linux-kernel - Re: [rfc 00/45] [RFC] CPU ops and a rework of per cpu data handling on x86

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Message-ID: <Pine.LNX.4.64.0711191811290.20625@schroedinger.engr.sgi.com>
Date:	Mon, 19 Nov 2007 18:12:24 -0800 (PST)
From:	Christoph Lameter <clameter@....com>
To:	David Miller <davem@...emloft.net>
cc:	ak@...e.de, akpm@...ux-foundation.org, travis@....com,
	mathieu.desnoyers@...ymtl.ca, linux-kernel@...r.kernel.org
Subject: Re: [rfc 00/45] [RFC] CPU ops and a rework of per cpu data handling
 on x86_64

On Mon, 19 Nov 2007, David Miller wrote:

> From: Christoph Lameter <clameter@....com>
> Date: Mon, 19 Nov 2007 17:59:33 -0800 (PST)
> 
> > In that case the generic fallbacks can just provide what you already
> > have.
> 
> I understand, I was just letting you know why we probably won't
> take advantage of this new stuff :-)

On the other hand: The pointer array removal and the allocation 
density improvements of the cpu_alloc should also help sparc to 
increase the information density in cachelines and thus increase overall 
speed of your 64p box.

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