1. 根目录:
2. arch
3. arm
4. include
5. asm
6. mach
7. time.h

/*
 * arch/arm/include/asm/mach/time.h
 *
 * Copyright (C) 2004 MontaVista Software, Inc.
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 2 as
 * published by the Free Software Foundation.
 */
#ifndef __ASM_ARM_MACH_TIME_H
#define __ASM_ARM_MACH_TIME_H

extern void timer_tick(void);

typedef void (*clock_access_fn)(struct timespec64 *);
extern int register_persistent_clock(clock_access_fn read_boot,
				     clock_access_fn read_persistent);

#endif