wait_event_interruptible_lock_irq_timeout — sleep until a condition gets true or a timeout elapses. The condition is checked under the lock. This is expected to be called with the lock taken.
wait_event_interruptible_lock_irq_timeout ( | wq, |
| condition, | |
| lock, | |
timeout); |
wqthe waitqueue to wait on
conditiona C expression for the event to wait for
lock
a locked spinlock_t, which will be released before schedule
and reacquired afterwards.
timeouttimeout, in jiffies
The process is put to sleep (TASK_INTERRUPTIBLE) until the
condition evaluates to true or signal is received. The condition is
checked each time the waitqueue wq is woken up.
wake_up has to be called after changing any variable that could
change the result of the wait condition.
This is supposed to be called while holding the lock. The lock is dropped before going to sleep and is reacquired afterwards.
The function returns 0 if the timeout elapsed, -ERESTARTSYS if it
was interrupted by a signal, and the remaining jiffies otherwise
if the condition evaluated to true before the timeout elapsed.