schedule_hrtimeout(9) [centos man page]

SCHEDULE_HRTIMEOUT(9)						   Driver Basics					     SCHEDULE_HRTIMEOUT(9)

NAME

       schedule_hrtimeout - sleep until timeout

SYNOPSIS

       int __sched schedule_hrtimeout(ktime_t * expires, const enum hrtimer_mode mode);

ARGUMENTS

       expires
	   timeout value (ktime_t)

       mode
	   timer mode, HRTIMER_MODE_ABS or HRTIMER_MODE_REL

DESCRIPTION

       Make the current task sleep until the given expiry time has elapsed. The routine will return immediately unless the current task state has
       been set (see set_current_state).

       You can set the task state as follows -

       TASK_UNINTERRUPTIBLE - at least timeout time is guaranteed to pass before the routine returns.

       TASK_INTERRUPTIBLE - the routine may return early if a signal is delivered to the current task.

       The current task state is guaranteed to be TASK_RUNNING when this routine returns.

       Returns 0 when the timer has expired otherwise -EINTR

COPYRIGHT

Kernel Hackers Manual 3.10					     June 2014						     SCHEDULE_HRTIMEOUT(9)

STRUCT 
HRTIMER(9)						   Driver Basics						 STRUCT HRTIMER(9)

NAME

       struct_hrtimer - the basic hrtimer structure

SYNOPSIS

       struct hrtimer {
	 struct timerqueue_node node;
	 ktime_t _softexpires;
	 enum hrtimer_restart	     (* function) (struct hrtimer *);
	 struct hrtimer_clock_base * base;
	 unsigned long state;
       #ifdef CONFIG_TIMER_STATS
	 int start_pid;
	 void * start_site;
	 char start_comm[16];
       #endif
       };

MEMBERS

       node
	   timerqueue node, which also manages node.expires, the absolute expiry time in the hrtimers internal representation. The time is related
	   to the clock on which the timer is based. Is setup by adding slack to the _softexpires value. For non range timers identical to
	   _softexpires.

       _softexpires
	   the absolute earliest expiry time of the hrtimer. The time which was given as expiry time when the timer was armed.

       function
	   timer expiry callback function

       base
	   pointer to the timer base (per cpu and per clock)

       state
	   state information (See bit values above)

       start_pid
	   timer statistics field to store the pid of the task which started the timer

       start_site
	   timer statistics field to store the site where the timer was started

       start_comm[16]
	   timer statistics field to store the name of the process which started the timer

DESCRIPTION

       The hrtimer structure must be initialized by hrtimer_init

COPYRIGHT

Kernel Hackers Manual 3.10					     June 2014							 STRUCT HRTIMER(9)