'\" t
.\"     Title: add_timer
.\"    Author: [FIXME: author] [see http://docbook.sf.net/el/author]
.\" Generator: DocBook XSL Stylesheets v1.78.1 <http://docbook.sf.net/>
.\"      Date: January 2017
.\"    Manual: Driver Basics
.\"    Source: Kernel Hackers Manual 4.8.15
.\"  Language: English
.\"
.TH "ADD_TIMER" "9" "January 2017" "Kernel Hackers Manual 4\&.8\&." "Driver Basics"
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.SH "NAME"
add_timer \- start a timer
.SH "SYNOPSIS"
.HP \w'void\ add_timer('u
.BI "void add_timer(struct\ timer_list\ *\ " "timer" ");"
.SH "ARGUMENTS"
.PP
\fItimer\fR
.RS 4
the timer to be added
.RE
.SH "DESCRIPTION"
.PP
The kernel will do a \->function(\->data) callback from the timer interrupt at the \->expires point in the future\&. The current time is \*(Aqjiffies\*(Aq\&.
.PP
The timer\*(Aqs \->expires, \->function (and if the handler uses it, \->data) fields must be set prior calling this function\&.
.PP
Timers with an \->expires field in the past will be executed in the next timer tick\&.
.SH "COPYRIGHT"
.br