1. 根目录:
2. arch
3. m68k
4. include
5. uapi
6. asm
7. cachectl.h

#ifndef _M68K_CACHECTL_H
#define _M68K_CACHECTL_H

/* Definitions for the cacheflush system call.  */

#define FLUSH_SCOPE_LINE    1	/* Flush a cache line */
#define FLUSH_SCOPE_PAGE    2	/* Flush a page */
#define FLUSH_SCOPE_ALL     3	/* Flush the whole cache -- superuser only */

#define FLUSH_CACHE_DATA    1	/* Writeback and flush data cache */
#define FLUSH_CACHE_INSN    2	/* Flush instruction cache */
#define FLUSH_CACHE_BOTH    3	/* Flush both caches */

#endif /* _M68K_CACHECTL_H */