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| author | John Stultz <john.stultz@linaro.org> | 2012-03-22 19:14:46 -0700 |
|---|---|---|
| committer | John Stultz <john.stultz@linaro.org> | 2012-03-23 16:25:16 -0700 |
| commit | e919cfd42da54d400e7e0385f22cae3672dcf874 (patch) | |
| tree | 2fad9b552439188e2e48b0d3b0cacce52dc71b95 /kernel/time | |
| parent | ad30dfa94c5cc23931c822922a50bd163ab293a5 (diff) | |
| download | blackbird-op-linux-e919cfd42da54d400e7e0385f22cae3672dcf874.tar.gz blackbird-op-linux-e919cfd42da54d400e7e0385f22cae3672dcf874.zip | |
time: Avoid scary backtraces when warning of > 11% adj
Folks have been getting a number of warnings about time
adjustments > 11%. The WARN_ON leaves a big useless backtrace
so this patch removes it for a printk_once().
I'm still working to narrow down the cause of the > 11% adjustment.
Signed-off-by: John Stultz <john.stultz@linaro.org>
Diffstat (limited to 'kernel/time')
| -rw-r--r-- | kernel/time/timekeeping.c | 10 |
1 files changed, 6 insertions, 4 deletions
diff --git a/kernel/time/timekeeping.c b/kernel/time/timekeeping.c index 5d76e09ddd3d..16a175bed355 100644 --- a/kernel/time/timekeeping.c +++ b/kernel/time/timekeeping.c @@ -869,13 +869,15 @@ static void timekeeping_adjust(s64 offset) } else /* No adjustment needed */ return; - WARN_ONCE(timekeeper.clock->maxadj && - (timekeeper.mult + adj > timekeeper.clock->mult + - timekeeper.clock->maxadj), - "Adjusting %s more then 11%% (%ld vs %ld)\n", + if (unlikely(timekeeper.clock->maxadj && + (timekeeper.mult + adj > + timekeeper.clock->mult + timekeeper.clock->maxadj))) { + printk_once(KERN_WARNING + "Adjusting %s more than 11%% (%ld vs %ld)\n", timekeeper.clock->name, (long)timekeeper.mult + adj, (long)timekeeper.clock->mult + timekeeper.clock->maxadj); + } /* * So the following can be confusing. * |
