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Message-ID: <20080610100411.GJ27706@elte.hu>
Date: Tue, 10 Jun 2008 12:04:11 +0200
From: Ingo Molnar <mingo@...e.hu>
To: Mike Travis <travis@....com>
Cc: Andrew Morton <akpm@...ux-foundation.org>,
Christoph Lameter <clameter@....com>,
David Miller <davem@...emloft.net>,
Eric Dumazet <dada1@...mosbay.com>,
Jeremy Fitzhardinge <jeremy@...p.org>,
linux-kernel@...r.kernel.org
Subject: Re: [PATCH 2/4] x86: Extend percpu ops to 64 bit
* Mike Travis <travis@....com> wrote:
> * x86 percpu ops now will work on 64 bit too, so add the missing 8 byte cases.
>
> * Add a few atomic ops that will be useful in the future:
>
> x86_xchg_percpu()
> x86_cmpxchg_percpu().
>
> x86_inc_percpu() - Increment by one can generate more efficient
> x86_dec_percpu() instructions and inc/dec will be supported by
> cpu ops later.
>
> * Use per_cpu_var() instead of per_cpu__##xxx.
>
> Based on linux-2.6.tip
applied to tip/cpus4096, thanks Mike.
Ingo
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