WAIT_EVENT_INTERRUPT(9) Driver Basics WAIT_EVENT_INTERRUPT(9)NAMEwait_event_interruptible_lock_irq - sleep until a condition gets true.
The condition is checked under the lock. This is expected to be called
with the lock taken.
SYNOPSIS
wait_event_interruptible_lock_irq(wq, condition, lock);
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.
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 macro will return -ERESTARTSYS if it was interrupted by a signal
and 0 if condition evaluated to true.
COPYRIGHTKernel Hackers Manual 3.11 November 2013 WAIT_EVENT_INTERRUPT(9)
