1#ifndef _LINUX_TIMEKEEPING_H 2#define _LINUX_TIMEKEEPING_H 3 4/* Included from linux/ktime.h */ 5 6void timekeeping_init(void); 7extern int timekeeping_suspended; 8 9/* 10 * Get and set timeofday 11 */ 12extern void do_gettimeofday(struct timeval *tv); 13extern int do_settimeofday64(const struct timespec64 *ts); 14extern int do_sys_settimeofday(const struct timespec *tv, 15 const struct timezone *tz); 16 17/* 18 * Kernel time accessors 19 */ 20unsigned long get_seconds(void); 21struct timespec current_kernel_time(void); 22/* does not take xtime_lock */ 23struct timespec __current_kernel_time(void); 24 25/* 26 * timespec based interfaces 27 */ 28struct timespec64 get_monotonic_coarse64(void); 29extern void getrawmonotonic64(struct timespec64 *ts); 30extern void ktime_get_ts64(struct timespec64 *ts); 31extern time64_t ktime_get_seconds(void); 32extern time64_t ktime_get_real_seconds(void); 33 34extern int __getnstimeofday64(struct timespec64 *tv); 35extern void getnstimeofday64(struct timespec64 *tv); 36extern void getboottime64(struct timespec64 *ts); 37 38#if BITS_PER_LONG == 64 39/** 40 * Deprecated. Use do_settimeofday64(). 41 */ 42static inline int do_settimeofday(const struct timespec *ts) 43{ 44 return do_settimeofday64(ts); 45} 46 47static inline int __getnstimeofday(struct timespec *ts) 48{ 49 return __getnstimeofday64(ts); 50} 51 52static inline void getnstimeofday(struct timespec *ts) 53{ 54 getnstimeofday64(ts); 55} 56 57static inline void ktime_get_ts(struct timespec *ts) 58{ 59 ktime_get_ts64(ts); 60} 61 62static inline void ktime_get_real_ts(struct timespec *ts) 63{ 64 getnstimeofday64(ts); 65} 66 67static inline void getrawmonotonic(struct timespec *ts) 68{ 69 getrawmonotonic64(ts); 70} 71 72static inline struct timespec get_monotonic_coarse(void) 73{ 74 return get_monotonic_coarse64(); 75} 76 77static inline void getboottime(struct timespec *ts) 78{ 79 return getboottime64(ts); 80} 81#else 82/** 83 * Deprecated. Use do_settimeofday64(). 84 */ 85static inline int do_settimeofday(const struct timespec *ts) 86{ 87 struct timespec64 ts64; 88 89 ts64 = timespec_to_timespec64(*ts); 90 return do_settimeofday64(&ts64); 91} 92 93static inline int __getnstimeofday(struct timespec *ts) 94{ 95 struct timespec64 ts64; 96 int ret = __getnstimeofday64(&ts64); 97 98 *ts = timespec64_to_timespec(ts64); 99 return ret; 100} 101 102static inline void getnstimeofday(struct timespec *ts) 103{ 104 struct timespec64 ts64; 105 106 getnstimeofday64(&ts64); 107 *ts = timespec64_to_timespec(ts64); 108} 109 110static inline void ktime_get_ts(struct timespec *ts) 111{ 112 struct timespec64 ts64; 113 114 ktime_get_ts64(&ts64); 115 *ts = timespec64_to_timespec(ts64); 116} 117 118static inline void ktime_get_real_ts(struct timespec *ts) 119{ 120 struct timespec64 ts64; 121 122 getnstimeofday64(&ts64); 123 *ts = timespec64_to_timespec(ts64); 124} 125 126static inline void getrawmonotonic(struct timespec *ts) 127{ 128 struct timespec64 ts64; 129 130 getrawmonotonic64(&ts64); 131 *ts = timespec64_to_timespec(ts64); 132} 133 134static inline struct timespec get_monotonic_coarse(void) 135{ 136 return timespec64_to_timespec(get_monotonic_coarse64()); 137} 138 139static inline void getboottime(struct timespec *ts) 140{ 141 struct timespec64 ts64; 142 143 getboottime64(&ts64); 144 *ts = timespec64_to_timespec(ts64); 145} 146#endif 147 148#define do_posix_clock_monotonic_gettime(ts) ktime_get_ts(ts) 149#define ktime_get_real_ts64(ts) getnstimeofday64(ts) 150 151/* 152 * ktime_t based interfaces 153 */ 154 155enum tk_offsets { 156 TK_OFFS_REAL, 157 TK_OFFS_BOOT, 158 TK_OFFS_TAI, 159 TK_OFFS_MAX, 160}; 161 162extern ktime_t ktime_get(void); 163extern ktime_t ktime_get_with_offset(enum tk_offsets offs); 164extern ktime_t ktime_mono_to_any(ktime_t tmono, enum tk_offsets offs); 165extern ktime_t ktime_get_raw(void); 166 167/** 168 * ktime_get_real - get the real (wall-) time in ktime_t format 169 */ 170static inline ktime_t ktime_get_real(void) 171{ 172 return ktime_get_with_offset(TK_OFFS_REAL); 173} 174 175/** 176 * ktime_get_boottime - Returns monotonic time since boot in ktime_t format 177 * 178 * This is similar to CLOCK_MONTONIC/ktime_get, but also includes the 179 * time spent in suspend. 180 */ 181static inline ktime_t ktime_get_boottime(void) 182{ 183 return ktime_get_with_offset(TK_OFFS_BOOT); 184} 185 186/** 187 * ktime_get_clocktai - Returns the TAI time of day in ktime_t format 188 */ 189static inline ktime_t ktime_get_clocktai(void) 190{ 191 return ktime_get_with_offset(TK_OFFS_TAI); 192} 193 194/** 195 * ktime_mono_to_real - Convert monotonic time to clock realtime 196 */ 197static inline ktime_t ktime_mono_to_real(ktime_t mono) 198{ 199 return ktime_mono_to_any(mono, TK_OFFS_REAL); 200} 201 202static inline u64 ktime_get_ns(void) 203{ 204 return ktime_to_ns(ktime_get()); 205} 206 207static inline u64 ktime_get_real_ns(void) 208{ 209 return ktime_to_ns(ktime_get_real()); 210} 211 212static inline u64 ktime_get_boot_ns(void) 213{ 214 return ktime_to_ns(ktime_get_boottime()); 215} 216 217static inline u64 ktime_get_tai_ns(void) 218{ 219 return ktime_to_ns(ktime_get_clocktai()); 220} 221 222static inline u64 ktime_get_raw_ns(void) 223{ 224 return ktime_to_ns(ktime_get_raw()); 225} 226 227extern u64 ktime_get_mono_fast_ns(void); 228extern u64 ktime_get_raw_fast_ns(void); 229 230/* 231 * Timespec interfaces utilizing the ktime based ones 232 */ 233static inline void get_monotonic_boottime(struct timespec *ts) 234{ 235 *ts = ktime_to_timespec(ktime_get_boottime()); 236} 237 238static inline void get_monotonic_boottime64(struct timespec64 *ts) 239{ 240 *ts = ktime_to_timespec64(ktime_get_boottime()); 241} 242 243static inline void timekeeping_clocktai(struct timespec *ts) 244{ 245 *ts = ktime_to_timespec(ktime_get_clocktai()); 246} 247 248/* 249 * RTC specific 250 */ 251extern bool timekeeping_rtc_skipsuspend(void); 252extern bool timekeeping_rtc_skipresume(void); 253 254extern void timekeeping_inject_sleeptime64(struct timespec64 *delta); 255 256/* 257 * PPS accessor 258 */ 259extern void getnstime_raw_and_real(struct timespec *ts_raw, 260 struct timespec *ts_real); 261 262/* 263 * Persistent clock related interfaces 264 */ 265extern int persistent_clock_is_local; 266 267extern void read_persistent_clock(struct timespec *ts); 268extern void read_persistent_clock64(struct timespec64 *ts); 269extern void read_boot_clock(struct timespec *ts); 270extern void read_boot_clock64(struct timespec64 *ts); 271extern int update_persistent_clock(struct timespec now); 272extern int update_persistent_clock64(struct timespec64 now); 273 274 275#endif 276