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Commit 3233b37a authored by Jiri Olsa's avatar Jiri Olsa Committed by Arnaldo Carvalho de Melo
Browse files

perf script: Add --show-round-event to display PERF_RECORD_FINISHED_ROUND 



Adding --show-round-event to display PERF_RECORD_FINISHED_ROUND events
like:

  # perf script --show-round-events 2>/dev/null
               yes  8591 [002] 124177.397597:         18         cpu/mem-stores/P: ff...
               yes  8591 [002] 124177.397615:          1 cpu/mem-loads,ldlat=30/P: ff...
  PERF_RECORD_FINISHED_ROUND
              perf 10380 [001] 124177.397622:          6 cpu/mem-loads,ldlat=30/P: ff...
  PERF_RECORD_FINISHED_ROUND
           swapper     0 [000] 124177.400518:         88         cpu/mem-stores/P: ff...
           swapper     0 [000] 124177.400521:         88         cpu/mem-stores/P: ff...

Signed-off-by: default avatarJiri Olsa <jolsa@kernel.org>
Tested-by: default avatarArnaldo Carvalho de Melo <acme@redhat.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/r/20180206181813.10943-4-jolsa@kernel.org


Signed-off-by: default avatarArnaldo Carvalho de Melo <acme@redhat.com>
parent c3dec27b

tools/perf/Documentation/perf-script.txt

+3 −0
Original line number Diff line number Diff line
@@ -303,6 +303,9 @@ OPTIONS 
--show-lost-events

	Display lost events i.e. events of type PERF_RECORD_LOST.



--show-round-events

	Display finished round events i.e. events of type PERF_RECORD_FINISHED_ROUND.



--demangle::

	Demangle symbol names to human readable form. It's enabled by default,

	disable with --no-demangle.

tools/perf/builtin-script.c

+17 −0
Original line number Diff line number Diff line
@@ -1489,6 +1489,7 @@ struct perf_script { 
	bool			show_switch_events;

	bool			show_namespace_events;

	bool			show_lost_events;

	bool			show_round_events;

	bool			allocated;

	bool			per_event_dump;

	struct cpu_map		*cpus;
@@ -2104,6 +2105,16 @@ process_lost_event(struct perf_tool *tool, 
	return 0;

}



static int

process_finished_round_event(struct perf_tool *tool __maybe_unused,

			     union perf_event *event,

			     struct ordered_events *oe __maybe_unused)



{

	perf_event__fprintf(event, stdout);

	return 0;

}



static void sig_handler(int sig __maybe_unused)

{

	session_done = 1;
@@ -2200,6 +2211,10 @@ static int __cmd_script(struct perf_script *script) 
		script->tool.namespaces = process_namespaces_event;

	if (script->show_lost_events)

		script->tool.lost = process_lost_event;

	if (script->show_round_events) {

		script->tool.ordered_events = false;

		script->tool.finished_round = process_finished_round_event;

	}



	if (perf_script__setup_per_event_dump(script)) {

		pr_err("Couldn't create the per event dump files\n");
@@ -3139,6 +3154,8 @@ int cmd_script(int argc, const char **argv) 
		    "Show namespace events (if recorded)"),

	OPT_BOOLEAN('\0', "show-lost-events", &script.show_lost_events,

		    "Show lost events (if recorded)"),

	OPT_BOOLEAN('\0', "show-round-events", &script.show_round_events,

		    "Show round events (if recorded)"),

	OPT_BOOLEAN('\0', "per-event-dump", &script.per_event_dump,

		    "Dump trace output to files named by the monitored events"),

	OPT_BOOLEAN('f', "force", &symbol_conf.force, "don't complain, do it"),