Messages in this thread | | | Date | Tue, 18 Aug 2009 17:53:41 +0100 | From | Mel Gorman <> | Subject | Re: [RFC PATCH 0/3] Reduce searching in the page allocator fast-path |
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On Tue, Aug 18, 2009 at 10:22:01AM -0400, Christoph Lameter wrote: > > This could be combined with the per cpu ops patch that makes the page > allocator use alloc_percpu for its per cpu data needs. That in turn would > allow the use of per cpu atomics in the hot paths, maybe we can > get to a point where we can drop the irq disable there. >
It would appear that getting rid of IRQ disabling and using per-cpu-atomics would be a problem independent of searching the free lists. Either would be good, both would be better or am I missing something that makes them mutually exclusive?
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.
-- Mel Gorman Part-time Phd Student Linux Technology Center University of Limerick IBM Dublin Software Lab
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