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From: Jin Yao <yao.jin@linux.intel.com>
To: acme@kernel.org, jolsa@kernel.org, peterz@infradead.org,
	mingo@redhat.com, alexander.shishkin@linux.intel.com
Cc: Linux-kernel@vger.kernel.org, ak@linux.intel.com,
	kan.liang@intel.com, yao.jin@intel.com,
	Jin Yao <yao.jin@linux.intel.com>
Subject: [PATCH v8 2/7] perf util: Get the evsel_streams by evsel_idx
Date: Fri,  9 Oct 2020 10:28:40 +0800	[thread overview]
Message-ID: <20201009022845.13141-3-yao.jin@linux.intel.com> (raw)
In-Reply-To: <20201009022845.13141-1-yao.jin@linux.intel.com>

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>
---
 v8:
   - No change

 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


  parent reply	other threads:[~2020-10-09  2:29 UTC|newest]

Thread overview: 9+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-10-09  2:28 [PATCH v8 0/7] perf: Stream comparison Jin Yao
2020-10-09  2:28 ` [PATCH v8 1/7] perf util: Create streams Jin Yao
2020-10-09  2:28 ` Jin Yao [this message]
2020-10-09  2:28 ` [PATCH v8 3/7] perf util: Compare two streams Jin Yao
2020-10-09  2:28 ` [PATCH v8 4/7] perf util: Link stream pair Jin Yao
2020-10-09  2:28 ` [PATCH v8 5/7] perf util: Calculate the sum of total streams hits Jin Yao
2020-10-09  2:28 ` [PATCH v8 6/7] perf util: Report hot streams Jin Yao
2020-10-09  2:28 ` [PATCH v8 7/7] perf diff: Support hot streams comparison Jin Yao
2020-10-13  4:25 ` [PATCH v8 0/7] perf: Stream comparison Jin, Yao

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