[PATCH RT 1/4] hrtimer: Raise softirq if hrtimer irq stalled
From: Steven Rostedt <rostedt@goodmis.org>
Date: 2012-10-31 00:33:21
Also in:
lkml
Subsystem:
the rest · Maintainer:
Linus Torvalds
From: Watanabe <redacted> When the hrtimer stall detection hits the softirq is not raised. Signed-off-by: Thomas Gleixner <redacted> 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