From ec8c0446b6e2b67b5c8813eb517f4bf00efa99a9 Mon Sep 17 00:00:00 2001 From: Ralf Baechle Date: Tue, 12 Dec 2006 17:14:57 +0000 Subject: [PATCH] Optimize D-cache alias handling on fork Virtually index, physically tagged cache architectures can get away without cache flushing when forking. This patch adds a new cache flushing function flush_cache_dup_mm(struct mm_struct *) which for the moment I've implemented to do the same thing on all architectures except on MIPS where it's a no-op. Signed-off-by: Ralf Baechle Signed-off-by: Linus Torvalds --- include/asm-m68knommu/cacheflush.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/asm-m68knommu') diff --git a/include/asm-m68knommu/cacheflush.h b/include/asm-m68knommu/cacheflush.h index c3aadf3b0d88..163dcb1a9689 100644 --- a/include/asm-m68knommu/cacheflush.h +++ b/include/asm-m68knommu/cacheflush.h @@ -8,6 +8,7 @@ #define flush_cache_all() __flush_cache_all() #define flush_cache_mm(mm) do { } while (0) +#define flush_cache_dup_mm(mm) do { } while (0) #define flush_cache_range(vma, start, end) __flush_cache_all() #define flush_cache_page(vma, vmaddr) do { } while (0) #define flush_dcache_range(start,len) __flush_cache_all() -- cgit v1.2.3-59-g8ed1b