linux-kernel - [PATCH] perf probe: Delete an unnecessary check before the function call "strfilter_

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Message-ID: <5597751A.5000506@users.sourceforge.net>
Date:	Sat, 04 Jul 2015 07:54:34 +0200
From:	SF Markus Elfring <elfring@...rs.sourceforge.net>
To:	Arnaldo Carvalho de Melo <acme@...nel.org>,
	Ingo Molnar <mingo@...hat.com>,
	Masami Hiramatsu <masami.hiramatsu.pt@...achi.com>,
	Peter Zijlstra <a.p.zijlstra@...llo.nl>
CC:	LKML <linux-kernel@...r.kernel.org>,
	kernel-janitors@...r.kernel.org,
	Julia Lawall <julia.lawall@...6.fr>
Subject: [PATCH] perf probe: Delete an unnecessary check before the function
 call "strfilter__delete"

From: Markus Elfring <elfring@...rs.sourceforge.net>
Date: Sat, 4 Jul 2015 07:44:22 +0200

The strfilter__delete() function tests whether its argument is NULL and
then returns immediately. Thus the test around the call is not needed.

This issue was detected by using the Coccinelle software.

Signed-off-by: Markus Elfring <elfring@...rs.sourceforge.net>
---
 tools/perf/builtin-probe.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/tools/perf/builtin-probe.c b/tools/perf/builtin-probe.c
index 1272559..b81cec3 100644
--- a/tools/perf/builtin-probe.c
+++ b/tools/perf/builtin-probe.c
@@ -297,8 +297,7 @@ static void cleanup_params(void)
 		clear_perf_probe_event(params.events + i);
 	line_range__clear(&params.line_range);
 	free(params.target);
-	if (params.filter)
-		strfilter__delete(params.filter);
+	strfilter__delete(params.filter);
 	memset(&params, 0, sizeof(params));
 }
 
-- 
2.4.5

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