'\" t
.\"     Title: wait_on_atomic_t
.\"    Author: [FIXME: author] [see http://docbook.sf.net/el/author]
.\" Generator: DocBook XSL Stylesheets v1.78.1 <http://docbook.sf.net/>
.\"      Date: May 2018
.\"    Manual: Driver Basics
.\"    Source: Kernel Hackers Manual 3.16.56
.\"  Language: English
.\"
.TH "WAIT_ON_ATOMIC_T" "9" "May 2018" "Kernel Hackers Manual 3\&.16\&" "Driver Basics"
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.SH "NAME"
wait_on_atomic_t \- Wait for an atomic_t to become 0
.SH "SYNOPSIS"
.HP \w'int\ wait_on_atomic_t('u
.BI "int wait_on_atomic_t(atomic_t\ *\ " "val" ", int\ (*" "action" ")\ (atomic_t\ *), unsigned\ " "mode" ");"
.SH "ARGUMENTS"
.PP
\fIval\fR
.RS 4
The atomic value being waited on, a kernel virtual address
.RE
.PP
\fIaction\fR
.RS 4
the function used to sleep, which may take special actions
.RE
.PP
\fImode\fR
.RS 4
the task state to sleep in
.RE
.SH "DESCRIPTION"
.PP
Wait for an atomic_t to become 0\&. We abuse the bit\-wait waitqueue table for the purpose of getting a waitqueue, but we set the key to a bit number outside of the target \*(Aqword\*(Aq\&.
.SH "COPYRIGHT"
.br