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

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Message-ID: <alpine.DEB.1.10.0911171223460.20360@V090114053VZO-1>
Date:	Tue, 17 Nov 2009 12:25:37 -0500 (EST)
From:	Christoph Lameter <cl@...ux-foundation.org>
To:	"Zhang, Yanmin" <yanmin_zhang@...ux.intel.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>,
	Andi Kleen <andi@...stfloor.org>
Subject: Re: [MM] Make mm counters per cpu instead of atomic

On Tue, 17 Nov 2009, Zhang, Yanmin wrote:

> The right change above should be:
>  struct mm_counter *m = per_cpu_ptr(mm->rss, cpu);

Right.

> With the change, command 'make oldconfig' and a boot command still
> hangs.

Not sure if its worth spending more time on this but if you want I will
consolidate the fixes so far and put out another patchset.

Where does it hang during boot?

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