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Commit 39e09d40 authored by Adrian Hunter's avatar Adrian Hunter Committed by Arnaldo Carvalho de Melo
Browse files

perf record: Select comm_exec flag if supported 



The comm_exec flag on the attribute can later be found in the perf.data
file allowing a tool to know in advance if the captured data has the
flag.

Signed-off-by: default avatarAdrian Hunter <adrian.hunter@intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Namhyung Kim <namhyung@gmail.com>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lkml.kernel.org/r/1405332185-4050-5-git-send-email-adrian.hunter@intel.com


Signed-off-by: default avatarArnaldo Carvalho de Melo <acme@redhat.com>
parent 022c50d0

tools/perf/util/record.c

+17 −1
Original line number Diff line number Diff line
@@ -69,15 +69,26 @@ static void perf_probe_sample_identifier(struct perf_evsel *evsel) 
	evsel->attr.sample_type |= PERF_SAMPLE_IDENTIFIER;

}



static void perf_probe_comm_exec(struct perf_evsel *evsel)

{

	evsel->attr.comm_exec = 1;

}



bool perf_can_sample_identifier(void)

{

	return perf_probe_api(perf_probe_sample_identifier);

}



static bool perf_can_comm_exec(void)

{

	return perf_probe_api(perf_probe_comm_exec);

}



void perf_evlist__config(struct perf_evlist *evlist, struct record_opts *opts)

{

	struct perf_evsel *evsel;

	bool use_sample_identifier = false;

	bool use_comm_exec;



	/*

	 * Set the evsel leader links before we configure attributes,
@@ -89,8 +100,13 @@ void perf_evlist__config(struct perf_evlist *evlist, struct record_opts *opts) 
	if (evlist->cpus->map[0] < 0)

		opts->no_inherit = true;



	evlist__for_each(evlist, evsel)

	use_comm_exec = perf_can_comm_exec();



	evlist__for_each(evlist, evsel) {

		perf_evsel__config(evsel, opts);

		if (!evsel->idx && use_comm_exec)

			evsel->attr.comm_exec = 1;

	}



	if (evlist->nr_entries > 1) {

		struct perf_evsel *first = perf_evlist__first(evlist);