- 31 Oct, 2012 1 commit
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Namhyung Kim authored
When perf detects no libelf during the build, it'll use internal mini elf parser instead of libelf. But as it only supports minimal functionalities, it also disables support to 'probe' builtin command. Currently it didn't warned to user. Fix it. $ sudo apt-get remove libelf-dev $ make CHK -fstack-protector-all CHK -Wstack-protector CHK -Wvolatile-register-var CHK bionic CHK libelf CHK glibc Makefile:491: No libelf found, disables 'probe' tool, please install elfutils-libelf-devel/libelf-dev CHK libunwind CHK libaudit $ make NO_LIBELF=1 CHK -fstack-protector-all CHK -Wstack-protector CHK -Wvolatile-register-var CHK bionic CHK libaudit Reported-by:Peter Zijlstra <a.p.zijlstra@chello.nl> Signed-off-by:
Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lkml.kernel.org/n/tip-8ww8zc4hhpxabfskxs3u5ede@git.kernel.org [ committer note: The package needed is elfutils-libelf-devel, not elfutils-devel ] Signed-off-by:
Arnaldo Carvalho de Melo <acme@redhat.com>
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- 30 Oct, 2012 2 commits
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Peter Huewe authored
FYI, there are new sparse warnings: arch/x86/kernel/cpu/perf_event.c:1356:18: sparse: symbol 'events_attr' was not declared. Should it be static? This patch makes it static and also adds the static keyword to fix arch/x86/kernel/cpu/perf_event.c:1344:9: warning: symbol 'events_sysfs_show' was not declared. Signed-off-by:
Peter Huewe <peterhuewe@gmx.de> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Yuanhan Liu <yuanhan.liu@linux.intel.com> Cc: fengguang.wu@intel.com Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lkml.kernel.org/n/tip-lerdpXlnruh0yvWs2owwuizl@git.kernel.orgSigned-off-by:
Ingo Molnar <mingo@kernel.org>
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Ingo Molnar authored
Merge tag 'perf-core-for-mingo' of git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux into perf/core Pull perf/core improvements, fixes and code move from Arnaldo Carvalho de Melo: * Initialize 'page_size' variable in the python binding, this was sent for perf/urgent by mistake, then when merging Ingo removed it, fixing the problem for perf/urgent, but when perf/urgent was merged with perf/core, where that initialization is needed, made the python binding mmap call to fail, fix it by initializing page_size again. * Add a browser for 'perf script' and make it available from the report and annotate browsers. It does filtering to find the scripts that handle events found in the perf.data file used. From Feng Tang * Move some functions from symbol.c to more appropriate files, creating dso.[ch] in the process, no code changes. From Jiri Olsa * Fix mmap error output message for when perf_mmap fails and returns !-EPERM, where the default for mmap_pages, INT_MAX, was causing a !power of 2 error message, fix from Jiri Olsa. Signed-off-by:
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- 29 Oct, 2012 13 commits
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Arnaldo Carvalho de Melo authored
The commit 0c1fe6b: 'perf tools: Have the page size value available for all tools' Broke the python binding because the global variable 'page_size' is initialized on the main() routine, that is not called when using just the python binding, causing evlist.mmap() to fail because it expects that variable to be initialized to the system's page size. Fix it by initializing it on the binding init routine. Reported-by:
David Ahern <dsahern@gmail.com> Cc: David Ahern <dsahern@gmail.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Mike Galbraith <efault@gmx.de> Cc: Namhyung Kim <namhyung@gmail.com> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Stephane Eranian <eranian@google.com> Link: http://lkml.kernel.org/n/tip-vrvp3azmbfzexnpmkhmvtzzc@git.kernel.orgSigned-off-by:
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Jiri Olsa authored
