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<html xmlns="http://www.w3.org/1999/xhtml"><head><meta http-equiv="Content-Type" content="text/html; charset=ANSI_X3.4-1968" /><title>printk_timed_ratelimit</title><meta name="generator" content="DocBook XSL Stylesheets V1.75.2" /><link rel="home" href="index.html" title="Linux Device Drivers" /><link rel="up" href="ch01s08.html" title="Kernel utility functions" /><link rel="prev" href="re140.html" title="console_conditional_schedule" /><link rel="next" href="re142.html" title="panic" /></head><body><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center"><span>printk_timed_ratelimit</span></th></tr><tr><td width="20%" align="left"><a accesskey="p" href="re140.html">Prev</a> </td><th width="60%" align="center">Kernel utility functions</th><td width="20%" align="right"> <a accesskey="n" href="re142.html">Next</a></td></tr></table><hr /></div><div class="refentry" title="printk_timed_ratelimit"><a id="API-printk-timed-ratelimit"></a><div class="titlepage"></div><div class="refnamediv"><h2>Name</h2><p>printk_timed_ratelimit —
caller-controlled printk ratelimiting
</p></div><div class="refsynopsisdiv" title="Synopsis"><h2>Synopsis</h2><div class="funcsynopsis"><table border="0" summary="Function synopsis" cellspacing="0" cellpadding="0" class="funcprototype-table"><tr><td><code class="funcdef">bool <b class="fsfunc">printk_timed_ratelimit </b>(</code></td><td>unsigned long * <var class="pdparam">caller_jiffies</var>, </td></tr><tr><td> </td><td>unsigned int <var class="pdparam">interval_msecs</var><code>)</code>;</td></tr></table><div class="funcprototype-spacer"> </div></div></div><div class="refsect1" title="Arguments"><a id="id2613598"></a><h2>Arguments</h2><div class="variablelist"><dl><dt><span class="term"><em class="parameter"><code>caller_jiffies</code></em></span></dt><dd><p>
pointer to caller's state
</p></dd><dt><span class="term"><em class="parameter"><code>interval_msecs</code></em></span></dt><dd><p>
minimum interval between prints
</p></dd></dl></div></div><div class="refsect1" title="Description"><a id="id2613642"></a><h2>Description</h2><p>
<code class="function">printk_timed_ratelimit</code> returns true if more than <em class="parameter"><code>interval_msecs</code></em>
milliseconds have elapsed since the last time <code class="function">printk_timed_ratelimit</code>
returned true.
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