'\" t
.\"     Title: workqueue_congested
.\"    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 "WORKQUEUE_CONGESTED" "9" "May 2018" "Kernel Hackers Manual 3\&.16\&" "Driver Basics"
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.SH "NAME"
workqueue_congested \- test whether a workqueue is congested
.SH "SYNOPSIS"
.HP \w'bool\ workqueue_congested('u
.BI "bool workqueue_congested(int\ " "cpu" ", struct\ workqueue_struct\ *\ " "wq" ");"
.SH "ARGUMENTS"
.PP
\fIcpu\fR
.RS 4
CPU in question
.RE
.PP
\fIwq\fR
.RS 4
target workqueue
.RE
.SH "DESCRIPTION"
.PP
Test whether
\fIwq\fR\*(Aqs cpu workqueue for
\fIcpu\fR
is congested\&. There is no synchronization around this function and the test result is unreliable and only useful as advisory hints or for debugging\&.
.PP
If
\fIcpu\fR
is WORK_CPU_UNBOUND, the test is performed on the local CPU\&. Note that both per\-cpu and unbound workqueues may be associated with multiple pool_workqueues which have separate congested states\&. A workqueue being congested on one CPU doesn\*(Aqt mean the workqueue is also contested on other CPUs / NUMA nodes\&.
.SH "RETURN"
.PP
\fBtrue\fR
if congested,
\fBfalse\fR
otherwise\&.
.SH "COPYRIGHT"
.br