linux-kernel - Re: [patch 7/7] cpu alloc: page allocator conversion

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Message-ID: <Pine.LNX.4.64.0811060904030.3595@quilx.com>
Date:	Thu, 6 Nov 2008 09:04:54 -0600 (CST)
From:	Christoph Lameter <cl@...ux-foundation.org>
To:	KOSAKI Motohiro <kosaki.motohiro@...fujitsu.com>
cc:	akpm@...ux-foundation.org, Pekka Enberg <penberg@...helsinki.fi>,
	Christoph Lameter <clameter@....com>,
	linux-kernel@...r.kernel.org, linux-mm@...ck.org, travis@....com,
	Stephen Rothwell <sfr@...b.auug.org.au>,
	Vegard Nossum <vegard.nossum@...il.com>
Subject: Re: [patch 7/7] cpu alloc: page allocator conversion

On Thu, 6 Nov 2008, KOSAKI Motohiro wrote:

> > -		free_zone_pagesets(cpu);
> > +		process_zones(cpu);
> >  		break;
>
> Why do you drop cpu unplug code?

Because it does not do anything. Percpu areas are traditionally allocated
for each possible cpu not for each online cpu.

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