| Subject: timekeeping: Delay update of clock->cycle_last |
| From: Thomas Gleixner <tglx@linutronix.de> |
| Date: Sat, 16 Feb 2013 00:06:18 +0100 |
| |
| 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 <tglx@linutronix.de> |
| --- |
| kernel/time/timekeeping.c | 4 +++- |
| 1 file changed, 3 insertions(+), 1 deletion(-) |
| |
| --- a/kernel/time/timekeeping.c |
| +++ b/kernel/time/timekeeping.c |
| @@ -1095,7 +1095,7 @@ static cycle_t logarithmic_accumulation( |
| |
| /* 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); |
| @@ -1210,6 +1210,8 @@ 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: |
