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Subject[PATCH v7 2/7] perf util: Get the evsel_streams by evsel_idx
Date
In previous patch, we have created evsel_streams array

This patch returns the specified evsel_streams according to the
evsel_idx.

Signed-off-by: Jin Yao <yao.jin@linux.intel.com>
---
v7:
- Rename functions:
evsel_streams__entry

v6:
- Rebase to perf/core

v5:
- Rebase to perf/core

v4:
- Rename the patch from 'perf util: Return per-event callchain
streams' to 'perf util: Get the evsel_streams by evsel_idx'

tools/perf/util/stream.c | 13 +++++++++++++
tools/perf/util/stream.h | 3 +++
2 files changed, 16 insertions(+)

diff --git a/tools/perf/util/stream.c b/tools/perf/util/stream.c
index 31efe4ae0f55..e1c7d6c6126b 100644
--- a/tools/perf/util/stream.c
+++ b/tools/perf/util/stream.c
@@ -162,3 +162,16 @@ struct evlist_streams *evlist__create_streams(struct evlist *evlist,

return els;
}
+
+struct evsel_streams *evsel_streams__entry(struct evlist_streams *els,
+ int evsel_idx)
+{
+ struct evsel_streams *es = els->ev_streams;
+
+ for (int i = 0; i < els->nr_evsel; i++) {
+ if (es[i].evsel_idx == evsel_idx)
+ return &es[i];
+ }
+
+ return NULL;
+}
diff --git a/tools/perf/util/stream.h b/tools/perf/util/stream.h
index 35bc64df554c..f01335677479 100644
--- a/tools/perf/util/stream.h
+++ b/tools/perf/util/stream.h
@@ -27,4 +27,7 @@ void evlist_streams__delete(struct evlist_streams *els);
struct evlist_streams *evlist__create_streams(struct evlist *evlist,
int nr_streams_max);

+struct evsel_streams *evsel_streams__entry(struct evlist_streams *els,
+ int evsel_idx);
+
#endif /* __PERF_STREAM_H */
--
2.17.1
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