diff options
| author | Paul Mundt <lethal@linux-sh.org> | 2009-09-08 16:23:08 +0900 |
|---|---|---|
| committer | Paul Mundt <lethal@linux-sh.org> | 2009-09-08 16:23:08 +0900 |
| commit | a2494b9b5fb702becaf8d8e3138f7a1a0d3c537e (patch) | |
| tree | 53e7670594825b2c558a9ca7b993670b259a7374 | |
| parent | 6e4154d4c2dd3d7e61d19ddd2527322ce34c2f5a (diff) | |
sh: Kill off dcache writeback from copy_page().
Now that the cache purging is handled manually by all copy_page()
callers, we can kill off copy_page()'s on writeback. This optimizes the
non-aliasing case.
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
| -rw-r--r-- | arch/sh/lib/copy_page.S | 11 |
1 files changed, 3 insertions, 8 deletions
diff --git a/arch/sh/lib/copy_page.S b/arch/sh/lib/copy_page.S index 43de7e8e4e17..9d7b8bc51866 100644 --- a/arch/sh/lib/copy_page.S +++ b/arch/sh/lib/copy_page.S @@ -30,7 +30,9 @@ ENTRY(copy_page) mov r4,r10 mov r5,r11 mov r5,r8 - mov.l .Lpsz,r0 + mov #(PAGE_SIZE >> 10), r0 + shll8 r0 + shll2 r0 add r0,r8 ! 1: mov.l @r11+,r0 @@ -43,7 +45,6 @@ ENTRY(copy_page) mov.l @r11+,r7 #if defined(CONFIG_CPU_SH4) movca.l r0,@r10 - mov r10,r0 #else mov.l r0,@r10 #endif @@ -55,9 +56,6 @@ ENTRY(copy_page) mov.l r3,@-r10 mov.l r2,@-r10 mov.l r1,@-r10 -#if defined(CONFIG_CPU_SH4) - ocbwb @r0 -#endif cmp/eq r11,r8 bf/s 1b add #28,r10 @@ -68,9 +66,6 @@ ENTRY(copy_page) rts nop - .balign 4 -.Lpsz: .long PAGE_SIZE - /* * __kernel_size_t __copy_user(void *to, const void *from, __kernel_size_t n); * Return the number of bytes NOT copied |