From: Thomas Gleixner Date: Thu, 21 Feb 2013 22:51:39 +0000 (+0000) Subject: timekeeping: Delay update of clock->cycle_last X-Git-Url: http://git.mmlx.us/?a=commitdiff_plain;h=7ec98e15aa049b7a2ca73485f31cf4f90c34e2dd;p=linux-edison.git timekeeping: Delay update of clock->cycle_last For calculating the new timekeeper values store the new cycle_last value in the timekeeper and update the clock->cycle_last just when we actually update the new values. Signed-off-by: Thomas Gleixner Signed-off-by: John Stultz --- diff --git a/kernel/time/timekeeping.c b/kernel/time/timekeeping.c index 4c276b2d022..38ac782c0ef 100644 --- a/kernel/time/timekeeping.c +++ b/kernel/time/timekeeping.c @@ -1271,7 +1271,7 @@ static cycle_t logarithmic_accumulation(struct timekeeper *tk, cycle_t offset, /* Accumulate one shifted interval */ offset -= interval; - tk->clock->cycle_last += interval; + tk->cycle_last += interval; tk->xtime_nsec += tk->xtime_interval << shift; accumulate_nsecs_to_secs(tk); @@ -1386,6 +1386,8 @@ static void update_wall_time(void) */ accumulate_nsecs_to_secs(tk); + /* Update clock->cycle_last with the new value */ + clock->cycle_last = tk->cycle_last; timekeeping_update(tk, false); out: