'\" t
.\"     Title: threadgroup_change_begin
.\"    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 "THREADGROUP_CHANGE_B" "9" "January 2017" "Kernel Hackers Manual 4\&.8\&." "Driver Basics"
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.SH "NAME"
threadgroup_change_begin \- mark the beginning of changes to a threadgroup
.SH "SYNOPSIS"
.HP \w'void\ threadgroup_change_begin('u
.BI "void threadgroup_change_begin(struct\ task_struct\ *\ " "tsk" ");"
.SH "ARGUMENTS"
.PP
\fItsk\fR
.RS 4
task causing the changes
.RE
.SH "DESCRIPTION"
.PP
All operations which modify a threadgroup \- a new thread joining the group, death of a member thread (the assertion of PF_EXITING) and exec(2) dethreading the process and replacing the leader \- are wrapped by threadgroup_change_{begin|end}()\&. This is to provide a place which subsystems needing threadgroup stability can hook into for synchronization\&.
.SH "COPYRIGHT"
.br