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Date: Fri, 3 Feb 2006 01:36:18 -0800
From: William Lee Irwin III <wli@holomorphy.com>
Subject: Re: percpu data changes
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On Fri, Feb 03, 2006 at 01:17:48AM -0800, Andrew Morton wrote:
> It seems that powerpc has gone and changed their implementation of percpu
> data so that there is no memory allocated for not-possible CPUs.  To save a
> bit of RAM.
> This means that any code which does
> 
> 	for (i = 0; i < NR_CPUS; i++)
> 		touch(percpudata(i))
> will explode on powerpc.
> I have a patch queued up (for 2.6.16) which fixes most users of percpu
> data.  Make them use for_each_cpu().  I'll send that in a moment.
...

Blanket Acked-by: William Irwin <wli@holomorphy.com>


-- wli