The mmap_pages default value is not power of 2 (UINT_MAX). Together with perf_evlist__mmap function returning error value different from EPERM, we get misleading error message: "--mmap_pages/-m value must be a power of two." Fixing this by adding extra check for UINT_MAX value for this error condition. Signed-off-by:
Jiri Olsa <jolsa@redhat.com> Cc: Corey Ashford <cjashfor@linux.vnet.ibm.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Ingo Molnar <mingo@elte.hu> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Link: http://lkml.kernel.org/r/1350743599-4805-12-git-send-email-jolsa@redhat.comSigned-off-by:
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Feng Tang authored
With this function, other modules can basically check whether a file is a legal perf data file by checking its first 8 bytes against all possible perf magic numbers. Change the function name from check_perf_magic to more meaningful is_perf_magic as suggested by acme. Signed-off-by:
Feng Tang <feng.tang@intel.com> Cc: Andi Kleen <andi@firstfloor.org> Cc: Ingo Molnar <mingo@elte.hu> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lkml.kernel.org/r/1351569369-26732-7-git-send-email-feng.tang@intel.comSigned-off-by:
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Feng Tang authored
Integrate the script browser into "perf report" framework, users can use function key 'r' or the drop down menu to list all perf scripts and select one of them, just like they did for the annotation. Signed-off-by:
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Feng Tang authored
Integrate the script browser into annotation, users can press function key 'r' to list all perf scripts and select one of them to run that script, the output will be shown in a separate browser. Signed-off-by:
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Feng Tang authored
Create a script browser, so that user can check all the available scripts for current perf data file and run them inside the main perf report or annotation browsers, for all perf samples or for samples belong to one thread/symbol. Please be noted: current script browser is only for report use, and doesn't cover the record phase, IOW it must run against one existing perf data file. The work flow is, users can use function key to list all the available scripts for current perf data file in system and chose one, which will be executed with popen("perf script -s xxx.xx",) and all the output lines are put into one ui browser, pressing 'q' or left arrow key will make it return to previous browser. Signed-off-by: -
Feng Tang authored
As suggested by Arnaldo, many scripts have their own usages and need capture specific events or tracepoints, so only those scripts whose target events match the events in current perf data file should be listed in the script browser menu. This patch will add the event match checking, by opening "xxx-record" script to cherry pick out all events name and comparing them with those inside the perf data file. Signed-off-by:
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Feng Tang authored
Currently many perf commands annotate/evlist/report/script/lock etc all support "-i" option to chose a specific perf data, and all of them create a local "input_name" to save the file name for that perf data. Since most of these commands need it, we can add a global variable for it, also it can some other benefits: 1. When calling script browser inside hists/annotation browser, it needs to know the perf data file name to run that script. 2. For further feature like runtime switching to another perf data file, this variable can also help. Signed-off-by:
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Jiri Olsa authored
Moving dso_* related functions into dso object. Keeping symbol loading related functions still in the symbol object as it seems more convenient. Signed-off-by:
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Jiri Olsa authored
