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

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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: Adrian Hunter <adrian.hunter@intel.com>
Acked-by: Ian Rogers <irogers@google.com>
Acked-by: Namhyung 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: Arnaldo Carvalho de Melo <acme@redhat.com>
This commit is contained in:
Adrian Hunter 2022-05-24 10:54:28 +03:00 committed by Arnaldo Carvalho de Melo
parent 921e3be5a5
commit e665c82a76
1 changed files with 3 additions and 10 deletions
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13
tools/perf/arch/x86/util/intel-pt.c
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@ -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__add_dummy_on_all_cpus(evlist);
if (!switch_evsel)
return -ENOMEM;
switch_evsel = evlist__last(evlist);
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);