linux-kernel - Re: [patch 3/4] cpu alloc: The allocator

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Message-ID: <48EB63D5.8090202@linux-foundation.org>
Date:	Tue, 07 Oct 2008 08:27:49 -0500
From:	Christoph Lameter <cl@...ux-foundation.org>
To:	Rusty Russell <rusty@...tcorp.com.au>
CC:	Andrew Morton <akpm@...ux-foundation.org>,
	linux-kernel@...r.kernel.org, linux-mm@...ck.org, jeremy@...p.org,
	ebiederm@...ssion.com, travis@....com, herbert@...dor.apana.org.au,
	xemul@...nvz.org, penberg@...helsinki.fi
Subject: Re: [patch 3/4] cpu alloc: The allocator

Rusty Russell wrote:

> It shouldn't be a big win, since possible ~= online for most systems.  And 
> having all the per-cpu users register online and offline cpu callbacks is 
> error prone and a PITA.

That also has the nice consequence that moving the allocators (page allocator
/ slub) to the use of cpu_alloc will avoid the online and offline callbacks
(the main focus of these is getting rid of large pointer arrays there and
simplifying bootstrap etc).



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