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| author | FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp> | 2010-05-20 03:21:38 (GMT) |
|---|---|---|
| committer | Mike Frysinger <vapier@gentoo.org> | 2010-05-22 18:19:13 (GMT) |
| commit | 76b99699a2bbf9efdb578f9a38a202af2ecb354b (patch) | |
| tree | ef7eba05b7b611009d2fb108e58b655550387416 /arch/blackfin | |
| parent | eb5400b6131e6ebaacf809357643a22a72d5cc4c (diff) | |
| download | linux-76b99699a2bbf9efdb578f9a38a202af2ecb354b.tar.xz | |
Blackfin: 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: Pekka Enberg <penberg@cs.helsinki.fi>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
Diffstat (limited to 'arch/blackfin')
| -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 8542bc3..93f6c63 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 |