210 lines
4.3 KiB
C
210 lines
4.3 KiB
C
#ifndef _LINUX_TIMEKEEPING_H
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#define _LINUX_TIMEKEEPING_H
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/* Included from linux/ktime.h */
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void timekeeping_init(void);
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extern int timekeeping_suspended;
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/*
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* Get and set timeofday
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*/
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extern void do_gettimeofday(struct timeval *tv);
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extern int do_settimeofday(const struct timespec *tv);
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extern int do_sys_settimeofday(const struct timespec *tv,
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const struct timezone *tz);
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/*
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* Kernel time accessors
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*/
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unsigned long get_seconds(void);
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struct timespec current_kernel_time(void);
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/* does not take xtime_lock */
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struct timespec __current_kernel_time(void);
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/*
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* timespec based interfaces
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*/
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struct timespec get_monotonic_coarse(void);
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extern void getrawmonotonic(struct timespec *ts);
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extern void ktime_get_ts64(struct timespec64 *ts);
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extern int __getnstimeofday64(struct timespec64 *tv);
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extern void getnstimeofday64(struct timespec64 *tv);
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#if BITS_PER_LONG == 64
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static inline int __getnstimeofday(struct timespec *ts)
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{
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return __getnstimeofday64(ts);
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}
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static inline void getnstimeofday(struct timespec *ts)
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{
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getnstimeofday64(ts);
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}
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static inline void ktime_get_ts(struct timespec *ts)
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{
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ktime_get_ts64(ts);
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}
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static inline void ktime_get_real_ts(struct timespec *ts)
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{
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getnstimeofday64(ts);
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}
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#else
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static inline int __getnstimeofday(struct timespec *ts)
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{
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struct timespec64 ts64;
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int ret = __getnstimeofday64(&ts64);
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*ts = timespec64_to_timespec(ts64);
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return ret;
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}
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static inline void getnstimeofday(struct timespec *ts)
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{
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struct timespec64 ts64;
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getnstimeofday64(&ts64);
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*ts = timespec64_to_timespec(ts64);
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}
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static inline void ktime_get_ts(struct timespec *ts)
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{
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struct timespec64 ts64;
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ktime_get_ts64(&ts64);
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*ts = timespec64_to_timespec(ts64);
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}
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static inline void ktime_get_real_ts(struct timespec *ts)
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{
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struct timespec64 ts64;
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getnstimeofday64(&ts64);
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*ts = timespec64_to_timespec(ts64);
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}
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#endif
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extern void getboottime(struct timespec *ts);
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#define do_posix_clock_monotonic_gettime(ts) ktime_get_ts(ts)
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#define ktime_get_real_ts64(ts) getnstimeofday64(ts)
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/*
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* ktime_t based interfaces
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*/
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enum tk_offsets {
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TK_OFFS_REAL,
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TK_OFFS_BOOT,
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TK_OFFS_TAI,
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TK_OFFS_MAX,
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};
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extern ktime_t ktime_get(void);
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extern ktime_t ktime_get_with_offset(enum tk_offsets offs);
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extern ktime_t ktime_mono_to_any(ktime_t tmono, enum tk_offsets offs);
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extern ktime_t ktime_get_raw(void);
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/**
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* ktime_get_real - get the real (wall-) time in ktime_t format
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*/
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static inline ktime_t ktime_get_real(void)
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{
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return ktime_get_with_offset(TK_OFFS_REAL);
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}
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/**
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* ktime_get_boottime - Returns monotonic time since boot in ktime_t format
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*
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* This is similar to CLOCK_MONTONIC/ktime_get, but also includes the
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* time spent in suspend.
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*/
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static inline ktime_t ktime_get_boottime(void)
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{
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return ktime_get_with_offset(TK_OFFS_BOOT);
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}
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/**
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* ktime_get_clocktai - Returns the TAI time of day in ktime_t format
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*/
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static inline ktime_t ktime_get_clocktai(void)
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{
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return ktime_get_with_offset(TK_OFFS_TAI);
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}
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/**
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* ktime_mono_to_real - Convert monotonic time to clock realtime
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*/
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static inline ktime_t ktime_mono_to_real(ktime_t mono)
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{
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return ktime_mono_to_any(mono, TK_OFFS_REAL);
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}
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static inline u64 ktime_get_ns(void)
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{
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return ktime_to_ns(ktime_get());
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}
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static inline u64 ktime_get_real_ns(void)
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{
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return ktime_to_ns(ktime_get_real());
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}
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static inline u64 ktime_get_boot_ns(void)
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{
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return ktime_to_ns(ktime_get_boottime());
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}
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static inline u64 ktime_get_raw_ns(void)
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{
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return ktime_to_ns(ktime_get_raw());
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}
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extern u64 ktime_get_mono_fast_ns(void);
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/*
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* Timespec interfaces utilizing the ktime based ones
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*/
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static inline void get_monotonic_boottime(struct timespec *ts)
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{
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*ts = ktime_to_timespec(ktime_get_boottime());
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}
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static inline void timekeeping_clocktai(struct timespec *ts)
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{
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*ts = ktime_to_timespec(ktime_get_clocktai());
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}
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/*
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* RTC specific
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*/
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extern void timekeeping_inject_sleeptime(struct timespec *delta);
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/*
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* PPS accessor
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*/
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extern void getnstime_raw_and_real(struct timespec *ts_raw,
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struct timespec *ts_real);
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/*
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* Persistent clock related interfaces
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*/
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extern bool persistent_clock_exist;
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extern int persistent_clock_is_local;
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static inline bool has_persistent_clock(void)
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{
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return persistent_clock_exist;
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}
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extern void read_persistent_clock(struct timespec *ts);
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extern void read_boot_clock(struct timespec *ts);
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extern int update_persistent_clock(struct timespec now);
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#endif
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