'\" t
.\"     Title: wait_task_stopped
.\"    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 "WAIT_TASK_STOPPED" "9" "January 2017" "Kernel Hackers Manual 4\&.8\&." "Driver Basics"
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.SH "NAME"
wait_task_stopped \- Wait for \fBTASK_STOPPED\fR or \fBTASK_TRACED\fR
.SH "SYNOPSIS"
.HP \w'int\ wait_task_stopped('u
.BI "int wait_task_stopped(struct\ wait_opts\ *\ " "wo" ", int\ " "ptrace" ", struct\ task_struct\ *\ " "p" ");"
.SH "ARGUMENTS"
.PP
\fIwo\fR
.RS 4
wait options
.RE
.PP
\fIptrace\fR
.RS 4
is the wait for ptrace
.RE
.PP
\fIp\fR
.RS 4
task to wait for
.RE
.SH "DESCRIPTION"
.PP
Handle
\fBsys_wait4\fR
work for
\fBp\fR
in state
\fBTASK_STOPPED\fR
or
\fBTASK_TRACED\fR\&.
.SH "CONTEXT"
.PP
read_lock(tasklist_lock), which is released if return value is non\-zero\&. Also, grabs and releases
\fIp\fR\->sighand\->siglock\&.
.SH "RETURN"
.PP
0 if wait condition didn\*(Aqt exist and search for other wait conditions should continue\&. Non\-zero return, \-errno on failure and
\fIp\fR\*(Aqs pid on success, implies that tasklist_lock is released and wait condition search should terminate\&.
.SH "COPYRIGHT"
.br