'\" t
.\"     Title: rcu_barrier
.\"    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 "RCU_BARRIER" "9" "January 2017" "Kernel Hackers Manual 4\&.8\&." "Driver Basics"
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.SH "NAME"
rcu_barrier \- Wait until all in\-flight \fBcall_rcu\fR callbacks complete\&.
.SH "SYNOPSIS"
.HP \w'void\ rcu_barrier('u
.BI "void rcu_barrier(" "void" ");"
.SH "ARGUMENTS"
.PP
\fIvoid\fR
.RS 4
no arguments
.RE
.SH "DESCRIPTION"
.PP
.PP
Note that this primitive does not necessarily wait for an RCU grace period to complete\&. For example, if there are no RCU callbacks queued anywhere in the system, then
\fBrcu_barrier\fR
is within its rights to return immediately, without waiting for anything, much less an RCU grace period\&.
.SH "COPYRIGHT"
.br