centos man page for wait_for_completion_killable_timeout

WAIT_FOR_COMPLETION_(9) 					   Driver Basics					   WAIT_FOR_COMPLETION_(9)

NAME
       wait_for_completion_killable_timeout - waits for completion of a task (w/(to,killable))

SYNOPSIS
       long __sched wait_for_completion_killable_timeout(struct completion * x, unsigned long timeout);

ARGUMENTS
       x
	   holds the state of this particular completion

       timeout
	   timeout value in jiffies

DESCRIPTION
       This waits for either a completion of a specific task to be signaled or for a specified timeout to expire. It can be interrupted by a kill
       signal. The timeout is in jiffies.

RETURN
       -ERESTARTSYS if interrupted, 0 if timed out, positive (at least 1, or number of jiffies left till timeout) if completed.

COPYRIGHT
Kernel Hackers Manual 3.10					     June 2014						   WAIT_FOR_COMPLETION_(9)