ptr++; switch (*ptr) { case 'n': trace_seq_putc(s, '\n'); break; case 't': trace_seq_putc(s, '\t'); break; case 'r': trace_seq_putc(s, '\r'); break; case '\\': trace_seq_putc(s, '\\'); break; default: trace_seq_putc(s, *ptr); break; } } else if (*ptr == '%') { saveptr = ptr; show_func = 0; len_as_arg = 0; cont_process: ptr++; switch (*ptr) { case '%': trace_seq_putc(s, '%'); break; case '#': /* FIXME: need to handle properly */ goto cont_process; case 'h': ls--; goto cont_process; case 'l': ls++; goto cont_process; case 'L': ls = 2; goto cont_process; case '*': /* The argument is the length. */ if (!arg) { do_warning_event(event, "no argument match"); event->flags |= EVENT_FL_FAILED; goto out_failed; } len_arg = eval_num_arg(data, size, event, arg); len_as_arg = 1; arg = arg->next; goto cont_process; case '.': case 'z': case 'Z': case '0' ... '9': goto cont_process; case 'p': if (pevent->long_size == 4) ls = 1; else ls = 2; if (*(ptr+1) == 'F' || *(ptr+1) == 'f') { ptr++; show_func = *ptr; } else if (*(ptr+1) == 'M' || *(ptr+1) == 'm') { print_mac_arg(s, *(ptr+1), data, size, event, arg); ptr++; arg = arg->next; break; } else if (*(ptr+1) == 'I' || *(ptr+1) == 'i') { int n; n = print_ip_arg(s, ptr+1, data, size, event, arg); if (n > 0) { ptr += n; arg = arg->next; break; } } /* fall through */ case 'd': case 'i': case 'x': case 'X': case 'u': if (!arg) { do_warning_event(event, "no argument match"); event->flags |= EVENT_FL_FAILED; goto out_failed; } len = ((unsigned long)ptr + 1) - (unsigned long)saveptr; /* should never happen */ if (len > 31) { do_warning_event(event, "bad format!"); event->flags |= EVENT_FL_FAILED; len = 31; } memcpy(format, saveptr, len); format[len] = 0; val = eval_num_arg(data, size, event, arg); arg = arg->next; if (show_func) { func = find_func(pevent, val); if (func) { trace_seq_puts(s, func->func); if (show_func == 'F') trace_seq_printf(s, "+0x%llx", val - func->addr); break; } } if (pevent->long_size == 8 && ls && sizeof(long) != 8) { char *p; ls = 2; /* make %l into %ll */ p = strchr(format, 'l'); if (p) memmove(p+1, p, strlen(p)+1); else if (strcmp(format, "%p") == 0) strcpy(format, "0x%llx"); } switch (ls) { case -2: if (len_as_arg) trace_seq_printf(s, format, len_arg, (char)val); else trace_seq_printf(s, format, (char)val); break; case -1: if (len_as_arg) trace_seq_printf(s, format, len_arg, (short)val); else trace_seq_printf(s, format, (short)val); break; case 0: if (len_as_arg) trace_seq_printf(s, format, len_arg, (int)val); else trace_seq_printf(s, format, (int)val); break; case 1: if (len_as_arg) trace_seq_printf(s, format, len_arg, (long)val); else trace_seq_printf(s, format, (long)val); break; case 2: if (len_as_arg) trace_seq_printf(s, format, len_arg, (long long)val); else trace_seq_printf(s, format, (long long)val); break; default: do_warning_event(event, "bad count (%d)", ls); event->flags |= EVENT_FL_FAILED; } break; case 's': if (!arg) { do_warning_event(event, "no matching argument"); event->flags |= EVENT_FL_FAILED; goto out_failed; } len = ((unsigned long)ptr + 1) - (unsigned long)saveptr; /* should never happen */ if (len > 31) { do_warning_event(event, "bad format!"); event->flags |= EVENT_FL_FAILED; len = 31; } memcpy(format, saveptr, len); format[len] = 0; if (!len_as_arg) len_arg = -1; /* Use helper trace_seq */ trace_seq_init(&p); print_str_arg(&p, data, size, event, format, len_arg, arg); trace_seq_terminate(&p); trace_seq_puts(s, p.buffer); trace_seq_destroy(&p); arg = arg->next; break; default: trace_seq_printf(s, ">%c<", *ptr); } } else trace_seq_putc(s, *ptr); } if (event->flags & EVENT_FL_FAILED) { out_failed: trace_seq_printf(s, "[FAILED TO PARSE]"); } if (args) { free_args(args); free(bprint_fmt); } } /** * pevent_data_lat_fmt - parse the data for the latency format * @pevent: a handle to the pevent * @s: the trace_seq to write to * @record: the record to read from * * This parses out the Latency format (interrupts disabled, * need rescheduling, in hard/soft interrupt, preempt count * and lock depth) and places it into the trace_seq. */ void pevent_data_lat_fmt(struct pevent *pevent, struct trace_seq *s, struct pevent_record *record) { static int check_lock_depth = 1; static int check_migrate_disable = 1; static int lock_depth_exists; static int migrate_disable_exists; unsigned int lat_flags; unsigned int pc; int lock_depth; int migrate_disable; int hardirq; int softirq; void *data = record->data; lat_flags = parse_common_flags(pevent, data); pc = parse_common_pc(pevent, data); /* lock_depth may not always exist */ if (lock_depth_exists) lock_depth = parse_common_lock_depth(pevent, data); else if (check_lock_depth) { lock_depth = parse_common_lock_depth(pevent, data); if (lock_depth < 0) check_lock_depth = 0; else lock_depth_exists = 1; } /* migrate_disable may not always exist */ if (migrate_disable_exists) migrate_disable = parse_common_migrate_disable(pevent, data); else if (check_migrate_disable) { migrate_disable = parse_common_migrate_disable(pevent, data); if (migrate_disable < 0) check_migrate_disable = 0; else migrate_disable_exists = 1; } hardirq = lat_flags & TRACE_FLAG_HARDIRQ; softirq = lat_flags & TRACE_FLAG_SOFTIRQ; trace_seq_printf(s, "%c%c%c", (lat_flags & TRACE_FLAG_IRQS_OFF) ? 'd' : (lat_flags & TRACE_FLAG_IRQS_NOSUPPORT) ? 'X' : '.', (lat_flags & TRACE_FLAG_NEED_RESCHED) ? 'N' : '.', (hardirq && softirq) ? 'H' : hardirq ? 'h' : softirq ? 's' : '.'); if (pc) trace_seq_printf(s, "%x", pc); else trace_seq_putc(s, '.'); if (migrate_disable_exists) { if (migrate_disable < 0) trace_seq_putc(s, '.'); else trace_seq_printf(s, "%d", migrate_disable); } if (lock_depth_exists) { if (lock_depth < 0) trace_seq_putc(s, '.'); else trace_seq_printf(s, "%d", lock_depth); } trace_seq_terminate(s); } /** * pevent_data_type - parse out the given event type * @pevent: a handle to the pevent * @rec: the record to read from * * This returns the event id from the @rec. */ int pevent_data_type(struct pevent *pevent, struct pevent_record *rec) { return trace_parse_common_type(pevent, rec->data); } /** * pevent_data_event_from_type - find the event by a given type * @pevent: a handle to the pevent * @type: the type of the event. * * This returns the event form a given @type; */ struct event_format *pevent_data_event_from_type(struct pevent *pevent, int type) { return pevent_find_event(pevent, type); } /** * pevent_data_pid - parse the PID from raw data * @pevent: a handle to the pevent * @rec: the record to parse * * This returns the PID from a raw data. */ int pevent_data_pid(struct pevent *pevent, struct pevent_record *rec) { return parse_common_pid(pevent, rec->data); } /** * pevent_data_comm_from_pid - return the command line from PID * @pevent: a handle to the pevent * @pid: the PID of the task to search for * * This returns a pointer to the command line that has the given * @pid. */ const char *pevent_data_comm_from_pid(struct pevent *pevent, int pid) { const char *comm; comm = find_cmdline(pevent, pid); return comm; } static struct cmdline * pid_from_cmdlist(struct pevent *pevent, const char *comm, struct cmdline *next) { struct cmdline_list *cmdlist = (struct cmdline_list *)next; if (cmdlist) cmdlist = cmdlist->next; else cmdlist = pevent->cmdlist; while (cmdlist && strcmp(cmdlist->comm, comm) != 0) cmdlist = cmdlist->next; return (struct cmdline *)cmdlist; } /** * pevent_data_pid_from_comm - return the pid from a given comm * @pevent: a handle to the pevent * @comm: the cmdline to find the pid from * @next: the cmdline structure to find the next comm * * This returns the cmdline structure that holds a pid for a given * comm, or NULL if none found. As there may be more than one pid for * a given comm, the result of this call can be passed back into * a recurring call in the @next paramater, and then it will find the * next pid. * Also, it does a linear seach, so it may be slow. */ struct cmdline *pevent_data_pid_from_comm(struct pevent *pevent, const char *comm, struct cmdline *next) { struct cmdline *cmdline; /* * If the cmdlines have not been converted yet, then use * the list. */ if (!pevent->cmdlines) return pid_from_cmdlist(pevent, comm, next); if (next) { /* * The next pointer could have been still from * a previous call before cmdlines were created */ if (next < pevent->cmdlines || next >= pevent->cmdlines + pevent->cmdline_count) next = NULL; else cmdline = next++; } if (!next) cmdline = pevent->cmdlines; while (cmdline < pevent->cmdlines + pevent->cmdline_count) { if (strcmp(cmdline->comm, comm) == 0) return cmdline; cmdline++; } return NULL; } /** * pevent_cmdline_pid - return the pid associated to a given cmdline * @cmdline: The cmdline structure to get the pid from * * Returns the pid for a give cmdline. If @cmdline is NULL, then * -1 is returned. */ int pevent_cmdline_pid(struct pevent *pevent, struct cmdline *cmdline) { struct cmdline_list *cmdlist = (struct cmdline_list *)cmdline; if (!cmdline) return -1; /* * If cmdlines have not been created yet, or cmdline is * not part of the array, then treat it as a cmdlist instead. */ if (!pevent->cmdlines || cmdline < pevent->cmdlines || cmdline >= pevent->cmdlines + pevent->cmdline_count) return cmdlist->pid; return cmdline->pid; } /** * pevent_data_comm_from_pid - parse the data into the print format * @s: the trace_seq to write to * @event: the handle to the event * @record: the record to read from * * This parses the raw @data using the given @event information and * writes the print format into the trace_seq. */ void pevent_event_info(struct trace_seq *s, struct event_format *event, struct pevent_record *record) { int print_pretty = 1; if (event->pevent->print_raw || (event->flags & EVENT_FL_PRINTRAW)) print_event_fields(s, record->data, record->size, event); else { if (event->handler && !(event->flags & EVENT_FL_NOHANDLE)) print_pretty = event->handler(s, record, event, event->context); if (print_pretty) pretty_print(s, record->data, record->size, event); } trace_seq_terminate(s); } static bool is_timestamp_in_us(char *trace_clock, bool use_trace_clock) { if (!use_trace_clock) return true; if (!strcmp(trace_clock, "local") || !strcmp(trace_clock, "global") || !strcmp(trace_clock, "uptime") || !strcmp(trace_clock, "perf")) return true; /* trace_clock is setting in tsc or counter mode */ return false; } void pevent_print_event(struct pevent *pevent, struct trace_seq *s, struct pevent_record *record, bool use_trace_clock) { static const char *spaces = " "; /* 20 spaces */ struct event_format *event; unsigned long secs; unsigned long usecs; unsigned long nsecs; const char *comm; void *data = record->data; int type; int pid; int len; int p; bool use_usec_format; use_usec_format = is_timestamp_in_us(pevent->trace_clock, use_trace_clock); if (use_usec_format) { secs = record->ts / NSECS_PER_SEC; nsecs = record->ts - secs * NSECS_PER_SEC; } if (record->size < 0) { do_warning("ug! negative record size %d", record->size); return; } type = trace_parse_common_type(pevent, data); event = pevent_find_event(pevent, type); if (!event) { do_warning("ug! no event found for type %d", type); return; } pid = parse_common_pid(pevent, data); comm = find_cmdline(pevent, pid); if (pevent->latency_format) { trace_seq_printf(s, "%8.8s-%-5d %3d", comm, pid, record->cpu); pevent_data_lat_fmt(pevent, s, record); } else trace_seq_printf(s, "%16s-%-5d [%03d]", comm, pid, record->cpu); if (use_usec_format) { if (pevent->flags & PEVENT_NSEC_OUTPUT) { usecs = nsecs; p = 9; } else { usecs = (nsecs + 500) / NSECS_PER_USEC; p = 6; } trace_seq_printf(s, " %5lu.%0*lu: %s: ", secs, p, usecs, event->name); } else trace_seq_printf(s, " %12llu: %s: ", record->ts, event->name); /* Space out the event names evenly. */ len = strlen(event->name); if (len < 20) trace_seq_printf(s, "%.*s", 20 - len, spaces); pevent_event_info(s, event, record); } static int events_id_cmp(const void *a, const void *b) { struct event_format * const * ea = a; struct event_format * const * eb = b; if ((*ea)->id < (*eb)->id) return -1; if ((*ea)->id > (*eb)->id) return 1; return 0; } static int events_name_cmp(const void *a, const void *b) { struct event_format * const * ea = a; struct event_format * const * eb = b; int res; res = strcmp((*ea)->name, (*eb)->name); if (res) return res; res = strcmp((*ea)->system, (*eb)->system); if (res) return res; return events_id_cmp(a, b); } static int events_system_cmp(const void *a, const void *b) { struct event_format * const * ea = a; struct event_format * const * eb = b; int res; res = strcmp((*ea)->system, (*eb)->system); if (res) return res; res = strcmp((*ea)->name, (*eb)->name); if (res) return res; return events_id_cmp(a, b); } struct event_format **pevent_list_events(struct pevent *pevent, enum event_sort_type sort_type) { struct event_format **events; int (*sort)(const void *a, const void *b); events = pevent->sort_events; if (events && pevent->last_type == sort_type) return events; if (!events) { events = malloc(sizeof(*events) * (pevent->nr_events + 1)); if (!events) return NULL; memcpy(events, pevent->events, sizeof(*events) * pevent->nr_events); events[pevent->nr_events] = NULL; pevent->sort_events = events; /* the internal events are sorted by id */ if (sort_type == EVENT_SORT_ID) { pevent->last_type = sort_type; return events; } } switch (sort_type) { case EVENT_SORT_ID: sort = events_id_cmp; break; case EVENT_SORT_NAME: sort = events_name_cmp; break; case EVENT_SORT_SYSTEM: sort = events_system_cmp; break; default: return events; } qsort(events, pevent->nr_events, sizeof(*events), sort); pevent->last_type = sort_type; return events; } static struct format_field ** get_event_fields(const char *type, const char *name, int count, struct format_field *list) { struct format_field **fields; struct format_field *field; int i = 0; fields = malloc(sizeof(*fields) * (count + 1)); if (!fields) return NULL; for (field = list; field; field = field->next) { fields[i++] = field; if (i == count + 1) { do_warning("event %s has more %s fields than specified", name, type); i--; break; } } if (i != count) do_warning("event %s has less %s fields than specified", name, type); fields[i] = NULL; return fields; } /** * pevent_event_common_fields - return a list of common fields for an event * @event: the event to return the common fields of. * * Returns an allocated array of fields. The last item in the array is NULL. * The array must be freed with free(). */ struct format_field **pevent_event_common_fields(struct event_format *event) { return get_event_fields("common", event->name, event->format.nr_common, event->format.common_fields); } /** * pevent_event_fields - return a list of event specific fields for an event * @event: the event to return the fields of. * * Returns an allocated array of fields. The last item in the array is NULL. * The array must be freed with free(). */ struct format_field **pevent_event_fields(struct event_format *event) { return get_event_fields("event", event->name, event->format.nr_fields, event->format.fields); } static void print_fields(struct trace_seq *s, struct print_flag_sym *field) { trace_seq_printf(s, "{ %s, %s }", field->value, field->str); if (field->next) { trace_seq_puts(s, ", "); print_fields(s, field->next); } } /* for debugging */ static void print_args(struct print_arg *args) { int print_paren = 1; struct trace_seq s; switch (args->type) { case PRINT_NULL: printf("null"); break; case PRINT_ATOM: printf("%s", args->atom.atom); break; case PRINT_FIELD: printf("REC->%s", args->field.name); break; case PRINT_FLAGS: printf("__print_flags("); print_args(args->flags.field); printf(", %s, ", args->flags.delim); trace_seq_init(&s); print_fields(&s, args->flags.flags); trace_seq_do_printf(&s); trace_seq_destroy(&s); printf(")"); break; case PRINT_SYMBOL: printf("__print_symbolic("); print_args(args->symbol.field); printf(", "); trace_seq_init(&s); print_fields(&s, args->symbol.symbols); trace_seq_do_printf(&s); trace_seq_destroy(&s); printf(")"); break; case PRINT_HEX: printf("__print_hex("); print_args(args->hex.field); printf(", "); print_args(args->hex.size); printf(")"); break; case PRINT_STRING: case PRINT_BSTRING: printf("__get_str(%s)", args->string.string); break; case PRINT_BITMASK: printf("__get_bitmask(%s)", args->bitmask.bitmask); break; case PRINT_TYPE: printf("(%s)", args->typecast.type); print_args(args->typecast.item); break; case PRINT_OP: if (strcmp(args->op.op, ":") == 0) print_paren = 0; if (print_paren) printf("("); print_args(args->op.left); printf(" %s ", args->op.op); print_args(args->op.right); if (print_paren) printf(")"); break; default: /* we should warn... */ return; } if (args->next) { printf("\n"); print_args(args->next); } } static void parse_header_field(const char *field, int *offset, int *size, int mandatory) { unsigned long long save_input_buf_ptr; unsigned long long save_input_buf_siz; char *token; int type; save_input_buf_ptr = input_buf_ptr; save_input_buf_siz = input_buf_siz; if (read_expected(EVENT_ITEM, "field") < 0) return; if (read_expected(EVENT_OP, ":") < 0) return; /* type */ if (read_expect_type(EVENT_ITEM, &token) < 0) goto fail; free_token(token); /* * If this is not a mandatory field, then test it first. */ if (mandatory) { if (read_expected(EVENT_ITEM, field) < 0) return; } else { if (read_expect_type(EVENT_ITEM, &token) < 0) goto fail; if (strcmp(token, field) != 0) goto discard; free_token(token); } if (read_expected(EVENT_OP, ";") < 0) return; if (read_expected(EVENT_ITEM, "offset") < 0) return; if (read_expected(EVENT_OP, ":") < 0) return; if (read_expect_type(EVENT_ITEM, &token) < 0) goto fail; *offset = atoi(token); free_token(token); if (read_expected(EVENT_OP, ";") < 0) return; if (read_expected(EVENT_ITEM, "size") < 0) return; if (read_expected(EVENT_OP, ":") < 0) return; if (read_expect_type(EVENT_ITEM, &token) < 0) goto fail; *size = atoi(token); free_token(token); if (read_expected(EVENT_OP, ";") < 0) return; type = read_token(&token); if (type != EVENT_NEWLINE) { /* newer versions of the kernel have a "signed" type */ if (type != EVENT_ITEM) goto fail; if (strcmp(token, "signed") != 0) goto fail; free_token(token); if (read_expected(EVENT_OP, ":") < 0) return; if (read_expect_type(EVENT_ITEM, &token)) goto fail; free_token(token); if (read_expected(EVENT_OP, ";") < 0) return; if (read_expect_type(EVENT_NEWLINE, &token)) goto fail; } fail: free_token(token); return; discard: input_buf_ptr = save_input_buf_ptr; input_buf_siz = save_input_buf_siz; *offset = 0; *size = 0; free_token(token); } /** * pevent_parse_header_page - parse the data stored in the header page * @pevent: the handle to the pevent * @buf: the buffer storing the header page format string * @size: the size of @buf * @long_size: the long size to use if there is no header * * This parses the header page format for information on the * ring buffer used. The @buf should be copied from * * /sys/kernel/debug/tracing/events/header_page */ int pevent_parse_header_page(struct pevent *pevent, char *buf, unsigned long size, int long_size) { int ignore; if (!size) { /* * Old kernels did not have header page info. * Sorry but we just use what we find here in user space. */ pevent->header_page_ts_size = sizeof(long long); pevent->header_page_size_size = long_size; pevent->header_page_data_offset = sizeof(long long) + long_size; pevent->old_format = 1; return -1; } init_input_buf(buf, size); parse_header_field("timestamp", &pevent->header_page_ts_offset, &pevent->header_page_ts_size, 1); parse_header_field("commit", &pevent->header_page_size_offset, &pevent->header_page_size_size, 1); parse_header_field("overwrite", &pevent->header_page_overwrite, &ignore, 0); parse_header_field("data", &pevent->header_page_data_offset, &pevent->header_page_data_size, 1); return 0; } static int event_matches(struct event_format *event, int id, const char *sys_name, const char *event_name) { if (id >= 0 && id != event->id) return 0; if (event_name && (strcmp(event_name, event->name) != 0)) return 0; if (sys_name && (strcmp(sys_name, event->system) != 0)) return 0; return 1; } static void free_handler(struct event_handler *handle) { free((void *)handle->sys_name); free((void *)handle->event_name); free(handle); } static int find_event_handle(struct pevent *pevent, struct event_format *event) { struct event_handler *handle, **next; for (next = &pevent->handlers; *next; next = &(*next)->next) { handle = *next; if (event_matches(event, handle->id, handle->sys_name, handle->event_name)) break; } if (!(*next)) return 0; pr_stat("overriding event (%d) %s:%s with new print handler", event->id, event->system, event->name); event->handler = handle->func; event->context = handle->context; *next = handle->next; free_handler(handle); return 1; } /** * __pevent_parse_format - parse the event format * @buf: the buffer storing the event format string * @size: the size of @buf * @sys: the system the event belongs to * * This parses the event format and creates an event structure * to quickly parse raw data for a given event. * * These files currently come from: * * /sys/kernel/debug/tracing/events/.../.../format */ enum pevent_errno __pevent_parse_format(struct event_format **eventp, struct pevent *pevent, const char *buf, unsigned long size, const char *sys) { struct event_format *event; int ret; init_input_buf(buf, size); *eventp = event = alloc_event(); if (!event) return PEVENT_ERRNO__MEM_ALLOC_FAILED; event->name = event_read_name(); if (!event->name) { /* Bad event? */ ret = PEVENT_ERRNO__MEM_ALLOC_FAILED; goto event_alloc_failed; } if (strcmp(sys, "ftrace") == 0) { event->flags |= EVENT_FL_ISFTRACE; if (strcmp(event->name, "bprint") == 0) event->flags |= EVENT_FL_ISBPRINT; } event->id = event_read_id(); if (event->id < 0) { ret = PEVENT_ERRNO__READ_ID_FAILED; /* * This isn't an allocation error actually. * But as the ID is critical, just bail out. */ goto event_alloc_failed; } event->system = strdup(sys); if (!event->system) { ret = PEVENT_ERRNO__MEM_ALLOC_FAILED; goto event_alloc_failed; } /* Add pevent to event so that it can be referenced */ event->pevent = pevent; ret = event_read_format(event); if (ret < 0) { ret = PEVENT_ERRNO__READ_FORMAT_FAILED; goto event_parse_failed; } /* * If the event has an override, don't print warnings if the event * print format fails to parse. */ if (pevent && find_event_handle(pevent, event)) show_warning = 0; ret = event_read_print(event); show_warning = 1; if (ret < 0) { ret = PEVENT_ERRNO__READ_PRINT_FAILED; goto event_parse_failed; } if (!ret && (event->flags & EVENT_FL_ISFTRACE)) { struct format_field *field; struct print_arg *arg, **list; /* old ftrace had no args */ list = &event->print_fmt.args; for (field = event->format.fields; field; field = field->next) { arg = alloc_arg(); if (!arg) { event->flags |= EVENT_FL_FAILED; return PEVENT_ERRNO__OLD_FTRACE_ARG_FAILED; } arg->type = PRINT_FIELD; arg->field.name = strdup(field->name); if (!arg->field.name) { event->flags |= EVENT_FL_FAILED; free_arg(arg); return PEVENT_ERRNO__OLD_FTRACE_ARG_FAILED; } arg->field.field = field; *list = arg; list = &arg->next; } return 0; } return 0; event_parse_failed: event->flags |= EVENT_FL_FAILED; return ret; event_alloc_failed: free(event->system); free(event->name); free(event); *eventp = NULL; return ret; } static enum pevent_errno __pevent_parse_event(struct pevent *pevent, struct event_format **eventp, const char *buf, unsigned long size, const char *sys) { int ret = __pevent_parse_format(eventp, pevent, buf, size, sys); struct event_format *event = *eventp; if (event == NULL) return ret; if (pevent && add_event(pevent, event)) { ret = PEVENT_ERRNO__MEM_ALLOC_FAILED; goto event_add_failed; } #define PRINT_ARGS 0 if (PRINT_ARGS && event->print_fmt.args) print_args(event->print_fmt.args); return 0; event_add_failed: pevent_free_format(event); return ret; } /** * pevent_parse_format - parse the event format * @pevent: the handle to the pevent * @eventp: returned format * @buf: the buffer storing the event format string * @size: the size of @buf * @sys: the system the event belongs to * * This parses the event format and creates an event structure * to quickly parse raw data for a given event. * * These files currently come from: * * /sys/kernel/debug/tracing/events/.../.../format */ enum pevent_errno pevent_parse_format(struct pevent *pevent, struct event_format **eventp, const char *buf, unsigned long size, const char *sys) { return __pevent_parse_event(pevent, eventp, buf, size, sys); } /** * pevent_parse_event - parse the event format * @pevent: the handle to the pevent * @buf: the buffer storing the event format string * @size: the size of @buf * @sys: the system the event belongs to * * This parses the event format and creates an event structure * to quickly parse raw data for a given event. * * These files currently come from: * * /sys/kernel/debug/tracing/events/.../.../format */ enum pevent_errno pevent_parse_event(struct pevent *pevent, const char *buf, unsigned long size, const char *sys) { struct event_format *event = NULL; return __pevent_parse_event(pevent, &event, buf, size, sys); } #undef _PE #define _PE(code, str) str static const char * const pevent_error_str[] = { PEVENT_ERRORS }; #undef _PE int pevent_strerror(struct pevent *pevent __maybe_unused, enum pevent_errno errnum, char *buf, size_t buflen) { int idx; const char *msg; if (errnum >= 0) { msg = strerror_r(errnum, buf, buflen); if (msg != buf) { size_t len = strlen(msg); memcpy(buf, msg, min(buflen - 1, len)); *(buf + min(buflen - 1, len)) = '\0'; } return 0; } if (errnum <= __PEVENT_ERRNO__START || errnum >= __PEVENT_ERRNO__END) return -1; idx = errnum - __PEVENT_ERRNO__START - 1; msg = pevent_error_str[idx]; snprintf(buf, buflen, "%s", msg); return 0; } int get_field_val(struct trace_seq *s, struct format_field *field, const char *name, struct pevent_record *record, unsigned long long *val, int err) { if (!field) { if (err) trace_seq_printf(s, "", name); return -1; } if (pevent_read_number_field(field, record->data, val)) { if (err) trace_seq_printf(s, " %s=INVALID", name); return -1; } return 0; } /** * pevent_get_field_raw - return the raw pointer into the data field * @s: The seq to print to on error * @event: the event that the field is for * @name: The name of the field * @record: The record with the field name. * @len: place to store the field length. * @err: print default error if failed. * * Returns a pointer into record->data of the field and places * the length of the field in @len. * * On failure, it returns NULL. */ void *pevent_get_field_raw(struct trace_seq *s, struct event_format *event, const char *name, struct pevent_record *record, int *len, int err) { struct format_field *field; void *data = record->data; unsigned offset; int dummy; if (!event) return NULL; field = pevent_find_field(event, name); if (!field) { if (err) trace_seq_printf(s, "", name); return NULL; } /* Allow @len to be NULL */ if (!len) len = &dummy; offset = field->offset; if (field->flags & FIELD_IS_DYNAMIC) { offset = pevent_read_number(event->pevent, data + offset, field->size); *len = offset >> 16; offset &= 0xffff; } else *len = field->size; return data + offset; } /** * pevent_get_field_val - find a field and return its value * @s: The seq to print to on error * @event: the event that the field is for * @name: The name of the field * @record: The record with the field name. * @val: place to store the value of the field. * @err: print default error if failed. * * Returns 0 on success -1 on field not found. */ int pevent_get_field_val(struct trace_seq *s, struct event_format *event, const char *name, struct pevent_record *record, unsigned long long *val, int err) { struct format_field *field; if (!event) return -1; field = pevent_find_field(event, name); return get_field_val(s, field, name, record, val, err); } /** * pevent_get_common_field_val - find a common field and return its value * @s: The seq to print to on error * @event: the event that the field is for * @name: The name of the field * @record: The record with the field name. * @val: place to store the value of the field. * @err: print default error if failed. * * Returns 0 on success -1 on field not found. */ int pevent_get_common_field_val(struct trace_seq *s, struct event_format *event, const char *name, struct pevent_record *record, unsigned long long *val, int err) { struct format_field *field; if (!event) return -1; field = pevent_find_common_field(event, name); return get_field_val(s, field, name, record, val, err); } /** * pevent_get_any_field_val - find a any field and return its value * @s: The seq to print to on error * @event: the event that the field is for * @name: The name of the field * @record: The record with the field name. * @val: place to store the value of the field. * @err: print default error if failed. * * Returns 0 on success -1 on field not found. */ int pevent_get_any_field_val(struct trace_seq *s, struct event_format *event, const char *name, struct pevent_record *record, unsigned long long *val, int err) { struct format_field *field; if (!event) return -1; field = pevent_find_any_field(event, name); return get_field_val(s, field, name, record, val, err); } /** * pevent_print_num_field - print a field and a format * @s: The seq to print to * @fmt: The printf format to print the field with. * @event: the event that the field is for * @name: The name of the field * @record: The record with the field name. * @err: print default error if failed. * * Returns: 0 on success, -1 field not found, or 1 if buffer is full. */ int pevent_print_num_field(struct trace_seq *s, const char *fmt, struct event_format *event, const char *name, struct pevent_record *record, int err) { struct format_field *field = pevent_find_field(event, name); unsigned long long val; if (!field) goto failed; if (pevent_read_number_field(field, record->data, &val)) goto failed; return trace_seq_printf(s, fmt, val); failed: if (err) trace_seq_printf(s, "CAN'T FIND FIELD \"%s\"", name); return -1; } /** * pevent_print_func_field - print a field and a format for function pointers * @s: The seq to print to * @fmt: The printf format to print the field with. * @event: the event that the field is for * @name: The name of the field * @record: The record with the field name. * @err: print default error if failed. * * Returns: 0 on success, -1 field not found, or 1 if buffer is full. */ int pevent_print_func_field(struct trace_seq *s, const char *fmt, struct event_format *event, const char *name, struct pevent_record *record, int err) { struct format_field *field = pevent_find_field(event, name); struct pevent *pevent = event->pevent; unsigned long long val; struct func_map *func; char tmp[128]; if (!field) goto failed; if (pevent_read_number_field(field, record->data, &val)) goto failed; func = find_func(pevent, val); if (func) snprintf(tmp, 128, "%s/0x%llx", func->func, func->addr - val); else sprintf(tmp, "0x%08llx", val); return trace_seq_printf(s, fmt, tmp); failed: if (err) trace_seq_printf(s, "CAN'T FIND FIELD \"%s\"", name); return -1; } static void free_func_handle(struct pevent_function_handler *func) { struct pevent_func_params *params; free(func->name); while (func->params) { params = func->params; func->params = params->next; free(params); } free(func); } /** * pevent_register_print_function - register a helper function * @pevent: the handle to the pevent * @func: the function to process the helper function * @ret_type: the return type of the helper function * @name: the name of the helper function * @parameters: A list of enum pevent_func_arg_type * * Some events may have helper functions in the print format arguments. * This allows a plugin to dynamically create a way to process one * of these functions. * * The @parameters is a variable list of pevent_func_arg_type enums that * must end with PEVENT_FUNC_ARG_VOID. */ int pevent_register_print_function(struct pevent *pevent, pevent_func_handler func, enum pevent_func_arg_type ret_type, char *name, ...) { struct pevent_function_handler *func_handle; struct pevent_func_params **next_param; struct pevent_func_params *param; enum pevent_func_arg_type type; va_list ap; int ret; func_handle = find_func_handler(pevent, name); if (func_handle) { /* * This is most like caused by the users own * plugins updating the function. This overrides the * system defaults. */ pr_stat("override of function helper '%s'", name); remove_func_handler(pevent, name); } func_handle = calloc(1, sizeof(*func_handle)); if (!func_handle) { do_warning("Failed to allocate function handler"); return PEVENT_ERRNO__MEM_ALLOC_FAILED; } func_handle->ret_type = ret_type; func_handle->name = strdup(name); func_handle->func = func; if (!func_handle->name) { do_warning("Failed to allocate function name"); free(func_handle); return PEVENT_ERRNO__MEM_ALLOC_FAILED; } next_param = &(func_handle->params); va_start(ap, name); for (;;) { type = va_arg(ap, enum pevent_func_arg_type); if (type == PEVENT_FUNC_ARG_VOID) break; if (type >= PEVENT_FUNC_ARG_MAX_TYPES) { do_warning("Invalid argument type %d", type); ret = PEVENT_ERRNO__INVALID_ARG_TYPE; goto out_free; } param = malloc(sizeof(*param)); if (!param) { do_warning("Failed to allocate function param"); ret = PEVENT_ERRNO__MEM_ALLOC_FAILED; goto out_free; } param->type = type; param->next = NULL; *next_param = param; next_param = &(param->next); func_handle->nr_args++; } va_end(ap); func_handle->next = pevent->func_handlers; pevent->func_handlers = func_handle; return 0; out_free: va_end(ap); free_func_handle(func_handle); return ret; } /** * pevent_unregister_print_function - unregister a helper function * @pevent: the handle to the pevent * @func: the function to process the helper function * @name: the name of the helper function * * This function removes existing print handler for function @name. * * Returns 0 if the handler was removed successully, -1 otherwise. */ int pevent_unregister_print_function(struct pevent *pevent, pevent_func_handler func, char *name) { struct pevent_function_handler *func_handle; func_handle = find_func_handler(pevent, name); if (func_handle && func_handle->func == func) { remove_func_handler(pevent, name); return 0; } return -1; } static struct event_format *pevent_search_event(struct pevent *pevent, int id, const char *sys_name, const char *event_name) { struct event_format *event; if (id >= 0) { /* search by id */ event = pevent_find_event(pevent, id); if (!event) return NULL; if (event_name && (strcmp(event_name, event->name) != 0)) return NULL; if (sys_name && (strcmp(sys_name, event->system) != 0)) return NULL; } else { event = pevent_find_event_by_name(pevent, sys_name, event_name); if (!event) return NULL; } return event; } /** * pevent_register_event_handler - register a way to parse an event * @pevent: the handle to the pevent * @id: the id of the event to register * @sys_name: the system name the event belongs to * @event_name: the name of the event * @func: the function to call to parse the event information * @context: the data to be passed to @func * * This function allows a developer to override the parsing of * a given event. If for some reason the default print format * is not sufficient, this function will register a function * for an event to be used to parse the data instead. * * If @id is >= 0, then it is used to find the event. * else @sys_name and @event_name are used. */ int pevent_register_event_handler(struct pevent *pevent, int id, const char *sys_name, const char *event_name, pevent_event_handler_func func, void *context) { struct event_format *event; struct event_handler *handle; event = pevent_search_event(pevent, id, sys_name, event_name); if (event == NULL) goto not_found; pr_stat("overriding event (%d) %s:%s with new print handler", event->id, event->system, event->name); event->handler = func; event->context = context; return 0; not_found: /* Save for later use. */ handle = calloc(1, sizeof(*handle)); if (!handle) { do_warning("Failed to allocate event handler"); return PEVENT_ERRNO__MEM_ALLOC_FAILED; } handle->id = id; if (event_name) handle->event_name = strdup(event_name); if (sys_name) handle->sys_name = strdup(sys_name); if ((event_name && !handle->event_name) || (sys_name && !handle->sys_name)) { do_warning("Failed to allocate event/sys name"); free((void *)handle->event_name); free((void *)handle->sys_name); free(handle); return PEVENT_ERRNO__MEM_ALLOC_FAILED; } handle->func = func; handle->next = pevent->handlers; pevent->handlers = handle; handle->context = context; return -1; } static int handle_matches(struct event_handler *handler, int id, const char *sys_name, const char *event_name, pevent_event_handler_func func, void *context) { if (id >= 0 && id != handler->id) return 0; if (event_name && (strcmp(event_name, handler->event_name) != 0)) return 0; if (sys_name && (strcmp(sys_name, handler->sys_name) != 0)) return 0; if (func != handler->func || context != handler->context) return 0; return 1; } /** * pevent_unregister_event_handler - unregister an existing event handler * @pevent: the handle to the pevent * @id: the id of the event to unregister * @sys_name: the system name the handler belongs to * @event_name: the name of the event handler * @func: the function to call to parse the event information * @context: the data to be passed to @func * * This function removes existing event handler (parser). * * If @id is >= 0, then it is used to find the event. * else @sys_name and @event_name are used. * * Returns 0 if handler was removed successfully, -1 if event was not found. */ int pevent_unregister_event_handler(struct pevent *pevent, int id, const char *sys_name, const char *event_name, pevent_event_handler_func func, void *context) { struct event_format *event; struct event_handler *handle; struct event_handler **next; event = pevent_search_event(pevent, id, sys_name, event_name); if (event == NULL) goto not_found; if (event->handler == func && event->context == context) { pr_stat("removing override handler for event (%d) %s:%s. Going back to default handler.", event->id, event->system, event->name); event->handler = NULL; event->context = NULL; return 0; } not_found: for (next = &pevent->handlers; *next; next = &(*next)->next) { handle = *next; if (handle_matches(handle, id, sys_name, event_name, func, context)) break; } if (!(*next)) return -1; *next = handle->next; free_handler(handle); return 0; } /** * pevent_alloc - create a pevent handle */ struct pevent *pevent_alloc(void) { struct pevent *pevent = calloc(1, sizeof(*pevent)); if (pevent) pevent->ref_count = 1; return pevent; } void pevent_ref(struct pevent *pevent) { pevent->ref_count++; } static void free_format_fields(struct format_field *field) { struct format_field *next; while (field) { next = field->next; free(field->type); free(field->name); free(field); field = next; } } static void free_formats(struct format *format) { free_format_fields(format->common_fields); free_format_fields(format->fields); } void pevent_free_format(struct event_format *event) { free(event->name); free(event->system); free_formats(&event->format); free(event->print_fmt.format); free_args(event->print_fmt.args); free(event); } /** * pevent_free - free a pevent handle * @pevent: the pevent handle to free */ void pevent_free(struct pevent *pevent) { struct cmdline_list *cmdlist, *cmdnext; struct func_list *funclist, *funcnext; struct printk_list *printklist, *printknext; struct pevent_function_handler *func_handler; struct event_handler *handle; int i; if (!pevent) return; cmdlist = pevent->cmdlist; funclist = pevent->funclist; printklist = pevent->printklist; pevent->ref_count--; if (pevent->ref_count) return; if (pevent->cmdlines) { for (i = 0; i < pevent->cmdline_count; i++) free(pevent->cmdlines[i].comm); free(pevent->cmdlines); } while (cmdlist) { cmdnext = cmdlist->next; free(cmdlist->comm); free(cmdlist); cmdlist = cmdnext; } if (pevent->func_map) { for (i = 0; i < (int)pevent->func_count; i++) { free(pevent->func_map[i].func); free(pevent->func_map[i].mod); } free(pevent->func_map); } while (funclist) { funcnext = funclist->next; free(funclist->func); free(funclist->mod); free(funclist); funclist = funcnext; } while (pevent->func_handlers) { func_handler = pevent->func_handlers; pevent->func_handlers = func_handler->next; free_func_handle(func_handler); } if (pevent->printk_map) { for (i = 0; i < (int)pevent->printk_count; i++) free(pevent->printk_map[i].printk); free(pevent->printk_map); } while (printklist) { printknext = printklist->next; free(printklist->printk); free(printklist); printklist = printknext; } for (i = 0; i < pevent->nr_events; i++) pevent_free_format(pevent->events[i]); while (pevent->handlers) { handle = pevent->handlers; pevent->handlers = handle->next; free_handler(handle); } free(pevent->trace_clock); free(pevent->events); free(pevent->sort_events); free(pevent); } void pevent_unref(struct pevent *pevent) { pevent_free(pevent); } trace-cmd-2.5.3/event-parse.h000066400000000000000000000573431246701203100157720ustar00rootroot00000000000000/* * Copyright (C) 2009, 2010 Red Hat Inc, Steven Rostedt * * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ * This program is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; * version 2.1 of the License (not later!) * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this program; if not, see * * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ */ #ifndef _PARSE_EVENTS_H #define _PARSE_EVENTS_H #include #include #include #include #ifndef __maybe_unused #define __maybe_unused __attribute__((unused)) #endif /* ----------------------- trace_seq ----------------------- */ #ifndef TRACE_SEQ_BUF_SIZE #define TRACE_SEQ_BUF_SIZE 4096 #endif #ifndef DEBUG_RECORD #define DEBUG_RECORD 0 #endif struct pevent_record { unsigned long long ts; unsigned long long offset; long long missed_events; /* buffer dropped events before */ int record_size; /* size of binary record */ int size; /* size of data */ void *data; int cpu; int ref_count; int locked; /* Do not free, even if ref_count is zero */ void *priv; #if DEBUG_RECORD struct pevent_record *prev; struct pevent_record *next; long alloc_addr; #endif }; enum trace_seq_fail { TRACE_SEQ__GOOD, TRACE_SEQ__BUFFER_POISONED, TRACE_SEQ__MEM_ALLOC_FAILED, }; /* * Trace sequences are used to allow a function to call several other functions * to create a string of data to use (up to a max of PAGE_SIZE). */ struct trace_seq { char *buffer; unsigned int buffer_size; unsigned int len; unsigned int readpos; enum trace_seq_fail state; }; void trace_seq_init(struct trace_seq *s); void trace_seq_reset(struct trace_seq *s); void trace_seq_destroy(struct trace_seq *s); extern int trace_seq_printf(struct trace_seq *s, const char *fmt, ...) __attribute__ ((format (printf, 2, 3))); extern int trace_seq_vprintf(struct trace_seq *s, const char *fmt, va_list args) __attribute__ ((format (printf, 2, 0))); extern int trace_seq_puts(struct trace_seq *s, const char *str); extern int trace_seq_putc(struct trace_seq *s, unsigned char c); extern void trace_seq_terminate(struct trace_seq *s); extern int trace_seq_do_printf(struct trace_seq *s); /* ----------------------- pevent ----------------------- */ struct pevent; struct event_format; typedef int (*pevent_event_handler_func)(struct trace_seq *s, struct pevent_record *record, struct event_format *event, void *context); typedef int (*pevent_plugin_load_func)(struct pevent *pevent); typedef int (*pevent_plugin_unload_func)(struct pevent *pevent); struct plugin_option { struct plugin_option *next; void *handle; char *file; char *name; char *plugin_alias; char *description; const char *value; void *priv; int set; }; /* * Plugin hooks that can be called: * * PEVENT_PLUGIN_LOADER: (required) * The function name to initialized the plugin. * * int PEVENT_PLUGIN_LOADER(struct pevent *pevent) * * PEVENT_PLUGIN_UNLOADER: (optional) * The function called just before unloading * * int PEVENT_PLUGIN_UNLOADER(void) * * PEVENT_PLUGIN_OPTIONS: (optional) * Plugin options that can be set before loading * * struct plugin_option PEVENT_PLUGIN_OPTIONS[] = { * { * .name = "option-name", * .plugin_alias = "overide-file-name", (optional) * .description = "description of option to show users", * }, * { * .name = NULL, * }, * }; * * Array must end with .name = NULL; * * * .plugin_alias is used to give a shorter name to access * the vairable. Useful if a plugin handles more than one event. * * If .value is not set, then it is considered a boolean and only * .set will be processed. If .value is defined, then it is considered * a string option and .set will be ignored. * * PEVENT_PLUGIN_ALIAS: (optional) * The name to use for finding options (uses filename if not defined) */ #define PEVENT_PLUGIN_LOADER pevent_plugin_loader #define PEVENT_PLUGIN_UNLOADER pevent_plugin_unloader #define PEVENT_PLUGIN_OPTIONS pevent_plugin_options #define PEVENT_PLUGIN_ALIAS pevent_plugin_alias #define _MAKE_STR(x) #x #define MAKE_STR(x) _MAKE_STR(x) #define PEVENT_PLUGIN_LOADER_NAME MAKE_STR(PEVENT_PLUGIN_LOADER) #define PEVENT_PLUGIN_UNLOADER_NAME MAKE_STR(PEVENT_PLUGIN_UNLOADER) #define PEVENT_PLUGIN_OPTIONS_NAME MAKE_STR(PEVENT_PLUGIN_OPTIONS) #define PEVENT_PLUGIN_ALIAS_NAME MAKE_STR(PEVENT_PLUGIN_ALIAS) #define NSECS_PER_SEC 1000000000ULL #define NSECS_PER_USEC 1000ULL enum format_flags { FIELD_IS_ARRAY = 1, FIELD_IS_POINTER = 2, FIELD_IS_SIGNED = 4, FIELD_IS_STRING = 8, FIELD_IS_DYNAMIC = 16, FIELD_IS_LONG = 32, FIELD_IS_FLAG = 64, FIELD_IS_SYMBOLIC = 128, }; struct format_field { struct format_field *next; struct event_format *event; char *type; char *name; int offset; int size; unsigned int arraylen; unsigned int elementsize; unsigned long flags; }; struct format { int nr_common; int nr_fields; struct format_field *common_fields; struct format_field *fields; }; struct print_arg_atom { char *atom; }; struct print_arg_string { char *string; int offset; }; struct print_arg_bitmask { char *bitmask; int offset; }; struct print_arg_field { char *name; struct format_field *field; }; struct print_flag_sym { struct print_flag_sym *next; char *value; char *str; }; struct print_arg_typecast { char *type; struct print_arg *item; }; struct print_arg_flags { struct print_arg *field; char *delim; struct print_flag_sym *flags; }; struct print_arg_symbol { struct print_arg *field; struct print_flag_sym *symbols; }; struct print_arg_hex { struct print_arg *field; struct print_arg *size; }; struct print_arg_dynarray { struct format_field *field; struct print_arg *index; }; struct print_arg; struct print_arg_op { char *op; int prio; struct print_arg *left; struct print_arg *right; }; struct pevent_function_handler; struct print_arg_func { struct pevent_function_handler *func; struct print_arg *args; }; enum print_arg_type { PRINT_NULL, PRINT_ATOM, PRINT_FIELD, PRINT_FLAGS, PRINT_SYMBOL, PRINT_HEX, PRINT_TYPE, PRINT_STRING, PRINT_BSTRING, PRINT_DYNAMIC_ARRAY, PRINT_OP, PRINT_FUNC, PRINT_BITMASK, }; struct print_arg { struct print_arg *next; enum print_arg_type type; union { struct print_arg_atom atom; struct print_arg_field field; struct print_arg_typecast typecast; struct print_arg_flags flags; struct print_arg_symbol symbol; struct print_arg_hex hex; struct print_arg_func func; struct print_arg_string string; struct print_arg_bitmask bitmask; struct print_arg_op op; struct print_arg_dynarray dynarray; }; }; struct print_fmt { char *format; struct print_arg *args; }; struct event_format { struct pevent *pevent; char *name; int id; int flags; struct format format; struct print_fmt print_fmt; char *system; pevent_event_handler_func handler; void *context; }; enum { EVENT_FL_ISFTRACE = 0x01, EVENT_FL_ISPRINT = 0x02, EVENT_FL_ISBPRINT = 0x04, EVENT_FL_ISFUNCENT = 0x10, EVENT_FL_ISFUNCRET = 0x20, EVENT_FL_NOHANDLE = 0x40, EVENT_FL_PRINTRAW = 0x80, EVENT_FL_FAILED = 0x80000000 }; enum event_sort_type { EVENT_SORT_ID, EVENT_SORT_NAME, EVENT_SORT_SYSTEM, }; enum event_type { EVENT_ERROR, EVENT_NONE, EVENT_SPACE, EVENT_NEWLINE, EVENT_OP, EVENT_DELIM, EVENT_ITEM, EVENT_DQUOTE, EVENT_SQUOTE, }; typedef unsigned long long (*pevent_func_handler)(struct trace_seq *s, unsigned long long *args); enum pevent_func_arg_type { PEVENT_FUNC_ARG_VOID, PEVENT_FUNC_ARG_INT, PEVENT_FUNC_ARG_LONG, PEVENT_FUNC_ARG_STRING, PEVENT_FUNC_ARG_PTR, PEVENT_FUNC_ARG_MAX_TYPES }; enum pevent_flag { PEVENT_NSEC_OUTPUT = 1, /* output in NSECS */ }; #define PEVENT_ERRORS \ _PE(MEM_ALLOC_FAILED, "failed to allocate memory"), \ _PE(PARSE_EVENT_FAILED, "failed to parse event"), \ _PE(READ_ID_FAILED, "failed to read event id"), \ _PE(READ_FORMAT_FAILED, "failed to read event format"), \ _PE(READ_PRINT_FAILED, "failed to read event print fmt"), \ _PE(OLD_FTRACE_ARG_FAILED,"failed to allocate field name for ftrace"),\ _PE(INVALID_ARG_TYPE, "invalid argument type"), \ _PE(INVALID_EXP_TYPE, "invalid expression type"), \ _PE(INVALID_OP_TYPE, "invalid operator type"), \ _PE(INVALID_EVENT_NAME, "invalid event name"), \ _PE(EVENT_NOT_FOUND, "no event found"), \ _PE(SYNTAX_ERROR, "syntax error"), \ _PE(ILLEGAL_RVALUE, "illegal rvalue"), \ _PE(ILLEGAL_LVALUE, "illegal lvalue for string comparison"), \ _PE(INVALID_REGEX, "regex did not compute"), \ _PE(ILLEGAL_STRING_CMP, "illegal comparison for string"), \ _PE(ILLEGAL_INTEGER_CMP,"illegal comparison for integer"), \ _PE(REPARENT_NOT_OP, "cannot reparent other than OP"), \ _PE(REPARENT_FAILED, "failed to reparent filter OP"), \ _PE(BAD_FILTER_ARG, "bad arg in filter tree"), \ _PE(UNEXPECTED_TYPE, "unexpected type (not a value)"), \ _PE(ILLEGAL_TOKEN, "illegal token"), \ _PE(INVALID_PAREN, "open parenthesis cannot come here"), \ _PE(UNBALANCED_PAREN, "unbalanced number of parenthesis"), \ _PE(UNKNOWN_TOKEN, "unknown token"), \ _PE(FILTER_NOT_FOUND, "no filter found"), \ _PE(NOT_A_NUMBER, "must have number field"), \ _PE(NO_FILTER, "no filters exists"), \ _PE(FILTER_MISS, "record does not match to filter") #undef _PE #define _PE(__code, __str) PEVENT_ERRNO__ ## __code enum pevent_errno { PEVENT_ERRNO__SUCCESS = 0, PEVENT_ERRNO__FILTER_MATCH = PEVENT_ERRNO__SUCCESS, /* * Choose an arbitrary negative big number not to clash with standard * errno since SUS requires the errno has distinct positive values. * See 'Issue 6' in the link below. * * http://pubs.opengroup.org/onlinepubs/9699919799/basedefs/errno.h.html */ __PEVENT_ERRNO__START = -100000, PEVENT_ERRORS, __PEVENT_ERRNO__END, }; #undef _PE struct plugin_list; struct plugin_list *traceevent_load_plugins(struct pevent *pevent); void traceevent_unload_plugins(struct plugin_list *plugin_list, struct pevent *pevent); struct cmdline; struct cmdline_list; struct func_map; struct func_list; struct event_handler; struct pevent { int ref_count; int header_page_ts_offset; int header_page_ts_size; int header_page_size_offset; int header_page_size_size; int header_page_data_offset; int header_page_data_size; int header_page_overwrite; int file_bigendian; int host_bigendian; int latency_format; int old_format; int cpus; int long_size; int page_size; struct cmdline *cmdlines; struct cmdline_list *cmdlist; int cmdline_count; struct func_map *func_map; struct func_list *funclist; unsigned int func_count; struct printk_map *printk_map; struct printk_list *printklist; unsigned int printk_count; struct event_format **events; int nr_events; struct event_format **sort_events; enum event_sort_type last_type; int type_offset; int type_size; int pid_offset; int pid_size; int pc_offset; int pc_size; int flags_offset; int flags_size; int ld_offset; int ld_size; int print_raw; int test_filters; int flags; struct format_field *bprint_ip_field; struct format_field *bprint_fmt_field; struct format_field *bprint_buf_field; struct event_handler *handlers; struct pevent_function_handler *func_handlers; int parsing_failures; /* cache */ struct event_format *last_event; char *trace_clock; }; static inline void pevent_set_flag(struct pevent *pevent, int flag) { pevent->flags |= flag; } static inline unsigned short __data2host2(struct pevent *pevent, unsigned short data) { unsigned short swap; if (pevent->host_bigendian == pevent->file_bigendian) return data; swap = ((data & 0xffULL) << 8) | ((data & (0xffULL << 8)) >> 8); return swap; } static inline unsigned int __data2host4(struct pevent *pevent, unsigned int data) { unsigned int swap; if (pevent->host_bigendian == pevent->file_bigendian) return data; swap = ((data & 0xffULL) << 24) | ((data & (0xffULL << 8)) << 8) | ((data & (0xffULL << 16)) >> 8) | ((data & (0xffULL << 24)) >> 24); return swap; } static inline unsigned long long __data2host8(struct pevent *pevent, unsigned long long data) { unsigned long long swap; if (pevent->host_bigendian == pevent->file_bigendian) return data; swap = ((data & 0xffULL) << 56) | ((data & (0xffULL << 8)) << 40) | ((data & (0xffULL << 16)) << 24) | ((data & (0xffULL << 24)) << 8) | ((data & (0xffULL << 32)) >> 8) | ((data & (0xffULL << 40)) >> 24) | ((data & (0xffULL << 48)) >> 40) | ((data & (0xffULL << 56)) >> 56); return swap; } #define data2host2(pevent, ptr) __data2host2(pevent, *(unsigned short *)(ptr)) #define data2host4(pevent, ptr) __data2host4(pevent, *(unsigned int *)(ptr)) #define data2host8(pevent, ptr) \ ({ \ unsigned long long __val; \ \ memcpy(&__val, (ptr), sizeof(unsigned long long)); \ __data2host8(pevent, __val); \ }) static inline int traceevent_host_bigendian(void) { unsigned char str[] = { 0x1, 0x2, 0x3, 0x4 }; unsigned int val; memcpy(&val, str, 4); return val == 0x01020304; } /* taken from kernel/trace/trace.h */ enum trace_flag_type { TRACE_FLAG_IRQS_OFF = 0x01, TRACE_FLAG_IRQS_NOSUPPORT = 0x02, TRACE_FLAG_NEED_RESCHED = 0x04, TRACE_FLAG_HARDIRQ = 0x08, TRACE_FLAG_SOFTIRQ = 0x10, }; int pevent_register_comm(struct pevent *pevent, const char *comm, int pid); int pevent_register_trace_clock(struct pevent *pevent, const char *trace_clock); int pevent_register_function(struct pevent *pevent, char *name, unsigned long long addr, char *mod); int pevent_register_print_string(struct pevent *pevent, const char *fmt, unsigned long long addr); int pevent_pid_is_registered(struct pevent *pevent, int pid); void pevent_print_event(struct pevent *pevent, struct trace_seq *s, struct pevent_record *record, bool use_trace_clock); int pevent_parse_header_page(struct pevent *pevent, char *buf, unsigned long size, int long_size); enum pevent_errno pevent_parse_event(struct pevent *pevent, const char *buf, unsigned long size, const char *sys); enum pevent_errno pevent_parse_format(struct pevent *pevent, struct event_format **eventp, const char *buf, unsigned long size, const char *sys); void pevent_free_format(struct event_format *event); void *pevent_get_field_raw(struct trace_seq *s, struct event_format *event, const char *name, struct pevent_record *record, int *len, int err); int pevent_get_field_val(struct trace_seq *s, struct event_format *event, const char *name, struct pevent_record *record, unsigned long long *val, int err); int pevent_get_common_field_val(struct trace_seq *s, struct event_format *event, const char *name, struct pevent_record *record, unsigned long long *val, int err); int pevent_get_any_field_val(struct trace_seq *s, struct event_format *event, const char *name, struct pevent_record *record, unsigned long long *val, int err); int pevent_print_num_field(struct trace_seq *s, const char *fmt, struct event_format *event, const char *name, struct pevent_record *record, int err); int pevent_print_func_field(struct trace_seq *s, const char *fmt, struct event_format *event, const char *name, struct pevent_record *record, int err); int pevent_register_event_handler(struct pevent *pevent, int id, const char *sys_name, const char *event_name, pevent_event_handler_func func, void *context); int pevent_unregister_event_handler(struct pevent *pevent, int id, const char *sys_name, const char *event_name, pevent_event_handler_func func, void *context); int pevent_register_print_function(struct pevent *pevent, pevent_func_handler func, enum pevent_func_arg_type ret_type, char *name, ...); int pevent_unregister_print_function(struct pevent *pevent, pevent_func_handler func, char *name); struct format_field *pevent_find_common_field(struct event_format *event, const char *name); struct format_field *pevent_find_field(struct event_format *event, const char *name); struct format_field *pevent_find_any_field(struct event_format *event, const char *name); const char *pevent_find_function(struct pevent *pevent, unsigned long long addr); unsigned long long pevent_find_function_address(struct pevent *pevent, unsigned long long addr); unsigned long long pevent_read_number(struct pevent *pevent, const void *ptr, int size); int pevent_read_number_field(struct format_field *field, const void *data, unsigned long long *value); struct event_format *pevent_find_event(struct pevent *pevent, int id); struct event_format * pevent_find_event_by_name(struct pevent *pevent, const char *sys, const char *name); void pevent_data_lat_fmt(struct pevent *pevent, struct trace_seq *s, struct pevent_record *record); int pevent_data_type(struct pevent *pevent, struct pevent_record *rec); struct event_format *pevent_data_event_from_type(struct pevent *pevent, int type); int pevent_data_pid(struct pevent *pevent, struct pevent_record *rec); const char *pevent_data_comm_from_pid(struct pevent *pevent, int pid); struct cmdline; struct cmdline *pevent_data_pid_from_comm(struct pevent *pevent, const char *comm, struct cmdline *next); int pevent_cmdline_pid(struct pevent *pevent, struct cmdline *cmdline); void pevent_event_info(struct trace_seq *s, struct event_format *event, struct pevent_record *record); int pevent_strerror(struct pevent *pevent, enum pevent_errno errnum, char *buf, size_t buflen); struct event_format **pevent_list_events(struct pevent *pevent, enum event_sort_type); struct format_field **pevent_event_common_fields(struct event_format *event); struct format_field **pevent_event_fields(struct event_format *event); static inline int pevent_get_cpus(struct pevent *pevent) { return pevent->cpus; } static inline void pevent_set_cpus(struct pevent *pevent, int cpus) { pevent->cpus = cpus; } static inline int pevent_get_long_size(struct pevent *pevent) { return pevent->long_size; } static inline void pevent_set_long_size(struct pevent *pevent, int long_size) { pevent->long_size = long_size; } static inline int pevent_get_page_size(struct pevent *pevent) { return pevent->page_size; } static inline void pevent_set_page_size(struct pevent *pevent, int _page_size) { pevent->page_size = _page_size; } static inline int pevent_is_file_bigendian(struct pevent *pevent) { return pevent->file_bigendian; } static inline void pevent_set_file_bigendian(struct pevent *pevent, int endian) { pevent->file_bigendian = endian; } static inline int pevent_is_host_bigendian(struct pevent *pevent) { return pevent->host_bigendian; } static inline void pevent_set_host_bigendian(struct pevent *pevent, int endian) { pevent->host_bigendian = endian; } static inline int pevent_is_latency_format(struct pevent *pevent) { return pevent->latency_format; } static inline void pevent_set_latency_format(struct pevent *pevent, int lat) { pevent->latency_format = lat; } struct pevent *pevent_alloc(void); void pevent_free(struct pevent *pevent); void pevent_ref(struct pevent *pevent); void pevent_unref(struct pevent *pevent); /* access to the internal parser */ void pevent_buffer_init(const char *buf, unsigned long long size); enum event_type pevent_read_token(char **tok); void pevent_free_token(char *token); int pevent_peek_char(void); const char *pevent_get_input_buf(void); unsigned long long pevent_get_input_buf_ptr(void); /* for debugging */ void pevent_print_funcs(struct pevent *pevent); void pevent_print_printk(struct pevent *pevent); /* ----------------------- filtering ----------------------- */ enum filter_boolean_type { FILTER_FALSE, FILTER_TRUE, }; enum filter_op_type { FILTER_OP_AND = 1, FILTER_OP_OR, FILTER_OP_NOT, }; enum filter_cmp_type { FILTER_CMP_NONE, FILTER_CMP_EQ, FILTER_CMP_NE, FILTER_CMP_GT, FILTER_CMP_LT, FILTER_CMP_GE, FILTER_CMP_LE, FILTER_CMP_MATCH, FILTER_CMP_NOT_MATCH, FILTER_CMP_REGEX, FILTER_CMP_NOT_REGEX, }; enum filter_exp_type { FILTER_EXP_NONE, FILTER_EXP_ADD, FILTER_EXP_SUB, FILTER_EXP_MUL, FILTER_EXP_DIV, FILTER_EXP_MOD, FILTER_EXP_RSHIFT, FILTER_EXP_LSHIFT, FILTER_EXP_AND, FILTER_EXP_OR, FILTER_EXP_XOR, FILTER_EXP_NOT, }; enum filter_arg_type { FILTER_ARG_NONE, FILTER_ARG_BOOLEAN, FILTER_ARG_VALUE, FILTER_ARG_FIELD, FILTER_ARG_EXP, FILTER_ARG_OP, FILTER_ARG_NUM, FILTER_ARG_STR, }; enum filter_value_type { FILTER_NUMBER, FILTER_STRING, FILTER_CHAR }; struct fliter_arg; struct filter_arg_boolean { enum filter_boolean_type value; }; struct filter_arg_field { struct format_field *field; }; struct filter_arg_value { enum filter_value_type type; union { char *str; unsigned long long val; }; }; struct filter_arg_op { enum filter_op_type type; struct filter_arg *left; struct filter_arg *right; }; struct filter_arg_exp { enum filter_exp_type type; struct filter_arg *left; struct filter_arg *right; }; struct filter_arg_num { enum filter_cmp_type type; struct filter_arg *left; struct filter_arg *right; }; struct filter_arg_str { enum filter_cmp_type type; struct format_field *field; char *val; char *buffer; regex_t reg; }; struct filter_arg { enum filter_arg_type type; union { struct filter_arg_boolean boolean; struct filter_arg_field field; struct filter_arg_value value; struct filter_arg_op op; struct filter_arg_exp exp; struct filter_arg_num num; struct filter_arg_str str; }; }; struct filter_type { int event_id; struct event_format *event; struct filter_arg *filter; }; #define PEVENT_FILTER_ERROR_BUFSZ 1024 struct event_filter { struct pevent *pevent; int filters; struct filter_type *event_filters; char error_buffer[PEVENT_FILTER_ERROR_BUFSZ]; }; struct event_filter *pevent_filter_alloc(struct pevent *pevent); /* for backward compatibility */ #define FILTER_NONE PEVENT_ERRNO__NO_FILTER #define FILTER_NOEXIST PEVENT_ERRNO__FILTER_NOT_FOUND #define FILTER_MISS PEVENT_ERRNO__FILTER_MISS #define FILTER_MATCH PEVENT_ERRNO__FILTER_MATCH enum filter_trivial_type { FILTER_TRIVIAL_FALSE, FILTER_TRIVIAL_TRUE, FILTER_TRIVIAL_BOTH, }; enum pevent_errno pevent_filter_add_filter_str(struct event_filter *filter, const char *filter_str); enum pevent_errno pevent_filter_match(struct event_filter *filter, struct pevent_record *record); int pevent_filter_strerror(struct event_filter *filter, enum pevent_errno err, char *buf, size_t buflen); int pevent_event_filtered(struct event_filter *filter, int event_id); void pevent_filter_reset(struct event_filter *filter); int pevent_filter_clear_trivial(struct event_filter *filter, enum filter_trivial_type type); void pevent_filter_free(struct event_filter *filter); char *pevent_filter_make_string(struct event_filter *filter, int event_id); int pevent_filter_remove_event(struct event_filter *filter, int event_id); int pevent_filter_event_has_trivial(struct event_filter *filter, int event_id, enum filter_trivial_type type); int pevent_filter_copy(struct event_filter *dest, struct event_filter *source); int pevent_update_trivial(struct event_filter *dest, struct event_filter *source, enum filter_trivial_type type); int pevent_filter_compare(struct event_filter *filter1, struct event_filter *filter2); #endif /* _PARSE_EVENTS_H */ trace-cmd-2.5.3/event-plugin.c000066400000000000000000000112251246701203100161360ustar00rootroot00000000000000/* * Copyright (C) 2009, 2010 Red Hat Inc, Steven Rostedt * * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ * This program is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; * version 2.1 of the License (not later!) * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this program; if not, see * * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ */ #include #include #include #include #include #include #include #include "event-parse.h" #include "event-utils.h" #define LOCAL_PLUGIN_DIR ".traceevent/plugins" struct plugin_list { struct plugin_list *next; char *name; void *handle; }; static void load_plugin(struct pevent *pevent, const char *path, const char *file, void *data) { struct plugin_list **plugin_list = data; pevent_plugin_load_func func; struct plugin_list *list; const char *alias; char *plugin; void *handle; plugin = malloc(strlen(path) + strlen(file) + 2); if (!plugin) { warning("could not allocate plugin memory\n"); return; } strcpy(plugin, path); strcat(plugin, "/"); strcat(plugin, file); handle = dlopen(plugin, RTLD_NOW | RTLD_GLOBAL); if (!handle) { warning("could not load plugin '%s'\n%s\n", plugin, dlerror()); goto out_free; } alias = dlsym(handle, PEVENT_PLUGIN_ALIAS_NAME); if (!alias) alias = file; func = dlsym(handle, PEVENT_PLUGIN_LOADER_NAME); if (!func) { warning("could not find func '%s' in plugin '%s'\n%s\n", PEVENT_PLUGIN_LOADER_NAME, plugin, dlerror()); goto out_free; } list = malloc(sizeof(*list)); if (!list) { warning("could not allocate plugin memory\n"); goto out_free; } list->next = *plugin_list; list->handle = handle; list->name = plugin; *plugin_list = list; pr_stat("registering plugin: %s", plugin); func(pevent); return; out_free: free(plugin); } static void load_plugins_dir(struct pevent *pevent, const char *suffix, const char *path, void (*load_plugin)(struct pevent *pevent, const char *path, const char *name, void *data), void *data) { struct dirent *dent; struct stat st; DIR *dir; int ret; ret = stat(path, &st); if (ret < 0) return; if (!S_ISDIR(st.st_mode)) return; dir = opendir(path); if (!dir) return; while ((dent = readdir(dir))) { const char *name = dent->d_name; if (strcmp(name, ".") == 0 || strcmp(name, "..") == 0) continue; /* Only load plugins that end in suffix */ if (strcmp(name + (strlen(name) - strlen(suffix)), suffix) != 0) continue; load_plugin(pevent, path, name, data); } closedir(dir); } static void load_plugins(struct pevent *pevent, const char *suffix, void (*load_plugin)(struct pevent *pevent, const char *path, const char *name, void *data), void *data) { char *home; char *path; char *envdir; /* * If a system plugin directory was defined, * check that first. */ #ifdef PLUGIN_DIR load_plugins_dir(pevent, suffix, PLUGIN_DIR, load_plugin, data); #endif /* * Next let the environment-set plugin directory * override the system defaults. */ envdir = getenv("TRACEEVENT_PLUGIN_DIR"); if (envdir) load_plugins_dir(pevent, suffix, envdir, load_plugin, data); /* * Now let the home directory override the environment * or system defaults. */ home = getenv("HOME"); if (!home) return; path = malloc(strlen(home) + strlen(LOCAL_PLUGIN_DIR) + 2); if (!path) { warning("could not allocate plugin memory\n"); return; } strcpy(path, home); strcat(path, "/"); strcat(path, LOCAL_PLUGIN_DIR); load_plugins_dir(pevent, suffix, path, load_plugin, data); free(path); } struct plugin_list* traceevent_load_plugins(struct pevent *pevent) { struct plugin_list *list = NULL; load_plugins(pevent, ".so", load_plugin, &list); return list; } void traceevent_unload_plugins(struct plugin_list *plugin_list, struct pevent *pevent) { pevent_plugin_unload_func func; struct plugin_list *list; while (plugin_list) { list = plugin_list; plugin_list = list->next; func = dlsym(list->handle, PEVENT_PLUGIN_UNLOADER_NAME); if (func) func(pevent); dlclose(list->handle); free(list->name); free(list); } } trace-cmd-2.5.3/event-utils.h000066400000000000000000000040001246701203100157760ustar00rootroot00000000000000/* * Copyright (C) 2010 Red Hat Inc, Steven Rostedt * * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ * This program is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; * version 2.1 of the License (not later!) * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this program; if not, see * * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ */ #ifndef __UTIL_H #define __UTIL_H #include #include #include /* Can be overridden */ void die(const char *fmt, ...); void *malloc_or_die(unsigned int size); void warning(const char *fmt, ...); void pr_stat(const char *fmt, ...); void vpr_stat(const char *fmt, va_list ap); /* Always available */ void __die(const char *fmt, ...); void __warning(const char *fmt, ...); void __pr_stat(const char *fmt, ...); void __vdie(const char *fmt, ...); void __vwarning(const char *fmt, ...); void __vpr_stat(const char *fmt, ...); #define min(x, y) ({ \ typeof(x) _min1 = (x); \ typeof(y) _min2 = (y); \ (void) (&_min1 == &_min2); \ _min1 < _min2 ? _min1 : _min2; }) static inline char *strim(char *string) { char *ret; if (!string) return NULL; while (*string) { if (!isspace(*string)) break; string++; } ret = string; string = ret + strlen(ret) - 1; while (string > ret) { if (!isspace(*string)) break; string--; } string[1] = 0; return ret; } static inline int has_text(const char *text) { if (!text) return 0; while (*text) { if (!isspace(*text)) return 1; text++; } return 0; } #endif trace-cmd-2.5.3/event-viewer.py000077500000000000000000000173471246701203100163650ustar00rootroot00000000000000#!/usr/bin/env python2 import getopt from gobject import * import gtk from tracecmd import * import time app = None data_func_cnt = 0 # In a "real" app these width should be determined at runtime testing max length # strings in the current font. TS_COL_W = 150 CPU_COL_W = 35 EVENT_COL_W = 150 PID_COL_W = 75 COMM_COL_W = 250 def timing(func): def wrapper(*arg): start = time.time() ret = func(*arg) end = time.time() print '@%s took %0.3f s' % (func.func_name, (end-start)) return ret return wrapper class EventStore(gtk.GenericTreeModel): class EventRef(object): '''Inner class to build the trace event index''' def __init__(self, index, timestamp, offset, cpu): self.index = index self.offset = offset self.ts = timestamp self.cpu = cpu def __cmp__(self, other): if self.ts < other.ts: return -1 if self.ts > other.ts: return 1 if self.offset < other.offset: return -1 if self.offset > other.offset: return 1 return 0 # The store only returns the record offset into the trace # The view is responsible for looking up the Event with the offset column_types = (long,) @timing def __init__(self, trace): gtk.GenericTreeModel.__init__(self) self.trace = trace self.refs = [] self._load_trace() self._sort() self._reindex() @timing def _load_trace(self): print "Building trace index..." index = 0 for cpu in range(0, trace.cpus): rec = tracecmd_read_data(self.trace._handle, cpu) while rec: offset = pevent_record_offset_get(rec) ts = pevent_record_ts_get(rec) self.refs.append(self.EventRef(index, ts, offset, cpu)) index = index + 1 rec = tracecmd_read_data(self.trace._handle, cpu) print "Loaded %d events from trace" % (index) @timing def _sort(self): self.refs.sort() @timing def _reindex(self): for i in range(0, len(self.refs)): self.refs[i].index = i def on_get_flags(self): return gtk.TREE_MODEL_LIST_ONLY | gtk.TREE_MODEL_ITERS_PERSIST def on_get_n_columns(self): return len(self.column_types) def on_get_column_type(self, col): return self.column_types[col] def on_get_iter(self, path): return self.refs[path[0]] def on_get_path(self, ref): return ref.index def on_get_value(self, ref, col): ''' The Event record was getting deleted when passed back via this method, now it just returns the ref itself. Use get_event() instead. ''' if col == 0: #return self.trace.read_event_at(ref.offset) return ref return None def on_iter_next(self, ref): try: return self.refs[ref.index+1] except IndexError: return None def on_iter_children(self, ref): if ref: return None return self.refs[0] def on_iter_has_child(self, ref): return False def on_iter_n_children(self, ref): if ref: return 0 return len(self.refs) def on_iter_nth_child(self, ref, n): if ref: return None try: return self.refs[n] except IndexError: return None def on_iter_parent(self, child): return None def get_event(self, iter): '''This allocates a record which must be freed by the caller''' try: ref = self.refs[self.get_path(iter)[0]] ev = self.trace.read_event_at(ref.offset) return ev except IndexError: return None class EventView(gtk.TreeView): def __init__(self, model): gtk.TreeView.__init__(self, model) self.set_fixed_height_mode(True) ts_col = gtk.TreeViewColumn("Time (s)") ts_col.set_sizing(gtk.TREE_VIEW_COLUMN_FIXED) ts_col.set_fixed_width(TS_COL_W) ts_cell = gtk.CellRendererText() ts_col.pack_start(ts_cell, False) ts_col.set_cell_data_func(ts_cell, self.data_func, "ts") self.append_column(ts_col) cpu_col = gtk.TreeViewColumn("CPU") cpu_col.set_sizing(gtk.TREE_VIEW_COLUMN_FIXED) cpu_col.set_fixed_width(CPU_COL_W) cpu_cell = gtk.CellRendererText() cpu_col.pack_start(cpu_cell, False) cpu_col.set_cell_data_func(cpu_cell, self.data_func, "cpu") self.append_column(cpu_col) event_col = gtk.TreeViewColumn("Event") event_col.set_sizing(gtk.TREE_VIEW_COLUMN_FIXED) event_col.set_fixed_width(EVENT_COL_W) event_cell = gtk.CellRendererText() event_col.pack_start(event_cell, False) event_col.set_cell_data_func(event_cell, self.data_func, "event") self.append_column(event_col) pid_col = gtk.TreeViewColumn("PID") pid_col.set_sizing(gtk.TREE_VIEW_COLUMN_FIXED) pid_col.set_fixed_width(PID_COL_W) pid_cell = gtk.CellRendererText() pid_col.pack_start(pid_cell, False) pid_col.set_cell_data_func(pid_cell, self.data_func, "pid") self.append_column(pid_col) comm_col = gtk.TreeViewColumn("Comm") comm_col.set_sizing(gtk.TREE_VIEW_COLUMN_FIXED) comm_col.set_fixed_width(COMM_COL_W) comm_cell = gtk.CellRendererText() comm_col.pack_start(comm_cell, False) comm_col.set_cell_data_func(comm_cell, self.data_func, "comm") self.append_column(comm_col) def data_func(self, col, cell, model, iter, data): global app, data_func_cnt ev = model.get_event(iter) #ev = model.get_value(iter, 0) if not ev: return False if data == "ts": cell.set_property("markup", "%d.%d" % (ev.ts/1000000000, ev.ts%1000000000)) data_func_cnt = data_func_cnt + 1 if app: app.inc_data_func() elif data == "cpu": cell.set_property("markup", ev.cpu) elif data == "event": cell.set_property("markup", ev.name) elif data == "pid": cell.set_property("markup", ev.pid) elif data == "comm": cell.set_property("markup", ev.comm) else: print "Unknown Column:", data return False return True class EventViewerApp(gtk.Window): def __init__(self, trace): gtk.Window.__init__(self) self.set_size_request(650, 400) self.set_position(gtk.WIN_POS_CENTER) self.connect("destroy", gtk.main_quit) self.set_title("Event Viewer") store = EventStore(trace) view = EventView(store) sw = gtk.ScrolledWindow() sw.set_policy(gtk.POLICY_NEVER, gtk.POLICY_ALWAYS) sw.add(view) # track how often the treeview data_func is called self.data_func_label = gtk.Label("0") hbox = gtk.HBox() hbox.pack_start(gtk.Label("TS Data Func Calls:"), False, False) hbox.pack_start(self.data_func_label, False, False) vbox = gtk.VBox() vbox.pack_start(hbox, False) vbox.pack_end(sw) self.add(vbox) self.show_all() def inc_data_func(self): global data_func_cnt self.data_func_label.set_text(str(data_func_cnt)) if __name__ == "__main__": if len(sys.argv) >=2: filename = sys.argv[1] else: filename = "trace.dat" print "Initializing trace..." trace = Trace(filename) print "Initializing app..." app = EventViewerApp(trace) print "Go!" gtk.main() trace-cmd-2.5.3/features.mk000066400000000000000000000017131246701203100155250ustar00rootroot00000000000000 # taken from perf which was based on Linux Kbuild # try-cc # Usage: option = $(call try-cc, source-to-build, cc-options) try-cc = $(shell sh -c \ 'TMP="$(BUILD_OUTPUT)$(TMPOUT).$$$$"; \ echo "$(1)" | \ $(CC) -x c - $(2) -o "$$TMP" > /dev/null 2>&1 && echo y; \ rm -f "$$TMP"') define SOURCE_PTRACE #include #include int main (void) { int ret; ret = ptrace(PTRACE_ATTACH, 0, NULL, 0); ptrace(PTRACE_TRACEME, 0, NULL, 0); ptrace(PTRACE_GETSIGINFO, 0, NULL, NULL); ptrace(PTRACE_GETEVENTMSG, 0, NULL, NULL); ptrace(PTRACE_SETOPTIONS, NULL, NULL, PTRACE_O_TRACEFORK | PTRACE_O_TRACEVFORK | PTRACE_O_TRACECLONE | PTRACE_O_TRACEEXIT); ptrace(PTRACE_CONT, NULL, NULL, 0); ptrace(PTRACE_DETACH, 0, NULL, NULL); ptrace(PTRACE_SETOPTIONS, 0, NULL, PTRACE_O_TRACEFORK | PTRACE_O_TRACEVFORK | PTRACE_O_TRACECLONE | PTRACE_O_TRACEEXIT); return ret; } endef trace-cmd-2.5.3/kbuffer-parse.c000066400000000000000000000421171246701203100162610ustar00rootroot00000000000000/* * Copyright (C) 2009, 2010 Red Hat Inc, Steven Rostedt * * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ * This program is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; * version 2.1 of the License (not later!) * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this program; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. * * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ */ #include #include #include #include "kbuffer.h" #define MISSING_EVENTS (1 << 31) #define MISSING_STORED (1 << 30) #define COMMIT_MASK ((1 << 27) - 1) enum { KBUFFER_FL_HOST_BIG_ENDIAN = (1<<0), KBUFFER_FL_BIG_ENDIAN = (1<<1), KBUFFER_FL_LONG_8 = (1<<2), KBUFFER_FL_OLD_FORMAT = (1<<3), }; #define ENDIAN_MASK (KBUFFER_FL_HOST_BIG_ENDIAN | KBUFFER_FL_BIG_ENDIAN) /** kbuffer * @timestamp - timestamp of current event * @lost_events - # of lost events between this subbuffer and previous * @flags - special flags of the kbuffer * @subbuffer - pointer to the sub-buffer page * @data - pointer to the start of data on the sub-buffer page * @index - index from @data to the @curr event data * @curr - offset from @data to the start of current event * (includes metadata) * @next - offset from @data to the start of next event * @size - The size of data on @data * @start - The offset from @subbuffer where @data lives * * @read_4 - Function to read 4 raw bytes (may swap) * @read_8 - Function to read 8 raw bytes (may swap) * @read_long - Function to read a long word (4 or 8 bytes with needed swap) */ struct kbuffer { unsigned long long timestamp; long long lost_events; unsigned long flags; void *subbuffer; void *data; unsigned int index; unsigned int curr; unsigned int next; unsigned int size; unsigned int start; unsigned int (*read_4)(void *ptr); unsigned long long (*read_8)(void *ptr); unsigned long long (*read_long)(struct kbuffer *kbuf, void *ptr); int (*next_event)(struct kbuffer *kbuf); }; static void *zmalloc(size_t size) { return calloc(1, size); } static int host_is_bigendian(void) { unsigned char str[] = { 0x1, 0x2, 0x3, 0x4 }; unsigned int *ptr; ptr = (unsigned int *)str; return *ptr == 0x01020304; } static int do_swap(struct kbuffer *kbuf) { return ((kbuf->flags & KBUFFER_FL_HOST_BIG_ENDIAN) + kbuf->flags) & ENDIAN_MASK; } static unsigned long long __read_8(void *ptr) { unsigned long long data = *(unsigned long long *)ptr; return data; } static unsigned long long __read_8_sw(void *ptr) { unsigned long long data = *(unsigned long long *)ptr; unsigned long long swap; swap = ((data & 0xffULL) << 56) | ((data & (0xffULL << 8)) << 40) | ((data & (0xffULL << 16)) << 24) | ((data & (0xffULL << 24)) << 8) | ((data & (0xffULL << 32)) >> 8) | ((data & (0xffULL << 40)) >> 24) | ((data & (0xffULL << 48)) >> 40) | ((data & (0xffULL << 56)) >> 56); return swap; } static unsigned int __read_4(void *ptr) { unsigned int data = *(unsigned int *)ptr; return data; } static unsigned int __read_4_sw(void *ptr) { unsigned int data = *(unsigned int *)ptr; unsigned int swap; swap = ((data & 0xffULL) << 24) | ((data & (0xffULL << 8)) << 8) | ((data & (0xffULL << 16)) >> 8) | ((data & (0xffULL << 24)) >> 24); return swap; } static unsigned long long read_8(struct kbuffer *kbuf, void *ptr) { return kbuf->read_8(ptr); } static unsigned int read_4(struct kbuffer *kbuf, void *ptr) { return kbuf->read_4(ptr); } static unsigned long long __read_long_8(struct kbuffer *kbuf, void *ptr) { return kbuf->read_8(ptr); } static unsigned long long __read_long_4(struct kbuffer *kbuf, void *ptr) { return kbuf->read_4(ptr); } static unsigned long long read_long(struct kbuffer *kbuf, void *ptr) { return kbuf->read_long(kbuf, ptr); } static int calc_index(struct kbuffer *kbuf, void *ptr) { return (unsigned long)ptr - (unsigned long)kbuf->data; } static int __next_event(struct kbuffer *kbuf); /** * kbuffer_alloc - allocat a new kbuffer * @size; enum to denote size of word * @endian: enum to denote endianness * * Allocates and returns a new kbuffer. */ struct kbuffer * kbuffer_alloc(enum kbuffer_long_size size, enum kbuffer_endian endian) { struct kbuffer *kbuf; int flags = 0; switch (size) { case KBUFFER_LSIZE_4: break; case KBUFFER_LSIZE_8: flags |= KBUFFER_FL_LONG_8; break; default: return NULL; } switch (endian) { case KBUFFER_ENDIAN_LITTLE: break; case KBUFFER_ENDIAN_BIG: flags |= KBUFFER_FL_BIG_ENDIAN; break; default: return NULL; } kbuf = zmalloc(sizeof(*kbuf)); if (!kbuf) return NULL; kbuf->flags = flags; if (host_is_bigendian()) kbuf->flags |= KBUFFER_FL_HOST_BIG_ENDIAN; if (do_swap(kbuf)) { kbuf->read_8 = __read_8_sw; kbuf->read_4 = __read_4_sw; } else { kbuf->read_8 = __read_8; kbuf->read_4 = __read_4; } if (kbuf->flags & KBUFFER_FL_LONG_8) kbuf->read_long = __read_long_8; else kbuf->read_long = __read_long_4; /* May be changed by kbuffer_set_old_format() */ kbuf->next_event = __next_event; return kbuf; } /** kbuffer_free - free an allocated kbuffer * @kbuf: The kbuffer to free * * Can take NULL as a parameter. */ void kbuffer_free(struct kbuffer *kbuf) { free(kbuf); } static unsigned int type4host(struct kbuffer *kbuf, unsigned int type_len_ts) { if (kbuf->flags & KBUFFER_FL_BIG_ENDIAN) return (type_len_ts >> 29) & 3; else return type_len_ts & 3; } static unsigned int len4host(struct kbuffer *kbuf, unsigned int type_len_ts) { if (kbuf->flags & KBUFFER_FL_BIG_ENDIAN) return (type_len_ts >> 27) & 7; else return (type_len_ts >> 2) & 7; } static unsigned int type_len4host(struct kbuffer *kbuf, unsigned int type_len_ts) { if (kbuf->flags & KBUFFER_FL_BIG_ENDIAN) return (type_len_ts >> 27) & ((1 << 5) - 1); else return type_len_ts & ((1 << 5) - 1); } static unsigned int ts4host(struct kbuffer *kbuf, unsigned int type_len_ts) { if (kbuf->flags & KBUFFER_FL_BIG_ENDIAN) return type_len_ts & ((1 << 27) - 1); else return type_len_ts >> 5; } /* * Linux 2.6.30 and earlier (not much ealier) had a different * ring buffer format. It should be obsolete, but we handle it anyway. */ enum old_ring_buffer_type { OLD_RINGBUF_TYPE_PADDING, OLD_RINGBUF_TYPE_TIME_EXTEND, OLD_RINGBUF_TYPE_TIME_STAMP, OLD_RINGBUF_TYPE_DATA, }; static unsigned int old_update_pointers(struct kbuffer *kbuf) { unsigned long long extend; unsigned int type_len_ts; unsigned int type; unsigned int len; unsigned int delta; unsigned int length; void *ptr = kbuf->data + kbuf->curr; type_len_ts = read_4(kbuf, ptr); ptr += 4; type = type4host(kbuf, type_len_ts); len = len4host(kbuf, type_len_ts); delta = ts4host(kbuf, type_len_ts); switch (type) { case OLD_RINGBUF_TYPE_PADDING: kbuf->next = kbuf->size; return 0; case OLD_RINGBUF_TYPE_TIME_EXTEND: extend = read_4(kbuf, ptr); extend <<= TS_SHIFT; extend += delta; delta = extend; ptr += 4; break; case OLD_RINGBUF_TYPE_TIME_STAMP: /* should never happen! */ kbuf->curr = kbuf->size; kbuf->next = kbuf->size; kbuf->index = kbuf->size; return -1; default: if (len) length = len * 4; else { length = read_4(kbuf, ptr); length -= 4; ptr += 4; } break; } kbuf->timestamp += delta; kbuf->index = calc_index(kbuf, ptr); kbuf->next = kbuf->index + length; return type; } static int __old_next_event(struct kbuffer *kbuf) { int type; do { kbuf->curr = kbuf->next; if (kbuf->next >= kbuf->size) return -1; type = old_update_pointers(kbuf); } while (type == OLD_RINGBUF_TYPE_TIME_EXTEND || type == OLD_RINGBUF_TYPE_PADDING); return 0; } static unsigned int translate_data(struct kbuffer *kbuf, void *data, void **rptr, unsigned long long *delta, int *length) { unsigned long long extend; unsigned int type_len_ts; unsigned int type_len; type_len_ts = read_4(kbuf, data); data += 4; type_len = type_len4host(kbuf, type_len_ts); *delta = ts4host(kbuf, type_len_ts); switch (type_len) { case KBUFFER_TYPE_PADDING: *length = read_4(kbuf, data); break; case KBUFFER_TYPE_TIME_EXTEND: extend = read_4(kbuf, data); data += 4; extend <<= TS_SHIFT; extend += *delta; *delta = extend; *length = 0; break; case KBUFFER_TYPE_TIME_STAMP: data += 12; *length = 0; break; case 0: *length = read_4(kbuf, data) - 4; *length = (*length + 3) & ~3; data += 4; break; default: *length = type_len * 4; break; } *rptr = data; return type_len; } static unsigned int update_pointers(struct kbuffer *kbuf) { unsigned long long delta; unsigned int type_len; int length; void *ptr = kbuf->data + kbuf->curr; type_len = translate_data(kbuf, ptr, &ptr, &delta, &length); kbuf->timestamp += delta; kbuf->index = calc_index(kbuf, ptr); kbuf->next = kbuf->index + length; return type_len; } /** * kbuffer_translate_data - read raw data to get a record * @swap: Set to 1 if bytes in words need to be swapped when read * @data: The raw data to read * @size: Address to store the size of the event data. * * Returns a pointer to the event data. To determine the entire * record size (record metadata + data) just add the difference between * @data and the returned value to @size. */ void *kbuffer_translate_data(int swap, void *data, unsigned int *size) { unsigned long long delta; struct kbuffer kbuf; int type_len; int length; void *ptr; if (swap) { kbuf.read_8 = __read_8_sw; kbuf.read_4 = __read_4_sw; kbuf.flags = host_is_bigendian() ? 0 : KBUFFER_FL_BIG_ENDIAN; } else { kbuf.read_8 = __read_8; kbuf.read_4 = __read_4; kbuf.flags = host_is_bigendian() ? KBUFFER_FL_BIG_ENDIAN: 0; } type_len = translate_data(&kbuf, data, &ptr, &delta, &length); switch (type_len) { case KBUFFER_TYPE_PADDING: case KBUFFER_TYPE_TIME_EXTEND: case KBUFFER_TYPE_TIME_STAMP: return NULL; }; *size = length; return ptr; } static int __next_event(struct kbuffer *kbuf) { int type; do { kbuf->curr = kbuf->next; if (kbuf->next >= kbuf->size) return -1; type = update_pointers(kbuf); } while (type == KBUFFER_TYPE_TIME_EXTEND || type == KBUFFER_TYPE_PADDING); return 0; } static int next_event(struct kbuffer *kbuf) { return kbuf->next_event(kbuf); } /** * kbuffer_next_event - increment the current pointer * @kbuf: The kbuffer to read * @ts: Address to store the next record's timestamp (may be NULL to ignore) * * Increments the pointers into the subbuffer of the kbuffer to point to the * next event so that the next kbuffer_read_event() will return a * new event. * * Returns the data of the next event if a new event exists on the subbuffer, * NULL otherwise. */ void *kbuffer_next_event(struct kbuffer *kbuf, unsigned long long *ts) { int ret; if (!kbuf || !kbuf->subbuffer) return NULL; ret = next_event(kbuf); if (ret < 0) return NULL; if (ts) *ts = kbuf->timestamp; return kbuf->data + kbuf->index; } /** * kbuffer_load_subbuffer - load a new subbuffer into the kbuffer * @kbuf: The kbuffer to load * @subbuffer: The subbuffer to load into @kbuf. * * Load a new subbuffer (page) into @kbuf. This will reset all * the pointers and update the @kbuf timestamp. The next read will * return the first event on @subbuffer. * * Returns 0 on succes, -1 otherwise. */ int kbuffer_load_subbuffer(struct kbuffer *kbuf, void *subbuffer) { unsigned long long flags; void *ptr = subbuffer; if (!kbuf || !subbuffer) return -1; kbuf->subbuffer = subbuffer; kbuf->timestamp = read_8(kbuf, ptr); ptr += 8; kbuf->curr = 0; if (kbuf->flags & KBUFFER_FL_LONG_8) kbuf->start = 16; else kbuf->start = 12; kbuf->data = subbuffer + kbuf->start; flags = read_long(kbuf, ptr); kbuf->size = (unsigned int)flags & COMMIT_MASK; if (flags & MISSING_EVENTS) { if (flags & MISSING_STORED) { ptr = kbuf->data + kbuf->size; kbuf->lost_events = read_long(kbuf, ptr); } else kbuf->lost_events = -1; } else kbuf->lost_events = 0; kbuf->index = 0; kbuf->next = 0; next_event(kbuf); return 0; } /** * kbuffer_read_event - read the next event in the kbuffer subbuffer * @kbuf: The kbuffer to read from * @ts: The address to store the timestamp of the event (may be NULL to ignore) * * Returns a pointer to the data part of the current event. * NULL if no event is left on the subbuffer. */ void *kbuffer_read_event(struct kbuffer *kbuf, unsigned long long *ts) { if (!kbuf || !kbuf->subbuffer) return NULL; if (kbuf->curr >= kbuf->size) return NULL; if (ts) *ts = kbuf->timestamp; return kbuf->data + kbuf->index; } /** * kbuffer_timestamp - Return the timestamp of the current event * @kbuf: The kbuffer to read from * * Returns the timestamp of the current (next) event. */ unsigned long long kbuffer_timestamp(struct kbuffer *kbuf) { return kbuf->timestamp; } /** * kbuffer_read_at_offset - read the event that is at offset * @kbuf: The kbuffer to read from * @offset: The offset into the subbuffer * @ts: The address to store the timestamp of the event (may be NULL to ignore) * * The @offset must be an index from the @kbuf subbuffer beginning. * If @offset is bigger than the stored subbuffer, NULL will be returned. * * Returns the data of the record that is at @offset. Note, @offset does * not need to be the start of the record, the offset just needs to be * in the record (or beginning of it). * * Note, the kbuf timestamp and pointers are updated to the * returned record. That is, kbuffer_read_event() will return the same * data and timestamp, and kbuffer_next_event() will increment from * this record. */ void *kbuffer_read_at_offset(struct kbuffer *kbuf, int offset, unsigned long long *ts) { void *data; if (offset < kbuf->start) offset = 0; else offset -= kbuf->start; /* Reset the buffer */ kbuffer_load_subbuffer(kbuf, kbuf->subbuffer); while (kbuf->curr < offset) { data = kbuffer_next_event(kbuf, ts); if (!data) break; } return data; } /** * kbuffer_subbuffer_size - the size of the loaded subbuffer * @kbuf: The kbuffer to read from * * Returns the size of the subbuffer. Note, this size is * where the last event resides. The stored subbuffer may actually be * bigger due to padding and such. */ int kbuffer_subbuffer_size(struct kbuffer *kbuf) { return kbuf->size; } /** * kbuffer_curr_index - Return the index of the record * @kbuf: The kbuffer to read from * * Returns the index from the start of the data part of * the subbuffer to the current location. Note this is not * from the start of the subbuffer. An index of zero will * point to the first record. Use kbuffer_curr_offset() for * the actually offset (that can be used by kbuffer_read_at_offset()) */ int kbuffer_curr_index(struct kbuffer *kbuf) { return kbuf->curr; } /** * kbuffer_curr_offset - Return the offset of the record * @kbuf: The kbuffer to read from * * Returns the offset from the start of the subbuffer to the * current location. */ int kbuffer_curr_offset(struct kbuffer *kbuf) { return kbuf->curr + kbuf->start; } /** * kbuffer_event_size - return the size of the event data * @kbuf: The kbuffer to read * * Returns the size of the event data (the payload not counting * the meta data of the record) of the current event. */ int kbuffer_event_size(struct kbuffer *kbuf) { return kbuf->next - kbuf->index; } /** * kbuffer_curr_size - return the size of the entire record * @kbuf: The kbuffer to read * * Returns the size of the entire record (meta data and payload) * of the current event. */ int kbuffer_curr_size(struct kbuffer *kbuf) { return kbuf->next - kbuf->curr; } /** * kbuffer_missed_events - return the # of missed events from last event. * @kbuf: The kbuffer to read from * * Returns the # of missed events (if recorded) before the current * event. Note, only events on the beginning of a subbuffer can * have missed events, all other events within the buffer will be * zero. */ int kbuffer_missed_events(struct kbuffer *kbuf) { /* Only the first event can have missed events */ if (kbuf->curr) return 0; return kbuf->lost_events; } /** * kbuffer_set_old_forma - set the kbuffer to use the old format parsing * @kbuf: The kbuffer to set * * This is obsolete (or should be). The first kernels to use the * new ring buffer had a slightly different ring buffer format * (2.6.30 and earlier). It is still somewhat supported by kbuffer, * but should not be counted on in the future. */ void kbuffer_set_old_format(struct kbuffer *kbuf) { kbuf->flags |= KBUFFER_FL_OLD_FORMAT; kbuf->next_event = __old_next_event; } /** * kbuffer_start_of_data - return offset of where data starts on subbuffer * @kbuf: The kbuffer * * Returns the location on the subbuffer where the data starts. */ int kbuffer_start_of_data(struct kbuffer *kbuf) { return kbuf->start; } trace-cmd-2.5.3/kbuffer.h000066400000000000000000000043271246701203100151570ustar00rootroot00000000000000/* * Copyright (C) 2012 Red Hat Inc, Steven Rostedt * * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ * This program is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; * version 2.1 of the License (not later!) * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this program; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. * * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ */ #ifndef _KBUFFER_H #define _KBUFFER_H #ifndef TS_SHIFT #define TS_SHIFT 27 #endif enum kbuffer_endian { KBUFFER_ENDIAN_BIG, KBUFFER_ENDIAN_LITTLE, }; enum kbuffer_long_size { KBUFFER_LSIZE_4, KBUFFER_LSIZE_8, }; enum { KBUFFER_TYPE_PADDING = 29, KBUFFER_TYPE_TIME_EXTEND = 30, KBUFFER_TYPE_TIME_STAMP = 31, }; struct kbuffer; struct kbuffer *kbuffer_alloc(enum kbuffer_long_size size, enum kbuffer_endian endian); void kbuffer_free(struct kbuffer *kbuf); int kbuffer_load_subbuffer(struct kbuffer *kbuf, void *subbuffer); void *kbuffer_read_event(struct kbuffer *kbuf, unsigned long long *ts); void *kbuffer_next_event(struct kbuffer *kbuf, unsigned long long *ts); unsigned long long kbuffer_timestamp(struct kbuffer *kbuf); void *kbuffer_translate_data(int swap, void *data, unsigned int *size); void *kbuffer_read_at_offset(struct kbuffer *kbuf, int offset, unsigned long long *ts); int kbuffer_curr_index(struct kbuffer *kbuf); int kbuffer_curr_offset(struct kbuffer *kbuf); int kbuffer_curr_size(struct kbuffer *kbuf); int kbuffer_event_size(struct kbuffer *kbuf); int kbuffer_missed_events(struct kbuffer *kbuf); int kbuffer_subbuffer_size(struct kbuffer *kbuf); void kbuffer_set_old_format(struct kbuffer *kbuf); int kbuffer_start_of_data(struct kbuffer *kbuf); #endif /* _K_BUFFER_H */ trace-cmd-2.5.3/kernel-shark.c000066400000000000000000001667141246701203100161250ustar00rootroot00000000000000/* * Copyright (C) 2009, 2010 Red Hat Inc, Steven Rostedt * * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; version 2 of the License (not later!) * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; if not, see * * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ */ #include #include #include #include #include #include #include #include #include #include #include #include #include "trace-compat.h" #include "trace-capture.h" #include "trace-cmd.h" #include "trace-gui.h" #include "kernel-shark.h" #include "event-utils.h" #include "version.h" #define ___stringify(X) #X #define __stringify(X) ___stringify(X) #define DEBUG_LEVEL 0 #if DEBUG_LEVEL > 0 # define dprintf(l, x...) \ do { \ if (l <= DEBUG_LEVEL) \ printf(x); \ } while (0) #else # define dprintf(l, x...) do { if (0) printf(x); } while (0) #endif #define TRACE_WIDTH 800 #define TRACE_HEIGHT 600 #define default_input_file "trace.dat" static char *input_file; void usage(char *prog) { printf("Usage: %s\n", prog); printf(" -h Display this help message\n"); printf(" -v Display version and exit\n"); printf(" -i input_file, default is %s\n", default_input_file); } static gboolean display_warnings; /* * trace_sync_select_menu - helper function to the syncing of list and graph filters * * Creates a pop up dialog with the selections given. The selections will be * radio buttons to the user. The keep is a value that will be set to the check * box (default on) if the user wants to keep the selection persistant. */ static int trace_sync_select_menu(const gchar *title, gchar **selections, gboolean *keep) { GtkWidget *dialog; GtkWidget *radio; GtkWidget *check; GSList *group; int result; int i; dialog = gtk_dialog_new_with_buttons(title, NULL, GTK_DIALOG_MODAL, "OK", GTK_RESPONSE_ACCEPT, GTK_STOCK_CANCEL, GTK_RESPONSE_CANCEL, NULL); radio = gtk_radio_button_new_with_label(NULL, selections[0]); gtk_box_pack_start(GTK_BOX(GTK_DIALOG(dialog)->vbox), radio, TRUE, TRUE, 0); gtk_widget_show(radio); group = gtk_radio_button_get_group(GTK_RADIO_BUTTON(radio)); for (i = 1; selections[i]; i++) { radio = gtk_radio_button_new_with_label(group, selections[i]); gtk_box_pack_start(GTK_BOX(GTK_DIALOG(dialog)->vbox), radio, TRUE, TRUE, 0); gtk_widget_show(radio); } check = gtk_check_button_new_with_label("Keep the filters in sync?"); gtk_box_pack_start(GTK_BOX(GTK_DIALOG(dialog)->vbox), check, TRUE, TRUE, 0); gtk_widget_show(check); gtk_toggle_button_set_active(GTK_TOGGLE_BUTTON(check), TRUE); result = gtk_dialog_run(GTK_DIALOG(dialog)); switch (result) { case GTK_RESPONSE_ACCEPT: i = 0; for (i = 0; group; i++, group = g_slist_next(group)) { radio = group->data; if (gtk_toggle_button_get_active(GTK_TOGGLE_BUTTON(radio))) break; } result = i; *keep = gtk_toggle_button_get_active(GTK_TOGGLE_BUTTON(check)); break; default: result = -1; } gtk_widget_destroy(dialog); return result; } static void update_tree_view_filters(struct shark_info *info, struct filter_task *task_filter, struct filter_task *hide_tasks) { if (info->list_filter_enabled) trace_view_update_filters(info->treeview, task_filter, hide_tasks); if (filter_task_count(task_filter) || filter_task_count(hide_tasks)) info->list_filter_available = 1; else { info->list_filter_enabled = 0; info->list_filter_available = 0; } } /* graph callbacks */ /* convert_nano() and print_time() are copied from trace-graph.c for debugging purposes, and should be deleted when this is complete (or merged with trace-graph.c */ static void convert_nano(unsigned long long time, unsigned long *sec, unsigned long *usec) { *sec = time / 1000000000ULL; *usec = (time / 1000) % 1000000; } static void print_time(unsigned long long time) { unsigned long sec, usec; if (!DEBUG_LEVEL) return; convert_nano(time, &sec, &usec); printf("%lu.%06lu", sec, usec); } static void ks_graph_select(struct graph_info *ginfo, guint64 cursor) { struct graph_callbacks *cbs; struct shark_info *info; dprintf(1, "Cursor: "); print_time(cursor); dprintf(1, " selected\n"); cbs = trace_graph_get_callbacks(ginfo); info = container_of(cbs, struct shark_info, graph_cbs); trace_view_select(info->treeview, cursor); } static void ks_graph_filter(struct graph_info *ginfo, struct filter_task *task_filter, struct filter_task *hide_tasks) { struct graph_callbacks *cbs; struct shark_info *info; cbs = trace_graph_get_callbacks(ginfo); info = container_of(cbs, struct shark_info, graph_cbs); if (!info->sync_task_filters) return; update_tree_view_filters(info, task_filter, hide_tasks); } static void free_info(struct shark_info *info) { tracecmd_close(info->handle); trace_graph_free_info(info->ginfo); filter_task_hash_free(info->list_task_filter); filter_task_hash_free(info->list_hide_tasks); kernel_shark_clear_capture(info); free(info->current_filter); free(info->ginfo); free(info); } static void update_title(GtkWidget *window, const gchar *file) { GString *gstr; gchar *str; gstr = g_string_new("kernelshark"); g_string_append_printf(gstr, "(%s)", basename(file)); str = g_string_free(gstr, FALSE); gtk_window_set_title(GTK_WINDOW(window), str); g_free(str); } static void unsync_task_filters(struct shark_info *info) { info->sync_task_filters = 0; gtk_menu_item_set_label(GTK_MENU_ITEM(info->task_sync_menu), "Sync Graph and List Task Filters"); gtk_menu_item_set_label(GTK_MENU_ITEM(info->graph_task_menu), "graph tasks"); gtk_menu_item_set_label(GTK_MENU_ITEM(info->graph_hide_task_menu), "graph hide tasks"); gtk_widget_show(info->list_task_menu); gtk_widget_show(info->list_hide_task_menu); /* The list now uses its own hash */ info->list_task_filter = filter_task_hash_copy(info->ginfo->task_filter); info->list_hide_tasks = filter_task_hash_copy(info->ginfo->hide_tasks); } static void sync_task_filters(struct shark_info *info) { info->sync_task_filters = 1; gtk_menu_item_set_label(GTK_MENU_ITEM(info->task_sync_menu), "Unsync Graph and List Task Filters"); gtk_menu_item_set_label(GTK_MENU_ITEM(info->graph_task_menu), "tasks"); gtk_menu_item_set_label(GTK_MENU_ITEM(info->graph_hide_task_menu), "hide tasks"); gtk_widget_hide(info->list_task_menu); gtk_widget_hide(info->list_hide_task_menu); } static void unsync_event_filters(struct shark_info *info) { info->sync_event_filters = 0; gtk_menu_item_set_label(GTK_MENU_ITEM(info->events_sync_menu), "Sync Graph and List Event Filters"); gtk_menu_item_set_label(GTK_MENU_ITEM(info->graph_events_menu), "graph events"); gtk_menu_item_set_label(GTK_MENU_ITEM(info->graph_adv_events_menu), "graph advanced events"); gtk_widget_show(info->list_events_menu); gtk_widget_show(info->list_adv_events_menu); } static void sync_event_filters(struct shark_info *info) { info->sync_event_filters = 1; gtk_menu_item_set_label(GTK_MENU_ITEM(info->events_sync_menu), "Unsync Graph and List Event Filters"); gtk_menu_item_set_label(GTK_MENU_ITEM(info->graph_events_menu), "events"); gtk_menu_item_set_label(GTK_MENU_ITEM(info->graph_adv_events_menu), "advanced events"); gtk_widget_hide(info->list_events_menu); gtk_widget_hide(info->list_adv_events_menu); } static void alt_warn(const char *fmt, va_list ap) { display_warnings = TRUE; vpr_stat(fmt, ap); } /** * kernelshark_load_file - load a new file into kernelshark * @info: the kernelshark descriptor * @file: the file to load * * Returns: 0 on success, -1 on error */ int kernelshark_load_file(struct shark_info *info, const char *file) { struct tracecmd_input *handle; /* * Have warnings go into the status bar. If we had any * warnings, pop up a message at the end. */ display_warnings = 0; pr_stat("\nLoading file %s", file); trace_dialog_register_alt_warning(alt_warn); handle = tracecmd_open(file); trace_dialog_register_alt_warning(NULL); if (display_warnings) { errno = 0; warning("Warnings occurred on loading.\n" "See display status for details"); } if (!handle) return -1; tracecmd_close(info->handle); info->handle = handle; trace_graph_load_handle(info->ginfo, handle); trace_view_reload(info->treeview, handle, info->spin); update_title(info->window, file); return 0; } static void /* Callback for the clicked signal of the Load button */ load_clicked (gpointer data) { struct shark_info *info = data; gchar *filename; filename = trace_get_file_dialog_filter("Load File", NULL, TRACE_DIALOG_FILTER_DATA, FALSE); if (!filename) return; kernelshark_load_file(info, filename); g_free(filename); } static GString *get_home_filters_new(void) { char *path = getenv("HOME"); GString *str; str = g_string_new(path); g_string_append(str, "/.trace-cmd/filters/"); return str; } static int create_home_filters(void) { char *path = getenv("HOME"); GString *str; struct stat st; int ret; str = g_string_new(path); g_string_append(str, "/.trace-cmd"); ret = stat(str->str, &st); if (ret < 0) { ret = mkdir(str->str, 0755); if (ret < 0) { warning("Can not create %s", str->str); goto out; } } g_string_append(str, "/filters"); ret = stat(str->str, &st); if (ret < 0) { ret = mkdir(str->str, 0755); if (ret < 0) { warning("Can not create %s", str->str); goto out; } } ret = 0; out: g_string_free(str, TRUE); return ret; } static void load_filter(struct shark_info *info, const char *filename) { struct graph_info *ginfo = info->ginfo; GtkTreeView *trace_tree = GTK_TREE_VIEW(info->treeview); GtkTreeModel *model; TraceViewStore *store; struct tracecmd_xml_handle *handle; struct filter_task *task_filter; struct filter_task *hide_tasks; struct event_filter *event_filter; int ret; handle = tracecmd_xml_open(filename); if (!handle) { warning("Could not open %s", filename); return; } /* Unsync the list and graph filters */ if (info->sync_task_filters) unsync_task_filters(info); if (info->sync_event_filters) unsync_event_filters(info); ret = tracecmd_xml_system_exists(handle, "GraphTaskFilter"); if (ret) { filter_task_clear(ginfo->task_filter); filter_task_clear(ginfo->hide_tasks); trace_filter_load_filters(handle, "GraphTaskFilter", ginfo->task_filter, ginfo->hide_tasks); trace_graph_refresh_filters(ginfo); } ret = tracecmd_xml_system_exists(handle, "ListTaskFilter"); if (ret) { task_filter = info->list_task_filter; hide_tasks = info->list_hide_tasks; filter_task_clear(task_filter); filter_task_clear(hide_tasks); trace_filter_load_filters(handle, "ListTaskFilter", task_filter, hide_tasks); update_tree_view_filters(info, task_filter, hide_tasks); } trace_graph_load_filters(ginfo, handle); ret = trace_view_load_filters(handle, trace_tree); tracecmd_xml_close(handle); /* * If the events or tasks filters are the same for both * the list and graph, then sync them back. */ if (filter_task_compare(ginfo->task_filter, info->list_task_filter) && filter_task_compare(ginfo->hide_tasks, info->list_hide_tasks)) sync_task_filters(info); model = gtk_tree_view_get_model(trace_tree); if (!model) return; store = TRACE_VIEW_STORE(model); event_filter = trace_view_store_get_event_filter(store); if (pevent_filter_compare(event_filter, ginfo->event_filter)) sync_event_filters(info); } static void load_filter_clicked(GtkMenuItem *item, gpointer data) { struct shark_info *info = data; const char *name; GString *path; name = gtk_menu_item_get_label(item); path = get_home_filters_new(); g_string_append_printf(path, "/%s.ksf", name); load_filter(info, path->str); g_string_free(path, TRUE); free(info->current_filter); info->current_filter = strdup(name); } /* Callback for the clicked signal of the Load Filters button */ static void import_filters_clicked (gpointer data) { struct shark_info *info = data; gchar *filename; filename = trace_get_file_dialog_filter("Load Filters", NULL, TRACE_DIALOG_FILTER_FILTER, FALSE); if (!filename) return; load_filter(info, filename); } static void save_filters(struct shark_info *info, const char *filename) { struct graph_info *ginfo = info->ginfo; struct tracecmd_xml_handle *handle; GtkTreeView *trace_tree = GTK_TREE_VIEW(info->treeview); struct filter_task *task_filter; struct filter_task *hide_tasks; handle = tracecmd_xml_create(filename, VERSION_STRING); if (!handle) { warning("Could not create %s", filename); return; } trace_view_save_filters(handle, trace_tree); trace_graph_save_filters(ginfo, handle); trace_filter_save_filters(handle, "GraphTaskFilter", ginfo->task_filter, ginfo->hide_tasks); if (info->sync_task_filters) { task_filter = ginfo->task_filter; hide_tasks = ginfo->hide_tasks; } else { task_filter = info->list_task_filter; hide_tasks = info->list_hide_tasks; } trace_filter_save_filters(handle, "ListTaskFilter", task_filter, hide_tasks); tracecmd_xml_close(handle); } /* Callback for the clicked signal of the Save Filters button */ static void export_filters_clicked (gpointer data) { struct shark_info *info = data; gchar *filename; filename = trace_get_file_dialog_filter("Save Filters", "Save", TRACE_DIALOG_FILTER_FILTER, TRUE); if (!filename) return; save_filters(info, filename); g_free(filename); } static void update_load_filter(struct shark_info *info) { struct dirent *dent; struct stat st; DIR *dir; GtkWidget *menu; GtkWidget *sub_item; GString *path; int ret; path = get_home_filters_new(); menu = gtk_menu_new(); ret = stat(path->str, &st); if (ret < 0 || !S_ISDIR(st.st_mode)) goto update_rest; dir = opendir(path->str); if (!dir) goto update_rest; while ((dent = readdir(dir))) { const char *name = dent->d_name; GString *file; gchar *item; if (strcmp(name, ".") == 0 || strcmp(name, "..") == 0) continue; if (strcmp(name + strlen(name) - 4, ".ksf") != 0) continue; file = g_string_new(path->str); g_string_append_printf(file, "/%s", name); /* Save the file name but remove the .kss extention */ item = g_strdup(name); item[strlen(name) - 4] = 0; sub_item = gtk_menu_item_new_with_label(item); gtk_menu_shell_append(GTK_MENU_SHELL (menu), sub_item); gtk_widget_show(sub_item); g_signal_connect(G_OBJECT (sub_item), "activate", G_CALLBACK (load_filter_clicked), (gpointer) info); g_free(item); g_string_free(file, TRUE); } update_rest: g_string_free(path, TRUE); /* --- File - Load Filter - Filters --- */ sub_item = gtk_menu_item_new_with_label("Import Filter"); g_signal_connect_swapped (G_OBJECT (sub_item), "activate", G_CALLBACK (import_filters_clicked), (gpointer) info); /* Add them to the menu */ gtk_menu_shell_append(GTK_MENU_SHELL (menu), sub_item); /* We do need to show menu items */ gtk_widget_show(sub_item); gtk_menu_item_set_submenu(GTK_MENU_ITEM (info->load_filter_menu), menu); } /* Callback for the clicked signal of the Save Filters button */ static void save_filter_clicked (gpointer data) { struct shark_info *info = data; struct stat st; GtkWidget *dialog; GtkWidget *hbox; GtkWidget *label; GtkWidget *entry; GString *file; const char *name; gint result; int ret; dialog = gtk_dialog_new_with_buttons("Save Filter", NULL, GTK_DIALOG_MODAL, GTK_STOCK_OK, GTK_RESPONSE_ACCEPT, GTK_STOCK_CANCEL, GTK_RESPONSE_REJECT, NULL); hbox = gtk_hbox_new(FALSE, 0); gtk_box_pack_start(GTK_BOX(GTK_DIALOG(dialog)->vbox), hbox, FALSE, FALSE, 0); gtk_widget_show(hbox); label = gtk_label_new("Filter Name: "); gtk_box_pack_start(GTK_BOX(hbox), label, FALSE, FALSE, 0); gtk_widget_show(label); entry = gtk_entry_new(); gtk_box_pack_start(GTK_BOX(hbox), entry, FALSE, FALSE, 0); gtk_widget_show(entry); if (info->current_filter) gtk_entry_set_text(GTK_ENTRY(entry), info->current_filter); again: result = gtk_dialog_run(GTK_DIALOG(dialog)); switch (result) { case GTK_RESPONSE_ACCEPT: name = gtk_entry_get_text(GTK_ENTRY(entry)); if (!name || !has_text(name)) { warning("Must enter a name"); goto again; } /* Make sure home settings exists */ if (create_home_filters() < 0) break; file = get_home_filters_new(); g_string_append_printf(file, "/%s.ksf", name); ret = stat(file->str, &st); if (ret >= 0) { ret = trace_dialog(GTK_WINDOW(dialog), TRACE_GUI_ASK, "The Filter '%s' already exists.