wait_event_interruptible_lock_irq_timeout(9) 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.

SYNOPSIS

wait_event_interruptible_lock_irq_timeout(wq, condition, lock, timeout);

ARGUMENTS

wq

the waitqueue to wait on

condition

a C expression for the event to wait for

lock

a locked spinlock_t, which will be released before schedule and reacquired afterwards.

timeout

timeout, in jiffies

DESCRIPTION

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.

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