Messages in this thread | | | From | Namhyung Kim <> | Date | Wed, 27 Apr 2022 14:48:32 -0700 | Subject | Re: [PATCH RFC 02/21] libperf evsel: Add perf_evsel__enable_thread() |
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Hi Adrian,
On Fri, Apr 22, 2022 at 9:24 AM Adrian Hunter <adrian.hunter@intel.com> wrote: > > Add perf_evsel__enable_thread() as a counterpart to > perf_evsel__enable_cpu(), to enable all events for a thread. > > Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> > --- > tools/lib/perf/evsel.c | 10 ++++++++++ > tools/lib/perf/include/perf/evsel.h | 1 + > 2 files changed, 11 insertions(+) > > diff --git a/tools/lib/perf/evsel.c b/tools/lib/perf/evsel.c > index 20ae9f5f8b30..2a1f07f877be 100644 > --- a/tools/lib/perf/evsel.c > +++ b/tools/lib/perf/evsel.c > @@ -360,6 +360,16 @@ int perf_evsel__enable_cpu(struct perf_evsel *evsel, int cpu_map_idx) > return perf_evsel__run_ioctl(evsel, PERF_EVENT_IOC_ENABLE, NULL, cpu_map_idx); > } > > +int perf_evsel__enable_thread(struct perf_evsel *evsel, int thread) > +{ > + int err = 0; > + int i; > + > + for (i = 0; i < xyarray__max_x(evsel->fd) && !err; i++) > + err = perf_evsel__ioctl(evsel, PERF_EVENT_IOC_ENABLE, NULL, i, thread);
You might want to break the loop when it fails.
Thanks, Namhyung
> + return err; > +} > + > int perf_evsel__enable(struct perf_evsel *evsel) > { > int i; > diff --git a/tools/lib/perf/include/perf/evsel.h b/tools/lib/perf/include/perf/evsel.h > index 2a9516b42d15..699c0ed97d34 100644 > --- a/tools/lib/perf/include/perf/evsel.h > +++ b/tools/lib/perf/include/perf/evsel.h > @@ -36,6 +36,7 @@ LIBPERF_API int perf_evsel__read(struct perf_evsel *evsel, int cpu_map_idx, int > struct perf_counts_values *count); > LIBPERF_API int perf_evsel__enable(struct perf_evsel *evsel); > LIBPERF_API int perf_evsel__enable_cpu(struct perf_evsel *evsel, int cpu_map_idx); > +LIBPERF_API int perf_evsel__enable_thread(struct perf_evsel *evsel, int thread); > LIBPERF_API int perf_evsel__disable(struct perf_evsel *evsel); > LIBPERF_API int perf_evsel__disable_cpu(struct perf_evsel *evsel, int cpu_map_idx); > LIBPERF_API struct perf_cpu_map *perf_evsel__cpus(struct perf_evsel *evsel); > -- > 2.25.1 >
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