Em Thu, Jan 18, 2018 at 01:26:27PM -0800, kan.li...@intel.com escreveu: > From: Kan Liang <kan.li...@intel.com> > > perf top need it to handle overwrite fallback later. > > Signed-off-by: Kan Liang <kan.li...@intel.com> > --- > tools/perf/util/evsel.c | 5 +++++ > tools/perf/util/evsel.h | 2 ++ > 2 files changed, 7 insertions(+) > > diff --git a/tools/perf/util/evsel.c b/tools/perf/util/evsel.c > index 4eea3b4..1dd3700 100644 > --- a/tools/perf/util/evsel.c > +++ b/tools/perf/util/evsel.c > @@ -1670,6 +1670,11 @@ static bool ignore_missing_thread(struct perf_evsel > *evsel, > return true; > } > > +bool is_write_backward_fail(void) > +{ > + return perf_missing_features.write_backward; > +} > +
Humm, I think we better expose perf_missing_features, i.e. tools using if (perf_missing_features.write_backward) looks more clear than: if (is_write_backward_fail()) This is minor, so I'm doing this myself, please holler if you disagree. - Arnaldo > int perf_evsel__open(struct perf_evsel *evsel, struct cpu_map *cpus, > struct thread_map *threads) > { > diff --git a/tools/perf/util/evsel.h b/tools/perf/util/evsel.h > index 846e416..1f46728 100644 > --- a/tools/perf/util/evsel.h > +++ b/tools/perf/util/evsel.h > @@ -448,4 +448,6 @@ int perf_event_attr__fprintf(FILE *fp, struct > perf_event_attr *attr, > > struct perf_env *perf_evsel__env(struct perf_evsel *evsel); > > +bool is_write_backward_fail(void); > + > #endif /* __PERF_EVSEL_H */ > -- > 2.5.5