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| author | Sebastian Andrzej Siewior <bigeasy@linutronix.de> | 2019-02-12 17:25:54 +0100 |
|---|---|---|
| committer | Thomas Gleixner <tglx@linutronix.de> | 2019-02-28 11:18:38 +0100 |
| commit | ad01423aedaa7c6dd62d560b73a3cb39e6da3901 (patch) | |
| tree | 0c63d73a349d8c51b3de8b71440de07564a38221 /kernel/kthread.c | |
| parent | fe99a4f4d6022ec92f9b52a5528cb9b77513e7d1 (diff) | |
| download | lwn-ad01423aedaa7c6dd62d560b73a3cb39e6da3901.tar.gz lwn-ad01423aedaa7c6dd62d560b73a3cb39e6da3901.zip | |
kthread: Do not use TIMER_IRQSAFE
The TIMER_IRQSAFE usage was introduced in commit 22597dc3d97b1 ("kthread:
initial support for delayed kthread work") which modelled the delayed
kthread code after workqueue's code. The workqueue code requires the flag
TIMER_IRQSAFE for synchronisation purpose. This is not true for kthread's
delay timer since all operations occur under a lock.
Remove TIMER_IRQSAFE from the timer initialisation and use timer_setup()
for initialisation purpose which is the official function.
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Petr Mladek <pmladek@suse.com>
Link: https://lkml.kernel.org/r/20190212162554.19779-2-bigeasy@linutronix.de
Diffstat (limited to 'kernel/kthread.c')
| -rw-r--r-- | kernel/kthread.c | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/kernel/kthread.c b/kernel/kthread.c index 5641b55783a6..537335541267 100644 --- a/kernel/kthread.c +++ b/kernel/kthread.c @@ -835,6 +835,7 @@ void kthread_delayed_work_timer_fn(struct timer_list *t) struct kthread_delayed_work *dwork = from_timer(dwork, t, timer); struct kthread_work *work = &dwork->work; struct kthread_worker *worker = work->worker; + unsigned long flags; /* * This might happen when a pending work is reinitialized. @@ -843,7 +844,7 @@ void kthread_delayed_work_timer_fn(struct timer_list *t) if (WARN_ON_ONCE(!worker)) return; - raw_spin_lock(&worker->lock); + raw_spin_lock_irqsave(&worker->lock, flags); /* Work must not be used with >1 worker, see kthread_queue_work(). */ WARN_ON_ONCE(work->worker != worker); @@ -852,7 +853,7 @@ void kthread_delayed_work_timer_fn(struct timer_list *t) list_del_init(&work->node); kthread_insert_work(worker, work, &worker->work_list); - raw_spin_unlock(&worker->lock); + raw_spin_unlock_irqrestore(&worker->lock, flags); } EXPORT_SYMBOL(kthread_delayed_work_timer_fn); |