From 1b27d05b6e21249d2338be26dfcbe8f8d8ff8a5b Mon Sep 17 00:00:00 2001 From: Pekka Enberg Date: Mon, 28 Apr 2008 02:12:22 -0700 Subject: [PATCH] mm: move cache_line_size() to 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 . Cc: Thomas Gleixner Cc: Ingo Molnar Cc: H. Peter Anvin Reviewed-by: Christoph Lameter Signed-off-by: Pekka Enberg Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- arch/x86/Kconfig | 3 +++ include/linux/cache.h | 4 ++++ mm/slab.c | 4 ---- mm/slub.c | 5 ----- 4 files changed, 7 insertions(+), 9 deletions(-) diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig index e5790fe9e33..a8ce13a5476 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 4552504c022..97e24881c4c 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 7bc4a136846..39d20f8a079 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 48fff83a1e9..38914bc64ac 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 -- 2.41.1