Moving strxfrchar function into string object. Signed-off-by:
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Jiri Olsa authored
Moving hex2u64 function into util object. Signed-off-by:
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Jiri Olsa authored
Moving BUILD_ID_SIZE define into build-id object, plus include related changes. Signed-off-by:
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Jiri Olsa authored
Moving build_id__sprintf function into build-id object. Signed-off-by:
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- 28 Oct, 2012 1 commit
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Andi Kleen authored
The callers of parse_events usually have their own error handling. Move the fprintf for a bad event to parse_events_options, which is the only one who should need it. Signed-off-by:
Andi Kleen <ak@linux.intel.com> Acked-by:
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- 26 Oct, 2012 11 commits
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Ingo Molnar authored
Merge tag 'perf-core-for-mingo' of git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux into perf/core Pull perf/core improvements from Arnaldo Carvalho de Melo: * perf inject changes to allow showing where a task sleeps, from Andrew Vagin. * Makefile improvements from Namhyung Kim. * Add --pre and --post command hooks in 'stat', from Peter Zijlstra. Signed-off-by:
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Peter Zijlstra authored
In order to measure kernel builds, one has to do some pre/post cleanup work in order to do the repeat build. So provide --pre and --post command hooks to allow doing just that. perf stat --repeat 10 --null --sync --pre 'make -s O=defconfig-build/clean' \ -- make -s -j64 O=defconfig-build/ bzImage Signed-off-by:
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Andrew Vagin authored
Otherwise they will be not written in an output file. Signed-off-by:
Andrew Vagin <avagin@openvz.org> Cc: Ingo Molnar <mingo@redhat.com> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Link: http://lkml.kernel.org/r/1344344165-369636-5-git-send-email-avagin@openvz.org [ committer note: Fixed up wrt changes made in the immediate previous patches ] Signed-off-by:
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Andrew Vagin authored
You may want to know where and how long a task is sleeping. A callchain may be found in sched_switch and a time slice in stat_iowait, so I add handler in perf inject for merging this events. My code saves sched_switch event for each process and when it meets stat_iowait, it reports the sched_switch event, because this event contains a correct callchain. By another words it replaces all stat_iowait events on proper sched_switch events. I use the next sequence of commands for testing: perf record -e sched:sched_stat_sleep -e sched:sched_switch \ -e sched:sched_process_exit -g -o ~/perf.data.raw \ ~/test-program perf inject -v -s -i ~/perf.data.raw -o ~/perf.data perf report --stdio -i ~/perf.data 100.00% foo [kernel.kallsyms] [k] __schedule | --- __schedule schedule | |--79.75%-- schedule_hrtimeout_range_clock | schedule_hrtimeout_range | poll_schedule_timeout | do_select | core_sys_select | sys_select | system_call_fastpath | __select | __libc_start_main | --20.25%-- do_nanosleep hrtimer_nanosleep sys_nanosleep system_call_fastpath __GI___libc_nanosleep __libc_start_main And here is test-program.c: #include<unistd.h> #include<time.h> #include<sys/select.h> int main() { struct timespec ts1; struct timeval tv1; int i; long s; for (i = 0; i < 10; i++) { ts1.tv_sec = 0; ts1.tv_nsec = 10000000; nanosleep(&ts1, NULL); tv1.tv_sec = 0; tv1.tv_usec = 40000; select(0, NULL, NULL, NULL,&tv1); } return 1; } Signed-off-by:Frederic Weisbecker <fweisbec@gmail.com> Cc: Ingo Molnar <mingo@redhat.com> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Link: http://lkml.kernel.org/r/1344344165-369636-4-git-send-email-avagin@openvz.org [ committer note: Made it use evsel->handler ] Signed-off-by:
