centos man page for wait_event

WAIT_EVENT(9)							   Driver Basics						     WAIT_EVENT(9)

NAME
       wait_event - sleep until a condition gets true

SYNOPSIS
       wait_event(wq, condition);

ARGUMENTS
       wq
	   the waitqueue to wait on

       condition
	   a C expression for the event to wait for

DESCRIPTION
       The process is put to sleep (TASK_UNINTERRUPTIBLE) until the condition evaluates to true. 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.

COPYRIGHT
Kernel Hackers Manual 3.10					     June 2014							     WAIT_EVENT(9)