bootmem: factor out the marking of a PFN range

[linux-2.6] / include / asm-mips / cacheflush.h

diff --git a/include/asm-mips/cacheflush.h b/include/asm-mips/cacheflush.h
index 47bc8f6c20d2e2795211335e37cbb4e01489e0c2..d5c0f2fda51bb0fc8cace8174d2865a3e0a27c98 100644 (file)
--- a/include/asm-mips/cacheflush.h
+++ b/include/asm-mips/cacheflush.h
@@ -17,11 +17,11 @@
  *
  *  - 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:
  *
@@ -32,6 +32,7 @@
 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);
@@ -39,7 +40,7 @@ extern void __flush_dcache_page(struct page *page);
 
 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);
 
 }
@@ -47,31 +48,46 @@ static inline void flush_dcache_page(struct 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);
+#define ARCH_HAS_FLUSH_ANON_PAGE
+extern void __flush_anon_page(struct page *, unsigned long);
+static inline void flush_anon_page(struct vm_area_struct *vma,
+       struct page *page, unsigned long vmaddr)
+{
+       if (cpu_has_dc_aliases && PageAnon(page))
+               __flush_anon_page(page, vmaddr);
+}
+
+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,
-       struct page *page, unsigned long vaddr, void *dst, const void *src,
-       unsigned long len)
+extern void (*__flush_cache_vmap)(void);
+
+static inline void flush_cache_vmap(unsigned long start, unsigned long end)
 {
        if (cpu_has_dc_aliases)
-               flush_cache_page(vma, vaddr, page_to_pfn(page));
-       memcpy(dst, src, len);
-       flush_icache_page(vma, page);
+               __flush_cache_vmap();
 }
 
-static inline void copy_from_user_page(struct vm_area_struct *vma,
-       struct page *page, unsigned long vaddr, void *dst, const void *src,
-       unsigned long len)
+extern void (*__flush_cache_vunmap)(void);
+
+static inline void flush_cache_vunmap(unsigned long start, unsigned long end)
 {
        if (cpu_has_dc_aliases)
-               flush_cache_page(vma, vaddr, page_to_pfn(page));
-       memcpy(dst, src, len);
+               __flush_cache_vunmap();
 }
 
+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);
+
+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);
+
 extern void (*flush_cache_sigtramp)(unsigned long addr);
 extern void (*flush_icache_all)(void);
 extern void (*local_flush_data_cache_page)(void * addr);
@@ -91,6 +107,9 @@ extern void (*flush_data_cache_page)(unsigned long addr);
        clear_bit(PG_dcache_dirty, &(page)->flags)
 
 /* Run kernel code uncached, useful for cache probing functions. */
-unsigned long __init run_uncached(void *func);
+unsigned long run_uncached(void *func);
+
+extern void *kmap_coherent(struct page *page, unsigned long addr);
+extern void kunmap_coherent(void);
 
 #endif /* _ASM_CACHEFLUSH_H */