centos man page for wait_for_completion

WAIT_FOR_COMPLETION(9)						   Driver Basics					    WAIT_FOR_COMPLETION(9)

NAME
       wait_for_completion - waits for completion of a task

SYNOPSIS
       void __sched wait_for_completion(struct completion * x);

ARGUMENTS
       x
	   holds the state of this particular completion

DESCRIPTION
       This waits to be signaled for completion of a specific task. It is NOT interruptible and there is no timeout.

       See also similar routines (i.e.	wait_for_completion_timeout) with timeout and interrupt capability. Also see complete.

COPYRIGHT
Kernel Hackers Manual 3.10					     June 2014						    WAIT_FOR_COMPLETION(9)