timers: split process wide cpu clocks/timers, fix
To decrease the chance of a missed enable, always enable the timer when we
sample it, we'll always disable it when we find that there are no active timers
in the jiffy tick.
This fixes a flood of warnings reported by Mike Galbraith.
Reported-by: Mike Galbraith <efault@gmx.de>
Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
diff --git a/include/linux/sched.h b/include/linux/sched.h
index 7939291..5d10fa0 100644
--- a/include/linux/sched.h
+++ b/include/linux/sched.h
@@ -2209,6 +2209,7 @@
unsigned long flags;
spin_lock_irqsave(&cputimer->lock, flags);
+ cputimer->running = 1;
*times = cputimer->cputime;
spin_unlock_irqrestore(&cputimer->lock, flags);
}