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| author | Alexander Gordeev <agordeev@redhat.com> | 2012-03-09 14:59:40 +0100 |
|---|---|---|
| committer | Thomas Gleixner <tglx@linutronix.de> | 2012-03-09 17:19:08 +0100 |
| commit | 05d74efa3c72a5c40b0edeb15856c0230126313b (patch) | |
| tree | cac8c177adbf67f3b9234341da2516fff51a50ff /kernel/irq | |
| parent | 4bcdf1d0b652bc33d52f2322b77463e4dc58abf8 (diff) | |
| download | op-kernel-dev-05d74efa3c72a5c40b0edeb15856c0230126313b.zip op-kernel-dev-05d74efa3c72a5c40b0edeb15856c0230126313b.tar.gz | |
genirq: No need to check IRQTF_DIED before stopping a thread handler
Since 63706172f332fd3f6e7458ebfb35fa6de9c21dc5 kthread_stop() is not
afraid of dead kernel threads. So no need to check if a thread is
alive before stopping it. These checks still were racy.
Reported-by: Oleg Nesterov <oleg@redhat.com>
Signed-off-by: Alexander Gordeev <agordeev@redhat.com>
Link: http://lkml.kernel.org/r/20120309135939.GC2114@dhcp-26-207.brq.redhat.com
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Diffstat (limited to 'kernel/irq')
| -rw-r--r-- | kernel/irq/manage.c | 6 |
1 files changed, 2 insertions, 4 deletions
diff --git a/kernel/irq/manage.c b/kernel/irq/manage.c index 0fa3ce9..3feab4a 100644 --- a/kernel/irq/manage.c +++ b/kernel/irq/manage.c @@ -1106,8 +1106,7 @@ out_thread: struct task_struct *t = new->thread; new->thread = NULL; - if (likely(!test_bit(IRQTF_DIED, &new->thread_flags))) - kthread_stop(t); + kthread_stop(t); put_task_struct(t); } out_mput: @@ -1217,8 +1216,7 @@ static struct irqaction *__free_irq(unsigned int irq, void *dev_id) #endif if (action->thread) { - if (!test_bit(IRQTF_DIED, &action->thread_flags)) - kthread_stop(action->thread); + kthread_stop(action->thread); put_task_struct(action->thread); } |
