reduce tlb/cache flush times of agpgart memory allocation

Browse source

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>

...

This commit is contained in:

Shaohua Li 2008-08-04 14:51:30 +08:00 • committed by Ingo Molnar

parent 1ac2f7d55b

commit 466ae83742

3 changed files with 10 additions and 1 deletions

Show all changes Ignore whitespace when comparing lines Ignore changes in amount of whitespace Ignore changes in whitespace at EOL

Download patch file Download diff file Expand all files Collapse all files

4

drivers/char/agp/agp.h

View file

4

drivers/char/agp/generic.c

View file

3

include/asm-x86/agp.h

View file