'\" t
.\"     Title: wait_event_interruptible_locked_irq
.\"    Author: [FIXME: author] [see http://docbook.sf.net/el/author]
.\" Generator: DocBook XSL Stylesheets v1.79.1 <http://docbook.sf.net/>
.\"      Date: January 2017
.\"    Manual: Driver Basics
.\"    Source: Kernel Hackers Manual 4.8.15
.\"  Language: English
.\"
.TH "WAIT_EVENT_INTERRUPT" "9" "January 2017" "Kernel Hackers Manual 4\&.8\&." "Driver Basics"
.\" -----------------------------------------------------------------
.\" * Define some portability stuff
.\" -----------------------------------------------------------------
.\" ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
.\" http://bugs.debian.org/507673
.\" http://lists.gnu.org/archive/html/groff/2009-02/msg00013.html
.\" ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
.ie \n(.g .ds Aq \(aq
.el       .ds Aq '
.\" -----------------------------------------------------------------
.\" * set default formatting
.\" -----------------------------------------------------------------
.\" disable hyphenation
.nh
.\" disable justification (adjust text to left margin only)
.ad l
.\" -----------------------------------------------------------------
.\" * MAIN CONTENT STARTS HERE *
.\" -----------------------------------------------------------------
.SH "NAME"
wait_event_interruptible_locked_irq \- sleep until a condition gets true
.SH "SYNOPSIS"
.HP \w'wait_event_interruptible_locked_irq('u
.BI "wait_event_interruptible_locked_irq(" "wq" ", " "condition" ");"
.SH "ARGUMENTS"
.PP
\fIwq\fR
.RS 4
the waitqueue to wait on
.RE
.PP
\fIcondition\fR
.RS 4
a C expression for the event to wait for
.RE
.SH "DESCRIPTION"
.PP
The process is put to sleep (TASK_INTERRUPTIBLE) until the
\fIcondition\fR
evaluates to true or a signal is received\&. The
\fIcondition\fR
is checked each time the waitqueue
\fIwq\fR
is woken up\&.
.PP
It must be called with wq\&.lock being held\&. This spinlock is unlocked while sleeping but
\fIcondition\fR
testing is done while lock is held and when this macro exits the lock is held\&.
.PP
The lock is locked/unlocked using
\fBspin_lock_irq\fR/\fBspin_unlock_irq\fR
functions which must match the way they are locked/unlocked outside of this macro\&.
.PP
\fBwake_up_locked\fR
has to be called after changing any variable that could change the result of the wait condition\&.
.PP
The function will return \-ERESTARTSYS if it was interrupted by a signal and 0 if
\fIcondition\fR
evaluated to true\&.
.SH "COPYRIGHT"
.br