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| author | Shaohua Li | 2008-08-21 04:46:06 +0200 |
|---|---|---|
| committer | Ingo Molnar | 2008-08-21 13:47:45 +0200 |
| commit | d75586ad01e6c5a30e7337fb87d61e03556a1ecb (patch) | |
| tree | 71fa07acb4b408e51a72b2c0630c2a620196caf4 /include | |
| parent | Revert "introduce two APIs for page attribute" (diff) | |
| download | kernel-qcow2-linux-d75586ad01e6c5a30e7337fb87d61e03556a1ecb.tar.gz kernel-qcow2-linux-d75586ad01e6c5a30e7337fb87d61e03556a1ecb.tar.xz kernel-qcow2-linux-d75586ad01e6c5a30e7337fb87d61e03556a1ecb.zip | |
x86, pageattr: introduce APIs to change pageattr of a page array
Add array interface APIs of pageattr. page based cache flush is quite
slow for a lot of pages. If pages are more than 1024 (4M), the patch
will use a wbinvd(). We have a simple test here (run a 3d game - open
arena), nearly all agp memory allocation are small (< 1M), so suppose
this will not impact runtime performance.
Signed-off-by: Dave Airlie <airlied@gmail.com>
Signed-off-by: Shaohua Li <shaohua.li@intel.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'include')
| -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..0a5f71817b3e 100644 --- a/include/asm-x86/cacheflush.h +++ b/include/asm-x86/cacheflush.h @@ -66,6 +66,9 @@ int set_memory_rw(unsigned long addr, int numpages); int set_memory_np(unsigned long addr, int numpages); int set_memory_4k(unsigned long addr, int numpages); +int set_memory_array_uc(unsigned long *addr, int addrinarray); +int set_memory_array_wb(unsigned long *addr, int addrinarray); + /* * For legacy compatibility with the old APIs, a few functions * are provided that work on a "struct page". |