Sophie: kernel-doc-3.11.10-100.fc18 noarch

kernel-doc-3.11.10-100.fc18.noarch.rpm

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<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"><html xmlns="http://www.w3.org/1999/xhtml"><head><meta http-equiv="Content-Type" content="text/html; charset=ANSI_X3.4-1968" /><title>workqueue_congested</title><meta name="generator" content="DocBook XSL Stylesheets V1.78.1" /><link rel="home" href="index.html" title="Linux Device Drivers" /><link rel="up" href="ch01s06.html" title="Workqueues and Kevents" /><link rel="prev" href="API-workqueue-set-max-active.html" title="workqueue_set_max_active" /><link rel="next" href="API-work-busy.html" title="work_busy" /></head><body><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center"><span class="phrase">workqueue_congested</span></th></tr><tr><td width="20%" align="left"><a accesskey="p" href="API-workqueue-set-max-active.html">Prev</a>&#160;</td><th width="60%" align="center">Workqueues and Kevents</th><td width="20%" align="right">&#160;<a accesskey="n" href="API-work-busy.html">Next</a></td></tr></table><hr /></div><div class="refentry"><a id="API-workqueue-congested"></a><div class="titlepage"></div><div class="refnamediv"><h2>Name</h2><p>workqueue_congested &#8212; 
     test whether a workqueue is congested
 </p></div><div class="refsynopsisdiv"><h2>Synopsis</h2><div class="funcsynopsis"><table border="0" class="funcprototype-table" summary="Function synopsis" style="cellspacing: 0; cellpadding: 0;"><tr><td><code class="funcdef">bool <strong class="fsfunc">workqueue_congested </strong>(</code></td><td>int <var class="pdparam">cpu</var>, </td></tr><tr><td>&#160;</td><td>struct workqueue_struct * <var class="pdparam">wq</var><code>)</code>;</td></tr></table><div class="funcprototype-spacer">&#160;</div></div></div><div class="refsect1"><a id="idm140404967312624"></a><h2>Arguments</h2><div class="variablelist"><dl class="variablelist"><dt><span class="term"><em class="parameter"><code>cpu</code></em></span></dt><dd><p>
     CPU in question
    </p></dd><dt><span class="term"><em class="parameter"><code>wq</code></em></span></dt><dd><p>
     target workqueue
    </p></dd></dl></div></div><div class="refsect1"><a id="idm140404967307472"></a><h2>Description</h2><p>
   Test whether <em class="parameter"><code>wq</code></em>'s cpu workqueue for <em class="parameter"><code>cpu</code></em> is congested.  There is
   no synchronization around this function and the test result is
   unreliable and only useful as advisory hints or for debugging.
   </p><p>

   If <em class="parameter"><code>cpu</code></em> 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't mean the workqueue is also
   contested on other CPUs / NUMA nodes.
</p></div><div class="refsect1"><a id="idm140404967303456"></a><h2>RETURNS</h2><p>
   <code class="constant">true</code> if congested, <code class="constant">false</code> otherwise.
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