*
* - flush_cache_all() flushes entire cache
* - flush_cache_mm(mm) flushes the specified mm context's cache lines
+ * - flush_cache_dup mm(mm) handles cache flushing when forking
* - flush_cache_page(mm, vmaddr, pfn) flushes a single page
* - flush_cache_range(vma, start, end) flushes a range of pages
* - flush_icache_range(start, end) flush a range of instructions
* - flush_dcache_page(pg) flushes(wback&invalidates) a page for dcache
- * - flush_icache_page(vma, pg) flushes(invalidates) a page for icache
*
* MIPS specific flush operations:
*
extern void (*flush_cache_all)(void);
extern void (*__flush_cache_all)(void);
extern void (*flush_cache_mm)(struct mm_struct *mm);
+#define flush_cache_dup_mm(mm) do { (void) (mm); } while (0)
extern void (*flush_cache_range)(struct vm_area_struct *vma,
unsigned long start, unsigned long end);
extern void (*flush_cache_page)(struct vm_area_struct *vma, unsigned long page, unsigned long pfn);
static inline void flush_dcache_page(struct page *page)
{
- if (cpu_has_dc_aliases)
+ if (cpu_has_dc_aliases || !cpu_has_ic_fills_f_dc)
__flush_dcache_page(page);
}
#define flush_dcache_mmap_lock(mapping) do { } while (0)
#define flush_dcache_mmap_unlock(mapping) do { } while (0)
-extern void (*flush_icache_page)(struct vm_area_struct *vma,
- struct page *page);
+static inline void flush_icache_page(struct vm_area_struct *vma,
+ struct page *page)
+{
+}
+
extern void (*flush_icache_range)(unsigned long start, unsigned long end);
#define flush_cache_vmap(start, end) flush_cache_all()
#define flush_cache_vunmap(start, end) flush_cache_all()
-static inline void copy_to_user_page(struct vm_area_struct *vma,
+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)
-{
- if (cpu_has_dc_aliases)
- flush_cache_page(vma, vaddr, page_to_pfn(page));
- memcpy(dst, src, len);
- flush_icache_page(vma, page);
-}
+ unsigned long len);
-static inline void copy_from_user_page(struct vm_area_struct *vma,
+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)
-{
- if (cpu_has_dc_aliases)
- flush_cache_page(vma, vaddr, page_to_pfn(page));
- memcpy(dst, src, len);
-}
+ unsigned long len);
extern void (*flush_cache_sigtramp)(unsigned long addr);
extern void (*flush_icache_all)(void);
+extern void (*local_flush_data_cache_page)(void * addr);
extern void (*flush_data_cache_page)(unsigned long addr);
/*