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| author | Namhyung Kim <namhyung@kernel.org> | 2013-11-26 09:51:12 +0100 |
|---|---|---|
| committer | Arnaldo Carvalho de Melo <acme@redhat.com> | 2013-11-27 18:58:38 +0100 |
| commit | ad7ebb9a48f59bad2714b64725653a73d78b686e (patch) | |
| tree | ba1456286d67e8562a03b1232030a2dcea8110b7 /tools/perf/Documentation/perf-script.txt | |
| parent | perf script: Print callchains and symbols if they exist (diff) | |
| download | linux-ad7ebb9a48f59bad2714b64725653a73d78b686e.tar.xz linux-ad7ebb9a48f59bad2714b64725653a73d78b686e.zip | |
perf script: Print comm, fork and exit events also
If --show-task-events option is given, also print internal COMM, FORK
and EXIT events. It would be helpful for debugging.
$ perf script --show-task-events
...
swapper 0 [009] 3350640.335261: sched:sched_switch: prev_comm=swapper/9
sleep 9486 [009] 3350640.335509: PERF_RECORD_COMM: sleep:9486
sleep 9486 [009] 3350640.335806: sched:sched_stat_runtime: comm=sleep pid=9486
firefox 2635 [003] 3350641.275896: PERF_RECORD_FORK(2635:9487):(2635:2635)
firefox 2635 [003] 3350641.275896: sched:sched_process_fork: comm=firefox pid=2635
sleep 9486 [009] 3350641.336009: PERF_RECORD_EXIT(9486:9486):(9486:9486)
Signed-off-by: Namhyung Kim <namhyung@kernel.org>
Suggested-by: Frederic Weisbecker <fweisbec@gmail.com>
Reviewed-by: David Ahern <dsahern@gmail.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Namhyung Kim <namhyung.kim@lge.com>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/r/1385455873-25865-1-git-send-email-namhyung@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'tools/perf/Documentation/perf-script.txt')
| -rw-r--r-- | tools/perf/Documentation/perf-script.txt | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/tools/perf/Documentation/perf-script.txt b/tools/perf/Documentation/perf-script.txt index e9cbfcddfa3f..67af9b77ea78 100644 --- a/tools/perf/Documentation/perf-script.txt +++ b/tools/perf/Documentation/perf-script.txt @@ -203,6 +203,9 @@ OPTIONS --show-kernel-path:: Try to resolve the path of [kernel.kallsyms] +--show-task-events + Display task related events (e.g. FORK, COMM, EXIT). + SEE ALSO -------- linkperf:perf-record[1], linkperf:perf-script-perl[1], |