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SubjectRe: [RFC PATCH 0/3] Reduce searching in the page allocator fast-path
On Tue, Aug 18, 2009 at 03:05:25PM -0400, Christoph Lameter wrote:
> On Tue, 18 Aug 2009, Mel Gorman wrote:
>
> > Can you point me to which patchset you are talking about specifically that
> > uses per-cpu atomics in the hot path? There are a lot of per-cpu patches
> > related to you that have been posted in the last few months and I'm not sure
> > what any of their merge status' is.
>
> The following patch just moved the page allocator to use the new per cpu
> allocator. It does not use per cpu atomic yet but its possible then.
>
> http://marc.info/?l=linux-mm&m=124527414206546&w=2
>

Ok, I don't see this particular patch merged, is it in a merge queue somewhere?

After glancing through, I can see how it might help. I'm going to drop patch
3 of this set that shuffles data from the PCP to the zone and take a closer
look at those patches. Patch 1 and 2 of this set should still go ahead. Do
you agree?

--
Mel Gorman
Part-time Phd Student Linux Technology Center
University of Limerick IBM Dublin Software Lab


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