From: John Stultz Date: Wed, 10 Apr 2013 19:41:49 +0000 (-0700) Subject: timekeeping: Make sure to notify hrtimers when TAI offset changes X-Git-Tag: firefly_0821_release~3680^2~653^2~10 X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=4e8f8b34b92b6514cc070aeb94d317cadd5071d7;p=firefly-linux-kernel-4.4.55.git timekeeping: Make sure to notify hrtimers when TAI offset changes Now that we have CLOCK_TAI timers, make sure we notify hrtimer code when TAI offset is changed. Signed-off-by: John Stultz Link: http://lkml.kernel.org/r/1365622909-953-1-git-send-email-john.stultz@linaro.org Signed-off-by: Thomas Gleixner --- diff --git a/kernel/time/timekeeping.c b/kernel/time/timekeeping.c index c4d2a8751f3e..675f720a848b 100644 --- a/kernel/time/timekeeping.c +++ b/kernel/time/timekeeping.c @@ -607,6 +607,7 @@ void timekeeping_set_tai_offset(s32 tai_offset) __timekeeping_set_tai_offset(tk, tai_offset); write_seqcount_end(&timekeeper_seq); raw_spin_unlock_irqrestore(&timekeeper_lock, flags); + clock_was_set(); } /** @@ -1639,7 +1640,7 @@ int do_adjtimex(struct timex *txc) struct timekeeper *tk = &timekeeper; unsigned long flags; struct timespec ts; - s32 tai; + s32 orig_tai, tai; int ret; /* Validate the data before disabling interrupts */ @@ -1663,10 +1664,13 @@ int do_adjtimex(struct timex *txc) raw_spin_lock_irqsave(&timekeeper_lock, flags); write_seqcount_begin(&timekeeper_seq); - tai = tk->tai_offset; + orig_tai = tai = tk->tai_offset; ret = __do_adjtimex(txc, &ts, &tai); - __timekeeping_set_tai_offset(tk, tai); + if (tai != orig_tai) { + __timekeeping_set_tai_offset(tk, tai); + clock_was_set_delayed(); + } write_seqcount_end(&timekeeper_seq); raw_spin_unlock_irqrestore(&timekeeper_lock, flags);