Commit e665c82a authored by Adrian Hunter's avatar Adrian Hunter Committed by Arnaldo Carvalho de Melo
Browse files

perf intel-pt: Use evlist__add_dummy_on_all_cpus() for switch tracking 



Use evlist__add_dummy_on_all_cpus() for switch tracking in preparation for
allowing system-wide events on all CPUs while the user requested events are
on only user requested CPUs.

Signed-off-by: default avatarAdrian Hunter <adrian.hunter@intel.com>
Acked-by: default avatarIan Rogers <irogers@google.com>
Acked-by: default avatarNamhyung Kim <namhyung@kernel.org>
Cc: Alexey Bayduraev <alexey.v.bayduraev@linux.intel.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Leo Yan <leo.yan@linaro.org>
Link: https://lore.kernel.org/r/20220524075436.29144-8-adrian.hunter@intel.com


Signed-off-by: default avatarArnaldo Carvalho de Melo <acme@redhat.com>
parent 921e3be5

tools/perf/arch/x86/util/intel-pt.c

+3 −10
Original line number Diff line number Diff line
@@ -811,18 +811,11 @@ static int intel_pt_recording_options(struct auxtrace_record *itr, 
			if (!cpu_wide && perf_can_record_cpu_wide()) {

				struct evsel *switch_evsel;



				err = parse_events(evlist, "dummy:u", NULL);

				if (err)

					return err;



				switch_evsel = evlist__last(evlist);

				switch_evsel = evlist__add_dummy_on_all_cpus(evlist);

				if (!switch_evsel)

					return -ENOMEM;



				switch_evsel->core.attr.freq = 0;

				switch_evsel->core.attr.sample_period = 1;

				switch_evsel->core.attr.context_switch = 1;



				switch_evsel->core.system_wide = true;

				switch_evsel->no_aux_samples = true;

				switch_evsel->immediate = true;



				evsel__set_sample_bit(switch_evsel, TID);