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Message-ID: <alpine.DEB.1.10.0911061446480.28386@V090114053VZO-1>
Date: Fri, 6 Nov 2009 14:47:52 -0500 (EST)
From: Christoph Lameter <cl@...ux-foundation.org>
To: KAMEZAWA Hiroyuki <kamezawa.hiroyu@...fujitsu.com>
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 Sat, 7 Nov 2009, KAMEZAWA Hiroyuki wrote:
> > If we just have one thread: Do we need atomic access at all?
> >
> Unfortunately, kswapd/vmscan touch this.
Right. And those can also occur from another processor that the process
never has run on before. Argh.
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