[tip:perf/core] perf hists: Free unused mem info of a matched hist entry

[tip-bot for Namhyung Kim <tipbot@zytor.com>]

Commit-ID:  ceb2acbc2c1387c8785b3c98b482f5a2b89447c3
Gitweb:     http://git.kernel.org/tip/ceb2acbc2c1387c8785b3c98b482f5a2b89447c3
Author:     Namhyung Kim <namhyung.kim@lge.com>
AuthorDate: Mon, 1 Apr 2013 20:35:18 +0900
Committer:  Arnaldo Carvalho de Melo <acme@redhat.com>
CommitDate: Tue, 28 May 2013 16:23:52 +0300

perf hists: Free unused mem info of a matched hist entry

The mem info is shared between matched entries so one should be freed.

Signed-off-by: Namhyung Kim <namhyung@kernel.org>
Cc: Andi Kleen <andi@firstfloor.org>
Cc: David Ahern <dsahern@gmail.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lkml.kernel.org/r/1364816125-12212-3-git-send-email-namhyung@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
---
 tools/perf/util/hist.c | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/tools/perf/util/hist.c b/tools/perf/util/hist.c
index 9438d57..514fc04 100644
--- a/tools/perf/util/hist.c
+++ b/tools/perf/util/hist.c
@@ -374,6 +374,12 @@ static struct hist_entry *add_hist_entry(struct hists *hists,
 		if (!cmp) {
 			he_stat__add_period(&he->stat, period, weight);
 
+			/*
+			 * This mem info was allocated from machine__resolve_mem
+			 * and will not be used anymore.
+			 */
+			free(entry->mem_info);
+
 			/* If the map of an existing hist_entry has
 			 * become out-of-date due to an exec() or
 			 * similar, update it.  Otherwise we will