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Andrew Vagin authored
Before this patch "perf inject" can only handle data from pipe. I want to use "perf inject" for reworking events. Look at my following patch. v2: add information about new options in tools/perf/Documentation/ Signed-off-by:
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Namhyung Kim authored
Currently checking mmap support in libelf failed due to wrong flags. CHK libelf CHK libdw CHK libunwind CHK -DLIBELF_MMAP /tmp/ccYJwdR0.o: In function `main': :(.text+0x18): undefined reference to `elf_begin' collect2: error: ld returned 1 exit status This cannot happen since we checked the elf_begin() when checking libelf and it succeeded. Fix it by using a same flag with libelf checking. Signed-off-by: -
Namhyung Kim authored
It might be useful to see what's happening behind us rather than just waiting few seconds during the config checking. Also align the CHK message with other ones. Signed-off-by:
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Namhyung Kim authored
This will show directory change info in a consistent form. Also it can be converted again into David Howell's descend command. Signed-off-by:
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Namhyung Kim authored
Documentation targets handling rules are duplicate. Consolidate them with DOC_TARGETS and INSTALL_DOC_TARGETS. Signed-off-by:
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Namhyung Kim authored
Ingo reported (again!) that 'make clean' on perf/traceevent does not work due to some reason with system header file. Quotes Ingo: "Note that the old dependency related build failure thought to be fixed in commit 860df583 is back: make[1]: *** No rule to make target `/usr/lib/gcc/x86_64-redhat-linux/4.7.0/include/stddef.h', needed by `.trace-seq.d'. Stop. 'make clean' itself does not work in libtraceevent: comet:~/tip/tools/lib/traceevent> make clean make: *** No rule to make target `/usr/lib/gcc/x86_64-redhat-linux/4.7.0/include/stddef.h', needed by `.trace-seq.d'. Stop. So I had to clean it out manually: comet:~/tip/tools/lib/traceevent> git ls-files --others | xargs rm comet:~/tip/tools/lib/traceevent> and then things build fine." Try to fix it by excluding system headers from dependency generation. Signed-off-by:
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Ingo Molnar authored
Merge tag 'perf-core-for-mingo' of git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux into perf/core Pull perf/core trace improvements from Arnaldo Carvalho de Melo: * Don't stop synthesizing threads when one vanishes, this is for the existing threads when we start a tool like trace. * Use sched:sched_stat_runtime to provide a thread summary, this produces the same output as the 'trace summary' subcommand of tglx's original "trace" tool. Signed-off-by:
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- 25 Oct, 2012 4 commits
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Arnaldo Carvalho de Melo authored
[root@sandy ~]# perf trace --sched --duration 0.100 --pid `pidof firefox` <SNIP> 17079.847 ( 0.009 ms): 17643 poll(ufds: 140037623086496, nfds: 11, timeout_msecs: 0) = 0 Timeout 17079.892 ( 0.010 ms): 17643 read(fd: 4, buf: 140038178943092, count: 4096 ) = -1 EAGAIN Resource temporarily unavailable 17079.921 ( 0.013 ms): 17643 poll(ufds: 140037623086496, nfds: 11, timeout_msecs: 0) = 0 Timeout 17079.949 ( 0.009 ms): 17643 read(fd: 4, buf: 140038178943092, count: 4096 ) = -1 EAGAIN Resource temporarily unavailable ^C _____________________________________________________________________ __) Summary of events (__ [ task - pid ] [ events ] [ ratio ] [ runtime ] _____________________________________________________________________ firefox - 17643 : 18013 [ 72.2% ] 359.110 ms firefox - 17663 : 41 [ 0.2% ] 21.439 ms firefox - 17664 : 6840 [ 27.4% ] 133.642 ms firefox - 17667 : 46 [ 0.2% ] 