linux-kernel - Re: [MM] Make mm counters per cpu instead of atomic

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Message-ID: <alpine.DEB.1.10.0911051004360.25718@V090114053VZO-1>
Date:	Thu, 5 Nov 2009 10:04:55 -0500 (EST)
From:	Christoph Lameter <cl@...ux-foundation.org>
To:	Dave Jones <davej@...hat.com>
cc:	KAMEZAWA Hiroyuki <kamezawa.hiroyu@...fujitsu.com>,
	"hugh.dickins@...cali.co.uk" <hugh.dickins@...cali.co.uk>,
	linux-mm@...ck.org, linux-kernel@...r.kernel.org,
	akpm@...ux-foundation.org, Tejun Heo <tj@...nel.org>
Subject: Re: [MM] Make mm counters per cpu instead of atomic

On Wed, 4 Nov 2009, Dave Jones wrote:

> On Wed, Nov 04, 2009 at 02:14:41PM -0500, Christoph Lameter wrote:
>
>  > +		memset(m, sizeof(struct mm_counter), 0);
>
> Args wrong way around.

Right. It works because percpu_alloc zeroes the data anyways.

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