diff options
Diffstat (limited to 'arch/sh/include/asm/page.h')
| -rw-r--r-- | arch/sh/include/asm/page.h | 24 |
1 files changed, 11 insertions, 13 deletions
diff --git a/arch/sh/include/asm/page.h b/arch/sh/include/asm/page.h index 49592c780a6..81bffc0d686 100644 --- a/arch/sh/include/asm/page.h +++ b/arch/sh/include/asm/page.h @@ -50,26 +50,24 @@ extern unsigned long shm_align_mask; extern unsigned long max_low_pfn, min_low_pfn; extern unsigned long memory_start, memory_end; -extern void clear_page(void *to); +static inline unsigned long +pages_do_alias(unsigned long addr1, unsigned long addr2) +{ + return (addr1 ^ addr2) & shm_align_mask; +} + + +#define clear_page(page) memset((void *)(page), 0, PAGE_SIZE) extern void copy_page(void *to, void *from); -#if !defined(CONFIG_CACHE_OFF) && defined(CONFIG_MMU) && \ - (defined(CONFIG_CPU_SH5) || defined(CONFIG_CPU_SH4) || \ - defined(CONFIG_SH7705_CACHE_32KB)) struct page; struct vm_area_struct; -extern void clear_user_page(void *to, unsigned long address, struct page *page); -extern void copy_user_page(void *to, void *from, unsigned long address, - struct page *page); -#if defined(CONFIG_CPU_SH4) + extern void copy_user_highpage(struct page *to, struct page *from, unsigned long vaddr, struct vm_area_struct *vma); #define __HAVE_ARCH_COPY_USER_HIGHPAGE -#endif -#else -#define clear_user_page(page, vaddr, pg) clear_page(page) -#define copy_user_page(to, from, vaddr, pg) copy_page(to, from) -#endif +extern void clear_user_highpage(struct page *page, unsigned long vaddr); +#define clear_user_highpage clear_user_highpage /* * These are used to make use of C type-checking.. |