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Message-Id: <20091106130853.f9e29574.kamezawa.hiroyu@jp.fujitsu.com>
Date:	Fri, 6 Nov 2009 13:08:53 +0900
From:	KAMEZAWA Hiroyuki <kamezawa.hiroyu@...fujitsu.com>
To:	Christoph Lameter <cl@...ux-foundation.org>
Cc:	Dave Jones <davej@...hat.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 V2

On Thu, 5 Nov 2009 10:36:06 -0500 (EST)
Christoph Lameter <cl@...ux-foundation.org> wrote:
> +static inline unsigned long get_mm_rss(struct mm_struct *mm)
> +{
> +	int cpu;
> +	unsigned long r = 0;
> +
> +	for_each_possible_cpu(cpu) {
> +		struct mm_counter *c = per_cpu_ptr(mm->rss, cpu);
> +
> +		r = c->file + c->anon;

r += c->file + c->anon;

Thanks,
-Kame

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