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-arm/cacheflush.h | 2 ++ 1 file changed, 2 insertions(+) (limited to 'include/asm-arm/cacheflush.h') diff --git a/include/asm-arm/cacheflush.h b/include/asm-arm/cacheflush.h index f0845646aac..378a3a2ce8d 100644 --- a/include/asm-arm/cacheflush.h +++ b/include/asm-arm/cacheflush.h @@ -319,6 +319,8 @@ extern void flush_ptrace_access(struct vm_area_struct *vma, struct page *page, unsigned long len, int write); #endif +#define flush_cache_dup_mm(mm) flush_cache_mm(mm) + /* * flush_cache_user_range is used when we want to ensure that the * Harvard caches are synchronised for the user space address range. -- cgit v1.2.3