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time: Move common updates to a function 

CC: Thomas Gleixner <tglx@linutronix.de>
CC: Eric Dumazet <eric.dumazet@gmail.com>
CC: Richard Cochran <richardcochran@gmail.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: John Stultz <john.stultz@linaro.org>
This commit is contained in:
Thomas Gleixner 2011-11-13 23:19:49 +00:00 committed by John Stultz
parent 058892e632
commit cc06268c6a
1 changed files with 17 additions and 22 deletions
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39
kernel/time/timekeeping.c
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@ -172,17 +172,26 @@ static inline s64 timekeeping_get_ns_raw(void)
return clocksource_cyc2ns(cycle_delta, clock->mult, clock->shift); 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) void timekeeping_leap_insert(int leapsecond)
{ {
unsigned long flags; unsigned long flags;
write_seqlock_irqsave(&timekeeper.lock, flags); write_seqlock_irqsave(&timekeeper.lock, flags);
timekeeper.xtime.tv_sec += leapsecond; timekeeper.xtime.tv_sec += leapsecond;
timekeeper.wall_to_monotonic.tv_sec -= leapsecond; timekeeper.wall_to_monotonic.tv_sec -= leapsecond;
update_vsyscall(&timekeeper.xtime, &timekeeper.wall_to_monotonic, timekeeping_update(false);
timekeeper.clock, timekeeper.mult);
write_sequnlock_irqrestore(&timekeeper.lock, flags); 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); timespec_sub(timekeeper.wall_to_monotonic, ts_delta);
timekeeper.xtime = *tv; timekeeper.xtime = *tv;
timekeeping_update(true);
timekeeper.ntp_error = 0;
ntp_clear();
update_vsyscall(&timekeeper.xtime, &timekeeper.wall_to_monotonic,
timekeeper.clock, timekeeper.mult);
write_sequnlock_irqrestore(&timekeeper.lock, flags); write_sequnlock_irqrestore(&timekeeper.lock, flags);
@ -425,11 +429,7 @@ int timekeeping_inject_offset(struct timespec *ts)
timekeeper.wall_to_monotonic = timekeeper.wall_to_monotonic =
timespec_sub(timekeeper.wall_to_monotonic, *ts); timespec_sub(timekeeper.wall_to_monotonic, *ts);
timekeeper.ntp_error = 0; timekeeping_update(true);
ntp_clear();
update_vsyscall(&timekeeper.xtime, &timekeeper.wall_to_monotonic,
timekeeper.clock, timekeeper.mult);
write_sequnlock_irqrestore(&timekeeper.lock, flags); write_sequnlock_irqrestore(&timekeeper.lock, flags);
@ -668,10 +668,7 @@ void timekeeping_inject_sleeptime(struct timespec *delta)
__timekeeping_inject_sleeptime(delta); __timekeeping_inject_sleeptime(delta);
timekeeper.ntp_error = 0; timekeeping_update(true);
ntp_clear();
update_vsyscall(&timekeeper.xtime, &timekeeper.wall_to_monotonic,
timekeeper.clock, timekeeper.mult);
write_sequnlock_irqrestore(&timekeeper.lock, flags); write_sequnlock_irqrestore(&timekeeper.lock, flags);
@ -1083,9 +1080,7 @@ static void update_wall_time(void)
second_overflow(); second_overflow();
} }
/* check to see if there is a new clocksource to use */ timekeeping_update(false);
update_vsyscall(&timekeeper.xtime, &timekeeper.wall_to_monotonic,
timekeeper.clock, timekeeper.mult);
out: out:
write_sequnlock_irqrestore(&timekeeper.lock, flags); write_sequnlock_irqrestore(&timekeeper.lock, flags);