\n" "Are you sure you want to replace it", name); if (ret == GTK_RESPONSE_NO) { g_string_free(file, TRUE); goto again; } } save_filters(info, file->str); free(info->current_filter); info->current_filter = strdup(name); update_load_filter(info); g_string_free(file, TRUE); break; case GTK_RESPONSE_REJECT: break; default: break; }; gtk_widget_destroy(dialog); } /* Callback for the clicked signal of the Exit button */ static void exit_clicked (gpointer data) { struct shark_info *info = data; gtk_widget_destroy (info->window); /* the user data points to the main window */ free_info(info); gtk_main_quit (); } /* Callback for the delete_event signal of the main application window */ static gint delete_event (GtkWidget *widget, GdkEvent *event, gpointer data) { struct shark_info *info = data; gtk_widget_destroy (widget); /* destroy the main window */ free_info(info); gtk_main_quit (); return TRUE; } /* Callback for the clicked signal of the tasks sync filter button */ static void sync_task_filter_clicked (GtkWidget *subitem, gpointer data) { struct shark_info *info = data; struct filter_task *task_filter; struct filter_task *hide_tasks; GtkTreeView *trace_tree = GTK_TREE_VIEW(info->treeview); GtkTreeModel *model; TraceViewStore *store; gboolean keep; gchar *selections[] = { "Sync List Filter with Graph Filter", "Sync Graph Filter with List Filter", NULL }; int result; if (info->sync_task_filters) { /* Separate the List and Graph filters */ unsync_task_filters(info); return; } model = gtk_tree_view_get_model(trace_tree); if (!model) return; store = TRACE_VIEW_STORE(model); /* If they are already equal, then just perminently sync them */ if (filter_task_compare(info->ginfo->task_filter, info->list_task_filter) && filter_task_compare(info->ginfo->hide_tasks, info->list_hide_tasks)) result = 2; else /* Ask user which way to sync */ result = trace_sync_select_menu("Sync Task Filters", selections, &keep); switch (result) { case 0: /* Sync List Filter with Graph Filter */ filter_task_hash_free(info->list_task_filter); filter_task_hash_free(info->list_hide_tasks); info->list_task_filter = NULL; info->list_hide_tasks = NULL; task_filter = info->ginfo->task_filter; hide_tasks = info->ginfo->hide_tasks; if (!keep) { info->list_task_filter = filter_task_hash_copy(task_filter); info->list_hide_tasks = filter_task_hash_copy(hide_tasks); } update_tree_view_filters(info, task_filter, hide_tasks); break; case 1: /* Sync Graph Filter with List Filter */ trace_graph_update_filters(info->ginfo, info->list_task_filter, info->list_hide_tasks); if (keep) { filter_task_hash_free(info->list_task_filter); filter_task_hash_free(info->list_hide_tasks); info->list_task_filter = NULL; info->list_hide_tasks = NULL; } break; case 2: keep = 1; break; default: keep = 0; } if (keep) sync_task_filters(info); } /* Callback for the clicked signal of the events sync filter button */ static void sync_events_filter_clicked (GtkWidget *subitem, gpointer data) { struct shark_info *info = data; struct graph_info *ginfo = info->ginfo; struct event_filter *event_filter; GtkTreeView *trace_tree = GTK_TREE_VIEW(info->treeview); GtkTreeModel *model; TraceViewStore *store; gboolean keep; gboolean all_events; gchar *selections[] = { "Sync List Filter with Graph Filter", "Sync Graph Filter with List Filter", NULL }; int result; if (info->sync_event_filters) { /* Separate the List and Graph filters */ unsync_event_filters(info); return; } model = gtk_tree_view_get_model(trace_tree); if (!model) return; store = TRACE_VIEW_STORE(model); event_filter = trace_view_store_get_event_filter(store); /* If they are already equal, then just perminently sync them */ if (pevent_filter_compare(event_filter, ginfo->event_filter)) result = 2; else /* Ask user which way to sync */ result = trace_sync_select_menu("Sync Event Filters", selections, &keep); switch (result) { case 0: /* Sync List Filter with Graph Filter */ all_events = ginfo->all_events; trace_view_copy_filter(info->treeview, all_events, ginfo->event_filter); break; case 1: /* Sync Graph Filter with List Filter */ all_events = trace_view_store_get_all_events_enabled(store); trace_graph_copy_filter(info->ginfo, all_events, event_filter); break; case 2: keep = 1; break; default: keep = 0; } if (keep) sync_event_filters(info); } static void filter_list_enable_clicked (gpointer data); static void __update_list_task_filter_callback(struct shark_info *info, gboolean accept, gint *selected, struct filter_task *task_filter) { GtkTreeView *trace_tree = GTK_TREE_VIEW(info->treeview); GtkTreeModel *model; TraceViewStore *store; int i; if (!accept) return; model = gtk_tree_view_get_model(trace_tree); if (!model) return; store = TRACE_VIEW_STORE(model); filter_task_clear(task_filter); if (selected) { for (i = 0; selected[i] >= 0; i++) filter_task_add_pid(task_filter, selected[i]); } update_tree_view_filters(info, info->list_task_filter, info->list_hide_tasks); /* * The menu filters always enable the filters. */ if (info->list_filter_available && !info->list_filter_enabled) filter_list_enable_clicked(info); } static void update_list_task_filter_callback(gboolean accept, gint *selected, gint *non_select, gpointer data) { struct shark_info *info = data; __update_list_task_filter_callback(info, accept, selected, info->list_task_filter); } static void update_list_hide_task_filter_callback(gboolean accept, gint *selected, gint *non_select, gpointer data) { struct shark_info *info = data; __update_list_task_filter_callback(info, accept, selected, info->list_hide_tasks); } /* Callback for the clicked signal of the List Tasks filter button */ static void __list_tasks_clicked (struct shark_info *info, struct filter_task *task_filter, trace_task_cb_func func) { GtkTreeView *trace_tree = GTK_TREE_VIEW(info->treeview); struct graph_info *ginfo = info->ginfo; GtkTreeModel *model; TraceViewStore *store; gint *selected; gint *tasks; if (!ginfo->handle) return; model = gtk_tree_view_get_model(trace_tree); if (!model) return; store = TRACE_VIEW_STORE(model); tasks = trace_graph_task_list(ginfo); selected = filter_task_pids(task_filter); trace_task_dialog(info->handle, tasks, selected, func, info); free(tasks); free(selected); } static void list_tasks_clicked (gpointer data) { struct shark_info *info = data; __list_tasks_clicked(info, info->list_task_filter, update_list_task_filter_callback); } static void list_hide_tasks_clicked (gpointer data) { struct shark_info *info = data; __list_tasks_clicked(info, info->list_hide_tasks, update_list_hide_task_filter_callback); } static void __update_graph_task_filter_callback(struct shark_info *info, gboolean accept, gint *selected, struct filter_task *task_filter) { struct graph_info *ginfo = info->ginfo; int i; if (!accept) return; filter_task_clear(task_filter); if (selected) { for (i = 0; selected[i] >= 0; i++) filter_task_add_pid(task_filter, selected[i]); } trace_graph_refresh_filters(ginfo); /* * The menu filters always enable the filters. */ if (ginfo->filter_available) { if (!ginfo->filter_enabled) trace_graph_filter_toggle(info->ginfo); if (info->sync_task_filters && !info->list_filter_enabled) filter_list_enable_clicked(info); } } static void update_graph_task_filter_callback(gboolean accept, gint *selected, gint *non_select, gpointer data) { struct shark_info *info = data; struct graph_info *ginfo = info->ginfo; __update_graph_task_filter_callback(info, accept, selected, ginfo->task_filter); } static void update_graph_hide_task_filter_callback(gboolean accept, gint *selected, gint *non_select, gpointer data) { struct shark_info *info = data; struct graph_info *ginfo = info->ginfo; __update_graph_task_filter_callback(info, accept, selected, ginfo->hide_tasks); } /* Callback for the clicked signal of the Tasks filter button */ static void __graph_tasks_clicked (struct shark_info *info, struct filter_task *task_filter, trace_task_cb_func func) { struct graph_info *ginfo = info->ginfo; gint *selected; gint *tasks; if (!ginfo->handle) return; tasks = trace_graph_task_list(ginfo); selected = filter_task_pids(task_filter); trace_task_dialog(ginfo->handle, tasks, selected, func, info); free(tasks); free(selected); } static void graph_tasks_clicked (gpointer data) { struct shark_info *info = data; struct graph_info *ginfo = info->ginfo; __graph_tasks_clicked(info, ginfo->task_filter, update_graph_task_filter_callback); } static void graph_hide_tasks_clicked (gpointer data) { struct shark_info *info = data; struct graph_info *ginfo = info->ginfo; __graph_tasks_clicked(info, ginfo->hide_tasks, update_graph_hide_task_filter_callback); } /* Callback for the clicked signal of the Events filter button */ static void list_events_clicked (gpointer data) { struct shark_info *info = data; struct event_filter *event_filter; GtkTreeView *trace_tree = GTK_TREE_VIEW(info->treeview); GtkTreeModel *model; TraceViewStore *store; gboolean all_events; model = gtk_tree_view_get_model(trace_tree); if (!model) return; store = TRACE_VIEW_STORE(model); all_events = trace_view_store_get_all_events_enabled(store); event_filter = trace_view_store_get_event_filter(store); /* * This menu is not available when in sync, so we * can call the treeview callback directly. */ trace_filter_event_filter_dialog(store->handle, event_filter, all_events, trace_view_event_filter_callback, info->treeview); } static void graph_event_filter_callback(gboolean accept, gboolean all_events, gchar **systems, gint *events, gpointer data) { struct shark_info *info = data; trace_graph_event_filter_callback(accept, all_events, systems, events, info->ginfo); if (info->sync_event_filters) trace_view_event_filter_callback(accept, all_events, systems, events, info->treeview); } static void graph_events_clicked (gpointer data) { struct shark_info *info = data; struct graph_info *ginfo = info->ginfo; gboolean all_events; all_events = ginfo->all_events; trace_filter_event_filter_dialog(info->handle, ginfo->event_filter, all_events, graph_event_filter_callback, info); } /* Callback for the clicked signal of the List advanced filter button */ static void adv_list_filter_clicked (gpointer data) { struct shark_info *info = data; struct event_filter *event_filter; GtkTreeView *trace_tree = GTK_TREE_VIEW(info->treeview); GtkTreeModel *model; TraceViewStore *store; model = gtk_tree_view_get_model(trace_tree); if (!model) return; store = TRACE_VIEW_STORE(model); event_filter = trace_view_store_get_event_filter(store); /* * This menu is not available when in sync, so we * can call the treeview callback directly. */ trace_adv_filter_dialog(store->handle, event_filter, trace_view_adv_filter_callback, trace_tree); } static void graph_adv_filter_callback(gboolean accept, const gchar *text, gint *event_ids, gpointer data) { struct shark_info *info = data; struct graph_info *ginfo = info->ginfo; trace_graph_adv_filter_callback(accept, text, event_ids, ginfo); if (info->sync_event_filters) trace_view_adv_filter_callback(accept, text, event_ids, info->treeview); } /* Callback for the clicked signal of the Graph advanced filter button */ static void adv_graph_filter_clicked (gpointer data) { struct shark_info *info = data; struct graph_info *ginfo = info->ginfo; trace_adv_filter_dialog(ginfo->handle, ginfo->event_filter, graph_adv_filter_callback, info); } /* Callback for the clicked signal of the CPUs filter button */ static void cpus_clicked (gpointer data) { struct shark_info *info = data; GtkTreeView *trace_tree = GTK_TREE_VIEW(info->treeview); TraceViewStore *store; gboolean all_cpus; guint64 *cpu_mask; if (!info->handle) return; store = TRACE_VIEW_STORE(gtk_tree_view_get_model(trace_tree)); all_cpus = trace_view_store_get_all_cpus(store); cpu_mask = trace_view_store_get_cpu_mask(store); trace_filter_cpu_dialog(all_cpus, cpu_mask, trace_view_store_get_cpus(store), trace_view_cpu_filter_callback, trace_tree); } /* Callback for the clicked signal of the plot CPUs button */ static void plot_cpu_clicked (gpointer data) { struct shark_info *info = data; struct graph_info *ginfo = info->ginfo; gboolean all_cpus; guint64 *cpu_mask; if (!ginfo->handle) return; graph_plot_cpus_plotted(ginfo, &all_cpus, &cpu_mask); trace_filter_cpu_dialog(all_cpus, cpu_mask, ginfo->cpus, graph_plot_cpus_update_callback, ginfo); g_free(cpu_mask); } /* Callback for the clicked signal of the plot tasks button */ static void plot_tasks_clicked (gpointer data) { struct shark_info *info = data; struct graph_info *ginfo = info->ginfo; gint *selected; gint *tasks; if (!ginfo->handle) return; tasks = trace_graph_task_list(ginfo); graph_plot_task_plotted(ginfo, &selected); trace_task_dialog(ginfo->handle, tasks, selected, graph_plot_task_update_callback, ginfo); free(tasks); free(selected); } /* Callback for the clicked signal of the help contents button */ static void help_content_clicked (gpointer data) { struct shark_info *info = data; GError *error = NULL; gchar *link; link = "file://" __stringify(HELP_DIR) "/index.html"; trace_show_help(info->window, link, &error); } /* Callback for the clicked signal of the help about button */ static void help_about_clicked (gpointer data) { struct shark_info *info = data; trace_dialog(GTK_WINDOW(info->window), TRACE_GUI_INFO, "KernelShark\n\n" "version %s\n\n" "Copyright (C) 2009, 2010 Red Hat Inc\n\n" " Author: Steven Rostedt ", VERSION_STRING); } static void graph_follows_tree(struct shark_info *info, GtkTreeView *treeview, GtkTreePath *path) { TraceViewRecord *rec; GtkTreeModel *model; gchar *spath; guint64 time; gint row; model = gtk_tree_view_get_model(treeview); /* This can be called when we NULL out the model */ if (!model) return; spath = gtk_tree_path_to_string(path); row = atoi(spath); g_free(spath); rec = trace_view_store_get_visible_row(TRACE_VIEW_STORE(model), row); time = rec->timestamp; trace_graph_select_by_time(info->ginfo, time); } static void row_double_clicked(GtkTreeView *treeview, GtkTreePath *path, GtkTreeViewColumn *col, gpointer data) { struct shark_info *info = data; graph_follows_tree(info, treeview, path); } static void cursor_changed(GtkTreeView *treeview, gpointer data) { struct shark_info *info = data; GtkTreePath *path; if (!info->graph_follows) return; gtk_tree_view_get_cursor(treeview, &path, NULL); if (!path) return; graph_follows_tree(info, treeview, path); gtk_tree_path_free(path); } static void filter_graph_enable_clicked (gpointer data) { struct shark_info *info = data; trace_graph_filter_toggle(info->ginfo); } static void filter_list_enable_clicked (gpointer data) { struct shark_info *info = data; struct filter_task *task_filter; struct filter_task *hide_tasks; info->list_filter_enabled ^= 1; if (info->sync_task_filters) { task_filter = info->ginfo->task_filter; hide_tasks = info->ginfo->hide_tasks; } else { task_filter = info->list_task_filter; hide_tasks = info->list_hide_tasks; } if (info->list_filter_enabled) trace_view_update_filters(info->treeview, task_filter, hide_tasks); else trace_view_update_filters(info->treeview, NULL, NULL); } static void filter_update_list_filter(struct shark_info *info, struct filter_task *filter, struct filter_task *other_filter) { struct filter_task_item *task; int pid = info->selected_task; task = filter_task_find_pid(filter, pid); if (task) { filter_task_remove_pid(filter, pid); if (!filter_task_count(filter) && !filter_task_count(other_filter)) { info->list_filter_enabled = 0; info->list_filter_available = 0; } } else { filter_task_add_pid(filter, pid); info->list_filter_available = 1; } } static void filter_add_task_clicked (gpointer data) { struct shark_info *info = data; int pid = info->selected_task; if (info->sync_task_filters) { trace_graph_filter_add_remove_task(info->ginfo, pid); return; } filter_update_list_filter(info, info->list_task_filter, info->list_hide_tasks); trace_view_update_filters(info->treeview, info->list_task_filter, info->list_hide_tasks); } static void filter_graph_add_task_clicked (gpointer data) { struct shark_info *info = data; trace_graph_filter_add_remove_task(info->ginfo, info->selected_task); } static void filter_hide_task_clicked (gpointer data) { struct shark_info *info = data; if (info->sync_task_filters) { trace_graph_filter_hide_show_task(info->ginfo, info->selected_task); return; } filter_update_list_filter(info, info->list_hide_tasks, info->list_task_filter); trace_view_update_filters(info->treeview, info->list_task_filter, info->list_hide_tasks); } static void filter_graph_hide_task_clicked (gpointer data) { struct shark_info *info = data; trace_graph_filter_hide_show_task(info->ginfo, info->selected_task); } static void filter_clear_tasks_clicked (gpointer data) { struct shark_info *info = data; if (info->sync_task_filters) { trace_graph_clear_tasks(info->ginfo); return; } filter_task_clear(info->list_task_filter); filter_task_clear(info->list_hide_tasks); trace_view_update_filters(info->treeview, NULL, NULL); info->list_filter_available = 0; info->list_filter_enabled = 0; } static void filter_graph_clear_tasks_clicked (gpointer data) { struct shark_info *info = data; trace_graph_clear_tasks(info->ginfo); } static void graph_check_toggle(gpointer data, GtkWidget *widget) { struct shark_info *info = data; info->graph_follows = gtk_toggle_button_get_active(GTK_TOGGLE_BUTTON(widget)); } static void set_menu_label(GtkWidget *menu, const char *comm, int pid, const char *fmt) { int len = strlen(comm) + strlen(fmt) + 50; char text[len]; snprintf(text, len, fmt, comm, pid); gtk_menu_item_set_label(GTK_MENU_ITEM(menu), text); } static gboolean do_tree_popup(GtkWidget *widget, GdkEventButton *event, gpointer data) { struct shark_info *info = data; struct graph_info *ginfo = info->ginfo; static GtkWidget *menu; static GtkWidget *menu_filter_graph_enable; static GtkWidget *menu_filter_list_enable; static GtkWidget *menu_filter_add_task; static GtkWidget *menu_filter_hide_task; static GtkWidget *menu_filter_clear_tasks; static GtkWidget *menu_filter_graph_add_task; static GtkWidget *menu_filter_graph_hide_task; static GtkWidget *menu_filter_graph_clear_tasks; struct pevent_record *record; TraceViewRecord *vrec; GtkTreeModel *model; const char *comm; gint pid; gint len; guint64 offset; gint row; gint cpu; if (!menu) { menu = gtk_menu_new(); menu_filter_graph_enable = gtk_menu_item_new_with_label("Enable Graph Task Filter"); gtk_widget_show(menu_filter_graph_enable); gtk_menu_shell_append(GTK_MENU_SHELL (menu), menu_filter_graph_enable); g_signal_connect_swapped (G_OBJECT (menu_filter_graph_enable), "activate", G_CALLBACK (filter_graph_enable_clicked), data); menu_filter_list_enable = gtk_menu_item_new_with_label("Enable List Task Filter"); gtk_widget_show(menu_filter_list_enable); gtk_menu_shell_append(GTK_MENU_SHELL (menu), menu_filter_list_enable); g_signal_connect_swapped (G_OBJECT (menu_filter_list_enable), "activate", G_CALLBACK (filter_list_enable_clicked), data); menu_filter_add_task = gtk_menu_item_new_with_label("Add Task"); gtk_widget_show(menu_filter_add_task); gtk_menu_shell_append(GTK_MENU_SHELL (menu), menu_filter_add_task); g_signal_connect_swapped (G_OBJECT (menu_filter_add_task), "activate", G_CALLBACK (filter_add_task_clicked), data); menu_filter_graph_add_task = gtk_menu_item_new_with_label("Add Task to Graph"); gtk_widget_show(menu_filter_graph_add_task); gtk_menu_shell_append(GTK_MENU_SHELL (menu), menu_filter_graph_add_task); g_signal_connect_swapped (G_OBJECT (menu_filter_graph_add_task), "activate", G_CALLBACK (filter_graph_add_task_clicked), data); menu_filter_hide_task = gtk_menu_item_new_with_label("Hide Task"); gtk_widget_show(menu_filter_hide_task); gtk_menu_shell_append(GTK_MENU_SHELL (menu), menu_filter_hide_task); g_signal_connect_swapped (G_OBJECT (menu_filter_hide_task), "activate", G_CALLBACK (filter_hide_task_clicked), data); menu_filter_graph_hide_task = gtk_menu_item_new_with_label("Hide Task from Graph"); gtk_widget_show(menu_filter_graph_hide_task); gtk_menu_shell_append(GTK_MENU_SHELL (menu), menu_filter_graph_hide_task); g_signal_connect_swapped (G_OBJECT (menu_filter_graph_hide_task), "activate", G_CALLBACK (filter_graph_hide_task_clicked), data); menu_filter_clear_tasks = gtk_menu_item_new_with_label("Clear Task Filter"); gtk_widget_show(menu_filter_clear_tasks); gtk_menu_shell_append(GTK_MENU_SHELL (menu), menu_filter_clear_tasks); g_signal_connect_swapped (G_OBJECT (menu_filter_clear_tasks), "activate", G_CALLBACK (filter_clear_tasks_clicked), data); menu_filter_graph_clear_tasks = gtk_menu_item_new_with_label("Clear Graph Task Filter"); gtk_widget_show(menu_filter_graph_clear_tasks); gtk_menu_shell_append(GTK_MENU_SHELL (menu), menu_filter_graph_clear_tasks); g_signal_connect_swapped (G_OBJECT (menu_filter_graph_clear_tasks), "activate", G_CALLBACK (filter_graph_clear_tasks_clicked), data); } row = trace_view_get_selected_row(GTK_WIDGET(info->treeview)); if (row >= 0) { model = gtk_tree_view_get_model(GTK_TREE_VIEW(info->treeview)); vrec = trace_view_store_get_row(TRACE_VIEW_STORE(model), row); offset = vrec->offset; record = tracecmd_read_at(info->handle, offset, &cpu); if (record) { pid = pevent_data_pid(ginfo->pevent, record); comm = pevent_data_comm_from_pid(ginfo->pevent, pid); len = strlen(comm) + 50; if (info->sync_task_filters) { if (trace_graph_filter_task_find_pid(ginfo, pid)) set_menu_label(menu_filter_add_task, comm, pid, "Remove %s-%d from filters"); else set_menu_label(menu_filter_add_task, comm, pid, "Add %s-%d to filters"); if (trace_graph_hide_task_find_pid(ginfo, pid)) set_menu_label(menu_filter_hide_task, comm, pid, "Show %s-%d"); else set_menu_label(menu_filter_hide_task, comm, pid, "Hide %s-%d"); gtk_widget_hide(menu_filter_graph_add_task); gtk_widget_hide(menu_filter_graph_hide_task); } else { if (filter_task_find_pid(info->list_task_filter, pid)) set_menu_label(menu_filter_add_task, comm, pid, "Remove %s-%d from List filter"); else set_menu_label(menu_filter_add_task, comm, pid, "Add %s-%d to List filter"); if (filter_task_find_pid(info->list_hide_tasks, pid)) set_menu_label(menu_filter_hide_task, comm, pid, "Show %s-%d in List"); else set_menu_label(menu_filter_hide_task, comm, pid, "Hide %s-%d from List"); if (trace_graph_filter_task_find_pid(ginfo, pid)) set_menu_label(menu_filter_graph_add_task, comm, pid, "Remove %s-%d from Graph filter"); else set_menu_label(menu_filter_graph_add_task, comm, pid, "Add %s-%d to Graph filter"); if (trace_graph_hide_task_find_pid(ginfo, pid)) set_menu_label(menu_filter_graph_hide_task, comm, pid, "Show %s-%d in Graph"); else set_menu_label(menu_filter_graph_hide_task, comm, pid, "Hide %s-%d from Graph"); gtk_widget_show(menu_filter_graph_add_task); gtk_widget_show(menu_filter_graph_hide_task); } ginfo->filter_task_selected = pid; info->selected_task = pid; gtk_widget_show(menu_filter_add_task); gtk_widget_show(menu_filter_hide_task); free_record(record); } } else { gtk_widget_hide(menu_filter_add_task); gtk_widget_hide(menu_filter_hide_task); gtk_widget_hide(menu_filter_graph_add_task); gtk_widget_hide(menu_filter_graph_hide_task); } if (ginfo->filter_enabled) gtk_menu_item_set_label(GTK_MENU_ITEM(menu_filter_graph_enable), "Disable Graph Task Filter"); else gtk_menu_item_set_label(GTK_MENU_ITEM(menu_filter_graph_enable), "Enable Graph Task Filter"); if (info->list_filter_enabled) gtk_menu_item_set_label(GTK_MENU_ITEM(menu_filter_list_enable), "Disable List Task Filter"); else gtk_menu_item_set_label(GTK_MENU_ITEM(menu_filter_list_enable), "Enable List Task Filter"); if (ginfo->filter_available) gtk_widget_set_sensitive(menu_filter_graph_enable, TRUE); else gtk_widget_set_sensitive(menu_filter_graph_enable, FALSE); if ((info->sync_task_filters && ginfo->filter_available) || (!info->sync_task_filters && info->list_filter_available)) gtk_widget_set_sensitive(menu_filter_list_enable, TRUE); else gtk_widget_set_sensitive(menu_filter_list_enable, FALSE); if (info->sync_task_filters) { if (filter_task_count(ginfo->task_filter) || filter_task_count(ginfo->hide_tasks)) gtk_widget_set_sensitive(menu_filter_clear_tasks, TRUE); else gtk_widget_set_sensitive(menu_filter_clear_tasks, FALSE); gtk_menu_item_set_label(GTK_MENU_ITEM(menu_filter_clear_tasks), "Clear Task Filter"); gtk_widget_hide(menu_filter_graph_clear_tasks); } else { if (filter_task_count(ginfo->task_filter) || filter_task_count(ginfo->hide_tasks)) gtk_widget_set_sensitive(menu_filter_graph_clear_tasks, TRUE); else gtk_widget_set_sensitive(menu_filter_graph_clear_tasks, FALSE); if (filter_task_count(info->list_task_filter) || filter_task_count(info->list_hide_tasks)) gtk_widget_set_sensitive(menu_filter_clear_tasks, TRUE); else gtk_widget_set_sensitive(menu_filter_clear_tasks, FALSE); gtk_menu_item_set_label(GTK_MENU_ITEM(menu_filter_clear_tasks), "Clear List Task Filter"); gtk_widget_show(menu_filter_graph_clear_tasks); } gtk_menu_popup(GTK_MENU(menu), NULL, NULL, NULL, NULL, 3, gtk_get_current_event_time()); return TRUE; } static gboolean button_press_event(GtkWidget *widget, GdkEventButton *event, gpointer data) { if (event->button == 3) return do_tree_popup(widget, event, data); return FALSE; } static void sig_end(int sig) { fprintf(stderr, "kernelshark: Received SIGINT\n"); exit(0); } void kernel_shark(int argc, char **argv) { struct tracecmd_input *handle; struct shark_info *info; struct stat st; GtkWidget *window; GtkWidget *vbox; GtkWidget *vbox2; GtkWidget *vpaned; GtkWidget *hbox; GtkWidget *menu_bar; GtkWidget *menu; GtkWidget *menu_item; GtkWidget *sub_item; GtkWidget *scrollwin; GtkWidget *widget; GtkWidget *label; GtkWidget *spin; GtkWidget *check; GtkWidget *statusbar; int ret; int c; g_thread_init(NULL); gdk_threads_init(); gtk_init(&argc, &argv); while ((c = getopt(argc, argv, "hvi:")) != -1) { switch(c) { case 'h': usage(basename(argv[0])); return; case 'v': printf("%s - %s\n", basename(argv[0]), VERSION_STRING); return; case 'i': input_file = optarg; break; default: /* assume the other options are for gtk */ break; } } if ((argc - optind) >= 1) { if (input_file) usage(basename(argv[0])); input_file = argv[optind]; } /* The python plugin overrides ^C */ signal(SIGINT, sig_end); info = g_new0(typeof(*info), 1); if (!info) die("Unable to allocate info"); if (!input_file) { ret = stat(default_input_file, &st); if (ret >= 0) input_file = default_input_file; } if (input_file) handle = tracecmd_open(input_file); else handle = NULL; info->handle = handle; info->sync_task_filters = TRUE; info->sync_event_filters = TRUE; /* --- Main window --- */ window = gtk_window_new(GTK_WINDOW_TOPLEVEL); info->window = window; trace_dialog_register_window(window); if (input_file) update_title(window, input_file); /* --- Top Level Vbox --- */ vbox = gtk_vbox_new(FALSE, 0); gtk_container_add(GTK_CONTAINER (window), vbox); gtk_widget_show(vbox); /* --- Menu Bar --- */ menu_bar = gtk_menu_bar_new(); gtk_box_pack_start(GTK_BOX (vbox), menu_bar, FALSE, FALSE, 0); gtk_widget_show(menu_bar); /* --- File Option --- */ menu_item = gtk_menu_item_new_with_label("File"); gtk_widget_show(menu_item); gtk_menu_bar_append(GTK_MENU_BAR (menu_bar), menu_item); menu = gtk_menu_new(); /* Don't need to show menus */ /* --- File - Load Option --- */ sub_item = gtk_menu_item_new_with_label("Load data"); /* Add them to the menu */ gtk_menu_shell_append(GTK_MENU_SHELL (menu), sub_item); g_signal_connect_swapped (G_OBJECT (sub_item), "activate", G_CALLBACK (load_clicked), (gpointer) info); /* We do need to show menu items */ gtk_widget_show(sub_item); /* --- File - Load Filter --- */ sub_item = gtk_menu_item_new_with_label("Load filter"); /* Add them to the menu */ gtk_menu_shell_append(GTK_MENU_SHELL (menu), sub_item); info->load_filter_menu = sub_item; /* We do need to show menu items */ gtk_widget_show(sub_item); update_load_filter(info); /* --- File - Save Filter Option --- */ sub_item = gtk_menu_item_new_with_label("Save filter"); /* Add them to the menu */ gtk_menu_shell_append(GTK_MENU_SHELL (menu), sub_item); /* We do need to show menu items */ gtk_widget_show(sub_item); g_signal_connect_swapped (G_OBJECT (sub_item), "activate", G_CALLBACK (save_filter_clicked), (gpointer) info); /* --- File - Export Filter Option --- */ sub_item = gtk_menu_item_new_with_label("Export filters"); /* Add them to the menu */ gtk_menu_shell_append(GTK_MENU_SHELL (menu), sub_item); g_signal_connect_swapped (G_OBJECT (sub_item), "activate", G_CALLBACK (export_filters_clicked), (gpointer) info); /* We do need to show menu items */ gtk_widget_show(sub_item); /* --- File - Quit Option --- */ sub_item = gtk_menu_item_new_with_label("Quit"); /* Add them to the menu */ gtk_menu_shell_append(GTK_MENU_SHELL (menu), sub_item); /* We can attach the Quit menu item to our exit function */ g_signal_connect_swapped (G_OBJECT (sub_item), "activate", G_CALLBACK (exit_clicked), (gpointer) info); /* We do need to show menu items */ gtk_widget_show(sub_item); gtk_menu_item_set_submenu(GTK_MENU_ITEM (menu_item), menu); /* --- end File options --- */ /* --- Filter Option --- */ menu_item = gtk_menu_item_new_with_label("Filter"); gtk_widget_show(menu_item); gtk_menu_bar_append(GTK_MENU_BAR (menu_bar), menu_item); menu = gtk_menu_new(); /* Don't need to show menus */ /* --- Filter - Sync task Option --- */ sub_item = gtk_menu_item_new_with_label("Unsync Graph and List Task Filters"); info->task_sync_menu = sub_item; /* Add them to the menu */ gtk_menu_shell_append(GTK_MENU_SHELL (menu), sub_item); /* We can attach the Quit menu item to our exit function */ g_signal_connect (G_OBJECT (sub_item), "activate", G_CALLBACK (sync_task_filter_clicked), (gpointer) info); /* We do need to show menu items */ gtk_widget_show(sub_item); /* --- Filter - Sync events Option --- */ sub_item = gtk_menu_item_new_with_label("Unsync Graph and List Event Filters"); info->events_sync_menu = sub_item; /* Add them to the menu */ gtk_menu_shell_append(GTK_MENU_SHELL (menu), sub_item); /* We can attach the Quit menu item to our exit function */ g_signal_connect (G_OBJECT (sub_item), "activate", G_CALLBACK (sync_events_filter_clicked), (gpointer) info); /* We do need to show menu items */ gtk_widget_show(sub_item); /* --- Filter - Graph Tasks Option --- */ sub_item = gtk_menu_item_new_with_label("tasks"); /* Add them to the menu */ gtk_menu_shell_append(GTK_MENU_SHELL (menu), sub_item); /* We can attach the Quit menu item to our exit function */ g_signal_connect_swapped (G_OBJECT (sub_item), "activate", G_CALLBACK (graph_tasks_clicked), (gpointer) info); info->graph_task_menu = sub_item; /* We do need to show menu items */ gtk_widget_show(sub_item); /* --- Filter - Graph Hide Tasks Option --- */ sub_item = gtk_menu_item_new_with_label("hide tasks"); /* Add them to the menu */ gtk_menu_shell_append(GTK_MENU_SHELL (menu), sub_item); /* We can attach the Quit menu item to our exit function */ g_signal_connect_swapped (G_OBJECT (sub_item), "activate", G_CALLBACK (graph_hide_tasks_clicked), (gpointer) info); info->graph_hide_task_menu = sub_item; /* We do need to show menu items */ gtk_widget_show(sub_item); /* --- Filter - Events Option --- */ /* The list and graph events start off insync */ sub_item = gtk_menu_item_new_with_label("events"); /* Add them to the menu */ gtk_menu_shell_append(GTK_MENU_SHELL (menu), sub_item); /* We can attach the Quit menu item to our exit function */ g_signal_connect_swapped (G_OBJECT (sub_item), "activate", G_CALLBACK (graph_events_clicked), (gpointer) info); info->graph_events_menu = sub_item; /* We do need to show menu items */ gtk_widget_show(sub_item); /* --- Filter - Graph Advanced Events Option --- */ /* The list and graph events start off in sync */ sub_item = gtk_menu_item_new_with_label("advanced events"); /* Add them to the menu */ gtk_menu_shell_append(GTK_MENU_SHELL (menu), sub_item); /* We can attach the Quit menu item to our exit function */ g_signal_connect_swapped (G_OBJECT (sub_item), "activate", G_CALLBACK (adv_graph_filter_clicked), (gpointer) info); info->graph_adv_events_menu = sub_item; /* We do need to show menu items */ gtk_widget_show(sub_item); /* --- Filter - List Tasks Option --- */ sub_item = gtk_menu_item_new_with_label("list tasks"); /* Add them to the menu */ gtk_menu_shell_append(GTK_MENU_SHELL (menu), sub_item); /* We can attach the Quit menu item to our exit function */ g_signal_connect_swapped (G_OBJECT (sub_item), "activate", G_CALLBACK (list_tasks_clicked), (gpointer) info); info->list_task_menu = sub_item; /* Only show this item when list and graph tasks are not synced */ /* --- Filter - List Hide Tasks Option --- */ sub_item = gtk_menu_item_new_with_label("list hide tasks"); /* Add them to the menu */ gtk_menu_shell_append(GTK_MENU_SHELL (menu), sub_item); /* We can attach the Quit menu item to our exit function */ g_signal_connect_swapped (G_OBJECT (sub_item), "activate", G_CALLBACK (list_hide_tasks_clicked), (gpointer) info); info->list_hide_task_menu = sub_item; /* Only show this item when list and graph tasks are not synced */ /* --- Filter - List Events Option --- */ sub_item = gtk_menu_item_new_with_label("list events"); /* Add them to the menu */ gtk_menu_shell_append(GTK_MENU_SHELL (menu), sub_item); /* We can attach the Quit menu item to our exit function */ g_signal_connect_swapped (G_OBJECT (sub_item), "activate", G_CALLBACK (list_events_clicked), (gpointer) info); info->list_events_menu = sub_item; /* We do not show this menu (yet) */ /* --- Filter - List Advanced Events Option --- */ sub_item = gtk_menu_item_new_with_label("list advanced event"); /* Add them to the menu */ gtk_menu_shell_append(GTK_MENU_SHELL (menu), sub_item); /* We can attach the Quit menu item to our exit function */ g_signal_connect_swapped (G_OBJECT (sub_item), "activate", G_CALLBACK (adv_list_filter_clicked), (gpointer) info); info->list_adv_events_menu = sub_item; /* We do not show this menu (yet) */ /* --- Filter - CPUs Option --- */ sub_item = gtk_menu_item_new_with_label("list CPUs"); /* Add them to the menu */ gtk_menu_shell_append(GTK_MENU_SHELL (menu), sub_item); /* We can attach the Quit menu item to our exit function */ g_signal_connect_swapped (G_OBJECT (sub_item), "activate", G_CALLBACK (cpus_clicked), (gpointer) info); /* We do need to show menu items */ gtk_widget_show(sub_item); /* --- End Filter Options --- */ gtk_menu_item_set_submenu(GTK_MENU_ITEM (menu_item), menu); /* --- Plot Option --- */ menu_item = gtk_menu_item_new_with_label("Plots"); gtk_widget_show(menu_item); gtk_menu_bar_append(GTK_MENU_BAR (menu_bar), menu_item); menu = gtk_menu_new(); /* Don't need to show menus */ /* --- Plot - CPUs Option --- */ sub_item = gtk_menu_item_new_with_label("CPUs"); /* Add them to the menu */ gtk_menu_shell_append(GTK_MENU_SHELL (menu), sub_item); /* We can attach the Quit menu item to our exit function */ g_signal_connect_swapped (G_OBJECT (sub_item), "activate", G_CALLBACK (plot_cpu_clicked), (gpointer) info); /* We do need to show menu items */ gtk_widget_show(sub_item); /* --- Plot - Tasks Option --- */ sub_item = gtk_menu_item_new_with_label("Tasks"); /* Add them to the menu */ gtk_menu_shell_append(GTK_MENU_SHELL (menu), sub_item); /* We can attach the Quit menu item to our exit function */ g_signal_connect_swapped (G_OBJECT (sub_item), "activate", G_CALLBACK (plot_tasks_clicked), (gpointer) info); /* We do need to show menu items */ gtk_widget_show(sub_item); /* --- End Plot Options --- */ gtk_menu_item_set_submenu(GTK_MENU_ITEM (menu_item), menu); /* --- Capture Option --- */ menu_item = gtk_menu_item_new_with_label("Capture"); gtk_widget_show(menu_item); gtk_menu_bar_append(GTK_MENU_BAR (menu_bar), menu_item); menu = gtk_menu_new(); /* Don't need to show menus */ /* --- Capture - Record Option --- */ sub_item = gtk_menu_item_new_with_label("Record"); /* Add them to the menu */ gtk_menu_shell_append(GTK_MENU_SHELL (menu), sub_item); /* We can attach the Quit menu item to our exit function */ g_signal_connect_swapped (G_OBJECT (sub_item), "activate", G_CALLBACK (tracecmd_capture_clicked), (gpointer) info); /* We do need to show menu items */ gtk_widget_show(sub_item); /* --- End Capture Options --- */ gtk_menu_item_set_submenu(GTK_MENU_ITEM (menu_item), menu); /* --- Help Option --- */ menu_item = gtk_menu_item_new_with_label("Help"); gtk_widget_show(menu_item); gtk_menu_bar_append(GTK_MENU_BAR (menu_bar), menu_item); menu = gtk_menu_new(); /* Don't need to show menus */ /* --- Help - Contents Option --- */ sub_item = gtk_menu_item_new_with_label("Contents"); /* Add them to the menu */ gtk_menu_shell_append(GTK_MENU_SHELL (menu), sub_item); /* We can attach the Quit menu item to our exit function */ g_signal_connect_swapped (G_OBJECT (sub_item), "activate", G_CALLBACK (help_content_clicked), (gpointer) info); /* We do need to show menu items */ gtk_widget_show(sub_item); /* --- Help - About Option --- */ sub_item = gtk_menu_item_new_with_label("About"); /* Add them to the menu */ gtk_menu_shell_append(GTK_MENU_SHELL (menu), sub_item); /* We can attach the Quit menu item to our exit function */ g_signal_connect_swapped (G_OBJECT (sub_item), "activate", G_CALLBACK (help_about_clicked), (gpointer) info); /* We do need to show menu items */ gtk_widget_show(sub_item); /* --- End Help Options --- */ gtk_menu_item_set_submenu(GTK_MENU_ITEM (menu_item), menu); /* --- Top Level Vpaned --- */ vpaned = gtk_vpaned_new(); gtk_box_pack_start(GTK_BOX(vbox), vpaned, TRUE, TRUE, 0); gtk_widget_show(vpaned); gtk_paned_set_position(GTK_PANED(vpaned), TRACE_HEIGHT / 2); /* --- Set up Graph --- */ info->graph_cbs.select = ks_graph_select; info->graph_cbs.filter = ks_graph_filter; info->ginfo = trace_graph_create_with_callbacks(handle, &info->graph_cbs); widget = trace_graph_get_window(info->ginfo); gtk_paned_add1(GTK_PANED(vpaned), widget); gtk_widget_show(widget); /* --- Tree View Vbox --- */ vbox2 = gtk_vbox_new(FALSE, 0); gtk_paned_add2(GTK_PANED(vpaned), vbox2); gtk_widget_show(vbox2); /* --- Paging Hbox --- */ hbox = gtk_hbox_new(FALSE, 0); gtk_box_pack_start(GTK_BOX(vbox2), hbox, FALSE, FALSE, 0); gtk_widget_show(hbox); /* --- Page Spin Button --- */ label = gtk_label_new("Page"); gtk_box_pack_start(GTK_BOX(hbox), label, FALSE, FALSE, 0); gtk_widget_show(label); spin = gtk_spin_button_new(NULL, 1.0, 0); gtk_spin_button_set_range(GTK_SPIN_BUTTON(spin), 1, 1); gtk_box_pack_start(GTK_BOX(hbox), spin, FALSE, FALSE, 0); gtk_widget_show(spin); info->spin = spin; /* --- Search --- */ /* The tree needs its columns loaded now */ info->treeview = gtk_tree_view_new(); trace_view_load(info->treeview, handle, spin); label = gtk_label_new(" Search: "); gtk_box_pack_start(GTK_BOX(hbox), label, FALSE, FALSE, 0); gtk_widget_show(label); trace_view_search_setup(GTK_BOX(hbox), GTK_TREE_VIEW(info->treeview)); check = gtk_check_button_new_with_label("graph follows"); gtk_box_pack_start(GTK_BOX(hbox), check, TRUE, TRUE, 0); gtk_widget_show(check); g_signal_connect_swapped (check, "toggled", G_CALLBACK (graph_check_toggle), (gpointer) info); /* --- Top Level Trace View Paging Hbox --- */ hbox = gtk_hbox_new(FALSE, 0); gtk_box_pack_start(GTK_BOX(vbox2), hbox, TRUE, TRUE, 0); gtk_widget_show(hbox); /* --- Scroll Window --- */ scrollwin = gtk_scrolled_window_new(NULL, NULL); gtk_scrolled_window_set_policy(GTK_SCROLLED_WINDOW(scrollwin), GTK_POLICY_AUTOMATIC, GTK_POLICY_AUTOMATIC); gtk_box_pack_start(GTK_BOX (hbox), scrollwin, TRUE, TRUE, 0); gtk_widget_show(scrollwin); /* --- Set up Trace Tree --- */ g_signal_connect(info->treeview, "row-activated", (GCallback)row_double_clicked, info); g_signal_connect(info->treeview, "cursor-changed", (GCallback)cursor_changed, info); gtk_container_add(GTK_CONTAINER(scrollwin), info->treeview); gtk_signal_connect(GTK_OBJECT(info->treeview), "button_press_event", (GtkSignalFunc) button_press_event, info); gtk_widget_show(info->treeview); /* --- Set up Status Bar --- */ statusbar = trace_status_bar_new(); gtk_box_pack_start(GTK_BOX(vbox), statusbar, FALSE, FALSE, 0); gtk_widget_show(statusbar); /********************************************** * Main Window **********************************************/ /* Connect to the delete_event signal and Run the application */ gtk_signal_connect (GTK_OBJECT (window), "delete_event", (GtkSignalFunc) delete_event, (gpointer) info); gtk_widget_set_size_request(window, TRACE_WIDTH, TRACE_HEIGHT); gdk_threads_enter(); gtk_widget_show (window); gtk_main (); gdk_threads_leave(); } int main(int argc, char **argv) { kernel_shark(argc, argv); return 0; } trace-cmd-2.5.3/kernel-shark.h000066400000000000000000000044601246701203100161170ustar00rootroot00000000000000/* * Copyright (C) 2009, 2010 Red Hat Inc, Steven Rostedt * * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; version 2 of the License (not later!) * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; if not, see * * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ */ #ifndef _KERNEL_SHARK_H #define _KERNEL_SHARK_H #include "trace-graph.h" #include "trace-view.h" struct shark_info { GtkWidget *window; struct graph_info *ginfo; struct tracecmd_input *handle; GtkWidget *treeview; GtkWidget *spin; GtkWidget *load_filter_menu; GtkWidget *task_sync_menu; GtkWidget *events_sync_menu; GtkWidget *list_task_menu; GtkWidget *graph_task_menu; GtkWidget *list_hide_task_menu; GtkWidget *graph_hide_task_menu; GtkWidget *list_events_menu; GtkWidget *graph_events_menu; GtkWidget *list_adv_events_menu; GtkWidget *graph_adv_events_menu; gchar *current_filter; struct graph_callbacks graph_cbs; gint selected_task; gboolean list_filter_enabled; gboolean list_filter_available; gboolean graph_follows; gboolean sync_task_filters; gboolean sync_event_filters; struct filter_task *list_task_filter; struct filter_task *list_hide_tasks; /* Save capture state. */ gboolean cap_all_events; gchar **cap_systems; int *cap_events; gchar *cap_plugin; gchar *cap_command; gchar *cap_file; gchar *cap_settings_name; int cap_max_buf_size; gchar *cap_buffer_output; }; #define offset_of(type, field) (long)(&((type *)0)->field) #define container_of(p, type, field) (type *)((long)p - offset_of(type, field)) int kernelshark_load_file(struct shark_info *info, const char *file); void kernel_shark_clear_capture(struct shark_info *info); #endif /* _KERNEL_SHARK_H */ trace-cmd-2.5.3/list.h000066400000000000000000000044611246701203100145050ustar00rootroot00000000000000/* * Copyright (C) 2009 Red Hat Inc, Steven Rostedt * * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ * This program is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; * version 2.1 of the License (not later!) * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this program; if not, see * * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ */ #ifndef __LIST_H #define __LIST_H #define offset_of(type, field) (long)(&((type *)0)->field) #define container_of(p, type, field) (type *)((long)p - offset_of(type, field)) struct list_head { struct list_head *next; struct list_head *prev; }; static inline void list_head_init(struct list_head *list) { list->next = list; list->prev = list; } static inline void list_add(struct list_head *p, struct list_head *head) { struct list_head *next = head->next; p->prev = head; p->next = next; next->prev = p; head->next = p; } static inline void list_add_tail(struct list_head *p, struct list_head *head) { struct list_head *prev = head->prev; p->prev = prev; p->next = head; prev->next = p; head->prev = p; } static inline void list_del(struct list_head *p) { struct list_head *next = p->next; struct list_head *prev = p->prev; next->prev = prev; prev->next = next; } static inline int list_empty(struct list_head *list) { return list->next == list; } #define list_for_each_entry(p, list, field) \ for (p = container_of((list)->next, typeof(*p), field); \ &(p)->field != list; \ p = container_of((p)->field.next, typeof(*p), field)) #define list_for_each_entry_safe(p, n, list, field) \ for (p = container_of((list)->next, typeof(*p), field), \ n = container_of((p)->field.next, typeof(*p), field); \ &(p)->field != list; \ p = n, n = container_of((p)->field.next, typeof(*p), field)) #endif /* __LIST_H */ trace-cmd-2.5.3/parse-filter.c000066400000000000000000001471171246701203100161300ustar00rootroot00000000000000/* * Copyright (C) 2010 Red Hat Inc, Steven Rostedt * * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ * This program is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; * version 2.1 of the License (not later!) * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this program; if not, see * * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ */ #include #include #include #include #include #include #include "event-parse.h" #include "event-utils.h" #define COMM "COMM" static struct format_field comm = { .name = "COMM", }; struct event_list { struct event_list *next; struct event_format *event; }; static void show_error(char *error_buf, const char *fmt, ...) { unsigned long long index; const char *input; va_list ap; int len; int i; input = pevent_get_input_buf(); index = pevent_get_input_buf_ptr(); len = input ? strlen(input) : 0; if (len) { strcpy(error_buf, input); error_buf[len] = '\n'; for (i = 1; i < len && i < index; i++) error_buf[len+i] = ' '; error_buf[len + i] = '^'; error_buf[len + i + 1] = '\n'; len += i+2; } va_start(ap, fmt); vsnprintf(error_buf + len, PEVENT_FILTER_ERROR_BUFSZ - len, fmt, ap); va_end(ap); } static void free_token(char *token) { pevent_free_token(token); } static enum event_type read_token(char **tok) { enum event_type type; char *token = NULL; do { free_token(token); type = pevent_read_token(&token); } while (type == EVENT_NEWLINE || type == EVENT_SPACE); /* If token is = or ! check to see if the next char is ~ */ if (token && (strcmp(token, "=") == 0 || strcmp(token, "!") == 0) && pevent_peek_char() == '~') { /* append it */ *tok = malloc(3); if (*tok == NULL) { free_token(token); return EVENT_ERROR; } sprintf(*tok, "%c%c", *token, '~'); free_token(token); /* Now remove the '~' from the buffer */ pevent_read_token(&token); free_token(token); } else *tok = token; return type; } static int filter_cmp(const void *a, const void *b) { const struct filter_type *ea = a; const struct filter_type *eb = b; if (ea->event_id < eb->event_id) return -1; if (ea->event_id > eb->event_id) return 1; return 0; } static struct filter_type * find_filter_type(struct event_filter *filter, int id) { struct filter_type *filter_type; struct filter_type key; key.event_id = id; filter_type = bsearch(&key, filter->event_filters, filter->filters, sizeof(*filter->event_filters), filter_cmp); return filter_type; } static struct filter_type * add_filter_type(struct event_filter *filter, int id) { struct filter_type *filter_type; int i; filter_type = find_filter_type(filter, id); if (filter_type) return filter_type; filter_type = realloc(filter->event_filters, sizeof(*filter->event_filters) * (filter->filters + 1)); if (!filter_type) return NULL; filter->event_filters = filter_type; for (i = 0; i < filter->filters; i++) { if (filter->event_filters[i].event_id > id) break; } if (i < filter->filters) memmove(&filter->event_filters[i+1], &filter->event_filters[i], sizeof(*filter->event_filters) * (filter->filters - i)); filter_type = &filter->event_filters[i]; filter_type->event_id = id; filter_type->event = pevent_find_event(filter->pevent, id); filter_type->filter = NULL; filter->filters++; return filter_type; } /** * pevent_filter_alloc - create a new event filter * @pevent: The pevent that this filter is associated with */ struct event_filter *pevent_filter_alloc(struct pevent *pevent) { struct event_filter *filter; filter = malloc(sizeof(*filter)); if (filter == NULL) return NULL; memset(filter, 0, sizeof(*filter)); filter->pevent = pevent; pevent_ref(pevent); return filter; } static struct filter_arg *allocate_arg(void) { return calloc(1, sizeof(struct filter_arg)); } static void free_arg(struct filter_arg *arg) { if (!arg) return; switch (arg->type) { case FILTER_ARG_NONE: case FILTER_ARG_BOOLEAN: break; case FILTER_ARG_NUM: free_arg(arg->num.left); free_arg(arg->num.right); break; case FILTER_ARG_EXP: free_arg(arg->exp.left); free_arg(arg->exp.right); break; case FILTER_ARG_STR: free(arg->str.val); regfree(&arg->str.reg); free(arg->str.buffer); break; case FILTER_ARG_VALUE: if (arg->value.type == FILTER_STRING || arg->value.type == FILTER_CHAR) free(arg->value.str); break; case FILTER_ARG_OP: free_arg(arg->op.left); free_arg(arg->op.right); default: break; } free(arg); } static int add_event(struct event_list **events, struct event_format *event) { struct event_list *list; list = malloc(sizeof(*list)); if (list == NULL) return -1; list->next = *events; *events = list; list->event = event; return 0; } static int event_match(struct event_format *event, regex_t *sreg, regex_t *ereg) { if (sreg) { return !regexec(sreg, event->system, 0, NULL, 0) && !regexec(ereg, event->name, 0, NULL, 0); } return !regexec(ereg, event->system, 0, NULL, 0) || !regexec(ereg, event->name, 0, NULL, 0); } static enum pevent_errno find_event(struct pevent *pevent, struct event_list **events, char *sys_name, char *event_name) { struct event_format *event; regex_t ereg; regex_t sreg; int match = 0; int fail = 0; char *reg; int ret; int i; if (!event_name) { /* if no name is given, then swap sys and name */ event_name = sys_name; sys_name = NULL; } reg = malloc(strlen(event_name) + 3); if (reg == NULL) return PEVENT_ERRNO__MEM_ALLOC_FAILED; sprintf(reg, "^%s$", event_name); ret = regcomp(&ereg, reg, REG_ICASE|REG_NOSUB); free(reg); if (ret) return PEVENT_ERRNO__INVALID_EVENT_NAME; if (sys_name) { reg = malloc(strlen(sys_name) + 3); if (reg == NULL) { regfree(&ereg); return PEVENT_ERRNO__MEM_ALLOC_FAILED; } sprintf(reg, "^%s$", sys_name); ret = regcomp(&sreg, reg, REG_ICASE|REG_NOSUB); free(reg); if (ret) { regfree(&ereg); return PEVENT_ERRNO__INVALID_EVENT_NAME; } } for (i = 0; i < pevent->nr_events; i++) { event = pevent->events[i]; if (event_match(event, sys_name ? &sreg : NULL, &ereg)) { match = 1; if (add_event(events, event) < 0) { fail = 1; break; } } } regfree(&ereg); if (sys_name) regfree(&sreg); if (!match) return PEVENT_ERRNO__EVENT_NOT_FOUND; if (fail) return PEVENT_ERRNO__MEM_ALLOC_FAILED; return 0; } static void free_events(struct event_list *events) { struct event_list *event; while (events) { event = events; events = events->next; free(event); } } static enum pevent_errno create_arg_item(struct event_format *event, const char *token, enum event_type type, struct filter_arg **parg, char *error_str) { struct format_field *field; struct filter_arg *arg; arg = allocate_arg(); if (arg == NULL) { show_error(error_str, "failed to allocate filter arg"); return PEVENT_ERRNO__MEM_ALLOC_FAILED; } switch (type) { case EVENT_SQUOTE: case EVENT_DQUOTE: arg->type = FILTER_ARG_VALUE; arg->value.type = type == EVENT_DQUOTE ? FILTER_STRING : FILTER_CHAR; arg->value.str = strdup(token); if (!arg->value.str) { free_arg(arg); show_error(error_str, "failed to allocate string filter arg"); return PEVENT_ERRNO__MEM_ALLOC_FAILED; } break; case EVENT_ITEM: /* if it is a number, then convert it */ if (isdigit(token[0])) { arg->type = FILTER_ARG_VALUE; arg->value.type = FILTER_NUMBER; arg->value.val = strtoull(token, NULL, 0); break; } /* Consider this a field */ field = pevent_find_any_field(event, token); if (!field) { if (strcmp(token, COMM) != 0) { /* not a field, Make it false */ arg->type = FILTER_ARG_BOOLEAN; arg->boolean.value = FILTER_FALSE; break; } /* If token is 'COMM' then it is special */ field = &comm; } arg->type = FILTER_ARG_FIELD; arg->field.field = field; break; default: free_arg(arg); show_error(error_str, "expected a value but found %s", token); return PEVENT_ERRNO__UNEXPECTED_TYPE; } *parg = arg; return 0; } static struct filter_arg * create_arg_op(enum filter_op_type btype) { struct filter_arg *arg; arg = allocate_arg(); if (!arg) return NULL; arg->type = FILTER_ARG_OP; arg->op.type = btype; return arg; } static struct filter_arg * create_arg_exp(enum filter_exp_type etype) { struct filter_arg *arg; arg = allocate_arg(); if (!arg) return NULL; arg->type = FILTER_ARG_EXP; arg->op.type = etype; return arg; } static struct filter_arg * create_arg_cmp(enum filter_exp_type etype) { struct filter_arg *arg; arg = allocate_arg(); if (!arg) return NULL; /* Use NUM and change if necessary */ arg->type = FILTER_ARG_NUM; arg->op.type = etype; return arg; } static enum pevent_errno add_right(struct filter_arg *op, struct filter_arg *arg, char *error_str) { struct filter_arg *left; char *str; int op_type; int ret; switch (op->type) { case FILTER_ARG_EXP: if (op->exp.right) goto out_fail; op->exp.right = arg; break; case FILTER_ARG_OP: if (op->op.right) goto out_fail; op->op.right = arg; break; case FILTER_ARG_NUM: if (op->op.right) goto out_fail; /* * The arg must be num, str, or field */ switch (arg->type) { case FILTER_ARG_VALUE: case FILTER_ARG_FIELD: break; default: show_error(error_str, "Illegal rvalue"); return PEVENT_ERRNO__ILLEGAL_RVALUE; } /* * Depending on the type, we may need to * convert this to a string or regex. */ switch (arg->value.type) { case FILTER_CHAR: /* * A char should be converted to number if * the string is 1 byte, and the compare * is not a REGEX. */ if (strlen(arg->value.str) == 1 && op->num.type != FILTER_CMP_REGEX && op->num.type != FILTER_CMP_NOT_REGEX) { arg->value.type = FILTER_NUMBER; goto do_int; } /* fall through */ case FILTER_STRING: /* convert op to a string arg */ op_type = op->num.type; left = op->num.left; str = arg->value.str; /* reset the op for the new field */ memset(op, 0, sizeof(*op)); /* * If left arg was a field not found then * NULL the entire op. */ if (left->type == FILTER_ARG_BOOLEAN) { free_arg(left); free_arg(arg); op->type = FILTER_ARG_BOOLEAN; op->boolean.value = FILTER_FALSE; break; } /* Left arg must be a field */ if (left->type != FILTER_ARG_FIELD) { show_error(error_str, "Illegal lvalue for string comparison"); return PEVENT_ERRNO__ILLEGAL_LVALUE; } /* Make sure this is a valid string compare */ switch (op_type) { case FILTER_CMP_EQ: op_type = FILTER_CMP_MATCH; break; case FILTER_CMP_NE: op_type = FILTER_CMP_NOT_MATCH; break; case FILTER_CMP_REGEX: case FILTER_CMP_NOT_REGEX: ret = regcomp(&op->str.reg, str, REG_ICASE|REG_NOSUB); if (ret) { show_error(error_str, "RegEx '%s' did not compute", str); return PEVENT_ERRNO__INVALID_REGEX; } break; default: show_error(error_str, "Illegal comparison for string"); return PEVENT_ERRNO__ILLEGAL_STRING_CMP; } op->type = FILTER_ARG_STR; op->str.type = op_type; op->str.field = left->field.field; op->str.val = strdup(str); if (!op->str.val) { show_error(error_str, "Failed to allocate string filter"); return PEVENT_ERRNO__MEM_ALLOC_FAILED; } /* * Need a buffer to copy data for tests */ op->str.buffer = malloc(op->str.field->size + 1); if (!op->str.buffer) { show_error(error_str, "Failed to allocate string filter"); return PEVENT_ERRNO__MEM_ALLOC_FAILED; } /* Null terminate this buffer */ op->str.buffer[op->str.field->size] = 0; /* We no longer have left or right args */ free_arg(arg); free_arg(left); break; case FILTER_NUMBER: do_int: switch (op->num.type) { case FILTER_CMP_REGEX: case FILTER_CMP_NOT_REGEX: show_error(error_str, "Op not allowed with integers"); return PEVENT_ERRNO__ILLEGAL_INTEGER_CMP; default: break; } /* numeric compare */ op->num.right = arg; break; default: goto out_fail; } break; default: goto out_fail; } return 0; out_fail: show_error(error_str, "Syntax error"); return PEVENT_ERRNO__SYNTAX_ERROR; } static struct filter_arg * rotate_op_right(struct filter_arg *a, struct filter_arg *b) { struct filter_arg *arg; arg = a->op.right; a->op.right = b; return arg; } static enum pevent_errno add_left(struct filter_arg *op, struct filter_arg *arg) { switch (op->type) { case FILTER_ARG_EXP: if (arg->type == FILTER_ARG_OP) arg = rotate_op_right(arg, op); op->exp.left = arg; break; case FILTER_ARG_OP: op->op.left = arg; break; case FILTER_ARG_NUM: if (arg->type == FILTER_ARG_OP) arg = rotate_op_right(arg, op); /* left arg of compares must be a field */ if (arg->type != FILTER_ARG_FIELD && arg->type != FILTER_ARG_BOOLEAN) return PEVENT_ERRNO__INVALID_ARG_TYPE; op->num.left = arg; break; default: return PEVENT_ERRNO__INVALID_ARG_TYPE; } return 0; } enum op_type { OP_NONE, OP_BOOL, OP_NOT, OP_EXP, OP_CMP, }; static enum op_type process_op(const char *token, enum filter_op_type *btype, enum filter_cmp_type *ctype, enum filter_exp_type *etype) { *btype = FILTER_OP_NOT; *etype = FILTER_EXP_NONE; *ctype = FILTER_CMP_NONE; if (strcmp(token, "&&") == 0) *btype = FILTER_OP_AND; else if (strcmp(token, "||") == 0) *btype = FILTER_OP_OR; else if (strcmp(token, "!") == 0) return OP_NOT; if (*btype != FILTER_OP_NOT) return OP_BOOL; /* Check for value expressions */ if (strcmp(token, "+") == 0) { *etype = FILTER_EXP_ADD; } else if (strcmp(token, "-") == 0) { *etype = FILTER_EXP_SUB; } else if (strcmp(token, "*") == 0) { *etype = FILTER_EXP_MUL; } else if (strcmp(token, "/") == 0) { *etype = FILTER_EXP_DIV; } else if (strcmp(token, "%") == 0) { *etype = FILTER_EXP_MOD; } else if (strcmp(token, ">>") == 0) { *etype = FILTER_EXP_RSHIFT; } else if (strcmp(token, "<<") == 0) { *etype = FILTER_EXP_LSHIFT; } else if (strcmp(token, "&") == 0) { *etype = FILTER_EXP_AND; } else if (strcmp(token, "|") == 0) { *etype = FILTER_EXP_OR; } else if (strcmp(token, "^") == 0) { *etype = FILTER_EXP_XOR; } else if (strcmp(token, "~") == 0) *etype = FILTER_EXP_NOT; if (*etype != FILTER_EXP_NONE) return OP_EXP; /* Check for compares */ if (strcmp(token, "==") == 0) *ctype = FILTER_CMP_EQ; else if (strcmp(token, "!=") == 0) *ctype = FILTER_CMP_NE; else if (strcmp(token, "<") == 0) *ctype = FILTER_CMP_LT; else if (strcmp(token, ">") == 0) *ctype = FILTER_CMP_GT; else if (strcmp(token, "<=") == 0) *ctype = FILTER_CMP_LE; else if (strcmp(token, ">=") == 0) *ctype = FILTER_CMP_GE; else if (strcmp(token, "=~") == 0) *ctype = FILTER_CMP_REGEX; else if (strcmp(token, "!~") == 0) *ctype = FILTER_CMP_NOT_REGEX; else return OP_NONE; return OP_CMP; } static int check_op_done(struct filter_arg *arg) { switch (arg->type) { case FILTER_ARG_EXP: return arg->exp.right != NULL; case FILTER_ARG_OP: return arg->op.right != NULL; case FILTER_ARG_NUM: return arg->num.right != NULL; case FILTER_ARG_STR: /* A string conversion is always done */ return 1; case FILTER_ARG_BOOLEAN: /* field not found, is ok */ return 1; default: return 0; } } enum filter_vals { FILTER_VAL_NORM, FILTER_VAL_FALSE, FILTER_VAL_TRUE, }; static enum pevent_errno reparent_op_arg(struct filter_arg *parent, struct filter_arg *old_child, struct filter_arg *arg, char *error_str) { struct filter_arg *other_child; struct filter_arg **ptr; if (parent->type != FILTER_ARG_OP && arg->type != FILTER_ARG_OP) { show_error(error_str, "can not reparent other than OP"); return PEVENT_ERRNO__REPARENT_NOT_OP; } /* Get the sibling */ if (old_child->op.right == arg) { ptr = &old_child->op.right; other_child = old_child->op.left; } else if (old_child->op.left == arg) { ptr = &old_child->op.left; other_child = old_child->op.right; } else { show_error(error_str, "Error in reparent op, find other child"); return PEVENT_ERRNO__REPARENT_FAILED; } /* Detach arg from old_child */ *ptr = NULL; /* Check for root */ if (parent == old_child) { free_arg(other_child); *parent = *arg; /* Free arg without recussion */ free(arg); return 0; } if (parent->op.right == old_child) ptr = &parent->op.right; else if (parent->op.left == old_child) ptr = &parent->op.left; else { show_error(error_str, "Error in reparent op"); return PEVENT_ERRNO__REPARENT_FAILED; } *ptr = arg; free_arg(old_child); return 0; } /* Returns either filter_vals (success) or pevent_errno (failfure) */ static int test_arg(struct filter_arg *parent, struct filter_arg *arg, char *error_str) { int lval, rval; switch (arg->type) { /* bad case */ case FILTER_ARG_BOOLEAN: return FILTER_VAL_FALSE + arg->boolean.value; /* good cases: */ case FILTER_ARG_STR: case FILTER_ARG_VALUE: case FILTER_ARG_FIELD: return FILTER_VAL_NORM; case FILTER_ARG_EXP: lval = test_arg(arg, arg->exp.left, error_str); if (lval != FILTER_VAL_NORM) return lval; rval = test_arg(arg, arg->exp.right, error_str); if (rval != FILTER_VAL_NORM) return rval; return FILTER_VAL_NORM; case FILTER_ARG_NUM: lval = test_arg(arg, arg->num.left, error_str); if (lval != FILTER_VAL_NORM) return lval; rval = test_arg(arg, arg->num.right, error_str); if (rval != FILTER_VAL_NORM) return rval; return FILTER_VAL_NORM; case FILTER_ARG_OP: if (arg->op.type != FILTER_OP_NOT) { lval = test_arg(arg, arg->op.left, error_str); switch (lval) { case FILTER_VAL_NORM: break; case FILTER_VAL_TRUE: if (arg->op.type == FILTER_OP_OR) return FILTER_VAL_TRUE; rval = test_arg(arg, arg->op.right, error_str); if (rval != FILTER_VAL_NORM) return rval; return reparent_op_arg(parent, arg, arg->op.right, error_str); case FILTER_VAL_FALSE: if (arg->op.type == FILTER_OP_AND) return FILTER_VAL_FALSE; rval = test_arg(arg, arg->op.right, error_str); if (rval != FILTER_VAL_NORM) return rval; return reparent_op_arg(parent, arg, arg->op.right, error_str); default: return lval; } } rval = test_arg(arg, arg->op.right, error_str); switch (rval) { case FILTER_VAL_NORM: default: break; case FILTER_VAL_TRUE: if (arg->op.type == FILTER_OP_OR) return FILTER_VAL_TRUE; if (arg->op.type == FILTER_OP_NOT) return FILTER_VAL_FALSE; return reparent_op_arg(parent, arg, arg->op.left, error_str); case FILTER_VAL_FALSE: if (arg->op.type == FILTER_OP_AND) return FILTER_VAL_FALSE; if (arg->op.type == FILTER_OP_NOT) return FILTER_VAL_TRUE; return reparent_op_arg(parent, arg, arg->op.left, error_str); } return rval; default: show_error(error_str, "bad arg in filter tree"); return PEVENT_ERRNO__BAD_FILTER_ARG; } return FILTER_VAL_NORM; } /* Remove any unknown event fields */ static int collapse_tree(struct filter_arg *arg, struct filter_arg **arg_collapsed, char *error_str) { int ret; ret = test_arg(arg, arg, error_str); switch (ret) { case FILTER_VAL_NORM: break; case FILTER_VAL_TRUE: case FILTER_VAL_FALSE: free_arg(arg); arg = allocate_arg(); if (arg) { arg->type = FILTER_ARG_BOOLEAN; arg->boolean.value = ret == FILTER_VAL_TRUE; } else { show_error(error_str, "Failed to allocate filter arg"); ret = PEVENT_ERRNO__MEM_ALLOC_FAILED; } break; default: /* test_arg() already set the error_str */ free_arg(arg); arg = NULL; break; } *arg_collapsed = arg; return ret; } static enum pevent_errno process_filter(struct event_format *event, struct filter_arg **parg, char *error_str, int not) { enum event_type type; char *token = NULL; struct filter_arg *current_op = NULL; struct filter_arg *current_exp = NULL; struct filter_arg *left_item = NULL; struct filter_arg *arg = NULL; enum op_type op_type; enum filter_op_type btype; enum filter_exp_type etype; enum filter_cmp_type ctype; enum pevent_errno ret; *parg = NULL; do { free(token); type = read_token(&token); switch (type) { case EVENT_SQUOTE: case EVENT_DQUOTE: case EVENT_ITEM: ret = create_arg_item(event, token, type, &arg, error_str); if (ret < 0) goto fail; if (!left_item) left_item = arg; else if (current_exp) { ret = add_right(current_exp, arg, error_str); if (ret < 0) goto fail; left_item = NULL; /* Not's only one one expression */ if (not) { arg = NULL; if (current_op) goto fail_syntax; free(token); *parg = current_exp; return 0; } } else goto fail_syntax; arg = NULL; break; case EVENT_DELIM: if (*token == ',') { show_error(error_str, "Illegal token ','"); ret = PEVENT_ERRNO__ILLEGAL_TOKEN; goto fail; } if (*token == '(') { if (left_item) { show_error(error_str, "Open paren can not come after item"); ret = PEVENT_ERRNO__INVALID_PAREN; goto fail; } if (current_exp) { show_error(error_str, "Open paren can not come after expression"); ret = PEVENT_ERRNO__INVALID_PAREN; goto fail; } ret = process_filter(event, &arg, error_str, 0); if (ret != PEVENT_ERRNO__UNBALANCED_PAREN) { if (ret == 0) { show_error(error_str, "Unbalanced number of '('"); ret = PEVENT_ERRNO__UNBALANCED_PAREN; } goto fail; } ret = 0; /* A not wants just one expression */ if (not) { if (current_op) goto fail_syntax; *parg = arg; return 0; } if (current_op) ret = add_right(current_op, arg, error_str); else current_exp = arg; if (ret < 0) goto fail; } else { /* ')' */ if (!current_op && !current_exp) goto fail_syntax; /* Make sure everything is finished at this level */ if (current_exp && !check_op_done(current_exp)) goto fail_syntax; if (current_op && !check_op_done(current_op)) goto fail_syntax; if (current_op) *parg = current_op; else *parg = current_exp; free(token); return PEVENT_ERRNO__UNBALANCED_PAREN; } break; case EVENT_OP: op_type = process_op(token, &btype, &ctype, &etype); /* All expect a left arg except for NOT */ switch (op_type) { case OP_BOOL: /* Logic ops need a left expression */ if (!current_exp && !current_op) goto fail_syntax; /* fall through */ case OP_NOT: /* logic only processes ops and exp */ if (left_item) goto fail_syntax; break; case OP_EXP: case OP_CMP: if (!left_item) goto fail_syntax; break; case OP_NONE: show_error(error_str, "Unknown op token %s", token); ret = PEVENT_ERRNO__UNKNOWN_TOKEN; goto fail; } ret = 0; switch (op_type) { case OP_BOOL: arg = create_arg_op(btype); if (arg == NULL) goto fail_alloc; if (current_op) ret = add_left(arg, current_op); else ret = add_left(arg, current_exp); current_op = arg; current_exp = NULL; break; case OP_NOT: arg = create_arg_op(btype); if (arg == NULL) goto fail_alloc; if (current_op) ret = add_right(current_op, arg, error_str); if (ret < 0) goto fail; current_exp = arg; ret = process_filter(event, &arg, error_str, 1); if (ret < 0) goto fail; ret = add_right(current_exp, arg, error_str); if (ret < 0) goto fail; break; case OP_EXP: case OP_CMP: if (op_type == OP_EXP) arg = create_arg_exp(etype); else arg = create_arg_cmp(ctype); if (arg == NULL) goto fail_alloc; if (current_op) ret = add_right(current_op, arg, error_str); if (ret < 0) goto fail; ret = add_left(arg, left_item); if (ret < 0) { arg = NULL; goto fail_syntax; } current_exp = arg; break; default: break; } arg = NULL; if (ret < 0) goto fail_syntax; break; case EVENT_NONE: break; case EVENT_ERROR: goto fail_alloc; default: goto fail_syntax; } } while (type != EVENT_NONE); if (!current_op && !current_exp) goto fail_syntax; if (!current_op) current_op = current_exp; ret = collapse_tree(current_op, parg, error_str); if (ret < 0) goto fail; *parg = current_op; free(token); return 0; fail_alloc: show_error(error_str, "failed to allocate filter arg"); ret = PEVENT_ERRNO__MEM_ALLOC_FAILED; goto fail; fail_syntax: show_error(error_str, "Syntax error"); ret = PEVENT_ERRNO__SYNTAX_ERROR; fail: free_arg(current_op); free_arg(current_exp); free_arg(arg); free(token); return ret; } static enum pevent_errno process_event(struct event_format *event, const char *filter_str, struct filter_arg **parg, char *error_str) { int ret; pevent_buffer_init(filter_str, strlen(filter_str)); ret = process_filter(event, parg, error_str, 0); if (ret < 0) return ret; /* If parg is NULL, then make it into FALSE */ if (!*parg) { *parg = allocate_arg(); if (*parg == NULL) return PEVENT_ERRNO__MEM_ALLOC_FAILED; (*parg)->type = FILTER_ARG_BOOLEAN; (*parg)->boolean.value = FILTER_FALSE; } return 0; } static enum pevent_errno filter_event(struct event_filter *filter, struct event_format *event, const char *filter_str, char *error_str) { struct filter_type *filter_type; struct filter_arg *arg; enum pevent_errno ret; if (filter_str) { ret = process_event(event, filter_str, &arg, error_str); if (ret < 0) return ret; } else { /* just add a TRUE arg */ arg = allocate_arg(); if (arg == NULL) return PEVENT_ERRNO__MEM_ALLOC_FAILED; arg->type = FILTER_ARG_BOOLEAN; arg->boolean.value = FILTER_TRUE; } filter_type = add_filter_type(filter, event->id); if (filter_type == NULL) return PEVENT_ERRNO__MEM_ALLOC_FAILED; if (filter_type->filter) free_arg(filter_type->filter); filter_type->filter = arg; return 0; } static void filter_init_error_buf(struct event_filter *filter) { /* clear buffer to reset show error */ pevent_buffer_init("", 0); filter->error_buffer[0] = '\0'; } /** * pevent_filter_add_filter_str - add a new filter * @filter: the event filter to add to * @filter_str: the filter string that contains the filter * * Returns 0 if the filter was successfully added or a * negative error code. Use pevent_filter_strerror() to see * actual error message in case of error. */ enum pevent_errno pevent_filter_add_filter_str(struct event_filter *filter, const char *filter_str) { struct pevent *pevent = filter->pevent; struct event_list *event; struct event_list *events = NULL; const char *filter_start; const char *next_event; char *this_event; char *event_name = NULL; char *sys_name = NULL; char *sp; enum pevent_errno rtn = 0; /* PEVENT_ERRNO__SUCCESS */ int len; int ret; filter_init_error_buf(filter); filter_start = strchr(filter_str, ':'); if (filter_start) len = filter_start - filter_str; else len = strlen(filter_str); do { next_event = strchr(filter_str, ','); if (next_event && (!filter_start || next_event < filter_start)) len = next_event - filter_str; else if (filter_start) len = filter_start - filter_str; else len = strlen(filter_str); this_event = malloc(len + 1); if (this_event == NULL) { /* This can only happen when events is NULL, but still */ free_events(events); return PEVENT_ERRNO__MEM_ALLOC_FAILED; } memcpy(this_event, filter_str, len); this_event[len] = 0; if (next_event) next_event++; filter_str = next_event; sys_name = strtok_r(this_event, "/", &sp); event_name = strtok_r(NULL, "/", &sp); if (!sys_name) { /* This can only happen when events is NULL, but still */ free_events(events); free(this_event); return PEVENT_ERRNO__FILTER_NOT_FOUND; } /* Find this event */ ret = find_event(pevent, &events, strim(sys_name), strim(event_name)); if (ret < 0) { free_events(events); free(this_event); return ret; } free(this_event); } while (filter_str); /* Skip the ':' */ if (filter_start) filter_start++; /* filter starts here */ for (event = events; event; event = event->next) { ret = filter_event(filter, event->event, filter_start, filter->error_buffer); /* Failures are returned if a parse error happened */ if (ret < 0) rtn = ret; if (ret >= 0 && pevent->test_filters) { char *test; test = pevent_filter_make_string(filter, event->event->id); if (test) { printf(" '%s: %s'\n", event->event->name, test); free(test); } } } free_events(events); if (rtn >= 0 && pevent->test_filters) exit(0); return rtn; } static void free_filter_type(struct filter_type *filter_type) { free_arg(filter_type->filter); } /** * pevent_filter_strerror - fill error message in a buffer * @filter: the event filter contains error * @err: the error code * @buf: the buffer to be filled in * @buflen: the size of the buffer * * Returns 0 if message was filled successfully, -1 if error */ int pevent_filter_strerror(struct event_filter *filter, enum pevent_errno err, char *buf, size_t buflen) { if (err <= __PEVENT_ERRNO__START || err >= __PEVENT_ERRNO__END) return -1; if (strlen(filter->error_buffer) > 0) { size_t len = snprintf(buf, buflen, "%s", filter->error_buffer); if (len > buflen) return -1; return 0; } return pevent_strerror(filter->pevent, err, buf, buflen); } /** * pevent_filter_remove_event - remove a filter for an event * @filter: the event filter to remove from * @event_id: the event to remove a filter for * * Removes the filter saved for an event defined by @event_id * from the @filter. * * Returns 1: if an event was removed * 0: if the event was not found */ int pevent_filter_remove_event(struct event_filter *filter, int event_id) { struct filter_type *filter_type; unsigned long len; if (!filter->filters) return 0; filter_type = find_filter_type(filter, event_id); if (!filter_type) return 0; free_filter_type(filter_type); /* The filter_type points into the event_filters array */ len = (unsigned long)(filter->event_filters + filter->filters) - (unsigned long)(filter_type + 1); memmove(filter_type, filter_type + 1, len); filter->filters--; memset(&filter->event_filters[filter->filters], 0, sizeof(*filter_type)); return 1; } /** * pevent_filter_reset - clear all filters in a filter * @filter: the event filter to reset * * Removes all filters from a filter and resets it. */ void pevent_filter_reset(struct event_filter *filter) { int i; for (i = 0; i < filter->filters; i++) free_filter_type(&filter->event_filters[i]); free(filter->event_filters); filter->filters = 0; filter->event_filters = NULL; } void pevent_filter_free(struct event_filter *filter) { pevent_unref(filter->pevent); pevent_filter_reset(filter); free(filter); } static char *arg_to_str(struct event_filter *filter, struct filter_arg *arg); static int copy_filter_type(struct event_filter *filter, struct event_filter *source, struct filter_type *filter_type) { struct filter_arg *arg; struct event_format *event; const char *sys; const char *name; char *str; /* Can't assume that the pevent's are the same */ sys = filter_type->event->system; name = filter_type->event->name; event = pevent_find_event_by_name(filter->pevent, sys, name); if (!event) return -1; str = arg_to_str(source, filter_type->filter); if (!str) return -1; if (strcmp(str, "TRUE") == 0 || strcmp(str, "FALSE") == 0) { /* Add trivial event */ arg = allocate_arg(); if (arg == NULL) return -1; arg->type = FILTER_ARG_BOOLEAN; if (strcmp(str, "TRUE") == 0) arg->boolean.value = 1; else arg->boolean.value = 0; filter_type = add_filter_type(filter, event->id); if (filter_type == NULL) return -1; filter_type->filter = arg; free(str); return 0; } filter_event(filter, event, str, NULL); free(str); return 0; } /** * pevent_filter_copy - copy a filter using another filter * @dest - the filter to copy to * @source - the filter to copy from * * Returns 0 on success and -1 if not all filters were copied */ int pevent_filter_copy(struct event_filter *dest, struct event_filter *source) { int ret = 0; int i; pevent_filter_reset(dest); for (i = 0; i < source->filters; i++) { if (copy_filter_type(dest, source, &source->event_filters[i])) ret = -1; } return ret; } /** * pevent_update_trivial - update the trivial filters with the given filter * @dest - the filter to update * @source - the filter as the source of the update * @type - the type of trivial filter to update. * * Scan dest for trivial events matching @type to replace with the source. * * Returns 0 on success and -1 if there was a problem updating, but * events may have still been updated on error. */ int pevent_update_trivial(struct event_filter *dest, struct event_filter *source, enum filter_trivial_type type) { struct pevent *src_pevent; struct pevent *dest_pevent; struct event_format *event; struct filter_type *filter_type; struct filter_arg *arg; char *str; int i; src_pevent = source->pevent; dest_pevent = dest->pevent; /* Do nothing if either of the filters has nothing to filter */ if (!dest->filters || !source->filters) return 0; for (i = 0; i < dest->filters; i++) { filter_type = &dest->event_filters[i]; arg = filter_type->filter; if (arg->type != FILTER_ARG_BOOLEAN) continue; if ((arg->boolean.value && type == FILTER_TRIVIAL_FALSE) || (!arg->boolean.value && type == FILTER_TRIVIAL_TRUE)) continue; event = filter_type->event; if (src_pevent != dest_pevent) { /* do a look up */ event = pevent_find_event_by_name(src_pevent, event->system, event->name); if (!event) return -1; } str = pevent_filter_make_string(source, event->id); if (!str) continue; /* Don't bother if the filter is trivial too */ if (strcmp(str, "TRUE") != 0 && strcmp(str, "FALSE") != 0) filter_event(dest, event, str, NULL); free(str); } return 0; } /** * pevent_filter_clear_trivial - clear TRUE and FALSE filters * @filter: the filter to remove trivial filters from * @type: remove only true, false, or both * * Removes filters that only contain a TRUE or FALES boolean arg. * * Returns 0 on success and -1 if there was a problem. */ int pevent_filter_clear_trivial(struct event_filter *filter, enum filter_trivial_type type) { struct filter_type *filter_type; int count = 0; int *ids = NULL; int i; if (!filter->filters) return 0; /* * Two steps, first get all ids with trivial filters. * then remove those ids. */ for (i = 0; i < filter->filters; i++) { int *new_ids; filter_type = &filter->event_filters[i]; if (filter_type->filter->type != FILTER_ARG_BOOLEAN) continue; switch (type) { case FILTER_TRIVIAL_FALSE: if (filter_type->filter->boolean.value) continue; case FILTER_TRIVIAL_TRUE: if (!filter_type->filter->boolean.value) continue; default: break; } new_ids = realloc(ids, sizeof(*ids) * (count + 1)); if (!new_ids) { free(ids); return -1; } ids = new_ids; ids[count++] = filter_type->event_id; } if (!count) return 0; for (i = 0; i < count; i++) pevent_filter_remove_event(filter, ids[i]); free(ids); return 0; } /** * pevent_filter_event_has_trivial - return true event contains trivial filter * @filter: the filter with the information * @event_id: the id of the event to test * @type: trivial type to test for (TRUE, FALSE, EITHER) * * Returns 1 if the event contains a matching trivial type * otherwise 0. */ int pevent_filter_event_has_trivial(struct event_filter *filter, int event_id, enum filter_trivial_type type) { struct filter_type *filter_type; if (!filter->filters) return 0; filter_type = find_filter_type(filter, event_id); if (!filter_type) return 0; if (filter_type->filter->type != FILTER_ARG_BOOLEAN) return 0; switch (type) { case FILTER_TRIVIAL_FALSE: return !filter_type->filter->boolean.value; case FILTER_TRIVIAL_TRUE: return filter_type->filter->boolean.value; default: return 1; } } static int test_filter(struct event_format *event, struct filter_arg *arg, struct pevent_record *record, enum pevent_errno *err); static const char * get_comm(struct event_format *event, struct pevent_record *record) { const char *comm; int pid; pid = pevent_data_pid(event->pevent, record); comm = pevent_data_comm_from_pid(event->pevent, pid); return comm; } static unsigned long long get_value(struct event_format *event, struct format_field *field, struct pevent_record *record) { unsigned long long val; /* Handle our dummy "comm" field */ if (field == &comm) { const char *name; name = get_comm(event, record); return (unsigned long)name; } pevent_read_number_field(field, record->data, &val); if (!(field->flags & FIELD_IS_SIGNED)) return val; switch (field->size) { case 1: return (char)val; case 2: return (short)val; case 4: return (int)val; case 8: return (long long)val; } return val; } static unsigned long long get_arg_value(struct event_format *event, struct filter_arg *arg, struct pevent_record *record, enum pevent_errno *err); static unsigned long long get_exp_value(struct event_format *event, struct filter_arg *arg, struct pevent_record *record, enum pevent_errno *err) { unsigned long long lval, rval; lval = get_arg_value(event, arg->exp.left, record, err); rval = get_arg_value(event, arg->exp.right, record, err); if (*err) { /* * There was an error, no need to process anymore. */ return 0; } switch (arg->exp.type) { case FILTER_EXP_ADD: return lval + rval; case FILTER_EXP_SUB: return lval - rval; case FILTER_EXP_MUL: return lval * rval; case FILTER_EXP_DIV: return lval / rval; case FILTER_EXP_MOD: return lval % rval; case FILTER_EXP_RSHIFT: return lval >> rval; case FILTER_EXP_LSHIFT: return lval << rval; case FILTER_EXP_AND: return lval & rval; case FILTER_EXP_OR: return lval | rval; case FILTER_EXP_XOR: return lval ^ rval; case FILTER_EXP_NOT: default: if (!*err) *err = PEVENT_ERRNO__INVALID_EXP_TYPE; } return 0; } static unsigned long long get_arg_value(struct event_format *event, struct filter_arg *arg, struct pevent_record *record, enum pevent_errno *err) { switch (arg->type) { case FILTER_ARG_FIELD: return get_value(event, arg->field.field, record); case FILTER_ARG_VALUE: if (arg->value.type != FILTER_NUMBER) { if (!*err) *err = PEVENT_ERRNO__NOT_A_NUMBER; } return arg->value.val; case FILTER_ARG_EXP: return get_exp_value(event, arg, record, err); default: if (!*err) *err = PEVENT_ERRNO__INVALID_ARG_TYPE; } return 0; } static int test_num(struct event_format *event, struct filter_arg *arg, struct pevent_record *record, enum pevent_errno *err) { unsigned long long lval, rval; lval = get_arg_value(event, arg->num.left, record, err); rval = get_arg_value(event, arg->num.right, record, err); if (*err) { /* * There was an error, no need to process anymore. */ return 0; } switch (arg->num.type) { case FILTER_CMP_EQ: return lval == rval; case FILTER_CMP_NE: return lval != rval; case FILTER_CMP_GT: return lval > rval; case FILTER_CMP_LT: return lval < rval; case FILTER_CMP_GE: return lval >= rval; case FILTER_CMP_LE: return lval <= rval; default: if (!*err) *err = PEVENT_ERRNO__ILLEGAL_INTEGER_CMP; return 0; } } static const char *get_field_str(struct filter_arg *arg, struct pevent_record *record) { struct event_format *event; struct pevent *pevent; unsigned long long addr; const char *val = NULL; char hex[64]; /* If the field is not a string convert it */ if (arg->str.field->flags & FIELD_IS_STRING) { val = record->data + arg->str.field->offset; /* * We need to copy the data since we can't be sure the field * is null terminated. */ if (*(val + arg->str.field->size - 1)) { /* copy it */ memcpy(arg->str.buffer, val, arg->str.field->size); /* the buffer is already NULL terminated */ val = arg->str.buffer; } } else { event = arg->str.field->event; pevent = event->pevent; addr = get_value(event, arg->str.field, record); if (arg->str.field->flags & (FIELD_IS_POINTER | FIELD_IS_LONG)) /* convert to a kernel symbol */ val = pevent_find_function(pevent, addr); if (val == NULL) { /* just use the hex of the string name */ snprintf(hex, 64, "0x%llx", addr); val = hex; } } return val; } static int test_str(struct event_format *event, struct filter_arg *arg, struct pevent_record *record, enum pevent_errno *err) { const char *val; if (arg->str.field == &comm) val = get_comm(event, record); else val = get_field_str(arg, record); switch (arg->str.type) { case FILTER_CMP_MATCH: return strcmp(val, arg->str.val) == 0; case FILTER_CMP_NOT_MATCH: return strcmp(val, arg->str.val) != 0; case FILTER_CMP_REGEX: /* Returns zero on match */ return !regexec(&arg->str.reg, val, 0, NULL, 0); case FILTER_CMP_NOT_REGEX: return regexec(&arg->str.reg, val, 0, NULL, 0); default: if (!*err) *err = PEVENT_ERRNO__ILLEGAL_STRING_CMP; return 0; } } static int test_op(struct event_format *event, struct filter_arg *arg, struct pevent_record *record, enum pevent_errno *err) { switch (arg->op.type) { case FILTER_OP_AND: return test_filter(event, arg->op.left, record, err) && test_filter(event, arg->op.right, record, err); case FILTER_OP_OR: return test_filter(event, arg->op.left, record, err) || test_filter(event, arg->op.right, record, err); case FILTER_OP_NOT: return !test_filter(event, arg->op.right, record, err); default: if (!*err) *err = PEVENT_ERRNO__INVALID_OP_TYPE; return 0; } } static int test_filter(struct event_format *event, struct filter_arg *arg, struct pevent_record *record, enum pevent_errno *err) { if (*err) { /* * There was an error, no need to process anymore. */ return 0; } switch (arg->type) { case FILTER_ARG_BOOLEAN: /* easy case */ return arg->boolean.value; case FILTER_ARG_OP: return test_op(event, arg, record, err); case FILTER_ARG_NUM: return test_num(event, arg, record, err); case FILTER_ARG_STR: return test_str(event, arg, record, err); case FILTER_ARG_EXP: case FILTER_ARG_VALUE: case FILTER_ARG_FIELD: /* * Expressions, fields and values evaluate * to true if they return non zero */ return !!get_arg_value(event, arg, record, err); default: if (!*err) *err = PEVENT_ERRNO__INVALID_ARG_TYPE; return 0; } } /** * pevent_event_filtered - return true if event has filter * @filter: filter struct with filter information * @event_id: event id to test if filter exists * * Returns 1 if filter found for @event_id * otherwise 0; */ int pevent_event_filtered(struct event_filter *filter, int event_id) { struct filter_type *filter_type; if (!filter->filters) return 0; filter_type = find_filter_type(filter, event_id); return filter_type ? 1 : 0; } /** * pevent_filter_match - test if a record matches a filter * @filter: filter struct with filter information * @record: the record to test against the filter * * Returns: match result or error code (prefixed with PEVENT_ERRNO__) * FILTER_MATCH - filter found for event and @record matches * FILTER_MISS - filter found for event and @record does not match * FILTER_NOT_FOUND - no filter found for @record's event * NO_FILTER - if no filters exist * otherwise - error occurred during test */ enum pevent_errno pevent_filter_match(struct event_filter *filter, struct pevent_record *record) { struct pevent *pevent = filter->pevent; struct filter_type *filter_type; int event_id; int ret; enum pevent_errno err = 0; filter_init_error_buf(filter); if (!filter->filters) return PEVENT_ERRNO__NO_FILTER; event_id = pevent_data_type(pevent, record); filter_type = find_filter_type(filter, event_id); if (!filter_type) return PEVENT_ERRNO__FILTER_NOT_FOUND; ret = test_filter(filter_type->event, filter_type->filter, record, &err); if (err) return err; return ret ? PEVENT_ERRNO__FILTER_MATCH : PEVENT_ERRNO__FILTER_MISS; } static char *op_to_str(struct event_filter *filter, struct filter_arg *arg) { char *str = NULL; char *left = NULL; char *right = NULL; char *op = NULL; int left_val = -1; int right_val = -1; int val; switch (arg->op.type) { case FILTER_OP_AND: op = "&&"; /* fall through */ case FILTER_OP_OR: if (!op) op = "||"; left = arg_to_str(filter, arg->op.left); right = arg_to_str(filter, arg->op.right); if (!left || !right) break; /* Try to consolidate boolean values */ if (strcmp(left, "TRUE") == 0) left_val = 1; else if (strcmp(left, "FALSE") == 0) left_val = 0; if (strcmp(right, "TRUE") == 0) right_val = 1; else if (strcmp(right, "FALSE") == 0) right_val = 0; if (left_val >= 0) { if ((arg->op.type == FILTER_OP_AND && !left_val) || (arg->op.type == FILTER_OP_OR && left_val)) { /* Just return left value */ str = left; left = NULL; break; } if (right_val >= 0) { /* just evaluate this. */ val = 0; switch (arg->op.type) { case FILTER_OP_AND: val = left_val && right_val; break; case FILTER_OP_OR: val = left_val || right_val; break; default: break; } asprintf(&str, val ? "TRUE" : "FALSE"); break; } } if (right_val >= 0) { if ((arg->op.type == FILTER_OP_AND && !right_val) || (arg->op.type == FILTER_OP_OR && right_val)) { /* Just return right value */ str = right; right = NULL; break; } /* The right value is meaningless */ str = left; left = NULL; break; } asprintf(&str, "(%s) %s (%s)", left, op, right); break; case FILTER_OP_NOT: op = "!"; right = arg_to_str(filter, arg->op.right); if (!right) break; /* See if we can consolidate */ if (strcmp(right, "TRUE") == 0) right_val = 1; else if (strcmp(right, "FALSE") == 0) right_val = 0; if (right_val >= 0) { /* just return the opposite */ asprintf(&str, right_val ? "FALSE" : "TRUE"); break; } asprintf(&str, "%s(%s)", op, right); break; default: /* ?? */ break; } free(left); free(right); return str; } static char *val_to_str(struct event_filter *filter, struct filter_arg *arg) { char *str = NULL; asprintf(&str, "%lld", arg->value.val); return str; } static char *field_to_str(struct event_filter *filter, struct filter_arg *arg) { return strdup(arg->field.field->name); } static char *exp_to_str(struct event_filter *filter, struct filter_arg *arg) { char *lstr; char *rstr; char *op; char *str = NULL; lstr = arg_to_str(filter, arg->exp.left); rstr = arg_to_str(filter, arg->exp.right); if (!lstr || !rstr) goto out; switch (arg->exp.type) { case FILTER_EXP_ADD: op = "+"; break; case FILTER_EXP_SUB: op = "-"; break; case FILTER_EXP_MUL: op = "*"; break; case FILTER_EXP_DIV: op = "/"; break; case FILTER_EXP_MOD: op = "%"; break; case FILTER_EXP_RSHIFT: op = ">>"; break; case FILTER_EXP_LSHIFT: op = "<<"; break; case FILTER_EXP_AND: op = "&"; break; case FILTER_EXP_OR: op = "|"; break; case FILTER_EXP_XOR: op = "^"; break; default: op = "[ERROR IN EXPRESSION TYPE]"; break; } asprintf(&str, "%s %s %s", lstr, op, rstr); out: free(lstr); free(rstr); return str; } static char *num_to_str(struct event_filter *filter, struct filter_arg *arg) { char *lstr; char *rstr; char *str = NULL; char *op = NULL; lstr = arg_to_str(filter, arg->num.left); rstr = arg_to_str(filter, arg->num.right); if (!lstr || !rstr) goto out; switch (arg->num.type) { case FILTER_CMP_EQ: op = "=="; /* fall through */ case FILTER_CMP_NE: if (!op) op = "!="; /* fall through */ case FILTER_CMP_GT: if (!op) op = ">"; /* fall through */ case FILTER_CMP_LT: if (!op) op = "<"; /* fall through */ case FILTER_CMP_GE: if (!op) op = ">="; /* fall through */ case FILTER_CMP_LE: if (!op) op = "<="; asprintf(&str, "%s %s %s", lstr, op, rstr); break; default: /* ?? */ break; } out: free(lstr); free(rstr); return str; } static char *str_to_str(struct event_filter *filter, struct filter_arg *arg) { char *str = NULL; char *op = NULL; switch (arg->str.type) { case FILTER_CMP_MATCH: op = "=="; /* fall through */ case FILTER_CMP_NOT_MATCH: if (!op) op = "!="; /* fall through */ case FILTER_CMP_REGEX: if (!op) op = "=~"; /* fall through */ case FILTER_CMP_NOT_REGEX: if (!op) op = "!~"; asprintf(&str, "%s %s \"%s\"", arg->str.field->name, op, arg->str.val); break; default: /* ?? */ break; } return str; } static char *arg_to_str(struct event_filter *filter, struct filter_arg *arg) { char *str = NULL; switch (arg->type) { case FILTER_ARG_BOOLEAN: asprintf(&str, arg->boolean.value ? "TRUE" : "FALSE"); return str; case FILTER_ARG_OP: return op_to_str(filter, arg); case FILTER_ARG_NUM: return num_to_str(filter, arg); case FILTER_ARG_STR: return str_to_str(filter, arg); case FILTER_ARG_VALUE: return val_to_str(filter, arg); case FILTER_ARG_FIELD: return field_to_str(filter, arg); case FILTER_ARG_EXP: return exp_to_str(filter, arg); default: /* ?? */ return NULL; } } /** * pevent_filter_make_string - return a string showing the filter * @filter: filter struct with filter information * @event_id: the event id to return the filter string with * * Returns a string that displays the filter contents. * This string must be freed with free(str). * NULL is returned if no filter is found or allocation failed. */ char * pevent_filter_make_string(struct event_filter *filter, int event_id) { struct filter_type *filter_type; if (!filter->filters) return NULL; filter_type = find_filter_type(filter, event_id); if (!filter_type) return NULL; return arg_to_str(filter, filter_type->filter); } /** * pevent_filter_compare - compare two filters and return if they are the same * @filter1: Filter to compare with @filter2 * @filter2: Filter to compare with @filter1 * * Returns: * 1 if the two filters hold the same content. * 0 if they do not. */ int pevent_filter_compare(struct event_filter *filter1, struct event_filter *filter2) { struct filter_type *filter_type1; struct filter_type *filter_type2; char *str1, *str2; int result; int i; /* Do the easy checks first */ if (filter1->filters != filter2->filters) return 0; if (!filter1->filters && !filter2->filters) return 1; /* * Now take a look at each of the events to see if they have the same * filters to them. */ for (i = 0; i < filter1->filters; i++) { filter_type1 = &filter1->event_filters[i]; filter_type2 = find_filter_type(filter2, filter_type1->event_id); if (!filter_type2) break; if (filter_type1->filter->type != filter_type2->filter->type) break; switch (filter_type1->filter->type) { case FILTER_TRIVIAL_FALSE: case FILTER_TRIVIAL_TRUE: /* trivial types just need the type compared */ continue; default: break; } /* The best way to compare complex filters is with strings */ str1 = arg_to_str(filter1, filter_type1->filter); str2 = arg_to_str(filter2, filter_type2->filter); if (str1 && str2) result = strcmp(str1, str2) != 0; else /* bail out if allocation fails */ result = 1; free(str1); free(str2); if (result) break; } if (i < filter1->filters) return 0; return 1; } trace-cmd-2.5.3/parse-utils.c000066400000000000000000000027031246701203100157720ustar00rootroot00000000000000#include #include #include #include #include #define __weak __attribute__((weak)) void __vdie(const char *fmt, va_list ap) { int ret = errno; if (errno) perror("trace-cmd"); else ret = -1; fprintf(stderr, " "); vfprintf(stderr, fmt, ap); fprintf(stderr, "\n"); exit(ret); } void __die(const char *fmt, ...) { va_list ap; va_start(ap, fmt); __vdie(fmt, ap); va_end(ap); } void __weak die(const char *fmt, ...) { va_list ap; va_start(ap, fmt); __vdie(fmt, ap); va_end(ap); } void __vwarning(const char *fmt, va_list ap) { if (errno) perror("trace-cmd"); errno = 0; fprintf(stderr, " "); vfprintf(stderr, fmt, ap); fprintf(stderr, "\n"); } void __warning(const char *fmt, ...) { va_list ap; va_start(ap, fmt); __vwarning(fmt, ap); va_end(ap); } void __weak warning(const char *fmt, ...) { va_list ap; va_start(ap, fmt); __vwarning(fmt, ap); va_end(ap); } void __vpr_stat(const char *fmt, va_list ap) { vprintf(fmt, ap); printf("\n"); } void __pr_stat(const char *fmt, ...) { va_list ap; va_start(ap, fmt); __vpr_stat(fmt, ap); va_end(ap); } void __weak vpr_stat(const char *fmt, va_list ap) { __vpr_stat(fmt, ap); } void __weak pr_stat(const char *fmt, ...) { va_list ap; va_start(ap, fmt); __vpr_stat(fmt, ap); va_end(ap); } void __weak *malloc_or_die(unsigned int size) { void *data; data = malloc(size); if (!data) die("malloc"); return data; } trace-cmd-2.5.3/plugin_blk.c000066400000000000000000000232261246701203100156530ustar00rootroot00000000000000/* * Copyright (C) 2009 Red Hat Inc, Steven Rostedt * * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ * This program is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; * version 2.1 of the License (not later!) * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this program; if not, see * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA * * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ */ #include #include #include #include #include "trace-cmd.h" #define MINORBITS 20 #define MINORMASK ((1U << MINORBITS) - 1) #define MAJOR(dev) ((unsigned int) ((dev) >> MINORBITS)) #define MINOR(dev) ((unsigned int) ((dev) & MINORMASK)) #define ARRAY_SIZE(arr) (sizeof(arr) / sizeof((arr)[0])) struct blk_data { unsigned long long sector; struct event_format *event; unsigned int action; unsigned int pid; unsigned int device; unsigned int bytes; unsigned int error; void *pdu_data; unsigned short pdu_len; }; static void fill_rwbs(char *rwbs, int action, unsigned int bytes) { int i = 0; int tc = action >> BLK_TC_SHIFT; if (action == BLK_TN_MESSAGE) { rwbs[i++] = 'N'; goto out; } #if defined(HAVE_BLK_TC_FLUSH) if (tc & BLK_TC_FLUSH) rwbs[i++] = 'F'; #endif if (tc & BLK_TC_DISCARD) rwbs[i++] = 'D'; else if (tc & BLK_TC_WRITE) rwbs[i++] = 'W'; else if (bytes) rwbs[i++] = 'R'; else rwbs[i++] = 'N'; #if defined(HAVE_BLK_TC_FLUSH) if (tc & BLK_TC_FUA) rwbs[i++] = 'F'; #endif if (tc & BLK_TC_AHEAD) rwbs[i++] = 'A'; #if !defined(HAVE_BLK_TC_FLUSH) if (tc & BLK_TC_BARRIER) rwbs[i++] = 'B'; #endif if (tc & BLK_TC_SYNC) rwbs[i++] = 'S'; if (tc & BLK_TC_META) rwbs[i++] = 'M'; out: rwbs[i] = '\0'; } static int log_action(struct trace_seq *s, struct blk_data *data, const char *act) { char rwbs[6]; fill_rwbs(rwbs, data->action, data->bytes); return trace_seq_printf(s, "%3d,%-3d %2s %3s ", MAJOR(data->device), MINOR(data->device), act, rwbs); } static void blk_log_msg(struct trace_seq *s, void *data, int len) { trace_seq_printf(s, "%.*s", len, (char *)data); } static int blk_log_dump_pdu(struct trace_seq *s, const unsigned char *pdu_buf, int pdu_len) { int i, end, ret; if (!pdu_len) return 1; /* find the last zero that needs to be printed */ for (end = pdu_len - 1; end >= 0; end--) if (pdu_buf[end]) break; end++; if (!trace_seq_putc(s, '(')) return 0; for (i = 0; i < pdu_len; i++) { ret = trace_seq_printf(s, "%s%02x", i == 0 ? "" : " ", pdu_buf[i]); if (!ret) return ret; /* * stop when the rest is just zeroes and indicate so * with a ".." appended */ if (i == end && end != pdu_len - 1) return trace_seq_puts(s, " ..) "); } return trace_seq_puts(s, ") "); } static unsigned int t_sec(int bytes) { return bytes >> 9; } static unsigned int be32_to_cpu(unsigned int val) { unsigned int swap; if (tracecmd_host_bigendian()) return val; swap = ((val & 0xffULL) << 24) | ((val & (0xffULL << 8)) << 8) | ((val & (0xffULL << 16)) >> 8) | ((val & (0xffULL << 24)) >> 24); return swap; } static unsigned long long be64_to_cpu(unsigned long long val) { unsigned long long swap; if (tracecmd_host_bigendian()) return val; swap = ((val & 0xffULL) << 56) | ((val & (0xffULL << 8)) << 40) | ((val & (0xffULL << 16)) << 24) | ((val & (0xffULL << 24)) << 8) | ((val & (0xffULL << 32)) >> 8) | ((val & (0xffULL << 40)) >> 24) | ((val & (0xffULL << 48)) >> 40) | ((val & (0xffULL << 56)) >> 56); return swap; } static unsigned long long get_pdu_int(void *data) { const unsigned long long *val = data; return be64_to_cpu(*val); } static void get_pdu_remap(void *pdu_data, struct blk_io_trace_remap *r) { const struct blk_io_trace_remap *__r = pdu_data; unsigned long long sector_from = __r->sector_from; r->device_from = be32_to_cpu(__r->device_from); r->device_to = be32_to_cpu(__r->device_to); r->sector_from = be64_to_cpu(sector_from); } static int blk_log_remap(struct trace_seq *s, struct blk_data *data) { struct blk_io_trace_remap r = { .device_from = 0, }; get_pdu_remap(data->pdu_data, &r); return trace_seq_printf(s, "%llu + %u <- (%d,%d) %llu\n", data->sector, t_sec(data->bytes), MAJOR(r.device_from), MINOR(r.device_from), (unsigned long long)r.sector_from); } static int blk_log_split(struct trace_seq *s, struct blk_data *data) { const char *cmd; cmd = pevent_data_comm_from_pid(data->event->pevent, data->pid); return trace_seq_printf(s, "%llu / %llu [%s]\n", data->sector, get_pdu_int(data->pdu_data), cmd); } static int blk_log_plug(struct trace_seq *s, struct blk_data *data) { const char *cmd; cmd = pevent_data_comm_from_pid(data->event->pevent, data->pid); return trace_seq_printf(s, "[%s]\n", cmd); } static int blk_log_unplug(struct trace_seq *s, struct blk_data *data) { const char *cmd; cmd = pevent_data_comm_from_pid(data->event->pevent, data->pid); return trace_seq_printf(s, "[%s] %llu\n", cmd, get_pdu_int(data->pdu_data)); } static int blk_log_with_error(struct trace_seq *s, struct blk_data *data) { if (data->action & BLK_TC_ACT(BLK_TC_PC)) { blk_log_dump_pdu(s, data->pdu_data, data->pdu_len); trace_seq_printf(s, "[%d]\n", data->error); return 0; } else { if (t_sec(data->bytes)) return trace_seq_printf(s, "%llu + %u [%d]\n", data->sector, t_sec(data->bytes), data->error); return trace_seq_printf(s, "%llu [%d]\n", data->sector, data->error); } } static int blk_log_generic(struct trace_seq *s, struct blk_data *data) { const char *cmd; cmd = pevent_data_comm_from_pid(data->event->pevent, data->pid); if (data->action & BLK_TC_ACT(BLK_TC_PC)) { int ret; ret = trace_seq_printf(s, "%u ", data->bytes); if (!ret) return 0; ret = blk_log_dump_pdu(s, data->pdu_data, data->pdu_len); if (!ret) return 0; return trace_seq_printf(s, "[%s]\n", cmd); } else { if (t_sec(data->bytes)) return trace_seq_printf(s, "%llu + %u [%s]\n", data->sector, t_sec(data->bytes), cmd); return trace_seq_printf(s, "[%s]\n", cmd); } } static const struct { const char *act[2]; int (*print)(struct trace_seq *s, struct blk_data *data); } what2act[] = { [__BLK_TA_QUEUE] = {{ "Q", "queue" }, blk_log_generic }, [__BLK_TA_BACKMERGE] = {{ "M", "backmerge" }, blk_log_generic }, [__BLK_TA_FRONTMERGE] = {{ "F", "frontmerge" }, blk_log_generic }, [__BLK_TA_GETRQ] = {{ "G", "getrq" }, blk_log_generic }, [__BLK_TA_SLEEPRQ] = {{ "S", "sleeprq" }, blk_log_generic }, [__BLK_TA_REQUEUE] = {{ "R", "requeue" }, blk_log_with_error }, [__BLK_TA_ISSUE] = {{ "D", "issue" }, blk_log_generic }, [__BLK_TA_COMPLETE] = {{ "C", "complete" }, blk_log_with_error }, [__BLK_TA_PLUG] = {{ "P", "plug" }, blk_log_plug }, [__BLK_TA_UNPLUG_IO] = {{ "U", "unplug_io" }, blk_log_unplug }, [__BLK_TA_UNPLUG_TIMER] = {{ "UT", "unplug_timer" }, blk_log_unplug }, [__BLK_TA_INSERT] = {{ "I", "insert" }, blk_log_generic }, [__BLK_TA_SPLIT] = {{ "X", "split" }, blk_log_split }, [__BLK_TA_BOUNCE] = {{ "B", "bounce" }, blk_log_generic }, [__BLK_TA_REMAP] = {{ "A", "remap" }, blk_log_remap }, }; static int blktrace_handler(struct trace_seq *s, struct pevent_record *record, struct event_format *event, void *context) { struct format_field *field; unsigned long long val; void *data = record->data; struct blk_data blk_data; unsigned short what; int long_act = 0; field = pevent_find_field(event, "action"); if (!field) return 1; if (pevent_read_number_field(field, data, &val)) return 1; blk_data.action = val; field = pevent_find_field(event, "bytes"); if (!field) return 1; if (pevent_read_number_field(field, data, &val)) return 1; blk_data.bytes = val; field = pevent_find_field(event, "device"); if (!field) return 1; if (pevent_read_number_field(field, data, &val)) return 1; blk_data.device = val; field = pevent_find_field(event, "pdu_len"); if (!field) return 1; if (pevent_read_number_field(field, data, &val)) return 1; blk_data.pdu_len = val; field = pevent_find_field(event, "data"); if (!field) return 1; blk_data.pdu_data = data + field->offset; field = pevent_find_field(event, "sector"); if (!field) return 1; if (pevent_read_number_field(field, data, &blk_data.sector)) return 1; field = pevent_find_field(event, "pid"); if (!field) return 1; if (pevent_read_number_field(field, data, &val)) return 1; blk_data.pid = val; field = pevent_find_field(event, "error"); if (!field) return 1; if (pevent_read_number_field(field, data, &val)) return 1; blk_data.error = val; blk_data.event = event; what = blk_data.action & ((1 << BLK_TC_SHIFT) - 1); if (blk_data.action == BLK_TN_MESSAGE) { log_action(s, &blk_data, "m"); blk_log_msg(s, blk_data.pdu_data, blk_data.pdu_len); goto out; } if (what == 0 || what >= ARRAY_SIZE(what2act)) trace_seq_printf(s, "Unknown action %x\n", what); else { log_action(s, &blk_data, what2act[what].act[long_act]); what2act[what].print(s, &blk_data); } out: return 0; } int PEVENT_PLUGIN_LOADER(struct pevent *pevent) { pevent_register_event_handler(pevent, -1, "ftrace", "blktrace", blktrace_handler, NULL); return 0; } trace-cmd-2.5.3/plugin_cfg80211.c000066400000000000000000000013311246701203100162270ustar00rootroot00000000000000#include #include #include #include #include "event-parse.h" static unsigned long long process___le16_to_cpup(struct trace_seq *s, unsigned long long *args) { uint16_t *val = (uint16_t *) (unsigned long) args[0]; return val ? (long long) le16toh(*val) : 0; } int PEVENT_PLUGIN_LOADER(struct pevent *pevent) { pevent_register_print_function(pevent, process___le16_to_cpup, PEVENT_FUNC_ARG_INT, "__le16_to_cpup", PEVENT_FUNC_ARG_PTR, PEVENT_FUNC_ARG_VOID); return 0; } void PEVENT_PLUGIN_UNLOADER(struct pevent *pevent) { pevent_unregister_print_function(pevent, process___le16_to_cpup, "__le16_to_cpup"); } trace-cmd-2.5.3/plugin_function.c000066400000000000000000000105031246701203100167220ustar00rootroot00000000000000/* * Copyright (C) 2009, 2010 Red Hat Inc, Steven Rostedt * * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ * This program is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; * version 2.1 of the License (not later!) * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this program; if not, see * * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ */ #include #include #include #include "trace-cmd.h" static struct func_stack { int size; char **stack; } *fstack; static int cpus = -1; #define STK_BLK 10 struct plugin_option plugin_options[] = { { .name = "parent", .plugin_alias = "ftrace", .description = "Print parent of functions for function events", }, { .name = "indent", .plugin_alias = "ftrace", .description = "Try to show function call indents, based on parents", .set = 1, }, { .name = NULL, } }; static struct plugin_option *ftrace_parent = &plugin_options[0]; static struct plugin_option *ftrace_indent = &plugin_options[1]; static void add_child(struct func_stack *stack, const char *child, int pos) { int i; if (!child) return; if (pos < stack->size) free(stack->stack[pos]); else { char **ptr; ptr = realloc(stack->stack, sizeof(char *) * (stack->size + STK_BLK)); if (!ptr) { warning("could not allocate plugin memory\n"); return; } stack->stack = ptr; for (i = stack->size; i < stack->size + STK_BLK; i++) stack->stack[i] = NULL; stack->size += STK_BLK; } stack->stack[pos] = strdup(child); } static int add_and_get_index(const char *parent, const char *child, int cpu) { int i; if (cpu < 0) return 0; if (cpu > cpus) { struct func_stack *ptr; ptr = realloc(fstack, sizeof(*fstack) * (cpu + 1)); if (!ptr) { warning("could not allocate plugin memory\n"); return 0; } fstack = ptr; /* Account for holes in the cpu count */ for (i = cpus + 1; i <= cpu; i++) memset(&fstack[i], 0, sizeof(fstack[i])); cpus = cpu; } for (i = 0; i < fstack[cpu].size && fstack[cpu].stack[i]; i++) { if (strcmp(parent, fstack[cpu].stack[i]) == 0) { add_child(&fstack[cpu], child, i+1); return i; } } /* Not found */ add_child(&fstack[cpu], parent, 0); add_child(&fstack[cpu], child, 1); return 0; } static int function_handler(struct trace_seq *s, struct pevent_record *record, struct event_format *event, void *context) { struct pevent *pevent = event->pevent; unsigned long long function; unsigned long long pfunction; const char *func; const char *parent; int index; if (pevent_get_field_val(s, event, "ip", record, &function, 1)) return trace_seq_putc(s, '!'); func = pevent_find_function(pevent, function); if (pevent_get_field_val(s, event, "parent_ip", record, &pfunction, 1)) return trace_seq_putc(s, '!'); parent = pevent_find_function(pevent, pfunction); if (parent && ftrace_indent->set) index = add_and_get_index(parent, func, record->cpu); trace_seq_printf(s, "%*s", index*3, ""); if (func) trace_seq_printf(s, "%s", func); else trace_seq_printf(s, "0x%llx", function); if (ftrace_parent->set) { trace_seq_printf(s, " <-- "); if (parent) trace_seq_printf(s, "%s", parent); else trace_seq_printf(s, "0x%llx", pfunction); } return 0; } int PEVENT_PLUGIN_LOADER(struct pevent *pevent) { pevent_register_event_handler(pevent, -1, "ftrace", "function", function_handler, NULL); trace_util_add_options("ftrace", plugin_options); return 0; } void PEVENT_PLUGIN_UNLOADER(struct pevent *pevent) { int i, x; pevent_unregister_event_handler(pevent, -1, "ftrace", "function", function_handler, NULL); for (i = 0; i <= cpus; i++) { for (x = 0; x < fstack[i].size && fstack[i].stack[x]; x++) free(fstack[i].stack[x]); free(fstack[i].stack); } trace_util_remove_options(plugin_options); free(fstack); fstack = NULL; cpus = -1; } trace-cmd-2.5.3/plugin_hrtimer.c000066400000000000000000000052201246701203100165470ustar00rootroot00000000000000/* * Copyright (C) 2009 Red Hat Inc, Steven Rostedt * Copyright (C) 2009 Johannes Berg * * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ * This program is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; * version 2.1 of the License (not later!) * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this program; if not, see * * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ */ #include #include #include #include "event-parse.h" static int timer_expire_handler(struct trace_seq *s, struct pevent_record *record, struct event_format *event, void *context) { trace_seq_printf(s, "hrtimer="); if (pevent_print_num_field(s, "0x%llx", event, "timer", record, 0) == -1) pevent_print_num_field(s, "0x%llx", event, "hrtimer", record, 1); trace_seq_printf(s, " now="); pevent_print_num_field(s, "%llu", event, "now", record, 1); pevent_print_func_field(s, " function=%s", event, "function", record, 0); return 0; } static int timer_start_handler(struct trace_seq *s, struct pevent_record *record, struct event_format *event, void *context) { trace_seq_printf(s, "hrtimer="); if (pevent_print_num_field(s, "0x%llx", event, "timer", record, 0) == -1) pevent_print_num_field(s, "0x%llx", event, "hrtimer", record, 1); pevent_print_func_field(s, " function=%s", event, "function", record, 0); trace_seq_printf(s, " expires="); pevent_print_num_field(s, "%llu", event, "expires", record, 1); trace_seq_printf(s, " softexpires="); pevent_print_num_field(s, "%llu", event, "softexpires", record, 1); return 0; } int PEVENT_PLUGIN_LOADER(struct pevent *pevent) { pevent_register_event_handler(pevent, -1, "timer", "hrtimer_expire_entry", timer_expire_handler, NULL); pevent_register_event_handler(pevent, -1, "timer", "hrtimer_start", timer_start_handler, NULL); return 0; } void PEVENT_PLUGIN_UNLOADER(struct pevent *pevent) { pevent_unregister_event_handler(pevent, -1, "timer", "hrtimer_expire_entry", timer_expire_handler, NULL); pevent_unregister_event_handler(pevent, -1, "timer", "hrtimer_start", timer_start_handler, NULL); } trace-cmd-2.5.3/plugin_jbd2.c000066400000000000000000000043401246701203100157200ustar00rootroot00000000000000/* * Copyright (C) 2010 Red Hat Inc, Steven Rostedt * * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ * This program is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; * version 2.1 of the License (not later!) * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this program; if not, see * * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ */ #include #include #include #include "event-parse.h" #define MINORBITS 20 #define MINORMASK ((1U << MINORBITS) - 1) #define MAJOR(dev) ((unsigned int) ((dev) >> MINORBITS)) #define MINOR(dev) ((unsigned int) ((dev) & MINORMASK)) static unsigned long long process_jbd2_dev_to_name(struct trace_seq *s, unsigned long long *args) { unsigned int dev = args[0]; trace_seq_printf(s, "%d:%d", MAJOR(dev), MINOR(dev)); return 0; } static unsigned long long process_jiffies_to_msecs(struct trace_seq *s, unsigned long long *args) { unsigned long long jiffies = args[0]; trace_seq_printf(s, "%lld", jiffies); return jiffies; } int PEVENT_PLUGIN_LOADER(struct pevent *pevent) { pevent_register_print_function(pevent, process_jbd2_dev_to_name, PEVENT_FUNC_ARG_STRING, "jbd2_dev_to_name", PEVENT_FUNC_ARG_INT, PEVENT_FUNC_ARG_VOID); pevent_register_print_function(pevent, process_jiffies_to_msecs, PEVENT_FUNC_ARG_LONG, "jiffies_to_msecs", PEVENT_FUNC_ARG_LONG, PEVENT_FUNC_ARG_VOID); return 0; } void PEVENT_PLUGIN_UNLOADER(struct pevent *pevent) { pevent_unregister_print_function(pevent, process_jbd2_dev_to_name, "jbd2_dev_to_name"); pevent_unregister_print_function(pevent, process_jiffies_to_msecs, "jiffies_to_msecs"); } trace-cmd-2.5.3/plugin_kmem.c000066400000000000000000000055321246701203100160340ustar00rootroot00000000000000/* * Copyright (C) 2009 Red Hat Inc, Steven Rostedt * * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ * This program is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; * version 2.1 of the License (not later!) * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this program; if not, see * * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ */ #include #include #include #include "trace-cmd.h" static int call_site_handler(struct trace_seq *s, struct pevent_record *record, struct event_format *event, void *context) { struct format_field *field; unsigned long long val, addr; void *data = record->data; const char *func; field = pevent_find_field(event, "call_site"); if (!field) return 1; if (pevent_read_number_field(field, data, &val)) return 1; func = pevent_find_function(event->pevent, val); if (!func) return 1; addr = pevent_find_function_address(event->pevent, val); trace_seq_printf(s, "(%s+0x%x) ", func, (int)(val - addr)); return 1; } int PEVENT_PLUGIN_LOADER(struct pevent *pevent) { pevent_register_event_handler(pevent, -1, "kmem", "kfree", call_site_handler, NULL); pevent_register_event_handler(pevent, -1, "kmem", "kmalloc", call_site_handler, NULL); pevent_register_event_handler(pevent, -1, "kmem", "kmalloc_node", call_site_handler, NULL); pevent_register_event_handler(pevent, -1, "kmem", "kmem_cache_alloc", call_site_handler, NULL); pevent_register_event_handler(pevent, -1, "kmem", "kmem_cache_alloc_node", call_site_handler, NULL); pevent_register_event_handler(pevent, -1, "kmem", "kmem_cache_free", call_site_handler, NULL); return 0; } void PEVENT_PLUGIN_UNLOADER(struct pevent *pevent) { pevent_unregister_event_handler(pevent, -1, "kmem", "kfree", call_site_handler, NULL); pevent_unregister_event_handler(pevent, -1, "kmem", "kmalloc", call_site_handler, NULL); pevent_unregister_event_handler(pevent, -1, "kmem", "kmalloc_node", call_site_handler, NULL); pevent_unregister_event_handler(pevent, -1, "kmem", "kmem_cache_alloc", call_site_handler, NULL); pevent_unregister_event_handler(pevent, -1, "kmem", "kmem_cache_alloc_node", call_site_handler, NULL); pevent_unregister_event_handler(pevent, -1, "kmem", "kmem_cache_free", call_site_handler, NULL); } trace-cmd-2.5.3/plugin_kvm.c000066400000000000000000000325371246701203100157050ustar00rootroot00000000000000/* * Copyright (C) 2009 Red Hat Inc, Steven Rostedt * * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ * This program is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; * version 2.1 of the License (not later!) * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this program; if not, see * * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ */ #include #include #include #include #include "event-parse.h" #ifdef HAVE_UDIS86 #include static ud_t ud; static void init_disassembler(void) { ud_init(&ud); ud_set_syntax(&ud, UD_SYN_ATT); } static const char *disassemble(unsigned char *insn, int len, uint64_t rip, int cr0_pe, int eflags_vm, int cs_d, int cs_l) { int mode; if (!cr0_pe) mode = 16; else if (eflags_vm) mode = 16; else if (cs_l) mode = 64; else if (cs_d) mode = 32; else mode = 16; ud_set_pc(&ud, rip); ud_set_mode(&ud, mode); ud_set_input_buffer(&ud, insn, len); ud_disassemble(&ud); return ud_insn_asm(&ud); } #else static void init_disassembler(void) { } static const char *disassemble(unsigned char *insn, int len, uint64_t rip, int cr0_pe, int eflags_vm, int cs_d, int cs_l) { static char out[15*3+1]; int i; for (i = 0; i < len; ++i) sprintf(out + i * 3, "%02x ", insn[i]); out[len*3-1] = '\0'; return out; } #endif #define VMX_EXIT_REASONS \ _ER(EXCEPTION_NMI, 0) \ _ER(EXTERNAL_INTERRUPT, 1) \ _ER(TRIPLE_FAULT, 2) \ _ER(PENDING_INTERRUPT, 7) \ _ER(NMI_WINDOW, 8) \ _ER(TASK_SWITCH, 9) \ _ER(CPUID, 10) \ _ER(HLT, 12) \ _ER(INVD, 13) \ _ER(INVLPG, 14) \ _ER(RDPMC, 15) \ _ER(RDTSC, 16) \ _ER(VMCALL, 18) \ _ER(VMCLEAR, 19) \ _ER(VMLAUNCH, 20) \ _ER(VMPTRLD, 21) \ _ER(VMPTRST, 22) \ _ER(VMREAD, 23) \ _ER(VMRESUME, 24) \ _ER(VMWRITE, 25) \ _ER(VMOFF, 26) \ _ER(VMON, 27) \ _ER(CR_ACCESS, 28) \ _ER(DR_ACCESS, 29) \ _ER(IO_INSTRUCTION, 30) \ _ER(MSR_READ, 31) \ _ER(MSR_WRITE, 32) \ _ER(MWAIT_INSTRUCTION, 36) \ _ER(MONITOR_INSTRUCTION,39) \ _ER(PAUSE_INSTRUCTION, 40) \ _ER(MCE_DURING_VMENTRY, 41) \ _ER(TPR_BELOW_THRESHOLD,43) \ _ER(APIC_ACCESS, 44) \ _ER(EOI_INDUCED, 45) \ _ER(EPT_VIOLATION, 48) \ _ER(EPT_MISCONFIG, 49) \ _ER(INVEPT, 50) \ _ER(PREEMPTION_TIMER, 52) \ _ER(WBINVD, 54) \ _ER(XSETBV, 55) \ _ER(APIC_WRITE, 56) \ _ER(INVPCID, 58) #define SVM_EXIT_REASONS \ _ER(EXIT_READ_CR0, 0x000) \ _ER(EXIT_READ_CR3, 0x003) \ _ER(EXIT_READ_CR4, 0x004) \ _ER(EXIT_READ_CR8, 0x008) \ _ER(EXIT_WRITE_CR0, 0x010) \ _ER(EXIT_WRITE_CR3, 0x013) \ _ER(EXIT_WRITE_CR4, 0x014) \ _ER(EXIT_WRITE_CR8, 0x018) \ _ER(EXIT_READ_DR0, 0x020) \ _ER(EXIT_READ_DR1, 0x021) \ _ER(EXIT_READ_DR2, 0x022) \ _ER(EXIT_READ_DR3, 0x023) \ _ER(EXIT_READ_DR4, 0x024) \ _ER(EXIT_READ_DR5, 0x025) \ _ER(EXIT_READ_DR6, 0x026) \ _ER(EXIT_READ_DR7, 0x027) \ _ER(EXIT_WRITE_DR0, 0x030) \ _ER(EXIT_WRITE_DR1, 0x031) \ _ER(EXIT_WRITE_DR2, 0x032) \ _ER(EXIT_WRITE_DR3, 0x033) \ _ER(EXIT_WRITE_DR4, 0x034) \ _ER(EXIT_WRITE_DR5, 0x035) \ _ER(EXIT_WRITE_DR6, 0x036) \ _ER(EXIT_WRITE_DR7, 0x037) \ _ER(EXIT_EXCP_BASE, 0x040) \ _ER(EXIT_INTR, 0x060) \ _ER(EXIT_NMI, 0x061) \ _ER(EXIT_SMI, 0x062) \ _ER(EXIT_INIT, 0x063) \ _ER(EXIT_VINTR, 0x064) \ _ER(EXIT_CR0_SEL_WRITE, 0x065) \ _ER(EXIT_IDTR_READ, 0x066) \ _ER(EXIT_GDTR_READ, 0x067) \ _ER(EXIT_LDTR_READ, 0x068) \ _ER(EXIT_TR_READ, 0x069) \ _ER(EXIT_IDTR_WRITE, 0x06a) \ _ER(EXIT_GDTR_WRITE, 0x06b) \ _ER(EXIT_LDTR_WRITE, 0x06c) \ _ER(EXIT_TR_WRITE, 0x06d) \ _ER(EXIT_RDTSC, 0x06e) \ _ER(EXIT_RDPMC, 0x06f) \ _ER(EXIT_PUSHF, 0x070) \ _ER(EXIT_POPF, 0x071) \ _ER(EXIT_CPUID, 0x072) \ _ER(EXIT_RSM, 0x073) \ _ER(EXIT_IRET, 0x074) \ _ER(EXIT_SWINT, 0x075) \ _ER(EXIT_INVD, 0x076) \ _ER(EXIT_PAUSE, 0x077) \ _ER(EXIT_HLT, 0x078) \ _ER(EXIT_INVLPG, 0x079) \ _ER(EXIT_INVLPGA, 0x07a) \ _ER(EXIT_IOIO, 0x07b) \ _ER(EXIT_MSR, 0x07c) \ _ER(EXIT_TASK_SWITCH, 0x07d) \ _ER(EXIT_FERR_FREEZE, 0x07e) \ _ER(EXIT_SHUTDOWN, 0x07f) \ _ER(EXIT_VMRUN, 0x080) \ _ER(EXIT_VMMCALL, 0x081) \ _ER(EXIT_VMLOAD, 0x082) \ _ER(EXIT_VMSAVE, 0x083) \ _ER(EXIT_STGI, 0x084) \ _ER(EXIT_CLGI, 0x085) \ _ER(EXIT_SKINIT, 0x086) \ _ER(EXIT_RDTSCP, 0x087) \ _ER(EXIT_ICEBP, 0x088) \ _ER(EXIT_WBINVD, 0x089) \ _ER(EXIT_MONITOR, 0x08a) \ _ER(EXIT_MWAIT, 0x08b) \ _ER(EXIT_MWAIT_COND, 0x08c) \ _ER(EXIT_NPF, 0x400) \ _ER(EXIT_ERR, -1) #define _ER(reason, val) { #reason, val }, struct str_values { const char *str; int val; }; static struct str_values vmx_exit_reasons[] = { VMX_EXIT_REASONS { NULL, -1} }; static struct str_values svm_exit_reasons[] = { SVM_EXIT_REASONS { NULL, -1} }; static struct isa_exit_reasons { unsigned isa; struct str_values *strings; } isa_exit_reasons[] = { { .isa = 1, .strings = vmx_exit_reasons }, { .isa = 2, .strings = svm_exit_reasons }, { } }; static const char *find_exit_reason(unsigned isa, int val) { struct str_values *strings = NULL; int i; for (i = 0; isa_exit_reasons[i].strings; ++i) if (isa_exit_reasons[i].isa == isa) { strings = isa_exit_reasons[i].strings; break; } if (!strings) return "UNKNOWN-ISA"; for (i = 0; strings[i].val >= 0; i++) if (strings[i].val == val) break; return strings[i].str; } static int print_exit_reason(struct trace_seq *s, struct pevent_record *record, struct event_format *event, const char *field) { unsigned long long isa; unsigned long long val; const char *reason; if (pevent_get_field_val(s, event, field, record, &val, 1) < 0) return -1; if (pevent_get_field_val(s, event, "isa", record, &isa, 0) < 0) isa = 1; reason = find_exit_reason(isa, val); if (reason) trace_seq_printf(s, "reason %s", reason); else trace_seq_printf(s, "reason UNKNOWN (%llu)", val); return 0; } static int kvm_exit_handler(struct trace_seq *s, struct pevent_record *record, struct event_format *event, void *context) { unsigned long long info1 = 0, info2 = 0; if (print_exit_reason(s, record, event, "exit_reason") < 0) return -1; pevent_print_num_field(s, " rip 0x%lx", event, "guest_rip", record, 1); if (pevent_get_field_val(s, event, "info1", record, &info1, 0) >= 0 && pevent_get_field_val(s, event, "info2", record, &info2, 0) >= 0) trace_seq_printf(s, " info %llx %llx\n", info1, info2); return 0; } #define KVM_EMUL_INSN_F_CR0_PE (1 << 0) #define KVM_EMUL_INSN_F_EFL_VM (1 << 1) #define KVM_EMUL_INSN_F_CS_D (1 << 2) #define KVM_EMUL_INSN_F_CS_L (1 << 3) static int kvm_emulate_insn_handler(struct trace_seq *s, struct pevent_record *record, struct event_format *event, void *context) { unsigned long long rip, csbase, len, flags, failed; int llen; uint8_t *insn; const char *disasm; if (pevent_get_field_val(s, event, "rip", record, &rip, 1) < 0) return -1; if (pevent_get_field_val(s, event, "csbase", record, &csbase, 1) < 0) return -1; if (pevent_get_field_val(s, event, "len", record, &len, 1) < 0) return -1; if (pevent_get_field_val(s, event, "flags", record, &flags, 1) < 0) return -1; if (pevent_get_field_val(s, event, "failed", record, &failed, 1) < 0) return -1; insn = pevent_get_field_raw(s, event, "insn", record, &llen, 1); if (!insn) return -1; disasm = disassemble(insn, len, rip, flags & KVM_EMUL_INSN_F_CR0_PE, flags & KVM_EMUL_INSN_F_EFL_VM, flags & KVM_EMUL_INSN_F_CS_D, flags & KVM_EMUL_INSN_F_CS_L); trace_seq_printf(s, "%llx:%llx: %s%s", csbase, rip, disasm, failed ? " FAIL" : ""); return 0; } static int kvm_nested_vmexit_inject_handler(struct trace_seq *s, struct pevent_record *record, struct event_format *event, void *context) { if (print_exit_reason(s, record, event, "exit_code") < 0) return -1; pevent_print_num_field(s, " info1 %llx", event, "exit_info1", record, 1); pevent_print_num_field(s, " info2 %llx", event, "exit_info2", record, 1); pevent_print_num_field(s, " int_info %llx", event, "exit_int_info", record, 1); pevent_print_num_field(s, " int_info_err %llx", event, "exit_int_info_err", record, 1); return 0; } static int kvm_nested_vmexit_handler(struct trace_seq *s, struct pevent_record *record, struct event_format *event, void *context) { pevent_print_num_field(s, "rip %lx ", event, "rip", record, 1); return kvm_nested_vmexit_inject_handler(s, record, event, context); } union kvm_mmu_page_role { unsigned word; struct { unsigned glevels:4; unsigned level:4; unsigned quadrant:2; unsigned pad_for_nice_hex_output:6; unsigned direct:1; unsigned access:3; unsigned invalid:1; unsigned cr4_pge:1; unsigned nxe:1; }; }; static int kvm_mmu_print_role(struct trace_seq *s, struct pevent_record *record, struct event_format *event, void *context) { unsigned long long val; static const char *access_str[] = { "---", "--x", "w--", "w-x", "-u-", "-ux", "wu-", "wux" }; union kvm_mmu_page_role role; if (pevent_get_field_val(s, event, "role", record, &val, 1) < 0) return -1; role.word = (int)val; /* * We can only use the structure if file is of the same * endianess. */ if (pevent_is_file_bigendian(event->pevent) == pevent_is_host_bigendian(event->pevent)) { trace_seq_printf(s, "%u/%u q%u%s %s%s %spge %snxe", role.level, role.glevels, role.quadrant, role.direct ? " direct" : "", access_str[role.access], role.invalid ? " invalid" : "", role.cr4_pge ? "" : "!", role.nxe ? "" : "!"); } else trace_seq_printf(s, "WORD: %08x", role.word); pevent_print_num_field(s, " root %u ", event, "root_count", record, 1); if (pevent_get_field_val(s, event, "unsync", record, &val, 1) < 0) return -1; trace_seq_printf(s, "%s%c", val ? "unsync" : "sync", 0); return 0; } static int kvm_mmu_get_page_handler(struct trace_seq *s, struct pevent_record *record, struct event_format *event, void *context) { unsigned long long val; if (pevent_get_field_val(s, event, "created", record, &val, 1) < 0) return -1; trace_seq_printf(s, "%s ", val ? "new" : "existing"); if (pevent_get_field_val(s, event, "gfn", record, &val, 1) < 0) return -1; trace_seq_printf(s, "sp gfn %llx ", val); return kvm_mmu_print_role(s, record, event, context); } #define PT_WRITABLE_SHIFT 1 #define PT_WRITABLE_MASK (1ULL << PT_WRITABLE_SHIFT) static unsigned long long process_is_writable_pte(struct trace_seq *s, unsigned long long *args) { unsigned long pte = args[0]; return pte & PT_WRITABLE_MASK; } int PEVENT_PLUGIN_LOADER(struct pevent *pevent) { init_disassembler(); pevent_register_event_handler(pevent, -1, "kvm", "kvm_exit", kvm_exit_handler, NULL); pevent_register_event_handler(pevent, -1, "kvm", "kvm_emulate_insn", kvm_emulate_insn_handler, NULL); pevent_register_event_handler(pevent, -1, "kvm", "kvm_nested_vmexit", kvm_nested_vmexit_handler, NULL); pevent_register_event_handler(pevent, -1, "kvm", "kvm_nested_vmexit_inject", kvm_nested_vmexit_inject_handler, NULL); pevent_register_event_handler(pevent, -1, "kvmmmu", "kvm_mmu_get_page", kvm_mmu_get_page_handler, NULL); pevent_register_event_handler(pevent, -1, "kvmmmu", "kvm_mmu_sync_page", kvm_mmu_print_role, NULL); pevent_register_event_handler(pevent, -1, "kvmmmu", "kvm_mmu_unsync_page", kvm_mmu_print_role, NULL); pevent_register_event_handler(pevent, -1, "kvmmmu", "kvm_mmu_zap_page", kvm_mmu_print_role, NULL); pevent_register_event_handler(pevent, -1, "kvmmmu", "kvm_mmu_prepare_zap_page", kvm_mmu_print_role, NULL); pevent_register_print_function(pevent, process_is_writable_pte, PEVENT_FUNC_ARG_INT, "is_writable_pte", PEVENT_FUNC_ARG_LONG, PEVENT_FUNC_ARG_VOID); return 0; } void PEVENT_PLUGIN_UNLOADER(struct pevent *pevent) { pevent_unregister_event_handler(pevent, -1, "kvm", "kvm_exit", kvm_exit_handler, NULL); pevent_unregister_event_handler(pevent, -1, "kvm", "kvm_emulate_insn", kvm_emulate_insn_handler, NULL); pevent_unregister_event_handler(pevent, -1, "kvm", "kvm_nested_vmexit", kvm_nested_vmexit_handler, NULL); pevent_unregister_event_handler(pevent, -1, "kvm", "kvm_nested_vmexit_inject", kvm_nested_vmexit_inject_handler, NULL); pevent_unregister_event_handler(pevent, -1, "kvmmmu", "kvm_mmu_get_page", kvm_mmu_get_page_handler, NULL); pevent_unregister_event_handler(pevent, -1, "kvmmmu", "kvm_mmu_sync_page", kvm_mmu_print_role, NULL); pevent_unregister_event_handler(pevent, -1, "kvmmmu", "kvm_mmu_unsync_page", kvm_mmu_print_role, NULL); pevent_unregister_event_handler(pevent, -1, "kvmmmu", "kvm_mmu_zap_page", kvm_mmu_print_role, NULL); pevent_unregister_event_handler(pevent, -1, "kvmmmu", "kvm_mmu_prepare_zap_page", kvm_mmu_print_role, NULL); pevent_unregister_print_function(pevent, process_is_writable_pte, "is_writable_pte"); } trace-cmd-2.5.3/plugin_mac80211.c000066400000000000000000000120221246701203100162270ustar00rootroot00000000000000/* * Copyright (C) 2009 Johannes Berg * * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ * This program is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; * version 2.1 of the License (not later!) * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this program; if not, see * * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ */ #include #include #include #include "event-parse.h" #define INDENT 65 static void print_string(struct trace_seq *s, struct event_format *event, const char *name, const void *data) { struct format_field *f = pevent_find_field(event, name); int offset; int length; if (!f) { trace_seq_printf(s, "NOTFOUND:%s", name); return; } offset = f->offset; length = f->size; if (!strncmp(f->type, "__data_loc", 10)) { unsigned long long v; if (pevent_read_number_field(f, data, &v)) { trace_seq_printf(s, "invalid_data_loc"); return; } offset = v & 0xffff; length = v >> 16; } trace_seq_printf(s, "%.