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| author | Adrian Hunter <adrian.hunter@intel.com> | 2022-05-24 10:54:28 +0300 |
|---|---|---|
| committer | Arnaldo Carvalho de Melo <acme@redhat.com> | 2022-05-26 12:36:57 -0300 |
| commit | e665c82a769164a976add4d793e91079ec3d1bae (patch) | |
| tree | 91de3f8911361fc3e27c890fc69c3018899d40ec /tools/perf | |
| parent | 921e3be5a5648f483f80c9ba21ca2942d82d581c (diff) | |
| download | lwn-e665c82a769164a976add4d793e91079ec3d1bae.tar.gz lwn-e665c82a769164a976add4d793e91079ec3d1bae.zip | |
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: 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>
Diffstat (limited to 'tools/perf')
| -rw-r--r-- | tools/perf/arch/x86/util/intel-pt.c | 13 |
1 files changed, 3 insertions, 10 deletions
diff --git a/tools/perf/arch/x86/util/intel-pt.c b/tools/perf/arch/x86/util/intel-pt.c index 2eaac4638aab..0ee93894a0da 100644 --- a/tools/perf/arch/x86/util/intel-pt.c +++ b/tools/perf/arch/x86/util/intel-pt.c @@ -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); |