linux-kernel - [PATCH 13/32] perf tools: Use zfree() instead of ad hoc equivalent

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Message-Id: <20170210013940.9998-14-acme@kernel.org>
Date:   Thu,  9 Feb 2017 22:39:21 -0300
From:   Arnaldo Carvalho de Melo <acme@...nel.org>
To:     Ingo Molnar <mingo@...nel.org>
Cc:     linux-kernel@...r.kernel.org,
        Taeung Song <treeze.taeung@...il.com>,
        Jiri Olsa <jolsa@...nel.org>,
        Namhyung Kim <namhyung@...nel.org>,
        Peter Zijlstra <peterz@...radead.org>,
        Wang Nan <wangnan0@...wei.com>,
        Arnaldo Carvalho de Melo <acme@...hat.com>
Subject: [PATCH 13/32] perf tools: Use zfree() instead of ad hoc equivalent

From: Taeung Song <treeze.taeung@...il.com>

We have zfree(&ptr) for this very common pattern:

   free(ptr);
   ptr = NULL;

So use it in a few more places.

Signed-off-by: Taeung Song <treeze.taeung@...il.com>
Cc: Jiri Olsa <jolsa@...nel.org>
Cc: Namhyung Kim <namhyung@...nel.org>
Cc: Peter Zijlstra <peterz@...radead.org>
Cc: Wang Nan <wangnan0@...wei.com>
Link: http://lkml.kernel.org/r/1485952447-7013-4-git-send-email-treeze.taeung@gmail.com
[ rewrote commit log ]
Signed-off-by: Arnaldo Carvalho de Melo <acme@...hat.com>

Signed-off-by: Arnaldo Carvalho de Melo <acme@...hat.com>
---
 tools/perf/util/parse-events.c | 6 ++----
 1 file changed, 2 insertions(+), 4 deletions(-)

diff --git a/tools/perf/util/parse-events.c b/tools/perf/util/parse-events.c
index 1f1f77d8d3ab..ab1ba22d879a 100644
--- a/tools/perf/util/parse-events.c
+++ b/tools/perf/util/parse-events.c
@@ -254,8 +254,7 @@ struct tracepoint_path *tracepoint_name_to_path(const char *name)
 	if (path->system == NULL || path->name == NULL) {
 		zfree(&path->system);
 		zfree(&path->name);
-		free(path);
-		path = NULL;
+		zfree(&path);
 	}
 
 	return path;
@@ -1482,8 +1481,7 @@ static void perf_pmu__parse_cleanup(void)
 			p = perf_pmu_events_list + i;
 			free(p->symbol);
 		}
-		free(perf_pmu_events_list);
-		perf_pmu_events_list = NULL;
+		zfree(&perf_pmu_events_list);
 		perf_pmu_events_list_num = 0;
 	}
 }
-- 
2.9.3