diff options
Diffstat (limited to 'include/linux/timex.h')
-rw-r--r-- | include/linux/timex.h | 11 |
1 files changed, 9 insertions, 2 deletions
diff --git a/include/linux/timex.h b/include/linux/timex.h index db501dc23c29..da929dbbea2a 100644 --- a/include/linux/timex.h +++ b/include/linux/timex.h | |||
@@ -255,10 +255,10 @@ struct time_interpolator { | |||
255 | u8 jitter; /* if set compensate for fluctuations */ | 255 | u8 jitter; /* if set compensate for fluctuations */ |
256 | u32 nsec_per_cyc; /* set by register_time_interpolator() */ | 256 | u32 nsec_per_cyc; /* set by register_time_interpolator() */ |
257 | void *addr; /* address of counter or function */ | 257 | void *addr; /* address of counter or function */ |
258 | u64 mask; /* mask the valid bits of the counter */ | 258 | cycles_t mask; /* mask the valid bits of the counter */ |
259 | unsigned long offset; /* nsec offset at last update of interpolator */ | 259 | unsigned long offset; /* nsec offset at last update of interpolator */ |
260 | u64 last_counter; /* counter value in units of the counter at last update */ | 260 | u64 last_counter; /* counter value in units of the counter at last update */ |
261 | u64 last_cycle; /* Last timer value if TIME_SOURCE_JITTER is set */ | 261 | cycles_t last_cycle; /* Last timer value if TIME_SOURCE_JITTER is set */ |
262 | u64 frequency; /* frequency in counts/second */ | 262 | u64 frequency; /* frequency in counts/second */ |
263 | long drift; /* drift in parts-per-million (or -1) */ | 263 | long drift; /* drift in parts-per-million (or -1) */ |
264 | unsigned long skips; /* skips forward */ | 264 | unsigned long skips; /* skips forward */ |
@@ -286,6 +286,13 @@ static inline void time_interpolator_update(long delta_nsec) | |||
286 | 286 | ||
287 | #define TICK_LENGTH_SHIFT 32 | 287 | #define TICK_LENGTH_SHIFT 32 |
288 | 288 | ||
289 | #ifdef CONFIG_NO_HZ | ||
290 | #define NTP_INTERVAL_FREQ (2) | ||
291 | #else | ||
292 | #define NTP_INTERVAL_FREQ (HZ) | ||
293 | #endif | ||
294 | #define NTP_INTERVAL_LENGTH (NSEC_PER_SEC/NTP_INTERVAL_FREQ) | ||
295 | |||
289 | /* Returns how long ticks are at present, in ns / 2^(SHIFT_SCALE-10). */ | 296 | /* Returns how long ticks are at present, in ns / 2^(SHIFT_SCALE-10). */ |
290 | extern u64 current_tick_length(void); | 297 | extern u64 current_tick_length(void); |
291 | 298 | ||