fs: use kmem_cache_zalloc instead
[pv_ops_mirror.git] / include / asm-sh / cacheflush.h
blobaa558da084715874d5169f5b3a58863db83849ee
1 #ifndef __ASM_SH_CACHEFLUSH_H
2 #define __ASM_SH_CACHEFLUSH_H
4 #ifdef __KERNEL__
6 #ifdef CONFIG_CACHE_OFF
7 /*
8 * Nothing to do when the cache is disabled, initial flush and explicit
9 * disabling is handled at CPU init time.
11 * See arch/sh/kernel/cpu/init.c:cache_init().
13 #define p3_cache_init() do { } while (0)
14 #define flush_cache_all() do { } while (0)
15 #define flush_cache_mm(mm) do { } while (0)
16 #define flush_cache_dup_mm(mm) do { } while (0)
17 #define flush_cache_range(vma, start, end) do { } while (0)
18 #define flush_cache_page(vma, vmaddr, pfn) do { } while (0)
19 #define flush_dcache_page(page) 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_dcache_mmap_lock(mapping) do { } while (0)
23 #define flush_dcache_mmap_unlock(mapping) do { } while (0)
24 #define flush_cache_sigtramp(vaddr) do { } while (0)
25 #define flush_icache_user_range(vma,pg,adr,len) do { } while (0)
26 #define __flush_wback_region(start, size) do { (void)(start); } while (0)
27 #define __flush_purge_region(start, size) do { (void)(start); } while (0)
28 #define __flush_invalidate_region(start, size) do { (void)(start); } while (0)
29 #else
30 #include <asm/cpu/cacheflush.h>
33 * Consistent DMA requires that the __flush_xxx() primitives must be set
34 * for any of the enabled non-coherent caches (most of the UP CPUs),
35 * regardless of PIPT or VIPT cache configurations.
38 /* Flush (write-back only) a region (smaller than a page) */
39 extern void __flush_wback_region(void *start, int size);
40 /* Flush (write-back & invalidate) a region (smaller than a page) */
41 extern void __flush_purge_region(void *start, int size);
42 /* Flush (invalidate only) a region (smaller than a page) */
43 extern void __flush_invalidate_region(void *start, int size);
44 #endif
46 #define flush_cache_vmap(start, end) flush_cache_all()
47 #define flush_cache_vunmap(start, end) flush_cache_all()
49 #define copy_to_user_page(vma, page, vaddr, dst, src, len) \
50 do { \
51 flush_cache_page(vma, vaddr, page_to_pfn(page));\
52 memcpy(dst, src, len); \
53 flush_icache_user_range(vma, page, vaddr, len); \
54 } while (0)
56 #define copy_from_user_page(vma, page, vaddr, dst, src, len) \
57 do { \
58 flush_cache_page(vma, vaddr, page_to_pfn(page));\
59 memcpy(dst, src, len); \
60 } while (0)
62 #define HAVE_ARCH_UNMAPPED_AREA
64 #endif /* __KERNEL__ */
65 #endif /* __ASM_SH_CACHEFLUSH_H */