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_settimeofday64(const struct timespec64 *ts);
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 timespec64 current_kernel_time64(void);
22 /* does not take xtime_lock */
23 struct timespec __current_kernel_time(void);
25 static inline struct timespec current_kernel_time(void)
27 struct timespec64 now = current_kernel_time64();
29 return timespec64_to_timespec(now);
33 * timespec based interfaces
35 struct timespec64 get_monotonic_coarse64(void);
36 extern void getrawmonotonic64(struct timespec64 *ts);
37 extern void ktime_get_ts64(struct timespec64 *ts);
38 extern time64_t ktime_get_seconds(void);
39 extern time64_t ktime_get_real_seconds(void);
41 extern int __getnstimeofday64(struct timespec64 *tv);
42 extern void getnstimeofday64(struct timespec64 *tv);
43 extern void getboottime64(struct timespec64 *ts);
45 #if BITS_PER_LONG == 64
47 * Deprecated. Use do_settimeofday64().
49 static inline int do_settimeofday(const struct timespec *ts)
51 return do_settimeofday64(ts);
54 static inline int __getnstimeofday(struct timespec *ts)
56 return __getnstimeofday64(ts);
59 static inline void getnstimeofday(struct timespec *ts)
64 static inline void ktime_get_ts(struct timespec *ts)
69 static inline void ktime_get_real_ts(struct timespec *ts)
74 static inline void getrawmonotonic(struct timespec *ts)
76 getrawmonotonic64(ts);
79 static inline struct timespec get_monotonic_coarse(void)
81 return get_monotonic_coarse64();
84 static inline void getboottime(struct timespec *ts)
86 return getboottime64(ts);
90 * Deprecated. Use do_settimeofday64().
92 static inline int do_settimeofday(const struct timespec *ts)
94 struct timespec64 ts64;
96 ts64 = timespec_to_timespec64(*ts);
97 return do_settimeofday64(&ts64);
100 static inline int __getnstimeofday(struct timespec *ts)
102 struct timespec64 ts64;
103 int ret = __getnstimeofday64(&ts64);
105 *ts = timespec64_to_timespec(ts64);
109 static inline void getnstimeofday(struct timespec *ts)
111 struct timespec64 ts64;
113 getnstimeofday64(&ts64);
114 *ts = timespec64_to_timespec(ts64);
117 static inline void ktime_get_ts(struct timespec *ts)
119 struct timespec64 ts64;
121 ktime_get_ts64(&ts64);
122 *ts = timespec64_to_timespec(ts64);
125 static inline void ktime_get_real_ts(struct timespec *ts)
127 struct timespec64 ts64;
129 getnstimeofday64(&ts64);
130 *ts = timespec64_to_timespec(ts64);
133 static inline void getrawmonotonic(struct timespec *ts)
135 struct timespec64 ts64;
137 getrawmonotonic64(&ts64);
138 *ts = timespec64_to_timespec(ts64);
141 static inline struct timespec get_monotonic_coarse(void)
143 return timespec64_to_timespec(get_monotonic_coarse64());
146 static inline void getboottime(struct timespec *ts)
148 struct timespec64 ts64;
150 getboottime64(&ts64);
151 *ts = timespec64_to_timespec(ts64);
155 #define ktime_get_real_ts64(ts) getnstimeofday64(ts)
158 * ktime_t based interfaces
168 extern ktime_t ktime_get(void);
169 extern ktime_t ktime_get_with_offset(enum tk_offsets offs);
170 extern ktime_t ktime_mono_to_any(ktime_t tmono, enum tk_offsets offs);
171 extern ktime_t ktime_get_raw(void);
172 extern u32 ktime_get_resolution_ns(void);
175 * ktime_get_real - get the real (wall-) time in ktime_t format
177 static inline ktime_t ktime_get_real(void)
179 return ktime_get_with_offset(TK_OFFS_REAL);
183 * ktime_get_boottime - Returns monotonic time since boot in ktime_t format
185 * This is similar to CLOCK_MONTONIC/ktime_get, but also includes the
186 * time spent in suspend.
188 static inline ktime_t ktime_get_boottime(void)
190 return ktime_get_with_offset(TK_OFFS_BOOT);
194 * ktime_get_clocktai - Returns the TAI time of day in ktime_t format
196 static inline ktime_t ktime_get_clocktai(void)
198 return ktime_get_with_offset(TK_OFFS_TAI);
202 * ktime_mono_to_real - Convert monotonic time to clock realtime
204 static inline ktime_t ktime_mono_to_real(ktime_t mono)
206 return ktime_mono_to_any(mono, TK_OFFS_REAL);
209 static inline u64 ktime_get_ns(void)
211 return ktime_to_ns(ktime_get());
214 static inline u64 ktime_get_real_ns(void)
216 return ktime_to_ns(ktime_get_real());
219 static inline u64 ktime_get_boot_ns(void)
221 return ktime_to_ns(ktime_get_boottime());
224 static inline u64 ktime_get_tai_ns(void)
226 return ktime_to_ns(ktime_get_clocktai());
229 static inline u64 ktime_get_raw_ns(void)
231 return ktime_to_ns(ktime_get_raw());
234 extern u64 ktime_get_mono_fast_ns(void);
235 extern u64 ktime_get_raw_fast_ns(void);
238 * Timespec interfaces utilizing the ktime based ones
240 static inline void get_monotonic_boottime(struct timespec *ts)
242 *ts = ktime_to_timespec(ktime_get_boottime());
245 static inline void get_monotonic_boottime64(struct timespec64 *ts)
247 *ts = ktime_to_timespec64(ktime_get_boottime());
250 static inline void timekeeping_clocktai(struct timespec *ts)
252 *ts = ktime_to_timespec(ktime_get_clocktai());
258 extern bool timekeeping_rtc_skipsuspend(void);
259 extern bool timekeeping_rtc_skipresume(void);
261 extern void timekeeping_inject_sleeptime64(struct timespec64 *delta);
266 extern void getnstime_raw_and_real(struct timespec *ts_raw,
267 struct timespec *ts_real);
270 * Persistent clock related interfaces
272 extern int persistent_clock_is_local;
274 extern void read_persistent_clock(struct timespec *ts);
275 extern void read_persistent_clock64(struct timespec64 *ts);
276 extern void read_boot_clock64(struct timespec64 *ts);
277 extern int update_persistent_clock(struct timespec now);
278 extern int update_persistent_clock64(struct timespec64 now);