From mboxrd@z Thu Jan 1 00:00:00 1970 From: Steven Rostedt Subject: [PATCH RT 1/4] hrtimer: Raise softirq if hrtimer irq stalled Date: Tue, 30 Oct 2012 20:32:59 -0400 Message-ID: <20121031003314.510366648@goodmis.org> References: <20121031003258.811955127@goodmis.org> Cc: Thomas Gleixner , Carsten Emde , John Kacur To: linux-kernel@vger.kernel.org, linux-rt-users Return-path: Content-Disposition: inline; filename=0001-hrtimer-Raise-softirq-if-hrtimer-irq-stalled.patch Sender: linux-kernel-owner@vger.kernel.org List-Id: linux-rt-users.vger.kernel.org From: Watanabe When the hrtimer stall detection hits the softirq is not raised. Signed-off-by: Thomas Gleixner 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