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| author | FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp> | 2010-05-24 14:32:54 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2010-05-25 08:07:02 -0700 |
| commit | 69dcf3db03626c4f18de624e8632454ea12ff260 (patch) | |
| tree | 615c72af11acf7153bd60808e970e55398f19593 /arch/frv | |
| parent | 7ca8b9c0dafd1cb36289aa4c92c7beae7adcd34f (diff) | |
| download | linux-69dcf3db03626c4f18de624e8632454ea12ff260.tar.gz linux-69dcf3db03626c4f18de624e8632454ea12ff260.tar.bz2 linux-69dcf3db03626c4f18de624e8632454ea12ff260.zip | |
frv: set ARCH_KMALLOC_MINALIGN
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: David Howells <dhowells@redhat.com>
Acked-by: Pekka Enberg <penberg@cs.helsinki.fi>
Cc: <stable@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'arch/frv')
| -rw-r--r-- | arch/frv/include/asm/cache.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/arch/frv/include/asm/cache.h b/arch/frv/include/asm/cache.h index 2797163b8f4f..7dc0f0f85b7c 100644 --- a/arch/frv/include/asm/cache.h +++ b/arch/frv/include/asm/cache.h @@ -17,6 +17,8 @@ #define L1_CACHE_SHIFT (CONFIG_FRV_L1_CACHE_SHIFT) #define L1_CACHE_BYTES (1 << L1_CACHE_SHIFT) +#define ARCH_KMALLOC_MINALIGN L1_CACHE_BYTES + #define __cacheline_aligned __attribute__((aligned(L1_CACHE_BYTES))) #define ____cacheline_aligned __attribute__((aligned(L1_CACHE_BYTES))) |