diff options
| author | FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp> | 2010-05-19 23:21:38 -0400 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@suse.de> | 2010-07-05 11:10:50 -0700 |
| commit | e4ea66658a37ca7f3142feecbaf3d2fd8a50cc50 (patch) | |
| tree | 0e12984eefe586fbf6c89f272e305b6cef5a64bf | |
| parent | 12108de038106d839ad1c60853b8cdc4818c5f53 (diff) | |
Blackfin: set ARCH_KMALLOC_MINALIGN
commit 76b99699a2bbf9efdb578f9a38a202af2ecb354b upstream.
Architectures that handle DMA-non-coherent memory need to set
ARCH_KMALLOC_MINALIGN to make sure that kmalloc'ed buffer is DMA-safe:
the buffer doesn't share a cache with the others.
Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
Acked-by: Pekka Enberg <penberg@cs.helsinki.fi>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
| -rw-r--r-- | arch/blackfin/include/asm/cache.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/arch/blackfin/include/asm/cache.h b/arch/blackfin/include/asm/cache.h index 8542bc31f63..93f6c634fdf 100644 --- a/arch/blackfin/include/asm/cache.h +++ b/arch/blackfin/include/asm/cache.h @@ -15,6 +15,8 @@ #define L1_CACHE_BYTES (1 << L1_CACHE_SHIFT) #define SMP_CACHE_BYTES L1_CACHE_BYTES +#define ARCH_KMALLOC_MINALIGN L1_CACHE_BYTES + #ifdef CONFIG_SMP #define __cacheline_aligned #else |