diff options
| author | David Woodhouse | 2010-05-19 12:01:42 +0100 |
|---|---|---|
| committer | Pekka Enberg | 2010-05-19 22:03:13 +0300 |
| commit | 1f0ce8b3dd667dca720a47869f8110c298f0e5b8 (patch) | |
| tree | c0e260b5d8e6d3fe55be2bf6772265ad48878efd | |
| parent | e40152ee1e1c7a63f4777791863215e3faa37a86 (diff) | |
mm: Move ARCH_SLAB_MINALIGN and ARCH_KMALLOC_MINALIGN to <linux/slab_def.h>
Acked-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
Signed-off-by: Pekka Enberg <penberg@cs.helsinki.fi>
| -rw-r--r-- | include/linux/slab_def.h | 24 | ||||
| -rw-r--r-- | mm/slab.c | 24 |
2 files changed, 24 insertions, 24 deletions
diff --git a/include/linux/slab_def.h b/include/linux/slab_def.h index ca6b2b317991..1812dac8c496 100644 --- a/include/linux/slab_def.h +++ b/include/linux/slab_def.h @@ -16,6 +16,30 @@ #include <linux/compiler.h> #include <linux/kmemtrace.h> +#ifndef ARCH_KMALLOC_MINALIGN +/* + * Enforce a minimum alignment for the kmalloc caches. + * Usually, the kmalloc caches are cache_line_size() aligned, except when + * DEBUG and FORCED_DEBUG are enabled, then they are BYTES_PER_WORD aligned. + * Some archs want to perform DMA into kmalloc caches and need a guaranteed + * alignment larger than the alignment of a 64-bit integer. + * ARCH_KMALLOC_MINALIGN allows that. + * Note that increasing this value may disable some debug features. + */ +#define ARCH_KMALLOC_MINALIGN __alignof__(unsigned long long) +#endif + +#ifndef ARCH_SLAB_MINALIGN +/* + * Enforce a minimum alignment for all caches. + * Intended for archs that get misalignment faults even for BYTES_PER_WORD + * aligned buffers. Includes ARCH_KMALLOC_MINALIGN. + * If possible: Do not enable this flag for CONFIG_DEBUG_SLAB, it disables + * some debug features. + */ +#define ARCH_SLAB_MINALIGN 0 +#endif + /* * struct kmem_cache * diff --git a/mm/slab.c b/mm/slab.c index bac0f4fcc216..7401ddc24306 100644 --- a/mm/slab.c +++ b/mm/slab.c @@ -144,30 +144,6 @@ #define BYTES_PER_WORD sizeof(void *) #define REDZONE_ALIGN max(BYTES_PER_WORD, __alignof__(unsigned long long)) -#ifndef ARCH_KMALLOC_MINALIGN -/* - * Enforce a minimum alignment for the kmalloc caches. - * Usually, the kmalloc caches are cache_line_size() aligned, except when - * DEBUG and FORCED_DEBUG are enabled, then they are BYTES_PER_WORD aligned. - * Some archs want to perform DMA into kmalloc caches and need a guaranteed - * alignment larger than the alignment of a 64-bit integer. - * ARCH_KMALLOC_MINALIGN allows that. - * Note that increasing this value may disable some debug features. - */ -#define ARCH_KMALLOC_MINALIGN __alignof__(unsigned long long) -#endif - -#ifndef ARCH_SLAB_MINALIGN -/* - * Enforce a minimum alignment for all caches. - * Intended for archs that get misalignment faults even for BYTES_PER_WORD - * aligned buffers. Includes ARCH_KMALLOC_MINALIGN. - * If possible: Do not enable this flag for CONFIG_DEBUG_SLAB, it disables - * some debug features. - */ -#define ARCH_SLAB_MINALIGN 0 -#endif - #ifndef ARCH_KMALLOC_FLAGS #define ARCH_KMALLOC_FLAGS SLAB_HWCACHE_ALIGN #endif |