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Blackfin: set ARCH_KMALLOC_MINALIGN

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commit 76b99699a2 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: Pekka Enberg <penberg@cs.helsinki.fi>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This commit is contained in:
FUJITA Tomonori
2010-05-19 23:21:38 -04:00
committed by Greg Kroah-Hartman
parent 12108de038
commit e4ea66658a
1 changed files with 2 additions and 0 deletions
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2
arch/blackfin/include/asm/cache.h
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@@ -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