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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 v1 03/14] perf util: Return per-event callchain streams
Date: Tue, 10 Mar 2020 15:02:34 +0800	[thread overview]
Message-ID: <20200310070245.16314-4-yao.jin@linux.intel.com> (raw)
In-Reply-To: <20200310070245.16314-1-yao.jin@linux.intel.com>

In previous patch, we have created a 'struct callchain_streams'
array and each array entry contains per-event callchain streams.

This patch returns the pointer of per-event callchain streams
according to the evsel_idx.

Signed-off-by: Jin Yao <yao.jin@linux.intel.com>
---
 tools/perf/util/callchain.c | 12 ++++++++++++
 tools/perf/util/callchain.h |  4 ++++
 2 files changed, 16 insertions(+)

diff --git a/tools/perf/util/callchain.c b/tools/perf/util/callchain.c
index d9c68a8e7619..31ecc1abe7f9 100644
--- a/tools/perf/util/callchain.c
+++ b/tools/perf/util/callchain.c
@@ -1724,3 +1724,15 @@ struct callchain_streams *callchain_evsel_streams_create(struct evlist *evlist,
 	*nr_evsel_streams = nr_evsel;
 	return callchain_streams;
 }
+
+struct callchain_streams *callchain_evsel_streams_get(struct callchain_streams *cs,
+						      int nr_streams_max,
+						      int evsel_idx)
+{
+	for (int i = 0; i < nr_streams_max; i++) {
+		if (cs[i].evsel_idx == evsel_idx)
+			return &cs[i];
+	}
+
+	return NULL;
+}
diff --git a/tools/perf/util/callchain.h b/tools/perf/util/callchain.h
index 5852990cdf60..4e881361e154 100644
--- a/tools/perf/util/callchain.h
+++ b/tools/perf/util/callchain.h
@@ -305,4 +305,8 @@ struct callchain_streams *callchain_evsel_streams_create(struct evlist *evlist,
 							 int nr_streams_max,
 							 int *nr_evsel_streams);
 
+struct callchain_streams *callchain_evsel_streams_get(struct callchain_streams *cs,
+						      int nr_streams_max,
+						      int evsel_idx);
+
 #endif	/* __PERF_CALLCHAIN_H */
-- 
2.17.1


  parent reply	other threads:[~2020-03-10  7:03 UTC|newest]

Thread overview: 23+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-03-10  7:02 [PATCH v1 00/14] perf: Stream comparison Jin Yao
2020-03-10  7:02 ` [PATCH v1 01/14] perf util: Create source line mapping table Jin Yao
2020-03-10 15:08   ` Arnaldo Carvalho de Melo
2020-03-11  5:33     ` Jin, Yao
2020-03-10  7:02 ` [PATCH v1 02/14] perf util: Create streams for managing top N hottest callchains Jin Yao
2020-03-10 15:11   ` Arnaldo Carvalho de Melo
2020-03-11  5:38     ` Jin, Yao
2020-03-10  7:02 ` Jin Yao [this message]
2020-03-10  7:02 ` [PATCH v1 04/14] perf util: Compare two streams Jin Yao
2020-03-10  7:02 ` [PATCH v1 05/14] perf util: Calculate the sum of all streams hits Jin Yao
2020-03-10 15:14   ` Arnaldo Carvalho de Melo
2020-03-11  5:44     ` Jin, Yao
2020-03-10  7:02 ` [PATCH v1 06/14] perf util: Report hot streams Jin Yao
2020-03-10  7:02 ` [PATCH v1 07/14] perf diff: Support hot streams comparison Jin Yao
2020-03-10  7:02 ` [PATCH v1 08/14] perf util: Add new block info functions for top N hot blocks comparison Jin Yao
2020-03-10 15:17   ` Arnaldo Carvalho de Melo
2020-03-11  5:47     ` Jin, Yao
2020-03-10  7:02 ` [PATCH v1 09/14] perf util: Add new block info fmts for showing " Jin Yao
2020-03-10  7:02 ` [PATCH v1 10/14] perf util: Enable block source line comparison Jin Yao
2020-03-10  7:02 ` [PATCH v1 11/14] perf diff: support hot blocks comparison Jin Yao
2020-03-10  7:02 ` [PATCH v1 12/14] perf util: Filter out streams by name of changed functions Jin Yao
2020-03-10  7:02 ` [PATCH v1 13/14] perf util: Filter out blocks " Jin Yao
2020-03-10  7:02 ` [PATCH v1 14/14] perf diff: Filter out streams by " Jin Yao

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