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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 v6 2/7] perf util: Get the evsel_streams by evsel_idx
Date: Fri, 11 Sep 2020 16:03:48 +0800	[thread overview]
Message-ID: <20200911080353.13359-3-yao.jin@linux.intel.com> (raw)
In-Reply-To: <20200911080353.13359-1-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>
---
 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 | 11 +++++++++++
 tools/perf/util/stream.h |  3 +++
 2 files changed, 14 insertions(+)

diff --git a/tools/perf/util/stream.c b/tools/perf/util/stream.c
index 015c1d07ce3a..7882a7f05d97 100644
--- a/tools/perf/util/stream.c
+++ b/tools/perf/util/stream.c
@@ -146,3 +146,14 @@ struct evsel_streams *perf_evlist__create_streams(struct evlist *evlist,
 
 	return es;
 }
+
+struct evsel_streams *evsel_streams_get(struct evsel_streams *es,
+					int nr_evsel, int evsel_idx)
+{
+	for (int i = 0; i < 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 c6844c5787cb..66f61d954eef 100644
--- a/tools/perf/util/stream.h
+++ b/tools/perf/util/stream.h
@@ -20,4 +20,7 @@ struct evlist;
 struct evsel_streams *perf_evlist__create_streams(struct evlist *evlist,
 						  int nr_streams_max);
 
+struct evsel_streams *evsel_streams_get(struct evsel_streams *es,
+					int nr_evsel, int evsel_idx);
+
 #endif /* __PERF_STREAM_H */
-- 
2.17.1


  parent reply	other threads:[~2020-09-11  8:05 UTC|newest]

Thread overview: 18+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-09-11  8:03 [PATCH v6 0/7] perf: Stream comparison Jin Yao
2020-09-11  8:03 ` [PATCH v6 1/7] perf util: Create streams Jin Yao
2020-09-17 20:20   ` Arnaldo Carvalho de Melo
2020-09-11  8:03 ` Jin Yao [this message]
2020-09-17 20:23   ` [PATCH v6 2/7] perf util: Get the evsel_streams by evsel_idx Arnaldo Carvalho de Melo
2020-09-11  8:03 ` [PATCH v6 3/7] perf util: Compare two streams Jin Yao
2020-09-11  8:03 ` [PATCH v6 4/7] perf util: Link stream pair Jin Yao
2020-09-17 20:23   ` Arnaldo Carvalho de Melo
2020-09-11  8:03 ` [PATCH v6 5/7] perf util: Calculate the sum of total streams hits Jin Yao
2020-09-11  8:03 ` [PATCH v6 6/7] perf util: Report hot streams Jin Yao
2020-09-11  8:03 ` [PATCH v6 7/7] perf diff: Support hot streams comparison Jin Yao
2020-09-17 20:26   ` Arnaldo Carvalho de Melo
2020-09-18  6:58     ` Jin, Yao
2020-09-19  4:41     ` Jin, Yao
2020-09-21 12:17       ` Arnaldo Carvalho de Melo
2020-09-17 13:05 ` [PATCH v6 0/7] perf: Stream comparison Jiri Olsa
2020-09-17 20:13   ` Arnaldo Carvalho de Melo
2020-09-18  6:54     ` Jin, Yao

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