1 #ifndef _LINUX_TIMEKEEPING_H 2 #define _LINUX_TIMEKEEPING_H 3 4 /* Included from linux/ktime.h */ 5 6 void timekeeping_init(void); 7 extern int timekeeping_suspended; 8 9 /* 10 * Get and set timeofday 11 */ 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); 16 17 /* 18 * Kernel time accessors 19 */ 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); 24 25 /* 26 * timespec based interfaces 27 */ 28 struct timespec64 get_monotonic_coarse64(void); 29 extern void getrawmonotonic64(struct timespec64 *ts); 30 extern void ktime_get_ts64(struct timespec64 *ts); 31 extern time64_t ktime_get_seconds(void); 32 extern time64_t ktime_get_real_seconds(void); 33 34 extern int __getnstimeofday64(struct timespec64 *tv); 35 extern void getnstimeofday64(struct timespec64 *tv); 36 extern void getboottime64(struct timespec64 *ts); 37 38 #if BITS_PER_LONG == 64 39 /** 40 * Deprecated. Use do_settimeofday64(). 41 */ 42 static inline int do_settimeofday(const struct timespec *ts) 43 { 44 return do_settimeofday64(ts); 45 } 46 47 static inline int __getnstimeofday(struct timespec *ts) 48 { 49 return __getnstimeofday64(ts); 50 } 51 52 static inline void getnstimeofday(struct timespec *ts) 53 { 54 getnstimeofday64(ts); 55 } 56 57 static inline void ktime_get_ts(struct timespec *ts) 58 { 59 ktime_get_ts64(ts); 60 } 61 62 static inline void ktime_get_real_ts(struct timespec *ts) 63 { 64 getnstimeofday64(ts); 65 } 66 67 static inline void getrawmonotonic(struct timespec *ts) 68 { 69 getrawmonotonic64(ts); 70 } 71 72 static inline struct timespec get_monotonic_coarse(void) 73 { 74 return get_monotonic_coarse64(); 75 } 76 77 static inline void getboottime(struct timespec *ts) 78 { 79 return getboottime64(ts); 80 } 81 #else 82 /** 83 * Deprecated. Use do_settimeofday64(). 84 */ 85 static 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 93 static 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 } 101 102 static inline void getnstimeofday(struct timespec *ts) 103 { 104 struct timespec64 ts64; 105 106 getnstimeofday64(&ts64); 107 *ts = timespec64_to_timespec(ts64); 108 } 109 110 static 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 } 117 118 static 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 } 125 126 static inline void getrawmonotonic(struct timespec *ts) 127 { 128 struct timespec64 ts64; 129 130 getrawmonotonic64(&ts64); 131 *ts = timespec64_to_timespec(ts64); 132 } 133 134 static inline struct timespec get_monotonic_coarse(void) 135 { 136 return timespec64_to_timespec(get_monotonic_coarse64()); 137 } 138 139 static 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 */ 154 155 enum tk_offsets { 156 TK_OFFS_REAL, 157 TK_OFFS_BOOT, 158 TK_OFFS_TAI, 159 TK_OFFS_MAX, 160 }; 161 162 extern ktime_t ktime_get(void); 163 extern ktime_t ktime_get_with_offset(enum tk_offsets offs); 164 extern ktime_t ktime_mono_to_any(ktime_t tmono, enum tk_offsets offs); 165 extern ktime_t ktime_get_raw(void); 166 extern u32 ktime_get_resolution_ns(void); 167 168 /** 169 * ktime_get_real - get the real (wall-) time in ktime_t format 170 */ 171 static inline ktime_t ktime_get_real(void) 172 { 173 return ktime_get_with_offset(TK_OFFS_REAL); 174 } 175 176 /** 177 * ktime_get_boottime - Returns monotonic time since boot in ktime_t format 178 * 179 * This is similar to CLOCK_MONTONIC/ktime_get, but also includes the 180 * time spent in suspend. 181 */ 182 static inline ktime_t ktime_get_boottime(void) 183 { 184 return ktime_get_with_offset(TK_OFFS_BOOT); 185 } 186 187 /** 188 * ktime_get_clocktai - Returns the TAI time of day in ktime_t format 189 */ 190 static inline ktime_t ktime_get_clocktai(void) 191 { 192 return ktime_get_with_offset(TK_OFFS_TAI); 193 } 194 195 /** 196 * ktime_mono_to_real - Convert monotonic time to clock realtime 197 */ 198 static inline ktime_t ktime_mono_to_real(ktime_t mono) 199 { 200 return ktime_mono_to_any(mono, TK_OFFS_REAL); 201 } 202 203 static inline u64 ktime_get_ns(void) 204 { 205 return ktime_to_ns(ktime_get()); 206 } 207 208 static inline u64 ktime_get_real_ns(void) 209 { 210 return ktime_to_ns(ktime_get_real()); 211 } 212 213 static inline u64 ktime_get_boot_ns(void) 214 { 215 return ktime_to_ns(ktime_get_boottime()); 216 } 217 218 static inline u64 ktime_get_tai_ns(void) 219 { 220 return ktime_to_ns(ktime_get_clocktai()); 221 } 222 223 static inline u64 ktime_get_raw_ns(void) 224 { 225 return ktime_to_ns(ktime_get_raw()); 226 } 227 228 extern u64 ktime_get_mono_fast_ns(void); 229 extern u64 ktime_get_raw_fast_ns(void); 230 231 /* 232 * Timespec interfaces utilizing the ktime based ones 233 */ 234 static inline void get_monotonic_boottime(struct timespec *ts) 235 { 236 *ts = ktime_to_timespec(ktime_get_boottime()); 237 } 238 239 static inline void get_monotonic_boottime64(struct timespec64 *ts) 240 { 241 *ts = ktime_to_timespec64(ktime_get_boottime()); 242 } 243 244 static inline void timekeeping_clocktai(struct timespec *ts) 245 { 246 *ts = ktime_to_timespec(ktime_get_clocktai()); 247 } 248 249 /* 250 * RTC specific 251 */ 252 extern bool timekeeping_rtc_skipsuspend(void); 253 extern bool timekeeping_rtc_skipresume(void); 254 255 extern void timekeeping_inject_sleeptime64(struct timespec64 *delta); 256 257 /* 258 * PPS accessor 259 */ 260 extern void getnstime_raw_and_real(struct timespec *ts_raw, 261 struct timespec *ts_real); 262 263 /* 264 * Persistent clock related interfaces 265 */ 266 extern int persistent_clock_is_local; 267 268 extern void read_persistent_clock(struct timespec *ts); 269 extern void read_persistent_clock64(struct timespec64 *ts); 270 extern void read_boot_clock64(struct timespec64 *ts); 271 extern int update_persistent_clock(struct timespec now); 272 extern int update_persistent_clock64(struct timespec64 now); 273 274 275 #endif 276