From: Watanabe <shunsuke.watanabe@xxxxxxx>
When the hrtimer stall detection hits the softirq is not raised.
Signed-off-by: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
Cc: stable-rt@xxxxxxxxxxxxxxx
---
kernel/hrtimer.c | 9 ++++-----
1 file changed, 4 insertions(+), 5 deletions(-)
diff --git a/kernel/hrtimer.c b/kernel/hrtimer.c
index 8b3d423..9114899 100644
--- a/kernel/hrtimer.c
+++ b/kernel/hrtimer.c
@@ -1527,11 +1527,7 @@ retry:
if (expires_next.tv64 == KTIME_MAX ||
!tick_program_event(expires_next, 0)) {
cpu_base->hang_detected = 0;
-
- if (raise)
- raise_softirq_irqoff(HRTIMER_SOFTIRQ);
-
- return;
+ goto out;
}
/*
@@ -1575,6 +1571,9 @@ retry:
tick_program_event(expires_next, 1);
printk_once(KERN_WARNING "hrtimer: interrupt took %llu ns\n",
ktime_to_ns(delta));
+out:
+ if (raise)
+ raise_softirq_irqoff(HRTIMER_SOFTIRQ);
}
/*
--
1.7.10.4
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