'\" t .\" Title: rcu_is_watching .\" Author: [FIXME: author] [see http://docbook.sf.net/el/author] .\" Generator: DocBook XSL Stylesheets v1.79.1 .\" Date: January 2017 .\" Manual: Driver Basics .\" Source: Kernel Hackers Manual 4.8.15 .\" Language: English .\" .TH "RCU_IS_WATCHING" "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" rcu_is_watching \- see if RCU thinks that the current CPU is idle .SH "SYNOPSIS" .HP \w'bool\ notrace\ rcu_is_watching('u .BI "bool notrace rcu_is_watching(" "void" ");" .SH "ARGUMENTS" .PP \fIvoid\fR .RS 4 no arguments .RE .SH "DESCRIPTION" .PP .PP If the current CPU is in its idle loop and is neither in an interrupt or NMI handler, return true\&. .SH "COPYRIGHT" .br