centos man page for add_timer

ADD_TIMER(9)							   Driver Basics						      ADD_TIMER(9)

NAME
       add_timer - start a timer

SYNOPSIS
       void add_timer(struct timer_list * timer);

ARGUMENTS
       timer
	   the timer to be added

DESCRIPTION
       The kernel will do a ->function(->data) callback from the timer interrupt at the ->expires point in the future. The current time is
       'jiffies'.

       The timer's ->expires, ->function (and if the handler uses it, ->data) fields must be set prior calling this function.

       Timers with an ->expires field in the past will be executed in the next timer tick.

COPYRIGHT
Kernel Hackers Manual 3.10					     June 2014							      ADD_TIMER(9)