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authorNamhyung Kim <namhyung@kernel.org>2013-11-26 17:51:12 +0900
committerArnaldo Carvalho de Melo <acme@redhat.com>2013-11-27 14:58:38 -0300
commitad7ebb9a48f59bad2714b64725653a73d78b686e (patch)
treeba1456286d67e8562a03b1232030a2dcea8110b7 /tools/perf/Documentation/perf-script.txt
parent80b8b496ec6edaff01f9ab74dbe8a517cd718de8 (diff)
downloadlinux-ad7ebb9a48f59bad2714b64725653a73d78b686e.tar.gz
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.txt3
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],