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 <[email protected]> Acked-by: David Howells <[email protected]> Acked-by: Pekka Enberg <[email protected]> Cc: <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
kyagi · May 25, 2010 · 69dcf3d · 69dcf3d
1 parent 7ca8b9c
commit 69dcf3d
Showing 1 changed file with 2 additions and 0 deletions.
diff --git 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)))