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authorFUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>2010-05-24 14:32:54 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2010-05-25 08:07:02 -0700
commit69dcf3db03626c4f18de624e8632454ea12ff260 (patch)
tree615c72af11acf7153bd60808e970e55398f19593 /arch/frv
parent7ca8b9c0dafd1cb36289aa4c92c7beae7adcd34f (diff)
downloadlinux-2.6.34-ux500-69dcf3db03626c4f18de624e8632454ea12ff260.tar.gz
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.h2
1 files changed, 2 insertions, 0 deletions
diff --git a/arch/frv/include/asm/cache.h b/arch/frv/include/asm/cache.h
index 2797163b8f4..7dc0f0f85b7 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)))