cache.h

《嵌入式系统设计与实例开发实验教材二源码》Linux内核移植与编译实验

/*
 * include/asm-sparc64/cache.h
 */
#ifndef __ARCH_SPARC64_CACHE_H
#define __ARCH_SPARC64_CACHE_H

/* bytes per L1 cache line */
#define        L1_CACHE_BYTES		32 /* Two 16-byte sub-blocks per line. */

#define        L1_CACHE_ALIGN(x)       (((x)+(L1_CACHE_BYTES-1))&~(L1_CACHE_BYTES-1))

#define        SMP_CACHE_BYTES_SHIFT	6
#define        SMP_CACHE_BYTES		(1 << SMP_CACHE_BYTES_SHIFT) /* L2 cache line size. */

#ifdef MODULE
#define __cacheline_aligned __attribute__((__aligned__(SMP_CACHE_BYTES)))
#else
#define __cacheline_aligned					\
  __attribute__((__aligned__(SMP_CACHE_BYTES),			\
		 __section__(".data.cacheline_aligned")))
#endif

#endif