mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
synced 2024-10-30 16:07:39 +00:00
57 lines
1.3 KiB
C
57 lines
1.3 KiB
C
#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
|
|
|
|
#if defined(CONFIG_X86) || defined(CONFIG_SPARC64)
|
|
#define __read_mostly __attribute__((__section__(".data.read_mostly")))
|
|
#else
|
|
#define __read_mostly
|
|
#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 */
|