Messages in this thread | | | Date | Thu, 24 Mar 2005 10:41:06 -0800 (PST) | From | Christoph Lameter <> | Subject | Re: [PATCH] add a clear_pages function to clear pages of higher order |
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On Thu, 24 Mar 2005, David Mosberger wrote:
> That's definitely the case. See my earlier post on this topic: > > http://www.gelato.unsw.edu.au/linux-ia64/0409/11012.html > > Unfortunately, nobody reported any results for larger machines and/or > more interesting workloads, so the patch is in limbo at this time. > Clearly, if the CPU that's clearing the page is likely to use that > same page soon after, it'd be useful to use temporal stores.
So it would be useful to have
clear_page -> Temporal. Only zaps one page
and
clear_pages -> Zaps arbitrary order of page non-temporal
Rework the clear_pages patch to do just that? Maybe rename clear_pages clear_pages_nt?
prep_zero_page would use a temporal clear for an order 0 page but a nontemporal clear for higher order pages. - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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