linux-kernel - Re: [PATCH 2/4] x86: Extend percpu ops to 64 bit

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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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