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| author |   Shaohua Li <shaohua.li@intel.com> | 2008-08-04 14:51:24 +0800 |
|---|---|---|
| committer |   Ingo Molnar <mingo@elte.hu> | 2008-08-15 16:30:45 +0200 |
| commit | 1ac2f7d55b7ee1613c90631e87fea22ec06781e5 (patch) | |
| tree | 1f93aaed49cf60982b11fbf38fc6e331643a5c08 /include/asm-x86/cacheflush.h | |
| parent | x86: compile pat debugfs interface only if CONFIG_X86_PAT is set (diff) | |
| download | linux-dev-1ac2f7d55b7ee1613c90631e87fea22ec06781e5.tar.xz linux-dev-1ac2f7d55b7ee1613c90631e87fea22ec06781e5.zip | |
introduce two APIs for page attribute
Introduce two APIs for page attribute. flushing tlb/cache in every page
attribute is expensive. AGP gart usually will do a lot of operations to
change a page to uc, new APIs can reduce flush.
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/cacheflush.h')
| -rw-r--r-- | include/asm-x86/cacheflush.h | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/include/asm-x86/cacheflush.h b/include/asm-x86/cacheflush.h index f4c0ab50d2c2..57bac7b68c46 100644 --- a/include/asm-x86/cacheflush.h +++ b/include/asm-x86/cacheflush.h @@ -57,6 +57,8 @@ int _set_memory_uc(unsigned long addr, int numpages); int _set_memory_wc(unsigned long addr, int numpages); int _set_memory_wb(unsigned long addr, int numpages); int set_memory_uc(unsigned long addr, int numpages); +int set_memory_uc_noflush(unsigned long addr, int numpages); +void set_memory_flush_all(void); int set_memory_wc(unsigned long addr, int numpages); int set_memory_wb(unsigned long addr, int numpages); int set_memory_x(unsigned long addr, int numpages); @@ -87,6 +89,7 @@ int set_memory_4k(unsigned long addr, int numpages); */ int set_pages_uc(struct page *page, int numpages); +int set_pages_uc_noflush(struct page *page, int numpages); int set_pages_wb(struct page *page, int numpages); int set_pages_x(struct page *page, int numpages); int set_pages_nx(struct page *page, int numpages); |