1 #ifndef _LINUX_TIMEKEEPING_H
2 #define _LINUX_TIMEKEEPING_H
4 /* Included from linux/ktime.h */
6 void timekeeping_init(void);
7 extern int timekeeping_suspended;
10 * Get and set timeofday
12 extern void do_gettimeofday(struct timeval *tv);
13 extern int do_settimeofday(const struct timespec *tv);
14 extern int do_sys_settimeofday(const struct timespec *tv,
15 const struct timezone *tz);
18 * Kernel time accessors
20 unsigned long get_seconds(void);
21 struct timespec current_kernel_time(void);
22 /* does not take xtime_lock */
23 struct timespec __current_kernel_time(void);
26 * timespec based interfaces
28 struct timespec get_monotonic_coarse(void);
29 extern void getrawmonotonic(struct timespec *ts);
30 extern void monotonic_to_bootbased(struct timespec *ts);
31 extern void get_monotonic_boottime(struct timespec *ts);
32 extern void ktime_get_ts(struct timespec *ts);
34 extern int __getnstimeofday(struct timespec *tv);
35 extern void getnstimeofday(struct timespec *tv);
36 extern void getboottime(struct timespec *ts);
38 #define do_posix_clock_monotonic_gettime(ts) ktime_get_ts(ts)
39 #define ktime_get_real_ts(ts) getnstimeofday(ts)
43 * ktime_t based interfaces
45 extern ktime_t ktime_get(void);
46 extern ktime_t ktime_get_real(void);
47 extern ktime_t ktime_get_boottime(void);
48 extern ktime_t ktime_get_monotonic_offset(void);
49 extern ktime_t ktime_get_clocktai(void);
54 extern void timekeeping_inject_sleeptime(struct timespec *delta);
59 extern void getnstime_raw_and_real(struct timespec *ts_raw,
60 struct timespec *ts_real);
63 * Persistent clock related interfaces
65 extern bool persistent_clock_exist;
66 extern int persistent_clock_is_local;
68 static inline bool has_persistent_clock(void)
70 return persistent_clock_exist;
73 extern void read_persistent_clock(struct timespec *ts);
74 extern void read_boot_clock(struct timespec *ts);
75 extern int update_persistent_clock(struct timespec now);