linux-kernel - Re: [cpuops cmpxchg double V2 1/4] Generic support for this_cpu_cmpxchg

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Message-ID: <alpine.DEB.2.00.1102251025250.4996@router.home>
Date:	Fri, 25 Feb 2011 10:26:43 -0600 (CST)
From:	Christoph Lameter <cl@...ux.com>
To:	Tejun Heo <tj@...nel.org>
cc:	Pekka Enberg <penberg@...helsinki.fi>,
	"H. Peter Anvin" <hpa@...or.com>,
	Mathieu Desnoyers <mathieu.desnoyers@...icios.com>,
	akpm@...ux-foundation.org, linux-kernel@...r.kernel.org,
	Eric Dumazet <eric.dumazet@...il.com>
Subject: Re: [cpuops cmpxchg double V2 1/4] Generic support for
 this_cpu_cmpxchg_double

On Fri, 25 Feb 2011, Tejun Heo wrote:

> > Ping? The current situation is that we're unable to merge a
> > perfectly good SLUB performance optimization because we can't seem
> > to agree on the this_cpu_cmpxchg_double() API.
>
> I thought cl was preparing new version of the patchset.  Christoph?

In order to do that I would have to see a way to improve the
patches. None of the suggestions so far seem to be realizable.


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