[PATCH RT 1/4] hrtimer: Raise softirq if hrtimer irq stalled

[Steven Rostedt <rostedt@goodmis.org>]

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From: Watanabe <shunsuke.watanabe@tel.com>

When the hrtimer stall detection hits the softirq is not raised.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: stable-rt@vger.kernel.org
---
 kernel/hrtimer.c |    9 ++++-----
 1 file changed, 4 insertions(+), 5 deletions(-)

diff --git a/kernel/hrtimer.c b/kernel/hrtimer.c
index 7327846..87b4917 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