diff options
Diffstat (limited to 'kernel/time')
-rw-r--r-- | kernel/time/timekeeping.c | 39 |
1 files changed, 17 insertions, 22 deletions
diff --git a/kernel/time/timekeeping.c b/kernel/time/timekeeping.c index 06f40ae13b7..403c2a09283 100644 --- a/kernel/time/timekeeping.c +++ b/kernel/time/timekeeping.c @@ -172,17 +172,26 @@ static inline s64 timekeeping_get_ns_raw(void) return clocksource_cyc2ns(cycle_delta, clock->mult, clock->shift); } +/* must hold write on timekeeper.lock */ +static void timekeeping_update(bool clearntp) +{ + if (clearntp) { + timekeeper.ntp_error = 0; + ntp_clear(); + } + update_vsyscall(&timekeeper.xtime, &timekeeper.wall_to_monotonic, + timekeeper.clock, timekeeper.mult); +} + + void timekeeping_leap_insert(int leapsecond) { unsigned long flags; write_seqlock_irqsave(&timekeeper.lock, flags); - timekeeper.xtime.tv_sec += leapsecond; timekeeper.wall_to_monotonic.tv_sec -= leapsecond; - update_vsyscall(&timekeeper.xtime, &timekeeper.wall_to_monotonic, - timekeeper.clock, timekeeper.mult); - + timekeeping_update(false); write_sequnlock_irqrestore(&timekeeper.lock, flags); } @@ -386,12 +395,7 @@ int do_settimeofday(const struct timespec *tv) timespec_sub(timekeeper.wall_to_monotonic, ts_delta); timekeeper.xtime = *tv; - - timekeeper.ntp_error = 0; - ntp_clear(); - - update_vsyscall(&timekeeper.xtime, &timekeeper.wall_to_monotonic, - timekeeper.clock, timekeeper.mult); + timekeeping_update(true); write_sequnlock_irqrestore(&timekeeper.lock, flags); @@ -425,11 +429,7 @@ int timekeeping_inject_offset(struct timespec *ts) timekeeper.wall_to_monotonic = timespec_sub(timekeeper.wall_to_monotonic, *ts); - timekeeper.ntp_error = 0; - ntp_clear(); - - update_vsyscall(&timekeeper.xtime, &timekeeper.wall_to_monotonic, - timekeeper.clock, timekeeper.mult); + timekeeping_update(true); write_sequnlock_irqrestore(&timekeeper.lock, flags); @@ -668,10 +668,7 @@ void timekeeping_inject_sleeptime(struct timespec *delta) __timekeeping_inject_sleeptime(delta); - timekeeper.ntp_error = 0; - ntp_clear(); - update_vsyscall(&timekeeper.xtime, &timekeeper.wall_to_monotonic, - timekeeper.clock, timekeeper.mult); + timekeeping_update(true); write_sequnlock_irqrestore(&timekeeper.lock, flags); @@ -1083,9 +1080,7 @@ static void update_wall_time(void) second_overflow(); } - /* check to see if there is a new clocksource to use */ - update_vsyscall(&timekeeper.xtime, &timekeeper.wall_to_monotonic, - timekeeper.clock, timekeeper.mult); + timekeeping_update(false); out: write_sequnlock_irqrestore(&timekeeper.lock, flags); |