[PATCH v1 1/4] perf evsel: Add pmu_name helper

[Ian Rogers <irogers@google.com>]

Add helper to get the name of the evsel's PMU. This handles the case
where there's no sysfs PMU via parse_events event_type helper.

Signed-off-by: Ian Rogers <irogers@google.com>
---
 tools/perf/util/evsel.c | 10 ++++++++++
 tools/perf/util/evsel.h |  1 +
 2 files changed, 11 insertions(+)

diff --git a/tools/perf/util/evsel.c b/tools/perf/util/evsel.c
index f780e30aa259..87ed417df133 100644
--- a/tools/perf/util/evsel.c
+++ b/tools/perf/util/evsel.c
@@ -236,6 +236,16 @@ int evsel__object_config(size_t object_size, int (*init)(struct evsel *evsel),
 	return 0;
 }
 
+const char *evsel__pmu_name(const struct evsel *evsel)
+{
+	struct perf_pmu *pmu = evsel__find_pmu(evsel);
+
+	if (pmu)
+		return pmu->name;
+
+	return event_type(evsel->core.attr.type);
+}
+
 #define FD(e, x, y) (*(int *)xyarray__entry(e->core.fd, x, y))
 
 int __evsel__sample_size(u64 sample_type)
diff --git a/tools/perf/util/evsel.h b/tools/perf/util/evsel.h
index 04934a7af174..5774a9d4d725 100644
--- a/tools/perf/util/evsel.h
+++ b/tools/perf/util/evsel.h
@@ -232,6 +232,7 @@ int evsel__object_config(size_t object_size,
 			 void (*fini)(struct evsel *evsel));
 
 struct perf_pmu *evsel__find_pmu(const struct evsel *evsel);
+const char *evsel__pmu_name(const struct evsel *evsel);
 bool evsel__is_aux_event(const struct evsel *evsel);
 
 struct evsel *evsel__new_idx(struct perf_event_attr *attr, int idx);
-- 
2.47.0.163.g1226f6d8fa-goog