From: Shaohua Li <shaohua.li@intel.com>
Date: Mon, 4 Aug 2008 06:51:30 +0000 (+0800)
Subject: reduce tlb/cache flush times of agpgart memory allocation
X-Git-Tag: v2.6.28-rc1~713^2~27
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=466ae837424dcc538b1af2a0eaf53be32edcdbe7;p=pandora-kernel.git

reduce tlb/cache flush times of agpgart memory allocation

To reduce tlb/cache flush, makes agp memory allocation do one flush
after all pages in a region are changed to uc.

All agp drivers except agp-sgi uses agp_generic_alloc_page()
for .agp_alloc_page, so the patch should work for them. agp-sgi is only
for ia64, so not a problem too.

Signed-off-by: Shaohua Li <shaohua.li@intel.com>
Cc: airlied@linux.ie
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Arjan van de Ven <arjan@infradead.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
---

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