diff options
Diffstat (limited to 'include/linux')
| -rw-r--r-- | include/linux/timex.h | 23 |
1 files changed, 23 insertions, 0 deletions
diff --git a/include/linux/timex.h b/include/linux/timex.h index 74fdd07d3792..7e050a2cc35b 100644 --- a/include/linux/timex.h +++ b/include/linux/timex.h @@ -260,6 +260,29 @@ extern long pps_calcnt; /* calibration intervals */ extern long pps_errcnt; /* calibration errors */ extern long pps_stbcnt; /* stability limit exceeded */ +/** + * ntp_clear - Clears the NTP state variables + * + * Must be called while holding a write on the xtime_lock + */ +static inline void ntp_clear(void) +{ + time_adjust = 0; /* stop active adjtime() */ + time_status |= STA_UNSYNC; + time_maxerror = NTP_PHASE_LIMIT; + time_esterror = NTP_PHASE_LIMIT; +} + +/** + * ntp_synced - Returns 1 if the NTP status is not UNSYNC + * + */ +static inline int ntp_synced(void) +{ + return !(time_status & STA_UNSYNC); +} + + #ifdef CONFIG_TIME_INTERPOLATION #define TIME_SOURCE_CPU 0 |