0.682 ms [root@sandy ~]# This is equivalent to the 'perf trace summary' subcomand in the tmp.perf/trace2 branch. Another example, setting a huge duration filter to get just a system wide summary: [root@sandy ~]# perf trace --duration 10000.0 --sched ^C _____________________________________________________________________ __) Summary of events (__ [ task - pid ] [ events ] [ ratio ] [ runtime ] _____________________________________________________________________ scsi_eh_1 - 258 : 15 [ 0.0% ] 0.133 ms kworker/0:1H - 322 : 13 [ 0.0% ] 0.032 ms jbd2/dm-0-8 - 384 : 4 [ 0.0% ] 0.115 ms flush-253:0 - 470 : 1 [ 0.0% ] 0.027 ms firefox - 950 : 4783 [ 0.1% ] 24.863 ms firefox - 992 : 1883 [ 0.1% ] 6.808 ms firefox - 995 : 35 [ 0.0% ] 0.111 ms ksoftirqd/6 - 4362 : 2 [ 0.0% ] 0.005 ms ksoftirqd/7 - 4365 : 1 [ 0.0% ] 0.007 ms Xorg - 4671 : 148 [ 0.0% ] 0.912 ms gnome-settings- - 4846 : 14 [ 0.0% ] 0.086 ms seahorse-daemon - 4847 : 14 [ 0.0% ] 0.092 ms gnome-panel - 4875 : 46 [ 0.0% ] 0.159 ms gnome-power-man - 4918 : 16 [ 0.0% ] 0.065 ms gvfs-afc-volume - 4992 : 77 [ 0.0% ] 0.136 ms gnome-screensav - 5114 : 24 [ 0.0% ] 0.128 ms xchat - 8082 : 466 [ 0.0% ] 2.019 ms synergyc - 8369 : 941 [ 0.0% ] 3.291 ms synergyc - 8371 : 85 [ 0.0% ] 1.817 ms jbd2/dm-4-8 - 9352 : 4 [ 0.0% ] 0.109 ms rpcbind - 9786 : 3 [ 0.0% ] 0.017 ms rtkit-daemon - 12802 : 10 [ 0.0% ] 0.038 ms rtkit-daemon - 12803 : 8 [ 0.0% ] 0.000 ms udisks-daemon - 13020 : 27 [ 0.0% ] 0.240 ms kworker/7:0 - 14651 : 669 [ 0.0% ] 2.616 ms kworker/5:1 - 16220 : 2 [ 0.0% ] 0.069 ms kworker/4:0 - 19776 : 13 [ 0.0% ] 0.176 ms openvpn - 20131 : 133 [ 0.0% ] 0.762 ms plugin-containe - 20508 : 60658 [ 1.7% ] 131.153 ms npviewer.bin - 20520 : 72208 [ 2.0% ] 138.945 ms npviewer.bin - 20542 : 35 [ 0.0% ] 0.074 ms npviewer.bin - 20543 : 30 [ 0.0% ] 0.074 ms npviewer.bin - 20547 : 35 [ 0.0% ] 0.092 ms npviewer.bin - 20552 : 35 [ 0.0% ] 0.093 ms sshd - 20645 : 32 [ 0.0% ] 0.071 ms npviewer.bin - 21053 : 35 [ 0.0% ] 0.074 ms npviewer.bin - 21054 : 35 [ 0.0% ] 0.097 ms kworker/0:2 - 21169 : 149 [ 0.0% ] 1.143 ms kworker/3:0 - 22171 : 113 [ 0.0% ] 96.892 ms flush-253:4 - 22410 : 1 [ 0.0% ] 0.028 ms kworker/6:0 - 24581 : 25 [ 0.0% ] 0.275 ms kworker/1:0 - 25572 : 4 [ 0.0% ] 0.103 ms kworker/2:1 - 26299 : 138 [ 0.0% ] 1.440 ms kworker/0:0 - 26325 : 1 [ 0.0% ] 0.003 ms perf - 26330 : 3506967 [ 96.1% ] 6648.310 ms [root@sandy ~]# Cc: David Ahern <dsahern@gmail.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Mike Galbraith <efault@gmx.de> Cc: Namhyung Kim <namhyung@gmail.com> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Stephane Eranian <eranian@google.com> Cc: Thomas Gleixner <tglx@linutronix.de> Link: http://lkml.kernel.org/n/tip-mzuli0srnxyi1o029py6537x@git.kernel.orgSigned-off-by: -
Arnaldo Carvalho de Melo authored
The nr_events in trace__run was local, but we will need it in other trace methods, move it to struct trace. We'll also need the number of events per thread, so introduce a nr_events method for that in struct thread_trace. Cc: David Ahern <dsahern@gmail.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Mike Galbraith <efault@gmx.de> Cc: Namhyung Kim <namhyung@gmail.com> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Stephane Eranian <eranian@google.com> Link: http://lkml.kernel.org/n/tip-ksutaz0mtejnf7e6az3ca1td@git.kernel.orgSigned-off-by:
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Arnaldo Carvalho de Melo authored
The perf_event__synthesize_threads routine synthesizes all the existing threads in the system, because we don't have any kernel facilities to ask for PERF_RECORD_{FORK,MMAP,COMM} for existing threads. It was returning an error as soon as one thread couldn't be synthesized, which is a bit extreme when, for instance, a forkish workload is running, like a kernel compile. Cc: David Ahern <dsahern@gmail.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Mike Galbraith <efault@gmx.de> Cc: Namhyung Kim <namhyung@gmail.com> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Stephane Eranian <eranian@google.com> Link: http://lkml.kernel.org/n/tip-i7oas1eodpoer2bx38fwyasv@git.kernel.orgSigned-off-by: -
