| Date | Thu, 01 Jul 2010 10:43:10 -0700 | From | Greg KH <> | Subject | [100/200] frv: set ARCH_KMALLOC_MINALIGN |
| |
2.6.34-stable review patch. If anyone has any objections, please let me know.
------------------
From: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
commit 69dcf3db03626c4f18de624e8632454ea12ff260 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: David Howells <dhowells@redhat.com> Acked-by: Pekka Enberg <penberg@cs.helsinki.fi> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
--- arch/frv/include/asm/cache.h | 2 ++ 1 file changed, 2 insertions(+)
--- 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)))
|