linux-kernel - [tip:perf/core] perf evlist: Fix set event list leader

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Message-ID: <tip-74b2133d19e776924b2773e27dd9d6940f1cc594@git.kernel.org>
Date:	Wed, 6 Feb 2013 14:01:14 -0800
From:	tip-bot for Stephane Eranian <eranian@...gle.com>
To:	linux-tip-commits@...r.kernel.org
Cc:	acme@...hat.com, linux-kernel@...r.kernel.org, eranian@...gle.com,
	hpa@...or.com, mingo@...nel.org, peterz@...radead.org,
	namhyung.kim@....com, namhyung@...nel.org, jolsa@...hat.com,
	tglx@...utronix.de, mingo@...e.hu
Subject: [tip:perf/core] perf evlist: Fix set event list leader

Commit-ID:  74b2133d19e776924b2773e27dd9d6940f1cc594
Gitweb:     http://git.kernel.org/tip/74b2133d19e776924b2773e27dd9d6940f1cc594
Author:     Stephane Eranian <eranian@...gle.com>
AuthorDate: Thu, 31 Jan 2013 13:54:37 +0100
Committer:  Arnaldo Carvalho de Melo <acme@...hat.com>
CommitDate: Wed, 6 Feb 2013 18:09:25 -0300

perf evlist: Fix set event list leader

The __perf_evlist__set_leader() was setting the leader for all events in
the list except the first. Which means it assumed the first event
already had event->leader = event.

Seems like this should be the role of the function to also do this. This
is a requirement for an upcoming patch set.

Signed-off-by: Stephane Eranian <eranian@...gle.com>
Acked-by: Jiri Olsa <jolsa@...hat.com>
Tested-by: Jiri Olsa <jolsa@...hat.com>
Acked-by: Namhyung Kim <namhyung@...nel.org>
Cc: Ingo Molnar <mingo@...e.hu>
Cc: Jiri Olsa <jolsa@...hat.com>
Cc: Namhyung Kim <namhyung.kim@....com>
Cc: Peter Zijlstra <peterz@...radead.org>
Link: http://lkml.kernel.org/r/20130131125437.GA3656@quad
Signed-off-by: Arnaldo Carvalho de Melo <acme@...hat.com>
---
 tools/perf/util/evlist.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/tools/perf/util/evlist.c b/tools/perf/util/evlist.c
index eddd5eb..ecf123e 100644
--- a/tools/perf/util/evlist.c
+++ b/tools/perf/util/evlist.c
@@ -122,8 +122,7 @@ void __perf_evlist__set_leader(struct list_head *list)
 	leader->nr_members = evsel->idx - leader->idx + 1;
 
 	list_for_each_entry(evsel, list, node) {
-		if (evsel != leader)
-			evsel->leader = leader;
+		evsel->leader = leader;
 	}
 }
 
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