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-sparc64/cacheflush.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/asm-sparc64/cacheflush.h') diff --git a/include/asm-sparc64/cacheflush.h b/include/asm-sparc64/cacheflush.h index 745d1ab6037..122e4058dd9 100644 --- a/include/asm-sparc64/cacheflush.h +++ b/include/asm-sparc64/cacheflush.h @@ -12,6 +12,7 @@ /* These are the same regardless of whether this is an SMP kernel or not. */ #define flush_cache_mm(__mm) \ do { if ((__mm) == current->mm) flushw_user(); } while(0) +#define flush_cache_dup_mm(mm) flush_cache_mm(mm) #define flush_cache_range(vma, start, end) \ flush_cache_mm((vma)->vm_mm) #define flush_cache_page(vma, page, pfn) \ -- cgit v1.2.3