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Message-Id: <1247762075.12808.2.camel@localhost> Date: Thu, 16 Jul 2009 18:34:35 +0200 From: Jerome Glisse <glisse@...edesktop.org> To: Jerome Glisse <jglisse@...hat.com> Cc: airlied@...il.com, dri-devel@...ts.sf.net, linux-kernel@...r.kernel.org, Dave Airlie <airlied@...hat.com> Subject: Re: [PATCH] ttm: add pool wc/uc page allocator On Thu, 2009-07-16 at 18:13 +0200, Jerome Glisse wrote: > On AGP system we might allocate/free routinely uncached or wc memory, > changing page from cached (wb) to uc or wc is very expensive and involves > a lot of flushing. To improve performance this allocator use a pool > of uc,wc pages. > > Currently each pool (wc, uc) is 256 pages big, improvement would be > to tweak this according to memory pressure so we can give back memory > to system. > > Signed-off-by: Dave Airlie <airlied@...hat.com> > Signed-off-by: Jerome Glisse <jglisse@...hat.com> Just a follow-up on that one, i haven't been able yet to thoroughly test this patch on AGP system, so i am mostly sending so other people can test. I think i corrected few bugs that were in previous iteration of that patch. Beside that i think i have addressed all comment previously raisen, but don't hesitate to pin point any things i have miss. Cheers, Jerome -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.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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