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POHow can I pause for 100+ milliseconds in a linux driver module?
 

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  1. POHow can I pause for 100+ milliseconds in a linux driver module?
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    <p>I'm writing a kernel driver for a device that produces regular amounts of data for reading periodically. The user space program is ideally suited to making this a blocking driver.</p> <p><strong>What methods are available for pausing anywhere from 4 to 100ms in a driver (i.e. doing the "<em>block</em>")</strong>? In user space I'd do something akin to:</p> <pre><code>tv.tv_sec = microsecond_delay / 1000000ul; tv.tv_usec = microsecond_delay % 1000000ul; (void)select(0, NULL, NULL, NULL, &amp; tv); </code></pre> <p>or </p> <pre><code>gettimeofday(tv,NULL); </code></pre> <p>and compare the structures. </p> <p>[Edit - my own answer] </p> <p>I will be using the following code in my driver:</p> <pre><code>#include &lt;linux/jiffies.h&gt; ... schedule_timeout(file-&gt;private_data-&gt;my_driver_struct.read_pause_jiffies); </code></pre> <p>Voila! I shall now test ...</p>
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    1. COAnswers are welcome, but I just found [this](http://makelinux.com/ldd3/chp-7-sect-4)
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    2. COActually, not what I'm looking for: I want to sleep a specified time, not create an asynchronous timer event.
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    3. COFound it: `extern signed long schedule_timeout(signed long timeout);`
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