cache.h

来自「讲述linux的初始化过程」· C头文件 代码 · 共 29 行

#ifndef __LINUX_CACHE_H
#define __LINUX_CACHE_H

#include <asm/cache.h>

#ifndef L1_CACHE_ALIGN
#define L1_CACHE_ALIGN(x) (((x)+(L1_CACHE_BYTES-1))&~(L1_CACHE_BYTES-1))
#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
#ifdef MODULE
#define __cacheline_aligned ____cacheline_aligned
#else
#define __cacheline_aligned					\
  __attribute__((__aligned__(SMP_CACHE_BYTES),			\
		 __section__(".data.cacheline_aligned")))
#endif
#endif /* __cacheline_aligned */

#endif /* __LINUX_CACHE_H */