*s", length, (char *)data + offset); } struct value_name { unsigned long long value; const char *name; }; static void _print_enum(struct trace_seq *s, struct event_format *event, const char *name, const void *data, const struct value_name *names, int n_names) { struct format_field *f = pevent_find_field(event, name); unsigned long long val; int i; if (!f) { trace_seq_puts(s, "field-not-found"); return; } if (pevent_read_number_field(f, data, &val)) { trace_seq_puts(s, "field-invalid"); return; } for (i = 0; i < n_names; i++) { if (names[i].value == val) { trace_seq_puts(s, names[i].name); return; } } trace_seq_printf(s, "%llu", val); } #define print_enum(s, ev, name, data, enums...) \ ({ static const struct value_name __n[] = { enums }; \ _print_enum(s, ev, name, data, __n, sizeof(__n)/sizeof(__n[0])); \ }) static void _print_flag(struct trace_seq *s, struct event_format *event, const char *name, const void *data, const struct value_name *names, int n_names) { struct format_field *f = pevent_find_field(event, name); unsigned long long val; int i, j, found, first = 1; if (!f) { trace_seq_puts(s, "field-not-found"); return; } if (pevent_read_number_field(f, data, &val)) { trace_seq_puts(s, "field-invalid"); return; } for (i = 0; i < 64; i++) { if (!(val & (1ULL<data; print_string(s, event, "wiphy_name", data); trace_seq_printf(s, " vif:"); print_string(s, event, "vif_name", data); pevent_print_num_field(s, "(%d)", event, "vif_type", record, 1); trace_seq_printf(s, "\n%*s", INDENT, ""); SF("assoc"); SP(); SF("aid"); SP(); SF("cts"); SP(); SF("shortpre"); SP(); SF("shortslot"); SP(); SF("dtimper"); SP(); trace_seq_printf(s, "\n%*s", INDENT, ""); SF("bcnint"); SP(); SFX("assoc_cap"); SP(); SFX("basic_rates"); SP(); SF("enable_beacon"); trace_seq_printf(s, "\n%*s", INDENT, ""); SF("ht_operation_mode"); return 0; } static int drv_config(struct trace_seq *s, struct pevent_record *record, struct event_format *event, void *context) { void *data = record->data; print_string(s, event, "wiphy_name", data); trace_seq_putc(s, ' '); print_flag(s, event, "flags", data, { 0, "MONITOR" }, { 1, "PS" }, { 2, "IDLE" }, { 3, "QOS"}, ); pevent_print_num_field(s, " chan:%d/", event, "center_freq", record, 1); print_enum(s, event, "channel_type", data, { 0, "noht" }, { 1, "ht20" }, { 2, "ht40-" }, { 3, "ht40+" }); trace_seq_putc(s, ' '); SF("power_level"); return 0; } int PEVENT_PLUGIN_LOADER(struct pevent *pevent) { pevent_register_event_handler(pevent, -1, "mac80211", "drv_bss_info_changed", drv_bss_info_changed, NULL); pevent_register_event_handler(pevent, -1, "mac80211", "drv_config", drv_config, NULL); return 0; } trace-cmd-2.5.3/plugin_python.c000066400000000000000000000040541246701203100164220ustar00rootroot00000000000000#include #include #include "trace-cmd.h" #ifndef PYTHON_DIR #define PYTHON_DIR "." #endif static const char pypath[] = "import sys\n" "sys.path.append(\"" PYTHON_DIR "\")\n"; static const char pyload[] = "import imp, tracecmd, ctracecmd\n" "fn = r'%s'\n" "file = open(fn, 'r')\n" "try:\n" " module = imp.load_source('%s', fn, file)\n" " module.register(tracecmd.PEvent(ctracecmd.convert_pevent(pevent)))\n" "finally:\n" " file.close()\n"; static void load_plugin(struct pevent *pevent, const char *path, const char *name, void *data) { PyObject *globals = data; int len = strlen(path) + strlen(name) + 2; int nlen = strlen(name) + 1; char *full = malloc(len); char *n = malloc(nlen); char *load; PyObject *res; if (!full || !n) return; strcpy(full, path); strcat(full, "/"); strcat(full, name); strcpy(n, name); n[nlen - 4] = '\0'; asprintf(&load, pyload, full, n); if (!load) return; res = PyRun_String(load, Py_file_input, globals, globals); if (!res) { fprintf(stderr, "failed loading %s\n", full); PyErr_Print(); } else Py_DECREF(res); free(load); } int PEVENT_PLUGIN_LOADER(struct pevent *pevent) { PyObject *globals, *m, *py_pevent, *str, *res; char **plugin_list; /* Only load plugins if they exist */ plugin_list = trace_util_find_plugin_files(".py"); if (!plugin_list) return 0; trace_util_free_plugin_files(plugin_list); Py_Initialize(); m = PyImport_AddModule("__main__"); globals = PyModule_GetDict(m); res = PyRun_String(pypath, Py_file_input, globals, globals); if (!res) { PyErr_Print(); return -1; } else Py_DECREF(res); str = PyString_FromString("pevent"); if (!str) return -ENOMEM; py_pevent = PyLong_FromUnsignedLong((unsigned long)pevent); if (!py_pevent) return -ENOMEM; if (PyDict_SetItem(globals, str, py_pevent)) fprintf(stderr, "failed to insert pevent\n"); Py_DECREF(py_pevent); Py_DECREF(str); trace_util_load_plugins(pevent, ".py", load_plugin, globals); return 0; } int PEVENT_PLUGIN_UNLOADER(struct pevent *pevent) { Py_Finalize(); return 0; } trace-cmd-2.5.3/plugin_sched_switch.c000066400000000000000000000105611246701203100175500ustar00rootroot00000000000000/* * Copyright (C) 2009, 2010 Red Hat Inc, Steven Rostedt * * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ * This program is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; * version 2.1 of the License (not later!) * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this program; if not, see * * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ */ #include #include #include #include "trace-cmd.h" static void write_state(struct trace_seq *s, int val) { const char states[] = "SDTtZXxW"; int found = 0; int i; for (i=0; i < (sizeof(states) - 1); i++) { if (!(val & (1 << i))) continue; if (found) trace_seq_putc(s, '|'); found = 1; trace_seq_putc(s, states[i]); } if (!found) trace_seq_putc(s, 'R'); } static void write_and_save_comm(struct format_field *field, struct pevent_record *record, struct trace_seq *s, int pid) { const char *comm; int len; comm = (char *)(record->data + field->offset); len = s->len; trace_seq_printf(s, "%.*s", field->size, comm); /* make sure the comm has a \0 at the end. */ trace_seq_terminate(s); comm = &s->buffer[len]; /* Help out the comm to ids. This will handle dups */ pevent_register_comm(field->event->pevent, comm, pid); } static int sched_wakeup_handler(struct trace_seq *s, struct pevent_record *record, struct event_format *event, void *context) { struct format_field *field; unsigned long long val; if (pevent_get_field_val(s, event, "pid", record, &val, 1)) return trace_seq_putc(s, '!'); field = pevent_find_any_field(event, "comm"); if (field) { write_and_save_comm(field, record, s, val); trace_seq_putc(s, ':'); } trace_seq_printf(s, "%lld", val); if (pevent_get_field_val(s, event, "prio", record, &val, 0) == 0) trace_seq_printf(s, " [%lld]", val); if (pevent_get_field_val(s, event, "success", record, &val, 1) == 0) trace_seq_printf(s, " success=%lld", val); if (pevent_get_field_val(s, event, "target_cpu", record, &val, 0) == 0) trace_seq_printf(s, " CPU:%03llu", val); return 0; } static int sched_switch_handler(struct trace_seq *s, struct pevent_record *record, struct event_format *event, void *context) { struct format_field *field; unsigned long long val; if (pevent_get_field_val(s, event, "prev_pid", record, &val, 1)) return trace_seq_putc(s, '!'); field = pevent_find_any_field(event, "prev_comm"); if (field) { write_and_save_comm(field, record, s, val); trace_seq_putc(s, ':'); } trace_seq_printf(s, "%lld ", val); if (pevent_get_field_val(s, event, "prev_prio", record, &val, 0) == 0) trace_seq_printf(s, "[%lld] ", val); if (pevent_get_field_val(s, event, "prev_state", record, &val, 0) == 0) write_state(s, val); trace_seq_puts(s, " ==> "); if (pevent_get_field_val(s, event, "next_pid", record, &val, 1)) return trace_seq_putc(s, '!'); field = pevent_find_any_field(event, "next_comm"); if (field) { write_and_save_comm(field, record, s, val); trace_seq_putc(s, ':'); } trace_seq_printf(s, "%lld", val); if (pevent_get_field_val(s, event, "next_prio", record, &val, 0) == 0) trace_seq_printf(s, " [%lld]", val); return 0; } int PEVENT_PLUGIN_LOADER(struct pevent *pevent) { pevent_register_event_handler(pevent, -1, "sched", "sched_switch", sched_switch_handler, NULL); pevent_register_event_handler(pevent, -1, "sched", "sched_wakeup", sched_wakeup_handler, NULL); pevent_register_event_handler(pevent, -1, "sched", "sched_wakeup_new", sched_wakeup_handler, NULL); return 0; } void PEVENT_PLUGIN_UNLOADER(struct pevent *pevent) { pevent_unregister_event_handler(pevent, -1, "sched", "sched_switch", sched_switch_handler, NULL); pevent_unregister_event_handler(pevent, -1, "sched", "sched_wakeup", sched_wakeup_handler, NULL); pevent_unregister_event_handler(pevent, -1, "sched", "sched_wakeup_new", sched_wakeup_handler, NULL); } trace-cmd-2.5.3/plugin_scsi.c000066400000000000000000000247661246701203100160560ustar00rootroot00000000000000#include #include #include #include "event-parse.h" typedef unsigned long sector_t; typedef uint64_t u64; typedef unsigned int u32; /* * SCSI opcodes */ #define TEST_UNIT_READY 0x00 #define REZERO_UNIT 0x01 #define REQUEST_SENSE 0x03 #define FORMAT_UNIT 0x04 #define READ_BLOCK_LIMITS 0x05 #define REASSIGN_BLOCKS 0x07 #define INITIALIZE_ELEMENT_STATUS 0x07 #define READ_6 0x08 #define WRITE_6 0x0a #define SEEK_6 0x0b #define READ_REVERSE 0x0f #define WRITE_FILEMARKS 0x10 #define SPACE 0x11 #define INQUIRY 0x12 #define RECOVER_BUFFERED_DATA 0x14 #define MODE_SELECT 0x15 #define RESERVE 0x16 #define RELEASE 0x17 #define COPY 0x18 #define ERASE 0x19 #define MODE_SENSE 0x1a #define START_STOP 0x1b #define RECEIVE_DIAGNOSTIC 0x1c #define SEND_DIAGNOSTIC 0x1d #define ALLOW_MEDIUM_REMOVAL 0x1e #define READ_FORMAT_CAPACITIES 0x23 #define SET_WINDOW 0x24 #define READ_CAPACITY 0x25 #define READ_10 0x28 #define WRITE_10 0x2a #define SEEK_10 0x2b #define POSITION_TO_ELEMENT 0x2b #define WRITE_VERIFY 0x2e #define VERIFY 0x2f #define SEARCH_HIGH 0x30 #define SEARCH_EQUAL 0x31 #define SEARCH_LOW 0x32 #define SET_LIMITS 0x33 #define PRE_FETCH 0x34 #define READ_POSITION 0x34 #define SYNCHRONIZE_CACHE 0x35 #define LOCK_UNLOCK_CACHE 0x36 #define READ_DEFECT_DATA 0x37 #define MEDIUM_SCAN 0x38 #define COMPARE 0x39 #define COPY_VERIFY 0x3a #define WRITE_BUFFER 0x3b #define READ_BUFFER 0x3c #define UPDATE_BLOCK 0x3d #define READ_LONG 0x3e #define WRITE_LONG 0x3f #define CHANGE_DEFINITION 0x40 #define WRITE_SAME 0x41 #define UNMAP 0x42 #define READ_TOC 0x43 #define READ_HEADER 0x44 #define GET_EVENT_STATUS_NOTIFICATION 0x4a #define LOG_SELECT 0x4c #define LOG_SENSE 0x4d #define XDWRITEREAD_10 0x53 #define MODE_SELECT_10 0x55 #define RESERVE_10 0x56 #define RELEASE_10 0x57 #define MODE_SENSE_10 0x5a #define PERSISTENT_RESERVE_IN 0x5e #define PERSISTENT_RESERVE_OUT 0x5f #define VARIABLE_LENGTH_CMD 0x7f #define REPORT_LUNS 0xa0 #define SECURITY_PROTOCOL_IN 0xa2 #define MAINTENANCE_IN 0xa3 #define MAINTENANCE_OUT 0xa4 #define MOVE_MEDIUM 0xa5 #define EXCHANGE_MEDIUM 0xa6 #define READ_12 0xa8 #define WRITE_12 0xaa #define READ_MEDIA_SERIAL_NUMBER 0xab #define WRITE_VERIFY_12 0xae #define VERIFY_12 0xaf #define SEARCH_HIGH_12 0xb0 #define SEARCH_EQUAL_12 0xb1 #define SEARCH_LOW_12 0xb2 #define SECURITY_PROTOCOL_OUT 0xb5 #define READ_ELEMENT_STATUS 0xb8 #define SEND_VOLUME_TAG 0xb6 #define WRITE_LONG_2 0xea #define EXTENDED_COPY 0x83 #define RECEIVE_COPY_RESULTS 0x84 #define ACCESS_CONTROL_IN 0x86 #define ACCESS_CONTROL_OUT 0x87 #define READ_16 0x88 #define WRITE_16 0x8a #define READ_ATTRIBUTE 0x8c #define WRITE_ATTRIBUTE 0x8d #define VERIFY_16 0x8f #define SYNCHRONIZE_CACHE_16 0x91 #define WRITE_SAME_16 0x93 #define SERVICE_ACTION_IN 0x9e /* values for service action in */ #define SAI_READ_CAPACITY_16 0x10 #define SAI_GET_LBA_STATUS 0x12 /* values for VARIABLE_LENGTH_CMD service action codes * see spc4r17 Section D.3.5, table D.7 and D.8 */ #define VLC_SA_RECEIVE_CREDENTIAL 0x1800 /* values for maintenance in */ #define MI_REPORT_IDENTIFYING_INFORMATION 0x05 #define MI_REPORT_TARGET_PGS 0x0a #define MI_REPORT_ALIASES 0x0b #define MI_REPORT_SUPPORTED_OPERATION_CODES 0x0c #define MI_REPORT_SUPPORTED_TASK_MANAGEMENT_FUNCTIONS 0x0d #define MI_REPORT_PRIORITY 0x0e #define MI_REPORT_TIMESTAMP 0x0f #define MI_MANAGEMENT_PROTOCOL_IN 0x10 /* value for MI_REPORT_TARGET_PGS ext header */ #define MI_EXT_HDR_PARAM_FMT 0x20 /* values for maintenance out */ #define MO_SET_IDENTIFYING_INFORMATION 0x06 #define MO_SET_TARGET_PGS 0x0a #define MO_CHANGE_ALIASES 0x0b #define MO_SET_PRIORITY 0x0e #define MO_SET_TIMESTAMP 0x0f #define MO_MANAGEMENT_PROTOCOL_OUT 0x10 /* values for variable length command */ #define XDREAD_32 0x03 #define XDWRITE_32 0x04 #define XPWRITE_32 0x06 #define XDWRITEREAD_32 0x07 #define READ_32 0x09 #define VERIFY_32 0x0a #define WRITE_32 0x0b #define WRITE_SAME_32 0x0d #define SERVICE_ACTION16(cdb) (cdb[1] & 0x1f) #define SERVICE_ACTION32(cdb) ((cdb[8] << 8) | cdb[9]) static const char * scsi_trace_misc(struct trace_seq *, unsigned char *, int); static const char * scsi_trace_rw6(struct trace_seq *p, unsigned char *cdb, int len) { const char *ret = p->buffer + p->len; sector_t lba = 0, txlen = 0; lba |= ((cdb[1] & 0x1F) << 16); lba |= (cdb[2] << 8); lba |= cdb[3]; txlen = cdb[4]; trace_seq_printf(p, "lba=%llu txlen=%llu", (unsigned long long)lba, (unsigned long long)txlen); trace_seq_putc(p, 0); return ret; } static const char * scsi_trace_rw10(struct trace_seq *p, unsigned char *cdb, int len) { const char *ret = p->buffer + p->len; sector_t lba = 0, txlen = 0; lba |= (cdb[2] << 24); lba |= (cdb[3] << 16); lba |= (cdb[4] << 8); lba |= cdb[5]; txlen |= (cdb[7] << 8); txlen |= cdb[8]; trace_seq_printf(p, "lba=%llu txlen=%llu protect=%u", (unsigned long long)lba, (unsigned long long)txlen, cdb[1] >> 5); if (cdb[0] == WRITE_SAME) trace_seq_printf(p, " unmap=%u", cdb[1] >> 3 & 1); trace_seq_putc(p, 0); return ret; } static const char * scsi_trace_rw12(struct trace_seq *p, unsigned char *cdb, int len) { const char *ret = p->buffer + p->len; sector_t lba = 0, txlen = 0; lba |= (cdb[2] << 24); lba |= (cdb[3] << 16); lba |= (cdb[4] << 8); lba |= cdb[5]; txlen |= (cdb[6] << 24); txlen |= (cdb[7] << 16); txlen |= (cdb[8] << 8); txlen |= cdb[9]; trace_seq_printf(p, "lba=%llu txlen=%llu protect=%u", (unsigned long long)lba, (unsigned long long)txlen, cdb[1] >> 5); trace_seq_putc(p, 0); return ret; } static const char * scsi_trace_rw16(struct trace_seq *p, unsigned char *cdb, int len) { const char *ret = p->buffer + p->len; sector_t lba = 0, txlen = 0; lba |= ((u64)cdb[2] << 56); lba |= ((u64)cdb[3] << 48); lba |= ((u64)cdb[4] << 40); lba |= ((u64)cdb[5] << 32); lba |= (cdb[6] << 24); lba |= (cdb[7] << 16); lba |= (cdb[8] << 8); lba |= cdb[9]; txlen |= (cdb[10] << 24); txlen |= (cdb[11] << 16); txlen |= (cdb[12] << 8); txlen |= cdb[13]; trace_seq_printf(p, "lba=%llu txlen=%llu protect=%u", (unsigned long long)lba, (unsigned long long)txlen, cdb[1] >> 5); if (cdb[0] == WRITE_SAME_16) trace_seq_printf(p, " unmap=%u", cdb[1] >> 3 & 1); trace_seq_putc(p, 0); return ret; } static const char * scsi_trace_rw32(struct trace_seq *p, unsigned char *cdb, int len) { const char *ret = p->buffer + p->len, *cmd; sector_t lba = 0, txlen = 0; u32 ei_lbrt = 0; switch (SERVICE_ACTION32(cdb)) { case READ_32: cmd = "READ"; break; case VERIFY_32: cmd = "VERIFY"; break; case WRITE_32: cmd = "WRITE"; break; case WRITE_SAME_32: cmd = "WRITE_SAME"; break; default: trace_seq_printf(p, "UNKNOWN"); goto out; } lba |= ((u64)cdb[12] << 56); lba |= ((u64)cdb[13] << 48); lba |= ((u64)cdb[14] << 40); lba |= ((u64)cdb[15] << 32); lba |= (cdb[16] << 24); lba |= (cdb[17] << 16); lba |= (cdb[18] << 8); lba |= cdb[19]; ei_lbrt |= (cdb[20] << 24); ei_lbrt |= (cdb[21] << 16); ei_lbrt |= (cdb[22] << 8); ei_lbrt |= cdb[23]; txlen |= (cdb[28] << 24); txlen |= (cdb[29] << 16); txlen |= (cdb[30] << 8); txlen |= cdb[31]; trace_seq_printf(p, "%s_32 lba=%llu txlen=%llu protect=%u ei_lbrt=%u", cmd, (unsigned long long)lba, (unsigned long long)txlen, cdb[10] >> 5, ei_lbrt); if (SERVICE_ACTION32(cdb) == WRITE_SAME_32) trace_seq_printf(p, " unmap=%u", cdb[10] >> 3 & 1); out: trace_seq_putc(p, 0); return ret; } static const char * scsi_trace_unmap(struct trace_seq *p, unsigned char *cdb, int len) { const char *ret = p->buffer + p->len; unsigned int regions = cdb[7] << 8 | cdb[8]; trace_seq_printf(p, "regions=%u", (regions - 8) / 16); trace_seq_putc(p, 0); return ret; } static const char * scsi_trace_service_action_in(struct trace_seq *p, unsigned char *cdb, int len) { const char *ret = p->buffer + p->len, *cmd; sector_t lba = 0; u32 alloc_len = 0; switch (SERVICE_ACTION16(cdb)) { case SAI_READ_CAPACITY_16: cmd = "READ_CAPACITY_16"; break; case SAI_GET_LBA_STATUS: cmd = "GET_LBA_STATUS"; break; default: trace_seq_printf(p, "UNKNOWN"); goto out; } lba |= ((u64)cdb[2] << 56); lba |= ((u64)cdb[3] << 48); lba |= ((u64)cdb[4] << 40); lba |= ((u64)cdb[5] << 32); lba |= (cdb[6] << 24); lba |= (cdb[7] << 16); lba |= (cdb[8] << 8); lba |= cdb[9]; alloc_len |= (cdb[10] << 24); alloc_len |= (cdb[11] << 16); alloc_len |= (cdb[12] << 8); alloc_len |= cdb[13]; trace_seq_printf(p, "%s lba=%llu alloc_len=%u", cmd, (unsigned long long)lba, alloc_len); out: trace_seq_putc(p, 0); return ret; } static const char * scsi_trace_varlen(struct trace_seq *p, unsigned char *cdb, int len) { switch (SERVICE_ACTION32(cdb)) { case READ_32: case VERIFY_32: case WRITE_32: case WRITE_SAME_32: return scsi_trace_rw32(p, cdb, len); default: return scsi_trace_misc(p, cdb, len); } } static const char * scsi_trace_misc(struct trace_seq *p, unsigned char *cdb, int len) { const char *ret = p->buffer + p->len; trace_seq_printf(p, "-"); trace_seq_putc(p, 0); return ret; } const char * scsi_trace_parse_cdb(struct trace_seq *p, unsigned char *cdb, int len) { switch (cdb[0]) { case READ_6: case WRITE_6: return scsi_trace_rw6(p, cdb, len); case READ_10: case VERIFY: case WRITE_10: case WRITE_SAME: return scsi_trace_rw10(p, cdb, len); case READ_12: case VERIFY_12: case WRITE_12: return scsi_trace_rw12(p, cdb, len); case READ_16: case VERIFY_16: case WRITE_16: case WRITE_SAME_16: return scsi_trace_rw16(p, cdb, len); case UNMAP: return scsi_trace_unmap(p, cdb, len); case SERVICE_ACTION_IN: return scsi_trace_service_action_in(p, cdb, len); case VARIABLE_LENGTH_CMD: return scsi_trace_varlen(p, cdb, len); default: return scsi_trace_misc(p, cdb, len); } } unsigned long long process_scsi_trace_parse_cdb(struct trace_seq *s, unsigned long long *args) { scsi_trace_parse_cdb(s, (unsigned char *) (unsigned long) args[1], args[2]); return 0; } int PEVENT_PLUGIN_LOADER(struct pevent *pevent) { pevent_register_print_function(pevent, process_scsi_trace_parse_cdb, PEVENT_FUNC_ARG_STRING, "scsi_trace_parse_cdb", PEVENT_FUNC_ARG_PTR, PEVENT_FUNC_ARG_PTR, PEVENT_FUNC_ARG_INT, PEVENT_FUNC_ARG_VOID); return 0; } void PEVENT_PLUGIN_UNLOADER(struct pevent *pevent) { pevent_unregister_print_function(pevent, process_scsi_trace_parse_cdb, "scsi_trace_parse_cdb"); } trace-cmd-2.5.3/plugin_xen.c000066400000000000000000000067151246701203100157010ustar00rootroot00000000000000#include #include #include #include "event-parse.h" #define __HYPERVISOR_set_trap_table 0 #define __HYPERVISOR_mmu_update 1 #define __HYPERVISOR_set_gdt 2 #define __HYPERVISOR_stack_switch 3 #define __HYPERVISOR_set_callbacks 4 #define __HYPERVISOR_fpu_taskswitch 5 #define __HYPERVISOR_sched_op_compat 6 #define __HYPERVISOR_dom0_op 7 #define __HYPERVISOR_set_debugreg 8 #define __HYPERVISOR_get_debugreg 9 #define __HYPERVISOR_update_descriptor 10 #define __HYPERVISOR_memory_op 12 #define __HYPERVISOR_multicall 13 #define __HYPERVISOR_update_va_mapping 14 #define __HYPERVISOR_set_timer_op 15 #define __HYPERVISOR_event_channel_op_compat 16 #define __HYPERVISOR_xen_version 17 #define __HYPERVISOR_console_io 18 #define __HYPERVISOR_physdev_op_compat 19 #define __HYPERVISOR_grant_table_op 20 #define __HYPERVISOR_vm_assist 21 #define __HYPERVISOR_update_va_mapping_otherdomain 22 #define __HYPERVISOR_iret 23 /* x86 only */ #define __HYPERVISOR_vcpu_op 24 #define __HYPERVISOR_set_segment_base 25 /* x86/64 only */ #define __HYPERVISOR_mmuext_op 26 #define __HYPERVISOR_acm_op 27 #define __HYPERVISOR_nmi_op 28 #define __HYPERVISOR_sched_op 29 #define __HYPERVISOR_callback_op 30 #define __HYPERVISOR_xenoprof_op 31 #define __HYPERVISOR_event_channel_op 32 #define __HYPERVISOR_physdev_op 33 #define __HYPERVISOR_hvm_op 34 #define __HYPERVISOR_tmem_op 38 /* Architecture-specific hypercall definitions. */ #define __HYPERVISOR_arch_0 48 #define __HYPERVISOR_arch_1 49 #define __HYPERVISOR_arch_2 50 #define __HYPERVISOR_arch_3 51 #define __HYPERVISOR_arch_4 52 #define __HYPERVISOR_arch_5 53 #define __HYPERVISOR_arch_6 54 #define __HYPERVISOR_arch_7 55 #define N(x) [__HYPERVISOR_##x] = "("#x")" static const char *xen_hypercall_names[] = { N(set_trap_table), N(mmu_update), N(set_gdt), N(stack_switch), N(set_callbacks), N(fpu_taskswitch), N(sched_op_compat), N(dom0_op), N(set_debugreg), N(get_debugreg), N(update_descriptor), N(memory_op), N(multicall), N(update_va_mapping), N(set_timer_op), N(event_channel_op_compat), N(xen_version), N(console_io), N(physdev_op_compat), N(grant_table_op), N(vm_assist), N(update_va_mapping_otherdomain), N(iret), N(vcpu_op), N(set_segment_base), N(mmuext_op), N(acm_op), N(nmi_op), N(sched_op), N(callback_op), N(xenoprof_op), N(event_channel_op), N(physdev_op), N(hvm_op), /* Architecture-specific hypercall definitions. */ N(arch_0), N(arch_1), N(arch_2), N(arch_3), N(arch_4), N(arch_5), N(arch_6), N(arch_7), }; #undef N #define ARRAY_SIZE(arr) (sizeof(arr) / sizeof((arr)[0])) static const char *xen_hypercall_name(unsigned op) { if (op < ARRAY_SIZE(xen_hypercall_names) && xen_hypercall_names[op] != NULL) return xen_hypercall_names[op]; return ""; } unsigned long long process_xen_hypercall_name(struct trace_seq *s, unsigned long long *args) { unsigned int op = args[0]; trace_seq_printf(s, "%s", xen_hypercall_name(op)); return 0; } int PEVENT_PLUGIN_LOADER(struct pevent *pevent) { pevent_register_print_function(pevent, process_xen_hypercall_name, PEVENT_FUNC_ARG_STRING, "xen_hypercall_name", PEVENT_FUNC_ARG_INT, PEVENT_FUNC_ARG_VOID); return 0; } void PEVENT_PLUGIN_UNLOADER(struct pevent *pevent) { pevent_unregister_print_function(pevent, process_xen_hypercall_name, "xen_hypercall_name"); } trace-cmd-2.5.3/trace-blk-hack.c000066400000000000000000000115061246701203100162730ustar00rootroot00000000000000/* * Copyright (C) 2009 Red Hat Inc, Steven Rostedt * * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ * This program is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; * version 2.1 of the License (not later!) * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this program; if not, see * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA * * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ */ #include #include "trace-cmd.h" #include "trace-local.h" static const char blk_event_start[] = "name: blktrace\n" "ID: %d\n" "format:\n" "\tfield:unsigned short common_type;\toffset:0;\tsize:2;\n" "\tfield:unsigned char common_flags;\toffset:2;\tsize:1;\n" "\tfield:unsigned char common_preempt_count;\toffset:3;\tsize:1;\n" "\tfield:int common_pid;\toffset:4;\tsize:4;\n"; static const char blk_body[] = "\n" "\tfield:u64 sector;\toffset:16;\tsize:8;\n" "\tfield:int bytes;\toffset:24;\tsize:4;\n" "\tfield:int action;\toffset:28;\tsize:4;\n" "\tfield:int pid;\toffset:32;\tsize:4;\n" "\tfield:int device;\toffset:36;\tsize:4;\n" "\tfield:int cpu;\toffset:40;\tsize:4;\n" "\tfield:short error;\toffset:44;\tsize:2;\n" "\tfield:short pdu_len;\toffset:46;\tsize:2;\n" "\tfield:void data;\toffset:48;\tsize:0;\n" "\n" "print fmt: \"%%d\", REC->pid\n"; int tracecmd_blk_hack(struct tracecmd_input *handle) { struct pevent *pevent; struct event_format *event; struct format_field *field; char buf[4096]; /* way more than enough! */ int id; int l; int r; pevent = tracecmd_get_pevent(handle); /* * Unfortunately, the TRACE_BLK has changed a bit. * We need to test if various events exist to try * to guess what event id TRACE_BLK would be. */ /* It was originally behind the "power" event */ event = pevent_find_event_by_name(pevent, "ftrace", "power"); if (event) { id = event->id + 1; goto found; } /* * But the power tracer is now in perf. * Then it was after kmem_free */ event = pevent_find_event_by_name(pevent, "ftrace", "kmem_free"); if (event) { id = event->id + 1; goto found; } /* * But that then went away. * Currently it should be behind the user stack. */ event = pevent_find_event_by_name(pevent, "ftrace", "user_stack"); if (event) { id = event->id + 1; goto found; } /* Give up :( */ return -1; found: /* * Blk events are not exported in the events directory. * This is a hack to attempt to create a block event * that we can read. * * We'll make a format file to look like this: * * name: blktrace * ID: 13 * format: * field:unsigned short common_type; offset:0; size:2; * field:unsigned char common_flags; offset:2; size:1; * field:unsigned char common_preempt_count; offset:3; size:1; * field:int common_pid; offset:4; size:4; * field:int common_lock_depth; offset:8; size:4; * * field:u64 sector; offset:16; size:8; * field:int bytes; offset:32; size:4; * field:int action; offset:36; size:4; * field:int pid; offset:40; size:4; * field:int device; offset:44; size:4; * field:int cpu; offset:48; size:4; * field:short error; offset:52; size:2; * field:short pdu_len; offset:54; size:2; * field:void data; offset:60; size:0; * * print fmt: "%d", REC->pid * * Note: the struct blk_io_trace is used directly and * just the first parts of the struct are not used in order * to not write over the ftrace data. */ /* Make sure the common fields exist */ field = pevent_find_common_field(event, "common_type"); if (!field || field->offset != 0 || field->size != 2) goto fail; field = pevent_find_common_field(event, "common_flags"); if (!field || field->offset != 2 || field->size != 1) goto fail; field = pevent_find_common_field(event, "common_preempt_count"); if (!field || field->offset != 3 || field->size != 1) goto fail; field = pevent_find_common_field(event, "common_pid"); if (!field || field->offset != 4 || field->size != 4) goto fail; r = sprintf(buf, blk_event_start, id); l = r; /* lock depth is optional */ field = pevent_find_common_field(event, "common_lock_depth"); if (field) { if (field->offset != 8 || field->size != 4) return -1; r = sprintf(buf+l, "\tfield:int common_lock_depth;\toffset:8;\tsize:4;\n"); l += r; } r = sprintf(buf+l, blk_body); /* Parse this event */ l += r; pevent_parse_event(pevent, buf, l, "ftrace"); return 0; fail: return -1; } trace-cmd-2.5.3/trace-capture.c000066400000000000000000001074471246701203100162740ustar00rootroot00000000000000/* * Copyright (C) 2009, 2010 Red Hat Inc, Steven Rostedt * * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; version 2 of the License (not later!) * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; if not, see * * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ */ #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include "trace-cmd.h" #include "trace-gui.h" #include "kernel-shark.h" #include "version.h" #define default_output_file "trace.dat" #define PLUGIN_NONE "NONE" #define DIALOG_WIDTH 820 #define DIALOG_HEIGHT 600 #define CAP_STOP "Stop" #define DEFAULT_MAX_BUF_SIZE 1000000 struct trace_capture { struct pevent *pevent; struct shark_info *info; GtkWidget *main_dialog; GtkWidget *command_entry; GtkWidget *file_entry; GtkWidget *output_text; GtkTextBuffer *output_buffer; GtkWidget *event_view; GtkWidget *plugin_combo; GtkWidget *settings_combo; GtkWidget *run_button; GtkWidget *max_num_entry; pthread_t thread; gboolean kill_thread; gboolean capture_done; gboolean load_file; int command_input_fd; int command_output_fd; int command_pid; }; static int is_just_ws(const char *str) { int i; for (i = 0; str[i]; i++) if (!isspace(str[i])) break; return !str[i]; } static gboolean settings_saved; static GString *get_home_settings_new(void) { char *path = getenv("HOME"); GString *str; str = g_string_new(path); g_string_append(str, "/.trace-cmd/settings/"); return str; } static int create_home_settings(void) { char *path = getenv("HOME"); GString *str; struct stat st; int ret; str = g_string_new(path); g_string_append(str, "/.trace-cmd"); ret = stat(str->str, &st); if (ret < 0) { ret = mkdir(str->str, 0755); if (ret < 0) { warning("Can not create %s", str->str); goto out; } } g_string_append(str, "/settings"); ret = stat(str->str, &st); if (ret < 0) { ret = mkdir(str->str, 0755); if (ret < 0) { warning("Can not create %s", str->str); goto out; } } ret = 0; out: g_string_free(str, TRUE); return ret; } static GtkTreeModel *create_settings_model(gpointer data) { struct dirent *dent; GtkListStore *list; GtkTreeIter iter; struct stat st; GString *str; DIR *dir; int ret; list = gtk_list_store_new(2, G_TYPE_STRING, G_TYPE_STRING); gtk_list_store_append(list, &iter); gtk_list_store_set(list, &iter, 0, "Current", 1, "", -1); /* Search for user settings first */ str = get_home_settings_new(); ret = stat(str->str, &st); if (ret < 0 || !S_ISDIR(st.st_mode)) goto read_system; dir = opendir(str->str); if (!dir) goto read_system; while ((dent = readdir(dir))) { const char *name = dent->d_name; GString *file; gchar *item; if (strcmp(name, ".") == 0 || strcmp(name, "..") == 0) continue; if (strcmp(name + strlen(name) - 4, ".kss") != 0) continue; file = g_string_new(str->str); g_string_append_printf(file, "/%s", name); /* Save the file name but remove the .kss extention */ item = g_strdup(name); item[strlen(name) - 4] = 0; gtk_list_store_append(list, &iter); gtk_list_store_set(list, &iter, 0, item, 1, file->str, -1); g_free(item); g_string_free(file, TRUE); } read_system: g_string_free(str, TRUE); return GTK_TREE_MODEL(list); } static void refresh_settings(struct trace_capture *cap) { GtkTreeModel *model; model = create_settings_model(NULL); gtk_combo_box_set_model(GTK_COMBO_BOX(cap->settings_combo), model); g_object_unref(model); } static void ks_clear_capture_events(struct shark_info *info) { info->cap_all_events = FALSE; tracecmd_free_list(info->cap_systems); info->cap_systems = NULL; free(info->cap_events); info->cap_events = NULL; } static void clear_capture_events(struct trace_capture *cap) { ks_clear_capture_events(cap->info); } void kernel_shark_clear_capture(struct shark_info *info) { ks_clear_capture_events(info); g_free(info->cap_plugin); info->cap_plugin = NULL; g_free(info->cap_settings_name); info->cap_settings_name = NULL; free(info->cap_file); info->cap_file = NULL; g_free(info->cap_buffer_output); info->cap_buffer_output = NULL; } static gboolean end_capture(struct trace_capture *cap) { const char *filename; const char *val; int pid; val = gtk_button_get_label(GTK_BUTTON(cap->run_button)); if (strcmp(val, CAP_STOP) != 0) return FALSE; gtk_button_set_label(GTK_BUTTON(cap->run_button), "Run"); cap->capture_done = TRUE; pid = cap->command_pid; cap->command_pid = 0; if (pid) { kill(pid, SIGINT); gdk_threads_leave(); waitpid(pid, NULL, 0); gdk_threads_enter(); } if (cap->kill_thread) { gdk_threads_leave(); pthread_join(cap->thread, NULL); gdk_threads_enter(); cap->kill_thread = FALSE; } if (cap->command_input_fd) { close(cap->command_input_fd); cap->command_input_fd = 0; } if (cap->command_output_fd) { close(cap->command_output_fd); cap->command_output_fd = 0; } if (cap->load_file) { filename = gtk_entry_get_text(GTK_ENTRY(cap->file_entry)); kernelshark_load_file(cap->info, filename); cap->load_file = FALSE; } return TRUE; } static int is_latency(char *plugin) { return strcmp(plugin, "wakeup") == 0 || strcmp(plugin, "wakeup_rt") == 0 || strcmp(plugin, "irqsoff") == 0 || strcmp(plugin, "preemptoff") == 0 || strcmp(plugin, "preemptirqsoff") == 0; } static int calculate_trace_cmd_words(struct trace_capture *cap) { int words = 4; /* trace-cmd record -o file */ int i; if (cap->info->cap_all_events) words += 2; else { if (cap->info->cap_systems) { for (i = 0; cap->info->cap_systems[i]; i++) words += 2; } if (cap->info->cap_events) for (i = 0; cap->info->cap_events[i] >= 0; i++) words += 2; } if (cap->info->cap_plugin) words += 2; return words; } static char *find_tracecmd(void) { struct stat st; char *path = getenv("PATH"); char *saveptr; char *str; char *loc; char *tracecmd = NULL; int len; int ret; if (!path) return NULL; path = strdup(path); for (str = path; ; str = NULL) { loc = strtok_r(str, ":", &saveptr); if (!loc) break; len = strlen(loc) + 11; tracecmd = malloc_or_die(len); snprintf(tracecmd, len, "%s/trace-cmd", loc); ret = stat(tracecmd, &st); if (ret >= 0 && S_ISREG(st.st_mode)) { /* Do we have execute permissions */ if (st.st_uid == geteuid() && st.st_mode & S_IXUSR) break; if (st.st_gid == getegid() && st.st_mode & S_IXGRP) break; if (st.st_mode & S_IXOTH) break; } free(tracecmd); tracecmd = NULL; } free(path); return tracecmd; } static int add_trace_cmd_words(struct trace_capture *cap, char **args) { struct event_format *event; char **systems = cap->info->cap_systems; const gchar *output; int *events = cap->info->cap_events; int words = 0; int len; int i; output = gtk_entry_get_text(GTK_ENTRY(cap->file_entry)); args[words++] = find_tracecmd(); if (!args[0]) return -1; args[words++] = strdup("record"); args[words++] = strdup("-o"); args[words++] = strdup(output); if (cap->info->cap_plugin) { args[words++] = strdup("-p"); args[words++] = strdup(cap->info->cap_plugin); } if (cap->info->cap_all_events) { args[words++] = strdup("-e"); args[words++] = strdup("all"); } else { if (systems) { for (i = 0; systems[i]; i++) { args[words++] = strdup("-e"); args[words++] = strdup(systems[i]); } } if (events) { for (i = 0; events[i] >= 0; i++) { event = pevent_find_event(cap->pevent, events[i]); if (!event) continue; args[words++] = strdup("-e"); len = strlen(event->name) + strlen(event->system) + 2; args[words] = malloc_or_die(len); snprintf(args[words++], len, "%s:%s", event->system, event->name); } } } return words; } static gchar *get_combo_text(GtkComboBox *combo) { GtkTreeModel *model; GtkTreeIter iter; gchar *text; model = gtk_combo_box_get_model(combo); if (!model) return NULL; if (!gtk_combo_box_get_active_iter(combo, &iter)) return NULL; gtk_tree_model_get(model, &iter, 0, &text, -1); return text; } static void update_plugin(struct trace_capture *cap) { cap->info->cap_plugin = get_combo_text(GTK_COMBO_BOX(cap->plugin_combo)); if (strcmp(cap->info->cap_plugin, PLUGIN_NONE) == 0) { g_free(cap->info->cap_plugin); cap->info->cap_plugin = NULL; } } /* * The plugin and settings combo's are set by the first item * in the model. The can share the same code to set the model. * * Return TRUE if set, FALSE if name was not found. */ static int set_combo(GtkComboBox *combo, const char *name) { GtkTreeModel *model; GtkTreeIter iter; gchar *text; gboolean ret; model = gtk_combo_box_get_model(combo); if (!model) return FALSE; if (!gtk_tree_model_get_iter_first(model, &iter)) return FALSE; do { gtk_tree_model_get(model, &iter, 0, &text, -1); if (strcmp(text, name) == 0) { g_free(text); break; } g_free(text); ret = gtk_tree_model_iter_next(model, &iter); } while (ret); if (ret) { /* Found */ gtk_combo_box_set_active_iter(GTK_COMBO_BOX(combo), &iter); return TRUE; } /* set to first item (default) */ gtk_tree_model_get_iter_first(model, &iter); gtk_combo_box_set_active_iter(GTK_COMBO_BOX(combo), &iter); return FALSE; } static void set_plugin(struct trace_capture *cap) { GtkComboBox *combo = GTK_COMBO_BOX(cap->plugin_combo); const gchar *plugin = cap->info->cap_plugin; if (!plugin) plugin = PLUGIN_NONE; if (set_combo(combo, plugin)) return; /* Not found? */ g_free(cap->info->cap_plugin); cap->info->cap_plugin = NULL; } static void set_settings(struct trace_capture *cap) { GtkComboBox *combo = GTK_COMBO_BOX(cap->settings_combo); const gchar *name = cap->info->cap_settings_name; if (!name) name = ""; if (set_combo(combo, name)) return; /* Not found? */ g_free(cap->info->cap_settings_name); cap->info->cap_settings_name = NULL; } static void update_events(struct trace_capture *cap) { struct shark_info *info = cap->info; if (!cap->event_view) return; clear_capture_events(cap); trace_extract_event_list_view(cap->event_view, &info->cap_all_events, &info->cap_systems, &info->cap_events); } static void execute_command(struct trace_capture *cap) { const gchar *ccommand; gchar *command; gchar **args; gboolean space; int words; int tc_words; int i; update_plugin(cap); update_events(cap); ccommand = gtk_entry_get_text(GTK_ENTRY(cap->command_entry)); if (!ccommand || !strlen(ccommand) || is_just_ws(ccommand)) { words = 0; command = NULL; } else { command = strdup(ccommand); space = TRUE; words = 0; for (i = 0; command[i]; i++) { if (isspace(command[i])) space = TRUE; else { if (space) words++; space = FALSE; } } } tc_words = calculate_trace_cmd_words(cap); args = malloc_or_die(sizeof(*args) * (tc_words + words + 1)); add_trace_cmd_words(cap, args); words = tc_words; space = TRUE; for (i = 0; command && command[i]; i++) { if (isspace(command[i])) { space = TRUE; command[i] = 0; } else { if (space) { args[words] = &command[i]; words++; } space = FALSE; } } args[words] = NULL; write(1, "# ", 2); for (i = 0; args[i]; i++) { write(1, args[i], strlen(args[i])); write(1, " ", 1); } write(1, "\n", 1); execvp(args[0], args); perror("execvp"); for (i = 0; args[i]; i++) free(args[i]); free(args); g_free(cap->info->cap_plugin); } static void *monitor_pipes(void *data) { struct trace_capture *cap = data; GtkTextIter start_iter; GtkTextIter cut_iter; GtkTextIter iter; gchar buf[BUFSIZ+1]; struct timeval tv; const char *val; fd_set fds; gboolean eof; int max_size; int total; int del; int ret; int r; gdk_threads_enter(); /* get the max size */ val = gtk_entry_get_text(GTK_ENTRY(cap->max_num_entry)); max_size = atoi(val); /* Clear the buffer */ gtk_text_buffer_get_start_iter(cap->output_buffer, &start_iter); gtk_text_buffer_get_end_iter(cap->output_buffer, &cut_iter); gtk_text_buffer_delete(cap->output_buffer, &start_iter, &cut_iter); total = 0; gdk_threads_leave(); do { FD_ZERO(&fds); FD_SET(cap->command_input_fd, &fds); tv.tv_sec = 6; tv.tv_usec = 0; ret = select(cap->command_input_fd+1, &fds, NULL, NULL, &tv); if (ret < 0) break; eof = TRUE; while ((r = read(cap->command_input_fd, buf, BUFSIZ)) > 0) { eof = FALSE; buf[r] = 0; total += r; if (total > max_size) del = total - max_size; else del = 0; gdk_threads_enter(); if (del) { gtk_text_buffer_get_start_iter(cap->output_buffer, &start_iter); gtk_text_buffer_get_start_iter(cap->output_buffer, &cut_iter); gtk_text_iter_forward_chars(&cut_iter, del); gtk_text_buffer_delete(cap->output_buffer, &start_iter, &cut_iter); total -= del; } gtk_text_buffer_get_end_iter(cap->output_buffer, &iter); gtk_text_buffer_insert(cap->output_buffer, &iter, buf, -1); gdk_threads_leave(); } } while (!cap->capture_done && !eof); if (eof) { gdk_threads_enter(); end_capture(cap); gdk_threads_leave(); } pthread_exit(NULL); } static void run_command(struct trace_capture *cap) { int brass[2]; int copper[2]; int pid; if (pipe(brass) < 0) { warning("Could not create pipe"); return; } if (pipe(copper) < 0) { warning("Could not create pipe"); goto fail_pipe; } if ((pid = fork()) < 0) { warning("Could not fork process"); goto fail_fork; } cap->command_pid = pid; if (!pid) { close(brass[0]); close(copper[1]); close(0); close(1); close(2); dup(copper[0]); dup(brass[1]); dup(brass[1]); execute_command(cap); close(1); exit(0); } close(brass[1]); close(copper[0]); /* these should never be 0 */ if (!brass[1] || !copper[0]) warning("Pipes have zero as file descriptor"); cap->command_input_fd = brass[0]; cap->command_output_fd = copper[1]; /* Do not create a thread under the gdk lock */ gdk_threads_leave(); if (pthread_create(&cap->thread, NULL, monitor_pipes, cap) < 0) warning("Failed to create thread"); else { cap->kill_thread = TRUE; cap->load_file = TRUE; } gdk_threads_enter(); return; fail_fork: close(copper[0]); close(copper[1]); fail_pipe: close(brass[0]); close(brass[1]); } static int trim_plugins(char **plugins) { int len = 0; int i; if (!plugins) return 0; for (i = 0; plugins[i]; i++) { if (is_latency(plugins[i])) continue; plugins[len++] = plugins[i]; } plugins[len] = NULL; return len; } static void file_clicked (GtkWidget *widget, gpointer data) { struct trace_capture *cap = data; gchar *filename; filename = trace_get_file_dialog_filter("Trace File", "Save", TRACE_DIALOG_FILTER_DATA, FALSE); if (!filename) return; gtk_entry_set_text(GTK_ENTRY(cap->file_entry), filename); } static void execute_button_clicked(struct trace_capture *cap) { struct stat st; GtkResponseType ret; const char *filename; char *tracecmd; if (end_capture(cap)) return; tracecmd = find_tracecmd(); if (!tracecmd) { warning("trace-cmd not found in path"); return; } free(tracecmd); filename = gtk_entry_get_text(GTK_ENTRY(cap->file_entry)); if (stat(filename, &st) >= 0) { ret = trace_dialog(GTK_WINDOW(cap->main_dialog), TRACE_GUI_ASK, "The file '%s' already exists.\n" "Are you sure you want to replace it", filename); if (ret == GTK_RESPONSE_NO) return; } gtk_button_set_label(GTK_BUTTON(cap->run_button), CAP_STOP); run_command(cap); } static int load_events(struct trace_capture *cap, struct tracecmd_xml_handle *handle, struct tracecmd_xml_system_node *node) { struct shark_info *info = cap->info; struct tracecmd_xml_system_node *event_node; struct event_format *event; struct pevent *pevent = cap->pevent; const char *name; int *events = NULL; int event_len = 0; const char *system; const char *event_name; for (node = tracecmd_xml_node_child(node); node; node = tracecmd_xml_node_next(node)) { name = tracecmd_xml_node_type(node); if (strcmp(name, "Event") != 0) continue; event_node = tracecmd_xml_node_child(node); if (!event_node) continue; name = tracecmd_xml_node_type(event_node); if (strcmp(name, "System") != 0) continue; system = tracecmd_xml_node_value(handle, event_node); event_node = tracecmd_xml_node_next(event_node); if (!event_node) continue; name = tracecmd_xml_node_type(event_node); if (strcmp(name, "Name") != 0) continue; event_name = tracecmd_xml_node_value(handle, event_node); event = pevent_find_event_by_name(pevent, system, event_name); if (!event) continue; events = tracecmd_add_id(events, event->id, event_len++); } info->cap_events = events; return 0; } static int load_cap_events(struct trace_capture *cap, struct tracecmd_xml_handle *handle, struct tracecmd_xml_system_node *node) { struct shark_info *info = cap->info; const char *name; char **systems = NULL; int sys_len = 0; ks_clear_capture_events(info); for (node = tracecmd_xml_node_child(node); node; node = tracecmd_xml_node_next(node)) { name = tracecmd_xml_node_type(node); if (strcmp(name, "CaptureType") == 0) { name = tracecmd_xml_node_value(handle, node); if (strcmp(name, "all events") == 0) { info->cap_all_events = TRUE; break; } continue; } else if (strcmp(name, "System") == 0) { name = tracecmd_xml_node_value(handle, node); systems = tracecmd_add_list(systems, name, sys_len++); } else if (strcmp(name, "Events") == 0) load_events(cap, handle, node); } info->cap_systems = systems; return 0; } static void load_settings(struct trace_capture *cap, gchar *filename) { struct shark_info *info = cap->info; struct tracecmd_xml_system_node *syschild; struct tracecmd_xml_handle *handle; struct tracecmd_xml_system *system; const char *plugin; const char *name; handle = tracecmd_xml_open(filename); if (!handle) { warning("Could not open %s", filename); return; } system = tracecmd_xml_find_system(handle, "CaptureSettings"); if (!system) goto out; syschild = tracecmd_xml_system_node(system); if (!syschild) goto out_free_sys; g_free(info->cap_plugin); info->cap_plugin = NULL; do { name = tracecmd_xml_node_type(syschild); if (strcmp(name, "Events") == 0) { load_cap_events(cap, handle, syschild); trace_update_event_view(cap->event_view, cap->pevent, NULL, info->cap_all_events, info->cap_systems, info->cap_events); } else if (strcmp(name, "Plugin") == 0) { plugin = tracecmd_xml_node_value(handle, syschild); info->cap_plugin = g_strdup(plugin); } else if (strcmp(name, "Command") == 0) { name = tracecmd_xml_node_value(handle, syschild); gtk_entry_set_text(GTK_ENTRY(cap->command_entry), name); } else if (strcmp(name, "File") == 0) { name = tracecmd_xml_node_value(handle, syschild); gtk_entry_set_text(GTK_ENTRY(cap->file_entry), name); } syschild = tracecmd_xml_node_next(syschild); } while (syschild); set_plugin(cap); out_free_sys: tracecmd_xml_free_system(system); out: tracecmd_xml_close(handle); } static void settings_changed(GtkComboBox *combo, gpointer data) { struct trace_capture *cap = data; GtkTreeModel *model; GtkTreeIter iter; gchar *text; model = gtk_combo_box_get_model(combo); if (!model) return; if (!gtk_combo_box_get_active_iter(combo, &iter)) return; gtk_tree_model_get(model, &iter, 1, &text, -1); if (text && strlen(text)) load_settings(cap, text); g_free(text); } static void import_settings_clicked(GtkWidget *widget, gpointer data) { struct trace_capture *cap = data; gchar *filename; filename = trace_get_file_dialog_filter("Import Settings", NULL, TRACE_DIALOG_FILTER_SETTING, FALSE); if (!filename) return; load_settings(cap, filename); g_free(filename); } static void save_events(struct trace_capture *cap, struct tracecmd_xml_handle *handle) { struct pevent *pevent = cap->pevent; struct event_format *event; char **systems = cap->info->cap_systems; int *events = cap->info->cap_events; int i; tracecmd_xml_write_element(handle, "CaptureType", "Events"); for (i = 0; systems && systems[i]; i++) tracecmd_xml_write_element(handle, "System", systems[i]); if (!events || events[0] < 0) return; tracecmd_xml_start_sub_system(handle, "Events"); for (i = 0; events[i] > 0; i++) { event = pevent_find_event(pevent, events[i]); if (event) { tracecmd_xml_start_sub_system(handle, "Event"); tracecmd_xml_write_element(handle, "System", event->system); tracecmd_xml_write_element(handle, "Name", event->name); tracecmd_xml_end_sub_system(handle); } } tracecmd_xml_end_sub_system(handle); } static void save_settings(struct trace_capture *cap, const char *filename) { struct shark_info *info = cap->info; struct tracecmd_xml_handle *handle; const char *file; const char *command; handle = tracecmd_xml_create(filename, VERSION_STRING); if (!handle) { warning("Could not create %s", filename); return; } update_events(cap); tracecmd_xml_start_system(handle, "CaptureSettings"); tracecmd_xml_start_sub_system(handle, "Events"); if (info->cap_all_events) tracecmd_xml_write_element(handle, "CaptureType", "all events"); else if ((info->cap_systems && info->cap_systems[0]) || (info->cap_events && info->cap_events[0] >= 0)) { save_events(cap, handle); } tracecmd_xml_end_sub_system(handle); update_plugin(cap); if (info->cap_plugin) tracecmd_xml_write_element(handle, "Plugin", info->cap_plugin); command = gtk_entry_get_text(GTK_ENTRY(cap->command_entry)); if (command && strlen(command) && !is_just_ws(command)) tracecmd_xml_write_element(handle, "Command", command); file = gtk_entry_get_text(GTK_ENTRY(cap->file_entry)); if (file && strlen(file) && !is_just_ws(file)) tracecmd_xml_write_element(handle, "File", file); tracecmd_xml_end_system(handle); tracecmd_xml_close(handle); } static void save_settings_clicked(GtkWidget *widget, gpointer data) { struct trace_capture *cap = data; struct stat st; GtkWidget *dialog; GtkWidget *hbox; GtkWidget *label; GtkWidget *entry; GString *file; const char *name; gint result; int ret; dialog = gtk_dialog_new_with_buttons("Save Settings", NULL, GTK_DIALOG_MODAL, GTK_STOCK_OK, GTK_RESPONSE_ACCEPT, GTK_STOCK_CANCEL, GTK_RESPONSE_REJECT, NULL); hbox = gtk_hbox_new(FALSE, 0); gtk_box_pack_start(GTK_BOX(GTK_DIALOG(dialog)->vbox), hbox, FALSE, FALSE, 0); gtk_widget_show(hbox); label = gtk_label_new("Settings Name: "); gtk_box_pack_start(GTK_BOX(hbox), label, FALSE, FALSE, 0); gtk_widget_show(label); entry = gtk_entry_new(); gtk_box_pack_start(GTK_BOX(hbox), entry, FALSE, FALSE, 0); gtk_widget_show(entry); again: result = gtk_dialog_run(GTK_DIALOG(dialog)); switch (result) { case GTK_RESPONSE_ACCEPT: name = gtk_entry_get_text(GTK_ENTRY(entry)); if (!name || is_just_ws(name)) { warning("Must enter a name"); goto again; } /* Make sure home settings exists */ if (create_home_settings() < 0) break; file = get_home_settings_new(); g_string_append_printf(file, "/%s.kss", name); ret = stat(file->str, &st); if (ret >= 0) { ret = trace_dialog(GTK_WINDOW(dialog), TRACE_GUI_ASK, "The setting '%s' already exists.\n" "Are you sure you want to replace it", name); if (ret == GTK_RESPONSE_NO) { g_string_free(file, TRUE); goto again; } } save_settings(cap, file->str); refresh_settings(cap); g_free(cap->info->cap_settings_name); cap->info->cap_settings_name = g_strdup(name); set_settings(cap); g_string_free(file, TRUE); break; case GTK_RESPONSE_REJECT: break; default: break; }; gtk_widget_destroy(dialog); } static void export_settings_clicked(GtkWidget *widget, gpointer data) { struct trace_capture *cap = data; gchar *filename; filename = trace_get_file_dialog_filter("Save Settings", "Save", TRACE_DIALOG_FILTER_SETTING, TRUE); if (!filename) return; save_settings(cap, filename); g_free(filename); } static GtkTreeModel *create_plugin_combo_model(gpointer data) { char **plugins = data; GtkListStore *list; GtkTreeIter iter; int i; list = gtk_list_store_new(1, G_TYPE_STRING); gtk_list_store_append(list, &iter); gtk_list_store_set(list, &iter, 0, PLUGIN_NONE, -1); for (i = 0; plugins && plugins[i]; i++) { gtk_list_store_append(list, &iter); gtk_list_store_set(list, &iter, 0, plugins[i], -1); } return GTK_TREE_MODEL(list); } static void insert_text(GtkEditable *buffer, gchar *new_text, gint new_text_length, gint *position, gpointer data) { int i; guint sigid; /* Only allow 0-9 to be written to the entry */ for (i = 0; i < new_text_length; i++) { if (new_text[i] < '0' || new_text[i] > '9') { sigid = g_signal_lookup("insert-text", G_OBJECT_TYPE(buffer)); g_signal_stop_emission(buffer, sigid, 0); return; } } } /* * Trace Capture Dialog Window * * +--------------------------------------------------------------------+ * | Dialog Window | * | +-------------------------------+-------------------------------+ | * | | Paned Window | +---------------------------+ | | * | | +---------------------------+ | | Scroll window | | | * | | | Hbox | | | +-----------------------+ | | | * | | | Label Plugin Combo | | | | Event Tree | | | | * | | +---------------------------+ | | | | | | | * | | | | | | | | | * | | | | +-----------------------+ | | | * | | | +---------------------------+ | | * | +-------------------------------+-------------------------------+ | * +--------------------------------------------------------------------+ */ static void tracing_dialog(struct shark_info *info, const char *tracing) { struct pevent *pevent; GtkWidget *dialog; GtkWidget *button; GtkWidget *combo; GtkWidget *label; GtkWidget *entry; GtkWidget *frame; GtkWidget *vbox; GtkWidget *scrollwin; GtkWidget *table; GtkWidget *table2; GtkWidget *event_tree; GtkWidget *viewport; GtkWidget *textview; GtkWidget *hbox; GtkTextBuffer *buffer; GtkTextIter start_iter; GtkTextIter end_iter; char **plugins; int nr_plugins; struct trace_capture cap; const gchar *file; const char *command; const char *val; GString *str; gint result; memset(&cap, 0, sizeof(cap)); cap.info = info; plugins = tracecmd_local_plugins(tracing); /* Skip latency plugins */ nr_plugins = trim_plugins(plugins); if (!nr_plugins && plugins) { tracecmd_free_list(plugins); plugins = NULL; } /* Send parse warnings to status display */ trace_dialog_register_alt_warning(vpr_stat); pevent = tracecmd_local_events(tracing); trace_dialog_register_alt_warning(NULL); cap.pevent = pevent; if (!pevent && !nr_plugins) { warning("No events or plugins found"); return; } dialog = gtk_dialog_new(); gtk_window_set_title(GTK_WINDOW(dialog), "Capture"); button = gtk_button_new_with_label("Run"); gtk_dialog_add_action_widget(GTK_DIALOG(dialog), button, GTK_RESPONSE_ACCEPT); gtk_widget_show(button); cap.run_button = button; gtk_dialog_add_button(GTK_DIALOG(dialog), GTK_STOCK_CLOSE, GTK_RESPONSE_REJECT); cap.main_dialog = dialog; /* --- Top Level Hpaned --- */ table = gtk_table_new(4, 2, FALSE); /* It is possible that no pevents exist. */ if (pevent) { scrollwin = gtk_scrolled_window_new(NULL, NULL); gtk_scrolled_window_set_policy(GTK_SCROLLED_WINDOW(scrollwin), GTK_POLICY_AUTOMATIC, GTK_POLICY_AUTOMATIC); gtk_table_attach(GTK_TABLE(table), scrollwin, 0, 1, 1, 2, GTK_FILL, GTK_FILL|GTK_EXPAND, 0, 0); gtk_widget_show(scrollwin); event_tree = trace_create_event_list_view(pevent, NULL, cap.info->cap_all_events, cap.info->cap_systems, cap.info->cap_events); gtk_container_add(GTK_CONTAINER(scrollwin), event_tree); gtk_widget_show(event_tree); cap.event_view = event_tree; } else { /* No events */ label = gtk_label_new("No events enabled on system"); gtk_table_attach(GTK_TABLE(table), label, 0, 1, 1, 2, GTK_FILL, GTK_EXPAND|GTK_FILL, 0, 10); gtk_widget_show(label); cap.event_view = NULL; } gtk_box_pack_start(GTK_BOX(GTK_DIALOG(dialog)->vbox), table, TRUE, TRUE, 0); gtk_widget_show(table); /*------------------ Frame Settings --------------------------- */ frame = gtk_frame_new("Settings"); gtk_table_attach(GTK_TABLE(table), frame, 0, 1, 0, 1, GTK_FILL, 0, 0, 10); gtk_widget_show(frame); table2 = gtk_table_new(2, 3, FALSE); gtk_container_add(GTK_CONTAINER(frame), table2); gtk_widget_show(table2); gtk_table_set_col_spacings(GTK_TABLE(table2), 5); button = gtk_button_new_with_label("Save Settings"); gtk_table_attach_defaults(GTK_TABLE(table2), button, 0, 1, 0, 1); gtk_widget_show(button); g_signal_connect (button, "clicked", G_CALLBACK (save_settings_clicked), (gpointer)&cap); button = gtk_button_new_with_label("Import Settings"); gtk_table_attach_defaults(GTK_TABLE(table2), button, 1, 2, 0, 1); gtk_widget_show(button); g_signal_connect (button, "clicked", G_CALLBACK (import_settings_clicked), (gpointer)&cap); button = gtk_button_new_with_label("Export Settings"); gtk_table_attach_defaults(GTK_TABLE(table2), button, 2, 3, 0, 1); gtk_widget_show(button); g_signal_connect (button, "clicked", G_CALLBACK (export_settings_clicked), (gpointer)&cap); if (cap.info->cap_settings_name) set_settings(&cap); label = gtk_label_new("Available Settings: "); gtk_table_attach_defaults(GTK_TABLE(table2), label, 0, 1, 1, 2); gtk_widget_show(label); combo = trace_create_combo_box(NULL, NULL, create_settings_model, NULL); gtk_table_attach_defaults(GTK_TABLE(table2), combo, 1, 3, 1, 2); cap.settings_combo = combo; g_signal_connect (combo, "changed", G_CALLBACK (settings_changed), (gpointer)&cap); /*------------------ Frame Settings --------------------------- */ frame = gtk_frame_new("Execute"); gtk_table_attach(GTK_TABLE(table), frame, 0, 1, 3, 4, GTK_FILL, 0, 0, 10); gtk_widget_show(frame); table2 = gtk_table_new(3, 3, FALSE); gtk_container_add(GTK_CONTAINER(frame), table2); gtk_widget_show(table2); label = gtk_label_new("Plugin: "); gtk_table_attach_defaults(GTK_TABLE(table2), label, 0, 1, 0, 1); gtk_widget_show(label); combo = trace_create_combo_box(NULL, NULL, create_plugin_combo_model, plugins); cap.plugin_combo = combo; gtk_table_attach_defaults(GTK_TABLE(table2), combo, 1, 3, 0, 1); if (cap.info->cap_plugin) set_plugin(&cap); label = gtk_label_new("Command:"); gtk_table_attach_defaults(GTK_TABLE(table2), label, 0, 1, 1, 2); gtk_widget_show(label); entry = gtk_entry_new(); gtk_table_attach_defaults(GTK_TABLE(table2), entry, 1, 3, 1, 2); gtk_widget_show(entry); cap.command_entry = entry; if (cap.info->cap_command) gtk_entry_set_text(GTK_ENTRY(entry), cap.info->cap_command); label = gtk_label_new("Output file: "); gtk_table_attach_defaults(GTK_TABLE(table2), label, 0, 1, 2, 3); gtk_widget_show(label); entry = gtk_entry_new(); gtk_table_attach_defaults(GTK_TABLE(table2), entry, 1, 2, 2, 3); gtk_widget_show(entry); if (cap.info->cap_file) file = cap.info->cap_file; else file = default_output_file; gtk_entry_set_text(GTK_ENTRY(entry), file); cap.file_entry = entry; button = gtk_button_new_with_label("Browse"); gtk_table_attach_defaults(GTK_TABLE(table2), button, 2, 3, 2, 3); gtk_widget_show(button); g_signal_connect (button, "clicked", G_CALLBACK (file_clicked), (gpointer)&cap); /*------------------ Command Output ------------------ */ vbox = gtk_vbox_new(FALSE, 0); gtk_table_attach_defaults(GTK_TABLE(table), vbox, 1, 2, 0, 4); gtk_widget_show(vbox); gtk_widget_set_size_request(GTK_WIDGET(vbox), 500, 0); label = gtk_label_new("Output Display:"); gtk_box_pack_start(GTK_BOX(vbox), label, FALSE, FALSE, 0); gtk_widget_show(label); scrollwin = gtk_scrolled_window_new(NULL, NULL); gtk_scrolled_window_set_policy(GTK_SCROLLED_WINDOW(scrollwin), GTK_POLICY_AUTOMATIC, GTK_POLICY_AUTOMATIC); gtk_box_pack_start(GTK_BOX(vbox), scrollwin, TRUE, TRUE, 0); gtk_widget_show(scrollwin); viewport = gtk_viewport_new(NULL, NULL); gtk_widget_show(viewport); gtk_container_add(GTK_CONTAINER(scrollwin), viewport); textview = gtk_text_view_new(); buffer = gtk_text_view_get_buffer(GTK_TEXT_VIEW(textview)); gtk_container_add(GTK_CONTAINER(viewport), textview); gtk_widget_show(textview); cap.output_text = textview; cap.output_buffer = buffer; /* set the buffer from its previous setting */ if (info->cap_buffer_output) gtk_text_buffer_set_text(buffer, info->cap_buffer_output, strlen(info->cap_buffer_output)); hbox = gtk_hbox_new(FALSE, 0); gtk_box_pack_start(GTK_BOX(vbox), hbox, FALSE, FALSE, 0); gtk_widget_show(hbox); label = gtk_label_new("Max # of characters in output display: "); gtk_box_pack_start(GTK_BOX(hbox), label, FALSE, FALSE, 0); gtk_widget_show(label); entry = gtk_entry_new(); gtk_box_pack_start(GTK_BOX(hbox), entry, FALSE, FALSE, 0); gtk_widget_show(entry); cap.max_num_entry = entry; if (!info->cap_max_buf_size) info->cap_max_buf_size = DEFAULT_MAX_BUF_SIZE; str = g_string_new(""); g_string_append_printf(str, "%d", info->cap_max_buf_size); gtk_entry_set_text(GTK_ENTRY(entry), str->str); g_string_free(str, TRUE); g_signal_connect (entry, "insert-text", G_CALLBACK (insert_text), (gpointer)&cap); gtk_widget_set_size_request(GTK_WIDGET(dialog), DIALOG_WIDTH, DIALOG_HEIGHT); gtk_widget_show(dialog); cont: result = gtk_dialog_run(GTK_DIALOG(dialog)); if (result == GTK_RESPONSE_ACCEPT) { execute_button_clicked(&cap); goto cont; } /* Make sure no capture is running */ end_capture(&cap); /* Get the max buffer size */ val = gtk_entry_get_text(GTK_ENTRY(entry)); info->cap_max_buf_size = atoi(val); gtk_text_buffer_get_start_iter(cap.output_buffer, &start_iter); gtk_text_buffer_get_end_iter(cap.output_buffer, &end_iter); g_free(info->cap_buffer_output); info->cap_buffer_output = gtk_text_buffer_get_text(cap.output_buffer, &start_iter, &end_iter, FALSE); /* save the plugin and file to reuse if we come back */ update_plugin(&cap); free(info->cap_file); cap.info->cap_file = strdup(gtk_entry_get_text(GTK_ENTRY(cap.file_entry))); free(info->cap_command); command = gtk_entry_get_text(GTK_ENTRY(cap.command_entry)); if (command && strlen(command) && !is_just_ws(command)) cap.info->cap_command = strdup(command); else cap.info->cap_command = NULL; update_events(&cap); gtk_widget_destroy(dialog); if (pevent) pevent_free(pevent); if (plugins) tracecmd_free_list(plugins); } void tracecmd_capture_clicked(gpointer data) { struct shark_info *info = data; char *tracing; tracing = tracecmd_get_tracing_dir(); if (!tracing) { warning("Can not find or mount tracing directory!\n" "Either tracing is not configured for this kernel\n" "or you do not have the proper permissions to mount the directory"); return; } tracing_dialog(info, tracing); } trace-cmd-2.5.3/trace-capture.h000066400000000000000000000017641246701203100162740ustar00rootroot00000000000000/* * Copyright (C) 2009, 2010 Red Hat Inc, Steven Rostedt * * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; version 2 of the License (not later!) * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; if not, see * * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ */ #ifndef _TRACE_CAPTURE_H #define _TRACE_CAPTURE_H #include "kernel-shark.h" void tracecmd_capture_clicked(gpointer data); #endif /* _TRACE_CAPTURE_H */ trace-cmd-2.5.3/trace-cmd-local.h000066400000000000000000000026771246701203100164700ustar00rootroot00000000000000/* * Copyright (C) 2010 Red Hat Inc, Steven Rostedt * * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ * This program is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; * version 2.1 of the License (not later!) * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this program; if not, see * * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ */ #ifndef _TRACE_CMD_LOCAL_H #define _TRACE_CMD_LOCAL_H /* Local for trace-input.c and trace-output.c */ #include "trace-cmd.h" static ssize_t __do_write(int fd, const void *data, size_t size) { ssize_t tot = 0; ssize_t w; do { w = write(fd, data, size - tot); tot += w; if (!w) break; if (w < 0) return w; } while (tot != size); return tot; } static ssize_t __do_write_check(int fd, const void *data, size_t size) { ssize_t ret; ret = __do_write(fd, data, size); if (ret < 0) return ret; if (ret != size) return -1; return 0; } #endif /* _TRACE_CMD_LOCAL_H */ trace-cmd-2.5.3/trace-cmd.c000066400000000000000000000360501246701203100153630ustar00rootroot00000000000000/* * Copyright (C) 2008, 2009, 2010 Red Hat Inc, Steven Rostedt * * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; version 2 of the License (not later!) * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; if not, see * * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ */ #include #include #include #include #include #include #include "trace-local.h" int silence_warnings; int show_status; void warning(const char *fmt, ...) { va_list ap; if (silence_warnings) return; if (errno) perror("trace-cmd"); errno = 0; va_start(ap, fmt); fprintf(stderr, " "); vfprintf(stderr, fmt, ap); va_end(ap); fprintf(stderr, "\n"); } void pr_stat(const char *fmt, ...) { va_list ap; if (!show_status) return; va_start(ap, fmt); vprintf(fmt, ap); va_end(ap); printf("\n"); } void *malloc_or_die(unsigned int size) { void *data; data = malloc(size); if (!data) die("malloc"); return data; } static void dump_file_content(const char *path) { char buf[BUFSIZ]; ssize_t n; FILE *fp; fp = fopen(path, "r"); if (!fp) die("reading %s", path); do { n = fread(buf, 1, BUFSIZ, fp); if (n > 0) fwrite(buf, 1, n, stdout); } while (n > 0); fclose(fp); } void show_file(const char *name) { char *path; path = tracecmd_get_tracing_file(name); dump_file_content(path); tracecmd_put_tracing_file(path); } typedef int (*process_file_func)(char *buf, int len); static void process_file_re(process_file_func func, const char *name, const char *re) { regex_t reg; char *path; char *buf = NULL; char *str; FILE *fp; ssize_t n; size_t l = strlen(re); /* Just in case :-p */ if (!re || l == 0) { show_file(name); return; } /* Handle the newline at end of names for the user */ str = malloc_or_die(l + 3); strcpy(str, re); if (re[l-1] == '$') strcpy(&str[l-1], "\n*$"); if (regcomp(®, str, REG_ICASE|REG_NOSUB)) die("invalid function regex '%s'", re); free(str); path = tracecmd_get_tracing_file(name); fp = fopen(path, "r"); if (!fp) die("reading %s", path); tracecmd_put_tracing_file(path); do { n = getline(&buf, &l, fp); if (n > 0 && regexec(®, buf, 0, NULL, 0) == 0) func(buf, n); } while (n > 0); free(buf); fclose(fp); regfree(®); } static int show_file_write(char *buf, int len) { return fwrite(buf, 1, len, stdout); } static void show_file_re(const char *name, const char *re) { process_file_re(show_file_write, name, re); } static char *get_event_file(const char *type, char *buf, int len) { char *system; char *event; char *path; char *file; if (buf[len-1] == '\n') buf[len-1] = '\0'; system = strtok(buf, ":"); if (!system) die("no system found in %s", buf); event = strtok(NULL, ":"); if (!event) die("no event found in %s\n", buf); path = tracecmd_get_tracing_file("events"); file = malloc_or_die(strlen(path) + strlen(system) + strlen(event) + strlen(type) + strlen("///") + 1); sprintf(file, "%s/%s/%s/%s", path, system, event, type); tracecmd_put_tracing_file(path); return file; } static int event_filter_write(char *buf, int len) { char *file; if (buf[len-1] == '\n') buf[len-1] = '\0'; printf("%s\n", buf); file = get_event_file("filter", buf, len); dump_file_content(file); free(file); printf("\n"); return 0; } static int event_trigger_write(char *buf, int len) { char *file; if (buf[len-1] == '\n') buf[len-1] = '\0'; printf("%s\n", buf); file = get_event_file("trigger", buf, len); dump_file_content(file); free(file); printf("\n"); return 0; } static int event_format_write(char *fbuf, int len) { char *file = get_event_file("format", fbuf, len); char *buf = NULL; size_t l; FILE *fp; int n; /* The get_event_file() crops system in fbuf */ printf("system: %s\n", fbuf); /* Don't print the print fmt, it's ugly */ fp = fopen(file, "r"); if (!fp) die("reading %s", file); do { n = getline(&buf, &l, fp); if (n > 0) { if (strncmp(buf, "print fmt", 9) == 0) break; fwrite(buf, 1, n, stdout); } } while (n > 0); fclose(fp); free(buf); free(file); return 0; } static void show_event_filter_re(const char *re) { process_file_re(event_filter_write, "available_events", re); } static void show_event_trigger_re(const char *re) { process_file_re(event_trigger_write, "available_events", re); } static void show_event_format_re(const char *re) { process_file_re(event_format_write, "available_events", re); } void show_instance_file(struct buffer_instance *instance, const char *name) { char *path; path = get_instance_file(instance, name); dump_file_content(path); tracecmd_put_tracing_file(path); } enum { SHOW_EVENT_FORMAT = 1 << 0, SHOW_EVENT_FILTER = 1 << 1, SHOW_EVENT_TRIGGER = 1 << 2, }; static void show_events(const char *eventre, int flags) { if (flags && !eventre) die("When specifying event files, an event must be named"); if (eventre) { if (flags & SHOW_EVENT_FORMAT) show_event_format_re(eventre); else if (flags & SHOW_EVENT_FILTER) show_event_filter_re(eventre); else if (flags & SHOW_EVENT_TRIGGER) show_event_trigger_re(eventre); else show_file_re("available_events", eventre); } else show_file("available_events"); } static void show_tracers(void) { show_file("available_tracers"); } static void show_options(void) { show_file("trace_options"); } static void show_clocks(void) { show_file("trace_clock"); } static void show_functions(const char *funcre) { if (funcre) show_file_re("available_filter_functions", funcre); else show_file("available_filter_functions"); } static void show_buffers(void) { struct dirent *dent; DIR *dir; char *path; int printed = 0; path = tracecmd_get_tracing_file("instances"); dir = opendir(path); tracecmd_put_tracing_file(path); if (!dir) die("Can not read instance directory"); while ((dent = readdir(dir))) { const char *name = dent->d_name; if (strcmp(name, ".") == 0 || strcmp(name, "..") == 0) continue; printf("%s\n", name); printed = 1; } closedir(dir); if (!printed) printf("No buffer instances defined\n"); } static void show_plugins(void) { struct pevent *pevent; struct plugin_list *list; struct trace_seq s; pevent = pevent_alloc(); if (!pevent) die("Can not allocate pevent\n"); trace_seq_init(&s); list = tracecmd_load_plugins(pevent); trace_util_print_plugins(&s, " ", "\n", list); trace_seq_do_printf(&s); tracecmd_unload_plugins(list, pevent); pevent_free(pevent); } static void show_plugin_options(void) { struct pevent *pevent; struct plugin_list *list; struct trace_seq s; tracecmd_ftrace_load_options(); pevent = pevent_alloc(); if (!pevent) die("Can not allocate pevent\n"); trace_seq_init(&s); list = tracecmd_load_plugins(pevent); trace_util_print_plugin_options(&s); trace_seq_do_printf(&s); tracecmd_unload_plugins(list, pevent); pevent_free(pevent); } enum { OPT_tracing_on = 255, OPT_current_tracer = 254, OPT_buffer_size_kb = 253, OPT_buffer_total_size_kb = 252, OPT_ftrace_filter = 251, OPT_ftrace_notrace = 250, OPT_ftrace_pid = 249, OPT_graph_function = 248, OPT_graph_notrace = 247, OPT_cpumask = 246, }; int main (int argc, char **argv) { int c; errno = 0; if (argc < 2) usage(argv); if (strcmp(argv[1], "report") == 0) { trace_report(argc, argv); exit(0); } else if (strcmp(argv[1], "snapshot") == 0) { trace_snapshot(argc, argv); exit(0); } else if (strcmp(argv[1], "hist") == 0) { trace_hist(argc, argv); exit(0); } else if (strcmp(argv[1], "mem") == 0) { trace_mem(argc, argv); exit(0); } else if (strcmp(argv[1], "listen") == 0) { trace_listen(argc, argv); exit(0); } else if (strcmp(argv[1], "split") == 0) { trace_split(argc, argv); exit(0); } else if (strcmp(argv[1], "restore") == 0) { trace_restore(argc, argv); exit(0); } else if (strcmp(argv[1], "stack") == 0) { trace_stack(argc, argv); exit(0); } else if (strcmp(argv[1], "check-events") == 0) { const char *tracing; int ret; struct pevent *pevent = NULL; struct plugin_list *list = NULL; while ((c = getopt(argc-1, argv+1, "+hN")) >= 0) { switch (c) { case 'h': default: usage(argv); break; case 'N': tracecmd_disable_plugins = 1; break; } } tracing = tracecmd_get_tracing_dir(); if (!tracing) { printf("Can not find or mount tracing directory!\n" "Either tracing is not configured for this " "kernel\n" "or you do not have the proper permissions to " "mount the directory"); exit(EINVAL); } pevent = pevent_alloc(); if (!pevent) exit(EINVAL); list = tracecmd_load_plugins(pevent); ret = tracecmd_fill_local_events(tracing, pevent); if (ret || pevent->parsing_failures) ret = EINVAL; tracecmd_unload_plugins(list, pevent); pevent_free(pevent); exit(ret); } else if (strcmp(argv[1], "record") == 0 || strcmp(argv[1], "start") == 0 || strcmp(argv[1], "extract") == 0 || strcmp(argv[1], "stop") == 0 || strcmp(argv[1], "stream") == 0 || strcmp(argv[1], "profile") == 0 || strcmp(argv[1], "restart") == 0 || strcmp(argv[1], "reset") == 0) { trace_record(argc, argv); exit(0); } else if (strcmp(argv[1], "stat") == 0) { trace_stat(argc, argv); exit(0); } else if (strcmp(argv[1], "options") == 0) { show_plugin_options(); exit(0); } else if (strcmp(argv[1], "show") == 0) { const char *buffer = NULL; const char *file = "trace"; const char *cpu = NULL; struct buffer_instance *instance = &top_instance; char cpu_path[128]; char *path; int snap = 0; int pipe = 0; int show_name = 0; int option_index = 0; int stop = 0; static struct option long_options[] = { {"tracing_on", no_argument, NULL, OPT_tracing_on}, {"current_tracer", no_argument, NULL, OPT_current_tracer}, {"buffer_size", no_argument, NULL, OPT_buffer_size_kb}, {"buffer_total_size", no_argument, NULL, OPT_buffer_total_size_kb}, {"ftrace_filter", no_argument, NULL, OPT_ftrace_filter}, {"ftrace_notrace", no_argument, NULL, OPT_ftrace_notrace}, {"ftrace_pid", no_argument, NULL, OPT_ftrace_pid}, {"graph_function", no_argument, NULL, OPT_graph_function}, {"graph_notrace", no_argument, NULL, OPT_graph_notrace}, {"cpumask", no_argument, NULL, OPT_cpumask}, {"help", no_argument, NULL, '?'}, {NULL, 0, NULL, 0} }; while ((c = getopt_long(argc-1, argv+1, "B:c:fsp", long_options, &option_index)) >= 0) { switch (c) { case 'h': usage(argv); break; case 'B': if (buffer) die("Can only show one buffer at a time"); buffer = optarg; instance = create_instance(optarg); break; case 'c': if (cpu) die("Can only show one CPU at a time"); cpu = optarg; break; case 'f': show_name = 1; break; case 's': snap = 1; if (pipe) die("Can not have -s and -p together"); break; case 'p': pipe = 1; if (snap) die("Can not have -s and -p together"); break; case OPT_tracing_on: show_instance_file(instance, "tracing_on"); stop = 1; break; case OPT_current_tracer: show_instance_file(instance, "current_tracer"); stop = 1; break; case OPT_buffer_size_kb: show_instance_file(instance, "buffer_size_kb"); stop = 1; break; case OPT_buffer_total_size_kb: show_instance_file(instance, "buffer_total_size_kb"); stop = 1; break; case OPT_ftrace_filter: show_instance_file(instance, "set_ftrace_filter"); stop = 1; break; case OPT_ftrace_notrace: show_instance_file(instance, "set_ftrace_notrace"); stop = 1; break; case OPT_ftrace_pid: show_instance_file(instance, "set_ftrace_pid"); stop = 1; break; case OPT_graph_function: show_instance_file(instance, "set_graph_function"); stop = 1; break; case OPT_graph_notrace: show_instance_file(instance, "set_graph_notrace"); stop = 1; break; case OPT_cpumask: show_instance_file(instance, "tracing_cpumask"); stop = 1; break; default: usage(argv); } } if (stop) exit(0); if (pipe) file = "trace_pipe"; else if (snap) file = "snapshot"; if (cpu) { snprintf(cpu_path, 128, "per_cpu/cpu%d/%s", atoi(cpu), file); file = cpu_path; } if (buffer) { path = malloc_or_die(strlen(buffer) + strlen("instances//") + strlen(file) + 1); sprintf(path, "instances/%s/%s", buffer, file); file = path; } if (show_name) { char *name; name = tracecmd_get_tracing_file(file); printf("%s\n", name); tracecmd_put_tracing_file(name); } show_file(file); if (buffer) free(path); exit(0); } else if (strcmp(argv[1], "list") == 0) { int events = 0; int tracer = 0; int options = 0; int funcs = 0; int buffers = 0; int clocks = 0; int plug = 0; int plug_op = 0; int flags = 0; int show_all = 1; int i; const char *arg; const char *funcre = NULL; const char *eventre = NULL; for (i = 2; i < argc; i++) { arg = NULL; if (argv[i][0] == '-') { if (i < argc - 1) { if (argv[i+1][0] != '-') arg = argv[i+1]; } switch (argv[i][1]) { case 'h': usage(argv); break; case 'e': events = 1; eventre = arg; show_all = 0; break; case 'B': buffers = 1; show_all = 0; break; case 'C': clocks = 1; show_all = 0; break; case 'F': flags |= SHOW_EVENT_FORMAT; break; case 'R': flags |= SHOW_EVENT_TRIGGER; break; case 'l': flags |= SHOW_EVENT_FILTER; break; case 'p': case 't': tracer = 1; show_all = 0; break; case 'P': plug = 1; show_all = 0; break; case 'O': plug_op = 1; show_all = 0; break; case 'o': options = 1; show_all = 0; break; case 'f': funcs = 1; funcre = arg; show_all = 0; break; default: fprintf(stderr, "list: invalid option -- '%c'\n", argv[optind][1]); usage(argv); } } } if (events) show_events(eventre, flags); if (tracer) show_tracers(); if (options) show_options(); if (plug) show_plugins(); if (plug_op) show_plugin_options(); if (funcs) show_functions(funcre); if (buffers) show_buffers(); if (clocks) show_clocks(); if (show_all) { printf("events:\n"); show_events(NULL, 0); printf("\ntracers:\n"); show_tracers(); printf("\noptions:\n"); show_options(); } exit(0); } else if (strcmp(argv[1], "-h") == 0 || strcmp(argv[1], "help") == 0) { usage(argv); } else { fprintf(stderr, "unknown command: %s\n", argv[1]); usage(argv); } return 0; } trace-cmd-2.5.3/trace-cmd.h000066400000000000000000000276471246701203100154040ustar00rootroot00000000000000/* * Copyright (C) 2008, 2009, 2010 Red Hat Inc, Steven Rostedt * * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ * This program is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; * version 2.1 of the License (not later!) * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this program; if not, see * * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ */ #ifndef _TRACE_CMD_H #define _TRACE_CMD_H #include #include "event-utils.h" #include "event-parse.h" #define TRACECMD_ERR_MSK ((unsigned long)(-1) & ~((1UL << 14) - 1)) #define TRACECMD_ISERR(ptr) ((unsigned long)(ptr) > TRACECMD_ERR_MSK) #define TRACECMD_ERROR(ret) ((void *)((unsigned long)(ret) | TRACECMD_ERR_MSK)) #define TRACECMD_PTR2ERR(ptr) ((unisgned long)(ptr) & ~TRACECMD_ERR_MSK) void parse_cmdlines(struct pevent *pevent, char *file, int size); void parse_trace_clock(struct pevent *pevent, char *file, int size); void parse_proc_kallsyms(struct pevent *pevent, char *file, unsigned int size); void parse_ftrace_printk(struct pevent *pevent, char *file, unsigned int size); extern int tracecmd_disable_sys_plugins; extern int tracecmd_disable_plugins; struct plugin_list; struct plugin_list *tracecmd_load_plugins(struct pevent *pevent); void tracecmd_unload_plugins(struct plugin_list *list, struct pevent *pevent); char **tracecmd_event_systems(const char *tracing_dir); char **tracecmd_system_events(const char *tracing_dir, const char *system); struct pevent *tracecmd_local_events(const char *tracing_dir); int tracecmd_fill_local_events(const char *tracing_dir, struct pevent *pevent); char **tracecmd_local_plugins(const char *tracing_dir); char **tracecmd_add_list(char **list, const char *name, int len); void tracecmd_free_list(char **list); int *tracecmd_add_id(int *list, int id, int len); enum { RINGBUF_TYPE_PADDING = 29, RINGBUF_TYPE_TIME_EXTEND = 30, RINGBUF_TYPE_TIME_STAMP = 31, }; void tracecmd_record_ref(struct pevent_record *record); void free_record(struct pevent_record *record); struct tracecmd_input; struct tracecmd_output; struct tracecmd_recorder; static inline int tracecmd_host_bigendian(void) { unsigned char str[] = { 0x1, 0x2, 0x3, 0x4 }; unsigned int *ptr; ptr = (unsigned int *)str; return *ptr == 0x01020304; } /* tracecmd_get_tracing_dir must *not* be freed */ const char *tracecmd_get_tracing_dir(void); /* tracecmd_find_tracing_dir must be freed */ char *tracecmd_find_tracing_dir(void); /* --- Opening and Reading the trace.dat file --- */ enum { TRACECMD_OPTION_DONE, TRACECMD_OPTION_DATE, TRACECMD_OPTION_CPUSTAT, TRACECMD_OPTION_BUFFER, TRACECMD_OPTION_TRACECLOCK, TRACECMD_OPTION_UNAME, TRACECMD_OPTION_HOOK, }; enum { TRACECMD_FL_IGNORE_DATE = (1 << 0), TRACECMD_FL_BUFFER_INSTANCE = (1 << 1), }; struct tracecmd_ftrace { struct tracecmd_input *handle; struct event_format *fgraph_ret_event; int fgraph_ret_id; int long_size; }; struct tracecmd_input *tracecmd_alloc(const char *file); struct tracecmd_input *tracecmd_alloc_fd(int fd); struct tracecmd_input *tracecmd_open(const char *file); struct tracecmd_input *tracecmd_open_fd(int fd); void tracecmd_ref(struct tracecmd_input *handle); void tracecmd_close(struct tracecmd_input *handle); int tracecmd_read_headers(struct tracecmd_input *handle); int tracecmd_long_size(struct tracecmd_input *handle); int tracecmd_page_size(struct tracecmd_input *handle); int tracecmd_cpus(struct tracecmd_input *handle); int tracecmd_copy_headers(struct tracecmd_input *handle, int fd); void tracecmd_set_flag(struct tracecmd_input *handle, int flag); void tracecmd_clear_flag(struct tracecmd_input *handle, int flag); int tracecmd_make_pipe(struct tracecmd_input *handle, int cpu, int fd, int cpus); int tracecmd_buffer_instances(struct tracecmd_input *handle); const char *tracecmd_buffer_instance_name(struct tracecmd_input *handle, int indx); struct tracecmd_input *tracecmd_buffer_instance_handle(struct tracecmd_input *handle, int indx); int tracecmd_is_buffer_instance(struct tracecmd_input *handle); void tracecmd_print_events(struct tracecmd_input *handle, const char *regex); struct hook_list *tracecmd_hooks(struct tracecmd_input *handle); int tracecmd_init_data(struct tracecmd_input *handle); void tracecmd_print_stats(struct tracecmd_input *handle); void tracecmd_print_uname(struct tracecmd_input *handle); struct pevent_record * tracecmd_read_page_record(struct pevent *pevent, void *page, int size, struct pevent_record *last_record); struct pevent_record * tracecmd_peek_data(struct tracecmd_input *handle, int cpu); static inline struct pevent_record * tracecmd_peek_data_ref(struct tracecmd_input *handle, int cpu) { struct pevent_record *rec = tracecmd_peek_data(handle, cpu); if (rec) rec->ref_count++; return rec; } struct pevent_record * tracecmd_read_data(struct tracecmd_input *handle, int cpu); struct pevent_record * tracecmd_read_prev(struct tracecmd_input *handle, struct pevent_record *record); struct pevent_record * tracecmd_read_next_data(struct tracecmd_input *handle, int *rec_cpu); struct pevent_record * tracecmd_read_at(struct tracecmd_input *handle, unsigned long long offset, int *cpu); struct pevent_record * tracecmd_translate_data(struct tracecmd_input *handle, void *ptr, int size); struct pevent_record * tracecmd_read_cpu_first(struct tracecmd_input *handle, int cpu); struct pevent_record * tracecmd_read_cpu_last(struct tracecmd_input *handle, int cpu); int tracecmd_refresh_record(struct tracecmd_input *handle, struct pevent_record *record); int tracecmd_set_cpu_to_timestamp(struct tracecmd_input *handle, int cpu, unsigned long long ts); void tracecmd_set_all_cpus_to_timestamp(struct tracecmd_input *handle, unsigned long long time); int tracecmd_set_cursor(struct tracecmd_input *handle, int cpu, unsigned long long offset); unsigned long long tracecmd_get_cursor(struct tracecmd_input *handle, int cpu); int tracecmd_ftrace_overrides(struct tracecmd_input *handle, struct tracecmd_ftrace *finfo); struct pevent *tracecmd_get_pevent(struct tracecmd_input *handle); bool tracecmd_get_use_trace_clock(struct tracecmd_input *handle); char *tracecmd_get_tracing_file(const char *name); void tracecmd_put_tracing_file(char *name); int tracecmd_record_at_buffer_start(struct tracecmd_input *handle, struct pevent_record *record); #ifndef SWIG /* hack for function graph work around */ extern __thread struct tracecmd_input *tracecmd_curr_thread_handle; #endif /* --- Creating and Writing the trace.dat file --- */ struct tracecmd_event_list { struct tracecmd_event_list *next; const char *glob; }; struct tracecmd_option; struct tracecmd_output *tracecmd_create_file_latency(const char *output_file, int cpus); struct tracecmd_output *tracecmd_create_file(const char *output_file, int cpus, char * const *cpu_data_files); struct tracecmd_output * tracecmd_create_file_glob(const char *output_file, int cpus, char * const *cpu_data_files, struct tracecmd_event_list *event_globs); struct tracecmd_output * tracecmd_create_init_file_glob(const char *output_file, struct tracecmd_event_list *list); struct tracecmd_output *tracecmd_create_init_fd(int fd); struct tracecmd_output * tracecmd_create_init_fd_glob(int fd, struct tracecmd_event_list *list); struct tracecmd_output *tracecmd_create_init_file(const char *output_file); struct tracecmd_output *tracecmd_create_init_file_override(const char *output_file, const char *tracing_dir, const char *kallsyms); struct tracecmd_option *tracecmd_add_option(struct tracecmd_output *handle, unsigned short id, int size, const void *data); struct tracecmd_option *tracecmd_add_buffer_option(struct tracecmd_output *handle, const char *name); int tracecmd_update_option(struct tracecmd_output *handle, struct tracecmd_option *option, int size, const void *data); void tracecmd_output_close(struct tracecmd_output *handle); void tracecmd_output_free(struct tracecmd_output *handle); struct tracecmd_output *tracecmd_copy(struct tracecmd_input *ihandle, const char *file); int tracecmd_append_cpu_data(struct tracecmd_output *handle, int cpus, char * const *cpu_data_files); int tracecmd_append_buffer_cpu_data(struct tracecmd_output *handle, struct tracecmd_option *option, int cpus, char * const *cpu_data_files); int tracecmd_attach_cpu_data(char *file, int cpus, char * const *cpu_data_files); int tracecmd_attach_cpu_data_fd(int fd, int cpus, char * const *cpu_data_files); /* --- Reading the Fly Recorder Trace --- */ enum { TRACECMD_RECORD_NOSPLICE = (1 << 0), /* Use read instead of splice */ TRACECMD_RECORD_SNAPSHOT = (1 << 1), /* extract from snapshot */ TRACECMD_RECORD_BLOCK = (1 << 2), /* Block on splice write */ }; void tracecmd_free_recorder(struct tracecmd_recorder *recorder); struct tracecmd_recorder *tracecmd_create_recorder(const char *file, int cpu, unsigned flags); struct tracecmd_recorder *tracecmd_create_recorder_fd(int fd, int cpu, unsigned flags); struct tracecmd_recorder *tracecmd_create_recorder_maxkb(const char *file, int cpu, unsigned flags, int maxkb); struct tracecmd_recorder *tracecmd_create_buffer_recorder_fd(int fd, int cpu, unsigned flags, const char *buffer); struct tracecmd_recorder *tracecmd_create_buffer_recorder(const char *file, int cpu, unsigned flags, const char *buffer); struct tracecmd_recorder *tracecmd_create_buffer_recorder_maxkb(const char *file, int cpu, unsigned flags, const char *buffer, int maxkb); struct tracecmd_recorder *tracecmd_create_buffer_recorder_pipe(const char *file, int cpu, unsigned flags, const char *buffer, int *brass); int tracecmd_start_recording(struct tracecmd_recorder *recorder, unsigned long sleep); void tracecmd_stop_recording(struct tracecmd_recorder *recorder); void tracecmd_stat_cpu(struct trace_seq *s, int cpu); long tracecmd_flush_recording(struct tracecmd_recorder *recorder); /* --- Plugin handling --- */ extern struct plugin_option trace_ftrace_options[]; void trace_util_add_options(const char *name, struct plugin_option *options); void trace_util_remove_options(struct plugin_option *options); void trace_util_add_option(const char *name, const char *val); void trace_util_load_plugins(struct pevent *pevent, const char *suffix, void (*load_plugin)(struct pevent *pevent, const char *path, const char *name, void *data), void *data); struct plugin_option *trace_util_read_plugin_options(void); void trace_util_free_options(struct plugin_option *options); char **trace_util_find_plugin_files(const char *suffix); void trace_util_free_plugin_files(char **files); void trace_util_print_plugins(struct trace_seq *s, const char *prefix, const char *suffix, const struct plugin_list *list); void trace_util_print_plugin_options(struct trace_seq *s); char **trace_util_list_plugin_options(void); void trace_util_free_plugin_options_list(char **list); const char *trace_util_plugin_option_value(const char *name); /* Used for trace-cmd list */ void tracecmd_ftrace_load_options(void); /* event hooks */ struct hook_list { struct hook_list *next; struct buffer_instance *instance; const char *hook; char *str; char *start_system; char *start_event; char *start_match; char *end_system; char *end_event; char *end_match; char *pid; int migrate; int global; int stack; }; struct hook_list *tracecmd_create_event_hook(const char *arg); void tracecmd_free_hooks(struct hook_list *hooks); /* --- Hack! --- */ int tracecmd_blk_hack(struct tracecmd_input *handle); #endif /* _TRACE_CMD_H */ trace-cmd-2.5.3/trace-compat.c000066400000000000000000000062101246701203100160760ustar00rootroot00000000000000/* * Copyright (C) 2009, 2010 Red Hat Inc, Steven Rostedt * * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ * This program is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; * version 2.1 of the License (not later!) * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this program; if not, see * * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ */ #include "trace-compat.h" #include "trace-gui.h" #include "trace-cmd.h" #include #if GTK_VERSION < CALC_GTK_VERSION(2,18,0) #warning Using compat functions for older GTK library. This should work fine #warning but when you get a chance, please upgrade your GTK to at least 2.18 void gtk_cell_renderer_get_padding(GtkCellRenderer *cell, gint *xpad, gint *ypad) { if (xpad) *xpad = cell->xpad; if (ypad) *ypad = cell->ypad; } #endif /* version < 2.18.0 */ #if GTK_VERSION < CALC_GTK_VERSION(2,16,0) const gchar *gtk_menu_item_get_label(GtkMenuItem *menu_item) { g_return_val_if_fail(GTK_IS_MENU_ITEM(menu_item), NULL); if (GTK_IS_LABEL(GTK_BIN(menu_item)->child)) return gtk_label_get_label(GTK_LABEL(GTK_BIN(menu_item)->child)); return NULL; } void gtk_menu_item_set_label(GtkMenuItem *menu_item, const gchar *label) { g_return_if_fail(GTK_IS_MENU_ITEM(menu_item)); if (GTK_IS_LABEL(GTK_BIN(menu_item)->child)) { gtk_label_set_label(GTK_LABEL(GTK_BIN(menu_item)->child), label ? label : ""); } } #endif /* version < 2.18.0 */ #if GTK_VERSION < CALC_GTK_VERSION(2,14,0) gdouble gtk_adjustment_get_page_size(GtkAdjustment *adj) { return adj->page_size; } gdouble gtk_adjustment_get_upper(GtkAdjustment *adj) { return adj->upper; } gdouble gtk_adjustment_get_lower(GtkAdjustment *adj) { return adj->lower; } gboolean gtk_show_uri(GdkScreen *screen, const gchar *uri, guint32 timestamp, GError **error) { return FALSE; } void g_string_vprintf(GString *string, const gchar *format, va_list args) { char buf[1024]; gint len; len = vsnprintf(buf, 1024, format, args); if (len >= 1024) die("compat g_string_vprintf can not process length of %d\n", len); g_string_printf(string, "%s", buf); } #endif /* version < 2.14.0 */ #if GTK_VERSION < CALC_GTK_VERSION(2,12,0) GtkWidget *gtk_tree_view_column_get_tree_view(GtkTreeViewColumn *col) { return col->tree_view; } void gtk_widget_set_tooltip_text(GtkWidget *widget, const gchar *text) { static GtkTooltips *tooltips; /* Only works for widgets with windows, sorry */ if (GTK_WIDGET_NO_WINDOW(widget)) return; if (!tooltips) { tooltips = gtk_tooltips_new(); gtk_tooltips_enable(tooltips); } gtk_tooltips_set_tip(GTK_TOOLTIPS(tooltips), widget, text, text); } #endif /* version < 2.12.0 */ trace-cmd-2.5.3/trace-compat.h000066400000000000000000000040541246701203100161070ustar00rootroot00000000000000/* * Copyright (C) 2009, 2010 Red Hat Inc, Steven Rostedt * * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ * This program is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; * version 2.1 of the License (not later!) * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this program; if not, see * * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ */ #ifndef _TRACE_COMPAT_H #define _TRACE_COMPAT_H #include #include #define CALC_GTK_VERSION(maj, min, ext) ((maj << 16) + (min << 8) + ext) #if GTK_VERSION < CALC_GTK_VERSION(2,18,0) void gtk_cell_renderer_get_padding(GtkCellRenderer *cell, gint *xpad, gint *ypad); #endif /* version < 2.18.0 */ #if GTK_VERSION < CALC_GTK_VERSION(2,16,0) const gchar *gtk_menu_item_get_label(GtkMenuItem *menu_item); void gtk_menu_item_set_label(GtkMenuItem *menu_item, const gchar *label); #endif /* version < 2.16.0 */ #if GTK_VERSION < CALC_GTK_VERSION(2,14,0) gdouble gtk_adjustment_get_page_size(GtkAdjustment *adj); gdouble gtk_adjustment_get_upper(GtkAdjustment *adj); gdouble gtk_adjustment_get_lower(GtkAdjustment *adj); gboolean gtk_show_uri(GdkScreen *screen, const gchar *uri, guint32 timestamp, GError **error); void g_string_vprintf(GString *string, const gchar *format, va_list args); #endif /* version < 2.14.0 */ #if GTK_VERSION < CALC_GTK_VERSION(2,12,0) GtkWidget *gtk_tree_view_column_get_tree_view(GtkTreeViewColumn *col); void gtk_widget_set_tooltip_text(GtkWidget *widget, const gchar *text); #endif /* version < 2.12.0 */ #endif /* _TRACE_COMPAT_H */ trace-cmd-2.5.3/trace-dialog.c000066400000000000000000000313101246701203100160510ustar00rootroot00000000000000/* * Copyright (C) 2009, 2010 Red Hat Inc, Steven Rostedt * * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; version 2 of the License (not later!) * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; if not, see * * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ */ #include #include #include #include #include #include #include #include "trace-compat.h" #include "trace-cmd.h" #include "trace-gui.h" #define DIALOG_WIDTH 500 #define DIALOG_HEIGHT 550 static GtkWidget *statusbar; static GtkWidget *statuspix; static GString *statusstr; static GtkWidget *parent_window; static void (*alt_warning)(const char *fmt, va_list ap); void vpr_stat(const char *fmt, va_list ap) { GString *str; if (!statusstr) { statusstr = g_string_new(""); if (!statusstr) die("Allocating status string"); } str = g_string_new(""); g_string_vprintf(str, fmt, ap); g_string_append_printf(statusstr, "%s\n", str->str); if (statusbar) { gtk_statusbar_push(GTK_STATUSBAR(statusbar), 1, str->str); gtk_widget_show(statuspix); } g_string_free(str, TRUE); } void pr_stat(const char *fmt, ...) { va_list ap; va_start(ap, fmt); vpr_stat(fmt, ap); va_end(ap); } /** * trace_dialog_register_window - register window for warning dialogs * @window: parent window to use for other dialogs * * The warning messages do not have a way to pass the window to * the function, since these functions are also used by the command * line interface. This allows an application to give the warning * messages a window to use. */ void trace_dialog_register_window(GtkWidget *window) { parent_window = window; } static struct cursor_stack { struct cursor_stack *next; GdkCursor *cursor; } *cursor_stack; static void push_cursor(GdkCursor *cursor) { struct cursor_stack *item; item = malloc_or_die(sizeof(item)); item->next = cursor_stack; cursor_stack = item; item->cursor = cursor; } static GdkCursor *pop_cursor(void) { struct cursor_stack *item; GdkCursor *cursor; item = cursor_stack; if (!item) return NULL; cursor_stack = item->next; cursor = item->cursor; free(item); return cursor; } void trace_set_cursor(GdkCursorType type) { GdkWindow *window; GdkCursor *cursor; if (!parent_window) return; window = GTK_WIDGET(parent_window)->window; /* save the previous cursor */ cursor = gdk_window_get_cursor(window); push_cursor(cursor); cursor = gdk_cursor_new(type); if (!cursor) die("Can't create cursor"); gdk_window_set_cursor(window, cursor); } void trace_put_cursor(void) { GdkWindow *window; GdkCursor *cursor; if (!parent_window) return; window = GTK_WIDGET(parent_window)->window; cursor = gdk_window_get_cursor(window); if (cursor) gdk_cursor_unref(cursor); cursor = pop_cursor(); gdk_window_set_cursor(window, cursor); } void trace_freeze_all(void) { if (parent_window) gtk_widget_set_sensitive(GTK_WIDGET(parent_window), FALSE); } void trace_unfreeze_all(void) { if (parent_window) gtk_widget_set_sensitive(GTK_WIDGET(parent_window), TRUE); } /** * trace_dialog_register_alt_warning - register an alternate function for warning() * @alt: the function to be called instead of warning. * * Add an alternate warning function to be called instead of a popup. * To go back to the popup, simply call this again with NULL. */ void trace_dialog_register_alt_warning(void (*alt)(const char *fmt, va_list ap)) { alt_warning = alt; } void warning(const char *fmt, ...) { GString *str; va_list ap; int err; if (alt_warning) { va_start(ap, fmt); alt_warning(fmt, ap); va_end(ap); return; } if (!parent_window) { va_start(ap, fmt); __vwarning(fmt, ap); va_end(ap); return; } err = errno; errno = 0; str = g_string_new(""); va_start(ap, fmt); g_string_vprintf(str, fmt, ap); va_end(ap); g_string_append(str, "\n"); if (errno) { g_string_prepend(str, "\n"); g_string_prepend(str, strerror(errno)); } errno = 0; trace_dialog(GTK_WINDOW(parent_window), TRACE_GUI_WARNING, str->str); g_string_free(str, TRUE); } static void status_display_clicked (gpointer data) { GtkWidget *dialog; GtkWidget *scrollwin; GtkWidget *viewport; GtkWidget *textview; GtkTextBuffer *buffer; dialog = gtk_dialog_new_with_buttons("Status", NULL, GTK_DIALOG_MODAL, "OK", GTK_RESPONSE_ACCEPT, NULL); scrollwin = gtk_scrolled_window_new(NULL, NULL); gtk_scrolled_window_set_policy(GTK_SCROLLED_WINDOW(scrollwin), GTK_POLICY_AUTOMATIC, GTK_POLICY_AUTOMATIC); gtk_box_pack_start(GTK_BOX(GTK_DIALOG(dialog)->vbox), scrollwin, TRUE, TRUE, 0); gtk_widget_show(scrollwin); viewport = gtk_viewport_new(NULL, NULL); gtk_widget_show(viewport); gtk_container_add(GTK_CONTAINER(scrollwin), viewport); textview = gtk_text_view_new(); buffer = gtk_text_view_get_buffer(GTK_TEXT_VIEW(textview)); gtk_text_buffer_set_text(buffer, statusstr->str, -1); gtk_container_add(GTK_CONTAINER(viewport), textview); gtk_widget_show(textview); gtk_widget_set_size_request(GTK_WIDGET(dialog), DIALOG_WIDTH, DIALOG_HEIGHT); gtk_dialog_run(GTK_DIALOG(dialog)); gtk_widget_destroy(dialog); } static gboolean do_status_popup(GtkWidget *widget, GdkEventButton *event, gpointer data) { static GtkWidget *menu; static GtkWidget *menu_status_display; if (!menu) { menu = gtk_menu_new(); menu_status_display = gtk_menu_item_new_with_label("Display Status"); gtk_widget_show(menu_status_display); gtk_menu_shell_append(GTK_MENU_SHELL (menu), menu_status_display); g_signal_connect_swapped (G_OBJECT (menu_status_display), "activate", G_CALLBACK (status_display_clicked), data); } gtk_menu_popup(GTK_MENU(menu), NULL, NULL, NULL, NULL, 3, gtk_get_current_event_time()); return TRUE; } static gboolean button_press_status(GtkWidget *widget, GdkEventButton *event, gpointer data) { if (event->button == 1) return do_status_popup(widget, event, data); return FALSE; } GtkWidget *trace_status_bar_new(void) { GtkWidget *eventbox; statusbar = gtk_statusbar_new(); statuspix = gtk_image_new_from_stock(GTK_STOCK_INFO, GTK_ICON_SIZE_SMALL_TOOLBAR); eventbox = gtk_event_box_new(); gtk_container_add(GTK_CONTAINER(eventbox), statuspix); gtk_widget_show(eventbox); gtk_box_pack_end(GTK_BOX(statusbar), eventbox, FALSE, FALSE, 0); if (statusstr) gtk_widget_show(statuspix); gtk_signal_connect(GTK_OBJECT(eventbox), "button_press_event", (GtkSignalFunc) button_press_status, NULL); return statusbar; } void trace_show_help(GtkWidget *window, const gchar *link, GError **error) { #if GTK_VERSION < CALC_GTK_VERSION(2,14,0) trace_dialog(GTK_WINDOW(window), TRACE_GUI_WARNING, "This version of GTK+ does not implement gtk_show_uri.\n" "Please upgrade your GTK and recompile"); #else gtk_show_uri(gtk_widget_get_screen(GTK_WIDGET(window)), link, GDK_CURRENT_TIME, error); #endif } GtkResponseType trace_dialog(GtkWindow *parent, enum trace_dialog_type type, gchar *message, ...) { GtkWidget *dialog; GtkMessageType mtype; GtkButtonsType btype = GTK_BUTTONS_CLOSE; gchar *str; va_list ap; int result; if (!parent) parent = GTK_WINDOW(parent_window); switch (type) { case TRACE_GUI_INFO: mtype = GTK_MESSAGE_INFO; break; case TRACE_GUI_WARNING: mtype = GTK_MESSAGE_WARNING; break; case TRACE_GUI_ERROR: mtype = GTK_MESSAGE_ERROR; break; case TRACE_GUI_ASK: mtype = GTK_MESSAGE_WARNING; btype = GTK_BUTTONS_YES_NO; break; } va_start(ap, message); str = g_strdup_vprintf(message, ap); va_end(ap); dialog = gtk_message_dialog_new(parent, GTK_DIALOG_DESTROY_WITH_PARENT, mtype, btype, "%s", str); g_free(str); result = gtk_dialog_run(GTK_DIALOG(dialog)); gtk_widget_destroy(dialog); return result; } /** * trace_get_file_dialog - pop up a file dialog to get a file * @title: the title of the dialog * @open: the text for the "open" button (NULL for default) * @ftype: What extension the dialog should default filter on. * @warn: if the file exists, warn and let them choose again. * * Returns: the filename if it should be used. NULL otherwise. * The filename needs to be freed with g_free(). */ gchar *trace_get_file_dialog_filter(const gchar *title, const char *open, enum trace_dialog_filter ftype, gboolean warn) { struct stat st; GtkWidget *dialog; GtkResponseType ret; GtkFileFilter *filter; GtkFileFilter *setfilter; gchar *filename = NULL; gchar *ext = NULL; if (!open) open = GTK_STOCK_OPEN; dialog = gtk_file_chooser_dialog_new(title, NULL, GTK_FILE_CHOOSER_ACTION_OPEN, GTK_STOCK_CANCEL, GTK_RESPONSE_CANCEL, open, GTK_RESPONSE_ACCEPT, NULL); setfilter = filter = gtk_file_filter_new(); gtk_file_filter_set_name(filter, "All Files"); gtk_file_filter_add_pattern(filter, "*"); gtk_file_chooser_add_filter(GTK_FILE_CHOOSER(dialog), filter); filter = gtk_file_filter_new(); gtk_file_filter_set_name(filter, "trace-cmd .dat files"); gtk_file_filter_add_pattern(filter, "*.dat"); gtk_file_chooser_add_filter(GTK_FILE_CHOOSER(dialog), filter); if (ftype == TRACE_DIALOG_FILTER_DATA) { setfilter = filter; ext = ".dat"; } filter = gtk_file_filter_new(); gtk_file_filter_set_name(filter, "KernelShark filter files"); gtk_file_filter_add_pattern(filter, "*.ksf"); gtk_file_chooser_add_filter(GTK_FILE_CHOOSER(dialog), filter); if (ftype == TRACE_DIALOG_FILTER_FILTER) { setfilter = filter; ext = ".ksf"; } filter = gtk_file_filter_new(); gtk_file_filter_set_name(filter, "KernelShark setting files"); gtk_file_filter_add_pattern(filter, "*.kss"); gtk_file_chooser_add_filter(GTK_FILE_CHOOSER(dialog), filter); if (ftype == TRACE_DIALOG_FILTER_SETTING) { setfilter = filter; ext = ".kss"; } gtk_file_chooser_set_filter(GTK_FILE_CHOOSER(dialog), setfilter); again: ret = gtk_dialog_run(GTK_DIALOG(dialog)); if (ret == GTK_RESPONSE_ACCEPT) { filename = gtk_file_chooser_get_filename(GTK_FILE_CHOOSER(dialog)); if (filename && warn) { if (ext) { int len = strlen(filename); gchar *tmp; /* Add extension if not already there */ if (strcmp(filename + (len - 4), ext) != 0) { tmp = filename; filename = g_strdup_printf("%s%s", tmp, ext); g_free(tmp); } } if (stat(filename, &st) >= 0) { ret = trace_dialog(GTK_WINDOW(dialog), TRACE_GUI_ASK, "The file '%s' already exists.\n" "Are you sure you want to replace it", filename); if (ret == GTK_RESPONSE_NO) { g_free(filename); filename = NULL; goto again; } } } } gtk_widget_destroy(dialog); return filename; } gchar *trace_get_file_dialog(const gchar *title, const char *open, gboolean warn) { return trace_get_file_dialog_filter(title, open, TRACE_DIALOG_FILTER_NONE, warn); } /** * trace_create_combo_box - helper function to create a label and combo box * @hbox: The hbox to add the label and combo box to * @text: The text of the label * @combo_model_create: The function used to create the combo model * @data: data to pass to the combo_model_create. * * If no @hbox is given, the @text is ignored, and only the combo box * is created. * * Returns the combo box in the hbox. */ GtkWidget * trace_create_combo_box(GtkWidget *hbox, const gchar *text, GtkTreeModel *(*combo_model_create)(gpointer data), gpointer data) { GtkCellRenderer *renderer; GtkTreeModel *model; GtkWidget *label; GtkWidget *combo; if (hbox) { label = gtk_label_new(text); gtk_box_pack_start(GTK_BOX(hbox), label, FALSE, FALSE, 0); gtk_widget_show(label); } /* --- Set up the selection combo box --- */ model = combo_model_create(data); renderer = gtk_cell_renderer_text_new(); combo = gtk_combo_box_new_with_model(model); if (hbox) gtk_box_pack_start(GTK_BOX(hbox), combo, FALSE, FALSE, 0); gtk_widget_show(combo); /* Free model with combobox */ g_object_unref(model); gtk_cell_layout_pack_start(GTK_CELL_LAYOUT(combo), renderer, TRUE); gtk_cell_layout_set_attributes(GTK_CELL_LAYOUT(combo), renderer, "text", 0, NULL); gtk_combo_box_set_active(GTK_COMBO_BOX(combo), 0); return combo; } trace-cmd-2.5.3/trace-filter-hash.c000066400000000000000000000105241246701203100170240ustar00rootroot00000000000000/* * Copyright (C) 2009, Steven Rostedt * * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; version 2 of the License (not later!) * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; if not, see * * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ */ #include #include #include #include #include "trace-filter-hash.h" #define FILTER_TASK_HASH_SIZE 256 struct filter_task_item * filter_task_find_pid(struct filter_task *hash, gint pid) { gint key = trace_hash(pid) % FILTER_TASK_HASH_SIZE; struct filter_task_item *task = hash->hash[key]; while (task) { if (task->pid == pid) break; task = task->next; } return task; } void filter_task_add_pid(struct filter_task *hash, gint pid) { gint key = trace_hash(pid) % FILTER_TASK_HASH_SIZE; struct filter_task_item *task; task = g_new0(typeof(*task), 1); g_assert(task); task->pid = pid; task->next = hash->hash[key]; hash->hash[key] = task; hash->count++; } void filter_task_remove_pid(struct filter_task *hash, gint pid) { gint key = trace_hash(pid) % FILTER_TASK_HASH_SIZE; struct filter_task_item **next = &hash->hash[key]; struct filter_task_item *task; while (*next) { if ((*next)->pid == pid) break; next = &(*next)->next; } if (!