Ingo Molnar authored
Merge tag 'perf-core-for-mingo' of git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux into perf/core Pull perf/core improvements and fixes from Arnaldo Carvalho de Melo: * Align the 'Ok'/'FAILED!' test results in 'perf test. * Support interrupted syscalls in 'trace' * Add an event duration column and filter in 'trace'. * There are references to the man pages in some tools, so try to build Documentation when installing, warning the user if that is not possible, from Borislav Petkov. * Give user better message if precise is not supported, from David Ahern. * Try to find cross-built objdump path by using the session environment information in the perf.data file header, from Irina Tirdea, original patch and idea by Namhyung Kim. * Diplays more output on features check for make V=1, so that one can figure out what is happening by looking at gcc output, etc. From Jiri Olsa. * Account the nr_entries in rblist properly, fix by Suzuki K. Poulose. Signed-off-by:
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- 24 Oct, 2012 8 commits
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Borislav Petkov authored
There's a portion in the "perf list" output refering to the exact specification of raw hardware events. Since this description is in the perf-list manpage, try to build and install the man pages, warning the user when that is not possible due to missing packages (xmlto and asciidoc). Signed-off-by:
Borislav Petkov <borislav.petkov@amd.com> Tested-by:
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Arnaldo Carvalho de Melo authored
When failing to read the tracepoint event format, like currently with sys_execve, that is not defined via SYSCALL_DEFINE macros and thus doesn't have an entry in: $ ls -d /sys/kernel/debug/tracing/events/syscalls/sys_enter_*exec* /sys/kernel/debug/tracing/events/syscalls/sys_enter_kexec_load $ Cc: David Ahern <dsahern@gmail.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Mike Galbraith <efault@gmx.de> Cc: Namhyung Kim <namhyung@gmail.com> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Stephane Eranian <eranian@google.com> Cc: Steven Rostedt <rostedt@goodmis.org> Cc: Thomas Gleixner <tglx@linutronix.de> echo Link: http://lkml.kernel.org/n/tip-`ranpwd -l 24`@git.kernel.org Link: http://lkml.kernel.org/n/tip-q3ak0j8b81yxylykq5wp2uwi@git.kernel.orgSigned-off-by:
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Arnaldo Carvalho de Melo authored
This time: access, open and socket. Cc: David Ahern <dsahern@gmail.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Mike Galbraith <efault@gmx.de> Cc: Namhyung Kim <namhyung@gmail.com> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Stephane Eranian <eranian@google.com> Link: http://lkml.kernel.org/n/tip-e19dmpz8zxqo2uebxnp7ilkf@git.kernel.orgSigned-off-by:
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Arnaldo Carvalho de Melo authored
Example: [acme@sandy linux]$ perf trace --duration 0.025 usleep 1 2.221 ( 0.958 ms): 6724 execve(arg0: 140733557168278, arg1: 140733557178768, arg2: 16134304, arg3: 140733557167840, arg4: 7955998171588342573, arg5: 6723) = -2 3.690 ( 1.443 ms): 6724 execve(arg0: 140733557168295, arg1: 140733557178768, arg2: 16134304, arg3: 140733557167840, arg4: 7955998171588342573, arg5: 6723) = 0 3.979 ( 0.048 ms): 6724 open(filename: 208733843841, flags: 0, mode: 1 ) = 3 4.071 ( 0.075 ms): 6724 open(filename: 139744419925673, flags: 0, mode: 0 ) = 3 4.318 ( 0.056 ms): 6724 nanosleep(rqtp: 140734030404608, rmtp: 0 ) = 0 [acme@sandy linux]$ perf trace --duration 0.100 usleep 1 1.143 ( 1.021 ms): 6726 execve(arg0: 140736323962279, arg1: 140736323972752, arg2: 34926752, arg3: 140736323961824, arg4: 7955998171588342573, arg5: 6725) = 0 [acme@sandy linux]$ Cherry picked from tmp.perf/trace2 branch. Cc: David Ahern <dsahern@gmail.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Mike Galbraith <efault@gmx.de> Cc: Namhyung Kim <namhyung@gmail.com> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Stephane Eranian <eranian@google.com> Cc: Thomas Gleixner <tglx@linutronix.de> Link: http://lkml.kernel.org/n/tip-oslw2j2958we9qf0ctra4whd@git.kernel.orgSigned-off-by: -
