1 #ifndef __ASM_CACHEFLUSH_H 2 #define __ASM_CACHEFLUSH_H 3 4 /* Keep includes the same across arches. */ 5 #include <linux/mm.h> 6 7 /* 8 * The cache doesn't need to be flushed when TLB entries change when 9 * the cache is mapped to physical memory, not virtual memory 10 */ 11 #define flush_cache_all() do { } while (0) 12 #define flush_cache_mm(mm) do { } while (0) 13 #define flush_cache_dup_mm(mm) do { } while (0) 14 #define flush_cache_range(vma, start, end) do { } while (0) 15 #define flush_cache_page(vma, vmaddr, pfn) do { } while (0) 16 #define ARCH_IMPLEMENTS_FLUSH_DCACHE_PAGE 0 17 #define flush_dcache_page(page) do { } while (0) 18 #define flush_dcache_mmap_lock(mapping) do { } while (0) 19 #define flush_dcache_mmap_unlock(mapping) do { } while (0) 20 #define flush_icache_range(start, end) do { } while (0) 21 #define flush_icache_page(vma,pg) do { } while (0) 22 #define flush_icache_user_range(vma,pg,adr,len) do { } while (0) 23 #define flush_cache_vmap(start, end) do { } while (0) 24 #define flush_cache_vunmap(start, end) do { } while (0) 25 26 #define copy_to_user_page(vma, page, vaddr, dst, src, len) \ 27 do { \ 28 memcpy(dst, src, len); \ 29 flush_icache_user_range(vma, page, vaddr, len); \ 30 } while (0) 31 #define copy_from_user_page(vma, page, vaddr, dst, src, len) \ 32 memcpy(dst, src, len) 33 34 #endif /* __ASM_CACHEFLUSH_H */ 35