*next) return; g_assert(hash->count); hash->count--; task = *next; *next = task->next; g_free(task); } void filter_task_clear(struct filter_task *hash) { struct filter_task_item *task, *next;; gint i; for (i = 0; i < FILTER_TASK_HASH_SIZE; i++) { next = hash->hash[i]; if (!next) continue; hash->hash[i] = NULL; while (next) { task = next; next = task->next; g_free(task); } } hash->count = 0; } struct filter_task *filter_task_hash_alloc(void) { struct filter_task *hash; hash = g_new0(typeof(*hash), 1); g_assert(hash); hash->hash = g_new0(typeof(*hash->hash), FILTER_TASK_HASH_SIZE); return hash; } void filter_task_hash_free(struct filter_task *hash) { if (!hash) return; filter_task_clear(hash); g_free(hash->hash); g_free(hash); } struct filter_task *filter_task_hash_copy(struct filter_task *hash) { struct filter_task *new_hash; struct filter_task_item *task, **ptask; gint i; if (!hash) return NULL; new_hash = filter_task_hash_alloc(); g_assert(new_hash); for (i = 0; i < FILTER_TASK_HASH_SIZE; i++) { task = hash->hash[i]; if (!task) continue; ptask = &new_hash->hash[i]; while (task) { *ptask = g_new0(typeof(*task), 1); g_assert(*ptask); **ptask = *task; ptask = &(*ptask)->next; task = task->next; } } new_hash->count = hash->count; return new_hash; } int *filter_task_pids(struct filter_task *hash) { struct filter_task_item *task; int *pids; int count = 0; int i; if (!hash->count) return NULL; pids = malloc(sizeof(*pids) * (hash->count + 1)); if (!pids) return NULL; for (i = 0; i < FILTER_TASK_HASH_SIZE; i++) { task = hash->hash[i]; while (task) { pids[count++] = task->pid; task = task->next; } } pids[count] = -1; return pids; } /** * filter_task_compare - compare two task hashs to see if they are equal * @hash1: one hash to compare * @hash2: another hash to compare to @hash1 * * Returns 1 if the two hashes are the same, 0 otherwise. */ int filter_task_compare(struct filter_task *hash1, struct filter_task *hash2) { int *pids; int ret = 0; int i; /* If counts don't match, then they obviously are not the same */ if (hash1->count != hash2->count) return 0; /* If both hashes are empty, they are the same */ if (!hash1->count && !hash2->count) return 1; /* Now compare the pids of one hash with the other */ pids = filter_task_pids(hash1); for (i = 0; pids[i] >= 0; i++) { if (!filter_task_find_pid(hash2, pids[i])) break; } if (pids[i] == -1) ret = 1; free(pids); return ret; } trace-cmd-2.5.3/trace-filter-hash.h000066400000000000000000000034071246701203100170330ustar00rootroot00000000000000/* * Copyright (C) 2009, 2010 Red Hat Inc, Steven Rostedt * * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; version 2 of the License (not later!) * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; if not, see * * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ */ #ifndef _TRACE_FILTER_HASH_H #define _TRACE_FILTER_HASH_H #include #include "trace-hash-local.h" struct filter_task_item { struct filter_task_item *next; gint pid; }; struct filter_task { struct filter_task_item **hash; gint count; }; struct filter_task_item * filter_task_find_pid(struct filter_task *hash, gint pid); void filter_task_add_pid(struct filter_task *hash, gint pid); void filter_task_remove_pid(struct filter_task *hash, gint pid); void filter_task_clear(struct filter_task *hash); struct filter_task *filter_task_hash_alloc(void); void filter_task_hash_free(struct filter_task *hash); struct filter_task *filter_task_hash_copy(struct filter_task *hash); int *filter_task_pids(struct filter_task *hash); int filter_task_compare(struct filter_task *hash1, struct filter_task *hash2); static inline gint filter_task_count(struct filter_task *hash) { return hash->count; } #endif /* _TRACE_FILTER_HASH_H */ trace-cmd-2.5.3/trace-filter.c000066400000000000000000001517651246701203100161200ustar00rootroot00000000000000/* * Copyright (C) 2009, 2010 Red Hat Inc, Steven Rostedt * * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; version 2 of the License (not later!) * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; if not, see * * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ */ #include #include #include #include #include "trace-cmd.h" #include "trace-local.h" #include "trace-view-store.h" #include "trace-view.h" #include "trace-gui.h" #include "cpu.h" #include "event-utils.h" #include "list.h" #define DIALOG_WIDTH 400 #define DIALOG_HEIGHT 600 #define TEXT_DIALOG_WIDTH 600 #define TEXT_DIALOG_HEIGHT 400 int str_cmp(const void *a, const void *b) { char * const * sa = a; char * const * sb = b; return strcmp(*sa, *sb); } int id_cmp(const void *a, const void *b) { const gint *ia = a; const gint *ib = b; if (*ia > *ib) return 1; if (*ia < *ib) return -1; return 0; } /** * trace_array_add - allocate and add an int to an array. * @array: address of array to allocate * @count: address of the current count of array data * @val: the value to append to the array. * * The first call to this, @array should be uninitialized * and @count should be zero. @array will be malloced and * val will be added to it. If count is greater than zero, * then array will be realloced, and val will be appened * to it. * * This also always ends the array with -1, so the values are * assumed to always be positive. * * @array must be freed with free(). */ void trace_array_add(gint **array, gint *count, gint val) { if (*count) *array = realloc(*array, sizeof(val) * (*count + 2)); else *array = malloc(sizeof(val) * 2); (*array)[(*count)++] = val; (*array)[*count] = -1; } /* --- event info box --- */ struct event_combo_info { struct pevent *pevent; GtkWidget *event_combo; GtkWidget *op_combo; GtkWidget *field_combo; GtkWidget *entry; }; static GtkTreeModel *create_event_combo_model(gpointer data) { struct pevent *pevent = data; GtkTreeStore *tree; GtkTreeIter sys_iter; GtkTreeIter iter; struct event_format **events; struct event_format *event; const char *last_sys = NULL; int i; events = pevent_list_events(pevent, EVENT_SORT_SYSTEM); if (!events) return NULL; tree = gtk_tree_store_new(1, G_TYPE_STRING); for (i = 0; events[i]; i++) { event = events[i]; if (!last_sys || strcmp(last_sys, event->system) != 0) { last_sys = event->system; gtk_tree_store_append(tree, &sys_iter, NULL); gtk_tree_store_set(tree, &sys_iter, 0, last_sys, -1); } gtk_tree_store_append(tree, &iter, &sys_iter); gtk_tree_store_set(tree, &iter, 0, event->name, -1); } return GTK_TREE_MODEL(tree); } static GtkTreeModel *create_op_combo_model(gpointer data) { GtkListStore *list; GtkTreeIter iter; int i; const gchar *ops[] = {":", ",", "==", "!=", "<", ">", "<=", ">=", "=~", "!~", "!", "(", ")", "+", "-", "*", "/", "<<", ">>", "&&", "||", "&", "|", NULL}; list = gtk_list_store_new(1, G_TYPE_STRING); for (i = 0; ops[i]; i++) { gtk_list_store_append(list, &iter); gtk_list_store_set(list, &iter, 0, ops[i], -1); } return GTK_TREE_MODEL(list); } static GtkTreeModel *create_field_combo_model(gpointer data) { struct pevent *pevent = data; GtkListStore *list; GtkTreeIter iter; struct event_format **events; struct format_field **fields; struct format_field *field; int i; events = pevent_list_events(pevent, EVENT_SORT_SYSTEM); if (!events) return NULL; list = gtk_list_store_new(1, G_TYPE_STRING); /* use any event for common fields */ fields = pevent_event_common_fields(events[0]); for (i = 0; fields[i]; i++) { field = fields[i]; gtk_list_store_append(list, &iter); gtk_list_store_set(list, &iter, 0, field->name, -1); } free(fields); return GTK_TREE_MODEL(list); } static void update_field_combo(struct pevent *pevent, GtkWidget *combo, const char *system, const char *event_name) { struct event_format **events; struct event_format *event; struct format_field **fields; struct format_field *field; GtkTreeModel *model; GtkListStore *list; GtkTreeIter iter; int i; model = gtk_combo_box_get_model(GTK_COMBO_BOX(combo)); if (!model) return; if (!gtk_tree_model_get_iter_first(model, &iter)) return; if (event_name) { event = pevent_find_event_by_name(pevent, system, event_name); if (!event) return; } else { /* use any event */ events = pevent_list_events(pevent, EVENT_SORT_SYSTEM); if (!events) return; event = events[0]; } /* Remove all the objects and reset it */ g_object_ref(model); gtk_combo_box_set_model(GTK_COMBO_BOX(combo), NULL); list = GTK_LIST_STORE(model); while (gtk_list_store_remove(list, &iter)) ; /* always load the common fields first */ fields = pevent_event_common_fields(event); for (i = 0; fields[i]; i++) { field = fields[i]; gtk_list_store_append(list, &iter); gtk_list_store_set(list, &iter, 0, field->name, -1); } free(fields); /* Now add event specific events */ if (event_name) { fields = pevent_event_fields(event); for (i = 0; fields[i]; i++) { field = fields[i]; gtk_list_store_append(list, &iter); gtk_list_store_set(list, &iter, 0, field->name, -1); } free(fields); } gtk_combo_box_set_model(GTK_COMBO_BOX(combo), model); g_object_unref(model); if (!gtk_tree_model_get_iter_first(model, &iter)) return; gtk_combo_box_set_active_iter(GTK_COMBO_BOX(combo), &iter); } static void event_combo_changed(GtkComboBox *combo, gpointer data) { struct event_combo_info *info = data; GtkWidget *field_combo = info->field_combo; GtkTreeIter parent_iter; GtkTreeIter iter; GtkTreeModel *model; GtkTreePath *path; gchar *system_name = NULL; gchar *event_name = NULL; gint depth; model = gtk_combo_box_get_model(combo); if (!model) return; if (!gtk_combo_box_get_active_iter(combo, &iter)) return; path = gtk_tree_model_get_path(model, &iter); if (!path) return; depth = gtk_tree_path_get_depth(path); if (depth > 1) { gtk_tree_model_get(model, &iter, 0, &event_name, -1); gtk_tree_model_iter_parent(model, &parent_iter, &iter); gtk_tree_model_get(model, &parent_iter, 0, &system_name, -1); } else gtk_tree_model_get(model, &iter, 0, &system_name, -1); update_field_combo(info->pevent, field_combo, system_name, event_name); g_free(system_name); g_free(event_name); gtk_tree_path_free(path); } static void insert_combo_text(struct event_combo_info *info, GtkComboBox *combo) { GtkTreeModel *model; GtkTreeIter iter; GtkWidget *entry; gchar *text; gint pos; model = gtk_combo_box_get_model(combo); if (!model) return; if (!gtk_combo_box_get_active_iter(combo, &iter)) return; gtk_tree_model_get(model, &iter, 0, &text, -1); entry = info->entry; pos = gtk_editable_get_position(GTK_EDITABLE(entry)); gtk_editable_insert_text(GTK_EDITABLE(entry), text, strlen(text), &pos); gtk_editable_set_position(GTK_EDITABLE(entry), pos); gtk_editable_insert_text(GTK_EDITABLE(entry), " ", 1, &pos); gtk_editable_set_position(GTK_EDITABLE(entry), pos); g_free(text); } static void event_insert_pressed(GtkButton *button, gpointer data) { struct event_combo_info *info = data; insert_combo_text(info, GTK_COMBO_BOX(info->event_combo)); } static void op_insert_pressed(GtkButton *button, gpointer data) { struct event_combo_info *info = data; insert_combo_text(info, GTK_COMBO_BOX(info->op_combo)); } static void field_insert_pressed(GtkButton *button, gpointer data) { struct event_combo_info *info = data; insert_combo_text(info, GTK_COMBO_BOX(info->field_combo)); } static GtkWidget * create_combo_box(struct event_combo_info *info, GtkWidget *hbox, const gchar *text, GtkTreeModel *(*combo_model_create)(gpointer data), void (*insert_pressed)(GtkButton *button, gpointer data)) { GtkWidget *hbox2; GtkWidget *combo; GtkWidget *button; hbox2 = gtk_hbox_new(FALSE, 0); gtk_box_pack_start(GTK_BOX(hbox), hbox2, TRUE, TRUE, 0); gtk_widget_show(hbox2); combo = trace_create_combo_box(hbox, text, combo_model_create, info->pevent); /* --- add insert button --- */ button = gtk_button_new_with_label("Insert"); gtk_box_pack_start(GTK_BOX(hbox2), button, FALSE, FALSE, 0); gtk_widget_show(button); g_signal_connect (button, "pressed", G_CALLBACK (insert_pressed), (gpointer) info); return combo; } static GtkWidget *event_info_box(struct event_combo_info *info) { GtkWidget *hbox; GtkWidget *event_combo; GtkWidget *op_combo; GtkWidget *field_combo; hbox = gtk_hbox_new(FALSE, 0); event_combo = create_combo_box(info, hbox, "Event:", create_event_combo_model, event_insert_pressed); op_combo = create_combo_box(info, hbox, "Op:", create_op_combo_model, op_insert_pressed); field_combo = create_combo_box(info, hbox, "Field:", create_field_combo_model, field_insert_pressed); g_signal_connect (event_combo, "changed", G_CALLBACK (event_combo_changed), (gpointer) info); info->event_combo = event_combo; info->op_combo = op_combo; info->field_combo = field_combo; return hbox; } /* --- advance filter --- */ enum { ADV_COL_DELETE, ADV_COL_EVENT, ADV_COL_FILTER, ADV_COL_ID, NUM_ADV_FILTER_COLS, }; static gint *get_event_ids(GtkTreeView *treeview) { GtkTreeModel *model; GtkTreeIter iter; gboolean active; gint *ids = NULL; gint id; int count = 0; model = gtk_tree_view_get_model(GTK_TREE_VIEW(treeview)); if (!model) return NULL; if (!gtk_tree_model_iter_children(model, &iter, NULL)) return NULL; for (;;) { gtk_tree_model_get(GTK_TREE_MODEL(model), &iter, ADV_COL_DELETE, &active, ADV_COL_ID, &id, -1); if (active) trace_array_add(&ids, &count, id); if (!gtk_tree_model_iter_next(model, &iter)) break; } return ids; } static GtkTreeModel * create_tree_filter_model(struct pevent *pevent, struct event_filter *event_filter) { GtkTreeStore *treestore; GtkTreeIter iter_events; struct event_format **events; char *str; gint i; treestore = gtk_tree_store_new(NUM_ADV_FILTER_COLS, G_TYPE_BOOLEAN, G_TYPE_STRING, G_TYPE_STRING, G_TYPE_INT); events = pevent_list_events(pevent, EVENT_SORT_SYSTEM); if (!events) return GTK_TREE_MODEL(treestore); for (i = 0; events[i]; i++) { str = pevent_filter_make_string(event_filter, events[i]->id); if (!str) continue; /* We only want to show advanced filters */ if (strcmp(str, "TRUE") == 0 || strcmp(str, "FALSE") == 0) { free(str); continue; } gtk_tree_store_append(treestore, &iter_events, NULL); gtk_tree_store_set(treestore, &iter_events, ADV_COL_DELETE, FALSE, ADV_COL_EVENT, events[i]->name, ADV_COL_FILTER, str, ADV_COL_ID, events[i]->id, -1); free(str); } return GTK_TREE_MODEL(treestore); } #define DELETE_FILTER "Delete Filter" static void adv_filter_cursor_changed(GtkTreeView *treeview, gpointer data) { GtkTreeViewColumn *col; GtkTreeModel *model; GtkTreePath *path; GtkTreeIter iter; gboolean active; const gchar *title; model = gtk_tree_view_get_model(GTK_TREE_VIEW(treeview)); if (!model) return; gtk_tree_view_get_cursor(treeview, &path, &col); if (!path) return; if (!col) goto free; title = gtk_tree_view_column_get_title(col); if (strcmp(title, DELETE_FILTER) != 0) goto free; if (!gtk_tree_model_get_iter(model, &iter, path)) goto free; gtk_tree_model_get(model, &iter, ADV_COL_DELETE, &active, -1); active = active ? FALSE : TRUE; gtk_tree_store_set(GTK_TREE_STORE(model), &iter, ADV_COL_DELETE, active, -1); free: gtk_tree_path_free(path); } static GtkWidget * create_adv_filter_view(struct pevent *pevent, struct event_filter *event_filter) { GtkTreeViewColumn *col; GtkCellRenderer *renderer; GtkCellRenderer *togrend; GtkWidget *view; GtkTreeModel *model; view = gtk_tree_view_new(); renderer = gtk_cell_renderer_text_new(); togrend = gtk_cell_renderer_toggle_new(); /* --- delete column --- */ col = gtk_tree_view_column_new(); gtk_tree_view_column_set_title(col, DELETE_FILTER); gtk_tree_view_append_column(GTK_TREE_VIEW(view), col); gtk_tree_view_column_pack_start(col, togrend, FALSE); gtk_tree_view_column_add_attribute(col, togrend, "active", ADV_COL_DELETE); /* --- events column --- */ col = gtk_tree_view_column_new(); gtk_tree_view_column_set_title(col, "Event"); gtk_tree_view_append_column(GTK_TREE_VIEW(view), col); gtk_tree_view_column_pack_start(col, renderer, FALSE); gtk_tree_view_column_add_attribute(col, renderer, "text", ADV_COL_EVENT); /* --- filter column --- */ col = gtk_tree_view_column_new(); gtk_tree_view_column_set_title(col, "Filter"); gtk_tree_view_append_column(GTK_TREE_VIEW(view), col); gtk_tree_view_column_pack_start(col, renderer, FALSE); gtk_tree_view_column_add_attribute(col, renderer, "text", ADV_COL_FILTER); model = create_tree_filter_model(pevent, event_filter); gtk_tree_view_set_model(GTK_TREE_VIEW(view), model); g_object_unref(model); gtk_tree_selection_set_mode(gtk_tree_view_get_selection(GTK_TREE_VIEW(view)), GTK_SELECTION_NONE); g_signal_connect_swapped (view, "cursor-changed", G_CALLBACK (adv_filter_cursor_changed), (gpointer) view); return view; } /** * trace_adv_filter_dialog - make dialog for text * @handle: the handle to the tracecmd data file * @event_filter: advanced filters * @func: The function to call when accept or cancel is pressed * @data: data to pass to the function @func */ void trace_adv_filter_dialog(struct tracecmd_input *handle, struct event_filter *event_filter, trace_adv_filter_cb_func func, gpointer data) { struct event_combo_info combo_info; struct pevent *pevent; GtkWidget *dialog; GtkWidget *hbox; GtkWidget *label; GtkWidget *entry; GtkWidget *scrollwin; GtkWidget *view; GtkWidget *event_box; const gchar *text; gint *event_ids; int result; if (!handle) return; pevent = tracecmd_get_pevent(handle); if (!pevent) return; /* --- Make dialog window --- */ dialog = gtk_dialog_new_with_buttons("Advanced Filters", NULL, GTK_DIALOG_MODAL, "Apply", GTK_RESPONSE_ACCEPT, GTK_STOCK_CANCEL, GTK_RESPONSE_REJECT, NULL); scrollwin = gtk_scrolled_window_new(NULL, NULL); gtk_scrolled_window_set_policy(GTK_SCROLLED_WINDOW(scrollwin), GTK_POLICY_AUTOMATIC, GTK_POLICY_AUTOMATIC); view = create_adv_filter_view(pevent, event_filter); gtk_container_add(GTK_CONTAINER(scrollwin), view); gtk_box_pack_start(GTK_BOX(GTK_DIALOG(dialog)->vbox), scrollwin, TRUE, TRUE, 0); label = gtk_label_new(" [,] : [!][(][)]" "[&&/|| [(][)]]\n\n" "Examples:\n" " sched_switch : next_prio < 100 && (prev_prio > 100" "&& prev_pid != 0)\n" " irq.* : irq != 38\n" " .* : common_pid == 1234"); gtk_box_pack_start(GTK_BOX(GTK_DIALOG(dialog)->vbox), label, TRUE, FALSE, 0); gtk_widget_show(label); combo_info.pevent = pevent; event_box = event_info_box(&combo_info); gtk_box_pack_start(GTK_BOX(GTK_DIALOG(dialog)->vbox), event_box, FALSE, FALSE, 0); gtk_widget_show(event_box); hbox = gtk_hbox_new(FALSE, 0); gtk_box_pack_start(GTK_BOX(GTK_DIALOG(dialog)->vbox), hbox, TRUE, FALSE, 0); gtk_widget_show(hbox); label = gtk_label_new("Filter:"); gtk_box_pack_start(GTK_BOX(hbox), label, FALSE, FALSE, 0); gtk_widget_show(label); entry = gtk_entry_new(); gtk_box_pack_start(GTK_BOX(hbox), entry, TRUE, TRUE, 0); gtk_widget_show(entry); combo_info.entry = entry; gtk_widget_set_size_request(GTK_WIDGET(dialog), TEXT_DIALOG_WIDTH, TEXT_DIALOG_HEIGHT); gtk_widget_show_all(dialog); result = gtk_dialog_run(GTK_DIALOG(dialog)); switch (result) { case GTK_RESPONSE_ACCEPT: text = gtk_entry_get_text(GTK_ENTRY(entry)); event_ids = get_event_ids(GTK_TREE_VIEW(view)); func(TRUE, text, event_ids, data); free(event_ids); break; case GTK_RESPONSE_REJECT: func(FALSE, NULL, NULL, data); break; default: break; }; gtk_widget_destroy(dialog); } /* --- task list dialog --- */ enum { TASK_COL_SELECT, TASK_COL_PID, TASK_COL_COMM, NUM_TASK_COLS, }; static void get_tasks(GtkTreeView *treeview, gint **selected, gint **non_selected) { GtkTreeModel *model; GtkTreeIter iter; gboolean active; gint *pids = NULL; gint *non_pids = NULL; gint pid; int pid_count = 0; int non_count = 0; model = gtk_tree_view_get_model(GTK_TREE_VIEW(treeview)); if (!model) return; if (!gtk_tree_model_iter_children(model, &iter, NULL)) return; for (;;) { gtk_tree_model_get(GTK_TREE_MODEL(model), &iter, TASK_COL_SELECT, &active, TASK_COL_PID, &pid, -1); if (active) trace_array_add(&pids, &pid_count, pid); else trace_array_add(&non_pids, &non_count, pid); if (!gtk_tree_model_iter_next(model, &iter)) break; } *selected = pids; *non_selected = non_pids; } static GtkTreeModel * create_task_model(struct pevent *pevent, gint *tasks, gint *selected) { GtkTreeStore *treestore; GtkTreeIter iter; const char *comm; gboolean select; gint *ret; gint *list; gint count; gint i; if (!tasks) return NULL; treestore = gtk_tree_store_new(NUM_TASK_COLS, G_TYPE_BOOLEAN, G_TYPE_INT, G_TYPE_STRING); /* sort our tasks */ for (i = 0; tasks[i] >= 0; i++) ; count = i; /* Don't assume we can modify the array passed in. */ list = malloc_or_die(sizeof(gint) * (count + 1)); memcpy(list, tasks, sizeof(gint) * (count + 1)); qsort(list, count, sizeof(gint), id_cmp); /* Now that we have our own copy, use it instead */ tasks = list; if (selected) { /* do the same for selected */ for (i = 0; selected[i] >= 0; i++) ; count = i; /* count is now the size of selected */ list = malloc_or_die(sizeof(gint) * (count + 1)); memcpy(list, selected, sizeof(gint) * (count + 1)); qsort(list, count, sizeof(gint), id_cmp); selected = list; } for (i = 0; tasks[i] >= 0; i++) { comm = pevent_data_comm_from_pid(pevent, tasks[i]); gtk_tree_store_append(treestore, &iter, NULL); select = FALSE; if (selected) { ret = bsearch(&tasks[i], selected, count, sizeof(gint), id_cmp); if (ret) select = TRUE; } gtk_tree_store_set(treestore, &iter, TASK_COL_SELECT, select, TASK_COL_PID, tasks[i], TASK_COL_COMM, comm, -1); } free(tasks); free(selected); return GTK_TREE_MODEL(treestore); } static void task_cursor_changed(gpointer data, GtkTreeView *treeview) { gboolean *start = data; GtkTreeModel *model; GtkTreePath *path; GtkTreeIter iter; gboolean active; if (!*start) { *start = TRUE; return; } model = gtk_tree_view_get_model(GTK_TREE_VIEW(treeview)); if (!model) return; gtk_tree_view_get_cursor(treeview, &path, NULL); if (!path) return; if (!gtk_tree_model_get_iter(model, &iter, path)) goto free; gtk_tree_model_get(model, &iter, TASK_COL_SELECT, &active, -1); active = active ? FALSE : TRUE; gtk_tree_store_set(GTK_TREE_STORE(model), &iter, TASK_COL_SELECT, active, -1); free: gtk_tree_path_free(path); } static GtkWidget * create_task_view(struct pevent *pevent, gint *tasks, gint *selected, gboolean *start) { GtkTreeViewColumn *col; GtkCellRenderer *renderer; GtkCellRenderer *togrend; GtkWidget *view; GtkTreeModel *model; view = gtk_tree_view_new(); renderer = gtk_cell_renderer_text_new(); togrend = gtk_cell_renderer_toggle_new(); /* --- select column --- */ col = gtk_tree_view_column_new(); gtk_tree_view_column_set_title(col, "Plot"); gtk_tree_view_append_column(GTK_TREE_VIEW(view), col); gtk_tree_view_column_pack_start(col, togrend, FALSE); gtk_tree_view_column_add_attribute(col, togrend, "active", TASK_COL_SELECT); /* --- pid column --- */ col = gtk_tree_view_column_new(); gtk_tree_view_column_set_title(col, "PID"); gtk_tree_view_append_column(GTK_TREE_VIEW(view), col); gtk_tree_view_column_pack_start(col, renderer, FALSE); gtk_tree_view_column_add_attribute(col, renderer, "text", TASK_COL_PID); /* --- comm column --- */ col = gtk_tree_view_column_new(); gtk_tree_view_column_set_title(col, "Task"); gtk_tree_view_append_column(GTK_TREE_VIEW(view), col); gtk_tree_view_column_pack_start(col, renderer, FALSE); gtk_tree_view_column_add_attribute(col, renderer, "text", TASK_COL_COMM); model = create_task_model(pevent, tasks, selected); gtk_tree_view_set_model(GTK_TREE_VIEW(view), model); g_object_unref(model); gtk_tree_selection_set_mode(gtk_tree_view_get_selection(GTK_TREE_VIEW(view)), GTK_SELECTION_NONE); g_signal_connect_swapped (view, "cursor-changed", G_CALLBACK (task_cursor_changed), (gpointer)start); return view; } /** * trace_task_dialog - make dialog to select tasks * @handle: the handle to the tracecmd data file * @tasks: array of task pids ending with -1 * @selected: tasks from @tasks that should be selected (can be NULL). * Also an array of pids ending with -1 * @func: callback function when accept or cancel is selected * @data: data to pass to the function @func */ void trace_task_dialog(struct tracecmd_input *handle, gint *tasks, gint *selected, trace_task_cb_func func, gpointer data) { struct pevent *pevent; GtkWidget *dialog; GtkWidget *scrollwin; GtkWidget *view; gboolean start = FALSE; gint *non_select; int result; if (!handle) return; pevent = tracecmd_get_pevent(handle); if (!pevent) return; /* --- Make dialog window --- */ dialog = gtk_dialog_new_with_buttons("Select Tasks", NULL, GTK_DIALOG_MODAL, "Apply", GTK_RESPONSE_ACCEPT, GTK_STOCK_CANCEL, GTK_RESPONSE_REJECT, NULL); scrollwin = gtk_scrolled_window_new(NULL, NULL); gtk_scrolled_window_set_policy(GTK_SCROLLED_WINDOW(scrollwin), GTK_POLICY_AUTOMATIC, GTK_POLICY_AUTOMATIC); view = create_task_view(pevent, tasks, selected, &start); gtk_container_add(GTK_CONTAINER(scrollwin), view); gtk_box_pack_start(GTK_BOX(GTK_DIALOG(dialog)->vbox), scrollwin, TRUE, TRUE, 0); gtk_widget_set_size_request(GTK_WIDGET(dialog), DIALOG_WIDTH, DIALOG_HEIGHT); gtk_widget_show_all(dialog); selected = NULL; result = gtk_dialog_run(GTK_DIALOG(dialog)); switch (result) { case GTK_RESPONSE_ACCEPT: get_tasks(GTK_TREE_VIEW(view), &selected, &non_select); func(TRUE, selected, non_select, data); free(selected); free(non_select); break; case GTK_RESPONSE_REJECT: func(FALSE, NULL, NULL, data); break; default: break; }; gtk_widget_destroy(dialog); } enum { COL_EVENT, COL_ACTIVE, COL_NORMAL, COL_ACTIVE_START, COL_EVENT_ID, NUM_EVENT_COLS, }; struct event_filter_helper { trace_filter_event_cb_func func; GtkTreeView *view; gpointer data; }; gboolean system_is_enabled(gchar **systems, gint systems_size, const gchar *system) { const gchar **sys = &system; if (!systems) return FALSE; sys = bsearch(sys, systems, systems_size, sizeof(system), str_cmp); return sys != NULL; } gboolean event_is_enabled(gint *events, gint events_size, gint event) { gint *ret; if (!events) return FALSE; ret = bsearch(&event, events, events_size, sizeof(gint), id_cmp); return ret != NULL; } static GtkTreeModel * create_tree_event_model(struct pevent *pevent, struct event_filter *filter, gboolean all_events, gchar **systems_set, gint *event_ids_set) { GtkTreeStore *treestore; GtkTreeIter iter_all, iter_sys, iter_events; struct event_format **events; struct event_format *event; char *last_system = NULL; gboolean sysactive; gboolean active, normal; gchar **systems = NULL; gint *event_ids = NULL; gint systems_size; gint event_ids_size; gint i; treestore = gtk_tree_store_new(NUM_EVENT_COLS, G_TYPE_STRING, G_TYPE_BOOLEAN, G_TYPE_BOOLEAN, G_TYPE_BOOLEAN, G_TYPE_INT); gtk_tree_store_append(treestore, &iter_all, NULL); gtk_tree_store_set(treestore, &iter_all, COL_EVENT, "All", COL_ACTIVE, all_events, COL_NORMAL, TRUE, COL_ACTIVE_START, FALSE, -1); events = pevent_list_events(pevent, EVENT_SORT_SYSTEM); if (!events) return GTK_TREE_MODEL(treestore); if (systems_set) { for (systems_size = 0; systems_set[systems_size]; systems_size++) ; systems = g_new(typeof(*systems), systems_size + 1); memcpy(systems, systems_set, sizeof(*systems) * (systems_size + 1)); qsort(systems, systems_size, sizeof(gchar *), str_cmp); } if (event_ids_set) { for (event_ids_size = 0; event_ids_set[event_ids_size] != -1; event_ids_size++) ; event_ids = g_new(typeof(*event_ids), event_ids_size + 1); memcpy(event_ids, event_ids_set, sizeof(*event_ids) * (event_ids_size + 1)); qsort(event_ids, event_ids_size, sizeof(gint), id_cmp); } for (i = 0; events[i]; i++) { event = events[i]; if (!last_system || strcmp(last_system, event->system) != 0) { gtk_tree_store_append(treestore, &iter_sys, &iter_all); sysactive = all_events || system_is_enabled(systems, systems_size, event->system); gtk_tree_store_set(treestore, &iter_sys, COL_EVENT, event->system, COL_ACTIVE, sysactive, COL_NORMAL, TRUE, -1); last_system = event->system; } active = all_events || sysactive || event_is_enabled(event_ids, event_ids_size, event->id); normal = TRUE; if (active && filter) { if (pevent_event_filtered(filter, event->id) && !pevent_filter_event_has_trivial(filter, event->id, FILTER_TRIVIAL_BOTH)) normal = FALSE; /* Make trivial false not selected */ else if (pevent_filter_event_has_trivial(filter, event->id, FILTER_TRIVIAL_FALSE)) active = FALSE; } gtk_tree_store_append(treestore, &iter_events, &iter_sys); gtk_tree_store_set(treestore, &iter_events, COL_EVENT, event->name, COL_ACTIVE, active, COL_NORMAL, normal, COL_EVENT_ID, event->id, -1); } /* These are copies of the sets, using glib allocation */ g_free(systems); g_free(event_ids); return GTK_TREE_MODEL(treestore); } static void update_active_events(GtkTreeModel *model, GtkTreeIter *parent, gboolean active) { GtkTreeIter event; if (!gtk_tree_model_iter_children(model, &event, parent)) return; for (;;) { gtk_tree_store_set(GTK_TREE_STORE(model), &event, COL_ACTIVE, active, -1); if (!gtk_tree_model_iter_next(model, &event)) break; } } static void update_active_systems(GtkTreeModel *model, GtkTreeIter *parent, gboolean active) { GtkTreeIter sys; if (!gtk_tree_model_iter_children(model, &sys, parent)) return; for (;;) { gtk_tree_store_set(GTK_TREE_STORE(model), &sys, COL_ACTIVE, active, -1); update_active_events(model, &sys, active); if (!gtk_tree_model_iter_next(model, &sys)) break; } } static void event_cursor_changed(GtkTreeView *treeview, gpointer data) { GtkTreeModel *model; GtkTreePath *path; GtkTreeIter iter, parent, grandparent; gboolean active, start; gint depth; model = gtk_tree_view_get_model(GTK_TREE_VIEW(treeview)); if (!model) return; gtk_tree_view_get_cursor(treeview, &path, NULL); if (!path) return; if (!gtk_tree_model_get_iter(model, &iter, path)) goto free; depth = gtk_tree_path_get_depth(path); if (depth == 1) { /* * The first time we start up, the cursor will * select the "All Events" row, and call * this routine. But we don't want to do anything. * Check and activate. */ gtk_tree_model_get(model, &iter, COL_ACTIVE_START, &start, -1); if (!start) { gtk_tree_store_set(GTK_TREE_STORE(model), &iter, COL_ACTIVE_START, TRUE, -1); goto free; } } gtk_tree_model_get(model, &iter, COL_ACTIVE, &active, -1); active = active ? FALSE : TRUE; gtk_tree_store_set(GTK_TREE_STORE(model), &iter, COL_ACTIVE, active, -1); if (depth == 1) { /* Set all rows */ update_active_systems(model, &iter, active); } else if (depth == 2) { /* set this system */ update_active_events(model, &iter, active); if (!active) { /* disable the all events toggle */ gtk_tree_model_iter_parent(model, &parent, &iter); gtk_tree_store_set(GTK_TREE_STORE(model), &parent, COL_ACTIVE, FALSE, -1); } } else { if (!active) { /* disable system and all events toggles */ gtk_tree_model_iter_parent(model, &parent, &iter); gtk_tree_store_set(GTK_TREE_STORE(model), &parent, COL_ACTIVE, FALSE, -1); gtk_tree_model_iter_parent(model, &grandparent, &parent); gtk_tree_store_set(GTK_TREE_STORE(model), &grandparent, COL_ACTIVE, FALSE, -1); } } free: gtk_tree_path_free(path); } static gboolean child_set(GtkTreeModel *model, GtkTreeIter *parent) { GtkTreeIter iter; gboolean active; if (!gtk_tree_model_iter_children(model, &iter, parent)) return FALSE; for (;;) { gtk_tree_model_get(model, &iter, COL_ACTIVE, &active, -1); if (active) return TRUE; if (!gtk_tree_model_iter_next(model, &iter)) break; } return FALSE; } static void expand_rows(GtkTreeView *tree, GtkTreeModel *model, gboolean all_events, gchar **systems, gint *events) { GtkTreePath *path; GtkTreeIter all; GtkTreeIter sys; gboolean active; /* Expand the "All Events" row */ path = gtk_tree_path_new_from_string("0"); gtk_tree_view_expand_row(tree, path, FALSE); gtk_tree_path_free(path); if (all_events) return; /* Expand the system rows that are not full or empty */ if (!gtk_tree_model_get_iter_first(model, &all)) return; if (!gtk_tree_model_iter_children(model, &sys, &all)) return; for (;;) { gtk_tree_model_get(model, &sys, COL_ACTIVE, &active, -1); if (!active && child_set(model, &sys)) { path = gtk_tree_model_get_path(model, &sys); gtk_tree_view_expand_row(tree, path, FALSE); gtk_tree_path_free(path); } if (!gtk_tree_model_iter_next(model, &sys)) break; } } /** * trace_update_event_view - update the events of an existing event view * @event_view: event view to update * @pevent: The parse event descriptor * @filter: Event filter to determine what events have advanced filters * May be NULL. * @all_events: True if all should be selected, * @systems: Array of system names of systems that should be selected. * @events: Array of event ids of events that should be selecetd. */ int trace_update_event_view(GtkWidget *event_view, struct pevent *pevent, struct event_filter *filter, gboolean all_events, gchar **systems, gint *events) { GtkTreeView *view = GTK_TREE_VIEW(event_view); GtkTreeModel *model; model = create_tree_event_model(pevent, filter, all_events, systems, events); if (!model) return -1; gtk_tree_view_set_model(view, model); g_object_unref(model); expand_rows(view, model, all_events, systems, events); return 0; } /** * trace_create_event_list_view - create a list view of events in pevent * @pevent: The parse event descriptor * @filter: Event filter to determine what events have advanced filters * May be NULL. * @all_events: True if all should be selected, * @systems: Array of system names of systems that should be selected. * @events: Array of event ids of events that should be selected. * * Returns a tree view widget of the events. */ GtkWidget * trace_create_event_list_view(struct pevent *pevent, struct event_filter *filter, gboolean all_events, gchar **systems, gint *events) { GtkTreeViewColumn *col; GtkCellRenderer *renderer; GtkCellRenderer *togrend; GtkWidget *view; GtkTreeModel *model; view = gtk_tree_view_new(); /* --- events column --- */ col = gtk_tree_view_column_new(); gtk_tree_view_column_set_title(col, "Events"); gtk_tree_view_append_column(GTK_TREE_VIEW(view), col); renderer = gtk_cell_renderer_text_new(); togrend = gtk_cell_renderer_toggle_new(); gtk_tree_view_column_pack_start(col, togrend, FALSE); gtk_tree_view_column_pack_start(col, renderer, FALSE); gtk_tree_view_column_add_attribute(col, togrend, "active", COL_ACTIVE); gtk_tree_view_column_add_attribute(col, togrend, "sensitive", COL_NORMAL); gtk_tree_view_column_add_attribute(col, renderer, "text", COL_EVENT); gtk_tree_view_column_add_attribute(col, renderer, "sensitive", COL_NORMAL); model = create_tree_event_model(pevent, filter, all_events, systems, events); gtk_tree_view_set_model(GTK_TREE_VIEW(view), model); g_object_unref(model); gtk_tree_selection_set_mode(gtk_tree_view_get_selection(GTK_TREE_VIEW(view)), GTK_SELECTION_NONE); expand_rows(GTK_TREE_VIEW(view), model, all_events, systems, events); g_signal_connect_swapped (view, "cursor-changed", G_CALLBACK (event_cursor_changed), (gpointer) view); return view; } static gint update_events(GtkTreeModel *model, GtkTreeIter *parent, gint **events, gint size) { GtkTreeIter event; gboolean active; gint id; if (!gtk_tree_model_iter_children(model, &event, parent)) return size; for (;;) { gtk_tree_model_get(model, &event, COL_ACTIVE, &active, COL_EVENT_ID, &id, -1); if (active) *events = tracecmd_add_id(*events, id, size++); if (!gtk_tree_model_iter_next(model, &event)) break; } return size; } static void update_system_events(GtkTreeModel *model, GtkTreeIter *parent, gchar ***systems, gint **events) { GtkTreeIter sys; gboolean active; gchar *system; gint sys_size = 0; gint event_size = 0; if (!gtk_tree_model_iter_children(model, &sys, parent)) return; for (;;) { gtk_tree_model_get(model, &sys, COL_ACTIVE, &active, COL_EVENT, &system, -1); if (active) *systems = tracecmd_add_list(*systems, system, sys_size++); else event_size = update_events(model, &sys, events, event_size); g_free(system); if (!gtk_tree_model_iter_next(model, &sys)) break; } } /** * trace_extract_event_list_view - extract selected events from event view * @event_view: the event list view widget to extract from * @all_events: Set if all events are set (@systems and @events are left as is) * @systems: Set to the selected systems (if @all_events is FALSE) * @events: Set to the selected events (not in selected systems and if @all_events is FALSE) * * Returns 0 on success, -1 otherwise. */ gint trace_extract_event_list_view(GtkWidget *event_view, gboolean *all_events, gchar ***systems, gint **events) { GtkTreeView *view = GTK_TREE_VIEW(event_view); GtkTreeModel *model; GtkTreeIter iter; model = gtk_tree_view_get_model(view); if (!model) return -1; if (!gtk_tree_model_get_iter_first(model, &iter)) return -1; gtk_tree_model_get(model, &iter, COL_ACTIVE, all_events, -1); if (!*all_events) update_system_events(model, &iter, systems, events); return 0; } static void accept_events(GtkWidget *view, trace_filter_event_cb_func func, gpointer data) { gboolean all_events; gchar **systems = NULL; gint *events = NULL; if (trace_extract_event_list_view(view, &all_events, &systems, &events) < 0) { /* Failed to extract ? */ func(FALSE, FALSE, NULL, NULL, data); return; } func(TRUE, all_events, systems, events, data); tracecmd_free_list(systems); free(events); } static void filter_event_dialog(struct pevent *pevent, struct event_filter *filter, gboolean all_events, gchar **systems, gint *events, trace_filter_event_cb_func func, gpointer data) { GtkWidget *dialog; GtkWidget *scrollwin; GtkWidget *view; int result; /* --- Make dialog window --- */ dialog = gtk_dialog_new_with_buttons("Filter Events", NULL, GTK_DIALOG_MODAL, "Apply", GTK_RESPONSE_ACCEPT, GTK_STOCK_CANCEL, GTK_RESPONSE_REJECT, NULL); scrollwin = gtk_scrolled_window_new(NULL, NULL); gtk_scrolled_window_set_policy(GTK_SCROLLED_WINDOW(scrollwin), GTK_POLICY_AUTOMATIC, GTK_POLICY_AUTOMATIC); view = trace_create_event_list_view(pevent, filter, all_events, systems, events); gtk_box_pack_start(GTK_BOX(GTK_DIALOG(dialog)->vbox), scrollwin, TRUE, TRUE, 0); gtk_container_add(GTK_CONTAINER(scrollwin), view); gtk_widget_set_size_request(GTK_WIDGET(dialog), DIALOG_WIDTH, DIALOG_HEIGHT); gtk_widget_show_all(dialog); result = gtk_dialog_run(GTK_DIALOG(dialog)); switch (result) { case GTK_RESPONSE_ACCEPT: accept_events(view, func, data); break; case GTK_RESPONSE_REJECT: func(FALSE, FALSE, NULL, NULL, data); break; default: break; }; gtk_widget_destroy(dialog); } /** * trace_filter_event_dialog - make dialog with event listing * @handle: the handle to the tracecmd data file * @all_events: if TRUE then select all events. * @systems: NULL or a string array of systems terminated with NULL * @events: NULL or a int array of event ids terminated with -1 * @func: The function to call when accept or cancel is pressed * @data: data to pass to the function @func * * If @all_events is set, then @systems and @events are ignored. */ void trace_filter_event_dialog(struct tracecmd_input *handle, gboolean all_events, gchar **systems, gint *events, trace_filter_event_cb_func func, gpointer data) { struct pevent *pevent; if (!handle) return; pevent = tracecmd_get_pevent(handle); if (!pevent) return; filter_event_dialog(pevent, NULL, all_events, systems, events, func, data); } void trace_filter_pevent_dialog(struct pevent *pevent, gboolean all_events, gchar **systems, gint *events, trace_filter_event_cb_func func, gpointer data) { if (!pevent) return; filter_event_dialog(pevent, NULL, all_events, systems, events, func, data); } /** * trace_filter_event_filter_dialog - make dialog with event listing * @handle: the handle to the tracecmd data file * @filter: the event filter to determine what to display. * @all_events: if TRUE then select all events. * @func: The function to call when accept or cancel is pressed * @data: data to pass to the function @func * * If @all_events is set, then @systems and @events are ignored. */ void trace_filter_event_filter_dialog(struct tracecmd_input *handle, struct event_filter *filter, gboolean all_events, trace_filter_event_cb_func func, gpointer data) { struct pevent *pevent; gchar **systems; gint *event_ids; if (!handle) return; pevent = tracecmd_get_pevent(handle); if (!pevent) return; trace_filter_convert_filter_to_names(filter, &systems, &event_ids); filter_event_dialog(pevent, filter, all_events, systems, event_ids, func, data); } struct cpu_filter_helper { gboolean allcpus; guint64 *cpu_mask; GtkWidget **buttons; int cpus; }; static void destroy_cpu_helper(struct cpu_filter_helper *cpu_helper) { g_free(cpu_helper->cpu_mask); g_free(cpu_helper->buttons); g_free(cpu_helper); } #define CPU_ALL_CPUS_STR "All CPUs" void cpu_toggle(gpointer data, GtkWidget *widget) { struct cpu_filter_helper *cpu_helper = data; const gchar *label; gboolean active; gint cpu; label = gtk_button_get_label(GTK_BUTTON(widget)); active = gtk_toggle_button_get_active(GTK_TOGGLE_BUTTON(widget)); if (strcmp(label, CPU_ALL_CPUS_STR) == 0) { cpu_helper->allcpus = active; /* enable/disable all toggles */ for (cpu = 0; cpu < cpu_helper->cpus; cpu++) gtk_toggle_button_set_active(GTK_TOGGLE_BUTTON(cpu_helper->buttons[cpu]), active ? TRUE : FALSE); return; } /* Get the CPU # from the label. Pass "CPU " */ cpu = atoi(label + 4); if (active) cpu_set(cpu_helper->cpu_mask, cpu); else cpu_clear(cpu_helper->cpu_mask, cpu); cpu_helper->allcpus = cpu_allset(cpu_helper->cpu_mask, cpu_helper->cpus); /* * Deactivate sending 'toggled' signal for "All CPUs" * while we adjust its state */ g_signal_handlers_block_by_func(GTK_TOGGLE_BUTTON(cpu_helper->buttons[cpu_helper->cpus]), G_CALLBACK (cpu_toggle), (gpointer) cpu_helper); gtk_toggle_button_set_active(GTK_TOGGLE_BUTTON(cpu_helper->buttons[cpu_helper->cpus]), cpu_helper->allcpus); g_signal_handlers_unblock_by_func(GTK_TOGGLE_BUTTON(cpu_helper->buttons[cpu_helper->cpus]), G_CALLBACK (cpu_toggle), (gpointer) cpu_helper); } /** * trace_filter_cpu_dialog - make dialog with cpu listing * @all_cpus: if TRUE then select all cpus. * @cpus_selected: NULL or a CPU mask with the CPUs to be select set. * @func: The function to call when accept or cancel is pressed * @data: data to pass to the function @func * * If @all_cpus is set, then @cpus_selected is ignored. */ void trace_filter_cpu_dialog(gboolean all_cpus, guint64 *cpus_selected, gint cpus, trace_filter_cpu_cb_func func, gpointer data) { struct cpu_filter_helper *cpu_helper; guint64 *cpu_mask = NULL; GtkWidget *dialog; GtkWidget *scrollwin; GtkWidget *viewport; GtkWidget *hbox; GtkWidget *vbox; GtkWidget *check; GtkRequisition req; gchar counter[100]; gint width, height; gint allset; gint cpu; int result; cpu_helper = g_new0(typeof(*cpu_helper), 1); g_assert(cpu_helper != NULL); /* --- Make dialog window --- */ dialog = gtk_dialog_new_with_buttons("Filter CPUS", NULL, GTK_DIALOG_MODAL, "Apply", GTK_RESPONSE_ACCEPT, GTK_STOCK_CANCEL, GTK_RESPONSE_REJECT, NULL); cpu_helper->cpus = cpus; cpu_helper->buttons = g_new0(GtkWidget *, cpus + 1); g_assert(cpu_helper->buttons); scrollwin = gtk_scrolled_window_new(NULL, NULL); gtk_scrolled_window_set_policy(GTK_SCROLLED_WINDOW(scrollwin), GTK_POLICY_AUTOMATIC, GTK_POLICY_AUTOMATIC); viewport = gtk_viewport_new(NULL, NULL); gtk_widget_show(viewport); gtk_container_add(GTK_CONTAINER(scrollwin), viewport); gtk_box_pack_start(GTK_BOX(GTK_DIALOG(dialog)->vbox), scrollwin, TRUE, TRUE, 0); /* Add hbox to center buttons. Is there a better way? */ hbox = gtk_hbox_new(FALSE, 0); gtk_container_add(GTK_CONTAINER(viewport), hbox); gtk_widget_show(hbox); vbox = gtk_vbox_new(TRUE, 0); gtk_box_pack_start(GTK_BOX(hbox), vbox, TRUE, FALSE, 0); gtk_widget_show(vbox); check = gtk_check_button_new_with_label(CPU_ALL_CPUS_STR); gtk_box_pack_start(GTK_BOX(vbox), check, TRUE, TRUE, 0); /* The last button will be the all CPUs button */ cpu_helper->buttons[cpus] = check; allset = cpus_selected ? 0 : 1; if (!allset) { /* check if the list is all set */ for (cpu = 0; cpu < cpus; cpu++) if (!cpu_isset(cpus_selected, cpu)) break; if (cpu == cpus) allset = 1; } if (allset) gtk_toggle_button_set_active(GTK_TOGGLE_BUTTON(check), TRUE); g_signal_connect_swapped (check, "toggled", G_CALLBACK (cpu_toggle), (gpointer) cpu_helper); cpu_helper->allcpus = allset; cpu_helper->cpu_mask = g_new0(guint64, (cpus >> 6) + 1); g_assert(cpu_helper->cpu_mask != NULL); gtk_widget_show(check); for (cpu = 0; cpu < cpus; cpu++) { g_snprintf(counter, 100, "CPU %d", cpu); check = gtk_check_button_new_with_label(counter); cpu_helper->buttons[cpu] = check; gtk_box_pack_start(GTK_BOX(vbox), check, TRUE, FALSE, 0); if (cpus_selected && cpu_isset(cpus_selected, cpu)) { cpu_set(cpu_helper->cpu_mask, cpu); gtk_toggle_button_set_active(GTK_TOGGLE_BUTTON(check), TRUE); } else gtk_toggle_button_set_active(GTK_TOGGLE_BUTTON(check), FALSE); g_signal_connect_swapped (check, "toggled", G_CALLBACK (cpu_toggle), (gpointer) cpu_helper); gtk_widget_show(check); } /* Figure out a good size to show */ gtk_widget_size_request(hbox, &req); height = req.height; gtk_widget_size_request(scrollwin, &req); height += req.height; gtk_widget_size_request(dialog, &req); width = req.width; height += req.height; if (width > DIALOG_WIDTH) width = DIALOG_WIDTH; if (height > DIALOG_HEIGHT) height = DIALOG_HEIGHT; gtk_widget_set_size_request(GTK_WIDGET(dialog), width, height); gtk_widget_show_all(dialog); result = gtk_dialog_run(GTK_DIALOG(dialog)); switch (result) { case GTK_RESPONSE_ACCEPT: if (!cpu_helper->allcpus) { cpu_mask = cpu_helper->cpu_mask; cpu_helper->cpu_mask = NULL; } func(TRUE, cpu_helper->allcpus, cpu_mask, data); break; case GTK_RESPONSE_REJECT: func(FALSE, FALSE, NULL, data); break; default: break; }; g_free(cpu_mask); gtk_widget_destroy(dialog); destroy_cpu_helper(cpu_helper); } /* -- Helper functions -- */ /** * trace_filter_convert_filter_to_names - convert a filter to names. * @filter: the filter to convert * @systems: array of systems that the filter selects (may be NULL) * @event_ids: array of event ids that the filter selects (may be NULL) * * @systems will be filled when the filter selects all events within * its system. (may return NULL) * * @event_ids will be all events selected (not including those selected * by @systems) */ void trace_filter_convert_filter_to_names(struct event_filter *filter, gchar ***systems, gint **event_ids) { struct pevent *pevent = filter->pevent; struct event_format **events; struct event_format *event; char *last_system = NULL; int all_selected = 1; int start_sys = 0; int sys_count = 0; int event_count = 0; int i, x; if (systems) *systems = NULL; if (event_ids) *event_ids = NULL; events = pevent_list_events(pevent, EVENT_SORT_SYSTEM); for (i = 0; events[i]; i++) { event = events[i]; if (systems && last_system && strcmp(last_system, events[i]->system) != 0) { if (all_selected) *systems = tracecmd_add_list(*systems, last_system, sys_count++); start_sys = i; all_selected = 1; } if (pevent_filter_event_has_trivial(filter, event->id, FILTER_TRIVIAL_TRUE)) { if (!all_selected || !systems) *event_ids = tracecmd_add_id(*event_ids, event->id, event_count++); } else { if (all_selected && event_ids) { for (x = start_sys; x < i; x++) { *event_ids = tracecmd_add_id(*event_ids, events[x]->id, event_count++); } } all_selected = 0; /* If this event is filtered, still add it */ if (pevent_event_filtered(filter, event->id)) *event_ids = tracecmd_add_id(*event_ids, event->id, event_count++); } last_system = event->system; } if (systems && last_system && all_selected) *systems = tracecmd_add_list(*systems, last_system, sys_count++); } /** * trace_filter_convert_char_to_filter - convert the strings to the filter * @filter: the filter to convert * @systems: array of systems that will have its events selected in @filter * @events: array of event ids that will be selected in @filter */ void trace_filter_convert_char_to_filter(struct event_filter *filter, gchar **systems, gint *events) { struct pevent *pevent; struct event_filter *copy; struct event_format *event; int i; pevent = filter->pevent; /* Make a copy to use later */ copy = pevent_filter_alloc(pevent); pevent_filter_copy(copy, filter); pevent_filter_reset(filter); if (systems) { for (i = 0; systems[i]; i++) pevent_filter_add_filter_str(filter, systems[i]); } if (events) { for (i = 0; events[i] >= 0; i++) { event = pevent_find_event(filter->pevent, events[i]); if (event) pevent_filter_add_filter_str(filter, event->name); } } pevent_update_trivial(filter, copy, FILTER_TRIVIAL_BOTH); pevent_filter_free(copy); } int trace_filter_save_events(struct tracecmd_xml_handle *handle, struct event_filter *filter) { struct event_format *event; char **systems; gint *event_ids; char *str; int i; trace_filter_convert_filter_to_names(filter, &systems, &event_ids); for (i = 0; systems && systems[i]; i++) tracecmd_xml_write_element(handle, "System", systems[i]); for (i = 0; event_ids && event_ids[i] > 0; i++) { str = pevent_filter_make_string(filter, event_ids[i]); if (!str) continue; event = pevent_find_event(filter->pevent, event_ids[i]); if (event) { /* skip not filtered items */ if (strcmp(str, "FALSE") == 0) { free(str); continue; } tracecmd_xml_start_sub_system(handle, "Event"); tracecmd_xml_write_element(handle, "System", event->system); tracecmd_xml_write_element(handle, "Name", event->name); /* If this is has an advanced filter, include that too */ if (strcmp(str, "TRUE") != 0) { tracecmd_xml_write_element(handle, "Advanced", str); } tracecmd_xml_end_sub_system(handle); } free(str); } return 0; } int trace_filter_save_tasks(struct tracecmd_xml_handle *handle, struct filter_task *filter) { char buffer[100]; int *pids; int i; pids = filter_task_pids(filter); if (!pids) return -1; for (i = 0; pids[i] >= 0; i++) { snprintf(buffer, 100, "%d", pids[i]); tracecmd_xml_write_element(handle, "Task", buffer); } free(pids); return 0; } int trace_filter_load_events(struct event_filter *event_filter, struct tracecmd_xml_handle *handle, struct tracecmd_xml_system_node *node) { struct tracecmd_xml_system_node *child; const char *name; const char *system; const char *event; const char *value; char *buffer; while (node) { name = tracecmd_xml_node_type(node); if (strcmp(name, "System") == 0) { system = tracecmd_xml_node_value(handle, node); pevent_filter_add_filter_str(event_filter, system); } else if (strcmp(name, "Event") == 0) { system = NULL; event = NULL; value = NULL; child = tracecmd_xml_node_child(node); if (!child) return -1; do { name = tracecmd_xml_node_type(child); if (strcmp(name, "System") == 0) system = tracecmd_xml_node_value(handle, child); else if (strcmp(name, "Name") == 0) event = tracecmd_xml_node_value(handle, child); else if (strcmp(name, "Advanced") == 0) value = tracecmd_xml_node_value(handle, child); child = tracecmd_xml_node_next(child); } while (child); if (event || system) { if (event && system) { if (value) { buffer = malloc_or_die(strlen(event) + strlen(system) + strlen(value) + 3); sprintf(buffer, "%s/%s:%s", system, event, value); } else { buffer = malloc_or_die(strlen(event) + strlen(system) + 2); sprintf(buffer, "%s/%s", system, event); } } else { if (!event) event = system; if (value) { buffer = malloc_or_die(strlen(event) + strlen(value) + 2); sprintf(buffer, "%s:%s", event, value); } else { buffer = malloc_or_die(strlen(event) + 1); sprintf(buffer, "%s", event); } } pevent_filter_add_filter_str(event_filter, buffer); free(buffer); } } node = tracecmd_xml_node_next(node); } return 0; } int trace_filter_load_task_filter(struct filter_task *filter, struct tracecmd_xml_handle *handle, struct tracecmd_xml_system_node *node) { const char *name; const char *task; int pid; if (!filter) return 0; node = tracecmd_xml_node_child(node); while (node) { name = tracecmd_xml_node_type(node); if (strcmp(name, "Task") == 0) { task = tracecmd_xml_node_value(handle, node); pid = atoi(task); if (!filter_task_find_pid(filter, pid)) filter_task_add_pid(filter, pid); } node = tracecmd_xml_node_next(node); } return 0; } int trace_filter_load_filters(struct tracecmd_xml_handle *handle, const char *system_name, struct filter_task *task_filter, struct filter_task *hide_tasks) { struct tracecmd_xml_system *system; struct tracecmd_xml_system_node *syschild; const char *name; system = tracecmd_xml_find_system(handle, system_name); if (!system) return -1; syschild = tracecmd_xml_system_node(system); if (!syschild) goto out_free_sys; do { name = tracecmd_xml_node_type(syschild); if (strcmp(name, "TaskFilter") == 0) trace_filter_load_task_filter(task_filter, handle, syschild); else if (strcmp(name, "HideTasks") == 0) trace_filter_load_task_filter(hide_tasks, handle, syschild); syschild = tracecmd_xml_node_next(syschild); } while (syschild); tracecmd_xml_free_system(system); return 0; out_free_sys: tracecmd_xml_free_system(system); return -1; } int trace_filter_save_filters(struct tracecmd_xml_handle *handle, const char *system_name, struct filter_task *task_filter, struct filter_task *hide_tasks) { tracecmd_xml_start_system(handle, system_name); if (task_filter && filter_task_count(task_filter)) { tracecmd_xml_start_sub_system(handle, "TaskFilter"); trace_filter_save_tasks(handle, task_filter); tracecmd_xml_end_sub_system(handle); } if (hide_tasks && filter_task_count(hide_tasks)) { tracecmd_xml_start_sub_system(handle, "HideTasks"); trace_filter_save_tasks(handle, hide_tasks); tracecmd_xml_end_sub_system(handle); } tracecmd_xml_end_system(handle); return 0; } trace-cmd-2.5.3/trace-filter.h000066400000000000000000000147101246701203100161110ustar00rootroot00000000000000/* * Copyright (C) 2010 Red Hat Inc, Steven Rostedt * * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; version 2 of the License (not later!) * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; if not, see * * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ */ #ifndef _TRACE_FILTER_H #define _TRACE_FILTER_H #include #include "trace-xml.h" struct event_filter_list { struct event_filter_list *next; struct event *event; }; /** * trace_adv_filter_cb_func - callback type for advanced filter dialog * @accept: TRUE if the accept button was pressed, otherwise FALSE * @text: The text that was entered * @delete_event_filters: The list of event ids for filters to remove * @data: The data given passed in to the event dialog function * * If @accept is FALSE then @text and @delete_event_filters * should be ignored. @data is still valid. * * @text may be NULL or empty, and @delete_event_ids may also be NULL. * @delete_event_ids if not NULL, then ends with -1 */ typedef void (*trace_adv_filter_cb_func)(gboolean accept, const gchar *text, gint *delete_event_filters, gpointer data); /** * trace_task_cb_func - callback type for task dialog * @accept: TRUE if the accept button was pressed, otherwise FALSE * @selected: list of pids of tasks selected * @non_select: list of pids of tasks not selected * @data: The data given passed in to the event dialog function * * If @accept is FALSE then @selected and @non_select * should be ignored. @data is still valid. * * Both @selected and @non_select may be NULL, if either is not * NULL they will be sorted and end with -1. */ typedef void (*trace_task_cb_func)(gboolean accept, gint *selected, gint *non_selected, gpointer data); /** * trace_filter_event_cb_func - callback type for event dialog * @accept: TRUE if the accept button was pressed, otherwise FALSE * @all_events: TRUE if "All Events" was checked * @systems: NULL or a string array of systems terminated with NULL * @events: NULL or a int array of event ids terminated with -1 * @data: The data given passed in to the event dialog function * * If @accept is FALSE then @all_events, @systems, and @events * should be ignored. @data is still valid. * * If @all_events is TRUE then @systems and @events should be ignored. */ typedef void (*trace_filter_event_cb_func)(gboolean accept, gboolean all_events, char **systems, gint *events, gpointer data); void trace_adv_filter_dialog(struct tracecmd_input *handle, struct event_filter *event_filter, trace_adv_filter_cb_func func, gpointer data); void trace_task_dialog(struct tracecmd_input *handle, gint *tasks, gint *selected, trace_task_cb_func func, gpointer data); void trace_filter_event_dialog(struct tracecmd_input *handle, gboolean all_events, gchar **systems, gint *events, trace_filter_event_cb_func func, gpointer data); void trace_filter_pevent_dialog(struct pevent *pevent, gboolean all_events, gchar **systems, gint *events, trace_filter_event_cb_func func, gpointer data); void trace_filter_event_filter_dialog(struct tracecmd_input *handle, struct event_filter *filter, gboolean all_events, trace_filter_event_cb_func func, gpointer data); void trace_filter_convert_filter_to_names(struct event_filter *filter, gchar ***systems, gint **events); void trace_filter_convert_char_to_filter(struct event_filter *filter, gchar **systems, gint *events); /** * trace_filter_cpu_cb_func - callback type for CPU dialog * @accept: TRUE if the accept button was pressed, otherwise FALSE * @all_cpus: TRUE if "All CPUS" was checked * @selected_cpus: NULL or a cpu_mask with the cpus that were checked set. * @data: The data given passed in to the CPU dialog function * * If @accept is FALSE then @all_cpus and @selected_cpus should be ignored. * @data is still valid. * * If @all_cpus is TRUE then @selected_cpus should be ignored. */ typedef void (*trace_filter_cpu_cb_func)(gboolean accept, gboolean all_cpus, guint64 *selected_cpus, gpointer data); void trace_filter_cpu_dialog(gboolean all_cpus, guint64 *cpu_mask_selected, gint cpus, trace_filter_cpu_cb_func func, gpointer data); void trace_array_add(gint **array, gint *count, gint val); /* save and load filters */ int trace_filter_save_events(struct tracecmd_xml_handle *handle, struct event_filter *filter); int trace_filter_save_tasks(struct tracecmd_xml_handle *handle, struct filter_task *filter); int trace_filter_load_events(struct event_filter *event_filter, struct tracecmd_xml_handle *handle, struct tracecmd_xml_system_node *node); int trace_filter_load_task_filter(struct filter_task *filter, struct tracecmd_xml_handle *handle, struct tracecmd_xml_system_node *node); int trace_filter_load_filters(struct tracecmd_xml_handle *handle, const char *system_name, struct filter_task *task_filter, struct filter_task *hide_tasks); int trace_filter_save_filters(struct tracecmd_xml_handle *handle, const char *system_name, struct filter_task *task_filter, struct filter_task *hide_tasks); GtkWidget *trace_create_event_list_view(struct pevent *pevent, struct event_filter *filter, gboolean all_events, gchar **systems, gint *events); gint trace_extract_event_list_view(GtkWidget *event_view, gboolean *all_events, gchar ***systems, gint **events); int trace_update_event_view(GtkWidget *event_view, struct pevent *pevent, struct event_filter *filter, gboolean all_events, gchar **systems, gint *events); /* put here because there's no other place */ int str_cmp(const void *a, const void *b); int id_cmp(const void *a, const void *b); #endif /* _TRACE_FILTER_H */ trace-cmd-2.5.3/trace-ftrace.c000066400000000000000000000267511246701203100160730ustar00rootroot00000000000000/* * Copyright (C) 2009, 2010 Red Hat Inc, Steven Rostedt * * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ * This program is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; * version 2.1 of the License (not later!) * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this program; if not, see * * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ */ #include #include #include #include #include "trace-cmd.h" struct plugin_option trace_ftrace_options[] = { { .name = "tailprint", .plugin_alias = "fgraph", .description = "Print function name at function exit in function graph", }, { .name = "depth", .plugin_alias = "fgraph", .description = "Show the depth of each entry", }, { .name = NULL, } }; static struct plugin_option *fgraph_tail = &trace_ftrace_options[0]; static struct plugin_option *fgraph_depth = &trace_ftrace_options[1]; static void find_long_size(struct tracecmd_ftrace *finfo) { finfo->long_size = tracecmd_long_size(finfo->handle); } #define long_size_check(handle) \ do { \ if (!finfo->long_size) \ find_long_size(finfo); \ } while (0) static int find_ret_event(struct tracecmd_ftrace *finfo, struct pevent *pevent) { struct event_format *event; /* Store the func ret id and event for later use */ event = pevent_find_event_by_name(pevent, "ftrace", "funcgraph_exit"); if (!event) return -1; finfo->fgraph_ret_id = event->id; finfo->fgraph_ret_event = event; return 0; } #define ret_event_check(finfo, pevent) \ do { \ if (!finfo->fgraph_ret_event && find_ret_event(finfo, pevent) < 0) \ return -1; \ } while (0) static int function_handler(struct trace_seq *s, struct pevent_record *record, struct event_format *event, void *context) { struct pevent *pevent = event->pevent; unsigned long long function; const char *func; if (pevent_get_field_val(s, event, "ip", record, &function, 1)) return trace_seq_putc(s, '!'); func = pevent_find_function(pevent, function); if (func) trace_seq_printf(s, "%s <-- ", func); else trace_seq_printf(s, "0x%llx", function); if (pevent_get_field_val(s, event, "parent_ip", record, &function, 1)) return trace_seq_putc(s, '!'); func = pevent_find_function(pevent, function); if (func) trace_seq_printf(s, "%s", func); else trace_seq_printf(s, "0x%llx", function); return 0; } #define TRACE_GRAPH_INDENT 2 static struct pevent_record * get_return_for_leaf(struct trace_seq *s, int cpu, int cur_pid, unsigned long long cur_func, struct pevent_record *next, struct tracecmd_ftrace *finfo) { unsigned long long val; unsigned long long type; unsigned long long pid; /* Searching a common field, can use any event */ if (pevent_get_common_field_val(s, finfo->fgraph_ret_event, "common_type", next, &type, 1)) return NULL; if (type != finfo->fgraph_ret_id) return NULL; if (pevent_get_common_field_val(s, finfo->fgraph_ret_event, "common_pid", next, &pid, 1)) return NULL; if (cur_pid != pid) return NULL; /* We aleady know this is a funcgraph_ret_event */ if (pevent_get_field_val(s, finfo->fgraph_ret_event, "func", next, &val, 1)) return NULL; if (cur_func != val) return NULL; /* this is a leaf, now advance the iterator */ return tracecmd_read_data(tracecmd_curr_thread_handle, cpu); } /* Signal a overhead of time execution to the output */ static void print_graph_overhead(struct trace_seq *s, unsigned long long duration) { /* Non nested entry or return */ if (duration == ~0ULL) return (void)trace_seq_printf(s, " "); /* Duration exceeded 100 msecs */ if (duration > 100000ULL) return (void)trace_seq_printf(s, "! "); /* Duration exceeded 10 msecs */ if (duration > 10000ULL) return (void)trace_seq_printf(s, "+ "); trace_seq_printf(s, " "); } static void print_graph_duration(struct trace_seq *s, unsigned long long duration) { unsigned long usecs = duration / 1000; unsigned long nsecs_rem = duration % 1000; /* log10(ULONG_MAX) + '\0' */ char msecs_str[21]; char nsecs_str[5]; int len; int i; sprintf(msecs_str, "%lu", usecs); /* Print msecs */ len = s->len; trace_seq_printf(s, "%lu", usecs); /* Print nsecs (we don't want to exceed 7 numbers) */ if ((s->len - len) < 7) { snprintf(nsecs_str, MIN(sizeof(nsecs_str), 8 - len), "%03lu", nsecs_rem); trace_seq_printf(s, ".%s", nsecs_str); } len = s->len - len; trace_seq_puts(s, " us "); /* Print remaining spaces to fit the row's width */ for (i = len; i < 7; i++) trace_seq_putc(s, ' '); trace_seq_puts(s, "| "); } static int print_graph_entry_leaf(struct trace_seq *s, struct event_format *event, struct pevent_record *record, struct pevent_record *ret_rec, struct tracecmd_ftrace *finfo) { struct pevent *pevent = event->pevent; unsigned long long rettime, calltime; unsigned long long duration, depth; unsigned long long val; const char *func; int ret; int i; if (pevent_get_field_val(s, finfo->fgraph_ret_event, "rettime", ret_rec, &rettime, 1)) return trace_seq_putc(s, '!'); if (pevent_get_field_val(s, finfo->fgraph_ret_event, "calltime", ret_rec, &calltime, 1)) return trace_seq_putc(s, '!'); duration = rettime - calltime; /* Overhead */ print_graph_overhead(s, duration); /* Duration */ print_graph_duration(s, duration); if (pevent_get_field_val(s, event, "depth", record, &depth, 1)) return trace_seq_putc(s, '!'); /* Function */ for (i = 0; i < (int)(depth * TRACE_GRAPH_INDENT); i++) trace_seq_putc(s, ' '); if (pevent_get_field_val(s, event, "func", record, &val, 1)) return trace_seq_putc(s, '!'); func = pevent_find_function(pevent, val); if (func) ret = trace_seq_printf(s, "%s();", func); else ret = trace_seq_printf(s, "%llx();", val); if (ret && fgraph_depth->set) ret = trace_seq_printf(s, " (%lld)", depth); return ret; } static int print_graph_nested(struct trace_seq *s, struct event_format *event, struct pevent_record *record) { struct pevent *pevent = event->pevent; unsigned long long depth; unsigned long long val; const char *func; int ret; int i; /* No overhead */ print_graph_overhead(s, -1); /* No time */ trace_seq_puts(s, " | "); if (pevent_get_field_val(s, event, "depth", record, &depth, 1)) return trace_seq_putc(s, '!'); /* Function */ for (i = 0; i < (int)(depth * TRACE_GRAPH_INDENT); i++) trace_seq_putc(s, ' '); if (pevent_get_field_val(s, event, "func", record, &val, 1)) return trace_seq_putc(s, '!'); func = pevent_find_function(pevent, val); if (func) ret = trace_seq_printf(s, "%s() {", func); else ret = trace_seq_printf(s, "%llx() {", val); if (ret && fgraph_depth->set) ret = trace_seq_printf(s, " (%lld)", depth); return ret; } static int fgraph_ent_handler(struct trace_seq *s, struct pevent_record *record, struct event_format *event, void *context) { struct tracecmd_ftrace *finfo = context; struct pevent_record *rec; unsigned long long val, pid; int cpu = record->cpu; ret_event_check(finfo, event->pevent); if (pevent_get_common_field_val(s, event, "common_pid", record, &pid, 1)) return trace_seq_putc(s, '!'); if (pevent_get_field_val(s, event, "func", record, &val, 1)) return trace_seq_putc(s, '!'); rec = tracecmd_peek_data(tracecmd_curr_thread_handle, cpu); if (rec) rec = get_return_for_leaf(s, cpu, pid, val, rec, finfo); if (rec) { /* * If this is a leaf function, then get_return_for_leaf * returns the return of the function */ print_graph_entry_leaf(s, event, record, rec, finfo); free_record(rec); } else print_graph_nested(s, event, record); return 0; } static int fgraph_ret_handler(struct trace_seq *s, struct pevent_record *record, struct event_format *event, void *context) { struct tracecmd_ftrace *finfo = context; unsigned long long rettime, calltime; unsigned long long duration, depth; unsigned long long val; const char *func; int i; ret_event_check(finfo, event->pevent); if (pevent_get_field_val(s, event, "rettime", record, &rettime, 1)) return trace_seq_putc(s, '!'); if (pevent_get_field_val(s, event, "calltime", record, &calltime, 1)) return trace_seq_putc(s, '!'); duration = rettime - calltime; /* Overhead */ print_graph_overhead(s, duration); /* Duration */ print_graph_duration(s, duration); if (pevent_get_field_val(s, event, "depth", record, &depth, 1)) return trace_seq_putc(s, '!'); /* Function */ for (i = 0; i < (int)(depth * TRACE_GRAPH_INDENT); i++) trace_seq_putc(s, ' '); trace_seq_putc(s, '}'); if (fgraph_tail->set) { if (pevent_get_field_val(s, event, "func", record, &val, 0)) return 0; func = pevent_find_function(event->pevent, val); if (!func) return 0; trace_seq_printf(s, " /* %s */", func); } if (fgraph_depth->set) trace_seq_printf(s, " (%lld)", depth); return 0; } static int trace_stack_handler(struct trace_seq *s, struct pevent_record *record, struct event_format *event, void *context) { struct tracecmd_ftrace *finfo = context; struct format_field *field; unsigned long long addr; const char *func; void *data = record->data; field = pevent_find_any_field(event, "caller"); if (!field) { trace_seq_printf(s, "", "caller"); return 0; } trace_seq_puts(s, "\n"); long_size_check(finfo); for (data += field->offset; data < record->data + record->size; data += finfo->long_size) { addr = pevent_read_number(event->pevent, data, finfo->long_size); if ((finfo->long_size == 8 && addr == (unsigned long long)-1) || ((int)addr == -1)) break; func = pevent_find_function(event->pevent, addr); if (func) trace_seq_printf(s, "=> %s (%llx)\n", func, addr); else trace_seq_printf(s, "=> %llx\n", addr); } return 0; } /** * tracecmd_ftrace_load_options - load the ftrace options * * This routine is used for trace-cmd list, to load the builtin * ftrace options in order to list them. As the list command does * not load a trace.dat file where this would normally be loaded. */ void tracecmd_ftrace_load_options(void) { trace_util_add_options("ftrace", trace_ftrace_options); } int tracecmd_ftrace_overrides(struct tracecmd_input *handle, struct tracecmd_ftrace *finfo) { struct pevent *pevent; struct event_format *event; finfo->handle = handle; pevent = tracecmd_get_pevent(handle); pevent_register_event_handler(pevent, -1, "ftrace", "function", function_handler, NULL); pevent_register_event_handler(pevent, -1, "ftrace", "funcgraph_entry", fgraph_ent_handler, finfo); pevent_register_event_handler(pevent, -1, "ftrace", "funcgraph_exit", fgraph_ret_handler, finfo); pevent_register_event_handler(pevent, -1, "ftrace", "kernel_stack", trace_stack_handler, finfo); trace_util_add_options("ftrace", trace_ftrace_options); /* Store the func ret id and event for later use */ event = pevent_find_event_by_name(pevent, "ftrace", "funcgraph_exit"); if (!event) return 0; finfo->long_size = tracecmd_long_size(handle); finfo->fgraph_ret_id = event->id; finfo->fgraph_ret_event = event; return 0; } trace-cmd-2.5.3/trace-graph-main.c000066400000000000000000000270501246701203100166430ustar00rootroot00000000000000/* * Copyright (C) 2009, 2010 Red Hat Inc, Steven Rostedt * * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; version 2 of the License (not later!) * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; if not, see * * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ */ #include #include #include #include #include #include #include #include "trace-cmd.h" #include "trace-graph.h" #include "trace-filter.h" #include "trace-gui.h" #include "version.h" #define version "0.1.1" #define TRACE_WIDTH 800 #define TRACE_HEIGHT 600 #define default_input_file "trace.dat" static char *input_file; static struct graph_info *ginfo; void usage(char *prog) { printf("Usage: %s\n", prog); printf(" -h Display this help message\n"); printf(" -i input_file, default is %s\n", default_input_file); } /* Callback for the clicked signal of the Load button */ static void load_clicked (gpointer data) { struct graph_info *ginfo = data; struct tracecmd_input *handle; gchar *filename; filename = trace_get_file_dialog("Load File", NULL, FALSE); if (!filename) return; handle = tracecmd_open(filename); if (handle) { trace_graph_load_handle(ginfo, handle); /* Free handle when freeing graph */ tracecmd_close(handle); } g_free(filename); } /* Callback for the clicked signal of the Exit button */ static void exit_clicked (GtkWidget *widget, gpointer data) { gtk_widget_destroy (GTK_WIDGET (data)); /* the user data points to the main window */ tracecmd_close(ginfo->handle); gtk_main_quit (); } /* Callback for the delete_event signal of the main application window */ static gint delete_event (GtkWidget *widget, GdkEvent *event, gpointer data) { gtk_widget_destroy (widget); /* destroy the main window */ tracecmd_close(ginfo->handle); gtk_main_quit (); return TRUE; } /* Callback for the clicked signal of the Events filter button */ static void events_clicked (gpointer data) { struct graph_info *ginfo = data; gboolean all_events = TRUE; if (!ginfo->handle) return; all_events = ginfo->all_events; trace_filter_event_filter_dialog(ginfo->handle, ginfo->event_filter, all_events, trace_graph_event_filter_callback, ginfo); } /* Callback for the clicked signal of the Advanced filter button */ static void adv_filter_clicked (gpointer data) { struct graph_info *ginfo = data; trace_adv_filter_dialog(ginfo->handle, ginfo->event_filter, trace_graph_adv_filter_callback, ginfo); } /* Callback for the clicked signal of the plot CPUs button */ static void plot_cpu_clicked (gpointer data) { struct graph_info *ginfo = data; gboolean all_cpus; guint64 *cpu_mask; if (!ginfo->handle) return; graph_plot_cpus_plotted(ginfo, &all_cpus, &cpu_mask); trace_filter_cpu_dialog(all_cpus, cpu_mask, ginfo->cpus, graph_plot_cpus_update_callback, ginfo); g_free(cpu_mask); } /* Callback for the clicked signal of the plot tasks button */ static void plot_tasks_clicked (gpointer data) { struct graph_info *ginfo = data; gint *selected; gint *tasks; if (!ginfo->handle) return; tasks = trace_graph_task_list(ginfo); graph_plot_task_plotted(ginfo, &selected); trace_task_dialog(ginfo->handle, tasks, selected, graph_plot_task_update_callback, ginfo); free(tasks); free(selected); } /* Callback for the clicked signal of the Load Filters button */ static void load_filters_clicked (gpointer data) { struct graph_info *ginfo = data; struct tracecmd_xml_handle *handle; gchar *filename; filename = trace_get_file_dialog("Load Filters", NULL, FALSE); if (!filename) return; handle = tracecmd_xml_open(filename); if (!handle) warning("Could not open %s", filename); g_free(filename); trace_filter_load_filters(handle, "GraphTaskFilter", ginfo->task_filter, ginfo->hide_tasks); trace_graph_load_filters(ginfo, handle); tracecmd_xml_close(handle); } /* Callback for the clicked signal of the Save Filters button */ static void save_filters_clicked (gpointer data) { struct graph_info *ginfo = data; struct tracecmd_xml_handle *handle; gchar *filename; filename = trace_get_file_dialog("Save Filters", "Save", TRUE); if (!filename) return; handle = tracecmd_xml_create(filename, VERSION_STRING); if (!handle) warning("Could not create %s", filename); g_free(filename); trace_filter_save_filters(handle, "GraphTaskFilter", ginfo->task_filter, ginfo->hide_tasks); trace_graph_save_filters(ginfo, handle); tracecmd_xml_close(handle); } void trace_graph(int argc, char **argv) { struct tracecmd_input *handle = NULL; struct stat st; GtkWidget *window; GtkWidget *vbox; GtkWidget *hbox; GtkWidget *menu_bar; GtkWidget *menu; GtkWidget *menu_item; GtkWidget *sub_item; GtkWidget *widget; GtkWidget *statusbar; int c; int ret; gtk_init(&argc, &argv); while ((c = getopt(argc, argv, "hi:")) != -1) { switch(c) { case 'h': usage(basename(argv[0])); return; case 'i': input_file = optarg; break; default: /* assume the other options are for gtk */ break; } } if ((argc - optind) >= 1) { if (input_file) usage(basename(argv[0])); input_file = argv[optind]; } if (!input_file) { ret = stat(default_input_file, &st); if (ret >= 0) input_file = default_input_file; } if (input_file) handle = tracecmd_open(input_file); /* graph struct is used by handlers */ ginfo = trace_graph_create(handle); /* Free handle when freeing graph */ if (handle) tracecmd_close(handle); /* --- Main window --- */ window = gtk_window_new(GTK_WINDOW_TOPLEVEL); trace_dialog_register_window(window); /* --- Top Level Vbox --- */ vbox = gtk_vbox_new(FALSE, 0); gtk_container_add(GTK_CONTAINER (window), vbox); gtk_widget_show(vbox); /* --- Menu Bar --- */ menu_bar = gtk_menu_bar_new(); gtk_box_pack_start(GTK_BOX (vbox), menu_bar, FALSE, FALSE, 0); gtk_widget_show(menu_bar); /* --- File Option --- */ menu_item = gtk_menu_item_new_with_label("File"); gtk_widget_show(menu_item); gtk_menu_bar_append(GTK_MENU_BAR (menu_bar), menu_item); menu = gtk_menu_new(); /* Don't need to show menus */ /* --- File - Load Option --- */ sub_item = gtk_menu_item_new_with_label("Load info"); /* Add them to the menu */ gtk_menu_shell_append(GTK_MENU_SHELL (menu), sub_item); /* We can attach the Quit menu item to our exit function */ g_signal_connect_swapped (G_OBJECT (sub_item), "activate", G_CALLBACK (load_clicked), (gpointer) ginfo); /* We do need to show menu items */ gtk_widget_show(sub_item); /* --- File - Load Filter Option --- */ sub_item = gtk_menu_item_new_with_label("Load filters"); /* Add them to the menu */ gtk_menu_shell_append(GTK_MENU_SHELL (menu), sub_item); g_signal_connect_swapped (G_OBJECT (sub_item), "activate", G_CALLBACK (load_filters_clicked), (gpointer) ginfo); /* We do need to show menu items */ gtk_widget_show(sub_item); /* --- File - Save Filter Option --- */ sub_item = gtk_menu_item_new_with_label("Save filters"); /* Add them to the menu */ gtk_menu_shell_append(GTK_MENU_SHELL (menu), sub_item); g_signal_connect_swapped (G_OBJECT (sub_item), "activate", G_CALLBACK (save_filters_clicked), (gpointer) ginfo); /* We do need to show menu items */ gtk_widget_show(sub_item); /* --- File - Quit Option --- */ sub_item = gtk_menu_item_new_with_label("Quit"); /* Add them to the menu */ gtk_menu_shell_append(GTK_MENU_SHELL (menu), sub_item); /* We can attach the Quit menu item to our exit function */ g_signal_connect_swapped (G_OBJECT (sub_item), "activate", G_CALLBACK (exit_clicked), (gpointer) window); /* We do need to show menu items */ gtk_widget_show(sub_item); gtk_menu_item_set_submenu(GTK_MENU_ITEM (menu_item), menu); /* --- end File options --- */ /* --- Filter Option --- */ menu_item = gtk_menu_item_new_with_label("Filter"); gtk_widget_show(menu_item); gtk_menu_bar_append(GTK_MENU_BAR (menu_bar), menu_item); menu = gtk_menu_new(); /* Don't need to show menus */ /* --- Filter - Events Option --- */ sub_item = gtk_menu_item_new_with_label("events"); /* Add them to the menu */ gtk_menu_shell_append(GTK_MENU_SHELL (menu), sub_item); /* We can attach the Quit menu item to our exit function */ g_signal_connect_swapped (G_OBJECT (sub_item), "activate", G_CALLBACK (events_clicked), (gpointer) ginfo); /* We do need to show menu items */ gtk_widget_show(sub_item); /* --- Filter - Advanced Events Option --- */ sub_item = gtk_menu_item_new_with_label("advanced event filter"); /* Add them to the menu */ gtk_menu_shell_append(GTK_MENU_SHELL (menu), sub_item); /* We can attach the Quit menu item to our exit function */ g_signal_connect_swapped (G_OBJECT (sub_item), "activate", G_CALLBACK (adv_filter_clicked), (gpointer) ginfo); /* We do need to show menu items */ gtk_widget_show(sub_item); /* --- End Filter Options --- */ gtk_menu_item_set_submenu(GTK_MENU_ITEM (menu_item), menu); /* --- Plot Option --- */ menu_item = gtk_menu_item_new_with_label("Plots"); gtk_widget_show(menu_item); gtk_menu_bar_append(GTK_MENU_BAR (menu_bar), menu_item); menu = gtk_menu_new(); /* Don't need to show menus */ /* --- Plot - CPUs Option --- */ sub_item = gtk_menu_item_new_with_label("CPUs"); /* Add them to the menu */ gtk_menu_shell_append(GTK_MENU_SHELL (menu), sub_item); /* We can attach the Quit menu item to our exit function */ g_signal_connect_swapped (G_OBJECT (sub_item), "activate", G_CALLBACK (plot_cpu_clicked), (gpointer) ginfo); /* We do need to show menu items */ gtk_widget_show(sub_item); /* --- Plot - Tasks Option --- */ sub_item = gtk_menu_item_new_with_label("Tasks"); /* Add them to the menu */ gtk_menu_shell_append(GTK_MENU_SHELL (menu), sub_item); /* We can attach the Quit menu item to our exit function */ g_signal_connect_swapped (G_OBJECT (sub_item), "activate", G_CALLBACK (plot_tasks_clicked), (gpointer) ginfo); /* We do need to show menu items */ gtk_widget_show(sub_item); /* --- End Plot Options --- */ gtk_menu_item_set_submenu(GTK_MENU_ITEM (menu_item), menu); /* --- Top Level Hbox --- */ hbox = gtk_hbox_new(FALSE, 0); gtk_box_pack_start(GTK_BOX(vbox), hbox, TRUE, TRUE, 0); gtk_widget_show(hbox); /* --- Set up the Graph --- */ widget = trace_graph_get_window(ginfo); gtk_box_pack_start(GTK_BOX (hbox), widget, TRUE, TRUE, 0); gtk_widget_show(widget); /* --- Set up Status Bar --- */ statusbar = trace_status_bar_new(); gtk_box_pack_start(GTK_BOX(vbox), statusbar, FALSE, FALSE, 0); gtk_widget_show(statusbar); /********************************************** * Main Window **********************************************/ /* Connect to the delete_event signal and Run the application */ gtk_signal_connect (GTK_OBJECT (window), "delete_event", (GtkSignalFunc) delete_event, NULL); gtk_widget_set_size_request(window, TRACE_WIDTH, TRACE_HEIGHT); gtk_widget_show (window); gtk_main (); } int main(int argc, char **argv) { trace_graph(argc, argv); return 0; } trace-cmd-2.5.3/trace-graph.c000066400000000000000000002105501246701203100157200ustar00rootroot00000000000000/* * Copyright (C) 2009, 2010 Red Hat Inc, Steven Rostedt * * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; version 2 of the License (not later!) * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; if not, see * * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ */ #include #include #include #include #include #include #include "trace-compat.h" #include "trace-cmd.h" #include "trace-local.h" #include "trace-graph.h" #include "trace-filter-hash.h" #include "trace-filter.h" #include "trace-gui.h" #include "event-utils.h" #define DEBUG_LEVEL 0 #if DEBUG_LEVEL > 0 # define dprintf(l, x...) \ do { \ if (l <= DEBUG_LEVEL) \ printf(x); \ } while (0) #else # define dprintf(l, x...) do { if (0) printf(x); } while (0) #endif #define MAX_WIDTH 10000 #define PLOT_SIZE 10 #define PLOT_BOX_SIZE PLOT_SIZE #define PLOT_GIVE 2 #define PLOT_BEGIN 80 #define PLOT_SEP 50 #define PLOT_LINE(plot) (PLOT_SEP * (plot) + PLOT_BEGIN + PLOT_SIZE) #define PLOT_TOP(plot) (PLOT_LINE(plot) - PLOT_SIZE * 2) #define PLOT_BOX_TOP(plot) (PLOT_LINE(plot) - PLOT_SIZE) #define PLOT_BOTTOM(plot) (PLOT_LINE(plot)-1) #define PLOT_BOX_BOTTOM(plot) (PLOT_LINE(plot)) #define PLOT_SPACE(plots) (PLOT_SEP * (plots) + PLOT_BEGIN) #define PLOT_LABEL(plot) (PLOT_TOP(plot)) #define PLOT_X 5 static gint largest_plot_label; static GdkGC *green; static GdkGC *red; static void redraw_pixmap_backend(struct graph_info *ginfo); static void update_label_window(struct graph_info *ginfo); struct task_list { struct task_list *next; gint pid; }; static guint get_task_hash_key(gint pid) { return trace_hash(pid) % TASK_HASH_SIZE; } static struct task_list *find_task_hash(struct graph_info *ginfo, gint key, gint pid) { struct task_list *list; for (list = ginfo->tasks[key]; list; list = list->next) { if (list->pid == pid) return list; } return NULL; } static struct task_list *add_task_hash(struct graph_info *ginfo, int pid) { struct task_list *list; guint key = get_task_hash_key(pid); list = find_task_hash(ginfo, key, pid); if (list) return list; list = malloc_or_die(sizeof(*list)); list->pid = pid; list->next = ginfo->tasks[key]; ginfo->tasks[key] = list; return list; } static void free_task_hash(struct graph_info *ginfo) { struct task_list *list; int i; for (i = 0; i < TASK_HASH_SIZE; i++) { while (ginfo->tasks[i]) { list = ginfo->tasks[i]; ginfo->tasks[i] = list->next; free(list); } } } /** * trace_graph_task_list - return an allocated list of all found tasks * @ginfo: The graph info structure * * Returns an allocated list of pids found in the graph, ending * with a -1. This array must be freed with free(). */ gint *trace_graph_task_list(struct graph_info *ginfo) { struct task_list *list; gint *pids; gint count = 0; gint i; for (i = 0; i < TASK_HASH_SIZE; i++) { list = ginfo->tasks[i]; while (list) { if (count) pids = realloc(pids, sizeof(*pids) * (count + 2)); else pids = malloc(sizeof(*pids) * 2); pids[count++] = list->pid; pids[count] = -1; list = list->next; } } return pids; } static void convert_nano(unsigned long long time, unsigned long *sec, unsigned long *usec) { *sec = time / 1000000000ULL; *usec = (time / 1000) % 1000000; } static int convert_time_to_x(struct graph_info *ginfo, guint64 time) { if (time < ginfo->view_start_time) return 0; return (time - ginfo->view_start_time) * ginfo->resolution; } static guint64 convert_x_to_time(struct graph_info *ginfo, gint x) { double d = x; return (guint64)(d / ginfo->resolution) + ginfo->view_start_time; } static void print_time(unsigned long long time) { unsigned long sec, usec; if (!DEBUG_LEVEL) return; convert_nano(time, &sec, &usec); printf("%lu.%06lu", sec, usec); } static void init_event_cache(struct graph_info *ginfo) { ginfo->ftrace_sched_switch_id = -1; ginfo->event_sched_switch_id = -1; ginfo->event_wakeup_id = -1; ginfo->event_wakeup_new_id = -1; ginfo->event_pid_field = NULL; ginfo->event_comm_field = NULL; ginfo->ftrace_pid_field = NULL; ginfo->ftrace_comm_field = NULL; ginfo->wakeup_pid_field = NULL; ginfo->wakeup_success_field = NULL; ginfo->wakeup_new_pid_field = NULL; ginfo->wakeup_new_success_field = NULL; /* * The first time reading the through the list * test the sched_switch for comms that did not make * it into the pevent command line list. */ ginfo->read_comms = TRUE; } struct filter_task_item * trace_graph_filter_task_find_pid(struct graph_info *ginfo, gint pid) { return filter_task_find_pid(ginfo->task_filter, pid); } struct filter_task_item * trace_graph_hide_task_find_pid(struct graph_info *ginfo, gint pid) { return filter_task_find_pid(ginfo->hide_tasks, pid); } static void graph_filter_task_add_pid(struct graph_info *ginfo, gint pid) { filter_task_add_pid(ginfo->task_filter, pid); ginfo->filter_available = 1; } static void graph_filter_task_remove_pid(struct graph_info *ginfo, gint pid) { filter_task_remove_pid(ginfo->task_filter, pid); if (!filter_task_count(ginfo->task_filter) && !filter_task_count(ginfo->hide_tasks)) { ginfo->filter_available = 0; ginfo->filter_enabled = 0; } } static void graph_hide_task_add_pid(struct graph_info *ginfo, gint pid) { filter_task_add_pid(ginfo->hide_tasks, pid); ginfo->filter_available = 1; } static void graph_hide_task_remove_pid(struct graph_info *ginfo, gint pid) { filter_task_remove_pid(ginfo->hide_tasks, pid); if (!filter_task_count(ginfo->task_filter) && !filter_task_count(ginfo->hide_tasks)) { ginfo->filter_available = 0; ginfo->filter_enabled = 0; } } static void graph_filter_task_clear(struct graph_info *ginfo) { filter_task_clear(ginfo->task_filter); filter_task_clear(ginfo->hide_tasks); ginfo->filter_available = 0; ginfo->filter_enabled = 0; } gboolean trace_graph_filter_on_event(struct graph_info *ginfo, struct pevent_record *record) { int ret; if (!record) return TRUE; if (ginfo->all_events) return FALSE; ret = pevent_filter_match(ginfo->event_filter, record); return ret == FILTER_MATCH ? FALSE : TRUE; } gboolean trace_graph_filter_on_task(struct graph_info *ginfo, gint pid) { gboolean filter; filter = FALSE; if (ginfo->filter_enabled && ((filter_task_count(ginfo->task_filter) && !trace_graph_filter_task_find_pid(ginfo, pid)) || (filter_task_count(ginfo->hide_tasks) && trace_graph_hide_task_find_pid(ginfo, pid)))) filter = TRUE; return filter; } static void __update_with_backend(struct graph_info *ginfo, gint x, gint y, gint width, gint height) { gdk_draw_drawable(ginfo->draw->window, ginfo->draw->style->fg_gc[GTK_WIDGET_STATE(ginfo->draw)], ginfo->curr_pixmap, x, y, x, y, width, height); } static void update_label_time(GtkWidget *label, gint64 time) { unsigned long sec, usec; struct trace_seq s; char *min = ""; if (time < 0) { time *= -1; min = "-"; } convert_nano(time, &sec, &usec); trace_seq_init(&s); trace_seq_printf(&s, "%s%lu.%06lu", min, sec, usec); gtk_label_set_text(GTK_LABEL(label), s.buffer); trace_seq_destroy(&s); } static void update_cursor(struct graph_info *ginfo) { update_label_time(ginfo->cursor_label, ginfo->cursor); } static void update_pointer(struct graph_info *ginfo, gint x) { guint64 time; time = convert_x_to_time(ginfo, x); update_label_time(ginfo->pointer_time, time); } static void update_marka(struct graph_info *ginfo, gint x) { guint64 timeA; timeA = convert_x_to_time(ginfo, x); ginfo->marka_time = timeA; update_label_time(ginfo->marka_label, timeA); } static void update_markb(struct graph_info *ginfo, guint x) { gint64 timeA, timeB; timeA = ginfo->marka_time; timeB = convert_x_to_time(ginfo, x); ginfo->markb_time = timeB; update_label_time(ginfo->markb_label, timeB); update_label_time(ginfo->delta_label, timeB - timeA); } static void draw_cursor(struct graph_info *ginfo) { gint x; if (!ginfo->cursor) return; update_cursor(ginfo); if (ginfo->cursor < ginfo->view_start_time || ginfo->cursor > ginfo->view_end_time) return; x = convert_time_to_x(ginfo, ginfo->cursor); gdk_draw_line(ginfo->draw->window, ginfo->draw->style->mid_gc[3], x, 0, x, ginfo->draw->allocation.height); } static void draw_marka(struct graph_info *ginfo) { gint x; if (!ginfo->show_marka) return; x = convert_time_to_x(ginfo, ginfo->marka_time); gdk_draw_line(ginfo->draw->window, green, x, 0, x, ginfo->draw->allocation.height); } static void draw_markb(struct graph_info *ginfo) { gint x; if (!ginfo->show_markb) return; x = convert_time_to_x(ginfo, ginfo->markb_time); gdk_draw_line(ginfo->draw->window, red, x, 0, x, ginfo->draw->allocation.height); } static void update_with_backend(struct graph_info *ginfo, gint x, gint y, gint width, gint height) { __update_with_backend(ginfo, x, y, width, height); draw_cursor(ginfo); draw_markb(ginfo); draw_marka(ginfo); } static gboolean expose_event(GtkWidget *widget, GdkEventExpose *event, gpointer data) { struct graph_info *ginfo = data; update_with_backend(ginfo, event->area.x, event->area.y, event->area.width, event->area.height); return FALSE; } static void draw_line(GtkWidget *widget, gdouble x, struct graph_info *ginfo) { gdk_draw_line(widget->window, widget->style->black_gc, x, 0, x, widget->allocation.height); } static void clear_line(struct graph_info *ginfo, gint x) { if (x) x--; update_with_backend(ginfo, x, 0, x+2, ginfo->draw->allocation.height); } static void clear_info_box(struct graph_info *ginfo) { update_with_backend(ginfo, ginfo->plot_data_x, ginfo->plot_data_y, ginfo->plot_data_w, ginfo->plot_data_h); } static void redraw_graph(struct graph_info *ginfo) { gdouble height; gdouble width; redraw_pixmap_backend(ginfo); width = ginfo->draw->allocation.width; height = ginfo->draw->allocation.height; update_with_backend(ginfo, 0, 0, width, height); } void trace_graph_filter_toggle(struct graph_info *ginfo) { ginfo->filter_enabled ^= 1; redraw_graph(ginfo); } static void filter_enable_clicked (gpointer data) { struct graph_info *ginfo = data; trace_graph_filter_toggle(ginfo); } void trace_graph_filter_add_remove_task(struct graph_info *ginfo, gint pid) { gint filter_enabled = ginfo->filter_enabled; struct filter_task_item *task; task = trace_graph_filter_task_find_pid(ginfo, pid); if (task) graph_filter_task_remove_pid(ginfo, task->pid); else graph_filter_task_add_pid(ginfo, pid); if (ginfo->callbacks && ginfo->callbacks->filter) ginfo->callbacks->filter(ginfo, ginfo->task_filter, ginfo->hide_tasks); if (filter_enabled) redraw_graph(ginfo); } void trace_graph_filter_hide_show_task(struct graph_info *ginfo, gint pid) { gint filter_enabled = ginfo->filter_enabled; struct filter_task_item *task; task = trace_graph_hide_task_find_pid(ginfo, pid); if (task) graph_hide_task_remove_pid(ginfo, task->pid); else graph_hide_task_add_pid(ginfo, pid); if (ginfo->callbacks && ginfo->callbacks->filter) ginfo->callbacks->filter(ginfo, ginfo->task_filter, ginfo->hide_tasks); if (filter_enabled) redraw_graph(ginfo); } static void filter_add_task_clicked (gpointer data) { struct graph_info *ginfo = data; trace_graph_filter_add_remove_task(ginfo, ginfo->filter_task_selected); } static void filter_hide_task_clicked (gpointer data) { struct graph_info *ginfo = data; trace_graph_filter_hide_show_task(ginfo, ginfo->filter_task_selected); } void trace_graph_clear_tasks(struct graph_info *ginfo) { gint filter_enabled = ginfo->filter_enabled; graph_filter_task_clear(ginfo); if (ginfo->callbacks && ginfo->callbacks->filter) ginfo->callbacks->filter(ginfo, ginfo->task_filter, ginfo->hide_tasks); if (filter_enabled) redraw_graph(ginfo); } void trace_graph_update_filters(struct graph_info *ginfo, struct filter_task *task_filter, struct filter_task *hide_tasks) { /* Make sure the filter passed in is not the filter we use */ if (task_filter != ginfo->task_filter) { filter_task_hash_free(ginfo->task_filter); ginfo->task_filter = filter_task_hash_copy(task_filter); } if (hide_tasks != ginfo->hide_tasks) { filter_task_hash_free(ginfo->hide_tasks); ginfo->hide_tasks = filter_task_hash_copy(hide_tasks); } if (ginfo->callbacks && ginfo->callbacks->filter) ginfo->callbacks->filter(ginfo, ginfo->task_filter, ginfo->hide_tasks); if (ginfo->filter_enabled) redraw_graph(ginfo); if (filter_task_count(ginfo->task_filter) || filter_task_count(ginfo->hide_tasks)) ginfo->filter_available = 1; else { ginfo->filter_enabled = 0; ginfo->filter_available = 0; } } void trace_graph_refresh_filters(struct graph_info *ginfo) { trace_graph_update_filters(ginfo, ginfo->task_filter, ginfo->hide_tasks); } static void filter_clear_tasks_clicked (gpointer data) { struct graph_info *ginfo = data; trace_graph_clear_tasks(ginfo); } static void plot_task_clicked (gpointer data) { struct graph_info *ginfo = data; struct graph_plot *plot = ginfo->plot_clicked; int pos; if (plot) pos = plot->pos + 1; else pos = ginfo->plots + 1; graph_plot_task(ginfo, ginfo->filter_task_selected, pos); ginfo->draw_height = PLOT_SPACE(ginfo->plots); gtk_widget_set_size_request(ginfo->draw, ginfo->draw_width, ginfo->draw_height); update_label_window(ginfo); } static void remove_plot_clicked (gpointer data) { struct graph_info *ginfo = data; struct graph_plot *plot = ginfo->plot_clicked; if (!plot) return; trace_graph_plot_remove(ginfo, plot); ginfo->draw_height = PLOT_SPACE(ginfo->plots); gtk_widget_set_size_request(ginfo->draw, ginfo->draw_width, ginfo->draw_height); update_label_window(ginfo); } static struct graph_plot *find_plot_by_y(struct graph_info *ginfo, gint y) { gint i; for (i = 0; i < ginfo->plots; i++) { if (y >= (PLOT_TOP(i) - PLOT_GIVE) && y <= (PLOT_BOTTOM(i) + PLOT_GIVE)) { return ginfo->plot_array[i]; } } return NULL; } static gboolean do_pop_up(GtkWidget *widget, GdkEventButton *event, gpointer data) { struct graph_info *ginfo = data; static GtkWidget *menu; static GtkWidget *menu_filter_enable; static GtkWidget *menu_filter_add_task; static GtkWidget *menu_filter_hide_task; static GtkWidget *menu_filter_clear_tasks; static GtkWidget *menu_plot_task; static GtkWidget *menu_remove_plot; struct pevent_record *record = NULL; struct graph_plot *plot; const char *comm; guint64 time; gchar *text; gint pid; gint len; gint x, y; x = event->x; y = event->y; if (!menu) { menu = gtk_menu_new(); menu_filter_enable = gtk_menu_item_new_with_label("Enable Filter"); gtk_widget_show(menu_filter_enable); gtk_menu_shell_append(GTK_MENU_SHELL (menu), menu_filter_enable); g_signal_connect_swapped (G_OBJECT (menu_filter_enable), "activate", G_CALLBACK (filter_enable_clicked), data); menu_filter_add_task = gtk_menu_item_new_with_label("Add Task"); gtk_widget_show(menu_filter_add_task); gtk_menu_shell_append(GTK_MENU_SHELL (menu), menu_filter_add_task); g_signal_connect_swapped (G_OBJECT (menu_filter_add_task), "activate", G_CALLBACK (filter_add_task_clicked), data); menu_filter_hide_task = gtk_menu_item_new_with_label("Hide Task"); gtk_widget_show(menu_filter_hide_task); gtk_menu_shell_append(GTK_MENU_SHELL (menu), menu_filter_hide_task); g_signal_connect_swapped (G_OBJECT (menu_filter_hide_task), "activate", G_CALLBACK (filter_hide_task_clicked), data); menu_filter_clear_tasks = gtk_menu_item_new_with_label("Clear Task Filter"); gtk_widget_show(menu_filter_clear_tasks); gtk_menu_shell_append(GTK_MENU_SHELL (menu), menu_filter_clear_tasks); g_signal_connect_swapped (G_OBJECT (menu_filter_clear_tasks), "activate", G_CALLBACK (filter_clear_tasks_clicked), data); menu_plot_task = gtk_menu_item_new_with_label("Plot task"); gtk_menu_shell_append(GTK_MENU_SHELL (menu), menu_plot_task); g_signal_connect_swapped (G_OBJECT (menu_plot_task), "activate", G_CALLBACK (plot_task_clicked), data); menu_remove_plot = gtk_menu_item_new_with_label("Remove Plot"); gtk_menu_shell_append(GTK_MENU_SHELL (menu), menu_remove_plot); gtk_widget_show(menu_remove_plot); g_signal_connect_swapped (G_OBJECT (menu_remove_plot), "activate", G_CALLBACK (remove_plot_clicked), data); } if (ginfo->filter_enabled) gtk_menu_item_set_label(GTK_MENU_ITEM(menu_filter_enable), "Disable Filter"); else gtk_menu_item_set_label(GTK_MENU_ITEM(menu_filter_enable), "Enable Filter"); if (ginfo->filter_available) gtk_widget_set_sensitive(menu_filter_enable, TRUE); else gtk_widget_set_sensitive(menu_filter_enable, FALSE); if (filter_task_count(ginfo->task_filter) || filter_task_count(ginfo->hide_tasks)) gtk_widget_set_sensitive(menu_filter_clear_tasks, TRUE); else gtk_widget_set_sensitive(menu_filter_clear_tasks, FALSE); time = convert_x_to_time(ginfo, x); plot = find_plot_by_y(ginfo, y); ginfo->plot_clicked = plot; if (plot) { record = trace_graph_plot_find_record(ginfo, plot, time); gtk_widget_set_sensitive(menu_remove_plot, TRUE); } else gtk_widget_set_sensitive(menu_remove_plot, FALSE); if (record) { if (!trace_graph_check_sched_switch(ginfo, record, &pid, &comm)) { pid = pevent_data_pid(ginfo->pevent, record); comm = pevent_data_comm_from_pid(ginfo->pevent, pid); } len = strlen(comm) + 50; text = g_malloc(len); g_assert(text); if (trace_graph_filter_task_find_pid(ginfo, pid)) snprintf(text, len, "Remove %s-%d from filter", comm, pid); else snprintf(text, len, "Add %s-%d to filter", comm, pid); ginfo->filter_task_selected = pid; gtk_menu_item_set_label(GTK_MENU_ITEM(menu_filter_add_task), text); if (trace_graph_hide_task_find_pid(ginfo, pid)) snprintf(text, len, "Show %s-%d", comm, pid); else snprintf(text, len, "Hide %s-%d", comm, pid); gtk_menu_item_set_label(GTK_MENU_ITEM(menu_filter_hide_task), text); snprintf(text, len, "Plot %s-%d", comm, pid); gtk_menu_item_set_label(GTK_MENU_ITEM(menu_plot_task), text); g_free(text); gtk_widget_set_sensitive(menu_filter_add_task, TRUE); gtk_widget_set_sensitive(menu_filter_hide_task, TRUE); gtk_widget_show(menu_plot_task); free_record(record); } else { gtk_menu_item_set_label(GTK_MENU_ITEM(menu_filter_add_task), "Add task to filter"); gtk_widget_set_sensitive(menu_filter_add_task, FALSE); gtk_menu_item_set_label(GTK_MENU_ITEM(menu_filter_hide_task), "Hide task"); gtk_widget_set_sensitive(menu_filter_hide_task, FALSE); gtk_widget_hide(menu_plot_task); } gtk_menu_popup(GTK_MENU(menu), NULL, NULL, NULL, NULL, 3, gtk_get_current_event_time()); return TRUE; } static void draw_info_box(struct graph_info *ginfo, const gchar *buffer, gint x, gint y); static void stop_zoom_tip(struct graph_info *ginfo) { clear_info_box(ginfo); } static void show_zoom_tip(struct graph_info *ginfo, gint x, gint y) { clear_info_box(ginfo); draw_info_box(ginfo, "Click and hold left mouse and drag right to zoom in\n" "Click and hold left mouse and drag left to zoom out", x, y); } static void button_press(struct graph_info *ginfo, gint x, gint y, guint state) { ginfo->press_x = x; ginfo->last_x = 0; draw_line(ginfo->draw, x, ginfo); ginfo->line_active = TRUE; ginfo->line_time = convert_x_to_time(ginfo, x); if (state & GDK_SHIFT_MASK) { ginfo->show_markb = FALSE; clear_line(ginfo, convert_time_to_x(ginfo, ginfo->markb_time)); /* We only update A if it hasn't been made yet */ if (!ginfo->marka_time) { ginfo->show_marka = FALSE; clear_line(ginfo, convert_time_to_x(ginfo, ginfo->marka_time)); update_marka(ginfo, x); } } else { ginfo->zoom = TRUE; show_zoom_tip(ginfo, x, y); } return; } static gboolean button_press_event(GtkWidget *widget, GdkEventButton *event, gpointer data) { struct graph_info *ginfo = data; if (!ginfo->handle) return FALSE; if (event->button == 3) return do_pop_up(widget, event, data); if (event->button != 1) return TRUE; /* check for double click */ if (event->type == GDK_2BUTTON_PRESS) { stop_zoom_tip(ginfo); if (ginfo->line_active) { ginfo->line_active = FALSE; clear_line(ginfo, ginfo->last_x); clear_line(ginfo, ginfo->press_x); } if (ginfo->cursor >= ginfo->view_start_time && ginfo->cursor <= ginfo->view_end_time) { ginfo->last_x = convert_time_to_x(ginfo, ginfo->cursor); ginfo->cursor = 0; clear_line(ginfo, ginfo->last_x); } ginfo->cursor = convert_x_to_time(ginfo, event->x); draw_cursor(ginfo); if (ginfo->callbacks && ginfo->callbacks->select) ginfo->callbacks->select(ginfo, ginfo->cursor); return TRUE; } button_press(ginfo, event->x, event->y, event->state); return TRUE; } static void draw_latency(struct graph_info *ginfo, gint x, gint y); static void draw_plot_info(struct graph_info *ginfo, struct graph_plot *plot, gint x, gint y); static void motion_plot(struct graph_info *ginfo, gint x, gint y) { struct graph_plot *plot; if (ginfo->zoom) stop_zoom_tip(ginfo); if (!ginfo->curr_pixmap) return; if (ginfo->pointer_time) update_pointer(ginfo, x); if (ginfo->line_active) { if (ginfo->last_x) clear_line(ginfo, ginfo->last_x); ginfo->last_x = x; draw_line(ginfo->draw, ginfo->press_x, ginfo); draw_line(ginfo->draw, x, ginfo); if (!ginfo->zoom) draw_latency(ginfo, x, y); return; } plot = find_plot_by_y(ginfo, y); if (plot) draw_plot_info(ginfo, plot, x, y); } static gboolean info_button_press_event(GtkWidget *widget, GdkEventButton *event, gpointer data) { struct graph_info *ginfo = data; if (!ginfo->handle) return FALSE; if (event->button != 1) return FALSE; /* check for double click */ if (event->type == GDK_2BUTTON_PRESS) return FALSE; button_press(ginfo, gtk_adjustment_get_value(ginfo->hadj), event->y, event->state); return FALSE; } static gboolean info_motion_notify_event(GtkWidget *widget, GdkEventMotion *event, gpointer data) { struct graph_info *ginfo = data; GdkModifierType state; gint x, y; if (!ginfo->handle) return FALSE; if (!ginfo->line_active) return FALSE; if (!ginfo->curr_pixmap) return FALSE; clear_info_box(ginfo); if (event->is_hint) gdk_window_get_pointer(event->window, &x, &y, &state); else { x = event->x; y = event->y; } /* Position x relative to the location in the drawing area */ x -= ginfo->scrollwin->allocation.x - ginfo->info_scrollwin->allocation.x; if (x < 0) return FALSE; x += gtk_adjustment_get_value(ginfo->hadj); motion_plot(ginfo, x, y); return FALSE; } static void button_release(struct graph_info *ginfo, gint x); static gboolean info_button_release_event(GtkWidget *widget, GdkEventMotion *event, gpointer data) { struct graph_info *ginfo = data; gint x; if (!ginfo->handle) return FALSE; x = event->x - ginfo->scrollwin->allocation.x - ginfo->info_scrollwin->allocation.x; button_release(ginfo, x); return FALSE; } #define PLOT_BOARDER 5 int trace_graph_check_sched_wakeup(struct graph_info *ginfo, struct pevent_record *record, gint *pid) { struct event_format *event; unsigned long long val; gboolean found; gint id; if (ginfo->event_wakeup_id < 0) { found = FALSE; event = pevent_find_event_by_name(ginfo->pevent, NULL, "sched_wakeup"); if (event) { found = TRUE; ginfo->event_wakeup_id = event->id; ginfo->wakeup_pid_field = pevent_find_field(event, "pid"); ginfo->wakeup_success_field = pevent_find_field(event, "success"); } event = pevent_find_event_by_name(ginfo->pevent, NULL, "sched_wakeup_new"); if (event) { found = TRUE; ginfo->event_wakeup_new_id = event->id; ginfo->wakeup_new_pid_field = pevent_find_field(event, "pid"); ginfo->wakeup_new_success_field = pevent_find_field(event, "success"); } if (!found) return 0; } id = pevent_data_type(ginfo->pevent, record); if (id == ginfo->event_wakeup_id) { /* We only want those that actually woke up the task */ if (ginfo->wakeup_success_field) { pevent_read_number_field(ginfo->wakeup_success_field, record->data, &val); if (!val) return 0; } pevent_read_number_field(ginfo->wakeup_pid_field, record->data, &val); if (pid) *pid = val; return 1; } if (id == ginfo->event_wakeup_new_id) { /* We only want those that actually woke up the task */ if (ginfo->wakeup_new_success_field) { pevent_read_number_field(ginfo->wakeup_new_success_field, record->data, &val); if (!val) return 0; } pevent_read_number_field(ginfo->wakeup_new_pid_field, record->data, &val); if (pid) *pid = val; return 1; } return 0; } int trace_graph_check_sched_switch(struct graph_info *ginfo, struct pevent_record *record, gint *pid, const char **comm) { unsigned long long val; struct event_format *event; gint this_pid; gint id; int ret = 1; if (ginfo->read_comms) { /* record all pids, for task plots */ this_pid = pevent_data_pid(ginfo->pevent, record); add_task_hash(ginfo, this_pid); } if (ginfo->event_sched_switch_id < 0) { event = pevent_find_event_by_name(ginfo->pevent, NULL, "sched_switch"); if (!event) return 0; ginfo->event_sched_switch_id = event->id; ginfo->event_prev_state = pevent_find_field(event, "prev_state"); ginfo->event_pid_field = pevent_find_field(event, "next_pid"); ginfo->event_comm_field = pevent_find_field(event, "next_comm"); event = pevent_find_event_by_name(ginfo->pevent, "ftrace", "context_switch"); if (event) { ginfo->ftrace_sched_switch_id = event->id; ginfo->ftrace_pid_field = pevent_find_field(event, "next_pid"); ginfo->ftrace_comm_field = pevent_find_field(event, "next_comm"); } } id = pevent_data_type(ginfo->pevent, record); if (id == ginfo->event_sched_switch_id) { pevent_read_number_field(ginfo->event_pid_field, record->data, &val); if (comm) *comm = record->data + ginfo->event_comm_field->offset; if (pid) *pid = val; goto out; } if (id == ginfo->ftrace_sched_switch_id) { pevent_read_number_field(ginfo->ftrace_pid_field, record->data, &val); if (comm && ginfo->ftrace_comm_field) *comm = record->data + ginfo->ftrace_comm_field->offset; else comm = NULL; if (pid) *pid = val; goto out; } ret = 0; out: if (ret && comm && ginfo->read_comms) { /* * First time through, register any missing * comm / pid mappings. */ if (!pevent_pid_is_registered(ginfo->pevent, *pid)) pevent_register_comm(ginfo->pevent, *comm, *pid); } return ret; } static void draw_info_box(struct graph_info *ginfo, const gchar *buffer, gint x, gint y) { PangoLayout *layout; GtkAdjustment *vadj; gint width, height; GdkPixmap *pix; static GdkGC *pix_bg; gint view_width; gint view_start; if (!pix_bg) { GdkColor color; pix_bg = gdk_gc_new(ginfo->draw->window); color.red = (0xff) *(65535/255); color.green = (0xfa) *(65535/255); color.blue = (0xcd) *(65535/255); gdk_color_alloc(gtk_widget_get_colormap(ginfo->draw), &color); gdk_gc_set_foreground(pix_bg, &color); } layout = gtk_widget_create_pango_layout(ginfo->draw, buffer); pango_layout_get_pixel_size(layout, &width, &height); width += PLOT_BOARDER * 2; height += PLOT_BOARDER * 2; view_start = gtk_adjustment_get_value(ginfo->hadj); view_width = gtk_adjustment_get_page_size(ginfo->hadj); if (x > view_start + width) x -= width; vadj = gtk_scrolled_window_get_vadjustment(GTK_SCROLLED_WINDOW(ginfo->scrollwin)); view_start = gtk_adjustment_get_value(vadj); if (y > view_start + height) y -= height; ginfo->plot_data_x = x; ginfo->plot_data_y = y; ginfo->plot_data_w = width; ginfo->plot_data_h = height; pix = gdk_pixmap_new(ginfo->draw->window, width, height, -1); gdk_draw_rectangle(pix, pix_bg, TRUE, 0, 0, width, height); gdk_draw_rectangle(pix, ginfo->draw->style->black_gc, FALSE, 0, 0, width-1, height-1); gdk_draw_layout(pix, ginfo->draw->style->black_gc, PLOT_BOARDER, PLOT_BOARDER, layout); gdk_draw_drawable(ginfo->draw->window, ginfo->draw->style->fg_gc[GTK_WIDGET_STATE(ginfo->draw)], pix, 0, 0, x, y, width, height); g_object_unref(layout); g_object_unref(pix); } static void draw_plot_info(struct graph_info *ginfo, struct graph_plot *plot, gint x, gint y) { struct pevent *pevent; guint64 time; unsigned long sec, usec; struct trace_seq s; time = convert_x_to_time(ginfo, x); convert_nano(time, &sec, &usec); pevent = ginfo->pevent; trace_seq_init(&s); dprintf(3, "start=%llu end=%llu time=%llu\n", (u64)ginfo->start_time, (u64)ginfo->end_time, (u64)time); if (!trace_graph_plot_display_info(ginfo, plot, &s, time)) { /* Just display the current time */ trace_seq_destroy(&s); trace_seq_init(&s); trace_seq_printf(&s, "%lu.%06lu", sec, usec); } trace_seq_putc(&s, 0); draw_info_box(ginfo, s.buffer, x, y); trace_seq_destroy(&s); } static void draw_latency(struct graph_info *ginfo, gint x, gint y) { struct pevent *pevent; unsigned long sec, usec; struct trace_seq s; gboolean neg; gint64 time; update_markb(ginfo, x); time = convert_x_to_time(ginfo, x); time -= ginfo->line_time; if (time < 0) { neg = TRUE; time *= -1; } else neg = FALSE; convert_nano(time, &sec, &usec); pevent = ginfo->pevent; trace_seq_init(&s); trace_seq_printf(&s, "Diff: %s%ld.