Commit 6469eb6d authored Aug 14, 2019 by Arnaldo Carvalho de Melo

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>

parent f90a2417

tools/perf/Documentation/perf-script.txt

+3 −0

Original line number	Diff line number	Diff line
		@@ -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],

tools/perf/builtin-script.c

+6 −0

Original line number	Diff line number	Diff line
		@@ -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 };

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