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| author | Pekka Enberg <penberg@cs.helsinki.fi> | 2008-04-28 02:12:22 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2008-04-28 08:58:19 -0700 |
| commit | 1b27d05b6e21249d2338be26dfcbe8f8d8ff8a5b (patch) | |
| tree | c5413d5f64efed1aa84bfa0ab718f1e2a2f6f9cb | |
| parent | 19fc3f0acde32636529969570055c7e2a744787c (diff) | |
| download | blackbird-op-linux-1b27d05b6e21249d2338be26dfcbe8f8d8ff8a5b.tar.gz blackbird-op-linux-1b27d05b6e21249d2338be26dfcbe8f8d8ff8a5b.zip | |
mm: move cache_line_size() to <linux/cache.h>
Not all architectures define cache_line_size() so as suggested by Andrew move
the private implementations in mm/slab.c and mm/slob.c to <linux/cache.h>.
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: H. Peter Anvin <hpa@zytor.com>
Reviewed-by: Christoph Lameter <clameter@sgi.com>
Signed-off-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>
| -rw-r--r-- | arch/x86/Kconfig | 3 | ||||
| -rw-r--r-- | include/linux/cache.h | 4 | ||||
| -rw-r--r-- | mm/slab.c | 4 | ||||
| -rw-r--r-- | mm/slub.c | 5 |
4 files changed, 7 insertions, 9 deletions
diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig index e5790fe9e330..a8ce13a54764 100644 --- a/arch/x86/Kconfig +++ b/arch/x86/Kconfig @@ -114,6 +114,9 @@ config GENERIC_TIME_VSYSCALL config ARCH_HAS_CPU_RELAX def_bool y +config ARCH_HAS_CACHE_LINE_SIZE + def_bool y + config HAVE_SETUP_PER_CPU_AREA def_bool X86_64 || (X86_SMP && !X86_VOYAGER) diff --git a/include/linux/cache.h b/include/linux/cache.h index 4552504c0228..97e24881c4c6 100644 --- a/include/linux/cache.h +++ b/include/linux/cache.h @@ -60,4 +60,8 @@ #endif #endif +#ifndef CONFIG_ARCH_HAS_CACHE_LINE_SIZE +#define cache_line_size() L1_CACHE_BYTES +#endif + #endif /* __LINUX_CACHE_H */ diff --git a/mm/slab.c b/mm/slab.c index 7bc4a136846e..39d20f8a0791 100644 --- a/mm/slab.c +++ b/mm/slab.c @@ -139,10 +139,6 @@ #define BYTES_PER_WORD sizeof(void *) #define REDZONE_ALIGN max(BYTES_PER_WORD, __alignof__(unsigned long long)) -#ifndef cache_line_size -#define cache_line_size() L1_CACHE_BYTES -#endif - #ifndef ARCH_KMALLOC_MINALIGN /* * Enforce a minimum alignment for the kmalloc caches. diff --git a/mm/slub.c b/mm/slub.c index 48fff83a1e9d..38914bc64aca 100644 --- a/mm/slub.c +++ b/mm/slub.c @@ -207,11 +207,6 @@ static inline void ClearSlabDebug(struct page *page) #define __KMALLOC_CACHE 0x20000000 /* objects freed using kfree */ #define __PAGE_ALLOC_FALLBACK 0x10000000 /* Allow fallback to page alloc */ -/* Not all arches define cache_line_size */ -#ifndef cache_line_size -#define cache_line_size() L1_CACHE_BYTES -#endif - static int kmem_size = sizeof(struct kmem_cache); #ifdef CONFIG_SMP |
