linux-kernel - [tip:perf/urgent] perf session: Free cpu_map in perf_session__cpu

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Date:	Thu, 23 Jan 2014 09:03:37 -0800
From:	tip-bot for Stanislav Fomichev <tipbot@...or.com>
To:	linux-tip-commits@...r.kernel.org
Cc:	acme@...hat.com, linux-kernel@...r.kernel.org, paulus@...ba.org,
	mingo@...hat.com, hpa@...or.com, mingo@...nel.org,
	a.p.zijlstra@...llo.nl, namhyung@...nel.org, jolsa@...hat.com,
	stfomichev@...dex-team.ru, adrian.hunter@...el.com,
	dsahern@...il.com, tglx@...utronix.de
Subject: [tip:perf/urgent] perf session:
  Free cpu_map in perf_session__cpu_bitmap

Commit-ID:  8bac41cbfe2efe55e2b93673b84761ed7dd75f69
Gitweb:     http://git.kernel.org/tip/8bac41cbfe2efe55e2b93673b84761ed7dd75f69
Author:     Stanislav Fomichev <stfomichev@...dex-team.ru>
AuthorDate: Mon, 20 Jan 2014 15:39:39 +0400
Committer:  Arnaldo Carvalho de Melo <acme@...hat.com>
CommitDate: Mon, 20 Jan 2014 16:19:08 -0300

perf session: Free cpu_map in perf_session__cpu_bitmap

This method uses a temporary struct cpu_map to figure out the cpus
present in the received cpu list in string form, but it failed to free
it after returning. Fix it.

Signed-off-by: Stanislav Fomichev <stfomichev@...dex-team.ru>
Cc: Adrian Hunter <adrian.hunter@...el.com>
Cc: David Ahern <dsahern@...il.com>
Cc: Ingo Molnar <mingo@...hat.com>
Cc: Jiri Olsa <jolsa@...hat.com>
Cc: Namhyung Kim <namhyung@...nel.org>
Cc: Paul Mackerras <paulus@...ba.org>
Cc: Peter Zijlstra <a.p.zijlstra@...llo.nl>
Link: http://lkml.kernel.org/r/1390217980-22424-3-git-send-email-stfomichev@yandex-team.ru
[ Use goto + err = -1 to do the delete just once, in the normal exit path ]
Signed-off-by: Arnaldo Carvalho de Melo <acme@...hat.com>
---
 tools/perf/util/session.c | 10 +++++++---
 1 file changed, 7 insertions(+), 3 deletions(-)

diff --git a/tools/perf/util/session.c b/tools/perf/util/session.c
index 7acc03e..0b39a48 100644
--- a/tools/perf/util/session.c
+++ b/tools/perf/util/session.c
@@ -1573,7 +1573,7 @@ next:
 int perf_session__cpu_bitmap(struct perf_session *session,
 			     const char *cpu_list, unsigned long *cpu_bitmap)
 {
-	int i;
+	int i, err = -1;
 	struct cpu_map *map;
 
 	for (i = 0; i < PERF_TYPE_MAX; ++i) {
@@ -1602,13 +1602,17 @@ int perf_session__cpu_bitmap(struct perf_session *session,
 		if (cpu >= MAX_NR_CPUS) {
 			pr_err("Requested CPU %d too large. "
 			       "Consider raising MAX_NR_CPUS\n", cpu);
-			return -1;
+			goto out_delete_map;
 		}
 
 		set_bit(cpu, cpu_bitmap);
 	}
 
-	return 0;
+	err = 0;
+
+out_delete_map:
+	cpu_map__delete(map);
+	return err;
 }
 
 void perf_session__fprintf_info(struct perf_session *session, FILE *fp,
--
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