1<html><head><meta http-equiv="Content-Type" content="text/html; charset=ANSI_X3.4-1968"><title>yield_to</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="ch01s03.html" title="Delaying, scheduling, and timer routines"><link rel="prev" href="API-yield.html" title="yield"><link rel="next" href="API-cpupri-find.html" title="cpupri_find"></head><body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF"><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center"><span class="phrase">yield_to</span></th></tr><tr><td width="20%" align="left"><a accesskey="p" href="API-yield.html">Prev</a>&#160;</td><th width="60%" align="center">Delaying, scheduling, and timer routines</th><td width="20%" align="right">&#160;<a accesskey="n" href="API-cpupri-find.html">Next</a></td></tr></table><hr></div><div class="refentry"><a name="API-yield-to"></a><div class="titlepage"></div><div class="refnamediv"><h2>Name</h2><p>yield_to &#8212; 
2     yield the current processor to another thread in your thread group, or accelerate that thread toward the processor it's on.
3 </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">int __sched <b class="fsfunc">yield_to </b>(</code></td><td>struct task_struct * <var class="pdparam">p</var>, </td></tr><tr><td>&#160;</td><td>bool <var class="pdparam">preempt</var><code>)</code>;</td></tr></table><div class="funcprototype-spacer">&#160;</div></div></div><div class="refsect1"><a name="idp1106791348"></a><h2>Arguments</h2><div class="variablelist"><dl class="variablelist"><dt><span class="term"><em class="parameter"><code>p</code></em></span></dt><dd><p>
4     target task
5    </p></dd><dt><span class="term"><em class="parameter"><code>preempt</code></em></span></dt><dd><p>
6     whether task preemption is allowed or not
7    </p></dd></dl></div></div><div class="refsect1"><a name="idp1106793892"></a><h2>Description</h2><p>
8   It's the caller's job to ensure that the target task struct
9   can't go away on us before we can do any checks.
10</p></div><div class="refsect1"><a name="idp1106794596"></a><h2>Return</h2><p>
11   true (&gt;0) if we indeed boosted the target task.
12   false (0) if we failed to boost the target.
13   -ESRCH if there's no task to yield to.
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