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: Adrian 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: Arnaldo Carvalho de Melo <acme@redhat.com>
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@ -69,15 +69,26 @@ static void perf_probe_sample_identifier(struct perf_evsel *evsel)
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evsel->attr.sample_type |= PERF_SAMPLE_IDENTIFIER;
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evsel->attr.sample_type |= PERF_SAMPLE_IDENTIFIER;
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}
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}
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static void perf_probe_comm_exec(struct perf_evsel *evsel)
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{
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evsel->attr.comm_exec = 1;
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}
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bool perf_can_sample_identifier(void)
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bool perf_can_sample_identifier(void)
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{
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{
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return perf_probe_api(perf_probe_sample_identifier);
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return perf_probe_api(perf_probe_sample_identifier);
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}
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}
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static bool perf_can_comm_exec(void)
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{
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return perf_probe_api(perf_probe_comm_exec);
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}
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void perf_evlist__config(struct perf_evlist *evlist, struct record_opts *opts)
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void perf_evlist__config(struct perf_evlist *evlist, struct record_opts *opts)
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{
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{
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struct perf_evsel *evsel;
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struct perf_evsel *evsel;
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bool use_sample_identifier = false;
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bool use_sample_identifier = false;
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bool use_comm_exec;
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/*
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/*
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* Set the evsel leader links before we configure attributes,
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* Set the evsel leader links before we configure attributes,
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@ -89,8 +100,13 @@ void perf_evlist__config(struct perf_evlist *evlist, struct record_opts *opts)
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if (evlist->cpus->map[0] < 0)
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if (evlist->cpus->map[0] < 0)
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opts->no_inherit = true;
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opts->no_inherit = true;
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evlist__for_each(evlist, evsel)
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use_comm_exec = perf_can_comm_exec();
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evlist__for_each(evlist, evsel) {
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perf_evsel__config(evsel, opts);
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perf_evsel__config(evsel, opts);
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if (!evsel->idx && use_comm_exec)
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evsel->attr.comm_exec = 1;
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}
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if (evlist->nr_entries > 1) {
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if (evlist->nr_entries > 1) {
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struct perf_evsel *first = perf_evlist__first(evlist);
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struct perf_evsel *first = perf_evlist__first(evlist);
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