diff options
| author | Ralf Baechle <ralf@linux-mips.org> | 2006-12-12 12:14:57 -0500 |
|---|---|---|
| committer | Linus Torvalds <torvalds@woody.osdl.org> | 2006-12-13 12:27:08 -0500 |
| commit | ec8c0446b6e2b67b5c8813eb517f4bf00efa99a9 (patch) | |
| tree | e7c12d7c486c958a5e38888b41cfcd6a558f1aff /include/asm-powerpc | |
| parent | bcd022801ee514e28c32837f0b3ce18c775f1a7b (diff) | |
[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 <ralf@linux-mips.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'include/asm-powerpc')
| -rw-r--r-- | include/asm-powerpc/cacheflush.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/include/asm-powerpc/cacheflush.h b/include/asm-powerpc/cacheflush.h index 8a740c88d93d..08e93e789219 100644 --- a/include/asm-powerpc/cacheflush.h +++ b/include/asm-powerpc/cacheflush.h | |||
| @@ -18,6 +18,7 @@ | |||
| 18 | */ | 18 | */ |
| 19 | #define flush_cache_all() do { } while (0) | 19 | #define flush_cache_all() do { } while (0) |
| 20 | #define flush_cache_mm(mm) do { } while (0) | 20 | #define flush_cache_mm(mm) do { } while (0) |
| 21 | #define flush_cache_dup_mm(mm) do { } while (0) | ||
| 21 | #define flush_cache_range(vma, start, end) do { } while (0) | 22 | #define flush_cache_range(vma, start, end) do { } while (0) |
| 22 | #define flush_cache_page(vma, vmaddr, pfn) do { } while (0) | 23 | #define flush_cache_page(vma, vmaddr, pfn) do { } while (0) |
| 23 | #define flush_icache_page(vma, page) do { } while (0) | 24 | #define flush_icache_page(vma, page) do { } while (0) |