struct_hrtimer_sleeper(9) centos man page | unix.com

STRUCT 
HRTIMER_SLEEP(9) 					   Driver Basics					   STRUCT HRTIMER_SLEEP(9)

NAME
       struct_hrtimer_sleeper - simple sleeper structure

SYNOPSIS
       struct hrtimer_sleeper {
	 struct hrtimer timer;
	 struct task_struct * task;
       };

MEMBERS
       timer
	   embedded timer structure

       task
	   task to wake up

DESCRIPTION
       task is set to NULL, when the timer expires.

COPYRIGHT
Kernel Hackers Manual 3.10					     June 2014						   STRUCT HRTIMER_SLEEP(9)