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SubjectRe: upcoming percpu changes

On 02/05/2010 02:16 PM, Stephen Rothwell wrote:
> The percpu tree currently in linux-next
> (git://
> contains a patch to remove the "per_cpu_" prefix from percpu variables
> followed by a set of patches to annotate all the percpu variables (and
> accessing variables) with a __percpu tag to put them into a separate
> sparse name space. These latter patches are causing some merge conflicts
> with a couple of trees (and will most likely cause more before the merge
> window). A solution to this is for you to accept the patch below into
> your tree now and then the annotating patches can be sent to the
> respective maintainers directly.
> Of course, this assumes that you will accept the percpu changes during
> the next merge window (and they are not completely without controversy)
> and the proponents actually submit them :-).
> What do you think?
> From: Stephen Rothwell <>
> Date: Fri, 5 Feb 2010 16:09:11 +1100
> Subject: [PATCH] percpu: add __percpu for sparse
> This is to make the annotation of percpu variables during the next merge
> window less painfull.
> Extracted from a patch by Rusty Russell.
> Signed-off-by: Stephen Rothwell <>

I agree that this would be the cleanest way to integrate things.
Thanks for doing this. If this gets in, I'll send individual patches
to respective maintainers.

Acked-by: Tejun Heo <>

For reference, the thread which contains the annoation patches is



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