%06lu secs", neg ? "-":"", sec, usec); draw_info_box(ginfo, s.buffer, x, y); trace_seq_destroy(&s); } static gboolean motion_notify_event(GtkWidget *widget, GdkEventMotion *event, gpointer data) { struct graph_info *ginfo = data; GdkModifierType state; gint x, y; if (!ginfo->handle) return FALSE; clear_info_box(ginfo); if (event->is_hint) gdk_window_get_pointer(event->window, &x, &y, &state); else { x = event->x; y = event->y; state = event->state; } motion_plot(ginfo, x, y); return TRUE; } static int update_graph(struct graph_info *ginfo, gdouble percent) { gint full_width = ginfo->full_width * percent; gdouble resolution = (gdouble)full_width / (gdouble)(ginfo->end_time - ginfo->start_time); /* Check if we are too big */ if (!resolution || full_width <= 0) return -1; ginfo->full_width = full_width; ginfo->resolution = resolution; ginfo->start_x = (ginfo->view_start_time - ginfo->start_time) * ginfo->resolution; dprintf(1, "new resolution = %f\n", resolution); return 0; } static void update_graph_to_start_x(struct graph_info *ginfo) { gint width = ginfo->draw_width;; if (!width) { ginfo->view_start_time = ginfo->start_time; ginfo->view_end_time = ginfo->end_time; return; } ginfo->view_start_time = (gdouble)ginfo->start_x / ginfo->resolution + ginfo->start_time; ginfo->view_end_time = (gdouble)width / ginfo->resolution + ginfo->view_start_time; g_assert (ginfo->view_start_time < ginfo->end_time); } static void reset_graph(struct graph_info *ginfo, gdouble view_width) { ginfo->full_width = view_width; ginfo->draw_width = 0; ginfo->view_start_time = ginfo->start_time; ginfo->view_end_time = ginfo->end_time; ginfo->start_x = 0; } static void zoom_in_window(struct graph_info *ginfo, gint start, gint end) { guint64 start_time; gdouble view_width; gdouble new_width; gdouble select_width; gdouble curr_width; gdouble mid; gdouble percent; gint old_width = ginfo->draw_width; g_assert(start < end); g_assert(ginfo->hadj); start_time = ginfo->start_time + (ginfo->start_x + start) / ginfo->resolution; view_width = gtk_adjustment_get_page_size(ginfo->hadj); select_width = end - start; percent = view_width / select_width; dprintf(1, "view width=%f select width=%f percent=%f\n", view_width, select_width, percent); if (update_graph(ginfo, percent) < 0) return; curr_width = ginfo->draw->allocation.width; new_width = curr_width * percent; ginfo->draw_width = new_width; dprintf(1, "zoom in draw_width=%d full_width=%d\n", ginfo->draw_width, ginfo->full_width); if (ginfo->draw_width > MAX_WIDTH) { gint new_start; gint new_end; /* * The drawing is now greater than our max. We must * limit the maximum size of the drawing area or * we risk running out of X resources. * * We will now shorten the trace to that of what will * fit in this zoomed area. */ ginfo->draw_width = MAX_WIDTH; mid = start + (end - start) / 2; mid *= percent; mid += ginfo->start_x; /* * mid now points to the center of the viewable area * if the draw area was of new_width. * * new_start new_end * +------------------------------------------------+ * | | | | * | | | | * +------------------------------------------------+ * ^ ^ * | mid * old view start * */ new_start = mid - MAX_WIDTH / 2; new_end = new_start + MAX_WIDTH; if (new_start < 0) { mid += new_start; new_start = 0; } else if (new_end > ginfo->full_width) { new_start -= new_end - ginfo->full_width; mid += new_end - ginfo->full_width; new_end = ginfo->full_width; g_assert(new_start >= 0); } ginfo->start_x = new_start; dprintf(1, "new start/end =%d/%d full:%d start_time:", new_start, new_end, ginfo->full_width); print_time(ginfo->view_start_time); dprintf(1, "\n"); /* Adjust start to be the location for the hadj */ start = (mid - new_start) - view_width / 2; } else start *= percent; update_graph_to_start_x(ginfo); ginfo->hadj_value = start; ginfo->hadj_value = convert_time_to_x(ginfo, start_time); if (ginfo->hadj_value > (ginfo->draw_width - view_width)) ginfo->hadj_value = ginfo->draw_width - view_width; dprintf(1, "new width=%d\n", ginfo->draw_width); /* make sure the width is sent */ if (ginfo->draw_width == old_width) redraw_graph(ginfo); else gtk_widget_set_size_request(ginfo->draw, ginfo->draw_width, ginfo->draw_height); dprintf(1, "set val %f\n", ginfo->hadj_value); dprintf(1, "*** ended with with "); print_time(convert_x_to_time(ginfo, ginfo->hadj_value)); dprintf(1, "\n"); } static gboolean value_changed(GtkWidget *widget, gpointer data) { GtkAdjustment *adj = GTK_ADJUSTMENT(widget); dprintf(2, "value = %f\n", gtk_adjustment_get_value(adj)); return TRUE; } static void zoom_out_window(struct graph_info *ginfo, gint start, gint end) { gdouble view_width; gdouble divider; gdouble curr_width; gdouble new_width; gdouble mid; gdouble start_x; unsigned long long time; gint old_width = ginfo->draw_width; g_assert(start > end); g_assert(ginfo->hadj); view_width = gtk_adjustment_get_page_size(ginfo->hadj); start_x = gtk_adjustment_get_value(ginfo->hadj); mid = start_x + view_width / 2; time = convert_x_to_time(ginfo, mid); divider = start - end; curr_width = ginfo->draw->allocation.width; new_width = curr_width / divider; if (update_graph(ginfo, 1 / divider) < 0) return; dprintf(1, "width=%d\n", ginfo->draw->allocation.width); ginfo->draw_width = new_width; dprintf(1, "draw_width=%d full_width=%d\n", ginfo->draw_width, ginfo->full_width); if (ginfo->full_width < view_width) { reset_graph(ginfo, view_width); time = ginfo->view_start_time; } else if (ginfo->draw_width < ginfo->full_width) { if (ginfo->full_width < MAX_WIDTH) { ginfo->draw_width = ginfo->full_width; ginfo->view_start_time = ginfo->start_time; ginfo->view_end_time = ginfo->end_time; ginfo->start_x = 0; } else { ginfo->draw_width = MAX_WIDTH; mid /= divider; mid += ginfo->start_x; /* mid now is the current mid with full_width */ ginfo->start_x = mid - MAX_WIDTH / 2; if (ginfo->start_x < 0) ginfo->start_x = 0; update_graph_to_start_x(ginfo); } } dprintf(1, "new width=%d\n", ginfo->draw_width); /* make sure the width is sent */ if (ginfo->draw_width == old_width) redraw_graph(ginfo); else gtk_widget_set_size_request(ginfo->draw, ginfo->draw_width, ginfo->draw_height); mid = convert_time_to_x(ginfo, time); start_x = mid - view_width / 2; if (start_x < 0) start_x = 0; ginfo->hadj_value = start_x; } static void activate_zoom(struct graph_info *ginfo, gint x) { if (!ginfo->zoom) return; ginfo->zoom = FALSE; if (x > ginfo->press_x) { /* make a decent zoom */ if (x - ginfo->press_x < 10) return; zoom_in_window(ginfo, ginfo->press_x, x); } else if (x < ginfo->press_x) zoom_out_window(ginfo, ginfo->press_x, x); } static void button_release(struct graph_info *ginfo, gint x) { gint old_x; if (!ginfo->line_active) return; if (!ginfo->zoom) { ginfo->show_marka = TRUE; ginfo->show_markb = TRUE; update_markb(ginfo, x); } else stop_zoom_tip(ginfo); clear_line(ginfo, ginfo->last_x); clear_line(ginfo, ginfo->press_x); ginfo->line_active = FALSE; clear_info_box(ginfo); /* If button is released at same location, set A (without shift) */ if (ginfo->zoom && x >= ginfo->press_x-1 && x <= ginfo->press_x+1) { old_x = convert_time_to_x(ginfo, ginfo->marka_time); ginfo->show_marka = TRUE; update_marka(ginfo, x); clear_line(ginfo, old_x); if (ginfo->markb_time) update_label_time(ginfo->delta_label, ginfo->markb_time - ginfo->marka_time); } activate_zoom(ginfo, x); } static gboolean button_release_event(GtkWidget *widget, GdkEventMotion *event, gpointer data) { struct graph_info *ginfo = data; if (!ginfo->handle) return FALSE; button_release(ginfo, event->x); return TRUE; } static gboolean leave_notify_event(GtkWidget *widget, GdkEventCrossing *event, gpointer data) { struct graph_info *ginfo = data; if (!ginfo->handle) return FALSE; clear_info_box(ginfo); return FALSE; } static void set_color(GtkWidget *widget, GdkGC *gc, gint c) { GdkColor color; color.red = (c & 0xff)*(65535/255); color.blue = ((c >> 8) & 0xff)*(65535/255); color.green = ((c >> 16) & 0xff)*(65535/255); gdk_color_alloc(gtk_widget_get_colormap(widget), &color); gdk_gc_set_foreground(gc, &color); } #define LABEL_SPACE 3 static gint draw_event_label(struct graph_info *ginfo, gint i, gint p1, gint p2, gint p3, gint width_16, PangoFontDescription *font) { struct graph_plot *plot = ginfo->plot_array[i]; PangoLayout *layout; struct trace_seq s; gint text_width; gint text_height; gint start, end; gint x, y; gint ret; /* * We are testing if we can print the label at p2. * p1 has the start of the area that we can print. * p3 is the location of the next label. * We will not print any label unless we have enough * room to print a minimum of 16 characters. */ if (p3 - p1 < width_16 || p3 - p2 < width_16 / 2) return p2; /* Now get p2's drawing size */ trace_seq_init(&s); /* * Display the event after p2 - 1. We use "-1" because we need to * find the event at this pixel, and due to rounding, p2 time can * be after the time of the event. Since tracecmd finds the next event * after the time, we use this to find our next event. */ ret = trace_graph_plot_display_last_event(ginfo, plot, &s, convert_x_to_time(ginfo, p2-1)); if (!ret) { trace_seq_destroy(&s); return p2; } layout = gtk_widget_create_pango_layout(ginfo->draw, s.buffer); pango_layout_set_font_description(layout, font); pango_layout_get_pixel_size(layout, &text_width, &text_height); trace_seq_destroy(&s); /* Lets see if we can print this info */ if (p2 < text_width) start = 1; else start = p2 - text_width / 2; end = start + text_width; if (start < p1 || end > p3) { g_object_unref(layout); return p2; } /* Display the info */ x = start; y = (PLOT_TOP(i) - text_height + 5); gdk_draw_layout(ginfo->curr_pixmap, ginfo->draw->style->black_gc, x, y, layout); gdk_draw_line(ginfo->curr_pixmap, ginfo->draw->style->black_gc, p2, PLOT_TOP(i) - 5, p2, PLOT_TOP(i) - 1); g_object_unref(layout); /* * Set the next p1 to start after the end of what was displayed * plus a little padding. */ return end + LABEL_SPACE; } static gint draw_plot_line(struct graph_info *ginfo, int i, unsigned long long time, GdkGC *gc) { gint x; x = convert_time_to_x(ginfo, time); gdk_draw_line(ginfo->curr_pixmap, gc, x, PLOT_TOP(i), x, PLOT_BOTTOM(i)); return x; } static void draw_plot_box(struct graph_info *ginfo, int i, unsigned long long start, unsigned long long end, gboolean fill, GdkGC *gc) { gint x1; gint x2; x1 = convert_time_to_x(ginfo, start); x2 = convert_time_to_x(ginfo, end); gdk_draw_rectangle(ginfo->curr_pixmap, gc, fill, x1, PLOT_BOX_TOP(i), x2 - x1, PLOT_BOX_SIZE); } static void draw_plot(struct graph_info *ginfo, struct graph_plot *plot, struct pevent_record *record) { static PangoFontDescription *font; PangoLayout *layout; static gint width_16; struct plot_info info; gint x; /* Calculate the size of 16 characters */ if (!width_16) { gchar buf[17]; gint text_height; memset(buf, 'a', 16); buf[16] = 0; font = pango_font_description_from_string("Sans 8"); layout = gtk_widget_create_pango_layout(ginfo->draw, buf); pango_layout_set_font_description(layout, font); pango_layout_get_pixel_size(layout, &width_16, &text_height); g_object_unref(layout); } trace_graph_plot_event(ginfo, plot, record, &info); if (info.box) { if (info.bcolor != plot->last_color) { plot->last_color = info.bcolor; set_color(ginfo->draw, plot->gc, plot->last_color); } draw_plot_box(ginfo, plot->pos, info.bstart, info.bend, info.bfill, plot->gc); } if (info.line) { if (info.lcolor != plot->last_color) { plot->last_color = info.lcolor; set_color(ginfo->draw, plot->gc, plot->last_color); } x = draw_plot_line(ginfo, plot->pos, info.ltime, plot->gc); /* Figure out if we can show the text for the previous record */ plot->p3 = x; /* Make sure p2 will be non-zero the next iteration */ if (!plot->p3) plot->p3 = 1; /* first record, continue */ if (plot->p2) plot->p2 = draw_event_label(ginfo, plot->pos, plot->p1, plot->p2, plot->p3, width_16, font); plot->p1 = plot->p2; plot->p2 = plot->p3; } if (!record && plot->p2) draw_event_label(ginfo, plot->pos, plot->p1, plot->p2, ginfo->draw_width, width_16, font); } static void draw_plots(struct graph_info *ginfo, gint new_width) { struct plot_list *list; struct graph_plot *plot; struct pevent_record *record; struct plot_hash *hash; gint pid; gint cpu; gint i; /* Initialize plots */ for (i = 0; i < ginfo->plots; i++) { plot = ginfo->plot_array[i]; if (!plot->gc) plot->gc = gdk_gc_new(ginfo->draw->window); plot->p1 = 0; plot->p2 = 0; plot->p3 = 0; plot->last_color = -1; gdk_draw_line(ginfo->curr_pixmap, ginfo->draw->style->black_gc, 0, PLOT_LINE(i), new_width, PLOT_LINE(i)); trace_graph_plot_start(ginfo, plot, ginfo->view_start_time); set_color(ginfo->draw, plot->gc, plot->last_color); } tracecmd_set_all_cpus_to_timestamp(ginfo->handle, ginfo->view_start_time); trace_set_cursor(GDK_WATCH); /* Shortcut if we don't have any task plots */ if (!ginfo->nr_task_hash && !ginfo->all_recs) { for (cpu = 0; cpu < ginfo->cpus; cpu++) { hash = trace_graph_plot_find_cpu(ginfo, cpu); if (!hash) continue; while ((record = tracecmd_read_data(ginfo->handle, cpu))) { if (record->ts < ginfo->view_start_time) { free_record(record); continue; } if (record->ts > ginfo->view_end_time) { free_record(record); break; } for (list = hash->plots; list; list = list->next) draw_plot(ginfo, list->plot, record); free_record(record); } } goto out; } while ((record = tracecmd_read_next_data(ginfo->handle, &cpu))) { if (record->ts < ginfo->view_start_time) { free_record(record); continue; } if (record->ts > ginfo->view_end_time) { free_record(record); break; } hash = trace_graph_plot_find_cpu(ginfo, cpu); if (hash) { for (list = hash->plots; list; list = list->next) draw_plot(ginfo, list->plot, record); } pid = pevent_data_pid(ginfo->pevent, record); hash = trace_graph_plot_find_task(ginfo, pid); if (hash) { for (list = hash->plots; list; list = list->next) draw_plot(ginfo, list->plot, record); } for (list = ginfo->all_recs; list; list = list->next) draw_plot(ginfo, list->plot, record); free_record(record); } out: for (i = 0; i < ginfo->plots; i++) { plot = ginfo->plot_array[i]; draw_plot(ginfo, plot, NULL); trace_graph_plot_end(ginfo, plot); if (plot->gc) gdk_gc_unref(plot->gc); plot->gc = NULL; } trace_put_cursor(); } static void draw_timeline(struct graph_info *ginfo, gint width) { PangoLayout *layout; struct trace_seq s; unsigned long sec, usec; unsigned long long time; gint mid; gint w, h, height; gint view_width; /* --- draw timeline text --- */ layout = gtk_widget_create_pango_layout(ginfo->draw, "Time Line"); pango_layout_get_pixel_size(layout, &w, &h); height = 10 + h; mid = width / 2; gdk_draw_layout(ginfo->curr_pixmap, ginfo->draw->style->black_gc, mid - w / 2, 5, layout); g_object_unref(layout); /* --- draw time line lines --- */ gdk_draw_line(ginfo->curr_pixmap, ginfo->draw->style->black_gc, 0, height, width, height); gdk_draw_line(ginfo->curr_pixmap, ginfo->draw->style->black_gc, 0, height, 0, height + 5); gdk_draw_line(ginfo->curr_pixmap, ginfo->draw->style->black_gc, width-1, height, width-1, height); gdk_draw_line(ginfo->curr_pixmap, ginfo->draw->style->black_gc, width-1, height, width-1, height + 5); /* --- draw starting time --- */ convert_nano(ginfo->view_start_time, &sec, &usec); trace_seq_init(&s); trace_seq_printf(&s, "%lu.%06lu", sec, usec); layout = gtk_widget_create_pango_layout(ginfo->draw, s.buffer); pango_layout_get_pixel_size(layout, &w, &h); gdk_draw_layout(ginfo->curr_pixmap, ginfo->draw->style->black_gc, 1, height+10, layout); g_object_unref(layout); trace_seq_destroy(&s); /* --- draw ending time --- */ convert_nano(ginfo->view_end_time, &sec, &usec); trace_seq_init(&s); trace_seq_printf(&s, "%lu.%06lu", sec, usec); layout = gtk_widget_create_pango_layout(ginfo->draw, s.buffer); pango_layout_get_pixel_size(layout, &w, &h); gdk_draw_layout(ginfo->curr_pixmap, ginfo->draw->style->black_gc, width - (w + 2), height+10, layout); g_object_unref(layout); trace_seq_destroy(&s); /* --- draw time at intervals --- */ view_width = gtk_adjustment_get_page_size(ginfo->hadj); for (mid = view_width / 2; mid < (width - view_width / 2 + 10); mid += view_width / 2) { time = convert_x_to_time(ginfo, mid); convert_nano(time, &sec, &usec); trace_seq_init(&s); trace_seq_printf(&s, "%lu.%06lu", sec, usec); gdk_draw_line(ginfo->curr_pixmap, ginfo->draw->style->black_gc, mid, height, mid, height + 5); layout = gtk_widget_create_pango_layout(ginfo->draw, s.buffer); pango_layout_get_pixel_size(layout, &w, &h); gdk_draw_layout(ginfo->curr_pixmap, ginfo->draw->style->black_gc, mid - (w / 2), height+10, layout); g_object_unref(layout); trace_seq_destroy(&s); } } static void draw_info(struct graph_info *ginfo, gint new_width) { if (!ginfo->handle) return; ginfo->resolution = (gdouble)new_width / (gdouble)(ginfo->view_end_time - ginfo->view_start_time); ginfo->full_width = (ginfo->end_time - ginfo->start_time) * ginfo->resolution; draw_timeline(ginfo, new_width); draw_plots(ginfo, new_width); ginfo->read_comms = FALSE; } void trace_graph_select_by_time(struct graph_info *ginfo, guint64 time) { GtkAdjustment *vadj; gint view_start; gint view_width; gint width; gint mid; gint start; gint end; int ret; gint i; guint64 old_start_time = ginfo->view_start_time; view_width = gtk_adjustment_get_page_size(ginfo->hadj); width = ginfo->draw_width ? : ginfo->full_width; mid = (time - ginfo->start_time) * ginfo->resolution; start = mid - width / 2; if (start < 0) start = 0; end = start + width; /* * Readjust the drawing to be centered on the selection. */ if (end > ginfo->full_width) { start -= end - ginfo->full_width; g_assert(start >= 0); end = ginfo->full_width; } ginfo->start_x = start; update_graph_to_start_x(ginfo); /* force redraw if we changed the time*/ if (old_start_time != ginfo->view_start_time) redraw_pixmap_backend(ginfo); /* Adjust start to be the location for the hadj */ mid = convert_time_to_x(ginfo, time); start = mid - view_width / 2; if (start < 0) start = 0; if (start > (width - view_width)) start = width - view_width; gtk_adjustment_set_value(ginfo->hadj, start); ginfo->last_x = convert_time_to_x(ginfo, ginfo->cursor); ginfo->cursor = 0; clear_line(ginfo, ginfo->last_x); ginfo->cursor = time; update_with_backend(ginfo, 0, 0, width, ginfo->draw_height); /* * If a record exists at this exact time value, we should * make sure that it is in view. */ for (i = 0; i < ginfo->plots; i++) { ret = trace_graph_plot_match_time(ginfo, ginfo->plot_array[i], time); if (ret) break; } if (i == ginfo->plots) return; /* Make sure PLOT is visible */ vadj = gtk_scrolled_window_get_vadjustment(GTK_SCROLLED_WINDOW(ginfo->scrollwin)); view_start = gtk_adjustment_get_value(vadj); view_width = gtk_adjustment_get_page_size(vadj); if (PLOT_TOP(i) > view_start && PLOT_BOTTOM(i) < view_start + view_width) return; if (PLOT_TOP(i) < view_start) gtk_adjustment_set_value(vadj, PLOT_TOP(i) - 5); if (PLOT_BOTTOM(i) > view_start + view_width) gtk_adjustment_set_value(vadj, (PLOT_BOTTOM(i) - view_width) + 10); } void trace_graph_event_filter_callback(gboolean accept, gboolean all_events, gchar **systems, gint *events, gpointer data) { struct graph_info *ginfo = data; if (!accept) return; if (all_events) { ginfo->all_events = TRUE; /* filter is no longer used */ pevent_filter_reset(ginfo->event_filter); redraw_graph(ginfo); return; } ginfo->all_events = FALSE; pevent_filter_clear_trivial(ginfo->event_filter, FILTER_TRIVIAL_BOTH); trace_filter_convert_char_to_filter(ginfo->event_filter, systems, events); redraw_graph(ginfo); } void trace_graph_adv_filter_callback(gboolean accept, const gchar *text, gint *event_ids, gpointer data) { struct graph_info *ginfo = data; struct event_filter *event_filter; char error_str[200]; int ret; int i; if (!accept) return; if (!has_text(text) && !event_ids) return; event_filter = ginfo->event_filter; if (event_ids) { for (i = 0; event_ids[i] >= 0; i++) pevent_filter_remove_event(event_filter, event_ids[i]); } if (has_text(text)) { ginfo->all_events = FALSE; pevent_filter_clear_trivial(event_filter, FILTER_TRIVIAL_BOTH); ret = pevent_filter_add_filter_str(event_filter, text); if (ret < 0) { pevent_strerror(event_filter->pevent, ret, error_str, sizeof(error_str)); warning("filter failed due to: %s", error_str); return; } } redraw_graph(ginfo); } void trace_graph_copy_filter(struct graph_info *ginfo, gboolean all_events, struct event_filter *event_filter) { if (all_events) { ginfo->all_events = TRUE; /* filter is no longer used */ pevent_filter_reset(ginfo->event_filter); redraw_graph(ginfo); return; } ginfo->all_events = FALSE; pevent_filter_copy(ginfo->event_filter, event_filter); redraw_graph(ginfo); } static void redraw_pixmap_backend(struct graph_info *ginfo) { GdkPixmap *old_pix; static gboolean init; old_pix = ginfo->curr_pixmap; /* initialize full width if needed */ if (!ginfo->full_width) ginfo->full_width = ginfo->draw->allocation.width; ginfo->curr_pixmap = gdk_pixmap_new(ginfo->draw->window, ginfo->draw->allocation.width, ginfo->draw->allocation.height, -1); gdk_draw_rectangle(ginfo->curr_pixmap, ginfo->draw->style->white_gc, TRUE, 0, 0, ginfo->draw->allocation.width, ginfo->draw->allocation.height); draw_info(ginfo, ginfo->draw->allocation.width); if (!init) { init = TRUE; green = gdk_gc_new(ginfo->draw->window); red = gdk_gc_new(ginfo->draw->window); set_color(ginfo->draw, green, (0xff<<16)); set_color(ginfo->draw, red, 0xff); } if (old_pix) g_object_unref(old_pix); if (ginfo->hadj_value) { // gtk_adjustment_set_lower(ginfo->hadj, -100.0); gtk_adjustment_set_value(ginfo->hadj, ginfo->hadj_value); } } static gboolean configure_event(GtkWidget *widget, GdkEventMotion *event, gpointer data) { struct graph_info *ginfo = data; gtk_widget_set_size_request(widget, ginfo->draw_width, ginfo->draw_height); redraw_pixmap_backend(ginfo); /* debug */ ginfo->hadj_value = gtk_adjustment_get_value(ginfo->hadj); dprintf(2, "get val %f\n", ginfo->hadj_value); ginfo->hadj_value = 0.0; return TRUE; } static gboolean destroy_event(GtkWidget *widget, gpointer data) { struct graph_info *ginfo = data; trace_graph_free_info(ginfo); filter_task_hash_free(ginfo->task_filter); filter_task_hash_free(ginfo->hide_tasks); return TRUE; } static void redraw_label_window(struct graph_info *ginfo, int x, int y, int w, int h) { gdk_draw_drawable(ginfo->info->window, ginfo->info->style->fg_gc[GTK_WIDGET_STATE(ginfo->info)], ginfo->info_pixmap, x, y, x, y, w, h); } static gboolean info_expose_event(GtkWidget *widget, GdkEventExpose *event, gpointer data) { struct graph_info *ginfo = data; redraw_label_window(ginfo, event->area.x, event->area.y, event->area.width, event->area.height); return FALSE; } static void info_draw_plot_label(struct graph_info *ginfo, gint i) { PangoLayout *layout; gint width, height; char *label; label = ginfo->plot_array[i]->label; layout = gtk_widget_create_pango_layout(ginfo->info, label); pango_layout_get_pixel_size(layout, &width, &height); width += 4; if (width > largest_plot_label) largest_plot_label = width; gdk_draw_rectangle(ginfo->info_pixmap, ginfo->info->style->white_gc, TRUE, PLOT_X, PLOT_LABEL(i)+4, width, height); gdk_draw_layout(ginfo->info_pixmap, ginfo->info->style->black_gc, PLOT_X+ 2, PLOT_LABEL(i) + 4, layout); g_object_unref(layout); } static void info_draw_plot_labels(struct graph_info *ginfo) { gint i; if (!ginfo->handle) return; largest_plot_label = 0; for (i = 0; i < ginfo->plots; i++) info_draw_plot_label(ginfo, i); } static void update_label_window(struct graph_info *ginfo) { if (ginfo->info_pixmap) g_object_unref(ginfo->info_pixmap); ginfo->info_pixmap = gdk_pixmap_new(ginfo->info->window, ginfo->info->allocation.width, ginfo->info->allocation.height, -1); gdk_draw_rectangle(ginfo->info_pixmap, ginfo->info->style->white_gc, TRUE, 0, 0, ginfo->info->allocation.width, ginfo->info->allocation.height); info_draw_plot_labels(ginfo); gtk_widget_set_size_request(ginfo->info, largest_plot_label + 10, ginfo->draw_height); redraw_label_window(ginfo, 0, 0, ginfo->info->allocation.width, ginfo->info->allocation.height); } static gboolean info_configure_event(GtkWidget *widget, GdkEventMotion *event, gpointer data) { struct graph_info *ginfo = data; update_label_window(ginfo); return TRUE; } static GtkWidget * create_graph_info(struct graph_info *ginfo) { GtkWidget *info; info = gtk_drawing_area_new(); gtk_signal_connect(GTK_OBJECT(info), "expose_event", (GtkSignalFunc) info_expose_event, ginfo); gtk_signal_connect(GTK_OBJECT(info), "configure_event", (GtkSignalFunc) info_configure_event, ginfo); gtk_signal_connect(GTK_OBJECT(info), "button_press_event", (GtkSignalFunc) info_button_press_event, ginfo); gtk_signal_connect(GTK_OBJECT(info), "motion_notify_event", (GtkSignalFunc) info_motion_notify_event, ginfo); gtk_signal_connect(GTK_OBJECT(info), "button_release_event", (GtkSignalFunc) info_button_release_event, ginfo); gtk_widget_set_events(info, GDK_EXPOSURE_MASK | GDK_BUTTON_PRESS_MASK | GDK_BUTTON_RELEASE_MASK | GDK_POINTER_MOTION_MASK | GDK_POINTER_MOTION_HINT_MASK); return info; } void trace_graph_free_info(struct graph_info *ginfo) { if (ginfo->handle) { pevent_filter_free(ginfo->event_filter); trace_graph_plot_free(ginfo); tracecmd_close(ginfo->handle); free_task_hash(ginfo); ginfo->cursor = 0; } ginfo->handle = NULL; } static int load_handle(struct graph_info *ginfo, struct tracecmd_input *handle) { struct pevent_record *record; unsigned long sec, usec; gint cpu; if (!handle) return -1; trace_graph_free_info(ginfo); trace_graph_plot_init(ginfo); ginfo->handle = handle; tracecmd_ref(handle); init_event_cache(ginfo); ginfo->pevent = tracecmd_get_pevent(handle); ginfo->cpus = tracecmd_cpus(handle); ginfo->all_events = TRUE; ginfo->event_filter = pevent_filter_alloc(ginfo->pevent); ginfo->start_time = -1ULL; ginfo->end_time = 0; graph_plot_init_cpus(ginfo, ginfo->cpus); ginfo->draw_height = PLOT_SPACE(ginfo->plots); for (cpu = 0; cpu < ginfo->cpus; cpu++) { record = tracecmd_read_cpu_first(handle, cpu); if (!record) continue; if (record->ts < ginfo->start_time) ginfo->start_time = record->ts; free_record(record); record = tracecmd_read_cpu_last(handle, cpu); if (!record) continue; if (record->ts > ginfo->end_time) ginfo->end_time = record->ts; free_record(record); } convert_nano(ginfo->start_time, &sec, &usec); dprintf(1, "start=%lu.%06lu ", sec, usec); convert_nano(ginfo->end_time, &sec, &usec); dprintf(1, "end=%lu.%06lu\n", sec, usec); ginfo->view_start_time = ginfo->start_time; ginfo->view_end_time = ginfo->end_time; if (!ginfo->draw) return 0; update_cursor(ginfo); update_pointer(ginfo, 0); update_marka(ginfo, 0); update_markb(ginfo, 0); return 0; } void trace_graph_refresh(struct graph_info *ginfo) { ginfo->draw_height = PLOT_SPACE(ginfo->plots); gtk_widget_set_size_request(ginfo->draw, ginfo->draw_width, ginfo->draw_height); update_label_window(ginfo); redraw_graph(ginfo); } int trace_graph_load_handle(struct graph_info *ginfo, struct tracecmd_input *handle) { if (load_handle(ginfo, handle) < 0) return -1; update_label_window(ginfo); redraw_graph(ginfo); return 0; } static int load_event_filter(struct graph_info *ginfo, struct tracecmd_xml_handle *handle, struct tracecmd_xml_system_node *node) { struct tracecmd_xml_system_node *child; struct event_filter *event_filter; const char *name; const char *value; event_filter = ginfo->event_filter; child = tracecmd_xml_node_child(node); name = tracecmd_xml_node_type(child); if (strcmp(name, "FilterType") != 0) return -1; value = tracecmd_xml_node_value(handle, child); /* Do nothing with all events enabled */ if (strcmp(value, "all events") == 0) return 0; node = tracecmd_xml_node_next(child); if (!node) return -1; pevent_filter_clear_trivial(event_filter, FILTER_TRIVIAL_BOTH); ginfo->all_events = FALSE; trace_filter_load_events(event_filter, handle, node); return 0; } int trace_graph_load_filters(struct graph_info *ginfo, struct tracecmd_xml_handle *handle) { struct tracecmd_xml_system *system; struct tracecmd_xml_system_node *syschild; const char *name; if (filter_task_count(ginfo->task_filter) || filter_task_count(ginfo->hide_tasks)) ginfo->filter_available = 1; else ginfo->filter_available = 0; system = tracecmd_xml_find_system(handle, "TraceGraph"); if (!system) return -1; syschild = tracecmd_xml_system_node(system); if (!syschild) goto out_free_sys; do { name = tracecmd_xml_node_type(syschild); if (strcmp(name, "EventFilter") == 0) load_event_filter(ginfo, handle, syschild); syschild = tracecmd_xml_node_next(syschild); } while (syschild); if (filter_task_count(ginfo->task_filter) || filter_task_count(ginfo->hide_tasks)) ginfo->filter_available = 1; else ginfo->filter_available = 0; tracecmd_xml_free_system(system); trace_graph_refresh(ginfo); return 0; out_free_sys: tracecmd_xml_free_system(system); if (ginfo->filter_enabled) trace_graph_refresh(ginfo); return -1; } int trace_graph_save_filters(struct graph_info *ginfo, struct tracecmd_xml_handle *handle) { struct event_filter *event_filter; tracecmd_xml_start_system(handle, "TraceGraph"); event_filter = ginfo->event_filter; tracecmd_xml_start_sub_system(handle, "EventFilter"); if (ginfo->all_events || !event_filter) tracecmd_xml_write_element(handle, "FilterType", "all events"); else { tracecmd_xml_write_element(handle, "FilterType", "filter"); trace_filter_save_events(handle, event_filter); } tracecmd_xml_end_sub_system(handle); tracecmd_xml_end_system(handle); return 0; } static void set_label_a(GtkWidget *widget) { gtk_widget_set_tooltip_text(widget, "Click left mouse on graph\n" "to set Marker A"); } static void set_label_b(GtkWidget *widget) { gtk_widget_set_tooltip_text(widget, "Shift and click left mouse on graph\n" "to set Marker B"); } static void set_label_cursor(GtkWidget *widget) { gtk_widget_set_tooltip_text(widget, "Double click Left mouse on graph\n" "to set Cursor"); } struct graph_info * trace_graph_create_with_callbacks(struct tracecmd_input *handle, struct graph_callbacks *cbs) { struct graph_info *ginfo; GtkWidget *table; GtkWidget *hbox; GtkWidget *label; GtkWidget *eventbox; GdkColor color; GdkColor colorAB; ginfo = g_new0(typeof(*ginfo), 1); g_assert(ginfo != NULL); if (handle) load_handle(ginfo, handle); ginfo->handle = handle; ginfo->callbacks = cbs; ginfo->task_filter = filter_task_hash_alloc(); ginfo->hide_tasks = filter_task_hash_alloc(); ginfo->widget = gtk_vbox_new(FALSE, 0); gtk_widget_show(ginfo->widget); ginfo->status_hbox = gtk_hbox_new(FALSE, 0); gtk_box_pack_start(GTK_BOX(ginfo->widget), ginfo->status_hbox, FALSE, FALSE, 0); gtk_widget_show(ginfo->status_hbox); table = gtk_table_new(1, 23, FALSE); gtk_box_pack_start(GTK_BOX(ginfo->status_hbox), table, FALSE, FALSE, 0); gtk_widget_show(table); color.red = (0xff) *(65535/255); color.green = (0xff) *(65535/255); color.blue = (0xff) *(65535/255); /* --- Pointer --- */ label = gtk_label_new("Pointer:"); gtk_table_attach(GTK_TABLE(table), label, 0, 1, 0, 1, GTK_EXPAND, GTK_EXPAND, 3, 3); gtk_widget_show(label); ginfo->pointer_time = gtk_label_new("0.0"); eventbox = gtk_event_box_new(); gtk_widget_show(eventbox); gtk_widget_modify_bg(eventbox, GTK_STATE_NORMAL, &color); gtk_container_add(GTK_CONTAINER(eventbox), ginfo->pointer_time); gtk_table_attach(GTK_TABLE(table), eventbox, 1, 3, 0, 1, GTK_EXPAND, GTK_EXPAND, 3, 3); gtk_widget_show(ginfo->pointer_time); /* --- Cursor --- */ label = gtk_label_new("Cursor:"); set_label_cursor(label); gtk_table_attach(GTK_TABLE(table), label, 4, 5, 0, 1, GTK_EXPAND, GTK_EXPAND, 3, 3); gtk_widget_show(label); ginfo->cursor_label = gtk_label_new("0.0"); eventbox = gtk_event_box_new(); set_label_cursor(eventbox); gtk_widget_show(eventbox); gtk_widget_modify_bg(eventbox, GTK_STATE_NORMAL, &color); gtk_container_add(GTK_CONTAINER(eventbox), ginfo->cursor_label); gtk_table_attach(GTK_TABLE(table), eventbox, 6, 8, 0, 1, GTK_EXPAND, GTK_EXPAND, 3, 3); gtk_widget_show(ginfo->cursor_label); /* --- Marker A --- */ hbox = gtk_hbox_new(FALSE, 0); gtk_widget_show(hbox); label = gtk_label_new("Marker"); set_label_a(label); gtk_box_pack_start(GTK_BOX(hbox), label, FALSE, FALSE, 0); gtk_widget_show(label); label = gtk_label_new("A:"); colorAB.red = 0; colorAB.green = (0xff) *(65535/255); colorAB.blue = 0; eventbox = gtk_event_box_new(); set_label_a(eventbox); gtk_widget_show(eventbox); gtk_widget_modify_bg(eventbox, GTK_STATE_NORMAL, &colorAB); gtk_container_add(GTK_CONTAINER(eventbox), label); gtk_box_pack_start(GTK_BOX(hbox), eventbox, FALSE, FALSE, 0); gtk_widget_show(label); gtk_table_attach(GTK_TABLE(table), hbox, 9, 10, 0, 1, GTK_EXPAND, GTK_EXPAND, 3, 3); ginfo->marka_label = gtk_label_new("0.0"); eventbox = gtk_event_box_new(); set_label_a(eventbox); gtk_widget_show(eventbox); gtk_widget_modify_bg(eventbox, GTK_STATE_NORMAL, &color); gtk_container_add(GTK_CONTAINER(eventbox), ginfo->marka_label); gtk_table_attach(GTK_TABLE(table), eventbox, 11, 13, 0, 1, GTK_EXPAND, GTK_EXPAND, 3, 3); gtk_widget_show(ginfo->marka_label); /* --- Marker B --- */ hbox = gtk_hbox_new(FALSE, 0); gtk_widget_show(hbox); label = gtk_label_new("Marker"); set_label_b(label); gtk_box_pack_start(GTK_BOX(hbox), label, FALSE, FALSE, 0); gtk_widget_show(label); label = gtk_label_new("B:"); colorAB.red = (0xff) *(65535/255); colorAB.green = 0; colorAB.blue = 0; eventbox = gtk_event_box_new(); set_label_b(eventbox); gtk_widget_show(eventbox); gtk_widget_modify_bg(eventbox, GTK_STATE_NORMAL, &colorAB); gtk_container_add(GTK_CONTAINER(eventbox), label); gtk_box_pack_start(GTK_BOX(hbox), eventbox, FALSE, FALSE, 0); gtk_widget_show(label); gtk_table_attach(GTK_TABLE(table), hbox, 14, 15, 0, 1, GTK_EXPAND, GTK_EXPAND, 3, 3); gtk_widget_show(label); ginfo->markb_label = gtk_label_new("0.0"); eventbox = gtk_event_box_new(); set_label_b(eventbox); gtk_widget_show(eventbox); gtk_widget_modify_bg(eventbox, GTK_STATE_NORMAL, &color); gtk_container_add(GTK_CONTAINER(eventbox), ginfo->markb_label); gtk_table_attach(GTK_TABLE(table), eventbox, 16, 18, 0, 1, GTK_EXPAND, GTK_EXPAND, 3, 3); gtk_widget_show(ginfo->markb_label); /* --- Delta --- */ label = gtk_label_new("A,B Delta:"); gtk_table_attach(GTK_TABLE(table), label, 19, 20, 0, 1, GTK_EXPAND, GTK_EXPAND, 3, 3); gtk_widget_show(label); ginfo->delta_label = gtk_label_new("0.0"); eventbox = gtk_event_box_new(); gtk_widget_show(eventbox); gtk_widget_modify_bg(eventbox, GTK_STATE_NORMAL, &color); gtk_container_add(GTK_CONTAINER(eventbox), ginfo->delta_label); gtk_table_attach(GTK_TABLE(table), eventbox, 21, 23, 0, 1, GTK_EXPAND, GTK_EXPAND, 3, 3); gtk_widget_show(ginfo->delta_label); hbox = gtk_hbox_new(FALSE, 0); gtk_box_pack_start(GTK_BOX(ginfo->widget), hbox, TRUE, TRUE, 0); gtk_widget_show(hbox); ginfo->scrollwin = gtk_scrolled_window_new(NULL, NULL); gtk_scrolled_window_set_policy(GTK_SCROLLED_WINDOW(ginfo->scrollwin), GTK_POLICY_AUTOMATIC, GTK_POLICY_AUTOMATIC); gtk_widget_show(ginfo->scrollwin); ginfo->hadj = gtk_scrolled_window_get_hadjustment(GTK_SCROLLED_WINDOW(ginfo->scrollwin)); ginfo->info_scrollwin = gtk_scrolled_window_new(NULL, gtk_scrolled_window_get_vadjustment(GTK_SCROLLED_WINDOW(ginfo->scrollwin))); gtk_scrolled_window_set_policy(GTK_SCROLLED_WINDOW(ginfo->info_scrollwin), GTK_POLICY_NEVER, GTK_POLICY_NEVER); gtk_widget_show(ginfo->info_scrollwin); gtk_box_pack_start(GTK_BOX(hbox), ginfo->info_scrollwin, FALSE, FALSE, 0); ginfo->info = create_graph_info(ginfo); gtk_widget_show(ginfo->info); gtk_scrolled_window_add_with_viewport(GTK_SCROLLED_WINDOW(ginfo->info_scrollwin), ginfo->info); gtk_box_pack_start(GTK_BOX (hbox), ginfo->scrollwin, TRUE, TRUE, 0); gtk_signal_connect(GTK_OBJECT(ginfo->hadj), "value_changed", (GtkSignalFunc) value_changed, ginfo); ginfo->draw = gtk_drawing_area_new(); gtk_signal_connect(GTK_OBJECT(ginfo->draw), "expose_event", (GtkSignalFunc) expose_event, ginfo); gtk_signal_connect(GTK_OBJECT(ginfo->draw), "button_press_event", (GtkSignalFunc) button_press_event, ginfo); gtk_signal_connect(GTK_OBJECT(ginfo->draw), "configure_event", (GtkSignalFunc) configure_event, ginfo); gtk_signal_connect(GTK_OBJECT(ginfo->draw), "motion_notify_event", (GtkSignalFunc) motion_notify_event, ginfo); gtk_signal_connect(GTK_OBJECT(ginfo->draw), "button_release_event", (GtkSignalFunc) button_release_event, ginfo); gtk_signal_connect(GTK_OBJECT(ginfo->draw), "leave-notify-event", (GtkSignalFunc) leave_notify_event, ginfo); gtk_signal_connect(GTK_OBJECT(ginfo->draw), "destroy", (GtkSignalFunc) destroy_event, ginfo); gtk_widget_set_events(ginfo->draw, GDK_EXPOSURE_MASK | GDK_LEAVE_NOTIFY_MASK | GDK_BUTTON_PRESS_MASK | GDK_BUTTON_RELEASE_MASK | GDK_POINTER_MOTION_MASK | GDK_POINTER_MOTION_HINT_MASK | GDK_LEAVE_NOTIFY_MASK); gtk_scrolled_window_add_with_viewport(GTK_SCROLLED_WINDOW(ginfo->scrollwin), ginfo->draw); gtk_widget_show(ginfo->draw); return ginfo; } struct graph_info * trace_graph_create(struct tracecmd_input *handle) { return trace_graph_create_with_callbacks(handle, NULL); } trace-cmd-2.5.3/trace-graph.h000066400000000000000000000317201246701203100157250ustar00rootroot00000000000000/* * Copyright (C) 2009, 2010 Red Hat Inc, Steven Rostedt * * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; version 2 of the License (not later!) * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; if not, see * * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ */ #ifndef _TRACE_GRAPH_H #define _TRACE_GRAPH_H #include #include "trace-cmd.h" #include "trace-filter-hash.h" #include "trace-xml.h" struct graph_info; typedef void (graph_select_cb)(struct graph_info *ginfo, guint64 time); typedef void (graph_filter_cb)(struct graph_info *ginfo, struct filter_task *task_filter, struct filter_task *hide_tasks); /* Used for quereing what plots are defined */ enum graph_plot_type { PLOT_TYPE_OTHER, PLOT_TYPE_CPU, PLOT_TYPE_TASK, }; struct graph_plot; struct plot_info { gboolean line; int lcolor; unsigned long long ltime; gboolean box; int bcolor; unsigned long long bstart; unsigned long long bend; gboolean bfill; }; /* * match_time: * Return true if a selected time should expose plot. * Should only return true if an event has the exact time that * is passed in. * * start: * Initialize for plotting. This is called with the start time * to start plotting. * * plot_event: * This is called by the plotter. * color returns the color that should be printed. * line returns 1 or 0 if a line should be drawn. * ltime returns the time that the line should be drawn at * (ignored if line is 0) * box returns 1 or 0 if a box should be drawn * bstart is the time the box starts at * bend is the time the box ends at * (bstart and bend are ignored if box is 0) * bfill whether or not to fill the box (default TRUE) * time is the time of the current event * * end: * called at the end of the plotting in case the plotter needs to * release any resourses. * display_last_event: * If enough space between the event before and the event after * a event, the plot may ask to display that event. * The time will be given to find the event, the time may be before * the given event. * * find_record: * return a tracecmd record for a given time. * * display_info: * display information about a given time. A resolution is * passed in to show how much time is in 1 pixel. * * destroy: * destructor routine. Cleans up all resourses that the plot allocated. */ struct plot_callbacks { int (*match_time)(struct graph_info *, struct graph_plot *, unsigned long long time); void (*start)(struct graph_info *, struct graph_plot *, unsigned long long time); int (*plot_event)(struct graph_info *ginfo, struct graph_plot *plot, struct pevent_record *record, struct plot_info *info); void (*end)(struct graph_info *, struct graph_plot *); int (*display_last_event)(struct graph_info *ginfo, struct graph_plot *plot, struct trace_seq *s, unsigned long long time); struct pevent_record *(*find_record)(struct graph_info *, struct graph_plot *, unsigned long long time); int (*display_info)(struct graph_info *, struct graph_plot *, struct trace_seq *s, unsigned long long time); void (*destroy)(struct graph_info *, struct graph_plot *); }; struct graph_plot { enum graph_plot_type type; int pos; char *label; const struct plot_callbacks *cb; void *private; /* Used for drawing */ gint last_color; gint p1, p2, p3; GdkGC *gc; }; struct graph_callbacks { graph_select_cb *select; graph_filter_cb *filter; }; struct plot_list { struct plot_list *next; struct graph_plot *plot; }; struct plot_hash { struct plot_hash *next; struct plot_list *plots; gint val; }; #define PLOT_HASH_SIZE 1024 #define TASK_HASH_SIZE 1024 struct task_list; struct graph_info { struct tracecmd_input *handle; struct pevent *pevent; gint cpus; gint plots; struct graph_plot **plot_array; /* all plots */ struct graph_plot *plot_clicked; /* plot that was clicked on */ gint nr_task_hash; struct plot_hash *task_hash[PLOT_HASH_SIZE]; struct plot_hash *cpu_hash[PLOT_HASH_SIZE]; struct plot_list *all_recs; struct task_list *tasks[TASK_HASH_SIZE]; GtkWidget *widget; /* Box to hold graph */ GtkWidget *status_hbox; /* hbox holding status info */ GtkWidget *pointer_time; /* time that pointer is at */ GtkWidget *cursor_label; /* label showing cursor time */ GtkWidget *marka_label; /* label showing Marker A time */ GtkWidget *markb_label; /* label showing Marker B time */ GtkWidget *delta_label; /* label showing delta of B - A */ GtkWidget *scrollwin; /* graph scroll window */ GtkWidget *info_scrollwin; /* graph scroll window (for info widget) */ GtkWidget *info; /* info window */ GtkWidget *draw; GdkPixmap *curr_pixmap; /* pixmap backstore */ GdkPixmap *info_pixmap; /* pixmap backstore */ GtkAdjustment *hadj; /* scrollwindow horizontal adjust */ guint64 start_time; /* True start time of trace */ guint64 end_time; /* True end time of trace */ guint64 view_start_time; /* visible start time */ guint64 view_end_time; /* visible end time */ gint start_x; /* virutal start of visible area */ guint64 cursor; /* time of cursor (double clicked) */ gdouble resolution; /* pixels / time */ gint press_x; /* x where button is pressed */ gint last_x; /* last x seen while moving mouse */ gboolean line_active; /* set when button is pressed */ guint64 line_time; /* time line of where line_active is set */ guint64 marka_time; /* time that marker A is at */ guint64 markb_time; /* time that marker B is at */ gboolean show_marka; /* draw marker A line */ gboolean show_markb; /* draw marker B line */ gboolean zoom; /* set when shift button is pressed */ gdouble hadj_value; /* value to set hadj width */ gdouble hadj_page_size; /* visible size to set hadj */ gint draw_width; /* width of pixmap */ gint draw_height; /* height of pixmap */ gint full_width; /* width of full trace in pixels */ /* This includes non visible part of trace */ struct graph_callbacks *callbacks; /* call back hooks for changes to graph */ gboolean filter_enabled; gboolean filter_available; gboolean all_events; /* all events enabled */ struct event_filter *event_filter; /* filtered events */ /* cache of event fields */ gint ftrace_sched_switch_id; gint event_sched_switch_id; gint event_wakeup_id; gint event_wakeup_new_id; struct format_field *event_prev_state; struct format_field *event_pid_field; struct format_field *event_comm_field; struct format_field *ftrace_pid_field; struct format_field *ftrace_comm_field; struct format_field *wakeup_pid_field; struct format_field *wakeup_success_field; struct format_field *wakeup_new_pid_field; struct format_field *wakeup_new_success_field; gboolean read_comms; /* Read all comms on first load */ struct filter_task *task_filter; gint filter_task_selected; struct filter_task *hide_tasks; /* Box info for plot data info window */ gint plot_data_x; gint plot_data_y; gint plot_data_w; gint plot_data_h; }; struct graph_info * trace_graph_create(struct tracecmd_input *handle); struct graph_info * trace_graph_create_with_callbacks(struct tracecmd_input *handle, struct graph_callbacks *cbs); void trace_graph_select_by_time(struct graph_info *ginfo, guint64 time); void trace_graph_event_filter_callback(gboolean accept, gboolean all_events, gchar **systems, gint *events, gpointer data); void trace_graph_adv_filter_callback(gboolean accept, const gchar *text, gint *event_ids, gpointer data); static inline GtkWidget *trace_graph_get_draw(struct graph_info *ginfo) { return ginfo->draw; } static inline struct graph_callbacks *trace_graph_get_callbacks(struct graph_info *ginfo) { return ginfo->callbacks; } static inline GtkWidget *trace_graph_get_window(struct graph_info *ginfo) { return ginfo->widget; } void trace_graph_refresh(struct graph_info *ginfo); struct filter_task_item * trace_graph_filter_task_find_pid(struct graph_info *ginfo, gint pid); struct filter_task_item * trace_graph_hide_task_find_pid(struct graph_info *ginfo, gint pid); void trace_graph_filter_toggle(struct graph_info *ginfo); void trace_graph_filter_add_remove_task(struct graph_info *info, gint pid); void trace_graph_filter_hide_show_task(struct graph_info *ginfo, gint pid); void trace_graph_clear_tasks(struct graph_info *ginfo); void trace_graph_free_info(struct graph_info *ginfo); int trace_graph_load_handle(struct graph_info *ginfo, struct tracecmd_input *handle); int trace_graph_check_sched_switch(struct graph_info *ginfo, struct pevent_record *record, gint *pid, const char **comm); int trace_graph_check_sched_wakeup(struct graph_info *ginfo, struct pevent_record *record, gint *pid); gboolean trace_graph_filter_on_task(struct graph_info *ginfo, gint pid); gboolean trace_graph_filter_on_event(struct graph_info *ginfo, struct pevent_record *record); void trace_graph_copy_filter(struct graph_info *ginfo, gboolean all_events, struct event_filter *event_filter); gint *trace_graph_task_list(struct graph_info *ginfo); int trace_graph_load_filters(struct graph_info *ginfo, struct tracecmd_xml_handle *handle); int trace_graph_save_filters(struct graph_info *ginfo, struct tracecmd_xml_handle *handle); void trace_graph_update_filters(struct graph_info *ginfo, struct filter_task *task_filter, struct filter_task *hide_tasks); void trace_graph_refresh_filters(struct graph_info *ginfo); /* plots */ void trace_graph_plot_free(struct graph_info *ginfo); void trace_graph_plot_init(struct graph_info *ginfo); struct graph_plot *trace_graph_plot_append(struct graph_info *ginfo, const char *label, enum graph_plot_type type, const struct plot_callbacks *cb, void *data); struct graph_plot *trace_graph_plot_insert(struct graph_info *ginfo, int pos, const char *label, enum graph_plot_type type, const struct plot_callbacks *cb, void *data); void trace_graph_plot_remove(struct graph_info *ginfo, struct graph_plot *plot); struct plot_hash *trace_graph_plot_find_task(struct graph_info *ginfo, gint task); void trace_graph_plot_add_task(struct graph_info *ginfo, struct graph_plot *plot, gint task); void trace_graph_plot_remove_task(struct graph_info *ginfo, struct graph_plot *plot, gint task); struct plot_hash *trace_graph_plot_find_cpu(struct graph_info *ginfo, gint cpu); void trace_graph_plot_add_cpu(struct graph_info *ginfo, struct graph_plot *plot, gint cpu); void trace_graph_plot_remove_cpu(struct graph_info *ginfo, struct graph_plot *plot, gint cpu); void trace_graph_plot_add_all_recs(struct graph_info *ginfo, struct graph_plot *plot); void trace_graph_plot_remove_all_recs(struct graph_info *ginfo, struct graph_plot *plot); /* plot callbacks */ int trace_graph_plot_match_time(struct graph_info *ginfo, struct graph_plot *plot, unsigned long long time); int trace_graph_plot_display_last_event(struct graph_info *ginfo, struct graph_plot *plot, struct trace_seq *s, unsigned long long time); void trace_graph_plot_start(struct graph_info *ginfo, struct graph_plot *plot, unsigned long long time); int trace_graph_plot_event(struct graph_info *ginfo, struct graph_plot *plot, struct pevent_record *record, struct plot_info *info); void trace_graph_plot_end(struct graph_info *ginfo, struct graph_plot *plot); struct pevent_record * trace_graph_plot_find_record(struct graph_info *ginfo, struct graph_plot *plot, unsigned long long time); int trace_graph_plot_display_info(struct graph_info *ginfo, struct graph_plot *plot, struct trace_seq *s, unsigned long long time); /* cpu plot */ void graph_plot_init_cpus(struct graph_info *ginfo, int cpus); void graph_plot_cpus_plotted(struct graph_info *ginfo, gboolean *all_cpus, guint64 **cpu_mask); void graph_plot_cpus_update_callback(gboolean accept, gboolean all_cpus, guint64 *selected_cpu_mask, gpointer data); /* task plot */ void graph_plot_task(struct graph_info *ginfo, int pid, int pos); void graph_plot_task_update_callback(gboolean accept, gint *selected, gint *non_select, gpointer data); void graph_plot_task_plotted(struct graph_info *ginfo, gint **plotted); #endif /* _TRACE_GRAPH_H */ trace-cmd-2.5.3/trace-gui.h000066400000000000000000000040071246701203100154060ustar00rootroot00000000000000/* * Copyright (C) 2009, 2010 Red Hat Inc, Steven Rostedt * * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; version 2 of the License (not later!) * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; if not, see * * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ */ #ifndef _TRACE_GUI #define _TRACE_GUI #include enum trace_dialog_type { TRACE_GUI_INFO, TRACE_GUI_WARNING, TRACE_GUI_ERROR, TRACE_GUI_ASK, }; GtkWidget *trace_status_bar_new(void); enum trace_dialog_filter { TRACE_DIALOG_FILTER_NONE, TRACE_DIALOG_FILTER_DATA, TRACE_DIALOG_FILTER_FILTER, TRACE_DIALOG_FILTER_SETTING, }; void trace_dialog_register_window(GtkWidget *window); void trace_dialog_register_alt_warning(void (*alt)(const char *fmt, va_list ap)); void trace_show_help(GtkWidget *window, const gchar *link, GError **error); GtkResponseType trace_dialog(GtkWindow *parent, enum trace_dialog_type type, gchar *message, ...); gchar *trace_get_file_dialog_filter(const gchar *title, const char *open, enum trace_dialog_filter, gboolean warn); gchar *trace_get_file_dialog(const gchar *title, const char *open, gboolean warn); void trace_set_cursor(GdkCursorType type); void trace_put_cursor(void); void trace_freeze_all(void); void trace_unfreeze_all(void); GtkWidget * trace_create_combo_box(GtkWidget *hbox, const gchar *text, GtkTreeModel *(*combo_model_create)(gpointer data), gpointer data); #endif /* _TRACE_GUI */ trace-cmd-2.5.3/trace-hash-local.h000066400000000000000000000027771246701203100166510ustar00rootroot00000000000000/* * Copyright (C) 2009, Steven Rostedt * * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; version 2 of the License (not later!) * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; if not, see * * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ */ #ifndef _TRACE_HASH_LOCAL_H #define _TRACE_HASH_LOCAL_H static inline unsigned int trace_hash(int val) { int hash, tmp; hash = 12546869; /* random prime */ /* * The following hash is based off of Paul Hsieh's super fast hash: * http://www.azillionmonkeys.com/qed/hash.html * Note, he released this code unde the GPL 2.0 license, which * is the same as the license for the programs that use it here. */ hash += (val & 0xffff); tmp = (val >> 16) ^ hash; hash = (hash << 16) ^ tmp; hash += hash >> 11; hash ^= hash << 3; hash += hash >> 5; hash ^= hash << 4; hash += hash >> 17; hash ^= hash << 25; hash += hash >> 6; return hash; } #endif /* _TRACE_HASH_LOCAL_H */ trace-cmd-2.5.3/trace-hash.c000066400000000000000000000042731246701203100155450ustar00rootroot00000000000000/* * Copyright (C) 2014, Steven Rostedt * * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; version 2 of the License (not later!) * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; if not, see * * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ */ #include #include #include #include #include #include "trace-hash.h" int trace_hash_init(struct trace_hash *hash, int buckets) { memset(hash, 0, sizeof(*hash)); hash->buckets = calloc(sizeof(*hash->buckets), buckets); if (!hash->buckets) return -ENOMEM; hash->nr_buckets = buckets; /* If a power of two then we can shortcut */ if (!(buckets & (buckets - 1))) hash->power = buckets - 1; return 0; } void trace_hash_free(struct trace_hash *hash) { free(hash->buckets); } int trace_hash_add(struct trace_hash *hash, struct trace_hash_item *item) { struct trace_hash_item *next; int bucket = hash->power ? item->key & hash->power : item->key % hash->nr_buckets; if (hash->buckets[bucket]) { next = hash->buckets[bucket]; next->prev = item; } else next = NULL; item->next = next; item->prev = (struct trace_hash_item *)&hash->buckets[bucket]; hash->buckets[bucket] = item; return 1; } struct trace_hash_item * trace_hash_find(struct trace_hash *hash, unsigned long long key, trace_hash_func match, void *data) { struct trace_hash_item *item; int bucket = hash->power ? key & hash->power : key % hash->nr_buckets; for (item = hash->buckets[bucket]; item; item = item->next) { if (item->key == key) { if (!match) return item; if (match(item, data)) return item; } } return NULL; } trace-cmd-2.5.3/trace-hash.h000066400000000000000000000043251246701203100155500ustar00rootroot00000000000000/* * Copyright (C) 2014 Red Hat Inc, Steven Rostedt * * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; version 2 of the License (not later!) * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; if not, see * * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ */ #ifndef _TRACE_HASH_H #define _TRACE_HASH_H #include "trace-hash-local.h" #include "list.h" struct trace_hash_item { struct trace_hash_item *next; struct trace_hash_item *prev; unsigned long long key; }; struct trace_hash { struct trace_hash_item **buckets; int nr_buckets; int power; }; int trace_hash_init(struct trace_hash *hash, int buckets); void trace_hash_free(struct trace_hash *hash); int trace_hash_add(struct trace_hash *hash, struct trace_hash_item *item); static inline void trace_hash_del(struct trace_hash_item *item) { struct trace_hash_item *prev = item->prev; prev->next = item->next; if (item->next) item->next->prev = prev; } #define trace_hash_for_each_bucket(bucket, hash) \ for (bucket = (hash)->buckets; \ (bucket) < (hash)->buckets + (hash)->nr_buckets; (bucket)++) #define trace_hash_for_each_item(item, bucket) \ for ((item = *(bucket)); item; item = (item)->next) #define trace_hash_for_each_item_safe(item, n, bucket) \ for ((item = *(bucket)), n = item ? item->next : NULL; item; \ item = n, n = item ? (item)->next : NULL) #define trace_hash_while_item(item, bucket) \ while ((item = *(bucket))) typedef int (*trace_hash_func)(struct trace_hash_item *item, void *data); struct trace_hash_item * trace_hash_find(struct trace_hash *hash, unsigned long long key, trace_hash_func match, void *data); #endif /* _TRACE_HASH_H */ trace-cmd-2.5.3/trace-hist.c000066400000000000000000000574131246701203100155750ustar00rootroot00000000000000/* * Copyright (C) 2013 Red Hat Inc, Steven Rostedt * * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; version 2 of the License (not later!) * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; if not, see * * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ * * Several of the ideas in this file came from Arnaldo Carvalho de Melo's * work on the perf ui. */ #define _LARGEFILE64_SOURCE #include #include #include #include #include #include #include "trace-local.h" #include "list.h" static int sched_wakeup_type; static int sched_wakeup_new_type; static int sched_switch_type; static int function_type; static int function_graph_entry_type; static int function_graph_exit_type; static int kernel_stack_type; static int long_size; struct format_field *common_type_field; struct format_field *common_pid_field; struct format_field *sched_wakeup_comm_field; struct format_field *sched_wakeup_new_comm_field; struct format_field *sched_wakeup_pid_field; struct format_field *sched_wakeup_new_pid_field; struct format_field *sched_switch_prev_field; struct format_field *sched_switch_next_field; struct format_field *sched_switch_prev_pid_field; struct format_field *sched_switch_next_pid_field; struct format_field *function_ip_field; struct format_field *function_parent_ip_field; struct format_field *function_graph_entry_func_field; struct format_field *function_graph_entry_depth_field; struct format_field *function_graph_exit_func_field; struct format_field *function_graph_exit_depth_field; struct format_field *function_graph_exit_calltime_field; struct format_field *function_graph_exit_rettime_field; struct format_field *function_graph_exit_overrun_field; struct format_field *kernel_stack_caller_field; static int compact; static void *zalloc(size_t size) { return calloc(1, size); } static const char **ips; static int ips_idx; static int func_depth; static int current_pid = -1; struct stack_save { struct stack_save *next; const char **ips; int ips_idx; int func_depth; int pid; }; struct stack_save *saved_stacks; static void reset_stack(void) { current_pid = -1; ips_idx = 0; func_depth = 0; /* Don't free here, it may be saved */ ips = NULL; } static void save_stack(void) { struct stack_save *stack; stack = zalloc(sizeof(*stack)); if (!stack) die("malloc"); stack->pid = current_pid; stack->ips_idx = ips_idx; stack->func_depth = func_depth; stack->ips = ips; stack->next = saved_stacks; saved_stacks = stack; reset_stack(); } static void restore_stack(int pid) { struct stack_save *last = NULL, *stack; for (stack = saved_stacks; stack; last = stack, stack = stack->next) { if (stack->pid == pid) break; } if (!stack) return; if (last) last->next = stack->next; else saved_stacks = stack->next; current_pid = stack->pid; ips_idx = stack->ips_idx; func_depth = stack->func_depth; free(ips); ips = stack->ips; free(stack); } struct pid_list; struct chain { struct chain *next; struct chain *sibling; const char *func; struct chain *parents; struct pid_list *pid_list; int nr_parents; int count; int total; int event; }; static struct chain *chains; static int nr_chains; static int total_counts; struct pid_list { struct pid_list *next; struct chain chain; int pid; }; static struct pid_list *list_pids; static struct pid_list all_pid_list; static void add_chain(struct chain *chain) { if (chain->next) die("chain not null?"); chain->next = chains; chains = chain; nr_chains++; } static void insert_chain(struct pid_list *pid_list, struct chain *chain_list, const char **chain_str, int size, int event) { struct chain *chain; /* Record all counts */ if (!chain_list->func) total_counts++; chain_list->count++; if (!size--) return; for (chain = chain_list->parents; chain; chain = chain->sibling) { if (chain->func == chain_str[size]) { insert_chain(pid_list, chain, chain_str, size, 0); return; } } chain_list->nr_parents++; chain = zalloc(sizeof(struct chain)); if (!chain) die("malloc"); chain->sibling = chain_list->parents; chain_list->parents = chain; chain->func = chain_str[size]; chain->pid_list = pid_list; chain->event = event; /* NULL func means this is the top level of the chain. Store it */ if (!chain_list->func) add_chain(chain); insert_chain(pid_list, chain, chain_str, size, 0); } static void save_call_chain(int pid, const char **chain, int size, int event) { static struct pid_list *pid_list; if (compact) pid_list = &all_pid_list; else if (!pid_list || pid_list->pid != pid) { for (pid_list = list_pids; pid_list; pid_list = pid_list->next) { if (pid_list->pid == pid) break; } if (!pid_list) { pid_list = zalloc(sizeof(*pid_list)); if (!pid_list) die("malloc"); pid_list->pid = pid; pid_list->next = list_pids; list_pids = pid_list; } } insert_chain(pid_list, &pid_list->chain, chain, size, event); } static void save_stored_stacks(void) { while (saved_stacks) { restore_stack(saved_stacks->pid); save_call_chain(current_pid, ips, ips_idx, 0); } } static void flush_stack(void) { if (current_pid < 0) return; save_call_chain(current_pid, ips, ips_idx, 0); free(ips); reset_stack(); } static void push_stack_func(const char *func) { ips_idx++; ips = realloc(ips, ips_idx * sizeof(char *)); ips[ips_idx - 1] = func; } static void pop_stack_func(void) { ips_idx--; ips[ips_idx] = NULL; } static void process_function(struct pevent *pevent, struct pevent_record *record) { unsigned long long parent_ip; unsigned long long ip; unsigned long long val; const char *parent; const char *func; int pid; int ret; ret = pevent_read_number_field(common_pid_field, record->data, &val); if (ret < 0) die("no pid field for function?"); ret = pevent_read_number_field(function_ip_field, record->data, &ip); if (ret < 0) die("no ip field for function?"); ret = pevent_read_number_field(function_parent_ip_field, record->data, &parent_ip); if (ret < 0) die("no parent ip field for function?"); pid = val; func = pevent_find_function(pevent, ip); parent = pevent_find_function(pevent, parent_ip); if (current_pid >= 0 && pid != current_pid) { save_stack(); restore_stack(pid); } current_pid = pid; if (ips_idx) { if (ips[ips_idx - 1] == parent) push_stack_func(func); else { save_call_chain(pid, ips, ips_idx, 0); while (ips_idx) { pop_stack_func(); if (ips[ips_idx - 1] == parent) { push_stack_func(func); break; } } } } /* The above check can set ips_idx to zero again */ if (!ips_idx) { push_stack_func(parent); push_stack_func(func); } } static void process_function_graph_entry(struct pevent *pevent, struct pevent_record *record) { unsigned long long depth; unsigned long long ip; unsigned long long val; const char *func; int pid; int ret; ret = pevent_read_number_field(common_pid_field, record->data, &val); if (ret < 0) die("no pid field for function graph entry?"); ret = pevent_read_number_field(function_graph_entry_func_field, record->data, &ip); if (ret < 0) die("no ip field for function graph entry?"); ret = pevent_read_number_field(function_graph_entry_depth_field, record->data, &depth); if (ret < 0) die("no parent ip field for function entry?"); pid = val; func = pevent_find_function(pevent, ip); if (current_pid >= 0 && pid != current_pid) { save_stack(); restore_stack(pid); } current_pid = pid; if (depth != ips_idx) { save_call_chain(pid, ips, ips_idx, 0); while (ips_idx > depth) pop_stack_func(); } func_depth = depth; push_stack_func(func); } static void process_function_graph_exit(struct pevent *pevent, struct pevent_record *record) { unsigned long long depth; unsigned long long val; int pid; int ret; ret = pevent_read_number_field(common_pid_field, record->data, &val); if (ret < 0) die("no pid field for function graph exit?"); ret = pevent_read_number_field(function_graph_exit_depth_field, record->data, &depth); if (ret < 0) die("no parent ip field for function?"); pid = val; if (current_pid >= 0 && pid != current_pid) { save_stack(); restore_stack(pid); } current_pid = pid; if (ips_idx != depth) { save_call_chain(pid, ips, ips_idx, 0); while (ips_idx > depth) pop_stack_func(); } func_depth = depth - 1; } static int pending_pid = -1; static const char **pending_ips; static int pending_ips_idx; static void reset_pending_stack(void) { pending_pid = -1; pending_ips_idx = 0; free(pending_ips); pending_ips = NULL; } static void copy_stack_to_pending(int pid) { pending_pid = pid; pending_ips = zalloc(sizeof(char *) * ips_idx); memcpy(pending_ips, ips, sizeof(char *) * ips_idx); pending_ips_idx = ips_idx; } static void process_kernel_stack(struct pevent *pevent, struct pevent_record *record) { struct format_field *field = kernel_stack_caller_field; unsigned long long val; void *data = record->data; int do_restore = 0; int pid; int ret; ret = pevent_read_number_field(common_pid_field, record->data, &val); if (ret < 0) die("no pid field for function?"); pid = val; if (pending_pid >= 0 && pid != pending_pid) { reset_pending_stack(); return; } if (!field) die("no caller field for kernel stack?"); if (pending_pid >= 0) { if (current_pid >= 0) { save_stack(); do_restore = 1; } } else { /* function stack trace? */ if (current_pid >= 0) { copy_stack_to_pending(current_pid); free(ips); reset_stack(); } } current_pid = pid; /* Need to start at the end of the callers and work up */ for (data += field->offset; data < record->data + record->size; data += long_size) { unsigned long long addr; addr = pevent_read_number(pevent, data, long_size); if ((long_size == 8 && addr == (unsigned long long)-1) || ((int)addr == -1)) break; } for (data -= long_size; data >= record->data + field->offset; data -= long_size) { unsigned long long addr; const char *func; addr = pevent_read_number(pevent, data, long_size); func = pevent_find_function(pevent, addr); if (func) push_stack_func(func); } if (pending_pid >= 0) { push_stack_func(pending_ips[pending_ips_idx - 1]); reset_pending_stack(); } save_call_chain(current_pid, ips, ips_idx, 1); if (do_restore) restore_stack(current_pid); } static void process_sched_wakeup(struct pevent *pevent, struct pevent_record *record, int type) { unsigned long long val; const char *comm; int pid; int ret; if (type == sched_wakeup_type) { comm = (char *)(record->data + sched_wakeup_comm_field->offset); ret = pevent_read_number_field(sched_wakeup_pid_field, record->data, &val); if (ret < 0) die("no pid field in sched_wakeup?"); } else { comm = (char *)(record->data + sched_wakeup_new_comm_field->offset); ret = pevent_read_number_field(sched_wakeup_new_pid_field, record->data, &val); if (ret < 0) die("no pid field in sched_wakeup_new?"); } pid = val; pevent_register_comm(pevent, comm, pid); } static void process_sched_switch(struct pevent *pevent, struct pevent_record *record) { unsigned long long val; const char *comm; int pid; int ret; comm = (char *)(record->data + sched_switch_prev_field->offset); ret = pevent_read_number_field(sched_switch_prev_pid_field, record->data, &val); if (ret < 0) die("no prev_pid field in sched_switch?"); pid = val; pevent_register_comm(pevent, comm, pid); comm = (char *)(record->data + sched_switch_next_field->offset); ret = pevent_read_number_field(sched_switch_next_pid_field, record->data, &val); if (ret < 0) die("no next_pid field in sched_switch?"); pid = val; pevent_register_comm(pevent, comm, pid); } static void process_event(struct pevent *pevent, struct pevent_record *record, int type) { struct event_format *event; const char *event_name; unsigned long long val; int pid; int ret; if (pending_pid >= 0) { save_call_chain(pending_pid, pending_ips, pending_ips_idx, 1); reset_pending_stack(); } event = pevent_data_event_from_type(pevent, type); event_name = event->name; ret = pevent_read_number_field(common_pid_field, record->data, &val); if (ret < 0) die("no pid field for function?"); pid = val; /* * Even if function or function graph tracer is running, * if the user ran with stack traces on events, we want to use * that instead. But unfortunately, that stack doesn't come * until after the event. Thus, we only add the event into * the pending stack. */ push_stack_func(event_name); copy_stack_to_pending(pid); pop_stack_func(); } static void process_record(struct pevent *pevent, struct pevent_record *record) { unsigned long long val; int type; pevent_read_number_field(common_type_field, record->data, &val); type = val; if (type == function_type) return process_function(pevent, record); if (type == function_graph_entry_type) return process_function_graph_entry(pevent, record); if (type == function_graph_exit_type) return process_function_graph_exit(pevent, record); if (type == kernel_stack_type) return process_kernel_stack(pevent, record); if (type == sched_wakeup_type || type == sched_wakeup_new_type) process_sched_wakeup(pevent, record, type); else if (type == sched_switch_type) process_sched_switch(pevent, record); process_event(pevent, record, type); } static struct event_format * update_event(struct pevent *pevent, const char *sys, const char *name, int *id) { struct event_format *event; event = pevent_find_event_by_name(pevent, sys, name); if (!event) return NULL; *id = event->id; return event; } static void update_sched_wakeup(struct pevent *pevent) { struct event_format *event; event = update_event(pevent, "sched", "sched_wakeup", &sched_wakeup_type); if (!event) return; sched_wakeup_comm_field = pevent_find_field(event, "comm"); sched_wakeup_pid_field = pevent_find_field(event, "pid"); } static void update_sched_wakeup_new(struct pevent *pevent) { struct event_format *event; event = update_event(pevent, "sched", "sched_wakeup_new", &sched_wakeup_new_type); if (!event) return; sched_wakeup_new_comm_field = pevent_find_field(event, "comm"); sched_wakeup_new_pid_field = pevent_find_field(event, "pid"); } static void update_sched_switch(struct pevent *pevent) { struct event_format *event; event = update_event(pevent, "sched", "sched_switch", &sched_switch_type); if (!event) return; sched_switch_prev_field = pevent_find_field(event, "prev_comm"); sched_switch_next_field = pevent_find_field(event, "next_comm"); sched_switch_prev_pid_field = pevent_find_field(event, "prev_pid"); sched_switch_next_pid_field = pevent_find_field(event, "next_pid"); } static void update_function(struct pevent *pevent) { struct event_format *event; event = update_event(pevent, "ftrace", "function", &function_type); if (!event) return; function_ip_field = pevent_find_field(event, "ip"); function_parent_ip_field = pevent_find_field(event, "parent_ip"); } static void update_function_graph_entry(struct pevent *pevent) { struct event_format *event; event = update_event(pevent, "ftrace", "funcgraph_entry", &function_graph_entry_type); if (!event) return; function_graph_entry_func_field = pevent_find_field(event, "func"); function_graph_entry_depth_field = pevent_find_field(event, "depth"); } static void update_function_graph_exit(struct pevent *pevent) { struct event_format *event; event = update_event(pevent, "ftrace", "funcgraph_exit", &function_graph_exit_type); if (!event) return; function_graph_exit_func_field = pevent_find_field(event, "func"); function_graph_exit_depth_field = pevent_find_field(event, "depth"); function_graph_exit_calltime_field = pevent_find_field(event, "calltime"); function_graph_exit_rettime_field = pevent_find_field(event, "rettime"); function_graph_exit_overrun_field = pevent_find_field(event, "overrun"); } static void update_kernel_stack(struct pevent *pevent) { struct event_format *event; event = update_event(pevent, "ftrace", "kernel_stack", &kernel_stack_type); if (!event) return; kernel_stack_caller_field = pevent_find_field(event, "caller"); } enum field { NEXT_PTR, SIB_PTR }; static struct chain *next_ptr(struct chain *chain, enum field field) { if (field == NEXT_PTR) return chain->next; return chain->sibling; } static struct chain *split_chain(struct chain *orig, int size, enum field field) { struct chain *chain; int i; if (size < 2) return NULL; for (i = 1; i < (size + 1) / 2; i++, orig = next_ptr(orig, field)) ; if (field == NEXT_PTR) { chain = orig->next; orig->next = NULL; } else { chain = orig->sibling; orig->sibling = NULL; } return chain; } static struct chain * merge_chains(struct chain *a, int nr_a, struct chain *b, int nr_b, enum field field) { struct chain *chain; struct chain *final; struct chain **next = &final; int i; if (!a) return b; if (!b) return a; for (i = 0, chain = a; chain; i++, chain = next_ptr(chain, field)) ; if (i != nr_a) die("WTF %d %d", i, nr_a); chain = split_chain(a, nr_a, field); a = merge_chains(chain, nr_a / 2, a, (nr_a + 1) / 2, field); chain = split_chain(b, nr_b, field); b = merge_chains(chain, nr_b / 2, b, (nr_b + 1) / 2, field); while (a && b) { if (a->count > b->count) { *next = a; if (field == NEXT_PTR) next = &a->next; else next = &a->sibling; a = *next; *next = NULL; } else { *next = b; if (field == NEXT_PTR) next = &b->next; else next = &b->sibling; b = *next; *next = NULL; } } if (a) *next = a; else *next = b; return final; } static void sort_chain_parents(struct chain *chain) { struct chain *parent; parent = split_chain(chain->parents, chain->nr_parents, SIB_PTR); chain->parents = merge_chains(parent, chain->nr_parents / 2, chain->parents, (chain->nr_parents + 1) / 2, SIB_PTR); for (chain = chain->parents; chain; chain = chain->sibling) sort_chain_parents(chain); } static void sort_chains(void) { struct chain *chain; chain = split_chain(chains, nr_chains, NEXT_PTR); /* The original always has more or equal to the split */ chains = merge_chains(chain, nr_chains / 2, chains, (nr_chains + 1) / 2, NEXT_PTR); for (chain = chains; chain; chain = chain->next) sort_chain_parents(chain); } static double get_percent(int total, int partial) { return ((double)partial / (double)total) * 100.0; } static int single_chain(struct chain *chain) { if (chain->nr_parents > 1) return 0; if (!chain->parents) return 1; return single_chain(chain->parents); } #define START " |\n" #define TICK " --- " #define BLANK " " #define LINE " |" #define INDENT " " unsigned long long line_mask; void make_indent(int indent) { int i; for (i = 0; i < indent; i++) { if (line_mask & (1 << i)) printf(LINE); else printf(INDENT); } } static void print_single_parent(struct chain *chain, int indent) { make_indent(indent); printf(BLANK); printf("%s\n", chain->parents->func); } static void dump_chain(struct pevent *pevent, struct chain *chain, int indent) { if (!chain->parents) return; print_single_parent(chain, indent); dump_chain(pevent, chain->parents, indent); } static void print_parents(struct pevent *pevent, struct chain *chain, int indent) { struct chain *parent = chain->parents; int x; if (single_chain(chain)) { dump_chain(pevent, chain, indent); return; } line_mask |= 1ULL << (indent); for (x = 0; parent; x++, parent = parent->sibling) { struct chain *save_parent; make_indent(indent + 1); printf("\n"); make_indent(indent + 1); printf("--%%%.2f-- %s # %d\n", get_percent(chain->count, parent->count), parent->func, parent->count); if (x == chain->nr_parents - 1) line_mask &= (1ULL << indent) - 1; if (single_chain(parent)) dump_chain(pevent, parent, indent + 1); else { save_parent = parent; while (parent && parent->parents && parent->nr_parents < 2 && parent->parents->count == parent->count) { print_single_parent(parent, indent + 1); parent = parent->parents; } if (parent) print_parents(pevent, parent, indent + 1); parent = save_parent; } } } static void print_chains(struct pevent *pevent) { struct chain *chain = chains; int pid; for (; chain; chain = chain->next) { pid = chain->pid_list->pid; if (chain != chains) printf("\n"); if (compact) printf(" %%%3.2f %30s #%d\n", get_percent(total_counts, chain->count), chain->func, chain->count); else printf(" %%%3.2f (%d) %s %30s #%d\n", get_percent(total_counts, chain->count), pid, pevent_data_comm_from_pid(pevent, pid), chain->func, chain->count); printf(START); if (chain->event) printf(TICK "*%s*\n", chain->func); else printf(TICK "%s\n", chain->func); print_parents(pevent, chain, 0); } } static void do_trace_hist(struct tracecmd_input *handle) { struct pevent *pevent = tracecmd_get_pevent(handle); struct event_format *event; struct pevent_record *record; int cpus; int cpu; int ret; ret = tracecmd_init_data(handle); if (ret < 0) die("failed to init data"); if (ret > 0) die("trace-cmd hist does not work with latency traces\n"); cpus = tracecmd_cpus(handle); /* Need to get any event */ for (cpu = 0; cpu < cpus; cpu++) { record = tracecmd_peek_data(handle, cpu); if (record) break; } if (!record) die("No records found in file"); ret = pevent_data_type(pevent, record); event = pevent_data_event_from_type(pevent, ret); long_size = tracecmd_long_size(handle); common_type_field = pevent_find_common_field(event, "common_type"); if (!common_type_field) die("Can't find a 'type' field?"); common_pid_field = pevent_find_common_field(event, "common_pid"); if (!common_pid_field) die("Can't find a 'pid' field?"); update_sched_wakeup(pevent); update_sched_wakeup_new(pevent); update_sched_switch(pevent); update_function(pevent); update_function_graph_entry(pevent); update_function_graph_exit(pevent); update_kernel_stack(pevent); for (cpu = 0; cpu < cpus; cpu++) { for (;;) { struct pevent_record *record; record = tracecmd_read_data(handle, cpu); if (!record) break; /* If we missed events, just flush out the current stack */ if (record->missed_events) flush_stack(); process_record(pevent, record); free_record(record); } } if (current_pid >= 0) save_call_chain(current_pid, ips, ips_idx, 0); if (pending_pid >= 0) save_call_chain(pending_pid, pending_ips, pending_ips_idx, 1); save_stored_stacks(); sort_chains(); print_chains(pevent); } void trace_hist(int argc, char **argv) { struct tracecmd_input *handle; const char *input_file = NULL; int ret; for (;;) { int c; c = getopt(argc-1, argv+1, "+hi:P"); if (c == -1) break; switch (c) { case 'h': usage(argv); break; case 'i': if (input_file) die("Only one input for historgram"); input_file = optarg; break; case 'P': compact = 1; break; default: usage(argv); } } if ((argc - optind) >= 2) { if (input_file) usage(argv); input_file = argv[optind + 1]; } if (!input_file) input_file = "trace.dat"; handle = tracecmd_alloc(input_file); if (!handle) die("can't open %s\n", input_file); ret = tracecmd_read_headers(handle); if (ret) return; do_trace_hist(handle); tracecmd_close(handle); } trace-cmd-2.5.3/trace-hooks.c000066400000000000000000000073721246701203100157500ustar00rootroot00000000000000/* * Copyright (C) 2015 Red Hat Inc, Steven Rostedt * * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ * This program is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; * version 2.1 of the License (not later!) * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this program; if not, see * * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ */ #include #include #include "trace-cmd.h" struct hook_list *tracecmd_create_event_hook(const char *arg) { struct hook_list *hook; char *system = NULL; char *event; char *match; char *flags = NULL; char *pid = NULL; char *str; char *tok; int index; int ch; int i; hook = malloc_or_die(sizeof(*hook)); memset(hook, 0, sizeof(*hook)); str = strdup(arg); if (!str) die("malloc"); hook->str = str; hook->hook = arg; /* * Hooks are in the form of: * [:],[,]/ * [:],[,] * * Where start_system, start_pid, end_system, and flags are all * optional. * * Flags are (case insensitive): * P - pinned to cpu (wont migrate) * G - global, not hooked to task - currently ignored. * S - save stacks for this event. */ tok = strtok(str, ":,"); if (!tok) goto invalid_tok; /* See what the token was from the original arg */ index = strlen(tok); if (arg[index] == ':') { /* this is a system, the next token must be ',' */ system = tok; tok = strtok(NULL, ","); if (!tok) goto invalid_tok; } event = tok; tok = strtok(NULL, ",/"); if (!tok) goto invalid_tok; match = tok; index = strlen(tok) + tok - str; if (arg[index] == ',') { tok = strtok(NULL, "/"); if (!tok) goto invalid_tok; pid = tok; } hook->start_system = system; hook->start_event = event; hook->start_match = match; hook->pid = pid; /* Now process the end event */ system = NULL; tok = strtok(NULL, ":,"); if (!tok) goto invalid_tok; /* See what the token was from the original arg */ index = tok - str + strlen(tok); if (arg[index] == ':') { /* this is a system, the next token must be ',' */ system = tok; tok = strtok(NULL, ","); if (!tok) goto invalid_tok; } event = tok; tok = strtok(NULL, ","); if (!tok) goto invalid_tok; match = tok; index = strlen(tok) + tok - str; if (arg[index] == ',') { tok = strtok(NULL, ""); if (!tok) goto invalid_tok; flags = tok; } hook->end_system = system; hook->end_event = event; hook->end_match = match; hook->migrate = 1; if (flags) { for (i = 0; flags[i]; i++) { ch = tolower(flags[i]); switch (ch) { case 'p': hook->migrate = 0; break; case 'g': hook->global = 1; break; case 's': hook->stack = 1; break; default: warning("unknown flag %c\n", flags[i]); } } } printf("start %s:%s:%s (%s) end %s:%s:%s (%s)\n", hook->start_system, hook->start_event, hook->start_match, hook->pid, hook->end_system, hook->end_event, hook->end_match, flags); return hook; invalid_tok: die("Invalid hook format '%s'", arg); return NULL; } void tracecmd_free_hooks(struct hook_list *hooks) { struct hook_list *hook; while (hooks) { hook = hooks; hooks = hooks->next; free(hook->str); free(hook); } } trace-cmd-2.5.3/trace-input.c000066400000000000000000002000041246701203100157470ustar00rootroot00000000000000/* * Copyright (C) 2009, 2010 Red Hat Inc, Steven Rostedt * * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ * This program is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; * version 2.1 of the License (not later!) * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this program; if not, see * * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ */ #define _LARGEFILE64_SOURCE #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include "trace-cmd-local.h" #include "kbuffer.h" #include "list.h" #define MISSING_EVENTS (1 << 31) #define MISSING_STORED (1 << 30) #define COMMIT_MASK ((1 << 27) - 1) /* for debugging read instead of mmap */ static int force_read = 0; struct page { struct list_head list; off64_t offset; struct tracecmd_input *handle; void *map; int ref_count; long long lost_events; #if DEBUG_RECORD struct pevent_record *records; #endif }; struct cpu_data { /* the first two never change */ unsigned long long file_offset; unsigned long long file_size; unsigned long long offset; unsigned long long size; unsigned long long timestamp; struct list_head pages; struct pevent_record *next; struct page *page; struct kbuffer *kbuf; int cpu; int pipe_fd; }; struct input_buffer_instance { char *name; size_t offset; }; struct tracecmd_input { struct pevent *pevent; struct plugin_list *plugin_list; struct tracecmd_input *parent; unsigned long flags; int fd; int long_size; int page_size; int cpus; int ref; int nr_buffers; /* buffer instances */ bool use_trace_clock; bool read_page; bool use_pipe; struct cpu_data *cpu_data; unsigned long long ts_offset; char * cpustats; char * uname; struct input_buffer_instance *buffers; struct tracecmd_ftrace finfo; struct hook_list *hooks; /* file information */ size_t header_files_start; size_t ftrace_files_start; size_t event_files_start; size_t total_file_size; }; __thread struct tracecmd_input *tracecmd_curr_thread_handle; void tracecmd_set_flag(struct tracecmd_input *handle, int flag) { handle->flags |= flag; } void tracecmd_clear_flag(struct tracecmd_input *handle, int flag) { handle->flags &= ~flag; } #if DEBUG_RECORD static void remove_record(struct page *page, struct pevent_record *record) { if (record->prev) record->prev->next = record->next; else page->records = record->next; if (record->next) record->next->prev = record->prev; } static void add_record(struct page *page, struct pevent_record *record) { if (page->records) page->records->prev = record; record->next = page->records; record->prev = NULL; page->records = record; } static const char *show_records(struct list_head *pages) { static char buf[BUFSIZ + 1]; struct pevent_record *record; struct page *page; int len; memset(buf, 0, sizeof(buf)); len = 0; list_for_each_entry(page, pages, list) { for (record = page->records; record; record = record->next) { int n; n = snprintf(buf+len, BUFSIZ - len, " 0x%lx", record->alloc_addr); len += n; if (len >= BUFSIZ) break; } } return buf; } #else static inline void remove_record(struct page *page, struct pevent_record *record) {} static inline void add_record(struct page *page, struct pevent_record *record) {} static const char *show_records(struct list_head *pages) { return ""; } #endif static int init_cpu(struct tracecmd_input *handle, int cpu); static int do_read(struct tracecmd_input *handle, void *data, int size) { int tot = 0; int r; do { r = read(handle->fd, data, size - tot); tot += r; if (!r) break; if (r < 0) return r; } while (tot != size); return tot; } static int do_read_check(struct tracecmd_input *handle, void *data, int size) { int ret; ret = do_read(handle, data, size); if (ret < 0) return ret; if (ret != size) return -1; return 0; } static char *read_string(struct tracecmd_input *handle) { char buf[BUFSIZ]; char *str = NULL; int size = 0; int i; int r; for (;;) { r = do_read(handle, buf, BUFSIZ); if (r < 0) goto fail; if (!r) goto fail; for (i = 0; i < r; i++) { if (!buf[i]) break; } if (i < r) break; if (str) { size += BUFSIZ; str = realloc(str, size); if (!str) return NULL; memcpy(str + (size - BUFSIZ), buf, BUFSIZ); } else { size = BUFSIZ; str = malloc(size); if (!str) return NULL; memcpy(str, buf, size); } } /* move the file descriptor to the end of the string */ r = lseek(handle->fd, -(r - (i+1)), SEEK_CUR); if (r < 0) goto fail; if (str) { size += i + 1; str = realloc(str, size); if (!str) return NULL; memcpy(str + (size - i), buf, i); str[size] = 0; } else { size = i + 1; str = malloc(size); if (!str) return NULL; memcpy(str, buf, i); str[i] = 0; } return str; fail: if (str) free(str); return NULL; } static unsigned int read4(struct tracecmd_input *handle) { struct pevent *pevent = handle->pevent; unsigned int data; if (do_read_check(handle, &data, 4)) return -1; return __data2host4(pevent, data); } static unsigned long long read8(struct tracecmd_input *handle) { struct pevent *pevent = handle->pevent; unsigned long long data; if (do_read_check(handle, &data, 8)) return -1; return __data2host8(pevent, data); } static int read_header_files(struct tracecmd_input *handle) { struct pevent *pevent = handle->pevent; long long size; char *header; char buf[BUFSIZ]; if (do_read_check(handle, buf, 12)) return -1; if (memcmp(buf, "header_page", 12) != 0) return -1; size = read8(handle); if (size < 0) return -1; header = malloc(size); if (!header) return -1; if (do_read_check(handle, header, size)) goto failed_read; pevent_parse_header_page(pevent, header, size, handle->long_size); free(header); /* * The size field in the page is of type long, * use that instead, since it represents the kernel. */ handle->long_size = pevent->header_page_size_size; if (do_read_check(handle, buf, 13)) return -1; if (memcmp(buf, "header_event", 13) != 0) return -1; size = read8(handle); if (size < 0) return -1; header = malloc(size); if (!header) return -1; if (do_read_check(handle, header, size)) goto failed_read; free(header); handle->ftrace_files_start = lseek64(handle->fd, 0, SEEK_CUR); return 0; failed_read: free(header); return -1; } static int regex_event_buf(const char *file, int size, regex_t *epreg) { char *buf; char *line; int ret; buf = malloc(size + 1); if (!buf) die("malloc"); strncpy(buf, file, size); buf[size] = 0; /* get the name from the first line */ line = strtok(buf, "\n"); if (!line) { warning("No newline found in '%s'", buf); return 0; } /* skip name if it is there */ if (strncmp(line, "name: ", 6) == 0) line += 6; ret = regexec(epreg, line, 0, NULL, 0) == 0; free(buf); return ret; } static int read_ftrace_file(struct tracecmd_input *handle, unsigned long long size, int print, regex_t *epreg) { struct pevent *pevent = handle->pevent; char *buf; buf = malloc(size); if (!buf) return -1; if (do_read_check(handle, buf, size)) { free(buf); return -1; } if (epreg) { if (print || regex_event_buf(buf, size, epreg)) printf("%.*s\n", (int)size, buf); } else { if (pevent_parse_event(pevent, buf, size, "ftrace")) pevent->parsing_failures = 1; } free(buf); return 0; } static int read_event_file(struct tracecmd_input *handle, char *system, unsigned long long size, int print, int *sys_printed, regex_t *epreg) { struct pevent *pevent = handle->pevent; char *buf; buf = malloc(size); if (!buf) return -1; if (do_read_check(handle, buf, size)) { free(buf); return -1; } if (epreg) { if (print || regex_event_buf(buf, size, epreg)) { if (!*sys_printed) { printf("\nsystem: %s\n", system); *sys_printed = 1; } printf("%.*s\n", (int)size, buf); } } else { if (pevent_parse_event(pevent, buf, size, system)) pevent->parsing_failures = 1; } free(buf); return 0; } static int make_preg_files(const char *regex, regex_t *system, regex_t *event, int *unique) { char *buf; char *sstr; char *estr; int ret; /* unique is set if a colon is found */ *unique = 0; /* split "system:event" into "system" and "event" */ buf = strdup(regex); if (!buf) die("malloc"); sstr = strtok(buf, ":"); estr = strtok(NULL, ":"); /* If no colon is found, set event == system */ if (!estr) estr = sstr; else *unique = 1; ret = regcomp(system, sstr, REG_ICASE|REG_NOSUB); if (ret) { warning("Bad regular expression '%s'", sstr); goto out; } ret = regcomp(event, estr, REG_ICASE|REG_NOSUB); if (ret) { warning("Bad regular expression '%s'", estr); goto out; } out: free(buf); return ret; } static int read_ftrace_files(struct tracecmd_input *handle, const char *regex) { unsigned long long size; regex_t spreg; regex_t epreg; regex_t *sreg = NULL; regex_t *ereg = NULL; int print_all = 0; int unique; int count; int ret; int i; if (regex) { sreg = &spreg; ereg = &epreg; ret = make_preg_files(regex, sreg, ereg, &unique); if (ret) return -1; if (regexec(sreg, "ftrace", 0, NULL, 0) == 0) { /* * If the system matches a regex that did * not contain a colon, then print all events. */ if (!unique) print_all = 1; } else if (unique) { /* * The user specified a unique event that did * not match the ftrace system. Don't print any * events here. */ regfree(sreg); regfree(ereg); sreg = NULL; ereg = NULL; } } count = read4(handle); if (count < 0) return -1; for (i = 0; i < count; i++) { size = read8(handle); if (size < 0) return -1; ret = read_ftrace_file(handle, size, print_all, ereg); if (ret < 0) return -1; } handle->event_files_start = lseek64(handle->fd, 0, SEEK_CUR); if (sreg) { regfree(sreg); regfree(ereg); } return 0; } static int read_event_files(struct tracecmd_input *handle, const char *regex) { unsigned long long size; char *system; regex_t spreg; regex_t epreg; regex_t *sreg = NULL; regex_t *ereg = NULL; regex_t *reg; int systems; int print_all; int sys_printed; int count; int unique; int ret; int i,x; if (regex) { sreg = &spreg; ereg = &epreg; ret = make_preg_files(regex, sreg, ereg, &unique); if (ret) return -1; } systems = read4(handle); if (systems < 0) return -1; for (i = 0; i < systems; i++) { system = read_string(handle); if (!system) return -1; sys_printed = 0; print_all = 0; reg = ereg; if (sreg) { if (regexec(sreg, system, 0, NULL, 0) == 0) { /* * If the user passed in a regex that * did not contain a colon, then we can * print all the events of this system. */ if (!unique) print_all = 1; } else if (unique) { /* * The user passed in a unique event that * specified a specific system and event. * Since this system doesn't match this * event, then we don't print any events * for this system. */ reg = NULL; } } count = read4(handle); if (count < 0) goto failed; for (x=0; x < count; x++) { size = read8(handle); if (size < 0) goto failed; ret = read_event_file(handle, system, size, print_all, &sys_printed, reg); if (ret < 0) goto failed; } free(system); } if (sreg) { regfree(sreg); regfree(ereg); } return 0; failed: if (sreg) { regfree(sreg); regfree(ereg); } free(system); return -1; } static int read_proc_kallsyms(struct tracecmd_input *handle) { struct pevent *pevent = handle->pevent; int size; char *buf; size = read4(handle); if (!size) return 0; /* OK? */ if (size < 0) return -1; buf = malloc(size+1); if (!buf) return -1; if (do_read_check(handle, buf, size)){ free(buf); return -1; } buf[size] = 0; parse_proc_kallsyms(pevent, buf, size); free(buf); return 0; } static int read_ftrace_printk(struct tracecmd_input *handle) { int size; char *buf; size = read4(handle); if (!size) return 0; /* OK? */ if (size < 0) return -1; buf = malloc(size + 1); if (!buf) return -1; if (do_read_check(handle, buf, size)) { free(buf); return -1; } buf[size] = 0; parse_ftrace_printk(handle->pevent, buf, size); free(buf); return 0; } static int read_and_parse_cmdlines(struct tracecmd_input *handle); /** * tracecmd_read_headers - read the header information from trace.dat * @handle: input handle for the trace.dat file * * This reads the trace.dat file for various information. Like the * format of the ring buffer, event formats, ftrace formats, kallsyms * and printk. */ int tracecmd_read_headers(struct tracecmd_input *handle) { int ret; ret = read_header_files(handle); if (ret < 0) return -1; ret = read_ftrace_files(handle, NULL); if (ret < 0) return -1; ret = read_event_files(handle, NULL); if (ret < 0) return -1; ret = read_proc_kallsyms(handle); if (ret < 0) return -1; ret = read_ftrace_printk(handle); if (ret < 0) return -1; if (read_and_parse_cmdlines(handle) < 0) return -1; pevent_set_long_size(handle->pevent, handle->long_size); return 0; } static unsigned long long calc_page_offset(struct tracecmd_input *handle, unsigned long long offset) { return offset & ~(handle->page_size - 1); } static int read_page(struct tracecmd_input *handle, off64_t offset, int cpu, void *map) { off64_t save_seek; off64_t ret; if (handle->use_pipe) { ret = read(handle->cpu_data[cpu].pipe_fd, map, handle->page_size); /* Set EAGAIN if the pipe is empty */ if (ret < 0) { errno = EAGAIN; return -1; } else if (ret == 0) { /* Set EINVAL when the pipe has closed */ errno = EINVAL; return -1; } return 0; } /* other parts of the code may expect the pointer to not move */ save_seek = lseek64(handle->fd, 0, SEEK_CUR); ret = lseek64(handle->fd, offset, SEEK_SET); if (ret < 0) return -1; ret = read(handle->fd, map, handle->page_size); if (ret < 0) return -1; /* reset the file pointer back */ lseek64(handle->fd, save_seek, SEEK_SET); return 0; } static struct page *allocate_page(struct tracecmd_input *handle, int cpu, off64_t offset) { struct cpu_data *cpu_data = &handle->cpu_data[cpu]; struct page *page; int ret; list_for_each_entry(page, &cpu_data->pages, list) { if (page->offset == offset) { page->ref_count++; return page; } } page = malloc(sizeof(*page)); if (!page) return NULL; memset(page, 0, sizeof(*page)); page->offset = offset; page->handle = handle; if (handle->read_page) { page->map = malloc(handle->page_size); if (page->map) { ret = read_page(handle, offset, cpu, page->map); if (ret < 0) { free(page->map); page->map = NULL; } } } else { page->map = mmap(NULL, handle->page_size, PROT_READ, MAP_PRIVATE, handle->fd, offset); if (page->map == MAP_FAILED) page->map = NULL; } if (!page->map) { free(page); return NULL; } list_add(&page->list, &cpu_data->pages); page->ref_count = 1; return page; } static void __free_page(struct tracecmd_input *handle, struct page *page) { if (!page->ref_count) die("Page ref count is zero!\n"); page->ref_count--; if (page->ref_count) return; if (handle->read_page) free(page->map); else munmap(page->map, handle->page_size); list_del(&page->list); free(page); } static void free_page(struct tracecmd_input *handle, int cpu) { if (!handle->cpu_data || cpu >= handle->cpus || !handle->cpu_data[cpu].page) return; __free_page(handle, handle->cpu_data[cpu].page); handle->cpu_data[cpu].page = NULL; } static void __free_record(struct pevent_record *record) { if (record->priv) { struct page *page = record->priv; remove_record(page, record); __free_page(page->handle, page); } free(record); } void free_record(struct pevent_record *record) { if (!record) return; if (!record->ref_count) die("record ref count is zero!"); record->ref_count--; if (record->ref_count) return; if (record->locked) die("freeing record when it is locked!"); record->data = NULL; __free_record(record); } void tracecmd_record_ref(struct pevent_record *record) { record->ref_count++; #if DEBUG_RECORD /* Update locating of last reference */ record->alloc_addr = (unsigned long)__builtin_return_address(0); #endif } static void free_next(struct tracecmd_input *handle, int cpu) { struct pevent_record *record; if (!handle->cpu_data || cpu >= handle->cpus) return; record = handle->cpu_data[cpu].next; if (!record) return; handle->cpu_data[cpu].next = NULL; record->locked = 0; free_record(record); } /* * Page is mapped, now read in the page header info. */ static int update_page_info(struct tracecmd_input *handle, int cpu) { struct pevent *pevent = handle->pevent; void *ptr = handle->cpu_data[cpu].page->map; struct kbuffer *kbuf = handle->cpu_data[cpu].kbuf; /* FIXME: handle header page */ if (pevent->header_page_ts_size != 8) { warning("expected a long long type for timestamp"); return -1; } kbuffer_load_subbuffer(kbuf, ptr); if (kbuffer_subbuffer_size(kbuf) > handle->page_size) die("bad page read, with size of %d", kbuffer_subbuffer_size(kbuf)); handle->cpu_data[cpu].timestamp = kbuffer_timestamp(kbuf) + handle->ts_offset; return 0; } /* * get_page maps a page for a given cpu. * * Returns 1 if the page was already mapped, * 0 if it mapped successfully * -1 on error */ static int get_page(struct tracecmd_input *handle, int cpu, off64_t offset) { /* Don't map if the page is already where we want */ if (handle->cpu_data[cpu].offset == offset && handle->cpu_data[cpu].page) return 1; /* Do not map no data for CPU */ if (!handle->cpu_data[cpu].size) return -1; if (offset & (handle->page_size - 1)) { errno = -EINVAL; die("bad page offset %llx", offset); return -1; } if (offset < handle->cpu_data[cpu].file_offset || offset > handle->cpu_data[cpu].file_offset + handle->cpu_data[cpu].file_size) { errno = -EINVAL; die("bad page offset %llx", offset); return -1; } handle->cpu_data[cpu].offset = offset; handle->cpu_data[cpu].size = (handle->cpu_data[cpu].file_offset + handle->cpu_data[cpu].file_size) - offset; free_page(handle, cpu); handle->cpu_data[cpu].page = allocate_page(handle, cpu, offset); if (!handle->cpu_data[cpu].page) return -1; if (update_page_info(handle, cpu)) return -1; return 0; } static int get_next_page(struct tracecmd_input *handle, int cpu) { off64_t offset; if (!handle->cpu_data[cpu].page && !handle->use_pipe) return 0; free_page(handle, cpu); if (handle->cpu_data[cpu].size <= handle->page_size) { handle->cpu_data[cpu].offset = 0; return 0; } offset = handle->cpu_data[cpu].offset + handle->page_size; return get_page(handle, cpu, offset); } static struct pevent_record * peek_event(struct tracecmd_input *handle, unsigned long long offset, int cpu) { struct pevent_record *record = NULL; /* * Since the timestamp is calculated from the beginning * of the page and through each event, we reset the * page to the beginning. This is just used by * tracecmd_read_at. */ update_page_info(handle, cpu); do { free_next(handle, cpu); record = tracecmd_peek_data(handle, cpu); if (record && (record->offset + record->record_size) > offset) break; } while (record); return record; } static struct pevent_record * read_event(struct tracecmd_input *handle, unsigned long long offset, int cpu) { struct pevent_record *record; record = peek_event(handle, offset, cpu); if (record) record = tracecmd_read_data(handle, cpu); return record; } static struct pevent_record * find_and_peek_event(struct tracecmd_input *handle, unsigned long long offset, int *pcpu) { unsigned long long page_offset; int cpu; /* find the cpu that this offset exists in */ for (cpu = 0; cpu < handle->cpus; cpu++) { if (offset >= handle->cpu_data[cpu].file_offset && offset < handle->cpu_data[cpu].file_offset + handle->cpu_data[cpu].file_size) break; } /* Not found? */ if (cpu == handle->cpus) return NULL; /* Move this cpu index to point to this offest */ page_offset = calc_page_offset(handle, offset); if (get_page(handle, cpu, page_offset) < 0) return NULL; if (pcpu) *pcpu = cpu; return peek_event(handle, offset, cpu); } static struct pevent_record * find_and_read_event(struct tracecmd_input *handle, unsigned long long offset, int *pcpu) { struct pevent_record *record; int cpu; record = find_and_peek_event(handle, offset, &cpu); if (record) { record = tracecmd_read_data(handle, cpu); if (pcpu) *pcpu = cpu; } return record; } /** * tracecmd_read_at - read a record from a specific offset * @handle: input handle for the trace.dat file * @offset: the offset into the file to find the record * @pcpu: pointer to a variable to store the CPU id the record was found in * * This function is useful when looking for a previous record. * You can store the offset of the record "record->offset" and use that * offset to retreive the record again without needing to store any * other information about the record. * * The record returned must be freed. */ struct pevent_record * tracecmd_read_at(struct tracecmd_input *handle, unsigned long long offset, int *pcpu) { unsigned long long page_offset; int cpu; page_offset = calc_page_offset(handle, offset); /* check to see if we have this page already */ for (cpu = 0; cpu < handle->cpus; cpu++) { if (handle->cpu_data[cpu].offset == page_offset && handle->cpu_data[cpu].file_size) break; } if (cpu < handle->cpus) { if (pcpu) *pcpu = cpu; return read_event(handle, offset, cpu); } else return find_and_read_event(handle, offset, pcpu); } /** * tracecmd_refresh_record - remaps the records data * @handle: input handle for the trace.dat file * @record: the record to be refreshed * * A record data points to a mmap section of memory. * by reading new records the mmap section may be unmapped. * This will refresh the record's data mapping. * * ===== OBSOLETED BY PAGE REFERENCES ===== * * Returns 1 if page is still mapped (does not modify CPU iterator) * 0 on successful mapping (was not mapped before, * This will update CPU iterator to point to * the next record) * -1 on error. */ int tracecmd_refresh_record(struct tracecmd_input *handle, struct pevent_record *record) { unsigned long long page_offset; int cpu = record->cpu; struct cpu_data *cpu_data = &handle->cpu_data[cpu]; int index; int ret; page_offset = calc_page_offset(handle, record->offset); index = record->offset & (handle->page_size - 1); ret = get_page(handle, record->cpu, page_offset); if (ret < 0) return -1; /* If the page is still mapped, there's nothing to do */ if (ret) return 1; record->data = kbuffer_read_at_offset(cpu_data->kbuf, index, &record->ts); cpu_data->timestamp = record->ts; return 0; } /** * tracecmd_read_cpu_first - get the first record in a CPU * @handle: input handle for the trace.dat file * @cpu: the CPU to search * * This returns the first (by time) record entry in a given CPU. * * The record returned must be freed. */ struct pevent_record * tracecmd_read_cpu_first(struct tracecmd_input *handle, int cpu) { int ret; ret = get_page(handle, cpu, handle->cpu_data[cpu].file_offset); if (ret < 0) return NULL; /* If the page was already mapped, we need to reset it */ if (ret) update_page_info(handle, cpu); free_next(handle, cpu); return tracecmd_read_data(handle, cpu); } /** * tracecmd_read_cpu_last - get the last record in a CPU * @handle: input handle for the trace.dat file * @cpu: the CPU to search * * This returns the last (by time) record entry in a given CPU. * * The record returned must be freed. */ struct pevent_record * tracecmd_read_cpu_last(struct tracecmd_input *handle, int cpu) { struct pevent_record *record = NULL; off64_t offset, page_offset; offset = handle->cpu_data[cpu].file_offset + handle->cpu_data[cpu].file_size; if (offset & (handle->page_size - 1)) offset &= ~(handle->page_size - 1); else offset -= handle->page_size; page_offset = offset; again: if (get_page(handle, cpu, page_offset) < 0) return NULL; offset = page_offset; do { free_record(record); record = tracecmd_read_data(handle, cpu); if (record) offset = record->offset; } while (record); record = tracecmd_read_at(handle, offset, NULL); /* * It is possible that a page has just a timestamp * or just padding on it. */ if (!record) { if (page_offset == handle->cpu_data[cpu].file_offset) return NULL; page_offset -= handle->page_size; goto again; } return record; } /** * tracecmd_set_cpu_to_timestamp - set the CPU iterator to a given time * @handle: input handle for the trace.dat file * @cpu: the CPU pointer to set * @ts: the timestamp to set the CPU at. * * This sets the CPU iterator used by tracecmd_read_data and * tracecmd_peek_data to a location in the CPU storage near * a given timestamp. It will try to set the iterator to a time before * the time stamp and not actually at a given time. * * To use this to find a record in a time field, call this function * first, than iterate with tracecmd_read_data to find the records * you need. */ int tracecmd_set_cpu_to_timestamp(struct tracecmd_input *handle, int cpu, unsigned long long ts) { struct cpu_data *cpu_data = &handle->cpu_data[cpu]; off64_t start, end, next; if (cpu < 0 || cpu >= handle->cpus) { errno = -EINVAL; return -1; } if (!cpu_data->size) return -1; if (!cpu_data->page) { if (init_cpu(handle, cpu)) return -1; } if (cpu_data->timestamp == ts) { /* * If a record is cached, then that record is most * likely the matching timestamp. Otherwise we need * to start from the beginning of the index; */ if (!cpu_data->next || cpu_data->next->ts != ts) update_page_info(handle, cpu); return 0; } /* Set to the first record on current page */ update_page_info(handle, cpu); if (cpu_data->timestamp < ts) { start = cpu_data->offset; end = cpu_data->file_offset + cpu_data->file_size; if (end & (handle->page_size - 1)) end &= ~(handle->page_size - 1); else end -= handle->page_size; next = end; } else { end = cpu_data->offset; start = cpu_data->file_offset; next = start; } while (start < end) { if (get_page(handle, cpu, next) < 0) return -1; if (cpu_data->timestamp == ts) break; if (cpu_data->timestamp < ts) start = next; else end = next; next = start + (end - start) / 2; next = calc_page_offset(handle, next); /* Prevent an infinite loop if start and end are a page off */ if (next == start) start = next += handle->page_size; } /* * We need to end up on a page before the time stamp. * We go back even if the timestamp is the same. This is because * we want the event with the timestamp, not the page. The page * can start with the timestamp we are looking for, but the event * may be on the previous page. */ if (cpu_data->timestamp >= ts && cpu_data->offset > cpu_data->file_offset) get_page(handle, cpu, cpu_data->offset - handle->page_size); return 0; } /** * tracecmd_set_all_cpus_to_timestamp - set all CPUs iterator to a given time * @handle: input handle for the trace.dat file * @cpu: the CPU pointer to set * @ts: the timestamp to set the CPU at. * * This sets the CPU iterator used by tracecmd_read_data and * tracecmd_peek_data to a location in the CPU storage near * a given timestamp. It will try to set the iterator to a time before * the time stamp and not actually at a given time. * * To use this to find a record in a time field, call this function * first, than iterate with tracecmd_read_next_data to find the records * you need. */ void tracecmd_set_all_cpus_to_timestamp(struct tracecmd_input *handle, unsigned long long time) { int cpu; for (cpu = 0; cpu < handle->cpus; cpu++) tracecmd_set_cpu_to_timestamp(handle, cpu, time); } /** * tracecmd_set_cursor - set the offset for the next tracecmd_read_data * @handle: input handle for the trace.dat file * @cpu: the CPU pointer to set * @offset: the offset to place the cursor * * Set the pointer to the next read or peek. This is useful when * needing to read sequentially and then look at another record * out of sequence without breaking the iteration. This is done with: * * record = tracecmd_peek_data() * offset = record->offset; * record = tracecmd_read_at(); * - do what ever with record - * tracecmd_set_cursor(handle, cpu, offset); * * Now the next tracecmd_peek_data or tracecmd_read_data will return * the original record. */ int tracecmd_set_cursor(struct tracecmd_input *handle, int cpu, unsigned long long offset) { struct cpu_data *cpu_data = &handle->cpu_data[cpu]; unsigned long long page_offset; if (cpu < 0 || cpu >= handle->cpus) return -1; if (offset < cpu_data->file_offset || offset > cpu_data->file_offset + cpu_data->file_size) return -1; /* cpu does not have this offset. */ /* Move this cpu index to point to this offest */ page_offset = calc_page_offset(handle, offset); if (get_page(handle, cpu, page_offset) < 0) return -1; peek_event(handle, offset, cpu); return 0; } /** * tracecmd_get_cursor - get the offset for the next tracecmd_read_data * @handle: input handle for the trace.dat file * @cpu: the CPU pointer to get the cursor from * * Returns the offset of the next record that would be read. */ unsigned long long tracecmd_get_cursor(struct tracecmd_input *handle, int cpu) { struct cpu_data *cpu_data = &handle->cpu_data[cpu]; struct kbuffer *kbuf = cpu_data->kbuf; if (cpu < 0 || cpu >= handle->cpus) return 0; /* * Use the next pointer if it exists and matches the * current timestamp. */ if (cpu_data->next && cpu_data->next->ts == cpu_data->timestamp) return cpu_data->next->offset; /* * Either the next point does not exist, or it does * not match the timestamp. The next read will use the * current page. * * If the offset is at the end, then return that. */ if (cpu_data->offset >= cpu_data->file_offset + cpu_data->file_size) return cpu_data->offset; return cpu_data->offset + kbuffer_curr_offset(kbuf); } /** * tracecmd_translate_data - create a record from raw data * @handle: input handle for the trace.dat file * @ptr: raw data to read * @size: the size of the data * * This function tries to create a record from some given * raw data. The data does not need to be from the trace.dat file. * It can be stored from another location. * * Note, since the timestamp is calculated from within the trace * buffer, the timestamp for the record will be zero, since it * can't calculate it. * * The record returned must be freed. */ struct pevent_record * tracecmd_translate_data(struct tracecmd_input *handle, void *ptr, int size) { struct pevent *pevent = handle->pevent; struct pevent_record *record; unsigned int length; int swap = 1; /* minimum record read is 8, (warn?) (TODO: make 8 into macro) */ if (size < 8) return NULL; record = malloc(sizeof(*record)); if (!record) return NULL; memset(record, 0, sizeof(*record)); record->ref_count = 1; if (pevent->host_bigendian == pevent->file_bigendian) swap = 0; record->data = kbuffer_translate_data(swap, ptr, &length); record->size = length; if (record->data) record->record_size = record->size + (record->data - ptr); return record; } /** * tracecmd_read_page_record - read a record off of a page * @pevent: pevent used to parse the page * @page: the page to read * @size: the size of the page * @last_record: last record read from this page. * * If a ring buffer page is available, and the need to parse it * without having a handle, then this function can be used. * * The @pevent needs to be initialized to have the page header information * already available. * * The @last_record is used to know where to read the next record from. * If @last_record is NULL, the first record on the page will be read. * * Returns: * A newly allocated record that must be freed with free_record() if * a record is found. Otherwise NULL is returned if the record is bad * or no more records exist. */ struct pevent_record * tracecmd_read_page_record(struct pevent *pevent, void *page, int size, struct pevent_record *last_record) { unsigned long long ts; struct kbuffer *kbuf; struct pevent_record *record = NULL; enum kbuffer_long_size long_size; enum kbuffer_endian endian; void *ptr; if (pevent->file_bigendian) endian = KBUFFER_ENDIAN_BIG; else endian = KBUFFER_ENDIAN_LITTLE; if (pevent->header_page_size_size == 8) long_size = KBUFFER_LSIZE_8; else long_size = KBUFFER_LSIZE_4; kbuf = kbuffer_alloc(long_size, endian); if (!kbuf) return NULL; kbuffer_load_subbuffer(kbuf, page); if (kbuffer_subbuffer_size(kbuf) > size) { warning("tracecmd_read_page_record: page_size > size"); goto out_free; } if (last_record) { if (last_record->data < page || last_record->data >= (page + size)) { warning("tracecmd_read_page_record: bad last record (size=%u)", last_record->size); goto out_free; } do { ptr = kbuffer_next_event(kbuf, NULL); if (!ptr) break; } while (ptr < last_record->data); if (ptr != last_record->data) { warning("tracecmd_read_page_record: could not find last_record"); goto out_free; } } ptr = kbuffer_read_event(kbuf, &ts); if (!ptr) goto out_free; record = malloc(sizeof(*record)); if (!record) return NULL; memset(record, 0, sizeof(*record)); record->ts = ts; record->size = kbuffer_event_size(kbuf); record->record_size = kbuffer_curr_size(kbuf); record->cpu = 0; record->data = ptr; record->ref_count = 1; out_free: kbuffer_free(kbuf); return record; } /** * tracecmd_peek_data - return the record at the current location. * @handle: input handle for the trace.dat file * @cpu: the CPU to pull from * * This returns the record at the current location of the CPU * iterator. It does not increment the CPU iterator. */ struct pevent_record * tracecmd_peek_data(struct tracecmd_input *handle, int cpu) { struct pevent_record *record; unsigned long long ts; struct kbuffer *kbuf; struct page *page; int index; void *data; if (cpu >= handle->cpus) return NULL; page = handle->cpu_data[cpu].page; kbuf = handle->cpu_data[cpu].kbuf; /* Hack to work around function graph read ahead */ tracecmd_curr_thread_handle = handle; if (handle->cpu_data[cpu].next) { record = handle->cpu_data[cpu].next; if (!record->data) die("Something freed the record"); if (handle->cpu_data[cpu].timestamp == record->ts) return record; /* * The timestamp changed, which means the cached * record is no longer valid. Reread a new record. */ free_next(handle, cpu); } read_again: if (!page) { if (handle->use_pipe) { get_next_page(handle, cpu); page = handle->cpu_data[cpu].page; } if (!page) return NULL; } data = kbuffer_read_event(kbuf, &ts); if (!data) { if (get_next_page(handle, cpu)) return NULL; page = handle->cpu_data[cpu].page; goto read_again; } handle->cpu_data[cpu].timestamp = ts + handle->ts_offset; index = kbuffer_curr_offset(kbuf); record = malloc(sizeof(*record)); if (!record) return NULL; memset(record, 0, sizeof(*record)); record->ts = handle->cpu_data[cpu].timestamp; record->size = kbuffer_event_size(kbuf); record->cpu = cpu; record->data = data; record->offset = handle->cpu_data[cpu].offset + index; record->missed_events = kbuffer_missed_events(kbuf); record->ref_count = 1; record->locked = 1; handle->cpu_data[cpu].next = record; record->record_size = kbuffer_curr_size(kbuf); record->priv = page; add_record(page, record); page->ref_count++; kbuffer_next_event(kbuf, NULL); return record; } /** * tracecmd_read_data - read the next record and increment * @handle: input handle for the trace.dat file * @cpu: the CPU to pull from * * This returns the record at the current location of the CPU * iterator and increments the CPU iterator. * * The record returned must be freed. */ struct pevent_record * tracecmd_read_data(struct tracecmd_input *handle, int cpu) { struct pevent_record *record; record = tracecmd_peek_data(handle, cpu); handle->cpu_data[cpu].next = NULL; if (record) { record->locked = 0; #if DEBUG_RECORD record->alloc_addr = (unsigned long)__builtin_return_address(0); #endif } return record; } /** * tracecmd_read_next_data - read the next record * @handle: input handle to the trace.dat file * @rec_cpu: return pointer to the CPU that the record belongs to * * This returns the next record by time. This is different than * tracecmd_read_data in that it looks at all CPUs. It does a peek * at each CPU and the record with the earliest time stame is * returned. If @rec_cpu is not NULL it gets the CPU id the record was * on. The CPU cursor of the returned record is moved to the * next record. * * Multiple reads of this function will return a serialized list * of all records for all CPUs in order of time stamp. * * The record returned must be freed. */ struct pevent_record * tracecmd_read_next_data(struct tracecmd_input *handle, int *rec_cpu) { unsigned long long ts; struct pevent_record *record; int first_record = 1; int next; int cpu; if (rec_cpu) *rec_cpu = -1; next = -1; ts = 0; for (cpu = 0; cpu < handle->cpus; cpu++) { record = tracecmd_peek_data(handle, cpu); if (record && (first_record || record->ts < ts)) { ts = record->ts; next = cpu; first_record = 0; } } if (next >= 0) { if (rec_cpu) *rec_cpu = next; return tracecmd_read_data(handle, next); } return NULL; } /** * tracecmd_read_prev - read the record before the given record * @handle: input handle to the trace.dat file * @record: the record to use to find the previous record. * * This returns the record before the @record on its CPU. If * @record is the first record, NULL is returned. The cursor is set * as if the previous record was read by tracecmd_read_data(). * * @record can not be NULL, otherwise NULL is returned; the * record ownership goes to this function. * * Note, this is not that fast of an algorithm, since it needs * to build the timestamp for the record. * * The record returned must be freed with free_record(). */ struct pevent_record * tracecmd_read_prev(struct tracecmd_input *handle, struct pevent_record *record) { unsigned long long offset, page_offset;; struct cpu_data *cpu_data; int index; int cpu; if (!record) return NULL; cpu = record->cpu; offset = record->offset; cpu_data = &handle->cpu_data[cpu]; page_offset = calc_page_offset(handle, offset); index = offset - page_offset; /* Note, the record passed in could have been a peek */ free_next(handle, cpu); /* Reset the cursor */ /* Should not happen */ if (get_page(handle, cpu, page_offset) < 0) return NULL; update_page_info(handle, cpu); /* Find the record before this record */ index = 0; for (;;) { record = tracecmd_read_data(handle, cpu); /* Should not happen! */ if (!record) return NULL; if (record->offset == offset) break; index = record->offset - page_offset; free_record(record); } free_record(record); if (index) /* we found our record */ return tracecmd_read_at(handle, page_offset + index, NULL); /* reset the index to start at the beginning of the page */ update_page_info(handle, cpu); /* The previous record is on the previous page */ for (;;) { /* check if this is the first page */ if (page_offset == cpu_data->file_offset) return NULL; page_offset -= handle->page_size; /* Updating page to a new page will reset index to 0 */ get_page(handle, cpu, page_offset); record = NULL; index = 0; do { if (record) { index = record->offset - page_offset; free_record(record); } record = tracecmd_read_data(handle, cpu); /* Should not happen */ if (!record) return NULL; } while (record->offset != offset); free_record(record); if (index) /* we found our record */ return tracecmd_read_at(handle, page_offset + index, NULL); } /* Not reached */ } static int init_cpu(struct tracecmd_input *handle, int cpu) { struct cpu_data *cpu_data = &handle->cpu_data[cpu]; int i; cpu_data->offset = cpu_data->file_offset; cpu_data->size = cpu_data->file_size; cpu_data->timestamp = 0; list_head_init(&cpu_data->pages); if (!cpu_data->size) { printf("CPU %d is empty\n", cpu); return 0; } if (handle->use_pipe) { /* Just make a page, it will be nuked later */ cpu_data->page = malloc(sizeof(*cpu_data->page)); if (!cpu_data->page) return -1; memset(cpu_data->page, 0, sizeof(*cpu_data->page)); list_add(&cpu_data->page->list, &cpu_data->pages); cpu_data->page->ref_count = 1; return 0; } cpu_data->page = allocate_page(handle, cpu, cpu_data->offset); if (!cpu_data->page && !handle->read_page) { perror("mmap"); fprintf(stderr, "Can not mmap file, will read instead\n"); if (cpu) { /* * If the other CPUs had size and was able to mmap * then bail. */ for (i = 0; i < cpu; i++) { if (handle->cpu_data[i].size) return -1; } } /* try again without mmapping, just read it directly */ handle->read_page = true; cpu_data->page = allocate_page(handle, cpu, cpu_data->offset); if (!cpu_data->page) /* Still no luck, bail! */ return -1; } if (update_page_info(handle, cpu)) return -1; return 0; } static int handle_options(struct tracecmd_input *handle) { unsigned long long offset; unsigned short option; unsigned int size; char *cpustats = NULL; unsigned int cpustats_size = 0; struct input_buffer_instance *buffer; struct hook_list *hook; char *buf; for (;;) { if (do_read_check(handle, &option, 2)) return -1; if (option == TRACECMD_OPTION_DONE) break; /* next 4 bytes is the size of the option */ if (do_read_check(handle, &size, 4)) return -1; size = __data2host4(handle->pevent, size); buf = malloc_or_die(size); if (do_read_check(handle, buf, size)) return -1; switch (option) { case TRACECMD_OPTION_DATE: /* * A time has been mapped that is the * difference between the timestamps and * gtod. It is stored as ASCII with '0x' * appended. */ if (handle->flags & TRACECMD_FL_IGNORE_DATE) break; offset = strtoll(buf, NULL, 0); /* Convert from micro to nano */ offset *= 1000; handle->ts_offset = offset; break; case TRACECMD_OPTION_CPUSTAT: buf[size-1] = '\n'; cpustats = realloc(cpustats, cpustats_size + size + 1); if (!cpustats) die("realloc"); memcpy(cpustats + cpustats_size, buf, size); cpustats_size += size; cpustats[cpustats_size] = 0; break; case TRACECMD_OPTION_BUFFER: /* A buffer instance is saved at the end of the file */ handle->nr_buffers++; handle->buffers = realloc(handle->buffers, sizeof(*handle->buffers) * handle->nr_buffers); if (!handle->buffers) die("realloc"); buffer = &handle->buffers[handle->nr_buffers - 1]; buffer->name = strdup(buf + 8); if (!buffer->name) die("strdup"); offset = *(unsigned long long *)buf; buffer->offset = __data2host8(handle->pevent, offset); break; case TRACECMD_OPTION_TRACECLOCK: handle->use_trace_clock = true; break; case TRACECMD_OPTION_UNAME: handle->uname = strdup(buf); break; case TRACECMD_OPTION_HOOK: hook = tracecmd_create_event_hook(buf); hook = handle->hooks; handle->hooks = hook; break; default: warning("unknown option %d", option); break; } free(buf); } handle->cpustats = cpustats; return 0; } static int read_cpu_data(struct tracecmd_input *handle) { struct pevent *pevent = handle->pevent; enum kbuffer_long_size long_size; enum kbuffer_endian endian; unsigned long long size; char buf[10]; int cpu; if (do_read_check(handle, buf, 10)) return -1; /* check if this handles options */ if (strncmp(buf, "options", 7) == 0) { if (handle_options(handle) < 0) return -1; if (do_read_check(handle, buf, 10)) return -1; } /* * Check if this is a latency report or not. */ if (strncmp(buf, "latency", 7) == 0) return 1; /* We expect this to be flyrecord */ if (strncmp(buf, "flyrecord", 9) != 0) return -1; handle->cpu_data = malloc(sizeof(*handle->cpu_data) * handle->cpus); if (!handle->cpu_data) return -1; memset(handle->cpu_data, 0, sizeof(*handle->cpu_data) * handle->cpus); if (force_read) handle->read_page = true; if (handle->long_size == 8) long_size = KBUFFER_LSIZE_8; else long_size = KBUFFER_LSIZE_4; if (handle->pevent->file_bigendian) endian = KBUFFER_ENDIAN_BIG; else endian = KBUFFER_ENDIAN_LITTLE; for (cpu = 0; cpu < handle->cpus; cpu++) { unsigned long long offset; handle->cpu_data[cpu].cpu = cpu; handle->cpu_data[cpu].kbuf = kbuffer_alloc(long_size, endian); if (!handle->cpu_data[cpu].kbuf) goto out_free; if (pevent->old_format) kbuffer_set_old_format(handle->cpu_data[cpu].kbuf); offset = read8(handle); size = read8(handle); handle->cpu_data[cpu].file_offset = offset; handle->cpu_data[cpu].file_size = size; if (size && (offset + size > handle->total_file_size)) { /* this happens if the file got truncated */ printf("File possibly truncated. " "Need at least %llu, but file size is %zu.