linux-kernel - Re: [patch 13/28] Add cmpxchg_local, cmpxchg64 and cmpxchg64

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Message-ID: <Pine.LNX.4.64.0708271231390.4667@schroedinger.engr.sgi.com>
Date:	Mon, 27 Aug 2007 12:32:48 -0700 (PDT)
From:	Christoph Lameter <clameter@....com>
To:	Mathieu Desnoyers <mathieu.desnoyers@...ymtl.ca>
cc:	akpm@...ux-foundation.org, linux-kernel@...r.kernel.org,
	tony.luck@...el.com, Keith Owens <kaos@....com.au>
Subject: Re: [patch 13/28] Add cmpxchg_local, cmpxchg64 and cmpxchg64_local
 to ia64

On Mon, 27 Aug 2007, Mathieu Desnoyers wrote:

> Add the primitives cmpxchg_local, cmpxchg64 and cmpxchg64_local to ia64. They
> use cmpxchg_acq as underlying macro, just like the already existing ia64
> cmpxchg().

Acked-by: Christoph Lameter <clameter@....com>

Note cmpxchg is *not* a performance win vs interrupt disable / enable on IA64.

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