[GIT pull] hrtimer fixes

From: Thomas Gleixner
Date: Sun Apr 27 2008 - 13:51:03 EST


Linus,

please pull hrtimer fixes from:

ssh://master.kernel.org/pub/scm/linux/kernel/git/tglx/linux-2.6-hrt.git master

This fixes a long standing hrtimer reprogramming bug.

Thanks,
tglx
---
Bodo Stroesser (1):
hrtimer: timeout too long when using HRTIMER_CB_SOFTIRQ

kernel/hrtimer.c | 15 +++++++++++++--
1 files changed, 13 insertions(+), 2 deletions(-)
diff --git a/kernel/hrtimer.c b/kernel/hrtimer.c
index f78777a..e379ef0 100644
--- a/kernel/hrtimer.c
+++ b/kernel/hrtimer.c
@@ -1080,8 +1080,19 @@ static void run_hrtimer_pending(struct hrtimer_cpu_base *cpu_base)
* If the timer was rearmed on another CPU, reprogram
* the event device.
*/
- if (timer->base->first == &timer->node)
- hrtimer_reprogram(timer, timer->base);
+ struct hrtimer_clock_base *base = timer->base;
+
+ if (base->first == &timer->node &&
+ hrtimer_reprogram(timer, base)) {
+ /*
+ * Timer is expired. Thus move it from tree to
+ * pending list again.
+ */
+ __remove_hrtimer(timer, base,
+ HRTIMER_STATE_PENDING, 0);
+ list_add_tail(&timer->cb_entry,
+ &base->cpu_base->cb_pending);
+ }
}
}
spin_unlock_irq(&cpu_base->lock);
--
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