\n", offset + size, handle->total_file_size); errno = EINVAL; goto out_free; } if (init_cpu(handle, cpu)) goto out_free; } return 0; out_free: for ( ; cpu >= 0; cpu--) { free_page(handle, cpu); kbuffer_free(handle->cpu_data[cpu].kbuf); handle->cpu_data[cpu].kbuf = NULL; } return -1; } static int read_data_and_size(struct tracecmd_input *handle, char **data, unsigned long long *size) { *size = read8(handle); if (*size < 0) return -1; *data = malloc(*size + 1); if (!*data) return -1; if (do_read_check(handle, *data, *size)) { free(*data); return -1; } return 0; } static int read_and_parse_cmdlines(struct tracecmd_input *handle) { struct pevent *pevent = handle->pevent; unsigned long long size; char *cmdlines; if (read_data_and_size(handle, &cmdlines, &size) < 0) return -1; cmdlines[size] = 0; parse_cmdlines(pevent, cmdlines, size); free(cmdlines); return 0; } static int read_and_parse_trace_clock(struct tracecmd_input *handle, struct pevent *pevent) { unsigned long long size; char *trace_clock; if (read_data_and_size(handle, &trace_clock, &size) < 0) return -1; trace_clock[size] = 0; parse_trace_clock(pevent, trace_clock, size); free(trace_clock); return 0; } /** * tracecmd_init_data - prepare reading the data from trace.dat * @handle: input handle for the trace.dat file * * This prepares reading the data from trace.dat. This is called * after tracecmd_read_headers() and before tracecmd_read_data(). */ int tracecmd_init_data(struct tracecmd_input *handle) { struct pevent *pevent = handle->pevent; int ret; handle->cpus = read4(handle); if (handle->cpus < 0) return -1; pevent_set_cpus(pevent, handle->cpus); ret = read_cpu_data(handle); if (ret < 0) return ret; if (handle->use_trace_clock) { /* * There was a bug in the original setting of * the trace_clock file which let it get * corrupted. If it fails to read, force local * clock. */ if (read_and_parse_trace_clock(handle, pevent) < 0) { char clock[] = "[local]"; warning("File has trace_clock bug, using local clock"); parse_trace_clock(pevent, clock, 8); } } tracecmd_blk_hack(handle); return ret; } /** * tracecmd_make_pipe - Have the handle read a pipe instead of a file * @handle: input handle to read from a pipe * @cpu: the cpu that the pipe represents * @fd: the read end of the pipe * @cpus: the total number of cpus for this handle * * In order to stream data from the binary trace files and produce * output or analyze the data, a tracecmd_input descriptor needs to * be created, and then converted into a form that can act on a * pipe. * * Note, there are limitations to what this descriptor can do. * Most notibly, it can not read backwards. Once a page is read * it can not be read at a later time (except if a record is attached * to it and is holding the page ref). * * It is expected that the handle has already been created and * tracecmd_read_headers() has run on it. */ int tracecmd_make_pipe(struct tracecmd_input *handle, int cpu, int fd, int cpus) { enum kbuffer_long_size long_size; enum kbuffer_endian endian; handle->read_page = true; handle->use_pipe = true; if (!handle->cpus) { handle->cpus = cpus; handle->cpu_data = malloc(sizeof(*handle->cpu_data) * handle->cpus); if (!handle->cpu_data) return -1; } if (cpu >= handle->cpus) return -1; if (handle->long_size == 8) long_size = KBUFFER_LSIZE_8; else long_size = KBUFFER_LSIZE_4; if (handle->pevent->file_bigendian) endian = KBUFFER_ENDIAN_BIG; else endian = KBUFFER_ENDIAN_LITTLE; memset(&handle->cpu_data[cpu], 0, sizeof(handle->cpu_data[cpu])); handle->cpu_data[cpu].pipe_fd = fd; handle->cpu_data[cpu].cpu = cpu; handle->cpu_data[cpu].kbuf = kbuffer_alloc(long_size, endian); if (!handle->cpu_data[cpu].kbuf) return -1; if (handle->pevent->old_format) kbuffer_set_old_format(handle->cpu_data[cpu].kbuf); handle->cpu_data[cpu].file_offset = 0; handle->cpu_data[cpu].file_size = -1; init_cpu(handle, cpu); return 0; } /** * tracecmd_print_events - print the events that are stored in trace.dat * @handle: input handle for the trace.dat file * @regex: regex of events to print (NULL is all events) * * This is a debugging routine to print out the events that * are stored in a given trace.dat file. */ void tracecmd_print_events(struct tracecmd_input *handle, const char *regex) { int ret; if (!regex) regex = ".*"; if (!handle->ftrace_files_start) { lseek64(handle->fd, handle->header_files_start, SEEK_SET); read_header_files(handle); } ret = read_ftrace_files(handle, regex); if (ret < 0) return; read_event_files(handle, regex); return; } /* Show the cpu data stats */ static void show_cpu_stats(struct tracecmd_input *handle) { struct cpu_data *cpu_data; int i; for (i = 0; i < handle->cpus; i++) { cpu_data = &handle->cpu_data[i]; printf("CPU%d data recorded at offset=0x%llx\n", i, cpu_data->file_offset); printf(" %lld bytes in size\n", cpu_data->file_size); } } /** * tracecmd_print_stats - prints the stats recorded in the options. * @handle: input handle for the trace.dat file * * Looks for the option TRACECMD_OPTION_CPUSTAT and prints out what's * stored there, if it is found. Otherwise it prints that none were found. */ void tracecmd_print_stats(struct tracecmd_input *handle) { if (handle->cpustats) printf("%s\n", handle->cpustats); else printf(" No stats in this file\n"); show_cpu_stats(handle); } /** * tracecmd_print_uname - prints the recorded uname if it was recorded * @handle: input handle for the trace.dat file * * Looks for the option TRACECMD_OPTION_UNAME and prints out what's * stored there, if it is found. Otherwise it prints that none were found. */ void tracecmd_print_uname(struct tracecmd_input *handle) { if (handle->uname) printf("%s\n", handle->uname); else printf(" uname was not recorded in this file\n"); } /** * tracecmd_hooks - return the event hooks that were used in record * @handle: input handle for the trace.dat file * * If trace-cmd record used -H to save hooks, they are parsed and * presented as hooks here. * * Returns the hook list (do not free it, they are freed on close) */ struct hook_list *tracecmd_hooks(struct tracecmd_input *handle) { return handle->hooks; } /** * tracecmd_alloc_fd - create a tracecmd_input handle from a file descriptor * @fd: the file descriptor for the trace.dat file * * Allocate a tracecmd_input handle from a file descriptor and open the * file. This tests if the file is of trace-cmd format and allocates * a parse event descriptor. * * The returned pointer is not ready to be read yet. A tracecmd_read_headers() * and tracecmd_init_data() still need to be called on the descriptor. * * Unless you know what you are doing with this, you want to use * tracecmd_open_fd() instead. */ struct tracecmd_input *tracecmd_alloc_fd(int fd) { struct tracecmd_input *handle; char test[] = { 23, 8, 68 }; char *version; char buf[BUFSIZ]; handle = malloc(sizeof(*handle)); if (!handle) return NULL; memset(handle, 0, sizeof(*handle)); handle->fd = fd; handle->ref = 1; if (do_read_check(handle, buf, 3)) goto failed_read; if (memcmp(buf, test, 3) != 0) goto failed_read; if (do_read_check(handle, buf, 7)) goto failed_read; if (memcmp(buf, "tracing", 7) != 0) goto failed_read; version = read_string(handle); if (!version) goto failed_read; printf("version = %s\n", version); free(version); if (do_read_check(handle, buf, 1)) goto failed_read; handle->pevent = pevent_alloc(); if (!handle->pevent) goto failed_read; /* register default ftrace functions first */ tracecmd_ftrace_overrides(handle, &handle->finfo); handle->plugin_list = tracecmd_load_plugins(handle->pevent); handle->pevent->file_bigendian = buf[0]; handle->pevent->host_bigendian = tracecmd_host_bigendian(); do_read_check(handle, buf, 1); handle->long_size = buf[0]; handle->page_size = read4(handle); handle->header_files_start = lseek64(handle->fd, 0, SEEK_CUR); handle->total_file_size = lseek64(handle->fd, 0, SEEK_END); handle->header_files_start = lseek64(handle->fd, handle->header_files_start, SEEK_SET); return handle; failed_read: free(handle); return NULL; } /** * tracecmd_alloc_fd - create a tracecmd_input handle from a file name * @file: the file name of the file that is of tracecmd data type. * * Allocate a tracecmd_input handle from a given file name and open the * file. This tests if the file is of trace-cmd format and allocates * a parse event descriptor. * * The returned pointer is not ready to be read yet. A tracecmd_read_headers() * and tracecmd_init_data() still need to be called on the descriptor. * * Unless you know what you are doing with this, you want to use * tracecmd_open() instead. */ struct tracecmd_input *tracecmd_alloc(const char *file) { int fd; fd = open(file, O_RDONLY); if (fd < 0) return NULL; return tracecmd_alloc_fd(fd); } /** * tracecmd_open_fd - create a tracecmd_handle from the trace.dat file descriptor * @fd: the file descriptor for the trace.dat file */ struct tracecmd_input *tracecmd_open_fd(int fd) { struct tracecmd_input *handle; handle = tracecmd_alloc_fd(fd); if (!handle) return NULL; if (tracecmd_read_headers(handle) < 0) goto fail; if (tracecmd_init_data(handle) < 0) goto fail; return handle; fail: tracecmd_close(handle); return NULL; } /** * tracecmd_open - create a tracecmd_handle from a given file * @file: the file name of the file that is of tracecmd data type. */ struct tracecmd_input *tracecmd_open(const char *file) { int fd; fd = open(file, O_RDONLY); if (fd < 0) return NULL; return tracecmd_open_fd(fd); } /** * tracecmd_ref - add a reference to the handle * @handle: input handle for the trace.dat file * * Some applications may share a handle between parts of * the application. Let those parts add reference counters * to the handle, and the last one to close it will free it. */ void tracecmd_ref(struct tracecmd_input *handle) { if (!handle) return; handle->ref++; } /** * tracecmd_close - close and free the trace.dat handle * @handle: input handle for the trace.dat file * * Close the file descriptor of the handle and frees * the resources allocated by the handle. */ void tracecmd_close(struct tracecmd_input *handle) { int cpu; if (!handle) return; if (handle->ref <= 0) { warning("tracecmd: bad ref count on handle\n"); return; } if (--handle->ref) return; for (cpu = 0; cpu < handle->cpus; cpu++) { /* The tracecmd_peek_data may have cached a record */ free_next(handle, cpu); free_page(handle, cpu); if (handle->cpu_data && handle->cpu_data[cpu].kbuf) { kbuffer_free(handle->cpu_data[cpu].kbuf); if (!list_empty(&handle->cpu_data[cpu].pages)) warning("pages still allocated on cpu %d%s", cpu, show_records(&handle->cpu_data[cpu].pages)); } } free(handle->cpustats); free(handle->cpu_data); free(handle->uname); close(handle->fd); tracecmd_free_hooks(handle->hooks); handle->hooks = NULL; if (handle->flags & TRACECMD_FL_BUFFER_INSTANCE) tracecmd_close(handle->parent); else { /* Only main handle frees plugins and pevent */ tracecmd_unload_plugins(handle->plugin_list, handle->pevent); pevent_free(handle->pevent); } free(handle); } static long long read_copy_size8(struct tracecmd_input *handle, int fd) { long long size; /* read size */ if (do_read_check(handle, &size, 8)) return -1; if (__do_write_check(fd, &size, 8)) return -1; size = __data2host8(handle->pevent, size); return size; } static int read_copy_size4(struct tracecmd_input *handle, int fd) { int size; /* read size */ if (do_read_check(handle, &size, 4)) return -1; if (__do_write_check(fd, &size, 4)) return -1; size = __data2host4(handle->pevent, size); return size; } static int read_copy_data(struct tracecmd_input *handle, unsigned long long size, int fd) { char *buf; buf = malloc(size); if (!buf) return -1; if (do_read_check(handle, buf, size)) goto failed_read; if (__do_write_check(fd, buf, size)) goto failed_read; free(buf); return 0; failed_read: free(buf); return -1; } static int copy_header_files(struct tracecmd_input *handle, int fd) { long long size; lseek64(handle->fd, handle->header_files_start, SEEK_SET); /* "header_page" */ if (read_copy_data(handle, 12, fd) < 0) return -1; size = read_copy_size8(handle, fd); if (size < 0) return -1; if (read_copy_data(handle, size, fd) < 0) return -1; /* "header_event" */ if (read_copy_data(handle, 13, fd) < 0) return -1; size = read_copy_size8(handle, fd); if (size < 0) return -1; if (read_copy_data(handle, size, fd) < 0) return -1; return 0; } static int copy_ftrace_files(struct tracecmd_input *handle, int fd) { unsigned long long size; int count; int i; count = read_copy_size4(handle, fd); if (count < 0) return -1; for (i = 0; i < count; i++) { size = read_copy_size8(handle, fd); if (size < 0) return -1; if (read_copy_data(handle, size, fd) < 0) return -1; } return 0; } static int copy_event_files(struct tracecmd_input *handle, int fd) { unsigned long long size; char *system; int systems; int count; int ret; int i,x; systems = read_copy_size4(handle, fd); if (systems < 0) return -1; for (i = 0; i < systems; i++) { system = read_string(handle); if (!system) return -1; if (__do_write_check(fd, system, strlen(system) + 1)) { free(system); return -1; } free(system); count = read_copy_size4(handle, fd); if (count < 0) return -1; for (x=0; x < count; x++) { size = read_copy_size8(handle, fd); if (size < 0) return -1; ret = read_copy_data(handle, size, fd); if (ret < 0) return -1; } } return 0; } static int copy_proc_kallsyms(struct tracecmd_input *handle, int fd) { int size; size = read_copy_size4(handle, fd); if (!size) return 0; /* OK? */ if (size < 0) return -1; if (read_copy_data(handle, size, fd) < 0) return -1; return 0; } static int copy_ftrace_printk(struct tracecmd_input *handle, int fd) { int size; size = read_copy_size4(handle, fd); if (!size) return 0; /* OK? */ if (size < 0) return -1; if (read_copy_data(handle, size, fd) < 0) return -1; return 0; } static int copy_command_lines(struct tracecmd_input *handle, int fd) { unsigned long size; size = read_copy_size8(handle, fd); if (!size) return 0; /* OK? */ if (size < 0) return -1; if (read_copy_data(handle, size, fd) < 0) return -1; return 0; } int tracecmd_copy_headers(struct tracecmd_input *handle, int fd) { int ret; ret = copy_header_files(handle, fd); if (ret < 0) return -1; ret = copy_ftrace_files(handle, fd); if (ret < 0) return -1; ret = copy_event_files(handle, fd); if (ret < 0) return -1; ret = copy_proc_kallsyms(handle, fd); if (ret < 0) return -1; ret = copy_ftrace_printk(handle, fd); if (ret < 0) return -1; ret = copy_command_lines(handle, fd); if (ret < 0) return -1; return 0; } /** * tracecmd_record_at_buffer_start - return true if record is first on subbuffer * @handle: input handle for the trace.dat file * @record: The record to test if it is the first record on page * * Returns true if the record is the first record on the page. */ int tracecmd_record_at_buffer_start(struct tracecmd_input *handle, struct pevent_record *record) { struct page *page = record->priv; struct kbuffer *kbuf = handle->cpu_data[record->cpu].kbuf; int offset; if (!page || !kbuf) return 0; offset = record->offset - page->offset; return offset == kbuffer_start_of_data(kbuf); } int tracecmd_buffer_instances(struct tracecmd_input *handle) { return handle->nr_buffers; } const char *tracecmd_buffer_instance_name(struct tracecmd_input *handle, int indx) { if (indx >= handle->nr_buffers) return NULL; return handle->buffers[indx].name; } struct tracecmd_input * tracecmd_buffer_instance_handle(struct tracecmd_input *handle, int indx) { struct tracecmd_input *new_handle; struct input_buffer_instance *buffer = &handle->buffers[indx]; size_t offset; ssize_t ret; if (indx >= handle->nr_buffers) return NULL; /* * We make a copy of the current handle, but we substitute * the cpu data with the cpu data for this buffer. */ new_handle = malloc(sizeof(*handle)); if (!new_handle) return NULL; *new_handle = *handle; new_handle->cpu_data = NULL; new_handle->nr_buffers = 0; new_handle->buffers = NULL; new_handle->ref = 1; new_handle->parent = handle; new_handle->cpustats = NULL; new_handle->hooks = NULL; if (handle->uname) /* Ignore if fails to malloc, no biggy */ new_handle->uname = strdup(handle->uname); tracecmd_ref(handle); new_handle->fd = dup(handle->fd); new_handle->flags |= TRACECMD_FL_BUFFER_INSTANCE; /* Save where we currently are */ offset = lseek64(handle->fd, 0, SEEK_CUR); ret = lseek64(handle->fd, buffer->offset, SEEK_SET); if (ret < 0) { warning("could not seek to buffer %s offset %ld\n", buffer->name, buffer->offset); tracecmd_close(new_handle); return NULL; } ret = read_cpu_data(new_handle); if (ret < 0) { warning("failed to read sub buffer %s\n", buffer->name); tracecmd_close(new_handle); return NULL; } ret = lseek64(handle->fd, offset, SEEK_SET); if (ret < 0) { warning("could not seek to back to offset %ld\n", offset); tracecmd_close(new_handle); return NULL; } return new_handle; } int tracecmd_is_buffer_instance(struct tracecmd_input *handle) { return handle->flags & TRACECMD_FL_BUFFER_INSTANCE; } /** * tracecmd_long_size - return the size of "long" for the arch * @handle: input handle for the trace.dat file */ int tracecmd_long_size(struct tracecmd_input *handle) { return handle->long_size; } /** * tracecmd_page_size - return the PAGE_SIZE for the arch * @handle: input handle for the trace.dat file */ int tracecmd_page_size(struct tracecmd_input *handle) { return handle->page_size; } /** * tracecmd_page_size - return the number of CPUs recorded * @handle: input handle for the trace.dat file */ int tracecmd_cpus(struct tracecmd_input *handle) { return handle->cpus; } /** * tracecmd_get_pevent - return the pevent handle * @handle: input handle for the trace.dat file */ struct pevent *tracecmd_get_pevent(struct tracecmd_input *handle) { return handle->pevent; } /** * tracecmd_get_use_trace_clock - return use_trace_clock * @handle: input handle for the trace.dat file */ bool tracecmd_get_use_trace_clock(struct tracecmd_input *handle) { return handle->use_trace_clock; } trace-cmd-2.5.3/trace-listen.c000066400000000000000000000371541246701203100161240ustar00rootroot00000000000000/* * Copyright (C) 2009, 2010 Red Hat Inc, Steven Rostedt * * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; version 2 of the License (not later!) * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; if not, see * * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ */ #define _LARGEFILE64_SOURCE #include #include #include #include #include #include #include #include #include #include #include #include #include #include "trace-local.h" #define MAX_OPTION_SIZE 4096 static char *default_output_dir = "."; static char *output_dir; static char *default_output_file = "trace"; static char *output_file; static FILE *logfp; static int debug; static int use_tcp; static int backlog = 5; #define TEMP_FILE_STR "%s.%s:%s.cpu%d", output_file, host, port, cpu static char *get_temp_file(const char *host, const char *port, int cpu) { char *file = NULL; int size; size = snprintf(file, 0, TEMP_FILE_STR); file = malloc_or_die(size + 1); sprintf(file, TEMP_FILE_STR); return file; } static void put_temp_file(char *file) { free(file); } #define MAX_PATH 1024 static void signal_setup(int sig, sighandler_t handle) { struct sigaction action; sigaction(sig, NULL, &action); /* Make accept return EINTR */ action.sa_flags &= ~SA_RESTART; action.sa_handler = handle; sigaction(sig, &action, NULL); } static void delete_temp_file(const char *host, const char *port, int cpu) { char file[MAX_PATH]; snprintf(file, MAX_PATH, TEMP_FILE_STR); unlink(file); } static int read_string(int fd, char *buf, size_t size) { size_t i; int n; for (i = 0; i < size; i++) { n = read(fd, buf+i, 1); if (!buf[i] || n <= 0) break; } return i; } static int process_option(char *option) { /* currently the only option we have is to us TCP */ if (strcmp(option, "TCP") == 0) { use_tcp = 1; return 1; } return 0; } static int done; static void finish(int sig) { done = 1; } #define LOG_BUF_SIZE 1024 static void __plog(const char *prefix, const char *fmt, va_list ap, FILE *fp) { static int newline = 1; char buf[LOG_BUF_SIZE]; int r; r = vsnprintf(buf, LOG_BUF_SIZE, fmt, ap); if (r > LOG_BUF_SIZE) r = LOG_BUF_SIZE; if (logfp) { if (newline) fprintf(logfp, "[%d]%s%.*s", getpid(), prefix, r, buf); else fprintf(logfp, "[%d]%s%.*s", getpid(), prefix, r, buf); newline = buf[r - 1] == '\n'; fflush(logfp); return; } fprintf(fp, "%.*s", r, buf); } static void plog(const char *fmt, ...) { va_list ap; va_start(ap, fmt); __plog("", fmt, ap, stdout); va_end(ap); } static void pdie(const char *fmt, ...) { va_list ap; char *str = ""; va_start(ap, fmt); __plog("Error: ", fmt, ap, stderr); va_end(ap); if (errno) str = strerror(errno); if (logfp) fprintf(logfp, "\n%s\n", str); else fprintf(stderr, "\n%s\n", str); exit(-1); } static void process_udp_child(int sfd, const char *host, const char *port, int cpu, int page_size) { struct sockaddr_storage peer_addr; socklen_t peer_addr_len; char buf[page_size]; char *tempfile; int cfd; int fd; int n; int once = 0; signal_setup(SIGUSR1, finish); tempfile = get_temp_file(host, port, cpu); fd = open(tempfile, O_WRONLY | O_TRUNC | O_CREAT, 0644); if (fd < 0) pdie("creating %s", tempfile); if (use_tcp) { if (listen(sfd, backlog) < 0) pdie("listen"); peer_addr_len = sizeof(peer_addr); cfd = accept(sfd, (struct sockaddr *)&peer_addr, &peer_addr_len); if (cfd < 0 && errno == EINTR) goto done; if (cfd < 0) pdie("accept"); close(sfd); sfd = cfd; } do { /* TODO, make this copyless! */ n = read(sfd, buf, page_size); if (n < 0) { if (errno == EINTR) continue; pdie("reading client"); } if (!n) break; /* UDP requires that we get the full size in one go */ if (!use_tcp && n < page_size && !once) { once = 1; warning("read %d bytes, expected %d", n, page_size); } write(fd, buf, n); } while (!done); done: put_temp_file(tempfile); exit(0); } #define START_PORT_SEARCH 1500 #define MAX_PORT_SEARCH 6000 static int udp_bind_a_port(int start_port, int *sfd) { struct addrinfo hints; struct addrinfo *result, *rp; char buf[BUFSIZ]; int s; int num_port = start_port; again: snprintf(buf, BUFSIZ, "%d", num_port); memset(&hints, 0, sizeof(hints)); hints.ai_family = AF_UNSPEC; hints.ai_socktype = use_tcp ? SOCK_STREAM : SOCK_DGRAM; hints.ai_flags = AI_PASSIVE; s = getaddrinfo(NULL, buf, &hints, &result); if (s != 0) pdie("getaddrinfo: error opening udp socket"); for (rp = result; rp != NULL; rp = rp->ai_next) { *sfd = socket(rp->ai_family, rp->ai_socktype, rp->ai_protocol); if (*sfd < 0) continue; if (bind(*sfd, rp->ai_addr, rp->ai_addrlen) == 0) break; close(*sfd); } if (rp == NULL) { freeaddrinfo(result); if (++num_port > MAX_PORT_SEARCH) pdie("No available ports to bind"); goto again; } freeaddrinfo(result); return num_port; } static void fork_udp_reader(int sfd, const char *node, const char *port, int *pid, int cpu, int pagesize) { *pid = fork(); if (*pid < 0) pdie("creating udp reader"); if (!*pid) process_udp_child(sfd, node, port, cpu, pagesize); close(sfd); } static int open_udp(const char *node, const char *port, int *pid, int cpu, int pagesize, int start_port) { int sfd; int num_port; /* * udp_bind_a_port() currently does not return an error, but if that * changes in the future, we have a check for it now. */ num_port = udp_bind_a_port(start_port, &sfd); if (num_port < 0) return num_port; fork_udp_reader(sfd, node, port, pid, cpu, pagesize); return num_port; } static int communicate_with_client(int fd, int *cpus, int *pagesize) { char buf[BUFSIZ]; char *option; int options; int size; int n, s, t, i; /* Let the client know what we are */ write(fd, "tracecmd", 8); /* read back the CPU count */ n = read_string(fd, buf, BUFSIZ); if (n == BUFSIZ) /** ERROR **/ return -1; *cpus = atoi(buf); plog("cpus=%d\n", *cpus); if (*cpus < 0) return -1; /* next read the page size */ n = read_string(fd, buf, BUFSIZ); if (n == BUFSIZ) /** ERROR **/ return -1; *pagesize = atoi(buf); plog("pagesize=%d\n", *pagesize); if (*pagesize <= 0) return -1; /* Now the number of options */ n = read_string(fd, buf, BUFSIZ); if (n == BUFSIZ) /** ERROR **/ return -1; options = atoi(buf); for (i = 0; i < options; i++) { /* next is the size of the options */ n = read_string(fd, buf, BUFSIZ); if (n == BUFSIZ) /** ERROR **/ return -1; size = atoi(buf); /* prevent a client from killing us */ if (size > MAX_OPTION_SIZE) return -1; option = malloc_or_die(size); do { t = size; s = 0; s = read(fd, option+s, t); if (s <= 0) return -1; t -= s; s = size - t; } while (t); s = process_option(option); free(option); /* do we understand this option? */ if (!s) return -1; } if (use_tcp) plog("Using TCP for live connection\n"); return 0; } static int create_client_file(const char *node, const char *port) { char buf[BUFSIZ]; int ofd; snprintf(buf, BUFSIZ, "%s.%s:%s.dat", output_file, node, port); ofd = open(buf, O_RDWR | O_CREAT | O_TRUNC, 0644); if (ofd < 0) pdie("Can not create file %s", buf); return ofd; } static void destroy_all_readers(int cpus, int *pid_array, const char *node, const char *port) { int cpu; for (cpu = 0; cpu < cpus; cpu++) { if (pid_array[cpu] > 0) { kill(pid_array[cpu], SIGKILL); waitpid(pid_array[cpu], NULL, 0); delete_temp_file(node, port, cpu); pid_array[cpu] = 0; } } } static int *create_all_readers(int cpus, const char *node, const char *port, int pagesize, int fd) { char buf[BUFSIZ]; int *port_array; int *pid_array; int start_port; int udp_port; int cpu; int pid; port_array = malloc_or_die(sizeof(int) * cpus); pid_array = malloc_or_die(sizeof(int) * cpus); memset(pid_array, 0, sizeof(int) * cpus); start_port = START_PORT_SEARCH; /* Now create a UDP port for each CPU */ for (cpu = 0; cpu < cpus; cpu++) { udp_port = open_udp(node, port, &pid, cpu, pagesize, start_port); if (udp_port < 0) goto out_free; port_array[cpu] = udp_port; pid_array[cpu] = pid; /* * Due to some bugging finding ports, * force search after last port */ start_port = udp_port + 1; } /* send the client a comma deliminated set of port numbers */ for (cpu = 0; cpu < cpus; cpu++) { snprintf(buf, BUFSIZ, "%s%d", cpu ? "," : "", port_array[cpu]); write(fd, buf, strlen(buf)); } /* end with null terminator */ write(fd, "\0", 1); return pid_array; out_free: destroy_all_readers(cpus, pid_array, node, port); return NULL; } static void collect_metadata_from_client(int ifd, int ofd) { char buf[BUFSIZ]; int n, s, t; do { n = read(ifd, buf, BUFSIZ); if (n < 0) { if (errno == EINTR) continue; pdie("reading client"); } t = n; s = 0; do { s = write(ofd, buf+s, t); if (s < 0) { if (errno == EINTR) break; pdie("writing to file"); } t -= s; s = n - t; } while (t); } while (n > 0 && !done); } static void stop_all_readers(int cpus, int *pid_array) { int cpu; for (cpu = 0; cpu < cpus; cpu++) { if (pid_array[cpu] > 0) kill(pid_array[cpu], SIGUSR1); } } static void put_together_file(int cpus, int ofd, const char *node, const char *port) { char **temp_files; int cpu; /* Now put together the file */ temp_files = malloc_or_die(sizeof(*temp_files) * cpus); for (cpu = 0; cpu < cpus; cpu++) temp_files[cpu] = get_temp_file(node, port, cpu); tracecmd_attach_cpu_data_fd(ofd, cpus, temp_files); free(temp_files); } static void process_client(const char *node, const char *port, int fd) { int *pid_array; int pagesize; int cpus; int ofd; if (communicate_with_client(fd, &cpus, &pagesize) < 0) return; ofd = create_client_file(node, port); pid_array = create_all_readers(cpus, node, port, pagesize, fd); if (!pid_array) return; /* Now we are ready to start reading data from the client */ collect_metadata_from_client(fd, ofd); /* wait a little to let our readers finish reading */ sleep(1); /* stop our readers */ stop_all_readers(cpus, pid_array); /* wait a little to have the readers clean up */ sleep(1); put_together_file(cpus, ofd, node, port); destroy_all_readers(cpus, pid_array, node, port); } static int do_fork(int cfd) { pid_t pid; /* in debug mode, we do not fork off children */ if (debug) return 0; pid = fork(); if (pid < 0) { warning("failed to create child"); return -1; } if (pid > 0) { close(cfd); return pid; } signal_setup(SIGINT, finish); return 0; } static int do_connection(int cfd, struct sockaddr_storage *peer_addr, socklen_t peer_addr_len) { char host[NI_MAXHOST], service[NI_MAXSERV]; int s; int ret; ret = do_fork(cfd); if (ret) return ret; s = getnameinfo((struct sockaddr *)peer_addr, peer_addr_len, host, NI_MAXHOST, service, NI_MAXSERV, NI_NUMERICSERV); if (s == 0) plog("Connected with %s:%s\n", host, service); else { plog("Error with getnameinfo: %s\n", gai_strerror(s)); close(cfd); return -1; } process_client(host, service, cfd); close(cfd); if (!debug) exit(0); return 0; } static int *client_pids; static int saved_pids; static int size_pids; #define PIDS_BLOCK 32 static void add_process(int pid) { if (!client_pids) { size_pids = PIDS_BLOCK; client_pids = malloc_or_die(sizeof(*client_pids) * size_pids); } else if (!(saved_pids % PIDS_BLOCK)) { size_pids += PIDS_BLOCK; client_pids = realloc(client_pids, sizeof(*client_pids) * size_pids); if (!client_pids) pdie("realloc of pids"); } client_pids[saved_pids++] = pid; } static void remove_process(int pid) { int i; for (i = 0; i < saved_pids; i++) { if (client_pids[i] == pid) break; } if (i == saved_pids) return; saved_pids--; if (saved_pids == i) return; memmove(&client_pids[i], &client_pids[i+1], sizeof(*client_pids) * (saved_pids - i)); } static void kill_clients(void) { int status; int i; for (i = 0; i < saved_pids; i++) { kill(client_pids[i], SIGINT); waitpid(client_pids[i], &status, 0); } saved_pids = 0; } static void clean_up(int sig) { int status; int ret; /* Clean up any children that has started before */ do { ret = waitpid(0, &status, WNOHANG); if (ret > 0) remove_process(ret); } while (ret > 0); } static void do_accept_loop(int sfd) { struct sockaddr_storage peer_addr; socklen_t peer_addr_len; int cfd, pid; peer_addr_len = sizeof(peer_addr); do { cfd = accept(sfd, (struct sockaddr *)&peer_addr, &peer_addr_len); printf("connected!\n"); if (cfd < 0 && errno == EINTR) continue; if (cfd < 0) pdie("connecting"); pid = do_connection(cfd, &peer_addr, peer_addr_len); if (pid > 0) add_process(pid); } while (!done); } static void do_listen(char *port) { struct addrinfo hints; struct addrinfo *result, *rp; int sfd, s; if (!debug) signal_setup(SIGCHLD, clean_up); memset(&hints, 0, sizeof(hints)); hints.ai_family = AF_UNSPEC; hints.ai_socktype = SOCK_STREAM; hints.ai_flags = AI_PASSIVE; s = getaddrinfo(NULL, port, &hints, &result); if (s != 0) pdie("getaddrinfo: error opening %s", port); for (rp = result; rp != NULL; rp = rp->ai_next) { sfd = socket(rp->ai_family, rp->ai_socktype, rp->ai_protocol); if (sfd < 0) continue; if (bind(sfd, rp->ai_addr, rp->ai_addrlen) == 0) break; close(sfd); } if (rp == NULL) pdie("Could not bind"); freeaddrinfo(result); if (listen(sfd, backlog) < 0) pdie("listen"); do_accept_loop(sfd); kill_clients(); } static void start_daemon(void) { if (daemon(1, 0) < 0) die("starting daemon"); } enum { OPT_debug = 255, }; void trace_listen(int argc, char **argv) { char *logfile = NULL; char *port = NULL; int daemon = 0; int c; if (argc < 2) usage(argv); if (strcmp(argv[1], "listen") != 0) usage(argv); for (;;) { int option_index = 0; static struct option long_options[] = { {"port", required_argument, NULL, 'p'}, {"help", no_argument, NULL, '?'}, {"debug", no_argument, NULL, OPT_debug}, {NULL, 0, NULL, 0} }; c = getopt_long (argc-1, argv+1, "+hp:o:d:l:D", long_options, &option_index); if (c == -1) break; switch (c) { case 'h': usage(argv); break; case 'p': port = optarg; break; case 'd': output_dir = optarg; break; case 'o': output_file = optarg; break; case 'l': logfile = optarg; break; case 'D': daemon = 1; break; case OPT_debug: debug = 1; break; default: usage(argv); } } if (!port) usage(argv); if ((argc - optind) >= 2) usage(argv); if (!output_file) output_file = default_output_file; if (!output_dir) output_dir = default_output_dir; if (logfile) { /* set the writes to a logfile instead */ logfp = fopen(logfile, "w"); if (!logfp) die("creating log file %s", logfile); } if (chdir(output_dir) < 0) die("Can't access directory %s", output_dir); if (daemon) start_daemon(); signal_setup(SIGINT, finish); signal_setup(SIGTERM, finish); do_listen(port); return; } trace-cmd-2.5.3/trace-local.h000066400000000000000000000111311246701203100157100ustar00rootroot00000000000000/* * Copyright (C) 2009, 2010 Red Hat Inc, Steven Rostedt * * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; version 2 of the License (not later!) * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; if not, see * * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ */ #ifndef __TRACE_LOCAL_H #define __TRACE_LOCAL_H #include #include /* for DIR */ #include "trace-cmd.h" /* fix stupid glib guint64 typecasts and printf formats */ typedef unsigned long long u64; struct buffer_instance; /* for local shared information with trace-cmd executable */ void usage(char **argv); extern int silence_warnings; extern int show_status; struct pid_record_data { int pid; int brass[2]; int cpu; int closed; struct tracecmd_input *stream; struct buffer_instance *instance; struct pevent_record *record; }; void show_file(const char *name); struct tracecmd_input *read_trace_header(const char *file); int read_trace_files(void); void trace_record(int argc, char **argv); void trace_report(int argc, char **argv); void trace_split(int argc, char **argv); void trace_listen(int argc, char **argv); void trace_restore(int argc, char **argv); void trace_stack(int argc, char **argv); void trace_option(int argc, char **argv); void trace_hist(int argc, char **argv); void trace_snapshot(int argc, char **argv); void trace_mem(int argc, char **argv); void trace_stat(int argc, char **argv); struct hook_list; int trace_profile_record(struct tracecmd_input *handle, struct pevent_record *record, int cpu); void trace_init_profile(struct tracecmd_input *handle, struct hook_list *hooks); int trace_profile(void); struct tracecmd_input * trace_stream_init(struct buffer_instance *instance, int cpu, int fd, int cpus, int profile, struct hook_list *hooks); int trace_stream_read(struct pid_record_data *pids, int nr_pids, struct timeval *tv, int profile); void trace_show_data(struct tracecmd_input *handle, struct pevent_record *record, int profile); /* --- event interation --- */ /* * Use this to iterate through the event directories */ enum event_process { PROCESSED_NONE, PROCESSED_EVENT, PROCESSED_SYSTEM }; enum process_type { PROCESS_EVENT, PROCESS_SYSTEM }; struct event_iter { DIR *system_dir; DIR *event_dir; struct dirent *system_dent; struct dirent *event_dent; }; enum event_iter_type { EVENT_ITER_NONE, EVENT_ITER_SYSTEM, EVENT_ITER_EVENT }; struct event_iter *trace_event_iter_alloc(const char *path); enum event_iter_type trace_event_iter_next(struct event_iter *iter, const char *path, const char *system); void trace_event_iter_free(struct event_iter *iter); char *append_file(const char *dir, const char *name); char *get_file_content(const char *file); char *strstrip(char *str); /* --- instance manipulation --- */ struct func_list { struct func_list *next; const char *func; }; struct buffer_instance { struct buffer_instance *next; const char *name; const char *cpumask; struct event_list *events; struct event_list **event_next; struct event_list *sched_switch_event; struct event_list *sched_wakeup_event; struct event_list *sched_wakeup_new_event; const char *plugin; struct func_list *filter_funcs; struct func_list *notrace_funcs; const char *clock; struct trace_seq *s; struct tracecmd_input *handle; int tracing_on_init_val; int tracing_on_fd; int keep; int buffer_size; int profile; }; extern struct buffer_instance top_instance; extern struct buffer_instance *buffer_instances; extern struct buffer_instance *first_instance; #define for_each_instance(i) for (i = buffer_instances; i; i = (i)->next) #define for_all_instances(i) for (i = first_instance; i; \ i = i == &top_instance ? buffer_instances : (i)->next) struct buffer_instance *create_instance(char *name); void add_instance(struct buffer_instance *instance); char *get_instance_file(struct buffer_instance *instance, const char *file); void show_instance_file(struct buffer_instance *instance, const char *name); int count_cpus(void); #endif /* __TRACE_LOCAL_H */ trace-cmd-2.5.3/trace-mem.c000066400000000000000000000337711246701203100154050ustar00rootroot00000000000000/* * Copyright (C) 2013 Red Hat Inc, Steven Rostedt * * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; version 2 of the License (not later!) * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; if not, see * * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ * * This code was inspired by Ezequiel Garcia's trace_analyze program: * git://github.com/ezequielgarcia/trace_analyze.git * * Unfortuntately, I hate working with Python, and I also had trouble * getting it to work, as I had an old python on my Fedora 13, and it * was written for the newer version. I decided to do some of it here * in C. */ #define _LARGEFILE64_SOURCE #include #include #include #include #include #include #include "trace-local.h" #include "trace-hash-local.h" #include "list.h" static int kmalloc_type; static int kmalloc_node_type; static int kfree_type; static int kmem_cache_alloc_type; static int kmem_cache_alloc_node_type; static int kmem_cache_free_type; struct format_field *common_type_field; struct format_field *kmalloc_callsite_field; struct format_field *kmalloc_bytes_req_field; struct format_field *kmalloc_bytes_alloc_field; struct format_field *kmalloc_ptr_field; struct format_field *kmalloc_node_callsite_field; struct format_field *kmalloc_node_bytes_req_field; struct format_field *kmalloc_node_bytes_alloc_field; struct format_field *kmalloc_node_ptr_field; struct format_field *kfree_ptr_field; struct format_field *kmem_cache_callsite_field; struct format_field *kmem_cache_bytes_req_field; struct format_field *kmem_cache_bytes_alloc_field; struct format_field *kmem_cache_ptr_field; struct format_field *kmem_cache_node_callsite_field; struct format_field *kmem_cache_node_bytes_req_field; struct format_field *kmem_cache_node_bytes_alloc_field; struct format_field *kmem_cache_node_ptr_field; struct format_field *kmem_cache_free_ptr_field; static void *zalloc(size_t size) { return calloc(1, size); } static struct event_format * update_event(struct pevent *pevent, const char *sys, const char *name, int *id) { struct event_format *event; event = pevent_find_event_by_name(pevent, sys, name); if (!event) return NULL; *id = event->id; return event; } static void update_kmalloc(struct pevent *pevent) { struct event_format *event; event = update_event(pevent, "kmem", "kmalloc", &kmalloc_type); if (!event) return; kmalloc_callsite_field = pevent_find_field(event, "call_site"); kmalloc_bytes_req_field = pevent_find_field(event, "bytes_req"); kmalloc_bytes_alloc_field = pevent_find_field(event, "bytes_alloc"); kmalloc_ptr_field = pevent_find_field(event, "ptr"); } static void update_kmalloc_node(struct pevent *pevent) { struct event_format *event; event = update_event(pevent, "kmem", "kmalloc_node", &kmalloc_node_type); if (!event) return; kmalloc_node_callsite_field = pevent_find_field(event, "call_site"); kmalloc_node_bytes_req_field = pevent_find_field(event, "bytes_req"); kmalloc_node_bytes_alloc_field = pevent_find_field(event, "bytes_alloc"); kmalloc_node_ptr_field = pevent_find_field(event, "ptr"); } static void update_kfree(struct pevent *pevent) { struct event_format *event; event = update_event(pevent, "kmem", "kfree", &kfree_type); if (!event) return; kfree_ptr_field = pevent_find_field(event, "ptr"); } static void update_kmem_cache_alloc(struct pevent *pevent) { struct event_format *event; event = update_event(pevent, "kmem", "kmem_cache_alloc", &kmem_cache_alloc_type); if (!event) return; kmem_cache_callsite_field = pevent_find_field(event, "call_site"); kmem_cache_bytes_req_field = pevent_find_field(event, "bytes_req"); kmem_cache_bytes_alloc_field = pevent_find_field(event, "bytes_alloc"); kmem_cache_ptr_field = pevent_find_field(event, "ptr"); } static void update_kmem_cache_alloc_node(struct pevent *pevent) { struct event_format *event; event = update_event(pevent, "kmem", "kmem_cache_alloc_node", &kmem_cache_alloc_node_type); if (!event) return; kmem_cache_node_callsite_field = pevent_find_field(event, "call_site"); kmem_cache_node_bytes_req_field = pevent_find_field(event, "bytes_req"); kmem_cache_node_bytes_alloc_field = pevent_find_field(event, "bytes_alloc"); kmem_cache_node_ptr_field = pevent_find_field(event, "ptr"); } static void update_kmem_cache_free(struct pevent *pevent) { struct event_format *event; event = update_event(pevent, "kmem", "kmem_cache_free", &kmem_cache_free_type); if (!event) return; kmem_cache_free_ptr_field = pevent_find_field(event, "ptr"); } struct func_descr { struct func_descr *next; const char *func; unsigned long total_alloc; unsigned long total_req; unsigned long current_alloc; unsigned long current_req; unsigned long max_alloc; unsigned long max_req; unsigned long waste; unsigned long max_waste; }; struct ptr_descr { struct ptr_descr *next; struct func_descr *func; unsigned long long ptr; unsigned long alloc; unsigned long req; }; #define HASH_BITS 12 #define HASH_SIZE (1 << HASH_BITS) #define HASH_MASK (HASH_SIZE - 1); static struct func_descr *func_hash[HASH_SIZE]; static struct ptr_descr *ptr_hash[HASH_SIZE]; static struct func_descr **func_list; static unsigned func_count; static int make_key(const void *ptr, int size) { int key = 0; int i; char *kp = (char *)&key; const char *indx = ptr; for (i = 0; i < size; i++) kp[i & 3] ^= indx[i]; return trace_hash(key); } static struct func_descr *find_func(const char *func) { struct func_descr *funcd; int key = make_key(func, strlen(func)) & HASH_MASK; for (funcd = func_hash[key]; funcd; funcd = funcd->next) { /* * As func is always a constant to one pointer, * we can use a direct compare instead of strcmp. */ if (funcd->func == func) return funcd; } return NULL; } static struct func_descr *create_func(const char *func) { struct func_descr *funcd; int key = make_key(func, strlen(func)) & HASH_MASK; funcd = zalloc(sizeof(*funcd)); if (!funcd) die("malloc"); funcd->func = func; funcd->next = func_hash[key]; func_hash[key] = funcd; func_count++; return funcd; } static struct ptr_descr *find_ptr(unsigned long long ptr) { struct ptr_descr *ptrd; int key = make_key(&ptr, sizeof(ptr)) & HASH_MASK; for (ptrd = ptr_hash[key]; ptrd; ptrd = ptrd->next) { if (ptrd->ptr == ptr) return ptrd; } return NULL; } static struct ptr_descr *create_ptr(unsigned long long ptr) { struct ptr_descr *ptrd; int key = make_key(&ptr, sizeof(ptr)) & HASH_MASK; ptrd = zalloc(sizeof(*ptrd)); if (!ptrd) die("malloc"); ptrd->ptr = ptr; ptrd->next = ptr_hash[key]; ptr_hash[key] = ptrd; return ptrd; } static void remove_ptr(unsigned long long ptr) { struct ptr_descr *ptrd, **last; int key = make_key(&ptr, sizeof(ptr)) & HASH_MASK; last = &ptr_hash[key]; for (ptrd = ptr_hash[key]; ptrd; ptrd = ptrd->next) { if (ptrd->ptr == ptr) break; last = &ptrd->next; } if (!ptrd) return; *last = ptrd->next; free(ptrd); } static void add_kmalloc(const char *func, unsigned long long ptr, unsigned int req, int alloc) { struct func_descr *funcd; struct ptr_descr *ptrd; funcd = find_func(func); if (!funcd) funcd = create_func(func); funcd->total_alloc += alloc; funcd->total_req += req; funcd->current_alloc += alloc; funcd->current_req += req; if (funcd->current_alloc > funcd->max_alloc) funcd->max_alloc = funcd->current_alloc; if (funcd->current_req > funcd->max_req) funcd->max_req = funcd->current_req; ptrd = find_ptr(ptr); if (!ptrd) ptrd = create_ptr(ptr); ptrd->alloc = alloc; ptrd->req = req; ptrd->func = funcd; } static void remove_kmalloc(unsigned long long ptr) { struct func_descr *funcd; struct ptr_descr *ptrd; ptrd = find_ptr(ptr); if (!ptrd) return; funcd = ptrd->func; funcd->current_alloc -= ptrd->alloc; funcd->current_req -= ptrd->req; remove_ptr(ptr); } static void process_kmalloc(struct pevent *pevent, struct pevent_record *record, struct format_field *callsite_field, struct format_field *bytes_req_field, struct format_field *bytes_alloc_field, struct format_field *ptr_field) { unsigned long long callsite; unsigned long long val; unsigned long long ptr; unsigned int req; int alloc; const char *func; pevent_read_number_field(callsite_field, record->data, &callsite); pevent_read_number_field(bytes_req_field, record->data, &val); req = val; pevent_read_number_field(bytes_alloc_field, record->data, &val); alloc = val; pevent_read_number_field(ptr_field, record->data, &ptr); func = pevent_find_function(pevent, callsite); add_kmalloc(func, ptr, req, alloc); } static void process_kfree(struct pevent *pevent, struct pevent_record *record, struct format_field *ptr_field) { unsigned long long ptr; pevent_read_number_field(ptr_field, record->data, &ptr); remove_kmalloc(ptr); } static void process_record(struct pevent *pevent, struct pevent_record *record) { unsigned long long val; int type; pevent_read_number_field(common_type_field, record->data, &val); type = val; if (type == kmalloc_type) return process_kmalloc(pevent, record, kmalloc_callsite_field, kmalloc_bytes_req_field, kmalloc_bytes_alloc_field, kmalloc_ptr_field); if (type == kmalloc_node_type) return process_kmalloc(pevent, record, kmalloc_node_callsite_field, kmalloc_node_bytes_req_field, kmalloc_node_bytes_alloc_field, kmalloc_node_ptr_field); if (type == kfree_type) return process_kfree(pevent, record, kfree_ptr_field); if (type == kmem_cache_alloc_type) return process_kmalloc(pevent, record, kmem_cache_callsite_field, kmem_cache_bytes_req_field, kmem_cache_bytes_alloc_field, kmem_cache_ptr_field); if (type == kmem_cache_alloc_node_type) return process_kmalloc(pevent, record, kmem_cache_node_callsite_field, kmem_cache_node_bytes_req_field, kmem_cache_node_bytes_alloc_field, kmem_cache_node_ptr_field); if (type == kmem_cache_free_type) return process_kfree(pevent, record, kmem_cache_free_ptr_field); } static int func_cmp(const void *a, const void *b) { const struct func_descr *fa = *(const struct func_descr **)a; const struct func_descr *fb = *(const struct func_descr **)b; if (fa->waste > fb->waste) return -1; if (fa->waste < fb->waste) return 1; return 0; } static void sort_list(void) { struct func_descr *funcd; int h; int i = 0; func_list = zalloc(sizeof(*func_list) * func_count); for (h = 0; h < HASH_SIZE; h++) { for (funcd = func_hash[h]; funcd; funcd = funcd->next) { funcd->waste = funcd->current_alloc - funcd->current_req; funcd->max_waste = funcd->max_alloc - funcd->max_req; if (i == func_count) die("more funcs than expected\n"); func_list[i++] = funcd; } } qsort(func_list, func_count, sizeof(*func_list), func_cmp); } static void print_list(void) { struct func_descr *funcd; int i; printf(" Function \t"); printf("Waste\tAlloc\treq\t\tTotAlloc TotReq\t\tMaxAlloc MaxReq\t"); printf("MaxWaste\n"); printf(" -------- \t"); printf("-----\t-----\t---\t\t-------- ------\t\t-------- ------\t"); printf("--------\n"); for (i = 0; i < func_count; i++) { funcd = func_list[i]; printf("%32s\t%ld\t%ld\t%ld\t\t%8ld %8ld\t\t%8ld %8ld\t%ld\n", funcd->func, funcd->waste, funcd->current_alloc, funcd->current_req, funcd->total_alloc, funcd->total_req, funcd->max_alloc, funcd->max_req, funcd->max_waste); } } static void do_trace_mem(struct tracecmd_input *handle) { struct pevent *pevent = tracecmd_get_pevent(handle); struct event_format *event; struct pevent_record *record; int missed_events = 0; int cpus; int cpu; int ret; ret = tracecmd_init_data(handle); if (ret < 0) die("failed to init data"); if (ret > 0) die("trace-cmd mem does not work with latency traces\n"); cpus = tracecmd_cpus(handle); /* Need to get any event */ for (cpu = 0; cpu < cpus; cpu++) { record = tracecmd_peek_data(handle, cpu); if (record) break; } if (!record) die("No records found in file"); ret = pevent_data_type(pevent, record); event = pevent_data_event_from_type(pevent, ret); common_type_field = pevent_find_common_field(event, "common_type"); if (!common_type_field) die("Can't find a 'type' field?"); update_kmalloc(pevent); update_kmalloc_node(pevent); update_kfree(pevent); update_kmem_cache_alloc(pevent); update_kmem_cache_alloc_node(pevent); update_kmem_cache_free(pevent); while ((record = tracecmd_read_next_data(handle, &cpu))) { /* record missed event */ if (!missed_events && record->missed_events) missed_events = 1; process_record(pevent, record); free_record(record); } sort_list(); print_list(); } void trace_mem(int argc, char **argv) { struct tracecmd_input *handle; const char *input_file = NULL; int ret; for (;;) { int c; c = getopt(argc-1, argv+1, "+hi:"); if (c == -1) break; switch (c) { case 'h': usage(argv); break; case 'i': if (input_file) die("Only one input for mem"); input_file = optarg; break; default: usage(argv); } } if ((argc - optind) >= 2) { if (input_file) usage(argv); input_file = argv[optind + 1]; } if (!input_file) input_file = "trace.dat"; handle = tracecmd_alloc(input_file); if (!handle) die("can't open %s\n", input_file); ret = tracecmd_read_headers(handle); if (ret) return; do_trace_mem(handle); tracecmd_close(handle); } trace-cmd-2.5.3/trace-output.c000066400000000000000000000701451246701203100161630ustar00rootroot00000000000000/* * Copyright (C) 2009, 2010 Red Hat Inc, Steven Rostedt * * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ * This program is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; * version 2.1 of the License (not later!) * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this program; if not, see * * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ */ #define _LARGEFILE64_SOURCE #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include "trace-cmd-local.h" #include "list.h" #include "version.h" /* We can't depend on the host size for size_t, all must be 64 bit */ typedef unsigned long long tsize_t; typedef long long stsize_t; static struct tracecmd_event_list all_event_list = { .next = NULL, .glob = "all" }; struct tracecmd_option { unsigned short id; int size; void *data; tsize_t offset; struct list_head list; }; struct tracecmd_output { int fd; int page_size; int cpus; struct pevent *pevent; char *tracing_dir; int options_written; int nr_options; struct list_head options; }; struct list_event { struct list_event *next; char *name; char *file; }; struct list_event_system { struct list_event_system *next; struct list_event *events; char *name; }; static stsize_t do_write_check(struct tracecmd_output *handle, const void *data, tsize_t size) { return __do_write_check(handle->fd, data, size); } static short convert_endian_2(struct tracecmd_output *handle, short val) { if (!handle->pevent) return val; return __data2host2(handle->pevent, val); } static int convert_endian_4(struct tracecmd_output *handle, int val) { if (!handle->pevent) return val; return __data2host4(handle->pevent, val); } static unsigned long long convert_endian_8(struct tracecmd_output *handle, unsigned long long val) { if (!handle->pevent) return val; return __data2host8(handle->pevent, val); } void tracecmd_output_free(struct tracecmd_output *handle) { struct tracecmd_option *option; if (!handle) return; if (handle->tracing_dir) free(handle->tracing_dir); if (handle->pevent) pevent_unref(handle->pevent); while (!list_empty(&handle->options)) { option = container_of(handle->options.next, struct tracecmd_option, list); list_del(&option->list); free(option->data); free(option); } free(handle); } void tracecmd_output_close(struct tracecmd_output *handle) { if (!handle) return; if (handle->fd >= 0) { close(handle->fd); handle->fd = -1; } tracecmd_output_free(handle); } static unsigned long get_size_fd(int fd) { unsigned long long size = 0; char buf[BUFSIZ]; int r; do { r = read(fd, buf, BUFSIZ); if (r > 0) size += r; } while (r > 0); lseek(fd, 0, SEEK_SET); return size; } static unsigned long get_size(const char *file) { unsigned long long size = 0; int fd; fd = open(file, O_RDONLY); if (fd < 0) die("Can't read '%s'", file); size = get_size_fd(fd); close(fd); return size; } static tsize_t copy_file_fd(struct tracecmd_output *handle, int fd) { tsize_t size = 0; char buf[BUFSIZ]; stsize_t r; do { r = read(fd, buf, BUFSIZ); if (r > 0) { size += r; if (do_write_check(handle, buf, r)) return 0; } } while (r > 0); return size; } static tsize_t copy_file(struct tracecmd_output *handle, const char *file) { tsize_t size = 0; int fd; fd = open(file, O_RDONLY); if (fd < 0) die("Can't read '%s'", file); size = copy_file_fd(handle, fd); close(fd); return size; } /* * Finds the path to the debugfs/tracing * Allocates the string and stores it. */ static const char *find_tracing_dir(struct tracecmd_output *handle) { if (!handle->tracing_dir) handle->tracing_dir = tracecmd_find_tracing_dir(); return handle->tracing_dir; } static char *get_tracing_file(struct tracecmd_output *handle, const char *name) { const char *tracing; char *file; tracing = find_tracing_dir(handle); if (!tracing) return NULL; file = malloc_or_die(strlen(tracing) + strlen(name) + 2); if (!file) return NULL; sprintf(file, "%s/%s", tracing, name); return file; } static void put_tracing_file(char *file) { free(file); } int tracecmd_ftrace_enable(int set) { struct stat buf; char *path = "/proc/sys/kernel/ftrace_enabled"; int fd; char *val = set ? "1" : "0"; int ret = 0; /* if ftace_enable does not exist, simply ignore it */ fd = stat(path, &buf); if (fd < 0) return ENODEV; fd = open(path, O_WRONLY); if (fd < 0) die ("Can't %s ftrace", set ? "enable" : "disable"); if (write(fd, val, 1) < 0) ret = -1; close(fd); return ret; } static int read_header_files(struct tracecmd_output *handle) { tsize_t size, check_size, endian8; struct stat st; char *path; int fd; int ret; path = get_tracing_file(handle, "events/header_page"); if (!path) return -1; ret = stat(path, &st); if (ret < 0) { /* old style did not show this info, just add zero */ put_tracing_file(path); if (do_write_check(handle, "header_page", 12)) return -1; size = 0; if (do_write_check(handle, &size, 8)) return -1; if (do_write_check(handle, "header_event", 13)) return -1; if (do_write_check(handle, &size, 8)) return -1; return 0; } fd = open(path, O_RDONLY); if (fd < 0) { warning("can't read '%s'", path); return -1; } /* unfortunately, you can not stat debugfs files for size */ size = get_size_fd(fd); if (do_write_check(handle, "header_page", 12)) goto out_close; endian8 = convert_endian_8(handle, size); if (do_write_check(handle, &endian8, 8)) goto out_close; check_size = copy_file_fd(handle, fd); close(fd); if (size != check_size) { warning("wrong size for '%s' size=%lld read=%lld", path, size, check_size); errno = EINVAL; return -1; } put_tracing_file(path); path = get_tracing_file(handle, "events/header_event"); if (!path) return -1; fd = open(path, O_RDONLY); if (fd < 0) die("can't read '%s'", path); size = get_size_fd(fd); if (do_write_check(handle, "header_event", 13)) goto out_close; endian8 = convert_endian_8(handle, size); if (do_write_check(handle, &endian8, 8)) goto out_close; check_size = copy_file_fd(handle, fd); close(fd); if (size != check_size) { warning("wrong size for '%s'", path); return -1; } put_tracing_file(path); return 0; out_close: close(fd); return -1; } static int copy_event_system(struct tracecmd_output *handle, struct list_event_system *slist) { struct list_event *elist; unsigned long long size, check_size, endian8; struct stat st; char *format; int endian4; int count = 0; int ret; for (elist = slist->events; elist; elist = elist->next) count++; endian4 = convert_endian_4(handle, count); if (do_write_check(handle, &endian4, 4)) return -1; for (elist = slist->events; elist; elist = elist->next) { format = elist->file; ret = stat(format, &st); if (ret >= 0) { /* unfortunately, you can not stat debugfs files for size */ size = get_size(format); endian8 = convert_endian_8(handle, size); if (do_write_check(handle, &endian8, 8)) return -1; check_size = copy_file(handle, format); if (size != check_size) { warning("error in size of file '%s'", format); return -1; } } } return 0; } static void add_list_event_system(struct list_event_system **systems, const char *system, const char *event, const char *path) { struct list_event_system *slist; struct list_event *elist; for (slist = *systems; slist; slist = slist->next) if (strcmp(slist->name, system) == 0) break; if (!slist) { slist = malloc_or_die(sizeof(*slist)); slist->name = strdup(system); slist->next = *systems; slist->events = NULL; *systems = slist; } for (elist = slist->events; elist; elist = elist->next) if (strcmp(elist->name, event) == 0) break; if (!elist) { elist = malloc_or_die(sizeof(*elist)); elist->name = strdup(event); elist->file = strdup(path); elist->next = slist->events; slist->events = elist; } } static void free_list_events(struct list_event_system *list) { struct list_event_system *slist; struct list_event *elist; while (list) { slist = list; list = list->next; while (slist->events) { elist = slist->events; slist->events = elist->next; free(elist->name); free(elist->file); free(elist); } free(slist->name); free(slist); } } static void glob_events(struct tracecmd_output *handle, struct list_event_system **systems, const char *str) { glob_t globbuf; char *events_path; char *system; char *event; char *path; char *file; char *ptr; int do_ftrace = 0; int events_len; int ret; int i; if (strncmp(str, "ftrace/", 7) == 0) do_ftrace = 1; events_path = get_tracing_file(handle, "events"); events_len = strlen(events_path); path = malloc_or_die(events_len + strlen(str) + strlen("/format") + 2); path[0] = '\0'; strcat(path, events_path); strcat(path, "/"); strcat(path, str); strcat(path, "/format"); put_tracing_file(events_path); globbuf.gl_offs = 0; ret = glob(path, 0, NULL, &globbuf); free(path); if (ret < 0) return; for (i = 0; i < globbuf.gl_pathc; i++) { file = globbuf.gl_pathv[i]; system = strdup(file + events_len + 1); system = strtok_r(system, "/", &ptr); if (!ptr) { /* ?? should we warn? */ free(system); continue; } if (!do_ftrace && strcmp(system, "ftrace") == 0) { free(system); continue; } event = strtok_r(NULL, "/", &ptr); if (!ptr) { /* ?? should we warn? */ free(system); continue; } add_list_event_system(systems, system, event, file); free(system); } globfree(&globbuf); } static void create_event_list_item(struct tracecmd_output *handle, struct list_event_system **systems, struct tracecmd_event_list *list) { char *ptr; char *str; str = strdup(list->glob); if (!str) die("strdup - no memory"); /* system and event names are separated by a ':' */ ptr = strchr(str, ':'); if (ptr) *ptr = '/'; else /* system and event may also be separated by a '/' */ ptr = strchr(str, '/'); if (ptr) { glob_events(handle, systems, str); free(str); return; } ptr = str; str = malloc_or_die(strlen(ptr) + 3); str[0] = '\0'; strcat(str, ptr); strcat(str, "/*"); glob_events(handle, systems, str); str[0] = '\0'; strcat(str, "*/"); strcat(str, ptr); glob_events(handle, systems, str); free(ptr); free(str); } static int read_ftrace_files(struct tracecmd_output *handle) { struct list_event_system *systems = NULL; struct tracecmd_event_list list = { .glob = "ftrace/*" }; int ret; create_event_list_item(handle, &systems, &list); ret = copy_event_system(handle, systems); free_list_events(systems); return ret; } static struct list_event_system * create_event_list(struct tracecmd_output *handle, struct tracecmd_event_list *event_list) { struct list_event_system *systems = NULL; struct tracecmd_event_list *list; for (list = event_list; list; list = list->next) create_event_list_item(handle, &systems, list); return systems; } static int read_event_files(struct tracecmd_output *handle, struct tracecmd_event_list *event_list) { struct list_event_system *systems; struct list_event_system *slist; struct tracecmd_event_list *list; struct tracecmd_event_list all_events = { .glob = "*/*" }; int count = 0; int endian4; int ret; /* * If any of the list is the special keyword "all" then * just do all files. */ for (list = event_list; list; list = list->next) { if (strcmp(list->glob, "all") == 0) break; } /* all events are listed, use a global glob */ if (list) event_list = &all_events; systems = create_event_list(handle, event_list); for (slist = systems; slist; slist = slist->next) count++; ret = -1; endian4 = convert_endian_4(handle, count); if (do_write_check(handle, &endian4, 4)) goto out_free; ret = 0; for (slist = systems; !ret && slist; slist = slist->next) { if (do_write_check(handle, slist->name, strlen(slist->name) + 1)) { ret = -1; continue; } ret = copy_event_system(handle, slist); } out_free: free_list_events(systems); return ret; } static int read_proc_kallsyms(struct tracecmd_output *handle, const char *kallsyms) { unsigned int size, check_size, endian4; const char *path = "/proc/kallsyms"; struct stat st; int ret; if (kallsyms) path = kallsyms; ret = stat(path, &st); if (ret < 0) { /* not found */ size = 0; endian4 = convert_endian_4(handle, size); if (do_write_check(handle, &endian4, 4)) return -1; return 0; } size = get_size(path); endian4 = convert_endian_4(handle, size); if (do_write_check(handle, &endian4, 4)) return -1; check_size = copy_file(handle, path); if (size != check_size) { errno = EINVAL; warning("error in size of file '%s'", path); return -1; } return 0; } static int read_ftrace_printk(struct tracecmd_output *handle) { unsigned int size, check_size, endian4; struct stat st; char *path; int ret; path = get_tracing_file(handle, "printk_formats"); if (!path) return -1; ret = stat(path, &st); if (ret < 0) { /* not found */ size = 0; endian4 = convert_endian_4(handle, size); if (do_write_check(handle, &endian4, 4)) goto fail; goto out; } size = get_size(path); endian4 = convert_endian_4(handle, size); if (do_write_check(handle, &endian4, 4)) goto fail; check_size = copy_file(handle, path); if (size != check_size) { errno = EINVAL; warning("error in size of file '%s'", path); goto fail; } out: put_tracing_file(path); return 0; fail: put_tracing_file(path); return -1; } static int save_tracing_file_data(struct tracecmd_output *handle, const char *filename) { unsigned long long endian8; char *file = NULL; struct stat st; off64_t check_size; off64_t size; int ret = -1; file = get_tracing_file(handle, filename); if (!file) return -1; ret = stat(file, &st); if (ret >= 0) { size = get_size(file); endian8 = convert_endian_8(handle, size); if (do_write_check(handle, &endian8, 8)) goto out_free; check_size = copy_file(handle, file); if (size != check_size) { errno = EINVAL; warning("error in size of file '%s'", file); goto out_free; } } else { size = 0; endian8 = convert_endian_8(handle, size); if (do_write_check(handle, &endian8, 8)) goto out_free; } ret = 0; out_free: put_tracing_file(file); return ret; } static struct tracecmd_output * create_file_fd(int fd, struct tracecmd_input *ihandle, const char *tracing_dir, const char *kallsyms, struct tracecmd_event_list *list) { struct tracecmd_output *handle; struct pevent *pevent; char buf[BUFSIZ]; int endian4; handle = malloc(sizeof(*handle)); if (!handle) return NULL; memset(handle, 0, sizeof(*handle)); handle->fd = fd; if (tracing_dir) { handle->tracing_dir = strdup(tracing_dir); if (!handle->tracing_dir) goto out_free; } list_head_init(&handle->options); buf[0] = 23; buf[1] = 8; buf[2] = 68; memcpy(buf + 3, "tracing", 7); if (do_write_check(handle, buf, 10)) goto out_free; if (do_write_check(handle, FILE_VERSION_STRING, strlen(FILE_VERSION_STRING) + 1)) goto out_free; /* get endian and page size */ if (ihandle) { pevent = tracecmd_get_pevent(ihandle); /* Use the pevent of the ihandle for later writes */ handle->pevent = tracecmd_get_pevent(ihandle); pevent_ref(pevent); if (pevent->file_bigendian) buf[0] = 1; else buf[0] = 0; handle->page_size = tracecmd_page_size(ihandle); } else { if (tracecmd_host_bigendian()) buf[0] = 1; else buf[0] = 0; handle->page_size = getpagesize(); } if (do_write_check(handle, buf, 1)) goto out_free; /* save size of long (this may not be what the kernel is) */ buf[0] = sizeof(long); if (do_write_check(handle, buf, 1)) goto out_free; endian4 = convert_endian_4(handle, handle->page_size); if (do_write_check(handle, &endian4, 4)) goto out_free; if (ihandle) return handle; if (read_header_files(handle)) goto out_free; if (read_ftrace_files(handle)) goto out_free; if (read_event_files(handle, list)) goto out_free; if (read_proc_kallsyms(handle, kallsyms)) goto out_free; if (read_ftrace_printk(handle)) goto out_free; /* * Save the command lines; */ if (save_tracing_file_data(handle, "saved_cmdlines") < 0) goto out_free; return handle; out_free: tracecmd_output_close(handle); return NULL; } static struct tracecmd_output *create_file(const char *output_file, struct tracecmd_input *ihandle, const char *tracing_dir, const char *kallsyms, struct tracecmd_event_list *list) { struct tracecmd_output *handle; int fd; fd = open(output_file, O_RDWR | O_CREAT | O_TRUNC | O_LARGEFILE, 0644); if (fd < 0) return NULL; handle = create_file_fd(fd, ihandle, tracing_dir, kallsyms, list); if (!handle) { close(fd); unlink(output_file); } return handle; } /** * tracecmd_add_option - add options to the file * @handle: the output file handle name * @id: the id of the option * @size: the size of the option data * @data: the data to write to the file. * * Returns handle to update option if needed. * Just the content can be updated, with smaller or equal to * content than the specified size. */ struct tracecmd_option * tracecmd_add_option(struct tracecmd_output *handle, unsigned short id, int size, const void *data) { struct tracecmd_option *option; /* * We can only add options before they were written. * This may change in the future. */ if (handle->options_written) return NULL; handle->nr_options++; option = malloc(sizeof(*option)); if (!option) die("Could not allocate space for option"); option->id = id; option->size = size; option->data = malloc_or_die(size); memcpy(option->data, data, size); list_add_tail(&option->list, &handle->options); return option; } static int add_options(struct tracecmd_output *handle) { struct tracecmd_option *options; unsigned short option; unsigned short endian2; unsigned int endian4; /* If already written, ignore */ if (handle->options_written) return 0; if (do_write_check(handle, "options ", 10)) return -1; list_for_each_entry(options, &handle->options, list) { endian2 = convert_endian_2(handle, options->id); if (do_write_check(handle, &endian2, 2)) return -1; endian4 = convert_endian_4(handle, options->size); if (do_write_check(handle, &endian4, 4)) return -1; /* Save the data location in case it needs to be updated */ options->offset = lseek64(handle->fd, 0, SEEK_CUR); if (do_write_check(handle, options->data, options->size)) return -1; } option = TRACECMD_OPTION_DONE; if (do_write_check(handle, &option, 2)) return -1; handle->options_written = 1; return 0; } int tracecmd_update_option(struct tracecmd_output *handle, struct tracecmd_option *option, int size, const void *data) { tsize_t offset; stsize_t ret; if (size > option->size) { warning("Can't update option with more data than allocated"); return -1; } if (!handle->options_written) { /* Hasn't been written yet. Just update current pointer */ option->size = size; memcpy(option->data, data, size); return 0; } /* Save current offset */ offset = lseek64(handle->fd, 0, SEEK_CUR); ret = lseek64(handle->fd, option->offset, SEEK_SET); if (ret == (off64_t)-1) { warning("could not seek to %lld\n", option->offset); return -1; } if (do_write_check(handle, data, size)) return -1; ret = lseek64(handle->fd, offset, SEEK_SET); if (ret == (off64_t)-1) { warning("could not seek to %lld\n", offset); return -1; } return 0; } struct tracecmd_option * tracecmd_add_buffer_option(struct tracecmd_output *handle, const char *name) { struct tracecmd_option *option; char *buf; int size = 8 + strlen(name) + 1; buf = malloc(size); if (!buf) { warning("Failed to malloc buffer"); return NULL; } *(tsize_t *)buf = 0; strcpy(buf + 8, name); option = tracecmd_add_option(handle, TRACECMD_OPTION_BUFFER, size, buf); free(buf); return option; } struct tracecmd_output *tracecmd_create_file_latency(const char *output_file, int cpus) { struct tracecmd_output *handle; char *path; handle = create_file(output_file, NULL, NULL, NULL, &all_event_list); if (!handle) return NULL; cpus = convert_endian_4(handle, cpus); if (do_write_check(handle, &cpus, 4)) goto out_free; if (add_options(handle) < 0) goto out_free; if (do_write_check(handle, "latency ", 10)) goto out_free; path = get_tracing_file(handle, "trace"); if (!path) goto out_free; copy_file(handle, path); put_tracing_file(path); return handle; out_free: tracecmd_output_close(handle); return NULL; } static int __tracecmd_append_cpu_data(struct tracecmd_output *handle, int cpus, char * const *cpu_data_files) { off64_t *offsets = NULL; unsigned long long *sizes = NULL; off64_t offset; unsigned long long endian8; off64_t check_size; char *file; struct stat st; int ret; int i; if (do_write_check(handle, "flyrecord", 10)) goto out_free; offsets = malloc_or_die(sizeof(*offsets) * cpus); if (!offsets) goto out_free; sizes = malloc_or_die(sizeof(*sizes) * cpus); if (!sizes) goto out_free; offset = lseek64(handle->fd, 0, SEEK_CUR); /* hold any extra data for data */ offset += cpus * (16); /* * Unfortunately, the trace_clock data was placed after the * cpu data, and wasn't accounted for with the offsets. * We need to save room for the trace_clock file. This means * we need to find the size of it before we define the final * offsets. */ file = get_tracing_file(handle, "trace_clock"); if (!file) goto out_free; /* Save room for storing the size */ offset += 8; ret = stat(file, &st); if (ret >= 0) offset += get_size(file); put_tracing_file(file); /* Page align offset */ offset = (offset + (handle->page_size - 1)) & ~(handle->page_size - 1); for (i = 0; i < cpus; i++) { file = cpu_data_files[i]; ret = stat(file, &st); if (ret < 0) { warning("can not stat '%s'", file); goto out_free; } offsets[i] = offset; sizes[i] = st.st_size; offset += st.st_size; offset = (offset + (handle->page_size - 1)) & ~(handle->page_size - 1); endian8 = convert_endian_8(handle, offsets[i]); if (do_write_check(handle, &endian8, 8)) goto out_free; endian8 = convert_endian_8(handle, sizes[i]); if (do_write_check(handle, &endian8, 8)) goto out_free; } if (save_tracing_file_data(handle, "trace_clock") < 0) goto out_free; for (i = 0; i < cpus; i++) { fprintf(stderr, "CPU%d data recorded at offset=0x%llx\n", i, (unsigned long long) offsets[i]); offset = lseek64(handle->fd, offsets[i], SEEK_SET); if (offset == (off64_t)-1) { warning("could not seek to %lld\n", offsets[i]); goto out_free; } check_size = copy_file(handle, cpu_data_files[i]); if (check_size != sizes[i]) { errno = EINVAL; warning("did not match size of %lld to %lld", check_size, sizes[i]); goto out_free; } fprintf(stderr, " %llu bytes in size\n", (unsigned long long)check_size); } free(offsets); free(sizes); return 0; out_free: free(offsets); free(sizes); return -1; } int tracecmd_append_cpu_data(struct tracecmd_output *handle, int cpus, char * const *cpu_data_files) { int endian4; endian4 = convert_endian_4(handle, cpus); if (do_write_check(handle, &endian4, 4)) return -1; if (add_options(handle) < 0) return -1; return __tracecmd_append_cpu_data(handle, cpus, cpu_data_files); } int tracecmd_append_buffer_cpu_data(struct tracecmd_output *handle, struct tracecmd_option *option, int cpus, char * const *cpu_data_files) { tsize_t offset; stsize_t ret; offset = lseek64(handle->fd, 0, SEEK_CUR); /* Go to the option data, where will write the offest */ ret = lseek64(handle->fd, option->offset, SEEK_SET); if (ret == (off64_t)-1) { warning("could not seek to %lld\n", option->offset); return -1; } if (do_write_check(handle, &offset, 8)) return -1; /* Go back to end of file */ ret = lseek64(handle->fd, offset, SEEK_SET); if (ret == (off64_t)-1) { warning("could not seek to %lld\n", offset); return -1; } return __tracecmd_append_cpu_data(handle, cpus, cpu_data_files); } int tracecmd_attach_cpu_data_fd(int fd, int cpus, char * const *cpu_data_files) { struct tracecmd_input *ihandle; struct tracecmd_output *handle; struct pevent *pevent; int ret = -1; /* Move the file descriptor to the beginning */ if (lseek(fd, 0, SEEK_SET) == (off_t)-1) return -1; /* get a input handle from this */ ihandle = tracecmd_alloc_fd(fd); if (!ihandle) return -1; /* move the file descriptor to the end */ if (lseek(fd, 0, SEEK_END) == (off_t)-1) goto out_free; /* create a partial output handle */ handle = malloc(sizeof(*handle)); if (!handle) goto out_free; memset(handle, 0, sizeof(*handle)); handle->fd = fd; /* get endian and page size */ pevent = tracecmd_get_pevent(ihandle); /* Use the pevent of the ihandle for later writes */ handle->pevent = tracecmd_get_pevent(ihandle); pevent_ref(pevent); handle->page_size = tracecmd_page_size(ihandle); list_head_init(&handle->options); if (tracecmd_append_cpu_data(handle, cpus, cpu_data_files) >= 0) ret = 0; tracecmd_output_close(handle); out_free: tracecmd_close(ihandle); return ret; } int tracecmd_attach_cpu_data(char *file, int cpus, char * const *cpu_data_files) { int fd; fd = open(file, O_RDWR); if (fd < 0) return -1; return tracecmd_attach_cpu_data_fd(fd, cpus, cpu_data_files); } struct tracecmd_output * tracecmd_create_file_glob(const char *output_file, int cpus, char * const *cpu_data_files, struct tracecmd_event_list *list) { struct tracecmd_output *handle; handle = create_file(output_file, NULL, NULL, NULL, list); if (!handle) return NULL; if (tracecmd_append_cpu_data(handle, cpus, cpu_data_files) < 0) { tracecmd_output_close(handle); return NULL; } return handle; } struct tracecmd_output *tracecmd_create_file(const char *output_file, int cpus, char * const *cpu_data_files) { return tracecmd_create_file_glob(output_file, cpus, cpu_data_files, &all_event_list); } struct tracecmd_output *tracecmd_create_init_fd(int fd) { return create_file_fd(fd, NULL, NULL, NULL, &all_event_list); } struct tracecmd_output * tracecmd_create_init_fd_glob(int fd, struct tracecmd_event_list *list) { return create_file_fd(fd, NULL, NULL, NULL, list); } struct tracecmd_output * tracecmd_create_init_file_glob(const char *output_file, struct tracecmd_event_list *list) { return create_file(output_file, NULL, NULL, NULL, list); } struct tracecmd_output *tracecmd_create_init_file(const char *output_file) { return create_file(output_file, NULL, NULL, NULL, &all_event_list); } struct tracecmd_output *tracecmd_create_init_file_override(const char *output_file, const char *tracing_dir, const char *kallsyms) { return create_file(output_file, NULL, tracing_dir, kallsyms, &all_event_list); } /** * tracecmd_copy - copy the headers of one trace.dat file for another * @ihandle: input handle of the trace.dat file to copy * @file: the trace.dat file to create * * Reads the header information and creates a new trace data file * with the same characteristics (events and all) and returns * tracecmd_output handle to this new file. */ struct tracecmd_output *tracecmd_copy(struct tracecmd_input *ihandle, const char *file) { struct tracecmd_output *handle; handle = create_file(file, ihandle, NULL, NULL, &all_event_list); if (!handle) return NULL; if (tracecmd_copy_headers(ihandle, handle->fd) < 0) goto out_free; /* The file is all ready to have cpu data attached */ return handle; out_free: tracecmd_output_close(handle); return NULL; } trace-cmd-2.5.3/trace-plot-cpu.c000066400000000000000000000340511246701203100163620ustar00rootroot00000000000000/* * Copyright (C) 2010 Red Hat Inc, Steven Rostedt * * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; version 2 of the License (not later!) * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; if not, see * * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ */ #include #include "trace-graph.h" #include "cpu.h" struct cpu_plot_info { int cpu; unsigned long long last_time; int last_pid; struct pevent_record *last_record; }; static gint hash_pid(gint val) { /* idle always gets black */ if (!val) return 0; return trace_hash(val); } static void convert_nano(unsigned long long time, unsigned long *sec, unsigned long *usec) { *sec = time / 1000000000ULL; *usec = (time / 1000) % 1000000; } static struct pevent_record *get_record_from_time(struct graph_info *ginfo, int cpu, unsigned long long time) { struct pevent_record *record; tracecmd_set_cpu_to_timestamp(ginfo->handle, cpu, time); record = tracecmd_read_data(ginfo->handle, cpu); while (record && record->ts < time) { free_record(record); record = tracecmd_read_data(ginfo->handle, cpu); } return record; } static int cpu_plot_match_time(struct graph_info *ginfo, struct graph_plot *plot, unsigned long long time) { struct cpu_plot_info *cpu_info = plot->private; struct pevent_record *record; int ret = 0; record = get_record_from_time(ginfo, cpu_info->cpu, time); if (record && record->ts == time) ret = 1; free_record(record); return ret; } /* * Return 1 if we should skip record, otherwise 0 * * @orig_pid gets the pid of the record * @sched_pid gets the pid of the record or if the record is * a sched_switch, it gets the next task * If it is a wakeup, then sched_pid gets the task being woken * @is_sched_switch returns 1 on context switch, otherwise 0 */ static int filter_record(struct graph_info *ginfo, struct pevent_record *record, int *orig_pid, int *sched_pid, gboolean *sched_switch) { gboolean is_sched_switch = FALSE; gboolean is_wakeup = FALSE; const char *comm; int wake_pid; int filter; *orig_pid = pevent_data_pid(ginfo->pevent, record); filter = trace_graph_filter_on_task(ginfo, *orig_pid); if (trace_graph_check_sched_switch(ginfo, record, sched_pid, &comm)) { is_sched_switch = TRUE; /* Also show the task switching out */ if (filter) filter = trace_graph_filter_on_task(ginfo, *sched_pid); } else *sched_pid = *orig_pid; if (filter) { /* Lets see if a filtered task is waking up */ is_wakeup = trace_graph_check_sched_wakeup(ginfo, record, &wake_pid); if (is_wakeup) { filter = trace_graph_filter_on_task(ginfo, wake_pid); if (!filter) *sched_pid = wake_pid; } } *sched_switch = is_sched_switch; return filter; } static int cpu_plot_display_last_event(struct graph_info *ginfo, struct graph_plot *plot, struct trace_seq *s, unsigned long long time) { struct cpu_plot_info *cpu_info = plot->private; struct event_format *event; struct pevent_record *record; int cpu = cpu_info->cpu; unsigned long long offset = 0; gboolean is_sched_switch; int sched_pid; int pid; int type; /* * Get the next record so we know can save its offset and * reset the cursor, not to mess up the plotting */ record = tracecmd_peek_data(ginfo->handle, cpu); if (record) offset = record->offset; /* Don't need to free a peek */ tracecmd_set_cpu_to_timestamp(ginfo->handle, cpu, time); again: /* find the non filtered event */ while ((record = tracecmd_read_data(ginfo->handle, cpu))) { if (!filter_record(ginfo, record, &pid, &sched_pid, &is_sched_switch) && !trace_graph_filter_on_event(ginfo, record) && record->ts >= time) break; free_record(record); } if (offset) tracecmd_set_cursor(ginfo->handle, cpu, offset); if (!record) return 0; /* Must have the record we want */ type = pevent_data_type(ginfo->pevent, record); event = pevent_data_event_from_type(ginfo->pevent, type); /* Unlikely that the event was not saved */ if (!event) goto again; if (is_sched_switch) pid = sched_pid; trace_seq_printf(s, "%s-%d\n%s\n", pevent_data_comm_from_pid(ginfo->pevent, pid), pid, event->name); free_record(record); if (offset) return 1; /* * We need to stop the iterator, read last record. */ record = tracecmd_read_cpu_last(ginfo->handle, cpu); free_record(record); return 1; } static void cpu_plot_start(struct graph_info *ginfo, struct graph_plot *plot, unsigned long long time) { struct cpu_plot_info *cpu_info = plot->private; int cpu; cpu = cpu_info->cpu; cpu_info->last_time = 0ULL; cpu_info->last_pid = -1; free_record(cpu_info->last_record); cpu_info->last_record = NULL; } static void update_last_record(struct graph_info *ginfo, struct cpu_plot_info *cpu_info, struct pevent_record *record) { struct tracecmd_input *handle = ginfo->handle; struct pevent_record *trecord; int filter; int sched_pid; int orig_pid; int is_sched_switch; if (record) tracecmd_record_ref(record); else record = get_record_from_time(ginfo, cpu_info->cpu, ginfo->view_end_time); trecord = tracecmd_read_prev(handle, record); free_record(record); if (!trecord) return; filter = filter_record(ginfo, trecord, &orig_pid, &sched_pid, &is_sched_switch); cpu_info->last_pid = is_sched_switch ? sched_pid : orig_pid; cpu_info->last_record = trecord; cpu_info->last_time = trecord->ts; /* We moved the cursor, put it back */ trecord = tracecmd_read_data(handle, cpu_info->cpu); free_record(trecord); } static int cpu_plot_event(struct graph_info *ginfo, struct graph_plot *plot, struct pevent_record *record, struct plot_info *info) { struct cpu_plot_info *cpu_info = plot->private; int sched_pid; int orig_pid; int is_sched_switch; int filter; int box_filter; int pid; int cpu; int ret = 1; cpu = cpu_info->cpu; if (!record) { if (!cpu_info->last_record) update_last_record(ginfo, cpu_info, record); /* Finish a box if the last record was not idle */ if (cpu_info->last_pid > 0) { info->box = TRUE; info->bstart = cpu_info->last_time; info->bend = ginfo->view_end_time; info->bcolor = hash_pid(cpu_info->last_pid); } if (cpu_info->last_record) { free_record(cpu_info->last_record); cpu_info->last_record = NULL; } return 0; } /* * If last record is NULL, then it may exist off the * viewable range. Search to see if one exists. */ if (!cpu_info->last_record) update_last_record(ginfo, cpu_info, record); free_record(cpu_info->last_record); cpu_info->last_record = record; tracecmd_record_ref(record); cpu = cpu_info->cpu; filter = filter_record(ginfo, record, &orig_pid, &sched_pid, &is_sched_switch); /* set pid to record, or next task on sched_switch */ pid = is_sched_switch ? sched_pid : orig_pid; if (cpu_info->last_pid != pid) { if (cpu_info->last_pid < 0) { /* if we hit a sched switch, use the original pid for box*/ if (is_sched_switch) cpu_info->last_pid = orig_pid; else cpu_info->last_pid = pid; /* Box should always use the original pid (prev in sched_switch) */ box_filter = trace_graph_filter_on_task(ginfo, orig_pid); } else box_filter = trace_graph_filter_on_task(ginfo, cpu_info->last_pid); if (!box_filter && cpu_info->last_pid) { info->bcolor = hash_pid(cpu_info->last_pid); info->box = TRUE; info->bstart = cpu_info->last_time; info->bend = record->ts; } cpu_info->last_time = record->ts; } if (!filter && !trace_graph_filter_on_event(ginfo, record)) { info->line = TRUE; info->ltime = record->ts; info->lcolor = hash_pid(pid); } cpu_info->last_pid = pid; if (record->ts > ginfo->view_end_time) ret = 0; return ret; } static struct pevent_record * find_record_on_cpu(struct graph_info *ginfo, gint cpu, guint64 time) { struct pevent_record *record = NULL; guint64 offset = 0; tracecmd_set_cpu_to_timestamp(ginfo->handle, cpu, time); do { if (record) { offset = record->offset; free_record(record); } record = tracecmd_read_data(ginfo->handle, cpu); } while (record && record->ts <= (time - 1 / ginfo->resolution)); if (record) { if (record->ts > (time + 1 / ginfo->resolution) && offset) { free_record(record); record = tracecmd_read_at(ginfo->handle, offset, NULL); } } return record; } static struct pevent_record * cpu_plot_find_record(struct graph_info *ginfo, struct graph_plot *plot, unsigned long long time) { struct cpu_plot_info *cpu_info = plot->private; int cpu; cpu = cpu_info->cpu; return find_record_on_cpu(ginfo, cpu, time); } int cpu_plot_display_info(struct graph_info *ginfo, struct graph_plot *plot, struct trace_seq *s, unsigned long long time) { struct cpu_plot_info *cpu_info = plot->private; struct event_format *event; struct pevent_record *record; struct pevent *pevent; unsigned long sec, usec; const char *comm; int type; int pid; int cpu; int ret = 0; cpu = cpu_info->cpu; record = find_record_on_cpu(ginfo, cpu, time); if (!record) { /* try last record */ record = tracecmd_read_cpu_last(ginfo->handle, cpu); if (record && record->ts < time) { if (!trace_graph_check_sched_switch(ginfo, record, &pid, &comm)) { pid = pevent_data_pid(ginfo->pevent, record); comm = pevent_data_comm_from_pid(ginfo->pevent, pid); } convert_nano(record->ts, &sec, &usec); trace_seq_printf(s, "%lu.%06lu", sec, usec); if (pid) trace_seq_printf(s, " %s-%d", comm, pid); else trace_seq_puts(s, " "); ret = 1; } free_record(record); return ret; } convert_nano(record->ts, &sec, &usec); pevent = ginfo->pevent; pid = pevent_data_pid(ginfo->pevent, record); comm = pevent_data_comm_from_pid(ginfo->pevent, pid); if (record->ts > time - 2/ginfo->resolution && record->ts < time + 2/ginfo->resolution) { type = pevent_data_type(pevent, record); event = pevent_data_event_from_type(pevent, type); if (event) { trace_seq_puts(s, event->name); trace_seq_putc(s, '\n'); pevent_data_lat_fmt(pevent, s, record); trace_seq_putc(s, '\n'); pevent_event_info(s, event, record); trace_seq_putc(s, '\n'); } else trace_seq_printf(s, "UNKNOW EVENT %d\n", type); } else { if (record->ts < time) trace_graph_check_sched_switch(ginfo, record, &pid, &comm); } trace_seq_printf(s, "%lu.%06lu", sec, usec); if (pid) trace_seq_printf(s, " %s-%d", comm, pid); else trace_seq_puts(s, " "); free_record(record); return 1; } static void cpu_plot_destroy(struct graph_info *ginfo, struct graph_plot *plot) { struct cpu_plot_info *cpu_info = plot->private; trace_graph_plot_remove_cpu(ginfo, plot, cpu_info->cpu); free_record(cpu_info->last_record); free(cpu_info); } static const struct plot_callbacks cpu_plot_cb = { .match_time = cpu_plot_match_time, .plot_event = cpu_plot_event, .start = cpu_plot_start, .display_last_event = cpu_plot_display_last_event, .find_record = cpu_plot_find_record, .display_info = cpu_plot_display_info, .destroy = cpu_plot_destroy }; static void add_cpu_plot(struct graph_info *ginfo, gint cpu) { struct cpu_plot_info *cpu_info; struct graph_plot *plot; char label[100]; cpu_info = malloc_or_die(sizeof(*cpu_info)); memset(cpu_info, 0, sizeof(*cpu_info)); cpu_info->cpu = cpu; snprintf(label, 100, "CPU %d", cpu); plot = trace_graph_plot_append(ginfo, label, PLOT_TYPE_CPU, &cpu_plot_cb, cpu_info); trace_graph_plot_add_cpu(ginfo, plot, cpu); } void graph_plot_cpus_update_callback(gboolean accept, gboolean all_cpus, guint64 *selected_cpu_mask, gpointer data) { struct graph_info *ginfo = data; struct cpu_plot_info *cpu_info; struct graph_plot *plot; gboolean old_all_cpus; guint64 *old_cpu_mask; int i; if (!accept) return; /* Get the current status */ graph_plot_cpus_plotted(ginfo, &old_all_cpus, &old_cpu_mask); if (selected_cpu_mask && cpus_equal(old_cpu_mask, selected_cpu_mask, ginfo->cpus)) { /* Nothing to do */ g_free(old_cpu_mask); return; } if (!all_cpus) { /* * Remove any plots not selected. * Go backwards, since removing a plot shifts the * array from current position back. */ for (i = ginfo->plots - 1; i >= 0; i--) { plot = ginfo->plot_array[i]; if (plot->type != PLOT_TYPE_CPU) continue; cpu_info = plot->private; if (!cpu_isset(selected_cpu_mask, cpu_info->cpu)) trace_graph_plot_remove(ginfo, plot); } } /* Now add any plots not set */ for (i = 0; i < ginfo->cpus; i++) { if (!all_cpus && !cpu_isset(selected_cpu_mask, i)) continue; if (cpu_isset(old_cpu_mask, i)) continue; add_cpu_plot(ginfo, i); } g_free(old_cpu_mask); trace_graph_refresh(ginfo); } /** * graph_plot_cpus_plotted - return what CPUs are plotted * @ginfo: the graph info structure * @all_cpus: returns true if all CPUS are currently plotted * @cpu_mask: returns an allocated mask of what cpus are set * * @cpu_mask must be freed with g_free() after this is called. */ void graph_plot_cpus_plotted(struct graph_info *ginfo, gboolean *all_cpus, guint64 **cpu_mask) { struct cpu_plot_info *cpu_info; struct graph_plot *plot; int i; *cpu_mask = g_new0(guint64, (ginfo->cpus >> 6) + 1); g_assert(*cpu_mask); for (i = 0; i < ginfo->plots; i++) { plot = ginfo->plot_array[i]; if (plot->type != PLOT_TYPE_CPU) continue; cpu_info = plot->private; cpu_set(*cpu_mask, cpu_info->cpu); } *all_cpus = cpu_weight(*cpu_mask, ginfo->cpus) == ginfo->cpus ? TRUE : FALSE; } void graph_plot_init_cpus(struct graph_info *ginfo, int cpus) { long cpu; for (cpu = 0; cpu < cpus; cpu++) add_cpu_plot(ginfo, cpu); } trace-cmd-2.5.3/trace-plot-task.c000066400000000000000000000512121246701203100165330ustar00rootroot00000000000000/* * Copyright (C) 2010 Red Hat Inc, Steven Rostedt * * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; version 2 of the License (not later!) * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; if not, see * * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ */ #include #include "trace-graph.h" #include "trace-filter.h" #define RED 0xff #define GREEN (0xff<<16) struct task_plot_info { int pid; struct cpu_data *cpu_data; struct pevent_record **last_records; unsigned long long last_time; unsigned long long wake_time; unsigned long long display_wake_time; int wake_color; int last_cpu; }; static void convert_nano(unsigned long long time, unsigned long *sec, unsigned long *usec) { *sec = time / 1000000000ULL; *usec = (time / 1000) % 1000000; } static gint hash_pid(gint val) { /* idle always gets black */ if (!val) return 0; return trace_hash(val); } static int hash_cpu(int cpu) { cpu = (cpu << 3) + cpu * 21; return trace_hash(cpu); } static gboolean is_running(struct graph_info *ginfo, struct pevent_record *record) { unsigned long long val; int id; id = pevent_data_type(ginfo->pevent, record); if (id != ginfo->event_sched_switch_id) return FALSE; pevent_read_number_field(ginfo->event_prev_state, record->data, &val); return val ? FALSE : TRUE; } static gboolean record_matches_pid(struct graph_info *ginfo, struct pevent_record *record, int match_pid, int *pid, int *sched_pid, gboolean *is_sched, gboolean *wakeup) { const char *comm; *is_sched = FALSE; *wakeup = FALSE; *pid = pevent_data_pid(ginfo->pevent, record); *sched_pid = *pid; if (trace_graph_check_sched_switch(ginfo, record, sched_pid, &comm)) { if (*pid == match_pid || *sched_pid == match_pid) { *is_sched = TRUE; return TRUE; } } if (trace_graph_check_sched_wakeup(ginfo, record, sched_pid)) { if (*sched_pid == match_pid) { *wakeup = TRUE; return TRUE; } } if (*pid == match_pid) return TRUE; return FALSE; } static void set_cpu_to_time(int cpu, struct graph_info *ginfo, unsigned long long time) { struct pevent_record *record; tracecmd_set_cpu_to_timestamp(ginfo->handle, cpu, time); while ((record = tracecmd_read_data(ginfo->handle, cpu))) { if (record->ts >= time) break; free_record(record); } if (record) { tracecmd_set_cursor(ginfo->handle, cpu, record->offset); free_record(record); } else tracecmd_set_cpu_to_timestamp(ginfo->handle, cpu, time); } static void set_cpus_to_time(struct graph_info *ginfo, unsigned long long time) { int cpu; for (cpu = 0; cpu < ginfo->cpus; cpu++) set_cpu_to_time(cpu, ginfo, time); } static int task_plot_match_time(struct graph_info *ginfo, struct graph_plot *plot, unsigned long long time) { struct task_plot_info *task_info = plot->private; struct pevent_record *record = NULL; gboolean is_wakeup; gboolean is_sched; gboolean match; int rec_pid; int sched_pid; int next_cpu; int pid; int ret = 0; pid = task_info->pid; set_cpus_to_time(ginfo, time); do { free_record(record); record = tracecmd_read_next_data(ginfo->handle, &next_cpu); if (!record) return 0; match = record_matches_pid(ginfo, record, pid, &rec_pid, &sched_pid, &is_sched, &is_wakeup); /* Use +1 to make sure we have a match first */ } while ((!match && record->ts < time + 1) || (match && record->ts < time)); if (record && record->ts == time) ret = 1; free_record(record); return ret; } struct offset_cache { guint64 *offsets; }; static struct offset_cache *save_offsets(struct graph_info *ginfo) { struct offset_cache *offsets; struct pevent_record *record; int cpu; offsets = malloc_or_die(sizeof(*offsets)); offsets->offsets = malloc_or_die(sizeof(*offsets->offsets) * ginfo->cpus); memset(offsets->offsets, 0, sizeof(*offsets->offsets) * ginfo->cpus); for (cpu = 0; cpu < ginfo->cpus; cpu++) { record = tracecmd_peek_data(ginfo->handle, cpu); if (record) offsets->offsets[cpu] = record->offset; } return offsets; } static void restore_offsets(struct graph_info *ginfo, struct offset_cache *offsets) { struct pevent_record *record; int cpu; for (cpu = 0; cpu < ginfo->cpus; cpu++) { if (offsets->offsets[cpu]) tracecmd_set_cursor(ginfo->handle, cpu, offsets->offsets[cpu]); else { /* end of cpu, make sure it stays the end */ record = tracecmd_read_cpu_last(ginfo->handle, cpu); free_record(record); } } free(offsets->offsets); free(offsets); } static struct pevent_record * find_record(struct graph_info *ginfo, gint pid, guint64 time) { struct pevent_record *record = NULL; gboolean is_wakeup; gboolean is_sched; gboolean match; int sched_pid; int rec_pid; int next_cpu; set_cpus_to_time(ginfo, time); do { free_record(record); record = tracecmd_read_next_data(ginfo->handle, &next_cpu); if (!record) return NULL; match = record_matches_pid(ginfo, record, pid, &rec_pid, &sched_pid, &is_sched, &is_wakeup); /* Use +1 to make sure we have a match first */ } while (!(record->ts > time && match)); return record; } static int task_plot_display_last_event(struct graph_info *ginfo, struct graph_plot *plot, struct trace_seq *s, unsigned long long time) { struct task_plot_info *task_info = plot->private; struct event_format *event; struct pevent_record *record; struct offset_cache *offsets; gboolean is_sched; gboolean is_wakeup; int sched_pid; int rec_pid; int pid; int type; pid = task_info->pid; /* * Get the next record so we know can save its offset and * reset the cursor, not to mess up the plotting */ offsets = save_offsets(ginfo); record = find_record(ginfo, pid, time); restore_offsets(ginfo, offsets); if (!record) return 0; record_matches_pid(ginfo, record, pid, &rec_pid, &sched_pid, &is_sched, &is_wakeup); if (is_sched) { if (sched_pid == pid) { if (task_info->display_wake_time) { trace_seq_printf(s, "sched_switch\n" "CPU %d: lat: %.3fus\n", record->cpu, (double)(record->ts - task_info->display_wake_time) / 1000.0); task_info->display_wake_time = 0; } else { trace_seq_printf(s, "sched_switch\n" "CPU %d\n", record->cpu); } } else { trace_seq_printf(s, "sched_switch\n" "CPU %d %s-%d\n", record->cpu, pevent_data_comm_from_pid(ginfo->pevent, pid), pid); } } else { /* Must have the record we want */ type = pevent_data_type(ginfo->pevent, record); event = pevent_data_event_from_type(ginfo->pevent, type); if (pid == rec_pid) trace_seq_printf(s, "CPU %d\n%s\n", record->cpu, event->name); else trace_seq_printf(s, "%s-%d\n%s\n", pevent_data_comm_from_pid(ginfo->pevent, rec_pid), rec_pid, event->name); } free_record(record); return 1; } static void task_plot_start(struct graph_info *ginfo, struct graph_plot *plot, unsigned long long time) { struct task_plot_info *task_info = plot->private; memset(task_info->last_records, 0, sizeof(struct pevent_record *) * ginfo->cpus); task_info->last_time = 0ULL; task_info->last_cpu = -1; task_info->wake_time = 0ULL; task_info->display_wake_time = 0ULL; } static void update_last_record(struct graph_info *ginfo, struct task_plot_info *task_info, struct pevent_record *record) { struct tracecmd_input *handle = ginfo->handle; struct pevent_record *trecord, *t2record; struct pevent_record *saved; unsigned long long ts; int sched_pid; int pid; int rec_pid; int is_wakeup; int is_sched; int this_cpu; int cpu; pid = task_info->pid; if (record) { ts = record->ts; this_cpu = record->cpu; } else { ts = ginfo->view_end_time; this_cpu = -1; } for (cpu = 0; cpu < ginfo->cpus; cpu++) { if (task_info->last_records[cpu]) continue; if (cpu == this_cpu) { static int once; trecord = tracecmd_read_prev(handle, record); /* Set cpu cursor back to what it was */ saved = tracecmd_read_data(handle, cpu); if (!once && saved->offset != record->offset) { once++; warning("failed to reset cursor!"); } free_record(saved); } else { static int once; saved = tracecmd_read_data(handle, cpu); set_cpu_to_time(cpu, ginfo, ts); t2record = tracecmd_read_data(handle, cpu); trecord = tracecmd_read_prev(handle, t2record); free_record(t2record); /* reset cursor back to what it was */ if (saved) { tracecmd_set_cursor(handle, cpu, saved->offset); free_record(saved); } else { saved = tracecmd_read_data(handle, cpu); if (!once && saved) { once++; warning("failed to reset cursor to end!"); } /* saved should always be NULL */ free_record(saved); } } if (!trecord) continue; if (record_matches_pid(ginfo, trecord, pid, &rec_pid, &sched_pid, &is_sched, &is_wakeup) && !is_wakeup && (!is_sched || (is_sched && sched_pid == pid))) { task_info->last_records[cpu] = trecord; task_info->last_cpu = trecord->cpu; task_info->last_time = trecord->ts; break; } free_record(trecord); } } static int task_plot_event(struct graph_info *ginfo, struct graph_plot *plot, struct pevent_record *record, struct plot_info *info) { struct task_plot_info *task_info = plot->private; gboolean match; int sched_pid; int rec_pid; int is_wakeup; int is_sched; int pid; int cpu; pid = task_info->pid; if (!record) { update_last_record(ginfo, task_info, record); /* no more records, finish a box if one was started */ if (task_info->last_cpu >= 0) { info->box = TRUE; info->bstart = task_info->last_time; info->bend = ginfo->view_end_time; info->bcolor = hash_cpu(task_info->last_cpu); } for (cpu = 0; cpu < ginfo->cpus; cpu++) { free_record(task_info->last_records[cpu]); task_info->last_records[cpu] = NULL; } return 0; } match = record_matches_pid(ginfo, record, pid, &rec_pid, &sched_pid, &is_sched, &is_wakeup); if (!match && record->cpu != task_info->last_cpu) { if (!task_info->last_records[record->cpu]) { task_info->last_records[record->cpu] = record; tracecmd_record_ref(record); } return 0; } if (match) { info->line = TRUE; info->lcolor = hash_pid(rec_pid); info->ltime = record->ts; /* * Is this our first match? * * If last record is NULL, then it may exist off the * viewable range. Search to see if one exists, and if * it is the record we want to match. */ update_last_record(ginfo, task_info, record); if (is_wakeup) { /* Wake up but not task */ info->ltime = hash_pid(rec_pid); /* Another task ? */ if (task_info->last_cpu == record->cpu) { info->box = TRUE; info->bcolor = hash_cpu(task_info->last_cpu); info->bstart = task_info->last_time; info->bend = record->ts; task_info->last_cpu = -1; } task_info->wake_time = record->ts; task_info->wake_color = GREEN; task_info->display_wake_time = record->ts; return 1; } if (task_info->last_cpu != record->cpu) { if (task_info->last_cpu >= 0) { /* Switched CPUs */ info->box = TRUE; info->bcolor = hash_cpu(task_info->last_cpu); info->bstart = task_info->last_time; info->bend = record->ts; } task_info->last_time = record->ts; } task_info->last_cpu = record->cpu; if (is_sched) { if (rec_pid != pid) { /* Just got scheduled in */ task_info->last_cpu = record->cpu; task_info->last_time = record->ts; if (task_info->wake_time) { info->box = TRUE; info->bfill = FALSE; info->bstart = task_info->wake_time; info->bend = record->ts; info->bcolor = task_info->wake_color; } else task_info->wake_time = 0; } else if (!info->box) { /* just got scheduled out */ info->box = TRUE; info->bcolor = hash_cpu(task_info->last_cpu); info->bstart = task_info->last_time; info->bend = record->ts; task_info->last_cpu = -1; if (is_running(ginfo, record)) { task_info->wake_time = record->ts; task_info->wake_color = RED; } else task_info->wake_time = 0; } else task_info->wake_time = 0; } else task_info->wake_time = 0; return 1; } cpu = record->cpu; if (!task_info->last_records[cpu]) { task_info->last_records[cpu] = record; tracecmd_record_ref(record); } /* not a match, and on the last CPU, scheduled out? */ if (task_info->last_cpu >= 0) { info->box = TRUE; info->bcolor = hash_cpu(task_info->last_cpu); info->bstart = task_info->last_time; info->bend = record->ts; task_info->last_cpu = -1; } return 1; } static struct pevent_record * task_plot_find_record(struct graph_info *ginfo, struct graph_plot *plot, unsigned long long time) { struct task_plot_info *task_info = plot->private; int pid; pid = task_info->pid; return find_record(ginfo, pid, time); } #define MAX_SEARCH 20 static struct pevent_record * find_previous_record(struct graph_info *ginfo, struct pevent_record *start_record, int pid, int cpu) { struct pevent_record *last_record = start_record; struct pevent_record *record; gboolean match; gboolean is_sched; gboolean is_wakeup; gint rec_pid; gint sched_pid; int count = 0; if (last_record) last_record->ref_count++; else last_record = tracecmd_read_cpu_last(ginfo->handle, cpu); while ((record = tracecmd_read_prev(ginfo->handle, last_record))) { count++; match = record_matches_pid(ginfo, record, pid, &rec_pid, &sched_pid, &is_sched, &is_wakeup); if (match) break; free_record(last_record); if (count > MAX_SEARCH) { free_record(record); return NULL; } last_record = record; } free_record(last_record); return record; } static struct pevent_record * get_display_record(struct graph_info *ginfo, int pid, unsigned long long time) { struct pevent_record *record; struct pevent_record **records; unsigned long long ts; int next_cpu; int cpu; record = find_record(ginfo, pid, time); /* If the time is right at this record, use it */ if (record && record->ts < time + (1 / ginfo->resolution)) return record; if (record) { tracecmd_set_cursor(ginfo->handle, record->cpu, record->offset); free_record(record); } /* find a previous record */ records = malloc_or_die(sizeof(*records) * ginfo->cpus); for (cpu = 0; cpu < ginfo->cpus; cpu++) { record = tracecmd_read_data(ginfo->handle, cpu); records[cpu] = find_previous_record(ginfo, record, pid, cpu); free_record(record); } record = NULL; for (;;) { ts = 0; next_cpu = -1; for (cpu = 0; cpu < ginfo->cpus; cpu++) { if (!records[cpu]) continue; if (records[cpu]->ts > ts) { ts = records[cpu]->ts; next_cpu = cpu; } } if (next_cpu < 0) break; if (records[next_cpu]->ts < time + (2 / ginfo->resolution)) { record = records[next_cpu]; break; } record = find_previous_record(ginfo, records[next_cpu], pid, next_cpu); free_record(records[next_cpu]); records[next_cpu] = record; record = NULL; } for (cpu = 0; cpu < ginfo->cpus; cpu++) { if (records[cpu] == record) continue; free_record(records[cpu]); } free(records); return record; } int task_plot_display_info(struct graph_info *ginfo, struct graph_plot *plot, struct trace_seq *s, unsigned long long time) { struct task_plot_info *task_info = plot->private; struct event_format *event; struct pevent_record *record; struct pevent *pevent; unsigned long sec, usec; const char *comm; int cpu; int type; int sched_pid = -1; int pid; pid = task_info->pid; record = get_display_record(ginfo, pid, time); if (!record) return 0; pevent = ginfo->pevent; pid = pevent_data_pid(ginfo->pevent, record); cpu = record->cpu; convert_nano(record->ts, &sec, &usec); if (record->ts > time - 2/ginfo->resolution && record->ts < time + 2/ginfo->resolution) { type = pevent_data_type(pevent, record); event = pevent_data_event_from_type(pevent, type); if (event) { trace_seq_puts(s, event->name); trace_seq_putc(s, '\n'); pevent_data_lat_fmt(pevent, s, record); trace_seq_putc(s, '\n'); pevent_event_info(s, event, record); trace_seq_putc(s, '\n'); } else trace_seq_printf(s, "UNKNOW EVENT %d\n", type); } trace_graph_check_sched_switch(ginfo, record, &sched_pid, &comm); trace_seq_printf(s, "%lu.