Commit 69dcf3db authored May 24, 2010 by FUJITA Tomonori Committed by Linus Torvalds May 25, 2010

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>

parent 7ca8b9c0

arch/frv/include/asm/cache.h

+2 −0

Original line number	Original line	Diff line number	Diff line
	@@ -17,6 +17,8 @@
	#define L1_CACHE_SHIFT (CONFIG_FRV_L1_CACHE_SHIFT)		#define L1_CACHE_SHIFT (CONFIG_FRV_L1_CACHE_SHIFT)
	#define L1_CACHE_BYTES (1 << 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)))
	#define ____cacheline_aligned __attribute__((aligned(L1_CACHE_BYTES)))		#define ____cacheline_aligned __attribute__((aligned(L1_CACHE_BYTES)))