diff options
Diffstat (limited to 'kernel/time/timekeeping_internal.h')
| -rw-r--r-- | kernel/time/timekeeping_internal.h | 11 |
1 files changed, 7 insertions, 4 deletions
diff --git a/kernel/time/timekeeping_internal.h b/kernel/time/timekeeping_internal.h index 63e600e943a7..973ede670a36 100644 --- a/kernel/time/timekeeping_internal.h +++ b/kernel/time/timekeeping_internal.h @@ -30,19 +30,22 @@ static inline void timekeeping_inc_mg_floor_swaps(void) #endif -static inline u64 clocksource_delta(u64 now, u64 last, u64 mask) +static inline u64 clocksource_delta(u64 now, u64 last, u64 mask, u64 max_delta) { u64 ret = (now - last) & mask; /* - * Prevent time going backwards by checking the MSB of mask in - * the result. If set, return 0. + * Prevent time going backwards by checking the result against + * @max_delta. If greater, return 0. */ - return ret & ~(mask >> 1) ? 0 : ret; + return ret > max_delta ? 0 : ret; } /* Semi public for serialization of non timekeeper VDSO updates. */ unsigned long timekeeper_lock_irqsave(void); void timekeeper_unlock_irqrestore(unsigned long flags); +/* NTP specific interface to access the current seconds value */ +long ktime_get_ntp_seconds(unsigned int id); + #endif /* _TIMEKEEPING_INTERNAL_H */ |