%06lu", sec, usec); if (pid == task_info->pid || sched_pid == task_info->pid) trace_seq_printf(s, " CPU: %03d", cpu); free_record(record); return 1; } void task_plot_destroy(struct graph_info *ginfo, struct graph_plot *plot) { struct task_plot_info *task_info = plot->private; trace_graph_plot_remove_all_recs(ginfo, plot); free(task_info->last_records); free(task_info); } static const struct plot_callbacks task_plot_cb = { .match_time = task_plot_match_time, .plot_event = task_plot_event, .start = task_plot_start, .display_last_event = task_plot_display_last_event, .find_record = task_plot_find_record, .display_info = task_plot_display_info, .destroy = task_plot_destroy }; /** * graph_plot_task_plotted - return what tasks are plotted * @ginfo: the graph info structure * @plotted: returns an allocated array of gints holding the pids. * the last pid is -1, NULL, if none are. * * @plotted must be freed with free() after this is called. */ void graph_plot_task_plotted(struct graph_info *ginfo, gint **plotted) { struct task_plot_info *task_info; struct graph_plot *plot; int count = 0; int i; *plotted = NULL; for (i = 0; i < ginfo->plots; i++) { plot = ginfo->plot_array[i]; if (plot->type != PLOT_TYPE_TASK) continue; task_info = plot->private; trace_array_add(plotted, &count, task_info->pid); } } void graph_plot_task_update_callback(gboolean accept, gint *selected, gint *non_select, gpointer data) { struct graph_info *ginfo = data; struct task_plot_info *task_info; struct graph_plot *plot; gint select_size = 0; gint *ptr; int i; if (!accept) return; /* The selected and non_select are sorted */ if (selected) { for (i = 0; selected[i] >= 0; i++) ; select_size = i; } /* * Remove and add task plots. * Go backwards, since removing a plot shifts the * array from current position back. */ for (i = ginfo->plots - 1; i >= 0; i--) { plot = ginfo->plot_array[i]; if (plot->type != PLOT_TYPE_TASK) continue; /* If non are selected, then remove all */ if (!select_size) { trace_graph_plot_remove(ginfo, plot); continue; } task_info = plot->private; ptr = bsearch(&task_info->pid, selected, select_size, sizeof(gint), id_cmp); if (ptr) { /* * This plot plot already exists, remove it * from the selected array. */ memmove(ptr, ptr + 1, (unsigned long)(selected + select_size) - (unsigned long)(ptr + 1)); select_size--; continue; } /* Remove the plot */ trace_graph_plot_remove(ginfo, plot); } /* Now add any plots that need to be added */ for (i = 0; i < select_size; i++) graph_plot_task(ginfo, selected[i], ginfo->plots); trace_graph_refresh(ginfo); } void graph_plot_init_tasks(struct graph_info *ginfo) { struct task_plot_info *task_info; char label[100]; struct pevent_record *record; int pid; /* Just for testing */ record = tracecmd_read_cpu_first(ginfo->handle, 0); while (record) { pid = pevent_data_pid(ginfo->pevent, record); free_record(record); if (pid) break; record = tracecmd_read_data(ginfo->handle, 0); } task_info = malloc_or_die(sizeof(*task_info)); task_info->last_records = malloc_or_die(sizeof(struct pevent_record *) * ginfo->cpus); task_info->pid = pid; snprintf(label, 100, "TASK %d", pid); trace_graph_plot_insert(ginfo, 1, label, PLOT_TYPE_TASK, &task_plot_cb, task_info); } void graph_plot_task(struct graph_info *ginfo, int pid, int pos) { struct task_plot_info *task_info; struct graph_plot *plot; const char *comm; char *label; int len; task_info = malloc_or_die(sizeof(*task_info)); task_info->last_records = malloc_or_die(sizeof(struct pevent_record *) * ginfo->cpus); task_info->pid = pid; comm = pevent_data_comm_from_pid(ginfo->pevent, pid); len = strlen(comm) + 100; label = malloc_or_die(len); snprintf(label, len, "%s-%d", comm, pid); plot = trace_graph_plot_insert(ginfo, pos, label, PLOT_TYPE_TASK, &task_plot_cb, task_info); free(label); trace_graph_plot_add_all_recs(ginfo, plot); } trace-cmd-2.5.3/trace-plot.c000066400000000000000000000205511246701203100155750ustar00rootroot00000000000000/* * Copyright (C) 2010 Red Hat Inc, Steven Rostedt * * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; version 2 of the License (not later!) * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; if not, see * * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ */ #include #include "trace-graph.h" void trace_graph_plot_free(struct graph_info *ginfo) { struct graph_plot **array; int plots; int i; /* copy the plot_array since the removing plots will modify it */ array = malloc_or_die(sizeof(*array) * ginfo->plots); memcpy(array, ginfo->plot_array, sizeof(*array) * ginfo->plots); plots = ginfo->plots; for (i = 0; i < plots; i++) trace_graph_plot_remove(ginfo, array[i]); free(array); if (ginfo->plot_array) { free(ginfo->plot_array); ginfo->plot_array = NULL; }; ginfo->plots = 0; } void trace_graph_plot_init(struct graph_info *ginfo) { ginfo->plots = 0; ginfo->plot_array = NULL; } static struct graph_plot * allocate_plot(struct graph_info *ginfo, const char *label, const struct plot_callbacks *cb, void *data) { struct graph_plot *plot; char *name; name = strdup(label); if (!name) die("Unable to allocate label"); plot = malloc_or_die(sizeof(*plot)); memset(plot, 0, sizeof(*plot)); plot->label = name; plot->cb = cb; plot->private = data; return plot; } struct graph_plot * trace_graph_plot_append(struct graph_info *ginfo, const char *label, enum graph_plot_type type, const struct plot_callbacks *cb, void *data) { struct graph_plot *plot; plot = allocate_plot(ginfo, label, cb, data); plot->type = type; plot->pos = ginfo->plots; if (!ginfo->plots) { ginfo->plot_array = malloc_or_die(sizeof(ginfo->plot_array[0])); ginfo->plot_array[0] = plot; } else { ginfo->plot_array = realloc(ginfo->plot_array, sizeof(ginfo->plot_array[0]) * (ginfo->plots + 1)); if (!ginfo->plot_array) die("unable to resize plot array"); ginfo->plot_array[ginfo->plots] = plot; } ginfo->plots++; return plot; } struct graph_plot * trace_graph_plot_insert(struct graph_info *ginfo, int pos, const char *label, enum graph_plot_type type, const struct plot_callbacks *cb, void *data) { struct graph_plot *plot; int i; if (pos >= ginfo->plots) return trace_graph_plot_append(ginfo, label, type, cb, data); if (pos < 0) pos = 0; plot = allocate_plot(ginfo, label, cb, data); plot->pos = pos; plot->type = type; ginfo->plot_array = realloc(ginfo->plot_array, sizeof(ginfo->plot_array[0]) * (ginfo->plots + 1)); if (!ginfo->plot_array) die("unable to resize plot array"); memmove(&ginfo->plot_array[pos+1], &ginfo->plot_array[pos], sizeof(ginfo->plot_array[0]) * (ginfo->plots - pos)); ginfo->plot_array[pos] = plot; ginfo->plots++; /* Update the new positions */ for (i = pos + 1; i < ginfo->plots; i++) ginfo->plot_array[i]->pos = i; return plot; } void trace_graph_plot_remove(struct graph_info *ginfo, struct graph_plot *plot) { int pos = plot->pos; int i; if (plot->cb->destroy) plot->cb->destroy(ginfo, plot); free(plot->label); free(plot); ginfo->plots--; if (ginfo->plots) { memmove(&ginfo->plot_array[pos], &ginfo->plot_array[pos+1], sizeof(ginfo->plot_array[0]) * (ginfo->plots - pos)); /* Update the new positions */ for (i = pos; i < ginfo->plots; i++) ginfo->plot_array[i]->pos = i; } else { free(ginfo->plot_array); ginfo->plot_array = NULL; } } static struct plot_hash *find_hash(struct plot_hash **array, gint val) { struct plot_hash *hash; gint key; key = trace_hash(val) % PLOT_HASH_SIZE; for (hash = array[key]; hash; hash = hash->next) { if (hash->val == val) return hash; } return NULL; } static void add_hash(struct plot_hash **array, struct graph_plot *plot, gint val) { struct plot_hash *hash; struct plot_list *list; gint key; list = malloc_or_die(sizeof(*list)); hash = find_hash(array, val); if (!hash) { hash = g_new0(typeof(*hash), 1); g_assert(hash); key = trace_hash(val) % PLOT_HASH_SIZE; hash->next = array[key]; hash->val = val; array[key] = hash; } list->next = hash->plots; list->plot = plot; hash->plots = list; } static void remove_hash(struct plot_hash **array, struct graph_plot *plot, gint val) { struct plot_hash *hash, **phash; struct plot_list **pplot; struct plot_list *list; gint key; hash = find_hash(array, val); pplot = &hash->plots; while ((list = *pplot)) { if (list->plot == plot) { *pplot = list->next; free(list); break; } pplot = &list->next; } if (hash->plots) return; /* remove this hash item */ key = trace_hash(val) % PLOT_HASH_SIZE; phash = &array[key]; while (*phash) { if (*phash == hash) { *phash = hash->next; break; } phash = &(*phash)->next; } g_free(hash); } struct plot_hash * trace_graph_plot_find_task(struct graph_info *ginfo, gint task) { return find_hash(ginfo->task_hash, task); } void trace_graph_plot_add_task(struct graph_info *ginfo, struct graph_plot *plot, gint task) { add_hash(ginfo->task_hash, plot, task); ginfo->nr_task_hash++; } void trace_graph_plot_remove_task(struct graph_info *ginfo, struct graph_plot *plot, gint task) { remove_hash(ginfo->task_hash, plot, task); ginfo->nr_task_hash--; } struct plot_hash * trace_graph_plot_find_cpu(struct graph_info *ginfo, gint cpu) { return find_hash(ginfo->cpu_hash, cpu); } void trace_graph_plot_add_cpu(struct graph_info *ginfo, struct graph_plot *plot, gint cpu) { add_hash(ginfo->cpu_hash, plot, cpu); } void trace_graph_plot_remove_cpu(struct graph_info *ginfo, struct graph_plot *plot, gint cpu) { remove_hash(ginfo->cpu_hash, plot, cpu); } void trace_graph_plot_add_all_recs(struct graph_info *ginfo, struct graph_plot *plot) { struct plot_list *list; list = malloc_or_die(sizeof(*list)); list->next = ginfo->all_recs; list->plot = plot; ginfo->all_recs = list; } void trace_graph_plot_remove_all_recs(struct graph_info *ginfo, struct graph_plot *plot) { struct plot_list **pplot; struct plot_list *list; pplot = &ginfo->all_recs; while ((list = *pplot)) { if (list->plot == plot) { *pplot = list->next; free(list); break; } pplot = &list->next; } } /* Plot callback helpers */ int trace_graph_plot_match_time(struct graph_info *ginfo, struct graph_plot *plot, unsigned long long time) { if (!plot->cb->match_time) return 0; return plot->cb->match_time(ginfo, plot, time); } void trace_graph_plot_start(struct graph_info *ginfo, struct graph_plot *plot, unsigned long long time) { if (!plot->cb->start) return; return plot->cb->start(ginfo, plot, time); } int trace_graph_plot_event(struct graph_info *ginfo, struct graph_plot *plot, struct pevent_record *record, struct plot_info *info) { info->line = FALSE; info->box = FALSE; info->bfill = TRUE; if (!plot->cb->plot_event) return 0; return plot->cb->plot_event(ginfo, plot, record, info); } void trace_graph_plot_end(struct graph_info *ginfo, struct graph_plot *plot) { if (!plot->cb->end) return; return plot->cb->end(ginfo, plot); } int trace_graph_plot_display_last_event(struct graph_info *ginfo, struct graph_plot *plot, struct trace_seq *s, unsigned long long time) { if (!plot->cb->display_last_event) return 0; return plot->cb->display_last_event(ginfo, plot, s, time); } struct pevent_record * trace_graph_plot_find_record(struct graph_info *ginfo, struct graph_plot *plot, unsigned long long time) { if (!plot->cb->find_record) return 0; return plot->cb->find_record(ginfo, plot, time); } int trace_graph_plot_display_info(struct graph_info *ginfo, struct graph_plot *plot, struct trace_seq *s, unsigned long long time) { if (!plot->cb->display_info) return 0; return plot->cb->display_info(ginfo, plot, s, time); } trace-cmd-2.5.3/trace-profile.c000066400000000000000000001405351246701203100162640ustar00rootroot00000000000000/* * Copyright (C) 2014 Red Hat Inc, Steven Rostedt * * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; version 2 of the License (not later!) * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; if not, see * * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ */ /** FIXME: Convert numbers based on machine and file */ #define _LARGEFILE64_SOURCE #include #include #include #include "trace-local.h" #include "trace-hash.h" #define TASK_STATE_TO_CHAR_STR "RSDTtXZxKWP" #define TASK_STATE_MAX 1024 #define task_from_item(item) container_of(item, struct task_data, hash) #define start_from_item(item) container_of(item, struct start_data, hash) #define event_from_item(item) container_of(item, struct event_hash, hash) #define stack_from_item(item) container_of(item, struct stack_data, hash) #define event_data_from_item(item) container_of(item, struct event_data, hash) static unsigned long long nsecs_per_sec(unsigned long long ts) { return ts / NSECS_PER_SEC; } static unsigned long long mod_to_usec(unsigned long long ts) { return ((ts % NSECS_PER_SEC) + NSECS_PER_USEC / 2) / NSECS_PER_USEC; } struct handle_data; struct event_hash; struct event_data; typedef void (*event_data_print)(struct trace_seq *s, struct event_hash *hash); typedef int (*handle_event_func)(struct handle_data *h, unsigned long long pid, struct event_data *data, struct pevent_record *record, int cpu); enum event_data_type { EVENT_TYPE_UNDEFINED, EVENT_TYPE_STACK, EVENT_TYPE_SCHED_SWITCH, EVENT_TYPE_WAKEUP, EVENT_TYPE_FUNC, EVENT_TYPE_SYSCALL, EVENT_TYPE_IRQ, EVENT_TYPE_SOFTIRQ, EVENT_TYPE_SOFTIRQ_RAISE, EVENT_TYPE_PROCESS_EXEC, EVENT_TYPE_USER_MATE, }; struct event_data { struct trace_hash_item hash; int id; int trace; struct event_format *event; struct event_data *end; struct event_data *start; struct format_field *pid_field; struct format_field *start_match_field; /* match with start */ struct format_field *end_match_field; /* match with end */ struct format_field *data_field; /* optional */ event_data_print print_func; handle_event_func handle_event; void *private; int migrate; /* start/end pairs can migrate cpus */ enum event_data_type type; }; struct stack_data { struct trace_hash_item hash; unsigned long long count; unsigned long long time; unsigned long long time_min; unsigned long long ts_min; unsigned long long time_max; unsigned long long ts_max; unsigned long long time_avg; unsigned long size; char caller[]; }; struct stack_holder { unsigned long size; void *caller; struct pevent_record *record; }; struct start_data { struct trace_hash_item hash; struct event_data *event_data; struct list_head list; struct task_data *task; unsigned long long timestamp; unsigned long long search_val; unsigned long long val; int cpu; struct stack_holder stack; }; struct event_hash { struct trace_hash_item hash; struct event_data *event_data; unsigned long long search_val; unsigned long long val; unsigned long long count; unsigned long long time_total; unsigned long long time_avg; unsigned long long time_max; unsigned long long ts_max; unsigned long long time_min; unsigned long long ts_min; unsigned long long time_std; unsigned long long last_time; struct trace_hash stacks; }; struct task_data { struct trace_hash_item hash; int pid; int sleeping; char *comm; struct trace_hash start_hash; struct trace_hash event_hash; struct task_data *proxy; struct start_data *last_start; struct event_hash *last_event; struct pevent_record *last_stack; struct handle_data *handle; }; struct cpu_info { int current; }; struct sched_switch_data { struct format_field *prev_state; int match_state; }; struct handle_data { struct handle_data *next; struct tracecmd_input *handle; struct pevent *pevent; struct trace_hash events; struct cpu_info **cpu_data; struct format_field *common_pid; struct format_field *wakeup_comm; struct format_field *switch_prev_comm; struct format_field *switch_next_comm; struct sched_switch_data sched_switch_blocked; struct sched_switch_data sched_switch_preempt; struct trace_hash task_hash; struct list_head *cpu_starts; struct list_head migrate_starts; int cpus; }; static struct handle_data *handles; static struct event_data *stacktrace_event; static struct start_data * add_start(struct task_data *task, struct event_data *event_data, struct pevent_record *record, unsigned long long search_val, unsigned long long val) { struct start_data *start; start = malloc_or_die(sizeof(*start)); memset(start, 0, sizeof(*start)); start->hash.key = trace_hash(search_val); start->search_val = search_val; start->val = val; start->timestamp = record->ts; start->event_data = event_data; start->cpu = record->cpu; start->task = task; trace_hash_add(&task->start_hash, &start->hash); if (event_data->migrate) list_add(&start->list, &task->handle->migrate_starts); else list_add(&start->list, &task->handle->cpu_starts[record->cpu]); return start; } struct event_data_match { struct event_data *event_data; unsigned long long search_val; unsigned long long val; }; static int match_start(struct trace_hash_item *item, void *data) { struct start_data *start = start_from_item(item); struct event_data_match *edata = data; return start->event_data == edata->event_data && start->search_val == edata->search_val; } static int match_event(struct trace_hash_item *item, void *data) { struct event_data_match *edata = data; struct event_hash *event = event_from_item(item); return event->event_data == edata->event_data && event->search_val == edata->search_val && event->val == edata->val; } static struct event_hash * find_event_hash(struct task_data *task, struct event_data_match *edata) { struct event_hash *event_hash; struct trace_hash_item *item; unsigned long long key; key = (unsigned long)edata->event_data + (unsigned long)edata->search_val + (unsigned long)edata->val; key = trace_hash(key); item = trace_hash_find(&task->event_hash, key, match_event, edata); if (item) return event_from_item(item); event_hash = malloc_or_die(sizeof(*event_hash)); memset(event_hash, 0, sizeof(*event_hash)); event_hash->event_data = edata->event_data; event_hash->search_val = edata->search_val; event_hash->val = edata->val; event_hash->hash.key = key; trace_hash_init(&event_hash->stacks, 32); trace_hash_add(&task->event_hash, &event_hash->hash); return event_hash; } static struct event_hash * find_start_event_hash(struct task_data *task, struct event_data *event_data, struct start_data *start) { struct event_data_match edata; edata.event_data = event_data; edata.search_val = start->search_val; edata.val = start->val; return find_event_hash(task, &edata); } static struct start_data * find_start(struct task_data *task, struct event_data *event_data, unsigned long long search_val) { unsigned long long key = trace_hash(search_val); struct event_data_match edata; void *data = &edata; struct trace_hash_item *item; struct start_data *start; edata.event_data = event_data; edata.search_val = search_val; item = trace_hash_find(&task->start_hash, key, match_start, data); if (!item) return NULL; start = start_from_item(item); return start; } struct stack_match { void *caller; unsigned long size; }; static int match_stack(struct trace_hash_item *item, void *data) { struct stack_data *stack = stack_from_item(item); struct stack_match *match = data; if (match->size != stack->size) return 0; return memcmp(stack->caller, match->caller, stack->size) == 0; } static void add_event_stack(struct event_hash *event_hash, void *caller, unsigned long size, unsigned long long time, unsigned long long ts) { unsigned long long key; struct stack_data *stack; struct stack_match match; struct trace_hash_item *item; int i; match.caller = caller; match.size = size; if (size < sizeof(int)) die("Stack size of less than sizeof(int)??"); for (key = 0, i = 0; i <= size - sizeof(int); i += sizeof(int)) key += trace_hash(*(int *)(caller + i)); item = trace_hash_find(&event_hash->stacks, key, match_stack, &match); if (!item) { stack = malloc_or_die(sizeof(*stack) + size); memset(stack, 0, sizeof(*stack)); memcpy(&stack->caller, caller, size); stack->size = size; stack->hash.key = key; trace_hash_add(&event_hash->stacks, &stack->hash); } else stack = stack_from_item(item); stack->count++; stack->time += time; if (stack->count == 1 || time < stack->time_min) { stack->time_min = time; stack->ts_min = ts; } if (time > stack->time_max) { stack->time_max = time; stack->ts_max = ts; } } static void free_start(struct start_data *start) { if (start->task->last_start == start) start->task->last_start = NULL; if (start->stack.record) free_record(start->stack.record); trace_hash_del(&start->hash); list_del(&start->list); free(start); } static struct event_hash * add_and_free_start(struct task_data *task, struct start_data *start, struct event_data *event_data, unsigned long long ts) { struct event_hash *event_hash; long long delta; delta = ts - start->timestamp; /* * It's possible on a live trace, because of timestamps being * different on different CPUs, we can go back in time. When * that happens, just zero out the delta. */ if (delta < 0) delta = 0; event_hash = find_start_event_hash(task, event_data, start); event_hash->count++; event_hash->time_total += delta; event_hash->last_time = delta; if (delta > event_hash->time_max) { event_hash->time_max = delta; event_hash->ts_max = ts; } if (event_hash->count == 1 || delta < event_hash->time_min) { event_hash->time_min = delta; event_hash->ts_min = ts; } if (start->stack.record) { unsigned long size; void *caller; size = start->stack.size; caller = start->stack.caller; add_event_stack(event_hash, caller, size, delta, start->stack.record->ts); free_record(start->stack.record); start->stack.record = NULL; } free_start(start); return event_hash; } static struct event_hash * find_and_update_start(struct task_data *task, struct event_data *event_data, unsigned long long ts, unsigned long long search_val) { struct start_data *start; start = find_start(task, event_data, search_val); if (!start) return NULL; return add_and_free_start(task, start, event_data, ts); } static int match_task(struct trace_hash_item *item, void *data) { struct task_data *task = task_from_item(item); int pid = *(unsigned long *)data; return task->pid == pid; } static struct task_data * add_task(struct handle_data *h, int pid) { unsigned long long key = trace_hash(pid); struct task_data *task; task = malloc_or_die(sizeof(*task)); memset(task, 0, sizeof(*task)); task->pid = pid; task->hash.key = key; trace_hash_add(&h->task_hash, &task->hash); task->handle = h; trace_hash_init(&task->start_hash, 16); trace_hash_init(&task->event_hash, 32); return task; } static struct task_data * find_task(struct handle_data *h, int pid) { unsigned long long key = trace_hash(pid); struct trace_hash_item *item; static struct task_data *last_task; void *data = (unsigned long *)&pid; if (last_task && last_task->pid == pid) return last_task; item = trace_hash_find(&h->task_hash, key, match_task, data); if (item) last_task = task_from_item(item); else last_task = add_task(h, pid); return last_task; } static void add_task_comm(struct task_data *task, struct format_field *field, struct pevent_record *record) { const char *comm; task->comm = malloc_or_die(field->size + 1); comm = record->data + field->offset; memcpy(task->comm, comm, field->size); task->comm[field->size] = 0; } /* Account for tasks that don't have starts */ static void account_task(struct task_data *task, struct event_data *event_data, struct pevent_record *record) { struct event_data_match edata; struct event_hash *event_hash; struct task_data *proxy = NULL; unsigned long long search_val = 0; unsigned long long val = 0; unsigned long long pid; /* * If an event has the pid_field set, then find that task for * this event instead. Let this task proxy for it to handle * stack traces on this event. */ if (event_data->pid_field) { pevent_read_number_field(event_data->pid_field, record->data, &pid); proxy = task; task = find_task(task->handle, pid); proxy->proxy = task; } /* * If data_field is defined, use that for val, * if the start_field is defined, use that for search_val. */ if (event_data->data_field) { pevent_read_number_field(event_data->data_field, record->data, &val); } if (event_data->start_match_field) { pevent_read_number_field(event_data->start_match_field, record->data, &search_val); } edata.event_data = event_data; edata.search_val = val; edata.val = val; event_hash = find_event_hash(task, &edata); event_hash->count++; task->last_event = event_hash; } static struct task_data * find_event_task(struct handle_data *h, struct event_data *event_data, struct pevent_record *record, unsigned long long pid) { /* If pid_field is defined, use that to find the task */ if (event_data->pid_field) pevent_read_number_field(event_data->pid_field, record->data, &pid); return find_task(h, pid); } static struct task_data * handle_end_event(struct handle_data *h, struct event_data *event_data, struct pevent_record *record, int pid) { struct event_hash *event_hash; struct task_data *task; unsigned long long val; task = find_event_task(h, event_data, record, pid); pevent_read_number_field(event_data->start_match_field, record->data, &val); event_hash = find_and_update_start(task, event_data->start, record->ts, val); task->last_start = NULL; task->last_event = event_hash; return task; } static struct task_data * handle_start_event(struct handle_data *h, struct event_data *event_data, struct pevent_record *record, unsigned long long pid) { struct start_data *start; struct task_data *task; unsigned long long val; task = find_event_task(h, event_data, record, pid); pevent_read_number_field(event_data->end_match_field, record->data, &val); start = add_start(task, event_data, record, val, val); task->last_start = start; task->last_event = NULL; return task; } static int handle_event_data(struct handle_data *h, unsigned long long pid, struct event_data *event_data, struct pevent_record *record, int cpu) { struct task_data *task = NULL; /* If this is the end of a event pair (start is set) */ if (event_data->start) task = handle_end_event(h, event_data, record, pid); /* If this is the start of a event pair (end is set) */ if (event_data->end) task = handle_start_event(h, event_data, record, pid); if (!task) { task = find_task(h, pid); task->proxy = NULL; task->last_start = NULL; task->last_event = NULL; account_task(task, event_data, record); } return 0; } static void handle_missed_events(struct handle_data *h, int cpu) { struct start_data *start; struct start_data *n; /* Clear all starts on this CPU */ list_for_each_entry_safe(start, n, &h->cpu_starts[cpu], list) { free_start(start); } /* Now clear all starts whose events can migrate */ list_for_each_entry_safe(start, n, &h->migrate_starts, list) { free_start(start); } } static int match_event_data(struct trace_hash_item *item, void *data) { struct event_data *event_data = event_data_from_item(item); int id = (int)(unsigned long)data; return event_data->id == id; } static struct event_data * find_event_data(struct handle_data *h, int id) { struct trace_hash_item *item; unsigned long long key = trace_hash(id); void *data = (void *)(unsigned long)id; item = trace_hash_find(&h->events, key, match_event_data, data); if (item) return event_data_from_item(item); return NULL; } int trace_profile_record(struct tracecmd_input *handle, struct pevent_record *record, int cpu) { static struct handle_data *last_handle; struct pevent_record *stack_record; struct event_data *event_data; struct task_data *task; struct handle_data *h; struct pevent *pevent; unsigned long long pid; int id; if (last_handle && last_handle->handle == handle) h = last_handle; else { for (h = handles; h; h = h->next) { if (h->handle == handle) break; } if (!h) die("Handle not found?"); last_handle = h; } if (record->missed_events) handle_missed_events(h, cpu); pevent = h->pevent; id = pevent_data_type(pevent, record); event_data = find_event_data(h, id); if (!event_data) return -1; /* Get this current PID */ pevent_read_number_field(h->common_pid, record->data, &pid); task = find_task(h, pid); stack_record = task->last_stack; if (event_data->handle_event) event_data->handle_event(h, pid, event_data, record, cpu); else handle_event_data(h, pid, event_data, record, cpu); /* If the last stack hasn't changed, free it */ if (stack_record && task->last_stack == stack_record) { free_record(stack_record); task->last_stack = NULL; } return 0; } static struct event_data * add_event(struct handle_data *h, const char *system, const char *event_name, enum event_data_type type) { struct event_format *event; struct event_data *event_data; event = pevent_find_event_by_name(h->pevent, system, event_name); if (!event) return NULL; if (!h->common_pid) { h->common_pid = pevent_find_common_field(event, "common_pid"); if (!h->common_pid) die("No 'common_pid' found in event"); } event_data = malloc_or_die(sizeof(*event_data)); memset(event_data, 0, sizeof(*event_data)); event_data->id = event->id; event_data->event = event; event_data->type = type; event_data->hash.key = trace_hash(event_data->event->id); trace_hash_add(&h->events, &event_data->hash); return event_data; } static void mate_events(struct handle_data *h, struct event_data *start, const char *pid_field, const char *end_match_field, struct event_data *end, const char *start_match_field, int migrate) { start->end = end; end->start = start; if (pid_field) { start->pid_field = pevent_find_field(start->event, pid_field); if (!start->pid_field) die("Event: %s does not have field %s", start->event->name, pid_field); } /* Field to match with end */ start->end_match_field = pevent_find_field(start->event, end_match_field); if (!start->end_match_field) die("Event: %s does not have field %s", start->event->name, end_match_field); /* Field to match with start */ end->start_match_field = pevent_find_field(end->event, start_match_field); if (!end->start_match_field) die("Event: %s does not have field %s", end->event->name, start_match_field); start->migrate = migrate; } /** * tracecmd_mate_events - match events to profile against * @handle: The input handle where the events exist. * @start_event: The event that starts the transaction * @pid_field: Use this over common_pid (may be NULL to use common_pid) * @end_match_field: The field that matches the end events @start_match_field * @end_event: The event that ends the transaction * @start_match_field: The end event field that matches start's @end_match_field * @migrate: Can the transaction switch CPUs? 1 for yes, 0 for no */ void tracecmd_mate_events(struct tracecmd_input *handle, struct event_format *start_event, const char *pid_field, const char *end_match_field, struct event_format *end_event, const char *start_match_field, int migrate) { struct handle_data *h; struct event_data *start; struct event_data *end; for (h = handles; h; h = h->next) { if (h->handle == handle) break; } if (!h) die("Handle not found for trace profile"); start = add_event(h, start_event->system, start_event->name, EVENT_TYPE_USER_MATE); end = add_event(h, end_event->system, end_event->name, EVENT_TYPE_USER_MATE); mate_events(h, start, pid_field, end_match_field, end, start_match_field, migrate); } static void func_print(struct trace_seq *s, struct event_hash *event_hash) { const char *func; func = pevent_find_function(event_hash->event_data->event->pevent, event_hash->val); if (func) trace_seq_printf(s, "func: %s()", func); else trace_seq_printf(s, "func: 0x%llx", event_hash->val); } static void print_int(struct trace_seq *s, struct event_hash *event_hash) { trace_seq_printf(s, "%s:%d", event_hash->event_data->event->name, (int)event_hash->val); } /* From Linux include/linux/interrupt.h */ #define SOFTIRQS \ C(HI), \ C(TIMER), \ C(NET_TX), \ C(NET_RX), \ C(BLOCK), \ C(BLOCK_IOPOLL), \ C(TASKLET), \ C(SCHED), \ C(HRTIMER), \ C(RCU), \ C(NR), #undef C #define C(a) a##_SOFTIRQ enum { SOFTIRQS }; #undef C #define C(a) #a static const char *softirq_map[] = { SOFTIRQS }; static void softirq_print(struct trace_seq *s, struct event_hash *event_hash) { int softirq = (int)event_hash->val; if (softirq < NR_SOFTIRQ) trace_seq_printf(s, "%s:%s", event_hash->event_data->event->name, softirq_map[softirq]); else trace_seq_printf(s, "%s:%d", event_hash->event_data->event->name, softirq); } static void sched_switch_print(struct trace_seq *s, struct event_hash *event_hash) { const char states[] = TASK_STATE_TO_CHAR_STR; int i; trace_seq_printf(s, "%s:", event_hash->event_data->event->name); if (event_hash->val) { int val = event_hash->val; for (i = 0; val && i < sizeof(states) - 1; i++, val >>= 1) { if (val & 1) trace_seq_putc(s, states[i+1]); } } else trace_seq_putc(s, 'R'); } static int handle_sched_switch_event(struct handle_data *h, unsigned long long pid, struct event_data *event_data, struct pevent_record *record, int cpu) { struct task_data *task; unsigned long long prev_pid; unsigned long long prev_state; unsigned long long next_pid; struct start_data *start; /* pid_field holds prev_pid, data_field holds prev_state */ pevent_read_number_field(event_data->pid_field, record->data, &prev_pid); pevent_read_number_field(event_data->data_field, record->data, &prev_state); /* only care about real states */ prev_state &= TASK_STATE_MAX - 1; /* end_match_field holds next_pid */ pevent_read_number_field(event_data->end_match_field, record->data, &next_pid); task = find_task(h, prev_pid); if (!task->comm) add_task_comm(task, h->switch_prev_comm, record); if (prev_state) task->sleeping = 1; else task->sleeping = 0; /* task is being scheduled out. prev_state tells why */ start = add_start(task, event_data, record, prev_pid, prev_state); task->last_start = start; task->last_event = NULL; task = find_task(h, next_pid); if (!task->comm) add_task_comm(task, h->switch_next_comm, record); /* * If the next task was blocked, it required a wakeup to * restart, and there should be one. * But if it was preempted, we look for the previous sched switch. * Unfortunately, we have to look for both types of events as * we do not know why next_pid scheduled out. * * event_data->start holds the sched_wakeup event data. */ find_and_update_start(task, event_data->start, record->ts, next_pid); /* Look for this task if it was preempted (no wakeup found). */ find_and_update_start(task, event_data, record->ts, next_pid); return 0; } static int handle_stacktrace_event(struct handle_data *h, unsigned long long pid, struct event_data *event_data, struct pevent_record *record, int cpu) { struct task_data *orig_task; struct task_data *proxy; struct task_data *task; unsigned long long size; struct event_hash *event_hash; struct start_data *start; void *caller; task = find_task(h, pid); if (task->last_stack) { free_record(task->last_stack); task->last_stack = NULL; } if ((proxy = task->proxy)) { task->proxy = NULL; orig_task = task; task = proxy; } if (!task->last_start && !task->last_event) { /* * Save this stack in case function graph needs it. * Need the original task, not a proxy. */ if (proxy) task = orig_task; tracecmd_record_ref(record); task->last_stack = record; return 0; } /* * start_match_field holds the size. * data_field holds the caller location. */ size = record->size - event_data->data_field->offset; caller = record->data + event_data->data_field->offset; /* * If there's a "start" then don't add the stack until * it finds a matching "end". */ if ((start = task->last_start)) { tracecmd_record_ref(record); start->stack.record = record; start->stack.size = size; start->stack.caller = caller; task->last_start = NULL; task->last_event = NULL; return 0; } event_hash = task->last_event; task->last_event = NULL; add_event_stack(event_hash, caller, size, event_hash->last_time, record->ts); return 0; } static int handle_fgraph_entry_event(struct handle_data *h, unsigned long long pid, struct event_data *event_data, struct pevent_record *record, int cpu) { unsigned long long size; struct start_data *start; struct task_data *task; void *caller; task = handle_start_event(h, event_data, record, pid); /* * If a stack trace hasn't been used for a previous task, * then it could be a function trace that we can use for * the function graph. But stack traces come before the function * graph events (unfortunately). So we need to attach the previous * stack trace (if there is one) to this start event. */ if (task->last_stack) { start = task->last_start; record = task->last_stack; size = record->size - stacktrace_event->data_field->offset; caller = record->data + stacktrace_event->data_field->offset; start->stack.record = record; start->stack.size = size; start->stack.caller = caller; task->last_stack = NULL; task->last_event = NULL; } /* Do not map stacks after this event to this event */ task->last_start = NULL; return 0; } static int handle_fgraph_exit_event(struct handle_data *h, unsigned long long pid, struct event_data *event_data, struct pevent_record *record, int cpu) { struct task_data *task; task = handle_end_event(h, event_data, record, pid); /* Do not match stacks with function graph exit events */ task->last_event = NULL; return 0; } static int handle_process_exec(struct handle_data *h, unsigned long long pid, struct event_data *event_data, struct pevent_record *record, int cpu) { struct task_data *task; unsigned long long val; /* Task has execed, remove the comm for it */ if (event_data->data_field) { pevent_read_number_field(event_data->data_field, record->data, &val); pid = val; } task = find_task(h, pid); free(task->comm); task->comm = NULL; return 0; } static int handle_sched_wakeup_event(struct handle_data *h, unsigned long long pid, struct event_data *event_data, struct pevent_record *record, int cpu) { struct task_data *proxy; struct task_data *task = NULL; struct start_data *start; unsigned long long success; proxy = find_task(h, pid); /* If present, data_field holds "success" */ if (event_data->data_field) { pevent_read_number_field(event_data->data_field, record->data, &success); /* If not a successful wakeup, ignore this */ if (!success) return 0; } pevent_read_number_field(event_data->pid_field, record->data, &pid); task = find_task(h, pid); if (!task->comm) add_task_comm(task, h->wakeup_comm, record); /* if the task isn't sleeping, then ignore the wake up */ if (!task->sleeping) return 0; /* It's being woken up */ task->sleeping = 0; /* * We need the stack trace to be hooked to the woken up * task, not the waker. */ proxy->proxy = task; /* There should be a blocked schedule out of this task */ find_and_update_start(task, event_data->start, record->ts, pid); /* Set this up for timing how long the wakeup takes */ start = add_start(task, event_data, record, pid, pid); task->last_event = NULL; task->last_start = start; return 0; } void trace_init_profile(struct tracecmd_input *handle, struct hook_list *hook) { struct pevent *pevent = tracecmd_get_pevent(handle); struct event_format **events; struct format_field **fields; struct handle_data *h; struct event_data *event_data; struct event_data *sched_switch; struct event_data *sched_wakeup; struct event_data *irq_entry; struct event_data *irq_exit; struct event_data *softirq_entry; struct event_data *softirq_exit; struct event_data *softirq_raise; struct event_data *fgraph_entry; struct event_data *fgraph_exit; struct event_data *syscall_enter; struct event_data *syscall_exit; struct event_data *process_exec; struct event_data *start_event; struct event_data *end_event; int i; h = malloc_or_die(sizeof(*h)); memset(h, 0, sizeof(*h)); h->next = handles; handles = h; trace_hash_init(&h->task_hash, 1024); trace_hash_init(&h->events, 1024); h->handle = handle; h->pevent = pevent; h->cpus = tracecmd_cpus(handle); /* * For streaming profiling, cpus will not be set up yet. * In this case, we simply use the number of cpus on the * system. */ if (!h->cpus) h->cpus = count_cpus(); list_head_init(&h->migrate_starts); h->cpu_starts = malloc_or_die(sizeof(*h->cpu_starts) * h->cpus); for (i = 0; i < h->cpus; i++) list_head_init(&h->cpu_starts[i]); h->cpu_data = malloc_or_die(h->cpus * sizeof(*h->cpu_data)); memset(h->cpu_data, 0, h->cpus * sizeof(h->cpu_data)); irq_entry = add_event(h, "irq", "irq_handler_entry", EVENT_TYPE_IRQ); irq_exit = add_event(h, "irq", "irq_handler_exit", EVENT_TYPE_IRQ); softirq_entry = add_event(h, "irq", "softirq_entry", EVENT_TYPE_SOFTIRQ); softirq_exit = add_event(h, "irq", "softirq_exit", EVENT_TYPE_SOFTIRQ); softirq_raise = add_event(h, "irq", "softirq_raise", EVENT_TYPE_SOFTIRQ_RAISE); sched_wakeup = add_event(h, "sched", "sched_wakeup", EVENT_TYPE_WAKEUP); sched_switch = add_event(h, "sched", "sched_switch", EVENT_TYPE_SCHED_SWITCH); fgraph_entry = add_event(h, "ftrace", "funcgraph_entry", EVENT_TYPE_FUNC); fgraph_exit = add_event(h, "ftrace", "funcgraph_exit", EVENT_TYPE_FUNC); syscall_enter = add_event(h, "raw_syscalls", "sys_enter", EVENT_TYPE_SYSCALL); syscall_exit = add_event(h, "raw_syscalls", "sys_exit", EVENT_TYPE_SYSCALL); process_exec = add_event(h, "sched", "sched_process_exec", EVENT_TYPE_PROCESS_EXEC); stacktrace_event = add_event(h, "ftrace", "kernel_stack", EVENT_TYPE_STACK); if (stacktrace_event) { stacktrace_event->handle_event = handle_stacktrace_event; stacktrace_event->data_field = pevent_find_field(stacktrace_event->event, "caller"); if (!stacktrace_event->data_field) die("Event: %s does not have field caller", stacktrace_event->event->name); } if (process_exec) { process_exec->handle_event = handle_process_exec; process_exec->data_field = pevent_find_field(process_exec->event, "old_pid"); } if (sched_switch) { sched_switch->handle_event = handle_sched_switch_event; sched_switch->data_field = pevent_find_field(sched_switch->event, "prev_state"); if (!sched_switch->data_field) die("Event: %s does not have field prev_state", sched_switch->event->name); h->switch_prev_comm = pevent_find_field(sched_switch->event, "prev_comm"); if (!h->switch_prev_comm) die("Event: %s does not have field prev_comm", sched_switch->event->name); h->switch_next_comm = pevent_find_field(sched_switch->event, "next_comm"); if (!h->switch_next_comm) die("Event: %s does not have field next_comm", sched_switch->event->name); sched_switch->print_func = sched_switch_print; } if (sched_switch && sched_wakeup) { mate_events(h, sched_switch, "prev_pid", "next_pid", sched_wakeup, "pid", 1); mate_events(h, sched_wakeup, "pid", "pid", sched_switch, "prev_pid", 1); sched_wakeup->handle_event = handle_sched_wakeup_event; /* The 'success' field may or may not be present */ sched_wakeup->data_field = pevent_find_field(sched_wakeup->event, "success"); h->wakeup_comm = pevent_find_field(sched_wakeup->event, "comm"); if (!h->wakeup_comm) die("Event: %s does not have field comm", sched_wakeup->event->name); } if (irq_entry && irq_exit) mate_events(h, irq_entry, NULL, "irq", irq_exit, "irq", 0); if (softirq_entry) softirq_entry->print_func = softirq_print; if (softirq_exit) softirq_exit->print_func = softirq_print; if (softirq_raise) softirq_raise->print_func = softirq_print; if (softirq_entry && softirq_exit) mate_events(h, softirq_entry, NULL, "vec", softirq_exit, "vec", 0); if (softirq_entry && softirq_raise) mate_events(h, softirq_raise, NULL, "vec", softirq_entry, "vec", 0); if (fgraph_entry && fgraph_exit) { mate_events(h, fgraph_entry, NULL, "func", fgraph_exit, "func", 1); fgraph_entry->handle_event = handle_fgraph_entry_event; fgraph_exit->handle_event = handle_fgraph_exit_event; fgraph_entry->print_func = func_print; } if (syscall_enter && syscall_exit) { mate_events(h, syscall_enter, NULL, "id", syscall_exit, "id", 1); syscall_enter->print_func = print_int; syscall_exit->print_func = print_int; } events = pevent_list_events(pevent, EVENT_SORT_ID); if (!events) die("malloc"); /* Add some other events */ event_data = add_event(h, "ftrace", "function", EVENT_TYPE_FUNC); if (event_data) { event_data->data_field = pevent_find_field(event_data->event, "ip"); } /* Add any user defined hooks */ for (; hook; hook = hook->next) { start_event = add_event(h, hook->start_system, hook->start_event, EVENT_TYPE_USER_MATE); end_event = add_event(h, hook->end_system, hook->end_event, EVENT_TYPE_USER_MATE); if (!start_event) { warning("Event %s not found", hook->start_event); continue; } if (!end_event) { warning("Event %s not found", hook->end_event); continue; } mate_events(h, start_event, hook->pid, hook->start_match, end_event, hook->end_match, hook->migrate); } /* Now add any defined event that we haven't processed */ for (i = 0; events[i]; i++) { event_data = find_event_data(h, events[i]->id); if (event_data) continue; event_data = add_event(h, events[i]->system, events[i]->name, EVENT_TYPE_UNDEFINED); fields = pevent_event_fields(events[i]); if (!fields) die("malloc"); if (fields[0]) event_data->data_field = fields[0]; free(fields); } } static void output_event_stack(struct pevent *pevent, struct stack_data *stack) { int longsize = pevent_get_long_size(pevent); unsigned long long val; const char *func; unsigned long long stop = -1ULL; void *ptr; int i; if (longsize < 8) stop &= (1ULL << (longsize * 8)) - 1; if (stack->count) stack->time_avg = stack->time / stack->count; printf(" %lld total:%lld min:%lld(ts:%lld.%06lld) max:%lld(ts:%lld.%06lld) avg=%lld\n", stack->count, stack->time, stack->time_min, nsecs_per_sec(stack->ts_min), mod_to_usec(stack->ts_min), stack->time_max, nsecs_per_sec(stack->ts_max), mod_to_usec(stack->ts_max), stack->time_avg); for (i = 0; i < stack->size; i += longsize) { ptr = stack->caller + i; switch (longsize) { case 4: /* todo, read value from pevent */ val = *(unsigned int *)ptr; break; case 8: val = *(unsigned long long *)ptr; break; default: die("Strange long size %d", longsize); } if (val == stop) break; func = pevent_find_function(pevent, val); if (func) printf(" => %s (0x%llx)\n", func, val); else printf(" => 0x%llx\n", val); } } struct stack_chain { struct stack_chain *children; unsigned long long val; unsigned long long time; unsigned long long time_min; unsigned long long ts_min; unsigned long long time_max; unsigned long long ts_max; unsigned long long time_avg; unsigned long long count; int percent; int nr_children; }; static int compare_chains(const void *a, const void *b) { const struct stack_chain * A = a; const struct stack_chain * B = b; if (A->time > B->time) return -1; if (A->time < B->time) return 1; /* If stacks don't use time, then use count */ if (A->count > B->count) return -1; if (A->count < B->count) return 1; return 0; } static int calc_percent(unsigned long long val, unsigned long long total) { return (val * 100 + total / 2) / total; } static int stack_overflows(struct stack_data *stack, int longsize, int level) { return longsize * level > stack->size - longsize; } static unsigned long long stack_value(struct stack_data *stack, int longsize, int level) { void *ptr; ptr = &stack->caller[longsize * level]; return longsize == 8 ? *(u64 *)ptr : *(unsigned *)ptr; } static struct stack_chain * make_stack_chain(struct stack_data **stacks, int cnt, int longsize, int level, int *nr_children) { struct stack_chain *chain; unsigned long long total_time = 0; unsigned long long total_count = 0; unsigned long long time; unsigned long long time_min; unsigned long long ts_min; unsigned long long time_max; unsigned long long ts_max; unsigned long long count; unsigned long long stop = -1ULL; int nr_chains = 0; u64 last = 0; u64 val; int start; int i; int x; if (longsize < 8) stop &= (1ULL << (longsize * 8)) - 1; /* First find out how many diffs there are */ for (i = 0; i < cnt; i++) { if (stack_overflows(stacks[i], longsize, level)) continue; val = stack_value(stacks[i], longsize, level); if (val == stop) continue; if (!nr_chains || val != last) nr_chains++; last = val; } if (!nr_chains) { *nr_children = 0; return NULL; } chain = malloc_or_die(sizeof(*chain) * nr_chains); memset(chain, 0, sizeof(*chain) * nr_chains); x = 0; count = 0; start = 0; time = 0; time_min = 0; time_max = 0; for (i = 0; i < cnt; i++) { if (stack_overflows(stacks[i], longsize, level)) { start = i+1; continue; } val = stack_value(stacks[i], longsize, level); if (val == stop) { start = i+1; continue; } count += stacks[i]->count; time += stacks[i]->time; if (stacks[i]->time_max > time_max) { time_max = stacks[i]->time_max; ts_max = stacks[i]->ts_max; } if (i == start || stacks[i]->time_min < time_min) { time_min = stacks[i]->time_min; ts_min = stacks[i]->ts_min; } if (i == cnt - 1 || stack_overflows(stacks[i+1], longsize, level) || val != stack_value(stacks[i+1], longsize, level)) { total_time += time; total_count += count; chain[x].val = val; chain[x].time_avg = time / count; chain[x].count = count; chain[x].time = time; chain[x].time_min = time_min; chain[x].ts_min = ts_min; chain[x].time_max = time_max; chain[x].ts_max = ts_max; chain[x].children = make_stack_chain(&stacks[start], (i - start) + 1, longsize, level+1, &chain[x].nr_children); x++; start = i + 1; count = 0; time = 0; time_min = 0; time_max = 0; } } qsort(chain, nr_chains, sizeof(*chain), compare_chains); *nr_children = nr_chains; /* Should never happen */ if (!total_time && !total_count) return chain; /* Now calculate percentage */ time = 0; for (i = 0; i < nr_chains; i++) { if (total_time) chain[i].percent = calc_percent(chain[i].time, total_time); /* In case stacks don't have time */ else if (total_count) chain[i].percent = calc_percent(chain[i].count, total_count); } return chain; } static void free_chain(struct stack_chain *chain, int nr_chains) { int i; if (!chain) return; for (i = 0; i < nr_chains; i++) free_chain(chain[i].children, chain[i].nr_children); free(chain); } #define INDENT 5 static void print_indent(int level, unsigned long long mask) { char line; int p; for (p = 0; p < level + 1; p++) { if (mask & (1ULL << p)) line = '|'; else line = ' '; printf("%*c ", INDENT, line); } } static void print_chain_func(struct pevent *pevent, struct stack_chain *chain) { unsigned long long val = chain->val; const char *func; func = pevent_find_function(pevent, val); if (func) printf("%s (0x%llx)\n", func, val); else printf("0x%llx\n", val); } static void output_chain(struct pevent *pevent, struct stack_chain *chain, int level, int nr_chains, unsigned long long *mask) { struct stack_chain *child; int nr_children; int i; char line = '|'; if (!nr_chains) return; *mask |= (1ULL << (level + 1)); print_indent(level + 1, *mask); printf("\n"); for (i = 0; i < nr_chains; i++) { print_indent(level, *mask); printf("%*c ", INDENT, '+'); if (i == nr_chains - 1) { *mask &= ~(1ULL << (level + 1)); line = ' '; } print_chain_func(pevent, &chain[i]); print_indent(level, *mask); printf("%*c ", INDENT, line); printf(" %d%% (%lld)", chain[i].percent, chain[i].count); if (chain[i].time) printf(" time:%lld max:%lld(ts:%lld.%06lld) min:%lld(ts:%lld.%06lld) avg:%lld", chain[i].time, chain[i].time_max, nsecs_per_sec(chain[i].ts_max), mod_to_usec(chain[i].ts_max), chain[i].time_min, nsecs_per_sec(chain[i].ts_min), mod_to_usec(chain[i].ts_min), chain[i].time_avg); printf("\n"); for (child = chain[i].children, nr_children = chain[i].nr_children; child && nr_children == 1; nr_children = child->nr_children, child = child->children) { print_indent(level, *mask); printf("%*c ", INDENT, line); printf(" "); print_chain_func(pevent, child); } if (child) output_chain(pevent, child, level+1, nr_children, mask); print_indent(level + 1, *mask); printf("\n"); } *mask &= ~(1ULL << (level + 1)); print_indent(level, *mask); printf("\n"); } static int compare_stacks(const void *a, const void *b) { struct stack_data * const *A = a; struct stack_data * const *B = b; unsigned int sa, sb; int size; int i; /* only compare up to the smaller size of the two */ if ((*A)->size > (*B)->size) size = (*B)->size; else size = (*A)->size; for (i = 0; i < size; i += sizeof(sa)) { sa = *(unsigned *)&(*A)->caller[i]; sb = *(unsigned *)&(*B)->caller[i]; if (sa > sb) return 1; if (sa < sb) return -1; } /* They are the same up to size. Then bigger size wins */ if ((*A)->size > (*B)->size) return 1; if ((*A)->size < (*B)->size) return -1; return 0; } static void output_stacks(struct pevent *pevent, struct trace_hash *stack_hash) { struct trace_hash_item **bucket; struct trace_hash_item *item; struct stack_data **stacks; struct stack_chain *chain; unsigned long long mask = 0; int nr_chains; int longsize = pevent_get_long_size(pevent); int nr_stacks; int i; nr_stacks = 0; trace_hash_for_each_bucket(bucket, stack_hash) { trace_hash_for_each_item(item, bucket) { nr_stacks++; } } stacks = malloc_or_die(sizeof(*stacks) * nr_stacks); nr_stacks = 0; trace_hash_for_each_bucket(bucket, stack_hash) { trace_hash_for_each_item(item, bucket) { stacks[nr_stacks++] = stack_from_item(item); } } qsort(stacks, nr_stacks, sizeof(*stacks), compare_stacks); chain = make_stack_chain(stacks, nr_stacks, longsize, 0, &nr_chains); output_chain(pevent, chain, 0, nr_chains, &mask); if (0) for (i = 0; i < nr_stacks; i++) output_event_stack(pevent, stacks[i]); free(stacks); free_chain(chain, nr_chains); } static void output_event(struct event_hash *event_hash) { struct event_data *event_data = event_hash->event_data; struct pevent *pevent = event_data->event->pevent; struct trace_seq s; trace_seq_init(&s); if (event_data->print_func) event_data->print_func(&s, event_hash); else if (event_data->type == EVENT_TYPE_FUNC) func_print(&s, event_hash); else trace_seq_printf(&s, "%s:0x%llx", event_data->event->name, event_hash->val); trace_seq_terminate(&s); printf(" Event: %s (%lld)", s.buffer, event_hash->count); trace_seq_destroy(&s); if (event_hash->time_total) { event_hash->time_avg = event_hash->time_total / event_hash->count; printf(" Total: %lld Avg: %lld Max: %lld(ts:%lld.%06lld) Min:%lld(ts:%lld.%06lld)", event_hash->time_total, event_hash->time_avg, event_hash->time_max, nsecs_per_sec(event_hash->ts_max), mod_to_usec(event_hash->ts_max), event_hash->time_min, nsecs_per_sec(event_hash->ts_min), mod_to_usec(event_hash->ts_min)); } printf("\n"); output_stacks(pevent, &event_hash->stacks); } static int compare_events(const void *a, const void *b) { struct event_hash * const *A = a; struct event_hash * const *B = b; const struct event_data *event_data_a = (*A)->event_data; const struct event_data *event_data_b = (*B)->event_data; /* Schedule switch goes first */ if (event_data_a->type == EVENT_TYPE_SCHED_SWITCH) { if (event_data_b->type != EVENT_TYPE_SCHED_SWITCH) return -1; /* lower the state the better */ if ((*A)->val > (*B)->val) return 1; if ((*A)->val < (*B)->val) return -1; return 0; } else if (event_data_b->type == EVENT_TYPE_SCHED_SWITCH) return 1; /* Wakeups are next */ if (event_data_a->type == EVENT_TYPE_WAKEUP) { if (event_data_b->type != EVENT_TYPE_WAKEUP) return -1; return 0; } else if (event_data_b->type == EVENT_TYPE_WAKEUP) return 1; if (event_data_a->id > event_data_b->id) return 1; if (event_data_a->id < event_data_b->id) return -1; return 0; } static void output_task(struct handle_data *h, struct task_data *task) { struct trace_hash_item **bucket; struct trace_hash_item *item; struct event_hash **events; const char *comm; int nr_events = 0; int i; if (task->comm) comm = task->comm; else comm = pevent_data_comm_from_pid(h->pevent, task->pid); printf("\ntask: %s-%d\n", comm, task->pid); trace_hash_for_each_bucket(bucket, &task->event_hash) { trace_hash_for_each_item(item, bucket) { nr_events++; } } events = malloc_or_die(sizeof(*events) * nr_events); i = 0; trace_hash_for_each_bucket(bucket, &task->event_hash) { trace_hash_for_each_item(item, bucket) { events[i++] = event_from_item(item); } } qsort(events, nr_events, sizeof(*events), compare_events); for (i = 0; i < nr_events; i++) output_event(events[i]); free(events); } static int compare_tasks(const void *a, const void *b) { struct task_data * const *A = a; struct task_data * const *B = b; if ((*A)->pid > (*B)->pid) return 1; else if ((*A)->pid < (*B)->pid) return -1; return 0; } static void free_event_hash(struct event_hash *event_hash) { struct trace_hash_item **bucket; struct trace_hash_item *item; struct stack_data *stack; trace_hash_for_each_bucket(bucket, &event_hash->stacks) { trace_hash_while_item(item, bucket) { stack = stack_from_item(item); trace_hash_del(&stack->hash); free(stack); } } trace_hash_free(&event_hash->stacks); free(event_hash); } static void free_task(struct task_data *task) { struct trace_hash_item **bucket; struct trace_hash_item *item; struct start_data *start; struct event_hash *event_hash; free(task->comm); trace_hash_for_each_bucket(bucket, &task->start_hash) { trace_hash_while_item(item, bucket) { start = start_from_item(item); if (start->stack.record) free_record(start->stack.record); list_del(&start->list); trace_hash_del(item); free(start); } } trace_hash_free(&task->start_hash); trace_hash_for_each_bucket(bucket, &task->event_hash) { trace_hash_while_item(item, bucket) { event_hash = event_from_item(item); trace_hash_del(item); free_event_hash(event_hash); } } trace_hash_free(&task->event_hash); if (task->last_stack) free_record(task->last_stack); free(task); } static void output_handle(struct handle_data *h) { struct trace_hash_item **bucket; struct trace_hash_item *item; struct task_data **tasks; int nr_tasks = 0; int i; trace_hash_for_each_bucket(bucket, &h->task_hash) { trace_hash_for_each_item(item, bucket) { nr_tasks++; } } tasks = malloc_or_die(sizeof(*tasks) * nr_tasks); nr_tasks = 0; trace_hash_for_each_bucket(bucket, &h->task_hash) { trace_hash_while_item(item, bucket) { tasks[nr_tasks++] = task_from_item(item); trace_hash_del(item); } } qsort(tasks, nr_tasks, sizeof(*tasks), compare_tasks); for (i = 0; i < nr_tasks; i++) { output_task(h, tasks[i]); free_task(tasks[i]); } free(tasks); } int trace_profile(void) { struct handle_data *h; for (h = handles; h; h = h->next) { output_handle(h); trace_hash_free(&h->task_hash); } return 0; } trace-cmd-2.5.3/trace-read.c000066400000000000000000001047521246701203100155400ustar00rootroot00000000000000/* * Copyright (C) 2009, 2010 Red Hat Inc, Steven Rostedt * * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; version 2 of the License (not later!) * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; if not, see * * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ */ #define _LARGEFILE64_SOURCE #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include "trace-local.h" #include "trace-hash.h" #include "list.h" static struct filter_str { struct filter_str *next; char *filter; int neg; } *filter_strings; static struct filter_str **filter_next = &filter_strings; struct filter { struct filter *next; struct event_filter *filter; }; struct event_str { struct event_str *next; const char *event; }; struct handle_list { struct list_head list; struct tracecmd_input *handle; const char *file; int cpus; int done; struct pevent_record *record; struct filter *event_filters; struct filter *event_filter_out; }; static struct list_head handle_list; struct input_files { struct list_head list; const char *file; }; static struct list_head input_files; struct pid_list { struct pid_list *next; char *pid; int free; } *pid_list; struct pid_list *comm_list; static unsigned int page_size; static int input_fd; static const char *default_input_file = "trace.dat"; static const char *input_file; static int multi_inputs; static int max_file_size; static int instances; static int *filter_cpus; static int nr_filter_cpus; static int show_wakeup; static int wakeup_id; static int wakeup_new_id; static int sched_id; static int stacktrace_id; static int profile; static int buffer_breaks = 0; static struct format_field *wakeup_task; static struct format_field *wakeup_success; static struct format_field *wakeup_new_task; static struct format_field *wakeup_new_success; static struct format_field *sched_task; static struct format_field *sched_prio; static unsigned long long total_wakeup_lat; static unsigned long wakeup_lat_count; static unsigned long long total_wakeup_rt_lat; static unsigned long wakeup_rt_lat_count; struct wakeup_info { struct trace_hash_item hash; unsigned long long start; int pid; }; static struct hook_list *hooks; static struct hook_list *last_hook; #define WAKEUP_HASH_SIZE 1024 static struct trace_hash wakeup_hash; /* Debug variables for testing tracecmd_read_at */ #define TEST_READ_AT 0 #if TEST_READ_AT #define DO_TEST static off64_t test_read_at_offset; static int test_read_at_copy = 100; static int test_read_at_index; static void show_test(struct tracecmd_input *handle) { struct pevent *pevent; struct pevent_record *record; struct trace_seq s; int cpu; if (!test_read_at_offset) { printf("\nNO RECORD COPIED\n"); return; } pevent = tracecmd_get_pevent(handle); record = tracecmd_read_at(handle, test_read_at_offset, &cpu); printf("\nHERE'S THE COPY RECORD\n"); trace_seq_init(&s); pevent_print_event(pevent, &s, cpu, record->data, record->size, record->ts); trace_seq_do_printf(&s); trace_seq_destroy(&s); printf("\n"); free_record(record); } static void test_save(struct pevent_record *record, int cpu) { if (test_read_at_index++ == test_read_at_copy) { test_read_at_offset = record->offset; printf("\nUSING THIS RECORD\n"); } } #endif /* TEST_READ_AT */ /* Debug variables for testing tracecmd_set_cpu_at_timestamp */ #define TEST_AT_TIMESTAMP 0 #if TEST_AT_TIMESTAMP #define DO_TEST static unsigned long long test_at_timestamp_ts; static int test_at_timestamp_copy = 100; static int test_at_timestamp_cpu = -1; static int test_at_timestamp_index; static void show_test(struct tracecmd_input *handle) { struct pevent *pevent; struct pevent_record *record; struct trace_seq s; int cpu = test_at_timestamp_cpu; if (!test_at_timestamp_ts) { printf("\nNO RECORD COPIED\n"); return; } pevent = tracecmd_get_pevent(handle); if (tracecmd_set_cpu_to_timestamp(handle, cpu, test_at_timestamp_ts)) return; record = tracecmd_read_data(handle, cpu); printf("\nHERE'S THE COPY RECORD with page %p offset=%p\n", (void *)(record->offset & ~(page_size - 1)), (void *)record->offset); trace_seq_init(&s); pevent_print_event(pevent, &s, cpu, record->data, record->size, record->ts); trace_seq_do_printf(&s); trace_seq_destroy(&s); printf("\n"); free_record(record); } static void test_save(struct pevent_record *record, int cpu) { if (test_at_timestamp_index++ == test_at_timestamp_copy) { test_at_timestamp_ts = record->ts; test_at_timestamp_cpu = cpu; printf("\nUSING THIS RECORD page=%p offset=%p\n", (void *)(record->offset & ~(page_size - 1)), (void *)record->offset); } } #endif /* TEST_AT_TIMESTAMP */ #define TEST_FIRST_LAST 0 #if TEST_FIRST_LAST #define DO_TEST static void show_test(struct tracecmd_input *handle) { struct pevent *pevent; struct pevent_record *record; struct trace_seq s; int cpu = 0; pevent = tracecmd_get_pevent(handle); record = tracecmd_read_cpu_first(handle, cpu); if (!record) { printf("No first record?\n"); return; } printf("\nHERE'S THE FIRST RECORD with offset %p\n", (void *)record->offset); trace_seq_init(&s); pevent_print_event(pevent, &s, cpu, record->data, record->size, record->ts); trace_seq_do_printf(&s); trace_seq_destroy(&s); printf("\n"); free_record(record); record = tracecmd_read_cpu_last(handle, cpu); if (!record) { printf("No last record?\n"); return; } printf("\nHERE'S THE LAST RECORD with offset %p\n", (void *)record->offset); trace_seq_init(&s); pevent_print_event(pevent, &s, cpu, record->data, record->size, record->ts); trace_seq_do_printf(&s); trace_seq_destroy(&s); printf("\n"); free_record(record); } static void test_save(struct pevent_record *record, int cpu) { } #endif /* TEST_FIRST_LAST */ #ifndef DO_TEST static void show_test(struct tracecmd_input *handle) { } static void test_save(struct pevent_record *record, int cpu) { } #endif static void add_input(const char *file) { struct input_files *item; item = malloc_or_die(sizeof(*item)); item->file = file; list_add_tail(&item->list, &input_files); } static void add_handle(struct tracecmd_input *handle, const char *file) { struct handle_list *item; item = malloc_or_die(sizeof(*item)); memset(item, 0, sizeof(*item)); item->handle = handle; if (file) { item->file = file + strlen(file); /* we want just the base name */ while (item->file >= file && *item->file != '/') item->file--; item->file++; if (strlen(item->file) > max_file_size) max_file_size = strlen(item->file); } list_add_tail(&item->list, &handle_list); } static void free_inputs(void) { struct input_files *item; while (!list_empty(&input_files)) { item = container_of(input_files.next, struct input_files, list); list_del(&item->list); free(item); } } static void free_handles(void) { struct handle_list *item; while (!list_empty(&handle_list)) { item = container_of(handle_list.next, struct handle_list, list); list_del(&item->list); free(item); } } static void add_filter(const char *filter, int neg) { struct filter_str *ftr; ftr = malloc_or_die(sizeof(*ftr)); ftr->filter = strdup(filter); if (!ftr->filter) die("malloc"); ftr->next = NULL; ftr->neg = neg; /* must maintain order of command line */ *filter_next = ftr; filter_next = &ftr->next; } static void __add_filter(struct pid_list **head, const char *arg) { struct pid_list *list; char *pids = strdup(arg); char *pid; char *sav; int free = 1; if (!pids) die("malloc"); pid = strtok_r(pids, ",", &sav); while (pid) { list = malloc_or_die(sizeof(*list)); list->pid = pid; list->free = free; list->next = *head; *head = list; /* The first pid needs to be freed */ free = 0; pid = strtok_r(NULL, ",", &sav); } } static void add_comm_filter(const char *arg) { __add_filter(&comm_list, arg); } static void add_pid_filter(const char *arg) { __add_filter(&pid_list, arg); } static char *append_pid_filter(char *curr_filter, char *pid) { char *filter; int len; #define FILTER_FMT "(common_pid==" __STR ")||(pid==" __STR ")||(next_pid==" __STR ")" #undef __STR #define __STR "" /* strlen(".*:") > strlen("||") */ len = strlen(".*:" FILTER_FMT) + strlen(pid) * 3 + 1; #undef __STR #define __STR "%s" if (!curr_filter) { filter = malloc_or_die(len); sprintf(filter, ".*:" FILTER_FMT, pid, pid, pid); } else { len += strlen(curr_filter); filter = realloc(curr_filter, len); if (!filter) die("realloc"); sprintf(filter, "%s||" FILTER_FMT, filter, pid, pid, pid); } return filter; } static void convert_comm_filter(struct tracecmd_input *handle) { struct pevent *pevent; struct pid_list *list; struct cmdline *cmdline; char pidstr[100]; if (!comm_list) return; pevent = tracecmd_get_pevent(handle); /* Seach for comm names and get their pids */ for (list = comm_list; list; list = list->next) { cmdline = pevent_data_pid_from_comm(pevent, list->pid, NULL); if (!cmdline) { warning("comm: %s not in cmdline list", list->pid); continue; } do { sprintf(pidstr, "%d", pevent_cmdline_pid(pevent, cmdline)); add_pid_filter(pidstr); cmdline = pevent_data_pid_from_comm(pevent, list->pid, cmdline); } while (cmdline); } while (comm_list) { list = comm_list; comm_list = comm_list->next; if (list->free) free(list->pid); free(list); } } static void make_pid_filter(struct tracecmd_input *handle) { struct pid_list *list; char *str = NULL; convert_comm_filter(handle); if (!pid_list) return; /* First do all common pids */ for (list = pid_list; list; list = list->next) { str = append_pid_filter(str, list->pid); } add_filter(str, 0); free(str); while (pid_list) { list = pid_list; pid_list = pid_list->next; if (list->free) free(list->pid); free(list); } } static void process_filters(struct handle_list *handles) { struct filter **filter_next = &handles->event_filters; struct filter **filter_out_next = &handles->event_filter_out; struct filter *event_filter; struct filter_str *filter; struct pevent *pevent; char errstr[200]; int ret; pevent = tracecmd_get_pevent(handles->handle); make_pid_filter(handles->handle); while (filter_strings) { filter = filter_strings; filter_strings = filter->next; event_filter = malloc_or_die(sizeof(*event_filter)); event_filter->next = NULL; event_filter->filter = pevent_filter_alloc(pevent); if (!event_filter->filter) die("malloc"); ret = pevent_filter_add_filter_str(event_filter->filter, filter->filter); if (ret < 0) { pevent_strerror(pevent, ret, errstr, sizeof(errstr)); die("Error filtering: %s\n%s", filter->filter, errstr); } if (filter->neg) { *filter_out_next = event_filter; filter_out_next = &event_filter->next; } else { *filter_next = event_filter; filter_next = &event_filter->next; } free(filter->filter); free(filter); } } static void init_wakeup(struct tracecmd_input *handle) { struct event_format *event; struct pevent *pevent; if (!show_wakeup) return; pevent = tracecmd_get_pevent(handle); trace_hash_init(&wakeup_hash, WAKEUP_HASH_SIZE); event = pevent_find_event_by_name(pevent, "sched", "sched_wakeup"); if (!event) goto fail; wakeup_id = event->id; wakeup_task = pevent_find_field(event, "pid"); if (!wakeup_task) goto fail; wakeup_success = pevent_find_field(event, "success"); event = pevent_find_event_by_name(pevent, "sched", "sched_switch"); if (!event) goto fail; sched_id = event->id; sched_task = pevent_find_field(event, "next_pid"); if (!sched_task) goto fail; sched_prio = pevent_find_field(event, "next_prio"); if (!sched_prio) goto fail; wakeup_new_id = -1; event = pevent_find_event_by_name(pevent, "sched", "sched_wakeup_new"); if (!event) goto skip; wakeup_new_id = event->id; wakeup_new_task = pevent_find_field(event, "pid"); if (!wakeup_new_task) goto fail; wakeup_new_success = pevent_find_field(event, "success"); skip: return; fail: show_wakeup = 0; } static void add_wakeup(unsigned int val, unsigned long long start) { unsigned int key = trace_hash(val); struct wakeup_info *info; struct trace_hash_item *item; item = trace_hash_find(&wakeup_hash, key, NULL, NULL); if (item) { info = container_of(item, struct wakeup_info, hash); /* Hmm, double wakeup? */ info->start = start; return; } info = malloc_or_die(sizeof(*info)); info->hash.key = val; info->start = start; trace_hash_add(&wakeup_hash, &info->hash); } static unsigned long long max_lat = 0; static unsigned long long max_time; static unsigned long long min_lat = -1; static unsigned long long min_time; static unsigned long long max_rt_lat = 0; static unsigned long long max_rt_time; static unsigned long long min_rt_lat = -1; static unsigned long long min_rt_time; static void add_sched(unsigned int val, unsigned long long end, int rt) { struct trace_hash_item *item; unsigned int key = trace_hash(val); struct wakeup_info *info; unsigned long long cal; item = trace_hash_find(&wakeup_hash, key, NULL, NULL); if (!item) return; info = container_of(item, struct wakeup_info, hash); cal = end - info->start; if (cal > max_lat) { max_lat = cal; max_time = end; } if (cal < min_lat) { min_lat = cal; min_time = end; } if (rt) { if (cal > max_rt_lat) { max_rt_lat = cal; max_rt_time = end; } if (cal < min_rt_lat) { min_rt_lat = cal; min_rt_time = end; } } printf(" Latency: %llu.%03llu usecs", cal / 1000, cal % 1000); total_wakeup_lat += cal; wakeup_lat_count++; if (rt) { total_wakeup_rt_lat += cal; wakeup_rt_lat_count++; } trace_hash_del(item); free(info); } static void process_wakeup(struct pevent *pevent, struct pevent_record *record) { unsigned long long val; int id; if (!show_wakeup) return; id = pevent_data_type(pevent, record); if (id == wakeup_id) { if (pevent_read_number_field(wakeup_success, record->data, &val) == 0) { if (!val) return; } if (pevent_read_number_field(wakeup_task, record->data, &val)) return; add_wakeup(val, record->ts); } else if (id == wakeup_new_id) { if (pevent_read_number_field(wakeup_new_success, record->data, &val) == 0) { if (!val) return; } if (pevent_read_number_field(wakeup_new_task, record->data, &val)) return; add_wakeup(val, record->ts); } else if (id == sched_id) { int rt = 1; if (pevent_read_number_field(sched_prio, record->data, &val)) return; if (val > 99) rt = 0; if (pevent_read_number_field(sched_task, record->data, &val)) return; add_sched(val, record->ts, rt); } } static void show_wakeup_timings(unsigned long long total, unsigned long count, unsigned long long lat_max, unsigned long long time_max, unsigned long long lat_min, unsigned long long time_min) { total /= count; printf("\nAverage wakeup latency: %llu.%03llu usecs\n", total / 1000, total % 1000); printf("Maximum Latency: %llu.%03llu usecs at ", lat_max / 1000, lat_max % 1000); printf("timestamp: %llu.%06llu\n", time_max / 1000000000, ((time_max + 500) % 1000000000) / 1000); printf("Minimum Latency: %llu.%03llu usecs at ", lat_min / 1000, lat_min % 1000); printf("timestamp: %llu.%06llu\n\n", time_min / 1000000000, ((time_min + 500) % 1000000000) / 1000); } static void finish_wakeup(void) { struct wakeup_info *info; struct trace_hash_item **bucket; struct trace_hash_item *item; if (!show_wakeup || !wakeup_lat_count) return; show_wakeup_timings(total_wakeup_lat, wakeup_lat_count, max_lat, max_time, min_lat, min_time); if (wakeup_rt_lat_count) { printf("RT task timings:\n"); show_wakeup_timings(total_wakeup_rt_lat, wakeup_rt_lat_count, max_rt_lat, max_rt_time, min_rt_lat, min_rt_time); } trace_hash_for_each_bucket(bucket, &wakeup_hash) { trace_hash_while_item(item, bucket) { trace_hash_del(item); info = container_of(item, struct wakeup_info, hash); free(info); } } trace_hash_free(&wakeup_hash); } void trace_show_data(struct tracecmd_input *handle, struct pevent_record *record, int profile) { struct pevent *pevent; struct trace_seq s; int cpu = record->cpu; bool use_trace_clock; pevent = tracecmd_get_pevent(handle); test_save(record, cpu); if (profile) { trace_profile_record(handle, record, cpu); return; } trace_seq_init(&s); if (record->missed_events > 0) trace_seq_printf(&s, "CPU:%d [%lld EVENTS DROPPED]\n", cpu, record->missed_events); else if (record->missed_events < 0) trace_seq_printf(&s, "CPU:%d [EVENTS DROPPED]\n", cpu); if (buffer_breaks && tracecmd_record_at_buffer_start(handle, record)) trace_seq_printf(&s, "CPU:%d [SUBBUFFER START]\n", cpu); use_trace_clock = tracecmd_get_use_trace_clock(handle); pevent_print_event(pevent, &s, record, use_trace_clock); if (s.len && *(s.buffer + s.len - 1) == '\n') s.len--; trace_seq_do_printf(&s); trace_seq_destroy(&s); process_wakeup(pevent, record); printf("\n"); } static void read_rest(void) { char buf[BUFSIZ + 1]; int r; do { r = read(input_fd, buf, BUFSIZ); if (r > 0) { buf[r] = 0; printf("%s", buf); } } while (r > 0); } static int test_filters(struct filter *event_filters, struct pevent_record *record, int neg) { int found = 0; int ret = FILTER_NONE; while (event_filters) { ret = pevent_filter_match(event_filters->filter, record); switch (ret) { case FILTER_NONE: case FILTER_MATCH: found = 1; } /* We need to test all negative filters */ if (!neg && found) break; event_filters = event_filters->next; } return ret; } struct stack_info_cpu { int cpu; int last_printed; }; struct stack_info { struct stack_info *next; struct handle_list *handles; struct stack_info_cpu *cpus; int stacktrace_id; int nr_cpus; }; static int test_stacktrace(struct handle_list *handles, struct pevent_record *record, int last_printed) { static struct stack_info *infos; struct stack_info *info; struct stack_info_cpu *cpu_info; struct handle_list *h; struct tracecmd_input *handle; struct event_format *event; struct pevent *pevent; static int init; int ret; int id; if (!init) { init = 1; list_for_each_entry(h, &handle_list, list) { info = malloc_or_die(sizeof(*info)); info->handles = h; info->nr_cpus = tracecmd_cpus(h->handle); info->cpus = malloc_or_die(sizeof(*info->cpus) * info->nr_cpus); memset(info->cpus, 0, sizeof(*info->cpus)); pevent = tracecmd_get_pevent(h->handle); event = pevent_find_event_by_name(pevent, "ftrace", "kernel_stack"); if (event) info->stacktrace_id = event->id; else info->stacktrace_id = 0; info->next = infos; infos = info; } } handle = handles->handle; pevent = tracecmd_get_pevent(handle); for (info = infos; info; info = info->next) if (info->handles == handles) break; if (!info->stacktrace_id) return 0; cpu_info = &info->cpus[record->cpu]; id = pevent_data_type(pevent, record); /* * Print the stack trace if the previous event was printed. * But do not print the stack trace if it is explicitly * being filtered out. */ if (id == info->stacktrace_id) { ret = test_filters(handles->event_filter_out, record, 1); if (ret != FILTER_MATCH) return cpu_info->last_printed; return 0; } cpu_info->last_printed = last_printed; return 0; } static struct pevent_record *get_next_record(struct handle_list *handles) { struct pevent_record *record; int found = 0; int cpu; int ret; if (handles->record) return handles->record; if (handles->done) return NULL; do { if (filter_cpus) { long long last_stamp = -1; struct pevent_record *precord; int first_record = 1; int next_cpu = -1; int i; for (i = 0; (cpu = filter_cpus[i]) >= 0; i++) { precord = tracecmd_peek_data(handles->handle, cpu); if (precord && (first_record || precord->ts < last_stamp)) { next_cpu = cpu; last_stamp = precord->ts; first_record = 0; } } if (!first_record) record = tracecmd_read_data(handles->handle, next_cpu); else record = NULL; } else record = tracecmd_read_next_data(handles->handle, &cpu); if (record) { ret = test_filters(handles->event_filters, record, 0); switch (ret) { case FILTER_NOEXIST: /* Stack traces may still filter this */ if (stacktrace_id && test_stacktrace(handles, record, 0)) found = 1; else free_record(record); break; case FILTER_NONE: case FILTER_MATCH: /* Test the negative filters (-v) */ ret = test_filters(handles->event_filter_out, record, 1); if (ret != FILTER_MATCH) { found = 1; break; } /* fall through */ default: free_record(record); } } } while (record && !found); if (record && stacktrace_id) test_stacktrace(handles, record, 1); handles->record = record; if (!record) handles->done = 1; return record; } static void free_handle_record(struct handle_list *handles) { if (!handles->record) return; free_record(handles->record); handles->record = NULL; } static void print_handle_file(struct handle_list *handles) { /* Only print file names if more than one file is read */ if (!multi_inputs && !instances) return; if (handles->file) printf("%*s: ", max_file_size, handles->file); else printf("%*s ", max_file_size, ""); } static void free_filters(struct filter *event_filter) { struct filter *filter; while (event_filter) { filter = event_filter; event_filter = filter->next; pevent_filter_free(filter->filter); free(filter); } } enum output_type { OUTPUT_NORMAL, OUTPUT_STAT_ONLY, OUTPUT_UNAME_ONLY, }; static void read_data_info(struct list_head *handle_list, enum output_type otype) { struct handle_list *handles; struct handle_list *last_handle; struct pevent_record *record; struct pevent_record *last_record; struct event_format *event; struct pevent *pevent; int cpus; int ret; list_for_each_entry(handles, handle_list, list) { /* Don't process instances that we added here */ if (tracecmd_is_buffer_instance(handles->handle)) continue; ret = tracecmd_init_data(handles->handle); if (ret < 0) die("failed to init data"); cpus = tracecmd_cpus(handles->handle); handles->cpus = cpus; print_handle_file(handles); printf("cpus=%d\n", cpus); /* Latency trace is just all ASCII */ if (ret > 0) { if (multi_inputs) die("latency traces do not work with multiple inputs"); read_rest(); return; } switch (otype) { case OUTPUT_NORMAL: break; case OUTPUT_STAT_ONLY: printf("\nKernel buffer statistics:\n" " Note: \"entries\" are the entries left in the kernel ring buffer and are not\n" " recorded in the trace data. They should all be zero.\n\n"); tracecmd_print_stats(handles->handle); continue; case OUTPUT_UNAME_ONLY: tracecmd_print_uname(handles->handle); continue; } /* Find the kernel_stacktrace if available */ pevent = tracecmd_get_pevent(handles->handle); event = pevent_find_event_by_name(pevent, "ftrace", "kernel_stack"); if (event) stacktrace_id = event->id; init_wakeup(handles->handle); if (last_hook) last_hook->next = tracecmd_hooks(handles->handle); trace_init_profile(handles->handle, hooks); process_filters(handles); /* If this file has buffer instances, get the handles for them */ instances = tracecmd_buffer_instances(handles->handle); if (instances) { struct tracecmd_input *new_handle; const char *name; int i; for (i = 0; i < instances; i++) { name = tracecmd_buffer_instance_name(handles->handle, i); if (!name) die("error in reading buffer instance"); new_handle = tracecmd_buffer_instance_handle(handles->handle, i); if (!new_handle) { warning("could not retreive handle %s", name); continue; } add_handle(new_handle, name); } } } if (otype != OUTPUT_NORMAL) return; do { last_handle = NULL; last_record = NULL; list_for_each_entry(handles, handle_list, list) { record = get_next_record(handles); if (!last_record || (record && record->ts < last_record->ts)) { last_record = record; last_handle = handles; } } if (last_record) { print_handle_file(last_handle); trace_show_data(last_handle->handle, last_record, profile); free_handle_record(last_handle); } } while (last_record); if (profile) trace_profile(); list_for_each_entry(handles, handle_list, list) { free_filters(handles->event_filters); free_filters(handles->event_filter_out); show_test(handles->handle); } } struct tracecmd_input *read_trace_header(const char *file) { input_fd = open(file, O_RDONLY); if (input_fd < 0) die("opening '%s'\n", file); return tracecmd_alloc_fd(input_fd); } static void sig_end(int sig) { fprintf(stderr, "trace-cmd: Received SIGINT\n"); exit(0); } static const char *skip_space_and_test_digit(const char *p, const char *cpu_str) { while (isspace(*p)) p++; if (!isdigit(*p)) die("invalid character '%c' in cpu string '%s'", *p, cpu_str); return p; } static void __add_cpu(int cpu) { filter_cpus = tracecmd_add_id(filter_cpus, cpu, nr_filter_cpus++); } static void parse_cpulist(const char *cpu_str) { unsigned a, b; const char *s = cpu_str; do { s = skip_space_and_test_digit(s, cpu_str); b = a = strtoul(s, (char **)&s, 10); if (*s == '-') { s = skip_space_and_test_digit(s + 1, cpu_str); b = strtoul(s, (char **)&s, 10); } if (!(a <= b)) die("range of cpu numbers must be lower to greater"); while (a <= b) { __add_cpu(a); a++; } if (*s == ',' || *s == ':') s++; } while (*s != '\0'); } static void read_file_fd(int fd, char *dst, int len) { size_t size = 0; int r; do { r = read(fd, dst+size, len); if (r > 0) { size += r; len -= r; } } while (r > 0); } static void add_functions(struct pevent *pevent, const char *file) { struct stat st; char *buf; int ret; int fd; fd = open(file, O_RDONLY); if (fd < 0) die("Can't read file %s", file); ret = fstat(fd, &st); if (ret < 0) die("Can't stat file %s", file); buf = malloc_or_die(st.st_size); read_file_fd(fd, buf, st.st_size); close(fd); parse_proc_kallsyms(pevent, buf, st.st_size); free(buf); } static void process_plugin_option(char *option) { char *name = option; char *val = NULL; char *p; if ((p = strstr(name, "="))) { *p = '\0'; val = p+1; } trace_util_add_option(name, val); } static void set_event_flags(struct pevent *pevent, struct event_str *list, unsigned int flag) { struct event_format **events; struct event_format *event; struct event_str *str; regex_t regex; int ret; int i; if (!list) return; events = pevent_list_events(pevent, 0); for (str = list; str; str = str->next) { char *match; match = malloc_or_die(strlen(str->event) + 3); sprintf(match, "^%s$", str->event); ret = regcomp(®ex, match, REG_ICASE|REG_NOSUB); if (ret < 0) die("Can't parse '%s'", str->event); free(match); for (i = 0; events[i]; i++) { event = events[i]; if (!regexec(®ex, event->name, 0, NULL, 0) || !regexec(®ex, event->system, 0, NULL, 0)) event->flags |= flag; } } } static void add_hook(const char *arg) { struct hook_list *hook; hook = tracecmd_create_event_hook(arg); hook->next = hooks; hooks = hook; if (!last_hook) last_hook = hook; } enum { OPT_uname = 244, OPT_profile = 245, OPT_event = 246, OPT_comm = 247, OPT_boundary = 248, OPT_stat = 249, OPT_pid = 250, OPT_nodate = 251, OPT_check_event_parsing = 252, OPT_kallsyms = 253, OPT_events = 254, OPT_cpu = 255, }; void trace_report (int argc, char **argv) { struct tracecmd_input *handle; struct pevent *pevent; struct event_str *raw_events = NULL; struct event_str *nohandler_events = NULL; struct event_str **raw_ptr = &raw_events; struct event_str **nohandler_ptr = &nohandler_events; const char *functions = NULL; const char *print_event = NULL; struct input_files *inputs; struct handle_list *handles; enum output_type otype; int show_stat = 0; int show_funcs = 0; int show_endian = 0; int show_page_size = 0; int show_printk = 0; int show_uname = 0; int latency_format = 0; int show_events = 0; int print_events = 0; int test_filters = 0; int nanosec = 0; int no_date = 0; int raw = 0; int neg = 0; int ret = 0; int check_event_parsing = 0; int c; list_head_init(&handle_list); list_head_init(&input_files); if (argc < 2) usage(argv); if (strcmp(argv[1], "report") != 0) usage(argv); signal(SIGINT, sig_end); for (;;) { int option_index = 0; static struct option long_options[] = { {"cpu", required_argument, NULL, OPT_cpu}, {"events", no_argument, NULL, OPT_events}, {"event", required_argument, NULL, OPT_event}, {"filter-test", no_argument, NULL, 'T'}, {"kallsyms", required_argument, NULL, OPT_kallsyms}, {"pid", required_argument, NULL, OPT_pid}, {"comm", required_argument, NULL, OPT_comm}, {"check-events", no_argument, NULL, OPT_check_event_parsing}, {"nodate", no_argument, NULL, OPT_nodate}, {"stat", no_argument, NULL, OPT_stat}, {"boundary", no_argument, NULL, OPT_boundary}, {"profile", no_argument, NULL, OPT_profile}, {"uname", no_argument, NULL, OPT_uname}, {"help", no_argument, NULL, '?'}, {NULL, 0, NULL, 0} }; c = getopt_long (argc-1, argv+1, "+hi:H:fepRr:tPNn:LlEwF:VvTqO:", long_options, &option_index); if (c == -1) break; switch (c) { case 'h': usage(argv); break; case 'i': if (input_file) { if (!multi_inputs) add_input(input_file); multi_inputs++; add_input(optarg); } else input_file = optarg; break; case 'F': add_filter(optarg, neg); break; case 'H': add_hook(optarg); break; case 'T': test_filters = 1; break; case 'f': show_funcs = 1; break; case 'P': show_printk = 1; break; case 'L': tracecmd_disable_sys_plugins = 1; break; case 'N': tracecmd_disable_plugins = 1; break; case 'n': *nohandler_ptr = malloc_or_die(sizeof(struct event_str)); (*nohandler_ptr)->event = optarg; (*nohandler_ptr)->next = NULL; nohandler_ptr = &(*nohandler_ptr)->next; break; case 'e': show_endian = 1; break; case 'p': show_page_size = 1; break; case 'E': show_events = 1; break; case 'R': raw = 1; break; case 'r': *raw_ptr = malloc_or_die(sizeof(struct event_str)); (*raw_ptr)->event = optarg; (*raw_ptr)->next = NULL; raw_ptr = &(*raw_ptr)->next; break; case 't': nanosec = 1; break; case 'w': show_wakeup = 1; break; case 'l': latency_format = 1; break; case 'O': process_plugin_option(optarg); break; case 'v': if (neg) die("Only 1 -v can be used"); neg = 1; break; case 'V': show_status = 1; break; case 'q': silence_warnings = 1; break; case OPT_cpu: parse_cpulist(optarg); break; case OPT_events: print_events = 1; break; case OPT_event: print_event = optarg; break; case OPT_kallsyms: functions = optarg; break; case OPT_pid: add_pid_filter(optarg); break; case OPT_comm: add_comm_filter(optarg); break; case OPT_check_event_parsing: check_event_parsing = 1; break; case OPT_nodate: no_date = 1; break; case OPT_stat: show_stat = 1; break; case OPT_boundary: /* Debug to look at buffer breaks */ buffer_breaks = 1; break; case OPT_profile: profile = 1; break; case OPT_uname: show_uname = 1; break; default: usage(argv); } } if ((argc - optind) >= 2) { if (input_file) usage(argv); input_file = argv[optind + 1]; } if (!input_file) input_file = default_input_file; if (!multi_inputs) add_input(input_file); else if (show_wakeup) die("Wakeup tracing can only be done on a single input file"); list_for_each_entry(inputs, &input_files, list) { handle = read_trace_header(inputs->file); if (!handle) die("error reading header for %s", inputs->file); /* If used with instances, top instance will have no tag */ add_handle(handle, multi_inputs ? inputs->file : NULL); if (no_date) tracecmd_set_flag(handle, TRACECMD_FL_IGNORE_DATE); page_size = tracecmd_page_size(handle); if (show_page_size) { printf("file page size is %d, and host page size is %d\n", page_size, getpagesize()); return; } pevent = tracecmd_get_pevent(handle); if (nanosec) pevent->flags |= PEVENT_NSEC_OUTPUT; if (raw) pevent->print_raw = 1; if (test_filters) pevent->test_filters = 1; if (functions) add_functions(pevent, functions); if (show_endian) { printf("file is %s endian and host is %s endian\n", pevent_is_file_bigendian(pevent) ? "big" : "little", pevent_is_host_bigendian(pevent) ? "big" : "little"); return; } if (print_events) { tracecmd_print_events(handle, NULL); return; } if (print_event) { tracecmd_print_events(handle, print_event); return; } ret = tracecmd_read_headers(handle); if (check_event_parsing) { if (ret || pevent->parsing_failures) exit(EINVAL); else exit(0); } else { if (ret) return; } if (show_funcs) { pevent_print_funcs(pevent); return; } if (show_printk) { pevent_print_printk(pevent); return; } if (show_events) { struct event_format **events; struct event_format *event; int i; events = pevent_list_events(pevent, EVENT_SORT_SYSTEM); for (i = 0; events[i]; i++) { event = events[i]; if (event->system) printf("%s:", event->system); printf("%s\n", event->name); } return; } set_event_flags(pevent, nohandler_events, EVENT_FL_NOHANDLE); set_event_flags(pevent, raw_events, EVENT_FL_PRINTRAW); } if (latency_format) pevent_set_latency_format(pevent, latency_format); otype = OUTPUT_NORMAL; if (show_stat) otype = OUTPUT_STAT_ONLY; /* yeah yeah, uname overrides stat */ if (show_uname) otype = OUTPUT_UNAME_ONLY; read_data_info(&handle_list, otype); list_for_each_entry(handles, &handle_list, list) { tracecmd_close(handles->handle); } free_handles(); free_inputs(); finish_wakeup(); return; } trace-cmd-2.5.3/trace-record.c000066400000000000000000002571031246701203100161020ustar00rootroot00000000000000/* * Copyright (C) 2008, 2009, 2010 Red Hat Inc, Steven Rostedt * * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; version 2 of the License (not later!) * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; if not, see * * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ */ #include #include #include #include #include #include #include #include #include #include #include #include #ifndef NO_PTRACE #include #else #ifdef WARN_NO_PTRACE #warning ptrace not supported. -c feature will not work #endif #endif #include #include #include #include #include #include #include #include #include "trace-local.h" #define _STR(x) #x #define STR(x) _STR(x) #define MAX_PATH 256 #define TRACE_CTRL "tracing_on" #define TRACE "trace" #define AVAILABLE "available_tracers" #define CURRENT "current_tracer" #define ITER_CTRL "trace_options" #define MAX_LATENCY "tracing_max_latency" #define STAMP "stamp" #define FUNC_STACK_TRACE "func_stack_trace" #define UDP_MAX_PACKET (65536 - 20) enum trace_type { TRACE_TYPE_RECORD = 1, TRACE_TYPE_START = (1 << 1), TRACE_TYPE_STREAM = (1 << 2), TRACE_TYPE_EXTRACT = (1 << 3), TRACE_TYPE_PROFILE = (1 << 4) | TRACE_TYPE_STREAM, }; static int rt_prio; static int use_tcp; static int keep; static unsigned int page_size; static const char *output_file = "trace.dat"; static int latency; static int sleep_time = 1000; static int cpu_count; static int recorder_threads; static struct pid_record_data *pids; static int buffers; /* Clear all function filters */ static int clear_function_filters; static char *host; static int *client_ports; static int sfd; static struct tracecmd_output *network_handle; /* Max size to let a per cpu file get */ static int max_kb; static int do_ptrace; static int filter_task; static int filter_pid = -1; static int finished; /* setting of /proc/sys/kernel/ftrace_enabled */ static int fset; static unsigned recorder_flags; /* Try a few times to get an accurate date */ static int date2ts_tries = 5; static struct func_list *graph_funcs; static int func_stack; static int save_stdout = -1; struct filter_pids { struct filter_pids *next; int pid; }; static struct filter_pids *filter_pids; static int nr_filter_pids; static int len_filter_pids; struct opt_list { struct opt_list *next; const char *option; }; static struct opt_list *options; static struct hook_list *hooks; static char *common_pid_filter; struct event_list { struct event_list *next; const char *event; char *trigger; char *filter; char *pid_filter; char *filter_file; char *trigger_file; char *enable_file; int neg; }; struct tracecmd_event_list *listed_events; struct events { struct events *sibling; struct events *children; struct events *next; char *name; }; /* Files to be reset when done recording */ struct reset_file { struct reset_file *next; char *path; char *reset; int prio; }; static struct reset_file *reset_files; /* Triggers need to be cleared in a special way */ static struct reset_file *reset_triggers; struct buffer_instance top_instance = { .keep = 1 }; struct buffer_instance *buffer_instances; struct buffer_instance *first_instance = &top_instance; static struct tracecmd_recorder *recorder; static int ignore_event_not_found = 0; static inline int is_top_instance(struct buffer_instance *instance) { return instance == &top_instance; } static inline int no_top_instance(void) { return first_instance != &top_instance; } static void init_instance(struct buffer_instance *instance) { instance->event_next = &instance->events; } enum { RESET_DEFAULT_PRIO = 0, RESET_HIGH_PRIO = 100000, }; static void add_reset_file(const char *file, const char *val, int prio) { struct reset_file *reset; struct reset_file **last = &reset_files; /* Only reset if we are not keeping the state */ if (keep) return; reset = malloc_or_die(sizeof(*reset)); reset->path = strdup(file); reset->reset = strdup(val); reset->prio = prio; if (!reset->path || !reset->reset) die("malloc"); while (*last && (*last)->prio > prio) last = &(*last)->next; reset->next = *last; *last = reset; } static void add_reset_trigger(const char *file) { struct reset_file *reset; /* Only reset if we are not keeping the state */ if (keep) return; reset = malloc_or_die(sizeof(*reset)); reset->path = strdup(file); reset->next = reset_triggers; reset_triggers = reset; } /* To save the contents of the file */ static void reset_save_file(const char *file, int prio) { char *content; content = get_file_content(file); add_reset_file(file, content, prio); free(content); } /* * @file: the file to check * @nop: If the content of the file is this, use the reset value * @reset: What to write if the file == @nop */ static void reset_save_file_cond(const char *file, int prio, const char *nop, const char *reset) { char *content; char *cond; if (keep) return; content = get_file_content(file); cond = strstrip(content); if (strcmp(cond, nop) == 0) add_reset_file(file, reset, prio); else add_reset_file(file, content, prio); free(content); } /** * add_instance - add a buffer instance to the internal list * @instance: The buffer instance to add */ void add_instance(struct buffer_instance *instance) { init_instance(instance); instance->next = buffer_instances; buffer_instances = instance; buffers++; } /** * create_instance - allocate a new buffer instance * @name: The name of the instance (instance will point to this) * * Returns a newly allocated instance. Note that @name will not be * copied, and the instance buffer will point to the string itself. */ struct buffer_instance *create_instance(char *name) { struct buffer_instance *instance; instance = malloc_or_die(sizeof(*instance)); memset(instance, 0, sizeof(*instance)); instance->name = optarg; return instance; } /** * tracecmd_stat_cpu - show the buffer stats of a particular CPU * @s: the trace_seq to record the data in. * @cpu: the CPU to stat * */ void tracecmd_stat_cpu_instance(struct buffer_instance *instance, struct trace_seq *s, int cpu) { char buf[BUFSIZ]; char *path; char *file; int fd; int r; file = malloc(40); if (!file) return; snprintf(file, 40, "per_cpu/cpu%d/stats", cpu); path = get_instance_file(instance, file); free(file); fd = open(path, O_RDONLY); tracecmd_put_tracing_file(path); if (fd < 0) return; while ((r = read(fd, buf, BUFSIZ)) > 0) trace_seq_printf(s, "%.*s", r, buf); close(fd); } /** * tracecmd_stat_cpu - show the buffer stats of a particular CPU * @s: the trace_seq to record the data in. * @cpu: the CPU to stat * */ void tracecmd_stat_cpu(struct trace_seq *s, int cpu) { tracecmd_stat_cpu_instance(&top_instance, s, cpu); } static void add_event(struct buffer_instance *instance, struct event_list *event) { *instance->event_next = event; instance->event_next = &event->next; event->next = NULL; } static void reset_event_list(struct buffer_instance *instance) { instance->events = NULL; init_instance(instance); } static char *get_temp_file(struct buffer_instance *instance, int cpu) { const char *name = instance->name; char *file = NULL; int size; if (name) { size = snprintf(file, 0, "%s.%s.cpu%d", output_file, name, cpu); file = malloc_or_die(size + 1); sprintf(file, "%s.%s.cpu%d", output_file, name, cpu); } else { size = snprintf(file, 0, "%s.cpu%d", output_file, cpu); file = malloc_or_die(size + 1); sprintf(file, "%s.cpu%d", output_file, cpu); } return file; } static void put_temp_file(char *file) { free(file); } static void delete_temp_file(struct buffer_instance *instance, int cpu) { const char *name = instance->name; char file[MAX_PATH]; if (name) snprintf(file, MAX_PATH, "%s.%s.cpu%d", output_file, name, cpu); else snprintf(file, MAX_PATH, "%s.cpu%d", output_file, cpu); unlink(file); } static int kill_thread_instance(int start, struct buffer_instance *instance) { int n = start; int i; for (i = 0; i < cpu_count; i++) { if (pids[n].pid > 0) { kill(pids[n].pid, SIGKILL); delete_temp_file(instance, i); pids[n].pid = 0; if (pids[n].brass[0] >= 0) close(pids[n].brass[0]); } n++; } return n; } static void kill_threads(void) { struct buffer_instance *instance; int i = 0; if (!recorder_threads || !pids) return; for_all_instances(instance) i = kill_thread_instance(i, instance); } void die(const char *fmt, ...) { va_list ap; int ret = errno; if (errno) perror("trace-cmd"); else ret = -1; kill_threads(); va_start(ap, fmt); fprintf(stderr, " "); vfprintf(stderr, fmt, ap); va_end(ap); fprintf(stderr, "\n"); exit(ret); } static int delete_thread_instance(int start, struct buffer_instance *instance) { int n = start; int i; for (i = 0; i < cpu_count; i++) { if (pids) { if (pids[n].pid) { delete_temp_file(instance, i); if (pids[n].pid < 0) pids[n].pid = 0; } n++; } else /* Extract does not allocate pids */ delete_temp_file(instance, i); } return n; } static void delete_thread_data(void) { struct buffer_instance *instance; int i = 0; for_all_instances(instance) i = delete_thread_instance(i, instance); /* * Top instance temp files are still created even if it * isn't used. */ if (no_top_instance()) { for (i = 0; i < cpu_count; i++) delete_temp_file(&top_instance, i); } } static void stop_threads(enum trace_type type) { struct timeval tv = { 0, 0 }; int profile = (type & TRACE_TYPE_PROFILE) == TRACE_TYPE_PROFILE; int ret; int i; if (!cpu_count) return; /* Tell all threads to finish up */ for (i = 0; i < recorder_threads; i++) { if (pids[i].pid > 0) { kill(pids[i].pid, SIGINT); } } /* Flush out the pipes */ if (type & TRACE_TYPE_STREAM) { do { ret = trace_stream_read(pids, recorder_threads, &tv, profile); } while (ret > 0); } for (i = 0; i < recorder_threads; i++) { if (pids[i].pid > 0) { waitpid(pids[i].pid, NULL, 0); pids[i].pid = -1; } } } static int create_recorder(struct buffer_instance *instance, int cpu, enum trace_type type, int *brass); static void flush_threads(void) { long ret; int i; if (!cpu_count) return; for (i = 0; i < cpu_count; i++) { /* Extract doesn't support sub buffers yet */ ret = create_recorder(&top_instance, i, TRACE_TYPE_EXTRACT, NULL); if (ret < 0) die("error reading ring buffer"); } } static int set_ftrace_enable(const char *path, int set) { struct stat st; int fd; char *val = set ? "1" : "0"; int ret; /* if ftace_enable does not exist, simply ignore it */ fd = stat(path, &st); if (fd < 0) return -ENODEV; reset_save_file(path, RESET_DEFAULT_PRIO); ret = -1; fd = open(path, O_WRONLY); if (fd < 0) goto out; /* Now set or clear the function option */ ret = write(fd, val, 1); close(fd); out: return ret < 0 ? ret : 0; } static int set_ftrace_proc(int set) { const char *path = "/proc/sys/kernel/ftrace_enabled"; int ret; ret = set_ftrace_enable(path, set); if (ret == -1) die ("Can't %s ftrace", set ? "enable" : "disable"); return ret; } static int set_ftrace(int set, int use_proc) { char *path; int ret; /* First check if the function-trace option exists */ path = tracecmd_get_tracing_file("options/function-trace"); ret = set_ftrace_enable(path, set); tracecmd_put_tracing_file(path); /* Always enable ftrace_enable proc file when set is true */ if (ret < 0 || set || use_proc) ret = set_ftrace_proc(set); return 0; } /** * get_instance_file - return the path to a instance file. * @instance: buffer instance for the file * @file: name of file to return * * Returns the path name of the @file for the given @instance. * * Must use tracecmd_put_tracing_file() to free the returned string. */ char * get_instance_file(struct buffer_instance *instance, const char *file) { char *buf; char *path; if (instance->name) { buf = malloc_or_die(strlen(instance->name) + strlen(file) + strlen("instances//") + 1); sprintf(buf, "instances/%s/%s", instance->name, file); path = tracecmd_get_tracing_file(buf); free(buf); } else path = tracecmd_get_tracing_file(file); return path; } static char * get_instance_dir(struct buffer_instance *instance) { char *buf; char *path; /* only works for instances */ if (!instance->name) return NULL; buf = malloc_or_die(strlen(instance->name) + strlen("instances/") + 1); sprintf(buf, "instances/%s", instance->name); path = tracecmd_get_tracing_file(buf); free(buf); return path; } static void __clear_trace(struct buffer_instance *instance) { FILE *fp; char *path; /* reset the trace */ path = get_instance_file(instance, "trace"); fp = fopen(path, "w"); if (!fp) die("writing to '%s'", path); tracecmd_put_tracing_file(path); fwrite("0", 1, 1, fp); fclose(fp); } static void clear_trace(void) { struct buffer_instance *instance; for_all_instances(instance) __clear_trace(instance); } static void reset_max_latency(void) { FILE *fp; char *path; /* reset the trace */ path = tracecmd_get_tracing_file("tracing_max_latency"); fp = fopen(path, "w"); if (!fp) die("writing to '%s'", path); tracecmd_put_tracing_file(path); fwrite("0", 1, 1, fp); fclose(fp); } static void add_filter_pid(int pid) { struct filter_pids *p; char buf[100]; p = malloc_or_die(sizeof(*p)); p->next = filter_pids; p->pid = pid; filter_pids = p; nr_filter_pids++; len_filter_pids += sprintf(buf, "%d", pid); } static void update_ftrace_pid(const char *pid, int reset) { static char *path; int ret; static int fd = -1; static int first = 1; struct stat st; if (!pid) { if (fd >= 0) close(fd); if (path) tracecmd_put_tracing_file(path); fd = -1; path = NULL; return; } /* Force reopen on reset */ if (reset && fd >= 0) { close(fd); fd = -1; } if (fd < 0) { if (!path) path = tracecmd_get_tracing_file("set_ftrace_pid"); if (!path) return; ret = stat(path, &st); if (ret < 0) return; if (first) { first = 0; reset_save_file_cond(path, RESET_DEFAULT_PRIO, "no pid", ""); } fd = open(path, O_WRONLY | O_CLOEXEC | (reset ? O_TRUNC : 0)); if (fd < 0) return; } ret = write(fd, pid, strlen(pid)); /* * Older kernels required "-1" to disable pid */ if (ret < 0 && !strlen(pid)) ret = write(fd, "-1", 2); if (ret < 0) die("error writing to %s", path); /* add whitespace in case another pid is written */ write(fd, " ", 1); } static void update_ftrace_pids(int reset) { char buf[100]; struct filter_pids *pid; for (pid = filter_pids; pid; pid = pid->next) { snprintf(buf, 100, "%d ", pid->pid); update_ftrace_pid(buf, reset); /* Only reset the first entry */ reset = 0; } } static void update_event_filters(struct buffer_instance *instance); static void update_pid_event_filters(struct buffer_instance *instance); static void enable_tracing(void); /** * make_pid_filter - create a filter string to all pids against @field * @curr_filter: Append to a previous filter (may realloc). Can be NULL * @field: The fild to compare the pids against * * Creates a new string or appends to an existing one if @curr_filter * is not NULL. The new string will contain a filter with all pids * in pid_filter list with the format (@field == pid) || .. * If @curr_filter is not NULL, it will add this string as: * (@curr_filter) && ((@field == pid) || ...) */ static char *make_pid_filter(char *curr_filter, const char *field) { struct filter_pids *p; char *filter; char *orit; char *str; int curr_len = 0; int len; len = len_filter_pids + (strlen(field) + strlen("(==)||")) * nr_filter_pids; if (curr_filter) { curr_len = strlen(curr_filter); filter = realloc(curr_filter, curr_len + len + strlen("(&&())")); if (!filter) die("realloc"); memmove(filter+1, curr_filter, curr_len); filter[0] = '('; strcat(filter, ")&&("); curr_len = strlen(filter); } else filter = malloc_or_die(len); /* Last '||' that is not used will cover the \0 */ str = filter + curr_len; for (p = filter_pids; p; p = p->next) { if (p == filter_pids) orit = ""; else orit = "||"; len = sprintf(str, "%s(%s==%d)", orit, field, p->pid); str += len; } if (curr_len) sprintf(str, ")"); return filter; } static void update_task_filter(void) { struct buffer_instance *instance; int pid = getpid(); if (filter_task) add_filter_pid(pid); if (!filter_pids) return; common_pid_filter = make_pid_filter(NULL, "common_pid"); update_ftrace_pids(1); for_all_instances(instance) update_pid_event_filters(instance); } static pid_t trace_waitpid(enum trace_type type, pid_t pid, int *status, int options) { struct timeval tv = { 1, 0 }; int ret; int profile = (type & TRACE_TYPE_PROFILE) == TRACE_TYPE_PROFILE; if (type & TRACE_TYPE_STREAM) options |= WNOHANG; do { ret = waitpid(pid, status, options); if (ret != 0) return ret; if (type & TRACE_TYPE_STREAM) trace_stream_read(pids, recorder_threads, &tv, profile); } while (1); } #ifndef NO_PTRACE /** * append_pid_filter - add a new pid to an existing filter * @curr_filter: the filter to append to. If NULL, then allocate one * @field: The fild to compare the pid to * @pid: The pid to add to. */ static char *append_pid_filter(char *curr_filter, const char *field, int pid) { char *filter; int len; len = snprintf(NULL, 0, "(%s==%d)||", field, pid); if (!curr_filter) { /* No need for +1 as we don't use the "||" */ filter = malloc_or_die(len); sprintf(filter, "(%s==%d)", field, pid); } else { int indx = strlen(curr_filter); len += indx; filter = realloc(curr_filter, len + indx + 1); if (!filter) die("realloc"); sprintf(filter + indx, "||(%s==%d)", field, pid); } return filter; } static void append_sched_event(struct event_list *event, const char *field, int pid) { if (!event || !event->pid_filter) return; event->pid_filter = append_pid_filter(event->pid_filter, field, pid); } static void update_sched_events(struct buffer_instance *instance, int pid) { /* * Also make sure that the sched_switch to this pid * and wakeups of this pid are also traced. * Only need to do this if the events are active. */ append_sched_event(instance->sched_switch_event, "next_pid", pid); append_sched_event(instance->sched_wakeup_event, "pid", pid); append_sched_event(instance->sched_wakeup_new_event, "pid", pid); } static void add_new_filter_pid(int pid) { struct buffer_instance *instance; char buf[100]; add_filter_pid(pid); sprintf(buf, "%d", pid); update_ftrace_pid(buf, 0); common_pid_filter = append_pid_filter(common_pid_filter, "common_pid", pid); for_all_instances(instance) { update_sched_events(instance, pid); update_event_filters(instance); } } static void ptrace_attach(int pid) { int ret; ret = ptrace(PTRACE_ATTACH, pid, NULL, 0); if (ret < 0) { warning("Unable to trace process %d children", pid); do_ptrace = 0; return; } add_filter_pid(pid); } static void enable_ptrace(void) { if (!do_ptrace || !filter_task) return; ptrace(PTRACE_TRACEME, 0, NULL, 0); } static void ptrace_wait(enum trace_type type, int main_pid) { unsigned long send_sig; unsigned long child; siginfo_t sig; int cstatus; int status; int event; int pid; int ret; do { ret = trace_waitpid(type, -1, &status, WSTOPPED | __WALL); if (ret < 0) continue; pid = ret; if (WIFSTOPPED(status)) { event = (status >> 16) & 0xff; ptrace(PTRACE_GETSIGINFO, pid, NULL, &sig); send_sig = sig.si_signo; /* Don't send ptrace sigs to child */ if (send_sig == SIGTRAP || send_sig == SIGSTOP) send_sig = 0; switch (event) { case PTRACE_EVENT_FORK: case PTRACE_EVENT_VFORK: case PTRACE_EVENT_CLONE: /* forked a child */ ptrace(PTRACE_GETEVENTMSG, pid, NULL, &child); ptrace(PTRACE_SETOPTIONS, child, NULL, PTRACE_O_TRACEFORK | PTRACE_O_TRACEVFORK | PTRACE_O_TRACECLONE | PTRACE_O_TRACEEXIT); add_new_filter_pid(child); ptrace(PTRACE_CONT, child, NULL, 0); break; case PTRACE_EVENT_EXIT: ptrace(PTRACE_GETEVENTMSG, pid, NULL, &cstatus); ptrace(PTRACE_DETACH, pid, NULL, NULL); break; } ptrace(PTRACE_SETOPTIONS, pid, NULL, PTRACE_O_TRACEFORK | PTRACE_O_TRACEVFORK | PTRACE_O_TRACECLONE | PTRACE_O_TRACEEXIT); ptrace(PTRACE_CONT, pid, NULL, send_sig); } } while (!finished && ret > 0 && (!WIFEXITED(status) || pid != main_pid)); } #else static inline void ptrace_wait(int main_pid) { } static inline void enable_ptrace(void) { } static inline void ptrace_attach(int pid) { } #endif /* NO_PTRACE */ static void trace_or_sleep(enum trace_type type) { struct timeval tv = { 1 , 0 }; int profile = (type & TRACE_TYPE_PROFILE) == TRACE_TYPE_PROFILE; if (do_ptrace && filter_pid >= 0) ptrace_wait(type, filter_pid); else if (type & TRACE_TYPE_STREAM) trace_stream_read(pids, recorder_threads, &tv, profile); else sleep(10); } static void run_cmd(enum trace_type type, int argc, char **argv) { int status; int pid; if ((pid = fork()) < 0) die("failed to fork"); if (!pid) { /* child */ update_task_filter(); enable_tracing(); enable_ptrace(); /* * If we are using stderr for stdout, switch * it back to the saved stdout for the code we run. */ if (save_stdout >= 0) { close(1); dup2(save_stdout, 1); close(save_stdout); } if (execvp(argv[0], argv)) { fprintf(stderr, "\n********************\n"); fprintf(stderr, " Unable to exec %s\n", argv[0]); fprintf(stderr, "********************\n"); die("Failed to exec %s", argv[0]); } } if (do_ptrace) { add_filter_pid(pid); ptrace_wait(type, pid); } else trace_waitpid(type, pid, &status, 0); } static void set_plugin_instance(struct buffer_instance *instance, const char *name) { FILE *fp; char *path; char zero = '0'; path = get_instance_file(instance, "current_tracer"); fp = fopen(path, "w"); if (!fp) { /* * Legacy kernels do not have current_tracer file, and they * always use nop. So, it doesn't need to try to change the * plugin for those if name is "nop". */ if (!strncmp(name, "nop", 3)) { tracecmd_put_tracing_file(path); return; } die("writing to '%s'", path); } tracecmd_put_tracing_file(path); fwrite(name, 1, strlen(name), fp); fclose(fp); if (strncmp(name, "function", 8) != 0) return; /* Make sure func_stack_trace option is disabled */ /* First try instance file, then top level */ path = get_instance_file(instance, "options/func_stack_trace"); fp = fopen(path, "w"); if (!fp) { tracecmd_put_tracing_file(path); path = tracecmd_get_tracing_file("options/func_stack_trace"); fp = fopen(path, "w"); if (!fp) { tracecmd_put_tracing_file(path); return; } } /* * Always reset func_stack_trace to zero. Don't bother saving * the original content. */ add_reset_file(path, "0", RESET_HIGH_PRIO); tracecmd_put_tracing_file(path); fwrite(&zero, 1, 1, fp); fclose(fp); } static void set_plugin(const char *name) { struct buffer_instance *instance; for_all_instances(instance) set_plugin_instance(instance, name); } static void save_option(const char *option) { struct opt_list *opt; opt = malloc_or_die(sizeof(*opt)); opt->next = options; options = opt; opt->option = option; } static int set_option(const char *option) { FILE *fp; char *path; path = tracecmd_get_tracing_file("trace_options"); fp = fopen(path, "w"); if (!fp) warning("writing to '%s'", path); tracecmd_put_tracing_file(path); if (!fp) return -1; fwrite(option, 1, strlen(option), fp); fclose(fp); return 0; } static char *read_instance_file(struct buffer_instance *instance, char *file, int *psize); static void disable_func_stack_trace_instance(struct buffer_instance *instance) { struct stat st; char *content; char *path; char *cond; int size; int ret; path = get_instance_file(instance, "current_tracer"); ret = stat(path, &st); tracecmd_put_tracing_file(path); if (ret < 0) return; content = read_instance_file(instance, "current_tracer", &size); cond = strstrip(content); if (memcmp(cond, "function", size - (cond - content)) !=0) goto out; set_option("nofunc_stack_trace"); out: free(content); } static void disable_func_stack_trace(void) { struct buffer_instance *instance; for_all_instances(instance) disable_func_stack_trace_instance(instance); } static void add_reset_options(void) { struct opt_list *opt; const char *option; char *content; char *path; char *ptr; int len; if (keep) return; path = tracecmd_get_tracing_file("trace_options"); content = get_file_content(path); for (opt = options; opt; opt = opt->next) { option = opt->option; len = strlen(option); ptr = content; again: ptr = strstr(ptr, option); if (ptr) { /* First make sure its the option we want */ if (ptr[len] != '\n') { ptr += len; goto again; } if (ptr - content >= 2 && strncmp(ptr - 2, "no", 2) == 0) { /* Make sure this isn't ohno-option */ if (ptr > content + 2 && *(ptr - 3) != '\n') { ptr += len; goto again; } /* we enabled it */ ptr[len] = 0; add_reset_file(path, ptr-2, RESET_DEFAULT_PRIO); ptr[len] = '\n'; continue; } /* make sure this is our option */ if (ptr > content && *(ptr - 1) != '\n') { ptr += len; goto again; } /* this option hasn't changed, ignore it */ continue; } /* ptr is NULL, not found, maybe option is a no */ if (strncmp(option, "no", 2) != 0) /* option is really not found? */ continue; option += 2; len = strlen(option); ptr = content; loop: ptr = strstr(content, option); if (!ptr) /* Really not found? */ continue; /* make sure this is our option */ if (ptr[len] != '\n') { ptr += len; goto loop; } if (ptr > content && *(ptr - 1) != '\n') { ptr += len; goto loop; } add_reset_file(path, option, RESET_DEFAULT_PRIO); } tracecmd_put_tracing_file(path); free(content); } static void set_options(void) { struct opt_list *opt; int ret; add_reset_options(); while (options) { opt = options; options = opt->next; ret = set_option(opt->option); if (ret < 0) exit(-1); free(opt); } } static int trace_check_file_exists(struct buffer_instance *instance, char *file) { struct stat st; char *path; int ret; path = get_instance_file(instance, file); ret = stat(path, &st); tracecmd_put_tracing_file(path); return ret < 0 ? 0 : 1; } static int use_old_event_method(void) { static int old_event_method; static int processed; if (processed) return old_event_method; /* Check if the kernel has the events/enable file */ if (!trace_check_file_exists(&top_instance, "events/enable")) old_event_method = 1; processed = 1; return old_event_method; } static void old_update_events(const char *name, char update) { char *path; FILE *fp; int ret; if (strcmp(name, "all") == 0) name = "*:*"; /* need to use old way */ path = tracecmd_get_tracing_file("set_event"); fp = fopen(path, "w"); if (!fp) die("opening '%s'", path); tracecmd_put_tracing_file(path); /* Disable the event with "!" */ if (update == '0') fwrite("!", 1, 1, fp); ret = fwrite(name, 1, strlen(name), fp); if (ret < 0) die("bad event '%s'", name); ret = fwrite("\n", 1, 1, fp); if (ret < 0) die("bad event '%s'", name); fclose(fp); return; } static void reset_events_instance(struct buffer_instance *instance) { glob_t globbuf; char *path; char c; int fd; int i; int ret; if (use_old_event_method()) { /* old way only had top instance */ if (!is_top_instance(instance)) return; old_update_events("all", '0'); return; } c = '0'; path = get_instance_file(instance, "events/enable"); fd = open(path, O_WRONLY); if (fd < 0) die("opening to '%s'", path); ret = write(fd, &c, 1); close(fd); tracecmd_put_tracing_file(path); path = get_instance_file(instance, "events/*/filter"); globbuf.gl_offs = 0; ret = glob(path, 0, NULL, &globbuf); tracecmd_put_tracing_file(path); if (ret < 0) return; for (i = 0; i < globbuf.gl_pathc; i++) { path = globbuf.gl_pathv[i]; fd = open(path, O_WRONLY); if (fd < 0) die("opening to '%s'", path); ret = write(fd, &c, 1); close(fd); } globfree(&globbuf); } static void reset_events(void) { struct buffer_instance *instance; for_all_instances(instance) reset_events_instance(instance); } static int write_file(const char *file, const char *str, const char *type) { char buf[BUFSIZ]; int fd; int ret; fd = open(file, O_WRONLY); if (fd < 0) die("opening to '%s'", file); ret = write(fd, str, strlen(str)); close(fd); if (ret < 0 && type) { /* write failed */ fd = open(file, O_RDONLY); if (fd < 0) die("writing to '%s'", file); /* the filter has the error */ while ((ret = read(fd, buf, BUFSIZ)) > 0) fprintf(stderr, "%.