linux-kernel - Re: [patch 00/10] [RFC] SLUB patches for more functionality, performance and maintenance

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Message-ID: <Pine.LNX.4.64.0707090845230.13792@schroedinger.engr.sgi.com>
Date:	Mon, 9 Jul 2007 08:45:42 -0700 (PDT)
From:	Christoph Lameter <clameter@....com>
To:	David Miller <davem@...emloft.net>
cc:	linux-kernel@...r.kernel.org, linux-mm@...r.kernel.org,
	suresh.b.siddha@...el.com, corey.d.gough@...el.com,
	penberg@...helsinki.fi, akpm@...ux-foundation.org
Subject: Re: [patch 00/10] [RFC] SLUB patches for more functionality,
 performance and maintenance

On Sat, 7 Jul 2007, David Miller wrote:

> From: Christoph Lameter <clameter@....com>
> Date: Sat, 07 Jul 2007 20:49:52 -0700
> 
> > A cmpxchg is less costly than interrupt enabe/disable
> 
> This is cpu dependant, and in fact not true at all on Niagara
> and several of the cpus in the UltraSPARC family.

Hmmm... So have alternate aloc/free paths depending on the cpu?

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