csky: Optimize abiv2 copy_to_user_page with VM_EXEC

[linux.git] / arch / csky / abiv2 / inc / abi / cacheflush.h

diff --git a/arch/csky/abiv2/inc/abi/cacheflush.h b/arch/csky/abiv2/inc/abi/cacheflush.h
index b8db5e0b2fe3c6448907398cba030c7d9abb9223..28b7c32331757e0352d1b4681ef8ef0e802538d2 100644 (file)
--- a/arch/csky/abiv2/inc/abi/cacheflush.h
+++ b/arch/csky/abiv2/inc/abi/cacheflush.h
@@ -13,32 +13,33 @@
 #define flush_cache_all()                      do { } while (0)
 #define flush_cache_mm(mm)                     do { } while (0)
 #define flush_cache_dup_mm(mm)                 do { } while (0)
+#define flush_cache_range(vma, start, end)     do { } while (0)
+#define flush_cache_page(vma, vmaddr, pfn)     do { } while (0)
 
-#define flush_cache_range(vma, start, end) \
-       do { \
-               if (vma->vm_flags & VM_EXEC) \
-                       icache_inv_all(); \
-       } while (0)
+#define PG_dcache_clean                PG_arch_1
+
+#define ARCH_IMPLEMENTS_FLUSH_DCACHE_PAGE 1
+static inline void flush_dcache_page(struct page *page)
+{
+       if (test_bit(PG_dcache_clean, &page->flags))
+               clear_bit(PG_dcache_clean, &page->flags);
+}
 
-#define flush_cache_page(vma, vmaddr, pfn)     do { } while (0)
-#define ARCH_IMPLEMENTS_FLUSH_DCACHE_PAGE 0
-#define flush_dcache_page(page)                        do { } while (0)
 #define flush_dcache_mmap_lock(mapping)                do { } while (0)
 #define flush_dcache_mmap_unlock(mapping)      do { } while (0)
+#define flush_icache_page(vma, page)           do { } while (0)
 
 #define flush_icache_range(start, end)         cache_wbinv_range(start, end)
 
-void flush_icache_page(struct vm_area_struct *vma, struct page *page);
-void flush_icache_user_range(struct vm_area_struct *vma, struct page *page,
-                            unsigned long vaddr, int len);
-
 #define flush_cache_vmap(start, end)           do { } while (0)
 #define flush_cache_vunmap(start, end)         do { } while (0)
 
 #define copy_to_user_page(vma, page, vaddr, dst, src, len) \
 do { \
        memcpy(dst, src, len); \
-       cache_wbinv_range((unsigned long)dst, (unsigned long)dst + len); \
+       if (vma->vm_flags & VM_EXEC) \
+               cache_wbinv_range((unsigned long)dst, \
+                                 (unsigned long)dst + len); \
 } while (0)
 #define copy_from_user_page(vma, page, vaddr, dst, src, len) \
        memcpy(dst, src, len)