*s", ret, buf); die("Failed %s of %s\n", type, file); close(fd); } return ret; } static int write_instance_file(struct buffer_instance *instance, const char *file, const char *str, const char *type) { char *path; int ret; path = get_instance_file(instance, file); ret = write_file(path, str, type); tracecmd_put_tracing_file(path); return ret; } enum { STATE_NEWLINE, STATE_SKIP, STATE_COPY, }; static int find_trigger(const char *file, char *buf, int size, int fields) { FILE *fp; int state = STATE_NEWLINE; int ch; int len = 0; fp = fopen(file, "r"); if (!fp) return 0; while ((ch = fgetc(fp)) != EOF) { if (ch == '\n') { if (state == STATE_COPY) break; state = STATE_NEWLINE; continue; } if (state == STATE_SKIP) continue; if (state == STATE_NEWLINE && ch == '#') { state = STATE_SKIP; continue; } if (state == STATE_COPY && ch == ':' && --fields < 1) break; state = STATE_COPY; buf[len++] = ch; if (len == size - 1) break; } buf[len] = 0; fclose(fp); return len; } static void write_filter(const char *file, const char *filter) { write_file(file, filter, "filter"); } static void clear_filter(const char *file) { write_filter(file, "0"); } static void write_trigger(const char *file, const char *trigger) { write_file(file, trigger, "trigger"); } static void write_func_filter(const char *file, const char *trigger) { write_file(file, trigger, "function filter"); } static void clear_trigger(const char *file) { char trigger[BUFSIZ]; int len; trigger[0] = '!'; /* * To delete a trigger, we need to write a '!trigger' * to the file for each trigger. */ do { len = find_trigger(file, trigger+1, BUFSIZ-1, 1); if (len) write_trigger(file, trigger); } while (len); } static void clear_func_filter(const char *file) { char trigger[BUFSIZ]; struct stat st; char *p; int len; int ret; int fd; /* Function filters may not exist */ ret = stat(file, &st); if (ret < 0) return; /* First zero out normal filters */ fd = open(file, O_WRONLY | O_TRUNC); if (fd < 0) die("opening to '%s'", file); close(fd); /* Now remove triggers */ trigger[0] = '!'; /* * To delete a trigger, we need to write a '!trigger' * to the file for each trigger. */ do { len = find_trigger(file, trigger+1, BUFSIZ-1, 3); if (len) { /* * To remove "unlimited" triggers, we must remove * the ":unlimited" from what we write. */ if ((p = strstr(trigger, ":unlimited"))) { *p = '\0'; len = p - trigger; } /* * The write to this file expects white space * at the end :-p */ trigger[len] = '\n'; trigger[len+1] = '\0'; write_func_filter(file, trigger); } } while (len > 0); } static void update_reset_triggers(void) { struct reset_file *reset; while (reset_triggers) { reset = reset_triggers; reset_triggers = reset->next; clear_trigger(reset->path); free(reset->path); free(reset); } } static void update_reset_files(void) { struct reset_file *reset; while (reset_files) { reset = reset_files; reset_files = reset->next; write_file(reset->path, reset->reset, "reset"); free(reset->path); free(reset->reset); free(reset); } } static void update_event(struct event_list *event, const char *filter, int filter_only, char update) { const char *name = event->event; FILE *fp; char *path; int ret; if (use_old_event_method()) { if (filter_only) return; old_update_events(name, update); return; } if (filter && event->filter_file) { add_reset_file(event->filter_file, "0", RESET_DEFAULT_PRIO); write_filter(event->filter_file, filter); } if (event->trigger_file) { add_reset_trigger(event->trigger_file); clear_trigger(event->trigger_file); write_trigger(event->trigger_file, event->trigger); /* Make sure we don't write this again */ free(event->trigger_file); free(event->trigger); event->trigger_file = NULL; event->trigger = NULL; } if (filter_only || !event->enable_file) return; path = event->enable_file; fp = fopen(path, "w"); if (!fp) die("writing to '%s'", path); ret = fwrite(&update, 1, 1, fp); fclose(fp); if (ret < 0) die("writing to '%s'", path); } /* * The debugfs file tracing_enabled needs to be deprecated. * But just in case anyone fiddled with it. If it exists, * make sure it is one. * No error checking needed here. */ static void check_tracing_enabled(void) { static int fd = -1; char *path; if (fd < 0) { path = tracecmd_get_tracing_file("tracing_enabled"); fd = open(path, O_WRONLY | O_CLOEXEC); tracecmd_put_tracing_file(path); if (fd < 0) return; } write(fd, "1", 1); } static int open_tracing_on(struct buffer_instance *instance) { int fd = instance->tracing_on_fd; char *path; /* OK, we keep zero for stdin */ if (fd > 0) return fd; path = get_instance_file(instance, "tracing_on"); fd = open(path, O_RDWR | O_CLOEXEC); if (fd < 0) { /* instances may not be created yet */ if (is_top_instance(instance)) die("opening '%s'", path); return fd; } tracecmd_put_tracing_file(path); instance->tracing_on_fd = fd; return fd; } static void write_tracing_on(struct buffer_instance *instance, int on) { int ret; int fd; fd = open_tracing_on(instance); if (fd < 0) return; if (on) ret = write(fd, "1", 1); else ret = write(fd, "0", 1); if (ret < 0) die("writing 'tracing_on'"); } static int read_tracing_on(struct buffer_instance *instance) { int fd; char buf[10]; int ret; fd = open_tracing_on(instance); if (fd < 0) return fd; ret = read(fd, buf, 10); if (ret <= 0) die("Reading 'tracing_on'"); buf[9] = 0; ret = atoi(buf); return ret; } static void enable_tracing(void) { struct buffer_instance *instance; check_tracing_enabled(); for_all_instances(instance) write_tracing_on(instance, 1); if (latency) reset_max_latency(); } static void disable_tracing(void) { struct buffer_instance *instance; for_all_instances(instance) write_tracing_on(instance, 0); } static void disable_all(int disable_tracer) { disable_tracing(); if (disable_tracer) { disable_func_stack_trace(); set_plugin("nop"); } reset_events(); /* Force close and reset of ftrace pid file */ update_ftrace_pid("", 1); update_ftrace_pid(NULL, 0); clear_trace(); } static void update_sched_event(struct event_list *event, const char *field) { if (!event) return; event->pid_filter = make_pid_filter(event->pid_filter, field); } static void update_event_filters(struct buffer_instance *instance) { struct event_list *event; char *event_filter; int free_it; int len; int common_len = 0; if (common_pid_filter) common_len = strlen(common_pid_filter); for (event = instance->events; event; event = event->next) { if (!event->neg) { free_it = 0; if (event->filter) { if (!common_pid_filter) /* * event->pid_filter is only created if * common_pid_filter is. No need to check that. * Just use the current event->filter. */ event_filter = event->filter; else if (event->pid_filter) { free_it = 1; len = common_len + strlen(event->pid_filter) + strlen(event->filter) + strlen("()&&(||)") + 1; event_filter = malloc_or_die(len); sprintf(event_filter, "(%s)&&(%s||%s)", event->filter, common_pid_filter, event->pid_filter); } else { free_it = 1; len = common_len + strlen(event->filter) + strlen("()&&()") + 1; event_filter = malloc_or_die(len); sprintf(event_filter, "(%s)&&(%s)", event->filter, common_pid_filter); } } else { /* event->pid_filter only exists when common_pid_filter does */ if (!common_pid_filter) continue; if (event->pid_filter) { free_it = 1; len = common_len + strlen(event->pid_filter) + strlen("||") + 1; event_filter = malloc_or_die(len); sprintf(event_filter, "%s||%s", common_pid_filter, event->pid_filter); } else event_filter = common_pid_filter; } update_event(event, event_filter, 1, '1'); if (free_it) free(event_filter); } } } static void update_pid_event_filters(struct buffer_instance *instance) { /* * Also make sure that the sched_switch to this pid * and wakeups of this pid are also traced. * Only need to do this if the events are active. */ update_sched_event(instance->sched_switch_event, "next_pid"); update_sched_event(instance->sched_wakeup_event, "pid"); update_sched_event(instance->sched_wakeup_new_event, "pid"); update_event_filters(instance); } static void set_mask(struct buffer_instance *instance) { const char *mask = instance->cpumask; struct stat st; char cpumask[4096]; /* Don't expect more than 32768 CPUS */ char *path; int fd; int ret; if (!mask) return; if (strcmp(mask, "-1") == 0) { /* set all CPUs */ int bytes = (cpu_count + 7) / 8; int last = cpu_count % 8; int i; if (bytes > 4095) { warning("cpumask can't handle more than 32768 CPUS!"); bytes = 4095; } sprintf(cpumask, "%x", (1 << last) - 1); for (i = 1; i < bytes; i++) cpumask[i] = 'f'; cpumask[i+1] = 0; mask = cpumask; } path = get_instance_file(instance, "tracing_cpumask"); if (!path) die("could not allocate path"); ret = stat(path, &st); if (ret < 0) { if (mask) warning("%s not found", path); goto out; } fd = open(path, O_WRONLY | O_TRUNC); if (fd < 0) die("could not open %s\n", path); if (mask) write(fd, mask, strlen(mask)); close(fd); out: tracecmd_put_tracing_file(path); } static void enable_events(struct buffer_instance *instance) { struct event_list *event; for (event = instance->events; event; event = event->next) { if (!event->neg) update_event(event, event->filter, 0, '1'); } /* Now disable any events */ for (event = instance->events; event; event = event->next) { if (event->neg) update_event(event, NULL, 0, '0'); } } static void set_clock(struct buffer_instance *instance) { char *path; char *content; char *str; if (!instance->clock) return; /* The current clock is in brackets, reset it when we are done */ content = read_instance_file(instance, "trace_clock", NULL); /* check if first clock is set */ if (*content == '[') str = strtok(content+1, "]"); else { str = strtok(content, "["); if (!str) die("Can not find clock in trace_clock"); str = strtok(NULL, "]"); } path = get_instance_file(instance, "trace_clock"); add_reset_file(path, str, RESET_DEFAULT_PRIO); free(content); tracecmd_put_tracing_file(path); write_instance_file(instance, "trace_clock", instance->clock, "clock"); } static struct event_list * create_event(struct buffer_instance *instance, char *path, struct event_list *old_event) { struct event_list *event; struct stat st; char *p; int ret; event = malloc_or_die(sizeof(*event)); *event = *old_event; add_event(instance, event); if (event->filter || filter_task || filter_pid) { event->filter_file = strdup(path); if (!event->filter_file) die("malloc filter file"); } for (p = path + strlen(path) - 1; p > path; p--) if (*p == '/') break; *p = '\0'; p = malloc_or_die(strlen(path) + strlen("/enable") + 1); sprintf(p, "%s/enable", path); ret = stat(p, &st); if (ret >= 0) event->enable_file = p; else free(p); if (event->trigger) { p = malloc_or_die(strlen(path) + strlen("/trigger") + 1); sprintf(p, "%s/trigger", path); ret = stat(p, &st); if (ret > 0) die("trigger specified but not supported by this kernel"); event->trigger_file = p; } return event; } static void make_sched_event(struct buffer_instance *instance, struct event_list **event, struct event_list *sched, const char *sched_path) { char *path; char *p; /* Do nothing if the event already exists */ if (*event) return; path = malloc_or_die(strlen(sched->filter_file) + strlen(sched_path) + 2); sprintf(path, "%s", sched->filter_file); /* Remove the /filter from filter file */ p = path + strlen(path) - strlen("filter"); sprintf(p, "%s/filter", sched_path); *event = create_event(instance, path, sched); free(path); } static void test_event(struct event_list *event, const char *path, const char *name, struct event_list **save, int len) { path += len - strlen(name); if (strcmp(path, name) != 0) return; *save = event; } static int expand_event_files(struct buffer_instance *instance, const char *file, struct event_list *old_event) { struct event_list **save_event_tail = instance->event_next; struct event_list *sched_event = NULL; struct event_list *event; glob_t globbuf; char *path; char *p; int ret; int i; p = malloc_or_die(strlen(file) + strlen("events//filter") + 1); sprintf(p, "events/%s/filter", file); path = get_instance_file(instance, p); printf("%s\n", path); globbuf.gl_offs = 0; ret = glob(path, 0, NULL, &globbuf); tracecmd_put_tracing_file(path); free(p); if (ret < 0) die("No filters found"); for (i = 0; i < globbuf.gl_pathc; i++) { int len; path = globbuf.gl_pathv[i]; event = create_event(instance, path, old_event); len = strlen(path); test_event(event, path, "sched", &sched_event, len); test_event(event, path, "sched/sched_switch", &instance->sched_switch_event, len); test_event(event, path, "sched/sched_wakeup_new", &instance->sched_wakeup_new_event, len); test_event(event, path, "sched/sched_wakeup", &instance->sched_wakeup_event, len); } if (sched_event && sched_event->filter_file) { /* make sure all sched events exist */ make_sched_event(instance, &instance->sched_switch_event, sched_event, "sched_switch"); make_sched_event(instance, &instance->sched_wakeup_event, sched_event, "sched_wakeup"); make_sched_event(instance, &instance->sched_wakeup_new_event, sched_event, "sched_wakeup_new"); } globfree(&globbuf); /* If the event list tail changed, that means events were added */ return save_event_tail == instance->event_next; } static void expand_event(struct buffer_instance *instance, struct event_list *event) { const char *name = event->event; char *str; char *ptr; int len; int ret; int ret2; /* * We allow the user to use "all" to enable all events. * Expand event_selection to all systems. */ if (strcmp(name, "all") == 0) { expand_event_files(instance, "*", event); return; } ptr = strchr(name, ':'); if (ptr) { len = ptr - name; str = malloc_or_die(strlen(name) + 1); /* may add '*' */ strcpy(str, name); str[len] = '/'; ptr++; if (!strlen(ptr)) { str[len + 1] = '*'; str[len + 2] = '\0'; } ret = expand_event_files(instance, str, event); if (!ignore_event_not_found && ret) die("No events enabled with %s", name); free(str); return; } /* No ':' so enable all matching systems and events */ ret = expand_event_files(instance, name, event); len = strlen(name) + strlen("*/") + 1; str = malloc_or_die(len); snprintf(str, len, "*/%s", name); ret2 = expand_event_files(instance, str, event); free(str); if (!ignore_event_not_found && ret && ret2) die("No events enabled with %s", name); } static void expand_event_instance(struct buffer_instance *instance) { struct event_list *compressed_list = instance->events; struct event_list *event; reset_event_list(instance); while (compressed_list) { event = compressed_list; compressed_list = event->next; expand_event(instance, event); free(event); } } static void expand_event_list(void) { struct buffer_instance *instance; if (use_old_event_method()) return; for_all_instances(instance) expand_event_instance(instance); } int count_cpus(void) { FILE *fp; char buf[1024]; int cpus = 0; char *pbuf; size_t *pn; size_t n; int r; cpus = sysconf(_SC_NPROCESSORS_CONF); if (cpus > 0) return cpus; warning("sysconf could not determine number of CPUS"); /* Do the hack to figure out # of CPUS */ n = 1024; pn = &n; pbuf = buf; fp = fopen("/proc/cpuinfo", "r"); if (!fp) die("Can not read cpuinfo"); while ((r = getline(&pbuf, pn, fp)) >= 0) { char *p; if (strncmp(buf, "processor", 9) != 0) continue; for (p = buf+9; isspace(*p); p++) ; if (*p == ':') cpus++; } fclose(fp); return cpus; } static void finish(int sig) { /* all done */ if (recorder) tracecmd_stop_recording(recorder); finished = 1; } static void flush(int sig) { if (recorder) tracecmd_stop_recording(recorder); } static void connect_port(int cpu) { struct addrinfo hints; struct addrinfo *results, *rp; int s; char buf[BUFSIZ]; snprintf(buf, BUFSIZ, "%d", client_ports[cpu]); memset(&hints, 0, sizeof(hints)); hints.ai_family = AF_UNSPEC; hints.ai_socktype = use_tcp ? SOCK_STREAM : SOCK_DGRAM; s = getaddrinfo(host, buf, &hints, &results); if (s != 0) die("connecting to %s server %s:%s", use_tcp ? "TCP" : "UDP", host, buf); for (rp = results; rp != NULL; rp = rp->ai_next) { sfd = socket(rp->ai_family, rp->ai_socktype, rp->ai_protocol); if (sfd == -1) continue; if (connect(sfd, rp->ai_addr, rp->ai_addrlen) != -1) break; close(sfd); } if (rp == NULL) die("Can not connect to %s server %s:%s", use_tcp ? "TCP" : "UDP", host, buf); freeaddrinfo(results); client_ports[cpu] = sfd; } static void set_prio(int prio) { struct sched_param sp; memset(&sp, 0, sizeof(sp)); sp.sched_priority = prio; if (sched_setscheduler(0, SCHED_FIFO, &sp) < 0) warning("failed to set priority"); } static struct tracecmd_recorder * create_recorder_instance_pipe(struct buffer_instance *instance, int cpu, int *brass) { struct tracecmd_recorder *recorder; unsigned flags = recorder_flags | TRACECMD_RECORD_BLOCK; char *path; if (instance->name) path = get_instance_dir(instance); else path = tracecmd_find_tracing_dir(); if (!path) die("malloc"); /* This is already the child */ close(brass[0]); recorder = tracecmd_create_buffer_recorder_fd(brass[1], cpu, flags, path); if (instance->name) tracecmd_put_tracing_file(path); return recorder; } static struct tracecmd_recorder * create_recorder_instance(struct buffer_instance *instance, const char *file, int cpu, int *brass) { struct tracecmd_recorder *record; char *path; if (brass) return create_recorder_instance_pipe(instance, cpu, brass); if (!instance->name) return tracecmd_create_recorder_maxkb(file, cpu, recorder_flags, max_kb); path = get_instance_dir(instance); record = tracecmd_create_buffer_recorder_maxkb(file, cpu, recorder_flags, path, max_kb); tracecmd_put_tracing_file(path); return record; } /* * If extract is set, then this is going to set up the recorder, * connections and exit as the tracing is serialized by a single thread. */ static int create_recorder(struct buffer_instance *instance, int cpu, enum trace_type type, int *brass) { long ret; char *file; int pid; /* network for buffer instances not supported yet */ if (client_ports && instance->name) return 0; if (type != TRACE_TYPE_EXTRACT) { signal(SIGUSR1, flush); pid = fork(); if (pid < 0) die("fork"); if (pid) return pid; if (rt_prio) set_prio(rt_prio); /* do not kill tasks on error */ cpu_count = 0; } if (client_ports) { connect_port(cpu); recorder = tracecmd_create_recorder_fd(client_ports[cpu], cpu, recorder_flags); } else { file = get_temp_file(instance, cpu); recorder = create_recorder_instance(instance, file, cpu, brass); put_temp_file(file); } if (!recorder) die ("can't create recorder"); if (type == TRACE_TYPE_EXTRACT) { ret = tracecmd_flush_recording(recorder); tracecmd_free_recorder(recorder); return ret; } while (!finished) { if (tracecmd_start_recording(recorder, sleep_time) < 0) break; } tracecmd_free_recorder(recorder); exit(0); } static void communicate_with_listener(int fd) { char buf[BUFSIZ]; ssize_t n; int cpu, i; n = read(fd, buf, 8); /* Make sure the server is the tracecmd server */ if (memcmp(buf, "tracecmd", 8) != 0) die("server not tracecmd server"); /* write the number of CPUs we have (in ASCII) */ sprintf(buf, "%d", cpu_count); /* include \0 */ write(fd, buf, strlen(buf)+1); /* write the pagesize (in ASCII) */ sprintf(buf, "%d", page_size); /* include \0 */ write(fd, buf, strlen(buf)+1); /* * If we are using IPV4 and our page size is greater than * or equal to 64K, we need to punt and use TCP. :-( */ /* TODO, test for ipv4 */ if (page_size >= UDP_MAX_PACKET) { warning("page size too big for UDP using TCP in live read"); use_tcp = 1; } if (use_tcp) { /* Send one option */ write(fd, "1", 2); /* Size 4 */ write(fd, "4", 2); /* use TCP */ write(fd, "TCP", 4); } else /* No options */ write(fd, "0", 2); client_ports = malloc_or_die(sizeof(int) * cpu_count); /* * Now we will receive back a comma deliminated list * of client ports to connect to. */ for (cpu = 0; cpu < cpu_count; cpu++) { for (i = 0; i < BUFSIZ; i++) { n = read(fd, buf+i, 1); if (n != 1) die("Error, reading server ports"); if (!buf[i] || buf[i] == ',') break; } if (i == BUFSIZ) die("read bad port number"); buf[i] = 0; client_ports[cpu] = atoi(buf); } } static void setup_network(void) { struct addrinfo hints; struct addrinfo *result, *rp; int sfd, s; char *server; char *port; char *p; if (!strchr(host, ':')) { server = strdup("localhost"); if (!server) die("alloctating server"); port = host; host = server; } else { host = strdup(host); if (!host) die("alloctating server"); server = strtok_r(host, ":", &p); port = strtok_r(NULL, ":", &p); } memset(&hints, 0, sizeof(hints)); hints.ai_family = AF_UNSPEC; hints.ai_socktype = SOCK_STREAM; s = getaddrinfo(server, port, &hints, &result); if (s != 0) die("getaddrinfo: %s", gai_strerror(s)); for (rp = result; rp != NULL; rp = rp->ai_next) { sfd = socket(rp->ai_family, rp->ai_socktype, rp->ai_protocol); if (sfd == -1) continue; if (connect(sfd, rp->ai_addr, rp->ai_addrlen) != -1) break; close(sfd); } if (!rp) die("Can not connect to %s:%s", server, port); freeaddrinfo(result); communicate_with_listener(sfd); /* Now create the handle through this socket */ network_handle = tracecmd_create_init_fd_glob(sfd, listed_events); /* OK, we are all set, let'r rip! */ } static void finish_network(void) { close(sfd); free(host); } static void start_threads(enum trace_type type) { int profile = (type & TRACE_TYPE_PROFILE) == TRACE_TYPE_PROFILE; struct buffer_instance *instance; int *brass = NULL; int i = 0; int ret; if (host) setup_network(); /* make a thread for every CPU we have */ pids = malloc_or_die(sizeof(*pids) * cpu_count * (buffers + 1)); memset(pids, 0, sizeof(*pids) * cpu_count * (buffers + 1)); for_all_instances(instance) { int x; for (x = 0; x < cpu_count; x++) { if (type & TRACE_TYPE_STREAM) { brass = pids[i].brass; ret = pipe(brass); if (ret < 0) die("pipe"); pids[i].stream = trace_stream_init(instance, x, brass[0], cpu_count, profile, hooks); if (!pids[i].stream) die("Creating stream for %d", i); } else pids[i].brass[0] = -1; pids[i].cpu = x; pids[i].instance = instance; /* Make sure all output is flushed before forking */ fflush(stdout); pids[i++].pid = create_recorder(instance, x, type, brass); if (brass) close(brass[1]); } } recorder_threads = i; } static void append_buffer(struct tracecmd_output *handle, struct tracecmd_option *buffer_option, struct buffer_instance *instance, char **temp_files) { int i; for (i = 0; i < cpu_count; i++) temp_files[i] = get_temp_file(instance, i); tracecmd_append_buffer_cpu_data(handle, buffer_option, cpu_count, temp_files); for (i = 0; i < cpu_count; i++) put_temp_file(temp_files[i]); } static void add_buffer_stat(struct tracecmd_output *handle, struct buffer_instance *instance) { struct trace_seq s; int i; trace_seq_init(&s); trace_seq_printf(&s, "\nBuffer: %s\n\n", instance->name); tracecmd_add_option(handle, TRACECMD_OPTION_CPUSTAT, s.len+1, s.buffer); trace_seq_destroy(&s); for (i = 0; i < cpu_count; i++) tracecmd_add_option(handle, TRACECMD_OPTION_CPUSTAT, instance->s[i].len+1, instance->s[i].buffer); } static void add_option_hooks(struct tracecmd_output *handle) { struct hook_list *hook; int len; for (hook = hooks; hook; hook = hook->next) { len = strlen(hook->hook); tracecmd_add_option(handle, TRACECMD_OPTION_HOOK, len + 1, hook->hook); } } static void add_uname(struct tracecmd_output *handle) { struct utsname buf; char *str; int len; int ret; ret = uname(&buf); /* if this fails for some reason, just ignore it */ if (ret < 0) return; len = strlen(buf.sysname) + strlen(buf.nodename) + strlen(buf.release) + strlen(buf.machine) + 4; str = malloc(len); if (!str) return; sprintf(str, "%s %s %s %s", buf.sysname, buf.nodename, buf.release, buf.machine); tracecmd_add_option(handle, TRACECMD_OPTION_UNAME, len, str); free(str); } static void touch_file(const char *file) { int fd; fd = open(file, O_WRONLY | O_CREAT | O_TRUNC, 0644); if (fd < 0) die("could not create file %s\n", file); close(fd); } static void record_data(char *date2ts) { struct tracecmd_option **buffer_options; struct tracecmd_output *handle; struct buffer_instance *instance; char **temp_files; int i; if (host) { finish_network(); return; } if (latency) handle = tracecmd_create_file_latency(output_file, cpu_count); else { if (!cpu_count) return; temp_files = malloc_or_die(sizeof(*temp_files) * cpu_count); for (i = 0; i < cpu_count; i++) temp_files[i] = get_temp_file(&top_instance, i); /* * If top_instance was not used, we still need to create * empty trace.dat files for it. */ if (no_top_instance()) { for (i = 0; i < cpu_count; i++) touch_file(temp_files[i]); } handle = tracecmd_create_init_file_glob(output_file, listed_events); if (!handle) die("Error creating output file"); if (date2ts) tracecmd_add_option(handle, TRACECMD_OPTION_DATE, strlen(date2ts)+1, date2ts); /* Only record the top instance under TRACECMD_OPTION_CPUSTAT*/ if (!no_top_instance()) { struct trace_seq *s = top_instance.s; for (i = 0; i < cpu_count; i++) tracecmd_add_option(handle, TRACECMD_OPTION_CPUSTAT, s[i].len+1, s[i].buffer); } tracecmd_add_option(handle, TRACECMD_OPTION_TRACECLOCK, 0, NULL); add_option_hooks(handle); add_uname(handle); if (buffers) { buffer_options = malloc_or_die(sizeof(*buffer_options) * buffers); i = 0; for_each_instance(instance) { buffer_options[i++] = tracecmd_add_buffer_option(handle, instance->name); add_buffer_stat(handle, instance); } } tracecmd_append_cpu_data(handle, cpu_count, temp_files); for (i = 0; i < cpu_count; i++) put_temp_file(temp_files[i]); if (buffers) { i = 0; for_each_instance(instance) { append_buffer(handle, buffer_options[i++], instance, temp_files); } } free(temp_files); } if (!handle) die("could not write to file"); tracecmd_output_close(handle); } static void write_func_file(struct buffer_instance *instance, const char *file, struct func_list **list) { struct func_list *item; char *path; int fd; int ret; path = get_instance_file(instance, file); fd = open(path, O_WRONLY | O_TRUNC); if (fd < 0) goto free; while (*list) { item = *list; *list = item->next; ret = write(fd, item->func, strlen(item->func)); if (ret < 0) goto failed; ret = write(fd, " ", 1); if (ret < 0) goto failed; free(item); } close(fd); free: tracecmd_put_tracing_file(path); return; failed: die("Failed to write %s to %s.\n" "Perhaps this function is not available for tracing.\n" "run 'trace-cmd list -f %s' to see if it is.", item->func, file, item->func); } static int functions_filtered(struct buffer_instance *instance) { char buf[1] = { '#' }; char *path; int fd; path = get_instance_file(instance, "set_ftrace_filter"); fd = open(path, O_RDONLY); tracecmd_put_tracing_file(path); if (fd < 0) { if (is_top_instance(instance)) warning("Can not set set_ftrace_filter"); else warning("Can not set set_ftrace_filter for %s", instance->name); return 0; } /* * If functions are not filtered, than the first character * will be '#'. Make sure it is not an '#' and also not space. */ read(fd, buf, 1); close(fd); if (buf[0] == '#' || isspace(buf[0])) return 0; return 1; } static void set_funcs(struct buffer_instance *instance) { write_func_file(instance, "set_ftrace_filter", &instance->filter_funcs); write_func_file(instance, "set_ftrace_notrace", &instance->notrace_funcs); /* graph tracing currently only works for top instance */ if (is_top_instance(instance)) write_func_file(instance, "set_graph_function", &graph_funcs); /* make sure we are filtering functions */ if (func_stack && is_top_instance(instance)) { if (!functions_filtered(instance)) die("Function stack trace set, but functions not filtered"); save_option(FUNC_STACK_TRACE); } clear_function_filters = 1; } static void add_func(struct func_list **list, const char *func) { struct func_list *item; item = malloc_or_die(sizeof(*item)); item->func = func; item->next = *list; *list = item; } static unsigned long long find_ts_in_page(struct pevent *pevent, void *page, int size) { struct event_format *event; struct format_field *field; struct pevent_record *last_record = NULL; struct pevent_record *record; unsigned long long ts = 0; int id; if (size <= 0) return 0; while (!ts) { record = tracecmd_read_page_record(pevent, page, size, last_record); if (!record) break; free_record(last_record); id = pevent_data_type(pevent, record); event = pevent_data_event_from_type(pevent, id); if (event) { /* Make sure this is our event */ field = pevent_find_field(event, "buf"); /* the trace_marker adds a '\n' */ if (field && strcmp(STAMP"\n", record->data + field->offset) == 0) ts = record->ts; } last_record = record; } free_record(last_record); return ts; } static unsigned long long find_time_stamp(struct pevent *pevent) { struct dirent *dent; unsigned long long ts = 0; void *page; char *path; char *file; DIR *dir; int len; int fd; int r; path = tracecmd_get_tracing_file("per_cpu"); if (!path) return 0; dir = opendir(path); if (!dir) goto out; len = strlen(path); file = malloc_or_die(len + strlen("trace_pipe_raw") + 32); page = malloc_or_die(page_size); while ((dent = readdir(dir))) { const char *name = dent->d_name; if (strncmp(name, "cpu", 3) != 0) continue; sprintf(file, "%s/%s/trace_pipe_raw", path, name); fd = open(file, O_RDONLY | O_NONBLOCK); if (fd < 0) continue; do { r = read(fd, page, page_size); ts = find_ts_in_page(pevent, page, r); if (ts) break; } while (r > 0); if (ts) break; } free(file); free(page); closedir(dir); out: tracecmd_put_tracing_file(path); return ts; } static char *read_instance_file(struct buffer_instance *instance, char *file, int *psize) { char buffer[BUFSIZ]; char *path; char *buf; int size = 0; int fd; int r; path = get_instance_file(instance, file); fd = open(path, O_RDONLY); tracecmd_put_tracing_file(path); if (fd < 0) { warning("%s not found, --date ignored", file); return NULL; } do { r = read(fd, buffer, BUFSIZ); if (r <= 0) continue; if (size) { buf = realloc(buf, size+r+1); if (!buf) die("malloc"); } else buf = malloc_or_die(r+1); memcpy(buf+size, buffer, r); size += r; } while (r); buf[size] = '\0'; if (psize) *psize = size; return buf; } static char *read_file(char *file, int *psize) { return read_instance_file(&top_instance, file, psize); } /* * Try to write the date into the ftrace buffer and then * read it back, mapping the timestamp to the date. */ static char *get_date_to_ts(void) { unsigned long long min = -1ULL; unsigned long long diff; unsigned long long stamp; unsigned long long min_stamp; unsigned long long min_ts; unsigned long long ts; struct pevent *pevent; struct timeval start; struct timeval end; char *date2ts = NULL; char *path; char *buf; int size; int tfd; int ret; int i; /* Set up a pevent to read the raw format */ pevent = pevent_alloc(); if (!pevent) { warning("failed to alloc pevent, --date ignored"); return NULL; } buf = read_file("events/header_page", &size); if (!buf) goto out_pevent; ret = pevent_parse_header_page(pevent, buf, size, sizeof(unsigned long)); free(buf); if (ret < 0) { warning("Can't parse header page, --date ignored"); goto out_pevent; } /* Find the format for ftrace:print. */ buf = read_file("events/ftrace/print/format", &size); if (!buf) goto out_pevent; ret = pevent_parse_event(pevent, buf, size, "ftrace"); free(buf); if (ret < 0) { warning("Can't parse print event, --date ignored"); goto out_pevent; } path = tracecmd_get_tracing_file("trace_marker"); tfd = open(path, O_WRONLY); tracecmd_put_tracing_file(path); if (tfd < 0) { warning("Can not open 'trace_marker', --date ignored"); goto out_pevent; } for (i = 0; i < date2ts_tries; i++) { disable_tracing(); clear_trace(); enable_tracing(); gettimeofday(&start, NULL); write(tfd, STAMP, 5); gettimeofday(&end, NULL); disable_tracing(); ts = find_time_stamp(pevent); if (!ts) continue; diff = (unsigned long long)end.tv_sec * 1000000; diff += (unsigned long long)end.tv_usec; stamp = diff; diff -= (unsigned long long)start.tv_sec * 1000000; diff -= (unsigned long long)start.tv_usec; if (diff < min) { min_ts = ts; min_stamp = stamp - diff / 2; min = diff; } } close(tfd); if (min == -1ULL) { warning("Failed to make date offset, --date ignored"); goto out_pevent; } /* 16 hex chars + 0x + \0 */ date2ts = malloc(19); if (!date2ts) goto out_pevent; /* * The difference between the timestamp and the gtod is * stored as an ASCII string in hex. */ snprintf(date2ts, 19, "0x%llx", min_stamp - min_ts / 1000); out_pevent: pevent_free(pevent); return date2ts; } static void set_buffer_size_instance(struct buffer_instance *instance) { int buffer_size = instance->buffer_size; char buf[BUFSIZ]; char *path; int ret; int fd; if (!buffer_size) return; if (buffer_size < 0) die("buffer size must be positive"); snprintf(buf, BUFSIZ, "%d", buffer_size); path = get_instance_file(instance, "buffer_size_kb"); fd = open(path, O_WRONLY); if (fd < 0) { warning("can't open %s", path); goto out; } ret = write(fd, buf, strlen(buf)); if (ret < 0) warning("Can't write to %s", path); close(fd); out: tracecmd_put_tracing_file(path); } void set_buffer_size(void) { struct buffer_instance *instance; for_all_instances(instance) set_buffer_size_instance(instance); } static void process_event_trigger(char *path, struct event_iter *iter, enum event_process *processed) { const char *system = iter->system_dent->d_name; const char *event = iter->event_dent->d_name; struct stat st; char *trigger = NULL; char *file; int ret; path = append_file(path, system); file = append_file(path, event); free(path); ret = stat(file, &st); if (ret < 0 || !S_ISDIR(st.st_mode)) goto out; trigger = append_file(file, "trigger"); ret = stat(trigger, &st); if (ret < 0) goto out; clear_trigger(trigger); out: free(trigger); free(file); } static void clear_instance_triggers(struct buffer_instance *instance) { struct event_iter *iter; char *path; char *system; enum event_iter_type type; enum event_process processed = PROCESSED_NONE; path = get_instance_file(instance, "events"); if (!path) die("malloc"); iter = trace_event_iter_alloc(path); processed = PROCESSED_NONE; system = NULL; while ((type = trace_event_iter_next(iter, path, system))) { if (type == EVENT_ITER_SYSTEM) { system = iter->system_dent->d_name; continue; } process_event_trigger(path, iter, &processed); } trace_event_iter_free(iter); tracecmd_put_tracing_file(path); } static void process_event_filter(char *path, struct event_iter *iter, enum event_process *processed) { const char *system = iter->system_dent->d_name; const char *event = iter->event_dent->d_name; struct stat st; char *filter = NULL; char *file; int ret; path = append_file(path, system); file = append_file(path, event); free(path); ret = stat(file, &st); if (ret < 0 || !S_ISDIR(st.st_mode)) goto out; filter = append_file(file, "filter"); ret = stat(filter, &st); if (ret < 0) goto out; clear_filter(filter); out: free(filter); free(file); } static void clear_instance_filters(struct buffer_instance *instance) { struct event_iter *iter; char *path; char *system; enum event_iter_type type; enum event_process processed = PROCESSED_NONE; path = get_instance_file(instance, "events"); if (!path) die("malloc"); iter = trace_event_iter_alloc(path); processed = PROCESSED_NONE; system = NULL; while ((type = trace_event_iter_next(iter, path, system))) { if (type == EVENT_ITER_SYSTEM) { system = iter->system_dent->d_name; continue; } process_event_filter(path, iter, &processed); } trace_event_iter_free(iter); tracecmd_put_tracing_file(path); } static void clear_filters(void) { struct buffer_instance *instance; for_all_instances(instance) clear_instance_filters(instance); } static void clear_triggers(void) { struct buffer_instance *instance; for_all_instances(instance) clear_instance_triggers(instance); } static void clear_func_filters(void) { struct buffer_instance *instance; char *path; int i; const char const *files[] = { "set_ftrace_filter", "set_ftrace_notrace", "set_graph_function", "set_graph_notrace", NULL }; for_all_instances(instance) { for (i = 0; files[i]; i++) { path = get_instance_file(instance, files[i]); clear_func_filter(path); tracecmd_put_tracing_file(path); } } } static void make_instances(void) { struct buffer_instance *instance; struct stat st; char *path; int ret; for_each_instance(instance) { path = get_instance_dir(instance); ret = stat(path, &st); if (ret < 0) { ret = mkdir(path, 0777); if (ret < 0) die("mkdir %s", path); } else /* Don't delete instances that already exist */ instance->keep = 1; tracecmd_put_tracing_file(path); } } static void remove_instances(void) { struct buffer_instance *instance; char *path; int ret; for_each_instance(instance) { /* Only delete what we created */ if (instance->keep) continue; if (instance->tracing_on_fd > 0) { close(instance->tracing_on_fd); instance->tracing_on_fd = 0; } path = get_instance_dir(instance); ret = rmdir(path); if (ret < 0) die("rmdir %s", path); tracecmd_put_tracing_file(path); } } static void check_plugin(const char *plugin) { char *buf; char *str; char *tok; /* * nop is special. We may want to just trace * trace_printks, that are in the kernel. */ if (strcmp(plugin, "nop") == 0) return; buf = read_file("available_tracers", NULL); if (!buf) die("No plugins available"); str = buf; while ((tok = strtok(str, " "))) { str = NULL; if (strcmp(tok, plugin) == 0) goto out; } die ("Plugin '%s' does not exist", plugin); out: fprintf(stderr, " plugin '%s'\n", plugin); free(buf); } static void check_function_plugin(void) { const char *plugin; /* We only care about the top_instance */ if (no_top_instance()) return; plugin = top_instance.plugin; if (!plugin) return; if (plugin && strncmp(plugin, "function", 8) == 0 && func_stack && !top_instance.filter_funcs) die("Must supply function filtering with --func-stack\n"); } static int __check_doing_something(struct buffer_instance *instance) { return instance->profile || instance->plugin || instance->events; } static void check_doing_something(void) { struct buffer_instance *instance; for_all_instances(instance) { if (__check_doing_something(instance)) return; } die("no event or plugin was specified... aborting"); } static void update_plugin_instance(struct buffer_instance *instance, enum trace_type type) { const char *plugin = instance->plugin; if (!plugin) return; check_plugin(plugin); /* * Latency tracers just save the trace and kill * the threads. */ if (strcmp(plugin, "irqsoff") == 0 || strcmp(plugin, "preemptoff") == 0 || strcmp(plugin, "preemptirqsoff") == 0 || strcmp(plugin, "wakeup") == 0 || strcmp(plugin, "wakeup_rt") == 0) { latency = 1; if (host) die("Network tracing not available with latency tracer plugins"); if (type & TRACE_TYPE_STREAM) die("Streaming is not available with latency tracer plugins"); } else if (type == TRACE_TYPE_RECORD) { if (latency) die("Can not record latency tracer and non latency trace together"); } if (fset < 0 && (strcmp(plugin, "function") == 0 || strcmp(plugin, "function_graph") == 0)) die("function tracing not configured on this kernel"); if (type != TRACE_TYPE_EXTRACT) set_plugin_instance(instance, plugin); } static void update_plugins(enum trace_type type) { struct buffer_instance *instance; for_all_instances(instance) update_plugin_instance(instance, type); } static void allocate_seq(void) { struct buffer_instance *instance; for_all_instances(instance) instance->s = malloc_or_die(sizeof(struct trace_seq) * cpu_count); } static void record_stats(void) { struct buffer_instance *instance; struct trace_seq *s; int cpu; for_all_instances(instance) { s = instance->s; for (cpu = 0; cpu < cpu_count; cpu++) { trace_seq_init(&s[cpu]); trace_seq_printf(&s[cpu], "CPU: %d\n", cpu); tracecmd_stat_cpu_instance(instance, &s[cpu], cpu); } } } static void print_stats(void) { struct buffer_instance *instance; int cpu; for_all_instances(instance) { if (!is_top_instance(instance)) { if (instance != first_instance) printf("\n"); printf("Buffer: %s\n\n", instance->name); } for (cpu = 0; cpu < cpu_count; cpu++) { trace_seq_do_printf(&instance->s[cpu]); printf("\n"); } } } static void destroy_stats(void) { struct buffer_instance *instance; int cpu; for_all_instances(instance) { for (cpu = 0; cpu < cpu_count; cpu++) trace_seq_destroy(&instance->s[cpu]); } } static void list_event(const char *event) { struct tracecmd_event_list *list; list = malloc_or_die(sizeof(*list)); list->next = listed_events; list->glob = event; listed_events = list; } #define ALL_EVENTS "*/*" static void record_all_events(void) { struct tracecmd_event_list *list; while (listed_events) { list = listed_events; listed_events = list->next; free(list); } list = malloc_or_die(sizeof(*list)); list->next = NULL; list->glob = ALL_EVENTS; listed_events = list; } static int recording_all_events(void) { return listed_events && strcmp(listed_events->glob, ALL_EVENTS) == 0; } static void add_trigger(struct event_list *event, const char *trigger) { if (event->trigger) { event->trigger = realloc(event->trigger, strlen(event->trigger) + strlen("\n") + strlen(trigger) + 1); strcat(event->trigger, "\n"); strcat(event->trigger, trigger); } else { event->trigger = malloc_or_die(strlen(trigger) + 1); sprintf(event->trigger, "%s", trigger); } } static int test_stacktrace_trigger(struct buffer_instance *instance) { char *path; int ret = 0; int fd; path = get_instance_file(instance, "events/sched/sched_switch/trigger"); clear_trigger(path); fd = open(path, O_WRONLY); if (fd < 0) goto out; ret = write(fd, "stacktrace", 10); if (ret != 10) ret = 0; else ret = 1; close(fd); out: tracecmd_put_tracing_file(path); return ret; } static int profile_add_event(struct buffer_instance *instance, const char *event_str, int stack) { struct event_list *event; char buf[BUFSIZ]; char *p; strcpy(buf, "events/"); strncpy(buf + 7, event_str, BUFSIZ - 7); buf[BUFSIZ-1] = 0; if ((p = strstr(buf, ":"))) { *p = '/'; p++; } if (!trace_check_file_exists(instance, buf)) return -1; /* Only add event if it isn't already added */ for (event = instance->events; event; event = event->next) { if (p && strcmp(event->event, p) == 0) break; if (strcmp(event->event, event_str) == 0) break; } if (!event) { event = malloc_or_die(sizeof(*event)); memset(event, 0, sizeof(*event)); event->event = event_str; add_event(instance, event); } if (!recording_all_events()) list_event(event_str); if (stack) { if (!event->trigger || !strstr(event->trigger, "stacktrace")) add_trigger(event, "stacktrace"); } return 0; } static void enable_profile(struct buffer_instance *instance) { int stacktrace = 0; int ret; int i; char *trigger_events[] = { "sched:sched_switch", "sched:sched_wakeup", NULL, }; char *events[] = { "exceptions:page_fault_user", "irq:irq_handler_entry", "irq:irq_handler_exit", "irq:softirq_entry", "irq:softirq_exit", "irq:softirq_raise", "sched:sched_process_exec", "raw_syscalls", NULL, }; if (!instance->plugin) { if (trace_check_file_exists(instance, "max_graph_depth")) { instance->plugin = "function_graph"; ret = write_instance_file(instance, "max_graph_depth", "1", NULL); if (ret < 0) die("could not write to max_graph_depth"); } else warning("Kernel does not support max_graph_depth\n" " Skipping user/kernel profiling"); } if (test_stacktrace_trigger(instance)) stacktrace = 1; else /* * The stacktrace trigger is not implemented with this * kernel, then we need to default to the stack trace option. * This is less efficient but still works. */ save_option("stacktrace"); for (i = 0; trigger_events[i]; i++) profile_add_event(instance, trigger_events[i], stacktrace); for (i = 0; events[i]; i++) profile_add_event(instance, events[i], 0); } static struct event_list * create_hook_event(struct buffer_instance *instance, const char *system, const char *event) { struct event_list *event_list; char *event_name; int len; if (!system) system = "*"; len = strlen(event); len += strlen(system) + 2; event_name = malloc_or_die(len); sprintf(event_name, "%s:%s", system, event); event_list = malloc_or_die(sizeof(*event_list)); memset(event_list, 0, sizeof(*event_list)); event_list->event = event_name; add_event(instance, event_list); list_event(event_name); return event_list; } static void add_hook(struct buffer_instance *instance, const char *arg) { struct event_list *event; struct hook_list *hook; hook = tracecmd_create_event_hook(arg); hook->instance = instance; hook->next = hooks; hooks = hook; /* Make sure the event is enabled */ event = create_hook_event(instance, hook->start_system, hook->start_event); create_hook_event(instance, hook->end_system, hook->end_event); if (hook->stack) { if (!event->trigger || !strstr(event->trigger, "stacktrace")) add_trigger(event, "stacktrace"); } } enum { OPT_stderr = 251, OPT_profile = 252, OPT_nosplice = 253, OPT_funcstack = 254, OPT_date = 255, }; void trace_record (int argc, char **argv) { const char *plugin = NULL; const char *output = NULL; const char *option; struct event_list *event = NULL; struct event_list *last_event; struct buffer_instance *instance = &top_instance; enum trace_type type = 0; char *pids; char *pid; char *sav; char *date2ts = NULL; int record_all = 0; int total_disable = 0; int disable = 0; int events = 0; int record = 0; int extract = 0; int stream = 0; int profile = 0; int start = 0; int run_command = 0; int neg_event = 0; int date = 0; int manual = 0; int c; init_instance(instance); cpu_count = count_cpus(); if ((record = (strcmp(argv[1], "record") == 0))) ; /* do nothing */ else if ((start = strcmp(argv[1], "start") == 0)) ; /* do nothing */ else if ((extract = strcmp(argv[1], "extract") == 0)) ; /* do nothing */ else if ((stream = strcmp(argv[1], "stream") == 0)) ; /* do nothing */ else if ((profile = strcmp(argv[1], "profile") == 0)) { events = 1; } else if (strcmp(argv[1], "stop") == 0) { int topt = 0; for (;;) { int c; c = getopt(argc-1, argv+1, "tB:"); if (c == -1) break; switch (c) { case 'h': usage(argv); break; case 'B': instance = create_instance(optarg); add_instance(instance); /* top instance requires direct access */ if (!topt && is_top_instance(first_instance)) first_instance = instance; break; case 't': /* Force to use top instance */ topt = 1; instance = &top_instance; first_instance = instance; break; default: usage(argv); } } disable_tracing(); exit(0); } else if (strcmp(argv[1], "restart") == 0) { int topt = 0; for (;;) { int c; c = getopt(argc-1, argv+1, "tB:"); if (c == -1) break; switch (c) { case 'h': usage(argv); break; case 'B': instance = create_instance(optarg); add_instance(instance); /* top instance requires direct access */ if (!topt && is_top_instance(first_instance)) first_instance = instance; break; case 't': /* Force to use top instance */ topt = 1; instance = &top_instance; first_instance = instance; break; default: usage(argv); } } enable_tracing(); exit(0); } else if (strcmp(argv[1], "reset") == 0) { int topt = 0; while ((c = getopt(argc-1, argv+1, "b:B:td")) >= 0) { switch (c) { case 'b': instance->buffer_size = atoi(optarg); /* Min buffer size is 1 */ if (strcmp(optarg, "0") == 0) instance->buffer_size = 1; break; case 'B': instance = create_instance(optarg); add_instance(instance); /* -d will remove keep */ instance->keep = 1; /* top instance requires direct access */ if (!topt && is_top_instance(first_instance)) first_instance = instance; break; case 't': /* Force to use top instance */ topt = 1; instance = &top_instance; first_instance = instance; break; case 'd': if (is_top_instance(instance)) die("Can not delete top level buffer"); instance->keep = 0; break; } } disable_all(1); set_buffer_size(); clear_filters(); clear_triggers(); remove_instances(); clear_func_filters(); exit(0); } else usage(argv); for (;;) { int option_index = 0; const char *opts; static struct option long_options[] = { {"date", no_argument, NULL, OPT_date}, {"func-stack", no_argument, NULL, OPT_funcstack}, {"nosplice", no_argument, NULL, OPT_nosplice}, {"profile", no_argument, NULL, OPT_profile}, {"stderr", no_argument, NULL, OPT_stderr}, {"help", no_argument, NULL, '?'}, {NULL, 0, NULL, 0} }; if (extract) opts = "+haf:Fp:co:O:sr:g:l:n:P:N:tb:ksiT"; else opts = "+hae:f:Fp:cC:dDo:O:s:r:vg:l:n:P:N:tb:R:B:ksSiTm:M:H:"; c = getopt_long (argc-1, argv+1, opts, long_options, &option_index); if (c == -1) break; switch (c) { case 'h': usage(argv); break; case 'a': if (!extract) { record_all = 1; record_all_events(); } break; case 'e': events = 1; event = malloc_or_die(sizeof(*event)); memset(event, 0, sizeof(*event)); event->event = optarg; add_event(instance, event); event->neg = neg_event; event->filter = NULL; last_event = event; if (!record_all) list_event(optarg); break; case 'f': if (!last_event) die("filter must come after event"); if (last_event->filter) { last_event->filter = realloc(last_event->filter, strlen(last_event->filter) + strlen("&&()") + strlen(optarg) + 1); strcat(last_event->filter, "&&("); strcat(last_event->filter, optarg); strcat(last_event->filter, ")"); } else { last_event->filter = malloc_or_die(strlen(optarg) + strlen("()") + 1); sprintf(last_event->filter, "(%s)", optarg); } break; case 'R': if (!last_event) die("trigger must come after event"); add_trigger(event, optarg); break; case 'F': filter_task = 1; break; case 'P': pids = strdup(optarg); if (!pids) die("strdup"); pid = strtok_r(pids, ",", &sav); while (pid) { add_filter_pid(atoi(pid)); pid = strtok_r(NULL, ",", &sav); } free(pids); break; case 'c': #ifdef NO_PTRACE die("-c invalid: ptrace not supported"); #endif do_ptrace = 1; break; case 'C': instance->clock = optarg; break; case 'v': neg_event = 1; break; case 'l': add_func(&instance->filter_funcs, optarg); break; case 'n': add_func(&instance->notrace_funcs, optarg); break; case 'g': add_func(&graph_funcs, optarg); break; case 'p': if (instance->plugin) die("only one plugin allowed"); for (plugin = optarg; isspace(*plugin); plugin++) ; instance->plugin = plugin; for (optarg += strlen(optarg) - 1; optarg > plugin && isspace(*optarg); optarg--) ; optarg++; optarg[0] = '\0'; break; case 'D': total_disable = 1; /* fall through */ case 'd': disable = 1; break; case 'o': if (host) die("-o incompatible with -N"); if (start) die("start does not take output\n" "Did you mean 'record'?"); if (stream) die("stream does not take output\n" "Did you mean 'record'?"); if (output) die("only one output file allowed"); output = optarg; if (profile) { int fd; /* pipe the output to this file instead of stdout */ save_stdout = dup(1); close(1); fd = open(optarg, O_WRONLY | O_CREAT | O_TRUNC, 0644); if (fd < 0) die("can't write to %s", optarg); if (fd != 1) { dup2(fd, 1); close(fd); } } break; case 'O': option = optarg; save_option(option); break; case 'T': save_option("stacktrace"); break; case 'H': add_hook(instance, optarg); events = 1; break; case 's': if (extract) { if (optarg) usage(argv); recorder_flags |= TRACECMD_RECORD_SNAPSHOT; break; } if (!optarg) usage(argv); sleep_time = atoi(optarg); break; case 'S': manual = 1; /* User sets events for profiling */ if (!event) events = 0; break; case 'r': rt_prio = atoi(optarg); break; case 'N': if (!record) die("-N only available with record"); if (output) die("-N incompatible with -o"); host = optarg; break; case 'm': if (max_kb) die("-m can only be specified once"); if (!record) die("only record take 'm' option"); max_kb = atoi(optarg); break; case 'M': instance->cpumask = optarg; break; case 't': use_tcp = 1; break; case 'b': instance->buffer_size = atoi(optarg); break; case 'B': instance = create_instance(optarg); add_instance(instance); if (profile) instance->profile = 1; break; case 'k': keep = 1; break; case 'i': ignore_event_not_found = 1; break; case OPT_date: date = 1; break; case OPT_funcstack: func_stack = 1; break; case OPT_nosplice: recorder_flags |= TRACECMD_RECORD_NOSPLICE; break; case OPT_profile: instance->profile = 1; events = 1; break; case OPT_stderr: /* if -o was used (for profile), ignore this */ if (save_stdout >= 0) break; save_stdout = dup(1); close(1); dup2(2, 1); break; default: usage(argv); } } if (do_ptrace && !filter_task && (filter_pid < 0)) die(" -c can only be used with -F or -P"); if ((argc - optind) >= 2) { if (start) die("Command start does not take any commands\n" "Did you mean 'record'?"); if (extract) die("Command extract does not take any commands\n" "Did you mean 'record'?"); run_command = 1; } /* * If this is a profile run, and no instances were set, * then enable profiling on the top instance. */ if (profile && !buffer_instances) top_instance.profile = 1; /* * If top_instance doesn't have any plugins or events, then * remove it from being processed. */ if (!extract && !__check_doing_something(&top_instance)) { if (!buffer_instances) die("No instances reference??"); first_instance = buffer_instances; } if (!extract) check_doing_something(); check_function_plugin(); if (output) output_file = output; /* Save the state of tracing_on before starting */ for_all_instances(instance) { if (!manual && instance->profile) enable_profile(instance); instance->tracing_on_init_val = read_tracing_on(instance); /* Some instances may not be created yet */ if (instance->tracing_on_init_val < 0) instance->tracing_on_init_val = 1; } /* Extracting data records all events in the system. */ if (extract && !record_all) record_all_events(); if (!extract) make_instances(); if (events) expand_event_list(); page_size = getpagesize(); if (!extract) { fset = set_ftrace(!disable, total_disable); disable_all(1); for_all_instances(instance) set_clock(instance); /* Record records the date first */ if (record && date) date2ts = get_date_to_ts(); for_all_instances(instance) { set_funcs(instance); set_mask(instance); } if (events) { for_all_instances(instance) enable_events(instance); } set_buffer_size(); } if (record) type = TRACE_TYPE_RECORD; else if (stream) type = TRACE_TYPE_STREAM; else if (extract) type = TRACE_TYPE_EXTRACT; else if (profile) /* PROFILE includes the STREAM bit */ type = TRACE_TYPE_PROFILE; else type = TRACE_TYPE_START; update_plugins(type); set_options(); allocate_seq(); if (type & (TRACE_TYPE_RECORD | TRACE_TYPE_STREAM)) { signal(SIGINT, finish); if (!latency) start_threads(type); } if (extract) { flush_threads(); } else { if (!(type & (TRACE_TYPE_RECORD | TRACE_TYPE_STREAM))) { update_task_filter(); enable_tracing(); exit(0); } if (run_command) run_cmd(type, (argc - optind) - 1, &argv[optind + 1]); else { update_task_filter(); enable_tracing(); /* We don't ptrace ourself */ if (do_ptrace && filter_pid >= 0) ptrace_attach(filter_pid); /* sleep till we are woken with Ctrl^C */ printf("Hit Ctrl^C to stop recording\n"); while (!finished) trace_or_sleep(type); } disable_tracing(); if (!latency) stop_threads(type); } record_stats(); if (!keep) disable_all(0); printf("Kernel buffer statistics:\n" " Note: \"entries\" are the entries left in the kernel ring buffer and are not\n" " recorded in the trace data. They should all be zero.\n\n"); print_stats(); /* extract records the date after extraction */ if (extract && date) { /* * We need to start tracing, don't let other traces * screw with our trace_marker. */ disable_all(1); date2ts = get_date_to_ts(); } if (record || extract) { record_data(date2ts); delete_thread_data(); } destroy_stats(); if (keep) exit(0); update_reset_files(); update_reset_triggers(); if (clear_function_filters) clear_func_filters(); set_plugin("nop"); remove_instances(); /* If tracing_on was enabled before we started, set it on now */ for_all_instances(instance) { if (instance->keep) write_tracing_on(instance, instance->tracing_on_init_val); } if (host) tracecmd_output_close(network_handle); if (profile) trace_profile(); exit(0); } trace-cmd-2.5.3/trace-recorder.c000066400000000000000000000242601246701203100164250ustar00rootroot00000000000000/* * Copyright (C) 2009, 2010 Red Hat Inc, Steven Rostedt * * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ * This program is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; * version 2.1 of the License (not later!) * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this program; if not, see * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA * * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ */ #define _LARGEFILE64_SOURCE #include #include #include #include #include #include #include #include #include #include #include #include #include #include "trace-cmd.h" struct tracecmd_recorder { int fd; int fd1; int fd2; int trace_fd; int brass[2]; int page_size; int cpu; int stop; int max; int pages; int count; unsigned fd_flags; unsigned flags; }; static int append_file(int size, int dst, int src) { char buf[size]; int r; lseek64(src, 0, SEEK_SET); /* If there's an error, then we are pretty much screwed :-p */ do { r = read(src, buf, size); if (r < 0) return r; r = write(dst, buf, r); if (r < 0) return r; } while (r); return 0; } void tracecmd_free_recorder(struct tracecmd_recorder *recorder) { if (!recorder) return; if (recorder->max) { /* Need to put everything into fd1 */ if (recorder->fd == recorder->fd1) { int ret; /* * Crap, the older data is in fd2, and we need * to append fd1 onto it, and then copy over to fd1 */ ret = append_file(recorder->page_size, recorder->fd2, recorder->fd1); /* Error on copying, then just keep fd1 */ if (ret) { lseek64(recorder->fd1, 0, SEEK_END); goto close; } lseek64(recorder->fd1, 0, SEEK_SET); ftruncate(recorder->fd1, 0); } append_file(recorder->page_size, recorder->fd1, recorder->fd2); } close: if (recorder->trace_fd >= 0) close(recorder->trace_fd); if (recorder->fd1 >= 0) close(recorder->fd1); if (recorder->fd2 >= 0) close(recorder->fd2); free(recorder); } struct tracecmd_recorder * tracecmd_create_buffer_recorder_fd2(int fd, int fd2, int cpu, unsigned flags, const char *buffer, int maxkb) { struct tracecmd_recorder *recorder; char *path = NULL; int ret; recorder = malloc_or_die(sizeof(*recorder)); if (!recorder) return NULL; recorder->cpu = cpu; recorder->flags = flags; recorder->fd_flags = 1; /* SPLICE_F_MOVE */ if (!(recorder->flags & TRACECMD_RECORD_BLOCK)) recorder->fd_flags |= 2; /* and NON_BLOCK */ /* Init to know what to free and release */ recorder->trace_fd = -1; recorder->brass[0] = -1; recorder->brass[1] = -1; recorder->page_size = getpagesize(); if (maxkb) { int kb_per_page = recorder->page_size >> 10; if (!kb_per_page) kb_per_page = 1; recorder->max = maxkb / kb_per_page; /* keep max half */ recorder->max >>= 1; if (!recorder->max) recorder->max = 1; } else recorder->max = 0; recorder->count = 0; recorder->pages = 0; /* fd always points to what to write to */ recorder->fd = fd; recorder->fd1 = fd; recorder->fd2 = fd2; path = malloc_or_die(strlen(buffer) + 40); if (!path) goto out_free; if (flags & TRACECMD_RECORD_SNAPSHOT) sprintf(path, "%s/per_cpu/cpu%d/snapshot_raw", buffer, cpu); else sprintf(path, "%s/per_cpu/cpu%d/trace_pipe_raw", buffer, cpu); recorder->trace_fd = open(path, O_RDONLY); if (recorder->trace_fd < 0) goto out_free; free(path); if ((recorder->flags & TRACECMD_RECORD_NOSPLICE) == 0) { ret = pipe(recorder->brass); if (ret < 0) goto out_free; } return recorder; out_free: free(path); tracecmd_free_recorder(recorder); return NULL; } struct tracecmd_recorder * tracecmd_create_buffer_recorder_fd(int fd, int cpu, unsigned flags, const char *buffer) { return tracecmd_create_buffer_recorder_fd2(fd, -1, cpu, flags, buffer, 0); } struct tracecmd_recorder * tracecmd_create_buffer_recorder(const char *file, int cpu, unsigned flags, const char *buffer) { struct tracecmd_recorder *recorder; int fd; fd = open(file, O_WRONLY | O_CREAT | O_TRUNC | O_LARGEFILE, 0644); if (fd < 0) return NULL; recorder = tracecmd_create_buffer_recorder_fd(fd, cpu, flags, buffer); if (!recorder) { close(fd); unlink(file); } return recorder; } struct tracecmd_recorder * tracecmd_create_buffer_recorder_maxkb(const char *file, int cpu, unsigned flags, const char *buffer, int maxkb) { struct tracecmd_recorder *recorder = NULL; char *file2; int len; int fd; int fd2; if (!maxkb) return tracecmd_create_buffer_recorder(file, cpu, flags, buffer); len = strlen(file); file2 = malloc(len + 3); if (!file2) return NULL; sprintf(file2, "%s.1", file); fd = open(file, O_RDWR | O_CREAT | O_TRUNC | O_LARGEFILE, 0644); if (fd < 0) goto out; fd2 = open(file2, O_RDWR | O_CREAT | O_TRUNC | O_LARGEFILE, 0644); if (fd < 0) goto err; recorder = tracecmd_create_buffer_recorder_fd2(fd, fd2, cpu, flags, buffer, maxkb); if (!recorder) goto err2; out: /* Unlink file2, we need to add everything to file at the end */ unlink(file2); free(file2); return recorder; err2: close(fd2); err: close(fd); unlink(file); goto out; } struct tracecmd_recorder *tracecmd_create_recorder_fd(int fd, int cpu, unsigned flags) { const char *tracing; tracing = tracecmd_get_tracing_dir(); if (!tracing) { errno = ENODEV; return NULL; } return tracecmd_create_buffer_recorder_fd(fd, cpu, flags, tracing); } struct tracecmd_recorder *tracecmd_create_recorder(const char *file, int cpu, unsigned flags) { const char *tracing; tracing = tracecmd_get_tracing_dir(); if (!tracing) { errno = ENODEV; return NULL; } return tracecmd_create_buffer_recorder(file, cpu, flags, tracing); } struct tracecmd_recorder * tracecmd_create_recorder_maxkb(const char *file, int cpu, unsigned flags, int maxkb) { const char *tracing; tracing = tracecmd_get_tracing_dir(); if (!tracing) { errno = ENODEV; return NULL; } return tracecmd_create_buffer_recorder_maxkb(file, cpu, flags, tracing, maxkb); } static inline void update_fd(struct tracecmd_recorder *recorder, int size) { int fd; if (!recorder->max) return; recorder->count += size; if (recorder->count >= recorder->page_size) { recorder->count = 0; recorder->pages++; } if (recorder->pages < recorder->max) return; recorder->pages = 0; fd = recorder->fd; /* Swap fd to next file. */ if (fd == recorder->fd1) fd = recorder->fd2; else fd = recorder->fd1; /* Zero out the new file we are writing to */ lseek64(fd, 0, SEEK_SET); ftruncate(fd, 0); recorder->fd = fd; } /* * Returns -1 on error. * or bytes of data read. */ static long splice_data(struct tracecmd_recorder *recorder) { long ret; ret = splice(recorder->trace_fd, NULL, recorder->brass[1], NULL, recorder->page_size, 1 /* SPLICE_F_MOVE */); if (ret < 0) { if (errno != EAGAIN && errno != EINTR) { warning("recorder error in splice input"); return -1; } if (errno == EINTR) return 0; } else if (ret == 0) return 0; ret = splice(recorder->brass[0], NULL, recorder->fd, NULL, recorder->page_size, recorder->fd_flags); if (ret < 0) { if (errno != EAGAIN && errno != EINTR) { warning("recorder error in splice output"); return -1; } ret = 0; } else update_fd(recorder, ret); return ret; } /* * Returns -1 on error. * or bytes of data read. */ static long read_data(struct tracecmd_recorder *recorder) { char buf[recorder->page_size]; long ret; ret = read(recorder->trace_fd, buf, recorder->page_size); if (ret < 0) { if (errno != EAGAIN && errno != EINTR) { warning("recorder error in read output"); return -1; } ret = 0; } if (ret > 0) { write(recorder->fd, buf, ret); update_fd(recorder, ret); } return ret; } static void set_nonblock(struct tracecmd_recorder *recorder) { long flags; /* Do not block on reads for flushing */ flags = fcntl(recorder->trace_fd, F_GETFL); fcntl(recorder->trace_fd, F_SETFL, flags | O_NONBLOCK); /* Do not block on streams for write */ recorder->fd_flags |= 2; /* NON_BLOCK */ } long tracecmd_flush_recording(struct tracecmd_recorder *recorder) { char buf[recorder->page_size]; long total = 0; long wrote = 0; long ret; set_nonblock(recorder); do { if (recorder->flags & TRACECMD_RECORD_NOSPLICE) ret = read_data(recorder); else ret = splice_data(recorder); if (ret < 0) return ret; total += ret; } while (ret); /* splice only reads full pages */ do { ret = read(recorder->trace_fd, buf, recorder->page_size); if (ret > 0) { write(recorder->fd, buf, ret); wrote += ret; } } while (ret > 0); /* Make sure we finish off with a page size boundary */ wrote &= recorder->page_size - 1; if (wrote) { memset(buf, 0, recorder->page_size); write(recorder->fd, buf, recorder->page_size - wrote); total += recorder->page_size; } return total; } int tracecmd_start_recording(struct tracecmd_recorder *recorder, unsigned long sleep) { struct timespec req; long read = 1; long ret; recorder->stop = 0; do { /* Only sleep if we did not read anything last time */ if (!read && sleep) { req.tv_sec = sleep / 1000000; req.tv_nsec = (sleep % 1000000) * 1000; nanosleep(&req, NULL); } read = 0; do { if (recorder->flags & TRACECMD_RECORD_NOSPLICE) ret = read_data(recorder); else ret = splice_data(recorder); if (ret < 0) return ret; read += ret; } while (ret); } while (!recorder->stop); /* Flush out the rest */ ret = tracecmd_flush_recording(recorder); if (ret < 0) return ret; return 0; } void tracecmd_stop_recording(struct tracecmd_recorder *recorder) { if (!recorder) return; set_nonblock(recorder); recorder->stop = 1; } trace-cmd-2.5.3/trace-restore.c000066400000000000000000000071361246701203100163060ustar00rootroot00000000000000/* * Copyright (C) 2009, 2010 Red Hat Inc, Steven Rostedt * * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; version 2 of the License (not later!) * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; if not, see * * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ */ #define _LARGEFILE64_SOURCE #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include "trace-local.h" void trace_restore (int argc, char **argv) { struct tracecmd_output *handle; const char *output_file = "trace.dat"; const char *output = NULL; const char *input = NULL; const char *tracing_dir = NULL; const char *kallsyms = NULL; struct stat st1; struct stat st2; int first_arg; int create_only = 0; int args; int c; if (argc < 2) usage(argv); if (strcmp(argv[1], "restore") != 0) usage(argv); while ((c = getopt(argc-1, argv+1, "+hco:i:t:k:")) >= 0) { switch (c) { case 'h': usage(argv); break; case 'c': if (input) die("-c and -i are incompatible"); create_only = 1; /* make output default to partial */ output_file = "trace-partial.dat"; break; case 't': tracing_dir = optarg; break; case 'k': kallsyms = optarg; break; case 'o': if (output) die("only one output file allowed"); output = optarg; break; case 'i': if (input) die("only one input file allowed"); if (create_only) die("-c and -i are incompatible"); input = optarg; break; default: usage(argv); } } if (!output) output = output_file; if ((argc - optind) <= 1) { if (!create_only) { warning("No data files found"); usage(argv); } handle = tracecmd_create_init_file_override(output, tracing_dir, kallsyms); if (!handle) die("Unabled to create output file %s", output); tracecmd_output_close(handle); exit(0); } first_arg = optind + 1; args = argc - first_arg; printf("first = %d %s args=%d\n", first_arg, argv[first_arg], args); /* Make sure input and output are not the same file */ if (input && output) { if (stat(input, &st1) < 0) die("%s:", input); /* output exists? otherwise we don't care */ if (stat(output, &st2) == 0) { if (st1.st_ino == st2.st_ino && st1.st_dev == st2.st_dev) die("input and output file are the same"); } } if (input) { struct tracecmd_input *ihandle; ihandle = tracecmd_alloc(input); if (!ihandle) die("error reading file %s", input); /* make sure headers are ok */ if (tracecmd_read_headers(ihandle) < 0) die("error reading file %s headers", input); handle = tracecmd_copy(ihandle, output); tracecmd_close(ihandle); } else handle = tracecmd_create_init_file(output); if (!handle) die("error writing to %s", output); if (tracecmd_append_cpu_data(handle, args, &argv[first_arg]) < 0) die("failed to append data"); return; } trace-cmd-2.5.3/trace-seq.c000066400000000000000000000133521246701203100154100ustar00rootroot00000000000000/* * Copyright (C) 2009 Red Hat Inc, Steven Rostedt * * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ * This program is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; * version 2.1 of the License (not later!) * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this program; if not, see * * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ */ #include #include #include #include #include "bug.h" #include "event-parse.h" #include "event-utils.h" /* * The TRACE_SEQ_POISON is to catch the use of using * a trace_seq structure after it was destroyed. */ #define TRACE_SEQ_POISON ((void *)0xdeadbeef) #define TRACE_SEQ_CHECK(s) \ do { \ if (WARN_ONCE((s)->buffer == TRACE_SEQ_POISON, \ "Usage of trace_seq after it was destroyed")) \ (s)->state = TRACE_SEQ__BUFFER_POISONED; \ } while (0) #define TRACE_SEQ_CHECK_RET_N(s, n) \ do { \ TRACE_SEQ_CHECK(s); \ if ((s)->state != TRACE_SEQ__GOOD) \ return n; \ } while (0) #define TRACE_SEQ_CHECK_RET(s) TRACE_SEQ_CHECK_RET_N(s, ) #define TRACE_SEQ_CHECK_RET0(s) TRACE_SEQ_CHECK_RET_N(s, 0) /** * trace_seq_init - initialize the trace_seq structure * @s: a pointer to the trace_seq structure to initialize */ void trace_seq_init(struct trace_seq *s) { s->len = 0; s->readpos = 0; s->buffer_size = TRACE_SEQ_BUF_SIZE; s->buffer = malloc(s->buffer_size); if (s->buffer != NULL) s->state = TRACE_SEQ__GOOD; else s->state = TRACE_SEQ__MEM_ALLOC_FAILED; } /** * trace_seq_reset - re-initialize the trace_seq structure * @s: a pointer to the trace_seq structure to reset */ void trace_seq_reset(struct trace_seq *s) { if (!s) return; TRACE_SEQ_CHECK(s); s->len = 0; s->readpos = 0; } /** * trace_seq_destroy - free up memory of a trace_seq * @s: a pointer to the trace_seq to free the buffer * * Only frees the buffer, not the trace_seq struct itself. */ void trace_seq_destroy(struct trace_seq *s) { if (!s) return; TRACE_SEQ_CHECK_RET(s); free(s->buffer); s->buffer = TRACE_SEQ_POISON; } static void expand_buffer(struct trace_seq *s) { char *buf; buf = realloc(s->buffer, s->buffer_size + TRACE_SEQ_BUF_SIZE); if (WARN_ONCE(!buf, "Can't allocate trace_seq buffer memory")) { s->state = TRACE_SEQ__MEM_ALLOC_FAILED; return; } s->buffer = buf; s->buffer_size += TRACE_SEQ_BUF_SIZE; } /** * trace_seq_printf - sequence printing of trace information * @s: trace sequence descriptor * @fmt: printf format string * * It returns 0 if the trace oversizes the buffer's free * space, 1 otherwise. * * The tracer may use either sequence operations or its own * copy to user routines. To simplify formating of a trace * trace_seq_printf is used to store strings into a special * buffer (@s). Then the output may be either used by * the sequencer or pulled into another buffer. */ int trace_seq_printf(struct trace_seq *s, const char *fmt, ...) { va_list ap; int len; int ret; try_again: TRACE_SEQ_CHECK_RET0(s); len = (s->buffer_size - 1) - s->len; va_start(ap, fmt); ret = vsnprintf(s->buffer + s->len, len, fmt, ap); va_end(ap); if (ret >= len) { expand_buffer(s); goto try_again; } s->len += ret; return 1; } /** * trace_seq_vprintf - sequence printing of trace information * @s: trace sequence descriptor * @fmt: printf format string * * The tracer may use either sequence operations or its own * copy to user routines. To simplify formating of a trace * trace_seq_printf is used to store strings into a special * buffer (@s). Then the output may be either used by * the sequencer or pulled into another buffer. */ int trace_seq_vprintf(struct trace_seq *s, const char *fmt, va_list args) { int len; int ret; try_again: TRACE_SEQ_CHECK_RET0(s); len = (s->buffer_size - 1) - s->len; ret = vsnprintf(s->buffer + s->len, len, fmt, args); if (ret >= len) { expand_buffer(s); goto try_again; } s->len += ret; return len; } /** * trace_seq_puts - trace sequence printing of simple string * @s: trace sequence descriptor * @str: simple string to record * * The tracer may use either the sequence operations or its own * copy to user routines. This function records a simple string * into a special buffer (@s) for later retrieval by a sequencer * or other mechanism. */ int trace_seq_puts(struct trace_seq *s, const char *str) { int len; TRACE_SEQ_CHECK_RET0(s); len = strlen(str); while (len > ((s->buffer_size - 1) - s->len)) expand_buffer(s); TRACE_SEQ_CHECK_RET0(s); memcpy(s->buffer + s->len, str, len); s->len += len; return len; } int trace_seq_putc(struct trace_seq *s, unsigned char c) { TRACE_SEQ_CHECK_RET0(s); while (s->len >= (s->buffer_size - 1)) expand_buffer(s); TRACE_SEQ_CHECK_RET0(s); s->buffer[s->len++] = c; return 1; } void trace_seq_terminate(struct trace_seq *s) { TRACE_SEQ_CHECK_RET(s); /* There's always one character left on the buffer */ s->buffer[s->len] = 0; } int trace_seq_do_printf(struct trace_seq *s) { TRACE_SEQ_CHECK(s); switch (s->state) { case TRACE_SEQ__GOOD: return printf("%.*s", s->len, s->buffer); case TRACE_SEQ__BUFFER_POISONED: puts("Usage of trace_seq after it was destroyed"); break; case TRACE_SEQ__MEM_ALLOC_FAILED: puts("Can't allocate trace_seq buffer memory"); break; } return -1; } trace-cmd-2.5.3/trace-snapshot.c000066400000000000000000000055421246701203100164610ustar00rootroot00000000000000/* * Copyright (C) 2013 Red Hat Inc, Steven Rostedt * * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; version 2 of the License (not later!) * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; if not, see * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA * * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ */ #include #include #include #include #include #include #include #include #include "trace-local.h" static void write_file(const char *name, char *val) { char *path; int fd; ssize_t n; path = tracecmd_get_tracing_file(name); fd = open(path, O_WRONLY); if (fd < 0) die("writing %s", path); n = write(fd, val, strlen(val)); if (n < 0) die("failed to write '%d' to %s\n", path); tracecmd_put_tracing_file(path); close(fd); } void trace_snapshot (int argc, char **argv) { const char *buffer = NULL; const char *file = "snapshot"; struct stat st; char *name; char cpu_path[128]; int take_snap = 0; int reset_snap = 0; int free_snap = 0; int cpu = -1; int ret; int c; if (argc < 2) usage(argv); if (strcmp(argv[1], "snapshot") != 0) usage(argv); while ((c = getopt(argc-1, argv+1, "srfB:c:")) >= 0) { switch (c) { case 'h': usage(argv); break; case 's': take_snap = 1; if (free_snap) die("can't take snapshot and free it at the same time"); break; case 'f': free_snap = 1; if (take_snap) die("can't take snapshot and free it at the same time"); break; case 'r': reset_snap = 1; break; case 'B': if (buffer) die("Can only do one buffer at a time"); buffer = optarg; break; case 'c': if (cpu >= 0) die("Can only do one CPU (or all) at a time"); cpu = atoi(optarg); break; default: usage(argv); } } if (cpu >= 0) { snprintf(cpu_path, 128, "per_cpu/cpu%d/%s", cpu, file); file = cpu_path; } name = tracecmd_get_tracing_file(file); ret = stat(name, &st); if (ret < 0) die("Snapshot feature is not supported by this kernel"); tracecmd_put_tracing_file(name); if (!reset_snap && !take_snap && !free_snap) { show_file(file); exit(0); } if (reset_snap) write_file(file, "2"); if (free_snap) write_file(file, "0"); if (take_snap) write_file(file, "1"); } trace-cmd-2.5.3/trace-split.c000066400000000000000000000277521246701203100157640ustar00rootroot00000000000000/* * Copyright (C) 2010 Red Hat Inc, Steven Rostedt * * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; version 2 of the License (not later!) * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; if not, see * * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ */ #define _LARGEFILE64_SOURCE #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include "trace-local.h" static unsigned int page_size; static const char *default_input_file = "trace.dat"; static const char *input_file; enum split_types { SPLIT_NONE, /* The order of these must be reverse of the case statement in the options */ SPLIT_SECONDS, SPLIT_MSECS, SPLIT_USECS, SPLIT_EVENTS, SPLIT_PAGES, SPLIT_NR_TYPES, }; struct cpu_data { unsigned long long ts; unsigned long long offset; struct pevent_record *record; int cpu; int fd; int index; void *commit; void *page; char *file; }; static int create_type_len(struct pevent *pevent, int time, int len) { static int bigendian = -1; char *ptr; int test; if (bigendian < 0) { test = 0x4321; ptr = (char *)&test; if (*ptr == 0x21) bigendian = 0; else bigendian = 1; } if (pevent->file_bigendian) time |= (len << 27); else time = (time << 5) | len; return __data2host4(pevent, time); } static int write_record(struct tracecmd_input *handle, struct pevent_record *record, struct cpu_data *cpu_data, enum split_types type) { unsigned long long diff; struct pevent *pevent; void *page; int len; char *ptr; int index = 0; int time; page = cpu_data->page; pevent = tracecmd_get_pevent(handle); ptr = page + cpu_data->index; diff = record->ts - cpu_data->ts; if (diff > (1 << 27)) { /* Add a time stamp */ len = RINGBUF_TYPE_TIME_EXTEND; time = (unsigned int)(diff & ((1ULL << 27) - 1)); time = create_type_len(pevent, time, len); *(unsigned *)ptr = time; ptr += 4; time = (unsigned int)(diff >> 27); *(unsigned *)ptr = __data2host4(pevent, time); cpu_data->ts = record->ts; cpu_data->index += 8; return 0; } if (record->size) { if (record->size < 28 * 4) len = record->size / 4; else len = 0; } time = (unsigned)diff; time = create_type_len(pevent, time, len); memcpy(ptr, &time, 4); ptr += 4; index = 4; if (!len) { len = record->size + 4; *(unsigned *)ptr = __data2host4(pevent, len); ptr += 4; index += 4; } len = (record->size + 3) & ~3; index += len; memcpy(ptr, record->data, len); cpu_data->index += index; cpu_data->ts = record->ts; return 1; } static void write_page(struct pevent *pevent, struct cpu_data *cpu_data, int long_size) { if (long_size == 8) *(unsigned long long *)cpu_data->commit = __data2host8(pevent, (unsigned long long)cpu_data->index - 16); else *(unsigned int *)cpu_data->commit = __data2host4(pevent, cpu_data->index - 12); write(cpu_data->fd, cpu_data->page, page_size); } static struct pevent_record *read_record(struct tracecmd_input *handle, int percpu, int *cpu) { if (percpu) return tracecmd_read_data(handle, *cpu); return tracecmd_read_next_data(handle, cpu); } static void set_cpu_time(struct tracecmd_input *handle, int percpu, unsigned long long start, int cpu, int cpus) { if (percpu) { tracecmd_set_cpu_to_timestamp(handle, cpu, start); return; } for (cpu = 0; cpu < cpus; cpu++) tracecmd_set_cpu_to_timestamp(handle, cpu, start); return; } static int parse_cpu(struct tracecmd_input *handle, struct cpu_data *cpu_data, unsigned long long start, unsigned long long end, int count_limit, int percpu, int cpu, enum split_types type) { struct pevent_record *record; struct pevent *pevent; void *ptr; int page_size; int long_size = 0; int cpus; int count = 0; int pages = 0; cpus = tracecmd_cpus(handle); long_size = tracecmd_long_size(handle); page_size = tracecmd_page_size(handle); pevent = tracecmd_get_pevent(handle); /* Force new creation of first page */ if (percpu) { cpu_data[cpu].index = page_size + 1; cpu_data[cpu].page = NULL; } else { for (cpu = 0; cpu < cpus; cpu++) { cpu_data[cpu].index = page_size + 1; cpu_data[cpu].page = NULL; } } /* * Get the cpu pointers up to the start of the * start time stamp. */ record = read_record(handle, percpu, &cpu); if (start) { set_cpu_time(handle, percpu, start, cpu, cpus); while (record && record->ts < start) { free_record(record); record = read_record(handle, percpu, &cpu); } } else if (record) start = record->ts; while (record && (!end || record->ts <= end)) { if (cpu_data[cpu].index + record->record_size > page_size) { if (type == SPLIT_PAGES && ++pages > count_limit) break; if (cpu_data[cpu].page) write_page(pevent, &cpu_data[cpu], long_size); else cpu_data[cpu].page = malloc_or_die(page_size); memset(cpu_data[cpu].page, 0, page_size); ptr = cpu_data[cpu].page; *(unsigned long long*)ptr = __data2host8(pevent, record->ts); cpu_data[cpu].ts = record->ts; ptr += 8; cpu_data[cpu].commit = ptr; ptr += long_size; cpu_data[cpu].index = 8 + long_size; } cpu_data[cpu].offset = record->offset; if (write_record(handle, record, &cpu_data[cpu], type)) { free_record(record); record = read_record(handle, percpu, &cpu); /* if we hit the end of the cpu, clear the offset */ if (!record) { if (percpu) cpu_data[cpu].offset = 0; else for (cpu = 0; cpu < cpus; cpu++) cpu_data[cpu].offset = 0; } switch (type) { case SPLIT_NONE: break; case SPLIT_SECONDS: if (record && record->ts > (start + (unsigned long long)count_limit * 1000000000ULL)) { free_record(record); record = NULL; } break; case SPLIT_MSECS: if (record && record->ts > (start + (unsigned long long)count_limit * 1000000ULL)) { free_record(record); record = NULL; } break; case SPLIT_USECS: if (record && record->ts > (start + (unsigned long long)count_limit * 1000ULL)) { free_record(record); record = NULL; } break; case SPLIT_EVENTS: if (++count >= count_limit) { free_record(record); record = NULL; } break; default: break; } } } if (record) free_record(record); if (percpu) { if (cpu_data[cpu].page) { write_page(pevent, &cpu_data[cpu], long_size); free(cpu_data[cpu].page); cpu_data[cpu].page = NULL; } } else { for (cpu = 0; cpu < cpus; cpu++) { if (cpu_data[cpu].page) { write_page(pevent, &cpu_data[cpu], long_size); free(cpu_data[cpu].page); cpu_data[cpu].page = NULL; } } } return 0; } static double parse_file(struct tracecmd_input *handle, const char *output_file, unsigned long long start, unsigned long long end, int percpu, int only_cpu, int count, enum split_types type) { unsigned long long current; struct tracecmd_output *ohandle; struct cpu_data *cpu_data; struct pevent_record *record; char **cpu_list; char *output; char *base; char *file; char *dir; int cpus; int cpu; int fd; output = strdup(output_file); dir = dirname(output); base = basename(output); ohandle = tracecmd_copy(handle, output_file); cpus = tracecmd_cpus(handle); cpu_data = malloc_or_die(sizeof(*cpu_data) * cpus); for (cpu = 0; cpu < cpus; cpu++) { file = malloc_or_die(strlen(output_file) + 50); sprintf(file, "%s/.tmp.%s.%d", dir, base, cpu); fd = open(file, O_WRONLY | O_CREAT | O_TRUNC | O_LARGEFILE, 0644); cpu_data[cpu].cpu = cpu; cpu_data[cpu].fd = fd; cpu_data[cpu].file = file; cpu_data[cpu].offset = 0; if (start) tracecmd_set_cpu_to_timestamp(handle, cpu, start); } if (only_cpu >= 0) { parse_cpu(handle, cpu_data, start, end, count, 1, only_cpu, type); } else if (percpu) { for (cpu = 0; cpu < cpus; cpu++) parse_cpu(handle, cpu_data, start, end, count, percpu, cpu, type); } else parse_cpu(handle, cpu_data, start, end, count, percpu, -1, type); cpu_list = malloc_or_die(sizeof(*cpu_list) * cpus); for (cpu = 0; cpu < cpus; cpu ++) cpu_list[cpu] = cpu_data[cpu].file; tracecmd_append_cpu_data(ohandle, cpus, cpu_list); current = end; for (cpu = 0; cpu < cpus; cpu++) { /* Set the tracecmd cursor to the next set of records */ if (cpu_data[cpu].offset) { record = tracecmd_read_at(handle, cpu_data[cpu].offset, NULL); if (record && (!current || record->ts > current)) current = record->ts + 1; free_record(record); } unlink(cpu_data[cpu].file); free(cpu_data[cpu].file); } free(cpu_data); free(cpu_list); free(output); tracecmd_output_close(ohandle); return current; } void trace_split (int argc, char **argv) { struct tracecmd_input *handle; unsigned long long start_ns = 0, end_ns = 0; unsigned long long current; double start, end; char *endptr; char *output = NULL; char *output_file; enum split_types split_type = SPLIT_NONE; enum split_types type = SPLIT_NONE; int count; int repeat = 0; int percpu = 0; int cpu = -1; int ac; int c; if (strcmp(argv[1], "split") != 0) usage(argv); while ((c = getopt(argc-1, argv+1, "+ho:i:s:m:u:e:p:rcC:")) >= 0) { switch (c) { case 'h': usage(argv); break; case 'p': type++; case 'e': type++; case 'u': type++; case 'm': type++; case 's': type++; if (split_type != SPLIT_NONE) die("Only one type of split is allowed"); count = atoi(optarg); if (count <= 0) die("Units must be greater than 0"); split_type = type; /* Spliting by pages only makes sense per cpu */ if (type == SPLIT_PAGES) percpu = 1; break; case 'r': repeat = 1; break; case 'c': percpu = 1; break; case 'C': cpu = atoi(optarg); break; case 'o': if (output) die("only one output file allowed"); output = strdup(optarg); break; case 'i': input_file = optarg; break; default: usage(argv); } } ac = (argc - optind); if (ac >= 2) { optind++; start = strtod(argv[optind], &endptr); if (ac > 3) usage(argv); /* Make sure a true start value was entered */ if (*endptr != 0) die("Start value not floating point: %s", argv[optind]); start_ns = (unsigned long long)(start * 1000000000.0); optind++; if (ac == 3) { end = strtod(argv[optind], &endptr); /* Make sure a true end value was entered */ if (*endptr != 0) die("End value not floating point: %s", argv[optind]); end_ns = (unsigned long long)(end * 1000000000.0); if (end_ns < start_ns) die("Error: end is less than start"); } } if (!input_file) input_file = default_input_file; handle = tracecmd_open(input_file); if (!handle) die("error reading %s", input_file); page_size = tracecmd_page_size(handle); if (!output) output = strdup(input_file); if (!repeat) { output = realloc(output, strlen(output) + 3); strcat(output, ".1"); } current = start_ns; output_file = malloc_or_die(strlen(output) + 50); c = 1; do { if (repeat) sprintf(output_file, "%s.%04d", output, c++); else strcpy(output_file, output); current = parse_file(handle, output_file, start_ns, end_ns, percpu, cpu, count, type); if (!repeat) break; start_ns = 0; } while (current && (!end_ns || current < end_ns)); free(output); free(output_file); tracecmd_close(handle); return; } trace-cmd-2.5.3/trace-stack.c000066400000000000000000000100601246701203100157160ustar00rootroot00000000000000/* * Copyright (C) 2009, 2010 Red Hat Inc, Steven Rostedt * * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; version 2 of the License (not later!) * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; if not, see * * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ */ #include #include #include #include #include #include #include #include #include #include #include "trace-local.h" #define PROC_FILE "/proc/sys/kernel/stack_tracer_enabled" enum stack_type { STACK_START, STACK_STOP, STACK_RESET, STACK_REPORT }; static void test_available(void) { struct stat buf; int fd; fd = stat(PROC_FILE, &buf); if (fd < 0) die("stack tracer not configured on running kernel"); } static char read_proc(void) { char buf[1]; int fd; int n; fd = open(PROC_FILE, O_RDONLY); if (fd < 0) die("reading %s", PROC_FILE); n = read(fd, buf, 1); close(fd); if (n != 1) die("error reading %s", PROC_FILE); return buf[0]; } static void start_stop_trace(char val) { char buf[1]; int fd; int n; buf[0] = read_proc(); if (buf[0] == val) return; fd = open(PROC_FILE, O_WRONLY); if (fd < 0) die("writing %s", PROC_FILE); buf[0] = val; n = write(fd, buf, 1); if (n < 0) die("writing into %s", PROC_FILE); close(fd); } static void start_trace(void) { start_stop_trace('1'); } static void stop_trace(void) { start_stop_trace('0'); } static void reset_trace(void) { char *path; char buf[1]; int fd; int n; path = tracecmd_get_tracing_file("stack_max_size"); fd = open(path, O_WRONLY); if (fd < 0) die("writing %s", path); buf[0] = '0'; n = write(fd, buf, 1); if (n < 0) die("writing into %s", path); tracecmd_put_tracing_file(path); close(fd); } static void read_trace(void) { FILE *fp; char *path; char *buf = NULL; size_t n; int r; if (read_proc() == '1') printf("(stack tracer running)\n"); else printf("(stack tracer not running)\n"); path = tracecmd_get_tracing_file("stack_trace"); fp = fopen(path, "r"); if (!fp) die("reading to '%s'", path); tracecmd_put_tracing_file(path); while ((r = getline(&buf, &n, fp)) >= 0) { /* * Skip any line that starts with a '#'. * Those talk about how to enable stack tracing * within the debugfs system. We don't care about that. */ if (buf[0] != '#') printf("%s", buf); free(buf); buf = NULL; } fclose(fp); } enum { OPT_reset = 253, OPT_stop = 254, OPT_start = 255, }; void trace_stack (int argc, char **argv) { enum stack_type trace_type = STACK_REPORT; int c; if (argc < 2) usage(argv); if (strcmp(argv[1], "stack") != 0) usage(argv); for (;;) { int option_index = 0; static struct option long_options[] = { {"start", no_argument, NULL, OPT_start}, {"stop", no_argument, NULL, OPT_stop}, {"reset", no_argument, NULL, OPT_reset}, {"help", no_argument, NULL, '?'}, {NULL, 0, NULL, 0} }; c = getopt_long (argc-1, argv+1, "+h?", long_options, &option_index); if (c == -1) break; switch (c) { case 'h': usage(argv); break; case OPT_start: trace_type = STACK_START; break; case OPT_stop: trace_type = STACK_STOP; break; case OPT_reset: trace_type = STACK_RESET; break; default: usage(argv); } } test_available(); switch (trace_type) { case STACK_START: start_trace(); break; case STACK_STOP: stop_trace(); break; case STACK_RESET: reset_trace(); break; default: read_trace(); break; } return; } trace-cmd-2.5.3/trace-stat.c000066400000000000000000000411051246701203100155700ustar00rootroot00000000000000/* * Copyright (C) 2014 Red Hat Inc, Steven Rostedt * * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; version 2 of the License (not later!) * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; if not, see * * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ */ #include #include #include #include #include #include #include #include #include #include "trace-local.h" #ifndef BUFSIZ #define BUFSIZ 1024 #endif static inline int is_top_instance(struct buffer_instance *instance) { return instance == &top_instance; } static int get_instance_file_fd(struct buffer_instance *instance, const char *file) { char *path; int fd; path = get_instance_file(instance, file); fd = open(path, O_RDONLY); tracecmd_put_tracing_file(path); return fd; } char *strstrip(char *str) { char *s; if (!str) return NULL; s = str + strlen(str) - 1; while (s >= str && isspace(*s)) s--; s++; *s = '\0'; for (s = str; *s && isspace(*s); s++) ; return s; } char *append_file(const char *dir, const char *name) { char *file; file = malloc_or_die(strlen(dir) + strlen(name) + 2); if (!file) die("malloc"); sprintf(file, "%s/%s", dir, name); return file; } static char *get_fd_content(int fd, const char *file) { char *str = NULL; int cnt = 0; int ret; for (;;) { str = realloc(str, BUFSIZ * ++cnt); if (!str) die("malloc"); ret = read(fd, str + BUFSIZ * (cnt - 1), BUFSIZ); if (ret < 0) die("reading %s\n", file); if (ret < BUFSIZ) break; } str[BUFSIZ * (cnt-1) + ret] = 0; return str; } char *get_file_content(const char *file) { char *str; int fd; fd = open(file, O_RDONLY); if (fd < 0) return NULL; str = get_fd_content(fd, file); close(fd); return str; } static char *get_instance_file_content(struct buffer_instance *instance, const char *file) { char *str = NULL; int fd; fd = get_instance_file_fd(instance, file); if (fd < 0) return NULL; str = get_fd_content(fd, file); close(fd); return str; } static void report_plugin(struct buffer_instance *instance) { char *str; char *cont; str = get_instance_file_content(instance, "current_tracer"); if (!str) return; cont = strstrip(str); /* We only care if the plugin is something other than nop */ if (strcmp(cont, "nop") == 0) goto out; printf("\nTracer: %s\n", cont); out: free(str); } struct event_iter *trace_event_iter_alloc(const char *path) { struct event_iter *iter; iter = malloc_or_die(sizeof(*iter)); memset(iter, 0, sizeof(*iter)); iter->system_dir = opendir(path); if (!iter->system_dir) die("opendir"); return iter; } enum event_iter_type trace_event_iter_next(struct event_iter *iter, const char *path, const char *system) { struct dirent *dent; if (system && !iter->event_dir) { char *event; struct stat st; event = append_file(path, system); stat(event, &st); if (!S_ISDIR(st.st_mode)) { free(event); goto do_system; } iter->event_dir = opendir(event); if (!iter->event_dir) die("opendir %s", event); free(event); } if (iter->event_dir) { while ((dent = readdir(iter->event_dir))) { const char *name = dent->d_name; if (strcmp(name, ".") == 0 || strcmp(name, "..") == 0) continue; iter->event_dent = dent; return EVENT_ITER_EVENT; } closedir(iter->event_dir); iter->event_dir = NULL; } do_system: while ((dent = readdir(iter->system_dir))) { const char *name = dent->d_name; if (strcmp(name, ".") == 0 || strcmp(name, "..") == 0) continue; iter->system_dent = dent; return EVENT_ITER_SYSTEM; } return EVENT_ITER_NONE; } void trace_event_iter_free(struct event_iter *iter) { if (!iter) return; if (iter->event_dir) closedir(iter->event_dir); closedir(iter->system_dir); free(iter); } static void reset_event_iter(struct event_iter *iter) { if (iter->event_dir) { closedir(iter->event_dir); iter->event_dir = NULL; } rewinddir(iter->system_dir); } static int process_individual_events(const char *path, struct event_iter *iter) { struct stat st; const char *system = iter->system_dent->d_name; char *file; char *enable = NULL; char *str; int ret = 0; file = append_file(path, system); stat(file, &st); if (!S_ISDIR(st.st_mode)) goto out; enable = append_file(file, "enable"); str = get_file_content(enable); if (!str) goto out; if (*str != '1' && *str != '0') ret = 1; free(str); out: free(enable); free(file); return ret; } static void process_event_enable(char *path, const char *system, const char *name, enum event_process *processed) { struct stat st; char *enable = NULL; char *file; char *str; if (system) path = append_file(path, system); file = append_file(path, name); if (system) free(path); stat(file, &st); if (!S_ISDIR(st.st_mode)) goto out; enable = append_file(file, "enable"); str = get_file_content(enable); if (!str) goto out; if (*str == '1') { if (!system) { if (!*processed) printf(" Individual systems:\n"); printf( " %s\n", name); *processed = PROCESSED_SYSTEM; } else { if (!*processed) { printf(" Individual events:\n"); *processed = PROCESSED_SYSTEM; } if (*processed == PROCESSED_SYSTEM) { printf(" %s\n", system); *processed = PROCESSED_EVENT; } printf( " %s\n", name); } } free(str); out: free(enable); free(file); } static void report_events(struct buffer_instance *instance) { struct event_iter *iter; char *str; char *cont; char *path; char *system; enum event_iter_type type; enum event_process processed = PROCESSED_NONE; str = get_instance_file_content(instance, "events/enable"); if (!str) return; cont = strstrip(str); printf("\nEvents:\n"); switch(*cont) { case '1': printf(" All enabled\n"); free(str); return; case '0': printf(" All disabled\n"); free(str); return; } free(str); path = get_instance_file(instance, "events"); if (!path) die("malloc"); iter = trace_event_iter_alloc(path); while (trace_event_iter_next(iter, path, NULL)) { process_event_enable(path, NULL, iter->system_dent->d_name, &processed); } reset_event_iter(iter); processed = PROCESSED_NONE; system = NULL; while ((type = trace_event_iter_next(iter, path, system))) { if (type == EVENT_ITER_SYSTEM) { /* Only process systems that are not fully enabled */ if (!process_individual_events(path, iter)) continue; system = iter->system_dent->d_name; if (processed) processed = PROCESSED_SYSTEM; continue; } process_event_enable(path, iter->system_dent->d_name, iter->event_dent->d_name, &processed); } trace_event_iter_free(iter); if (!processed) printf(" (none enabled)\n"); tracecmd_put_tracing_file(path); } static void process_event_filter(char *path, struct event_iter *iter, enum event_process *processed) { const char *system = iter->system_dent->d_name; const char *event = iter->event_dent->d_name; struct stat st; char *filter = NULL; char *file; char *str; char *cont; path = append_file(path, system); file = append_file(path, event); free(path); stat(file, &st); if (!S_ISDIR(st.st_mode)) goto out; filter = append_file(file, "filter"); str = get_file_content(filter); if (!str) goto out; cont = strstrip(str); if (strcmp(cont, "none") == 0) { free(str); goto out; } if (!*processed) printf("\nFilters:\n"); printf( " %s:%s \"%s\"\n", system, event, cont); *processed = PROCESSED_SYSTEM; free(str); out: free(filter); free(file); } static void report_event_filters(struct buffer_instance *instance) { struct event_iter *iter; char *path; char *system; enum event_iter_type type; enum event_process processed = PROCESSED_NONE; path = get_instance_file(instance, "events"); if (!path) die("malloc"); iter = trace_event_iter_alloc(path); processed = PROCESSED_NONE; system = NULL; while ((type = trace_event_iter_next(iter, path, system))) { if (type == EVENT_ITER_SYSTEM) { system = iter->system_dent->d_name; continue; } process_event_filter(path, iter, &processed); } trace_event_iter_free(iter); tracecmd_put_tracing_file(path); } static void process_event_trigger(char *path, struct event_iter *iter, enum event_process *processed) { const char *system = iter->system_dent->d_name; const char *event = iter->event_dent->d_name; struct stat st; char *trigger = NULL; char *file; char *str; char *cont; path = append_file(path, system); file = append_file(path, event); free(path); stat(file, &st); if (!S_ISDIR(st.st_mode)) goto out; trigger = append_file(file, "trigger"); str = get_file_content(trigger); if (!str) goto out; cont = strstrip(str); if (cont[0] == '#') { free(str); goto out; } if (!*processed) printf("\nTriggers:\n"); printf( " %s:%s \"%s\"\n", system, event, cont); *processed = PROCESSED_SYSTEM; free(str); out: free(trigger); free(file); } static void report_event_triggers(struct buffer_instance *instance) { struct event_iter *iter; char *path; char *system; enum event_iter_type type; enum event_process processed = PROCESSED_NONE; path = get_instance_file(instance, "events"); if (!path) die("malloc"); iter = trace_event_iter_alloc(path); processed = PROCESSED_NONE; system = NULL; while ((type = trace_event_iter_next(iter, path, system))) { if (type == EVENT_ITER_SYSTEM) { system = iter->system_dent->d_name; continue; } process_event_trigger(path, iter, &processed); } trace_event_iter_free(iter); tracecmd_put_tracing_file(path); } enum func_states { FUNC_STATE_START, FUNC_STATE_SKIP, FUNC_STATE_PRINT, }; static void list_functions(const char *path, char *string) { enum func_states state; struct stat st; char *str; int ret = 0; int len; int i; int first = 0; /* Ignore if it does not exist. */ ret = stat(path, &st); if (ret < 0) return; str = get_file_content(path); if (!str) return; len = strlen(str); state = FUNC_STATE_START; /* Skip all lines that start with '#' */ for (i = 0; i < len; i++) { if (state == FUNC_STATE_PRINT) putchar(str[i]); if (str[i] == '\n') { state = FUNC_STATE_START; continue; } if (state == FUNC_STATE_SKIP) continue; if (state == FUNC_STATE_START && str[i] == '#') { state = FUNC_STATE_SKIP; continue; } if (!first) { printf("\n%s:\n", string); first = 1; } if (state != FUNC_STATE_PRINT) { state = FUNC_STATE_PRINT; printf(" "); putchar(str[i]); } } free(str); } static void report_graph_funcs(struct buffer_instance *instance) { char *path; path = get_instance_file(instance, "set_graph_function"); if (!path) die("malloc"); list_functions(path, "Function Graph Filter"); tracecmd_put_tracing_file(path); path = get_instance_file(instance, "set_graph_notrace"); if (!path) die("malloc"); list_functions(path, "Function Graph No Trace"); tracecmd_put_tracing_file(path); } static void report_ftrace_filters(struct buffer_instance *instance) { char *path; path = get_instance_file(instance, "set_ftrace_filter"); if (!path) die("malloc"); list_functions(path, "Function Filter"); tracecmd_put_tracing_file(path); path = get_instance_file(instance, "set_ftrace_notrace"); if (!path) die("malloc"); list_functions(path, "Function No Trace"); tracecmd_put_tracing_file(path); } static void report_buffers(struct buffer_instance *instance) { #define FILE_SIZE 100 char *str; char *cont; char file[FILE_SIZE]; int cpu; str = get_instance_file_content(instance, "buffer_size_kb"); if (!str) return; cont = strstrip(str); /* If it's not expanded yet, just skip */ if (strstr(cont, "expanded") != NULL) goto out; if (strcmp(cont, "X") != 0) { printf("\nBuffer size in kilobytes (per cpu):\n"); printf(" %s\n", str); goto total; } /* Read the sizes of each CPU buffer */ for (cpu = 0; ; cpu++) { snprintf(file, FILE_SIZE, "per_cpu/cpu%d/buffer_size_kb", cpu); str = get_instance_file_content(instance, file); if (!str) break; cont = strstrip(str); if (!cpu) putchar('\n'); printf("CPU %d buffer size (kb): %s\n", cpu, cont); free(str); } total: free(str); str = get_instance_file_content(instance, "buffer_total_size_kb"); if (!str) return; cont = strstrip(str); printf("\nBuffer total size in kilobytes:\n"); printf(" %s\n", str); out: free(str); } static void report_clock(struct buffer_instance *instance) { char *str; char *cont; char *clock; str = get_instance_file_content(instance, "trace_clock"); if (!str) return; clock = strstr(str, "["); if (!clock) goto out; clock++; cont = strstr(clock, "]"); if (!cont) /* should never happen */ goto out; *cont = '\0'; /* Default clock is "local", only show others */ if (strcmp(clock, "local") == 0) goto out; printf("\nClock: %s\n", clock); out: free(str); } static void report_cpumask(struct buffer_instance *instance) { char *str; char *cont; int cpus; int n; int i; str = get_instance_file_content(instance, "tracing_cpumask"); if (!str) return; cont = strstrip(str); /* check to make sure all CPUs on this machine are set */ cpus = count_cpus(); for (i = strlen(cont) - 1; i >= 0 && cpus > 0; i--) { if (cont[i] == ',') continue; if (cont[i] == 'f') { cpus -= 4; continue; } if (cpus >= 4) break; if (cont[i] >= '0' && cont[i] <= '9') n = cont[i] - '0'; else n = 10 + (cont[i] - 'a'); while (cpus > 0) { if (!(n & 1)) break; n >>= 1; cpus--; } break; } /* If cpus is greater than zero, one isn't set */ if (cpus > 0) printf("\nCPU mask: %s\n", cont); free(str); } static void report_latency(struct buffer_instance *instance) { char *str; char *cont; str = get_instance_file_content(instance, "tracing_max_latency"); if (!str) return; cont = strstrip(str); if (strcmp(cont, "0") != 0) printf("\nMax Latency: %s\n", cont); free(str); } static void report_probes(struct buffer_instance *instance, const char *file, const char *string) { char *str; char *cont; int newline; int i; str = get_instance_file_content(instance, file); if (!str) return; cont = strstrip(str); if (strlen(cont) == 0) goto out; printf("\n%s:\n", string); newline = 1; for (i = 0; cont[i]; i++) { if (newline) printf(" "); putchar(cont[i]); if (cont[i] == '\n') newline = 1; else newline = 0; } putchar('\n'); out: free(str); } static void report_kprobes(struct buffer_instance *instance) { report_probes(instance, "kprobe_events", "Kprobe events"); } static void report_uprobes(struct buffer_instance *instance) { report_probes(instance, "uprobe_events", "Uprobe events"); } static void report_traceon(struct buffer_instance *instance) { char *str; char *cont; str = get_instance_file_content(instance, "tracing_on"); if (!str) return; cont = strstrip(str); /* double newline as this is the last thing printed */ if (strcmp(cont, "0") == 0) printf("\nTracing is disabled\n\n"); else printf("\nTracing is enabled\n\n"); free(str); } static void stat_instance(struct buffer_instance *instance) { report_plugin(instance); report_events(instance); report_event_filters(instance); report_event_triggers(instance); report_ftrace_filters(instance); report_graph_funcs(instance); report_buffers(instance); report_clock(instance); report_cpumask(instance); report_latency(instance); report_kprobes(instance); report_uprobes(instance); report_traceon(instance); } void trace_stat (int argc, char **argv) { struct buffer_instance *instance = &top_instance; int topt = 0; int c; for (;;) { c = getopt(argc-1, argv+1, "tB:"); if (c == -1) break; switch (c) { case 'h': usage(argv); break; case 'B': instance = create_instance(optarg); add_instance(instance); /* top instance requires direct access */ if (!topt && is_top_instance(first_instance)) first_instance = instance; break; case 't': /* Force to use top instance */ topt = 1; instance = &top_instance; first_instance = instance; break; default: usage(argv); } } for_all_instances(instance) { stat_instance(instance); } exit(0); } trace-cmd-2.5.3/trace-stream.c000066400000000000000000000067321246701203100161170ustar00rootroot00000000000000/* * Copyright (C) 2014 Red Hat Inc, Steven Rostedt * * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; version 2 of the License (not later!) * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; if not, see * * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ */ #include #include #include #include #include #include #include "trace-local.h" /* * Stream runs for a single machine. We are going to cheat * and use the trace-output and trace-input code to create * our pevent. First just create a trace.dat file and then read * it to create the pevent and handle. */ struct tracecmd_input * trace_stream_init(struct buffer_instance *instance, int cpu, int fd, int cpus, int profile, struct hook_list *hooks) { struct tracecmd_input *trace_input; struct tracecmd_output *trace_output; static FILE *fp = NULL; static int tfd; static int ofd; long flags; if (instance->handle) { trace_input = instance->handle; goto make_pipe; } if (!fp) { fp = tmpfile(); if (!fp) return NULL; tfd = fileno(fp); ofd = dup(tfd); trace_output = tracecmd_create_init_fd(ofd); if (!trace_output) { fclose(fp); return NULL; } tracecmd_output_free(trace_output); } lseek(ofd, 0, SEEK_SET); trace_input = tracecmd_alloc_fd(ofd); if (!trace_input) { close(ofd); goto fail; } if (tracecmd_read_headers(trace_input) < 0) goto fail_free_input; if (profile) trace_init_profile(trace_input, hooks); make_pipe: /* Do not block on this pipe */ flags = fcntl(fd, F_GETFL); fcntl(fd, F_SETFL, flags | O_NONBLOCK); if (tracecmd_make_pipe(trace_input, cpu, fd, cpus) < 0) goto fail_free_input; instance->handle = trace_input; return trace_input; fail_free_input: tracecmd_close(trace_input); fail: fclose(fp); return NULL; } int trace_stream_read(struct pid_record_data *pids, int nr_pids, struct timeval *tv, int profile) { struct pevent_record *record; struct pid_record_data *pid; struct pid_record_data *last_pid; fd_set rfds; int top_rfd = 0; int ret; int i; last_pid = NULL; again: for (i = 0; i < nr_pids; i++) { pid = &pids[i]; if (!pid->record) pid->record = tracecmd_read_data(pid->instance->handle, pid->cpu); record = pid->record; if (!record && errno == EINVAL) /* pipe has closed */ pid->closed = 1; if (record && (!last_pid || record->ts < last_pid->record->ts)) last_pid = pid; } if (last_pid) { trace_show_data(last_pid->instance->handle, last_pid->record, profile); free_record(last_pid->record); last_pid->record = NULL; return 1; } FD_ZERO(&rfds); for (i = 0; i < nr_pids; i++) { /* Do not process closed pipes */ if (pids[i].closed) continue; if (pids[i].brass[0] > top_rfd) top_rfd = pids[i].brass[0]; FD_SET(pids[i].brass[0], &rfds); } ret = select(top_rfd + 1, &rfds, NULL, NULL, tv); if (ret > 0) goto again; return ret; } trace-cmd-2.5.3/trace-usage.c000066400000000000000000000264721246701203100157330ustar00rootroot00000000000000#include #include #include #include #include "trace-local.h" #include "version.h" struct usage_help { char *name; char *short_help; char *long_help; }; static struct usage_help usage_help[] = { { "record", "record a trace into a trace.dat file", " %s record [-v][-e event [-f filter]][-p plugin][-F][-d][-D][-o file] \\\n" " [-s usecs][-O option ][-l func][-g func][-n func] \\\n" " [-P pid][-N host:port][-t][-r prio][-b size][-B buf][command ...]\n" " [-m max][-C clock]\n" " -e run command with event enabled\n" " -f filter for previous -e event\n" " -R trigger for previous -e event\n" " -p run command with plugin enabled\n" " -F filter only on the given process\n" " -P trace the given pid like -F for the command\n" " -c also trace the childen of -F\n" " -C set the trace clock\n" " -T do a stacktrace on all events\n" " -l filter function name\n" " -g set graph function\n" " -n do not trace function\n" " -m max size per CPU in kilobytes\n" " -M set CPU mask to trace\n" " -v will negate all -e after it (disable those events)\n" " -d disable function tracer when running\n" " -D Full disable of function tracing (for all users)\n" " -o data output file [default trace.dat]\n" " -O option to enable (or disable)\n" " -r real time priority to run the capture threads\n" " -s sleep interval between recording (in usecs) [default: 1000]\n" " -S used with --profile, to enable only events in command line\n" " -N host:port to connect to (see listen)\n" " -t used with -N, forces use of tcp in live trace\n" " -b change kernel buffersize (in kilobytes per CPU)\n" " -B create sub buffer and folling events will be enabled here\n" " -k do not reset the buffers after tracing.\n" " -i do not fail if an event is not found\n" " --profile enable tracing options needed for report --profile\n" " --func-stack perform a stack trace for function tracer\n" " (use with caution)\n" }, { "start", "start tracing without recording into a file", " %s start [-e event][-p plugin][-d][-O option ][-P pid]\n" " Uses same options as record, but does not run a command.\n" " It only enables the tracing and exits\n" }, { "extract", "extract a trace from the kernel", " %s extract [-p plugin][-O option][-o file][-s]\n" " Uses same options as record, but only reads an existing trace.\n" " -s : extract the snapshot instead of the main buffer\n" }, { "stop", "stop the kernel from recording trace data", " %s stop [-B buf [-B buf]..] [-t]\n" " Stops the tracer from recording more data.\n" " Used in conjunction with start\n" " -B stop a given buffer (more than one may be specified)\n " " -t stop the top level buffer (needed if -B is specified)\n" }, { "restart", "restart the kernel trace data recording", " %s restart [-B buf [-B buf]..] [-t]\n" " Restarts recording after a trace-cmd stop.\n" " Used in conjunction with stop\n" " -B restart a given buffer (more than one may be specified)\n " " -t restart the top level buffer (needed if -B is specified)\n" }, { "show", "show the contents of the kernel tracing buffer", " %s show [-p|-s][-c cpu][-B buf][options]\n" " Basically, this is a cat of the trace file.\n" " -p read the trace_pipe file instead\n" " -s read the snapshot file instance\n" " (Can't have both -p and -s)\n" " -c just show the file associated with a given CPU\n" " -B read from a tracing buffer instance.\n" " -f display the file path that is being dumped\n" " The following options shows the corresponding file name\n" " and then exits.\n" " --tracing_on\n" " --current_tracer\n" " --buffer_size (for buffer_size_kb)\n" " --buffer_total_size (for buffer_total_size_kb)\n" " --ftrace_filter (for set_ftrace_filter)\n" " --ftrace_notrace (for set_ftrace_notrace)\n" " --ftrace_pid (for set_ftrace_pid)\n" " --graph_function (for set_graph_function)\n" " --graph_notrace (for set_graph_notrace)\n" " --cpumask (for tracing_cpumask)\n" }, { "reset", "disable all kernel tracing and clear the trace buffers", " %s reset [-b size][-B buf][-d][-t]\n" " Disables the tracer (may reset trace file)\n" " Used in conjunction with start\n" " -b change the kernel buffer size (in kilobytes per CPU)\n" " -B reset the given buffer instance (top instance ignored)\n" " -d delete the previous specified instance\n" " -t still reset the top instance if -B option is given\n" }, { "report", "read out the trace stored in a trace.dat file", " %s report [-i file] [--cpu cpu] [-e][-f][-l][-P][-L][-N][-R][-E]\\\n" " [-r events][-n events][-F filter][-v][-V][-T][-O option]\n" " [-H [start_system:]start_event,start_match[,pid]/[end_system:]end_event,end_match[,flags]\n" " -i input file [default trace.dat]\n" " -e show file endianess\n" " -f show function list\n" " -P show printk list\n" " -E show event files stored\n" " -F filter to filter output on\n" " -t print out full timestamp. Do not truncate to 6 places.\n" " -R raw format: ignore print format and only show field data\n" " -r raw format the events that match the option\n" " -v will negate all -F after it (Not show matches)\n" " -T print out the filter strings created and exit\n" " -V verbose (shows plugins being loaded)\n" " -L load only local (~/.trace-cmd/plugins) plugins\n" " -N do not load any plugins\n" " -n ignore plugin handlers for events that match the option\n" " -w show wakeup latencies\n" " -l show latency format (default with latency tracers)\n" " -O plugin option -O [plugin:]var[=val]\n" " --check-events return whether all event formats can be parsed\n" " --stat - show the buffer stats that were reported at the end of the record.\n" " --uname - show uname of the record, if it was saved\n" " --profile report stats on where tasks are blocked and such\n" " -H Allows users to hook two events together for timings\n" " (used with --profile)\n" }, { "stream", "Start tracing and read the output directly", " %s stream [-e event][-p plugin][-d][-O option ][-P pid]\n" " Uses same options as record but does not write to files or the network.\n" }, { "profile", "Start profiling and read the output directly", " %s profile [-e event][-p plugin][-d][-O option ][-P pid][-S][-o output]\n" " [-H [start_system:]start_event,start_match[,pid]/[end_system:]end_event,end_match[,flags]\n\n" " Uses same options as record --profile.\n" " -H Allows users to hook two events together for timings\n" }, { "hist", "show a historgram of the trace.dat information", " %s hist [-i file][-P] [file]" " -P ignore pids (compact all functions)\n" }, { "stat", "show the status of the running tracing (ftrace) system", " %s stat" }, { "split", "parse a trace.dat file into smaller file(s)", " %s split [options] -o file [start [end]]\n" " -o output file to write to (file.1, file.2, etc)\n" " -s n split file up by n seconds\n" " -m n split file up by n milliseconds\n" " -u n split file up by n microseconds\n" " -e n split file up by n events\n" " -p n split file up by n pages\n" " -r repeat from start to end\n" " -c per cpu, that is -p 2 will be 2 pages for each CPU\n" " if option is specified, it will split the file\n" " up starting at start, and ending at end\n" " start - decimal start time in seconds (ex: 75678.923853)\n" " if left out, will start at beginning of file\n" " end - decimal end time in seconds\n" }, { "options", "list the plugin options available for trace-cmd report", " %s options\n" }, { "listen", "listen on a network socket for trace clients", " %s listen -p port[-D][-o file][-d dir][-l logfile]\n" " Creates a socket to listen for clients.\n" " -D create it in daemon mode.\n" " -o file name to use for clients.\n" " -d diretory to store client files.\n" " -l logfile to write messages to.\n" }, { "list", "list the available events, plugins or options", " %s list [-e [regex]][-t][-o][-f [regex]]\n" " -e list available events\n" " -F show event format\n" " -R show event triggers\n" " -l show event filters\n" " -t list available tracers\n" " -o list available options\n" " -f [regex] list available functions to filter on\n" " -P list loaded plugin files (by path)\n" " -O list plugin options\n" " -B list defined buffer instances\n" " -C list the defined clocks (and active one)\n" }, { "restore", "restore a crashed record", " %s restore [-c][-o file][-i file] cpu-file [cpu-file ...]\n" " -c create a partial trace.dat file only\n" " -o output file\n" " -i parital trace.dat file for input\n" }, { "snapshot", "take snapshot of running trace", " %s snapshot [-s][-r][-f][-B buf][-c cpu]\n" " -s take a snapshot of the trace buffer\n" " -r reset current snapshot\n" " -f free the snapshot buffer\n" " without the above three options, display snapshot\n" " -c operate on the snapshot buffer for the given CPU\n" " -B operate on the snapshot buffer for a tracing buffer instance.\n" }, { "stack", "output, enable or disable kernel stack tracing", " %s stack [--start][--stop][--reset]\n" " --start enable the stack tracer\n" " --stop disable the stack tracer\n" " --reset reset the maximum stack found\n" }, { "check-events", "parse trace event formats", " %s check-format [-N]\n" " -N do not load any plugins\n" }, { NULL, NULL, NULL } }; static struct usage_help *find_help(char *cmd) { struct usage_help *help; help = usage_help; while (help->name) { if (strcmp(cmd, help->name) == 0) return help; help++; } return NULL; } void usage(char **argv) { struct usage_help *help = NULL; char *arg = argv[0]; char *p; p = basename(arg); printf("\n" "%s version %s\n\n" "usage:\n", p, VERSION_STRING); if (argv[1]) help = find_help(argv[1]); if (help) { printf(help->long_help, p); goto out; } printf(" %s [COMMAND] ...\n\n" " commands:\n", p); help = usage_help; while (help->name) { printf(" %s - %s\n", help->name, help->short_help); help++; } out: printf("\n"); exit(-1); } trace-cmd-2.5.3/trace-util.c000066400000000000000000001005261246701203100155750ustar00rootroot00000000000000/* * Copyright (C) 2009, 2010 Red Hat Inc, Steven Rostedt * * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ * This program is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; * version 2.1 of the License (not later!) * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this program; if not, see * * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ */ #include #include #include #include #include #include #include #include #include #include #include #include #include #include "trace-cmd.h" #define LOCAL_PLUGIN_DIR ".trace-cmd/plugins" #define TRACEFS_PATH "/sys/kernel/tracing" #define DEBUGFS_PATH "/sys/kernel/debug" int tracecmd_disable_sys_plugins; int tracecmd_disable_plugins; static struct registered_plugin_options { struct registered_plugin_options *next; struct plugin_option *options; } *registered_options; static struct trace_plugin_options { struct trace_plugin_options *next; char *plugin; char *option; char *value; } *trace_plugin_options; #define _STR(x) #x #define STR(x) _STR(x) #ifndef MAX_PATH # define MAX_PATH 1024 #endif struct plugin_list { struct plugin_list *next; char *name; void *handle; }; /** * trace_util_list_plugin_options - get list of plugin options * * Returns an array of char strings that list the currently registered * plugin options in the format of :