diff options
author | Thomas Gleixner <tglx@linutronix.de> | 2011-11-13 23:19:49 +0000 |
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committer | John Stultz <john.stultz@linaro.org> | 2012-01-26 19:44:31 -0800 |
commit | cc06268c6a87db156af2daed6e96a936b955cc82 (patch) | |
tree | 7edfb767cf3a58b82c8ee299d3689943b87d1d3d /kernel/time/timekeeping.c | |
parent | 058892e632aa53be8255c2f0a42f9ace7bed66bb (diff) | |
download | op-kernel-dev-cc06268c6a87db156af2daed6e96a936b955cc82.zip op-kernel-dev-cc06268c6a87db156af2daed6e96a936b955cc82.tar.gz |
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>
Diffstat (limited to 'kernel/time/timekeeping.c')
-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 06f40ae..403c2a0 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); |