1#ifndef _LINUX_NTP_INTERNAL_H
 2#define _LINUX_NTP_INTERNAL_H
 3
 4extern void ntp_init(void);
 5extern void ntp_clear(void);
 6/* Returns how long ticks are at present, in ns / 2^NTP_SCALE_SHIFT. */
 7extern u64 ntp_tick_length(void);
 8extern int second_overflow(unsigned long secs);
 9extern int ntp_validate_timex(struct timex *);
10extern int __do_adjtimex(struct timex *, struct timespec *, s32 *);
11extern void __hardpps(const struct timespec *, const struct timespec *);
12#endif /* _LINUX_NTP_INTERNAL_H */