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Diffstat (limited to 'include/linux/cache.h')
| -rw-r--r-- | include/linux/cache.h | 51 |
1 files changed, 51 insertions, 0 deletions
diff --git a/include/linux/cache.h b/include/linux/cache.h new file mode 100644 index 000000000000..4d767b93738a --- /dev/null +++ b/include/linux/cache.h @@ -0,0 +1,51 @@ +#ifndef __LINUX_CACHE_H +#define __LINUX_CACHE_H + +#include <linux/kernel.h> +#include <linux/config.h> +#include <asm/cache.h> + +#ifndef L1_CACHE_ALIGN +#define L1_CACHE_ALIGN(x) ALIGN(x, L1_CACHE_BYTES) +#endif + +#ifndef SMP_CACHE_BYTES +#define SMP_CACHE_BYTES L1_CACHE_BYTES +#endif + +#ifndef ____cacheline_aligned +#define ____cacheline_aligned __attribute__((__aligned__(SMP_CACHE_BYTES))) +#endif + +#ifndef ____cacheline_aligned_in_smp +#ifdef CONFIG_SMP +#define ____cacheline_aligned_in_smp ____cacheline_aligned +#else +#define ____cacheline_aligned_in_smp +#endif /* CONFIG_SMP */ +#endif + +#ifndef __cacheline_aligned +#define __cacheline_aligned \ + __attribute__((__aligned__(SMP_CACHE_BYTES), \ + __section__(".data.cacheline_aligned"))) +#endif /* __cacheline_aligned */ + +#ifndef __cacheline_aligned_in_smp +#ifdef CONFIG_SMP +#define __cacheline_aligned_in_smp __cacheline_aligned +#else +#define __cacheline_aligned_in_smp +#endif /* CONFIG_SMP */ +#endif + +#if !defined(____cacheline_maxaligned_in_smp) +#if defined(CONFIG_SMP) +#define ____cacheline_maxaligned_in_smp \ + __attribute__((__aligned__(1 << (L1_CACHE_SHIFT_MAX)))) +#else +#define ____cacheline_maxaligned_in_smp +#endif +#endif + +#endif /* __LINUX_CACHE_H */ |