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perf script: Allow showing the --switch-on event 

One may want to see the --switch-on event as well, allow for that, using
the previous cset example:

  # perf script --switch-on syscalls:sys_enter_nanosleep --show-on-off
        sleep 13638 [001] 108237.582286: syscalls:sys_enter_nanosleep: rqtp: 0x7fff1948ac40, rmtp: 0x00000000
        sleep 13638 [001] 108237.582289:     sched:sched_stat_runtime: comm=sleep pid=13638 runtime=578104 [ns] vruntime=202889459556 [ns]
        sleep 13638 [001] 108237.582291:           sched:sched_switch: sleep:13638 [120] S ==> swapper/1:0 [120]
      swapper     0 [001] 108238.582428:           sched:sched_waking: comm=sleep pid=13638 prio=120 target_cpu=001
      swapper     0 [001] 108238.582458:           sched:sched_wakeup: sleep:13638 [120] success=1 CPU:001
        sleep 13638 [001] 108238.582698:     sched:sched_stat_runtime: comm=sleep pid=13638 runtime=173915 [ns] vruntime=202889633471 [ns]
        sleep 13638 [001] 108238.582782:     sched:sched_process_exit: comm=sleep pid=13638 prio=120
  #
  # perf script --switch-on syscalls:sys_enter_nanosleep
        sleep 13638 [001] 108237.582289:     sched:sched_stat_runtime: comm=sleep pid=13638 runtime=578104 [ns] vruntime=202889459556 [ns]
        sleep 13638 [001] 108237.582291:           sched:sched_switch: sleep:13638 [120] S ==> swapper/1:0 [120]
      swapper     0 [001] 108238.582428:           sched:sched_waking: comm=sleep pid=13638 prio=120 target_cpu=001
      swapper     0 [001] 108238.582458:           sched:sched_wakeup: sleep:13638 [120] success=1 CPU:001
        sleep 13638 [001] 108238.582698:     sched:sched_stat_runtime: comm=sleep pid=13638 runtime=173915 [ns] vruntime=202889633471 [ns]
        sleep 13638 [001] 108238.582782:     sched:sched_process_exit: comm=sleep pid=13638 prio=120
  #

Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: William Cohen <wcohen@redhat.com>
Cc: Florian Weimer <fweimer@redhat.com>
Link: https://lkml.kernel.org/n/tip-0omwwoywj1v63gu8cz0tr0cy@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
This commit is contained in:
Arnaldo Carvalho de Melo 2019-08-14 16:40:58 -03:00
parent f90a24171a
commit 6469eb6dff
2 changed files with 9 additions and 0 deletions
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3
tools/perf/Documentation/perf-script.txt
View File

@ -420,6 +420,9 @@ include::itrace.txt[]
--switch-on EVENT_NAME::
Only consider events after this event is found.
--show-on-off-events::
Show the --switch-on event too.
SEE ALSO
--------
linkperf:perf-record[1], linkperf:perf-script-perl[1],

6
tools/perf/builtin-script.c
View File

@ -1619,6 +1619,7 @@ static int perf_sample__fprintf_synth(struct perf_sample *sample,
struct evswitch {
struct evsel *on;
bool discarding;
bool show_on_off_events;
};
struct perf_script {
@ -1816,6 +1817,9 @@ static void process_event(struct perf_script *script,
return;
script->evswitch.discarding = false;
if (!script->evswitch.show_on_off_events)
return;
}
++es->samples;
@ -3554,6 +3558,8 @@ int cmd_script(int argc, const char **argv)
"file", "file saving guest os /proc/modules"),
OPT_STRING(0, "switch-on", &event_switch_on,
"event", "Consider events from the first ocurrence of this event"),
OPT_BOOLEAN(0, "show-on-off-events", &script.evswitch.show_on_off_events,
"Show the on/off switch events, used with --switch-on"),
OPT_END()
};
const char * const script_subcommands[] = { "record", "report", NULL };