linux-kernel - [tip:perf/urgent] perf tools: Tag thread comm as overriden

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Date:	Wed, 20 Nov 2013 05:55:12 -0800
From:	tip-bot for Frederic Weisbecker <tipbot@...or.com>
To:	linux-tip-commits@...r.kernel.org
Cc:	acme@...hat.com, linux-kernel@...r.kernel.org, hpa@...or.com,
	mingo@...nel.org, namhyung@...nel.org, fweisbec@...il.com,
	dsahern@...il.com, tglx@...utronix.de
Subject: [tip:perf/urgent] perf tools: Tag thread comm as overriden

Commit-ID:  a5285ad9e30fd90b88a11adcab97bd4c3ffe44eb
Gitweb:     http://git.kernel.org/tip/a5285ad9e30fd90b88a11adcab97bd4c3ffe44eb
Author:     Frederic Weisbecker <fweisbec@...il.com>
AuthorDate: Sat, 16 Nov 2013 02:02:09 +0100
Committer:  Arnaldo Carvalho de Melo <acme@...hat.com>
CommitDate: Tue, 19 Nov 2013 10:33:29 -0300

perf tools: Tag thread comm as overriden

The problem is that when a thread overrides its default ":%pid" comm, we
forget to tag the thread comm as overriden. Hence, this overriden comm
is not inherited on future forks. Fix it.

Signed-off-by: Frederic Weisbecker <fweisbec@...il.com>
Tested-by: David Ahern <dsahern@...il.com>
Acked-by: Namhyung Kim <namhyung@...nel.org>
Cc: David Ahern <dsahern@...il.com>
Cc: Ingo Molnar <mingo@...nel.org>
Cc: Namhyung Kim <namhyung@...nel.org>
Link: http://lkml.kernel.org/r/20131116010207.GA18855@localhost.localdomain
Signed-off-by: Arnaldo Carvalho de Melo <acme@...hat.com>
---
 tools/perf/util/thread.c | 11 +++++------
 1 file changed, 5 insertions(+), 6 deletions(-)

diff --git a/tools/perf/util/thread.c b/tools/perf/util/thread.c
index cd8e2f5..49eaf1d 100644
--- a/tools/perf/util/thread.c
+++ b/tools/perf/util/thread.c
@@ -70,14 +70,13 @@ int thread__set_comm(struct thread *thread, const char *str, u64 timestamp)
 	/* Override latest entry if it had no specific time coverage */
 	if (!curr->start) {
 		comm__override(curr, str, timestamp);
-		return 0;
+	} else {
+		new = comm__new(str, timestamp);
+		if (!new)
+			return -ENOMEM;
+		list_add(&new->list, &thread->comm_list);
 	}
 
-	new = comm__new(str, timestamp);
-	if (!new)
-		return -ENOMEM;
-
-	list_add(&new->list, &thread->comm_list);
 	thread->comm_set = true;
 
 	return 0;
--
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