diff options
| author |   Paul Mundt <lethal@linux-sh.org> | 2007-11-05 16:18:16 +0900 |
|---|---|---|
| committer | Paul Mundt <lethal@linux-sh.org> | 2007-11-07 11:14:12 +0900 |
| commit | ba1789efea81acc6633f427bfeb871fd608965b5 (patch) | |
| tree | a93f739cc4d36ebf762ce38a8f90b2ffceecb0b9 /include | |
| parent | sh: Wire up clear_user_highpage(). (diff) | |
| download | linux-dev-ba1789efea81acc6633f427bfeb871fd608965b5.tar.xz linux-dev-ba1789efea81acc6633f427bfeb871fd608965b5.zip | |
sh: Optimized copy_{to,from}_user_page() for SH-4.
This moves copy_{to,from}_user_page() out-of-line on SH-4 and
converts for the kmap_coherent() API. Based on the MIPS
implementation.
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
Diffstat (limited to 'include')
| -rw-r--r-- | include/asm-sh/cacheflush.h | 18 |
1 files changed, 14 insertions, 4 deletions
diff --git a/include/asm-sh/cacheflush.h b/include/asm-sh/cacheflush.h index aa558da08471..b91246153b7e 100644 --- a/include/asm-sh/cacheflush.h +++ b/include/asm-sh/cacheflush.h @@ -43,21 +43,31 @@ extern void __flush_purge_region(void *start, int size); extern void __flush_invalidate_region(void *start, int size); #endif -#define flush_cache_vmap(start, end) flush_cache_all() -#define flush_cache_vunmap(start, end) flush_cache_all() +#ifdef CONFIG_CPU_SH4 +extern void copy_to_user_page(struct vm_area_struct *vma, + struct page *page, unsigned long vaddr, void *dst, const void *src, + unsigned long len); -#define copy_to_user_page(vma, page, vaddr, dst, src, len) \ +extern void copy_from_user_page(struct vm_area_struct *vma, + struct page *page, unsigned long vaddr, void *dst, const void *src, + unsigned long len); +#else +#define copy_to_user_page(vma, page, vaddr, dst, src, len) \ do { \ flush_cache_page(vma, vaddr, page_to_pfn(page));\ memcpy(dst, src, len); \ flush_icache_user_range(vma, page, vaddr, len); \ } while (0) -#define copy_from_user_page(vma, page, vaddr, dst, src, len) \ +#define copy_from_user_page(vma, page, vaddr, dst, src, len) \ do { \ flush_cache_page(vma, vaddr, page_to_pfn(page));\ memcpy(dst, src, len); \ } while (0) +#endif + +#define flush_cache_vmap(start, end) flush_cache_all() +#define flush_cache_vunmap(start, end) flush_cache_all() #define HAVE_ARCH_UNMAPPED_AREA |