[PATCH v2 1/3] perf map: use zalloc for map_groups

From: John Keeping <john@metanate.com>
To: Jiri Olsa <jolsa@redhat.com>
Cc: Konstantin Khlebnikov <khlebnikov@yandex-team.ru>,
	Peter Zijlstra <peterz@infradead.org>,
	Ingo Molnar <mingo@redhat.com>,
	Arnaldo Carvalho de Melo <acme@kernel.org>,
	Alexander Shishkin <alexander.shishkin@linux.intel.com>,
	Namhyung Kim <namhyung@kernel.org>,
	linux-kernel@vger.kernel.org, John Keeping <john@metanate.com>
Subject: [PATCH v2 1/3] perf map: use zalloc for map_groups
Date: Thu, 15 Aug 2019 11:01:44 +0100	[thread overview]
Message-ID: <20190815100146.28842-1-john@metanate.com> (raw)
In-Reply-To: <20190804124434.204da4ac.john@metanate.com>

In the next commit we will add new fields to map_groups and we need
these to be null if no value is assigned.  The simplest way to achieve
this is to request zeroed memory from the allocator.

Signed-off-by: John Keeping <john@metanate.com>
---
Unchanged in v2
---
 tools/perf/util/map.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/tools/perf/util/map.c b/tools/perf/util/map.c
index 668410b1d426..44b556812e4b 100644
--- a/tools/perf/util/map.c
+++ b/tools/perf/util/map.c
@@ -636,7 +636,7 @@ bool map_groups__empty(struct map_groups *mg)
 
 struct map_groups *map_groups__new(struct machine *machine)
 {
-	struct map_groups *mg = malloc(sizeof(*mg));
+	struct map_groups *mg = zalloc(sizeof(*mg));
 
 	if (mg != NULL)
 		map_groups__init(mg, machine);
-- 
2.22.0