Arnaldo Carvalho de Melo authored
# perf trace usleep 1 | tail -10 0.453 ( 0.002 ms): mmap(addr: 0, len: 4096, prot: 3, flags: 34, fd: 4294967295, off: 0 ) = -763342848 0.456 ( 0.001 ms): mmap(addr: 0, len: 4096, prot: 3, flags: 34, fd: 4294967295, off: 0 ) = -763346944 0.459 ( 0.001 ms): arch_prctl(option: 4098, arg2: 140126839658240, arg3: 140126839652352, arg4: 34, arg5: 4294967295) = 0 0.473 ( 0.003 ms): mprotect(start: 208741634048, len: 16384, prot: 1 ) = 0 0.477 ( 0.003 ms): mprotect(start: 208735956992, len: 4096, prot: 1 ) = 0 0.483 ( 0.004 ms): munmap(addr: 140126839664640, len: 91882 ) = 0 0.540 ( 0.001 ms): brk(brk: 0 ) = 31928320 0.542 ( 0.002 ms): brk(brk: 32063488 ) = 32063488 1.456 ( 0.901 ms): nanosleep(rqtp: 140735472817168, rmtp: 0 ) = 0 1.462 ( 0.000 ms): exit_group(error_code: 0 # This also comes from the tmp.perf/trace2 branch. Cc: David Ahern <dsahern@gmail.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Mike Galbraith <efault@gmx.de> Cc: Namhyung Kim <namhyung@gmail.com> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Stephane Eranian <eranian@google.com> Cc: Thomas Gleixner <tglx@linutronix.de> Link: http://lkml.kernel.org/n/tip-g9akh5hjw2kvjerpo9xror6f@git.kernel.orgSigned-off-by: -
Arnaldo Carvalho de Melo authored
Using the same strategies as in the tmp.perf/trace2, i.e. the 'trace' tool implemented by tglx, just updated to the current codebase. Example: [root@sandy linux]# perf trace usleep 1 | tail 2.003: mmap(addr: 0, len: 4096, prot: 3, flags: 34, fd: 4294967295, off: 0 ) = -2128396288 2.017: mmap(addr: 0, len: 4096, prot: 3, flags: 34, fd: 4294967295, off: 0 ) = -2128400384 2.029: arch_prctl(option: 4098, arg2: 140146949441280, arg3: 140146949435392, arg4: 34, arg5: 4294967295) = 0 2.084: mprotect(start: 208741634048, len: 16384, prot: 1 ) = 0 2.098: mprotect(start: 208735956992, len: 4096, prot: 1 ) = 0 2.122: munmap(addr: 140146949447680, len: 91882 ) = 0 2.359: brk(brk: 0 ) = 28987392 2.371: brk(brk: 29122560 ) = 29122560 2.490: nanosleep(rqtp: 140735694241504, rmtp: 0 ) = 0 2.507: exit_group(error_code: 0 [root@sandy linux]# For now the timestamp and duration are always on, will be selectable. Also if multiple threads are being monitored, its tid will appear. The ret output continues to be interpreted a la strace. Cc: David Ahern <dsahern@gmail.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Mike Galbraith <efault@gmx.de> Cc: Namhyung Kim <namhyung@gmail.com> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Stephane Eranian <eranian@google.com> Link: http://lkml.kernel.org/n/tip-ly9ulroru4my5isn0xe9gr0m@git.kernel.orgSigned-off-by: -
Arnaldo Carvalho de Melo authored
And also print 'FAILED!' in red. Suggested-by:
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David Ahern authored
Platforms (e.g., VM's) without support for precise mode get a confusing error message. e.g., $ perf record -e cycles:p -a -- sleep 1 Error: sys_perf_event_open() syscall returned with 95 (Operation not supported). /bin/dmesg may provide additional information. No hardware sampling interrupt available. No APIC? If so then you can boot the kernel with the "lapic" boot parameter to force-enable it. sleep: Terminated which is not clear that precise mode might be the root problem. With this patch: $ perf record -e cycles:p -fo /tmp/perf.data -- sleep 1 Error: 'precise' request may not be supported. Try removing 'p' modifier sleep: Terminated v2: softened message to 'may not be' supported per Robert's suggestion Signed-off-by:
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