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| author | Shaohua Li <shaohua.li@intel.com> | 2008-08-04 14:51:30 +0800 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2008-08-15 16:30:48 +0200 |
| commit | 466ae837424dcc538b1af2a0eaf53be32edcdbe7 (patch) | |
| tree | fb19282470b844aa6e1affc52b65dd707196d223 /include/asm-x86 | |
| parent | 1ac2f7d55b7ee1613c90631e87fea22ec06781e5 (diff) | |
| download | talos-obmc-linux-466ae837424dcc538b1af2a0eaf53be32edcdbe7.tar.gz talos-obmc-linux-466ae837424dcc538b1af2a0eaf53be32edcdbe7.zip | |
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>
Diffstat (limited to 'include/asm-x86')
| -rw-r--r-- | include/asm-x86/agp.h | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/include/asm-x86/agp.h b/include/asm-x86/agp.h index e4004a9f6a9a..181b9e984b3a 100644 --- a/include/asm-x86/agp.h +++ b/include/asm-x86/agp.h @@ -15,6 +15,9 @@ #define map_page_into_agp(page) set_pages_uc(page, 1) #define unmap_page_from_agp(page) set_pages_wb(page, 1) +#define map_page_into_agp_noflush(page) set_pages_uc_noflush(page, 1) +#define map_page_into_agp_global_flush() set_memory_flush_all() + /* * Could use CLFLUSH here if the cpu supports it. But then it would * need to be called for each cacheline of the whole page so it may |
