WAIT_EVENT_INTERRUPT(9) Driver Basics WAIT_EVENT_INTERRUPT(9)NAMEwait_event_interruptible_timeout - sleep until a condition gets true or
a timeout elapses
SYNOPSIS
wait_event_interruptible_timeout(wq, condition, timeout);
ARGUMENTS
wq
the waitqueue to wait on
condition
a C expression for the event to wait for
timeout
timeout, in jiffies
DESCRIPTION
The process is put to sleep (TASK_INTERRUPTIBLE) until the condition
evaluates to true or a 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.
RETURNS
0 if the timeout elapsed, -ERESTARTSYS if it was interrupted by a
signal, or the remaining jiffies (at least 1) if the condition
evaluated to true before the timeout elapsed.
COPYRIGHTKernel Hackers Manual 3.11 November 2013 WAIT_EVENT_INTERRUPT(9)