linux-kernel - [PATCH] Perf, AMD: Prefer kzalloc() over kmalloc()+memset() in amd_alloc

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Message-ID: <alpine.LNX.2.00.1010302101240.1572@swampdragon.chaosbits.net>
Date:	Sat, 30 Oct 2010 21:06:13 +0200 (CEST)
From:	Jesper Juhl <jj@...osbits.net>
To:	linux-kernel@...r.kernel.org
cc:	Peter Zijlstra <a.p.zijlstra@...llo.nl>,
	Paul Mackerras <paulus@...ba.org>, Ingo Molnar <mingo@...e.hu>,
	Arnaldo Carvalho de Melo <acme@...hat.com>,
	Thomas Gleixner <tglx@...utronix.de>,
	"H. Peter Anvin" <hpa@...or.com>
Subject: [PATCH] Perf, AMD: Prefer kzalloc() over kmalloc()+memset() in
 amd_alloc_nb()


Hi,

I believe this would be an improvement?

Prefer kzalloc() over kmalloc()+memset() in amd_alloc_nb().


Signed-off-by: Jesper Juhl <jj@...osbits.net>
---
 perf_event_amd.c |    3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/arch/x86/kernel/cpu/perf_event_amd.c b/arch/x86/kernel/cpu/perf_event_amd.c
index 46d5844..a3787b2 100644
--- a/arch/x86/kernel/cpu/perf_event_amd.c
+++ b/arch/x86/kernel/cpu/perf_event_amd.c
@@ -280,11 +280,10 @@ static struct amd_nb *amd_alloc_nb(int cpu, int nb_id)
 	struct amd_nb *nb;
 	int i;
 
-	nb = kmalloc(sizeof(struct amd_nb), GFP_KERNEL);
+	nb = kzalloc(sizeof(struct amd_nb), GFP_KERNEL);
 	if (!nb)
 		return NULL;
 
-	memset(nb, 0, sizeof(*nb));
 	nb->nb_id = nb_id;
 
 	/*


-- 
Jesper Juhl <jj@...osbits.net>             http://www.chaosbits.net/
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