Messages in this thread | | | From | David Mosberger <> | Date | Wed, 7 Jul 2004 11:30:01 -0700 | Subject | Re: [PATCH] - Reduce TLB flushing during process migration |
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>>>>> On Wed, 7 Jul 2004 10:48:00 -0500, Jack Steiner <steiner@sgi.com> said:
Jack> As far as the tlb_migrate patch is concerned, the change to Jack> the way machvec noop functions are implemented is mostly Jack> unrelated to the tlb_migrate patch. We can apply the patches Jack> in 2 ways:
Jack> - change machvec noop functions Jack> - rework the tlb_migrate patch on top of that change
Jack> OR
Jack> - apply the tlb_migrate patch in it's current form Jack> - change the machvec noop functions including the tlb_migrate noop
Jack> Either works. I'm partial to #2 (easier) but will do either....
I'd be ok with #2 except that if we do it that way, I bet that we'll forget about changing the machvec noop functions... ;-)
Jack> Note: calling a noop function after an explicit process Jack> migration is untidy but is not a measurable performance Jack> problem. I agree, however, that the noop function should be Jack> improved. At some point in the future, other noop functions Jack> may be added that ARE performance sensitive. It is good to Jack> have the correct infrastructure implemented.
Precisely.
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