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Subject[PATCH V3 09/12] perf evsel: expose perf_missing_features.write_backward
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From: Kan Liang <kan.liang@intel.com>

perf top need it to handle overwrite fallback later.

Signed-off-by: Kan Liang <kan.liang@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 a4d256e..be67149 100644
--- a/tools/perf/util/evsel.c
+++ b/tools/perf/util/evsel.c
@@ -1669,6 +1669,11 @@ static bool ignore_missing_thread(struct perf_evsel *evsel,
return true;
}

+bool is_write_backward_fail(void)
+{
+ return perf_missing_features.write_backward;
+}
+
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
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