Re: [PATCH 2/2] scheduler: cgroups cpuaccouting: Make cpuusageatomic

From: Peter Zijlstra
Date: Wed May 19 2010 - 15:02:37 EST

On Wed, 2010-05-19 at 20:58 +0200, Thomas Renninger wrote:
> and avoid locking on 32 bit.
> This resolves an ugly dependency in cgroups_cpuaccount.c
> to per_cpu runqueues lock variable.

While I totally agree with the sentiments here, atomic64_t isn't
available on all 32bit archs and is _terribly_ expensive on ARCH=i386.

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