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<h3>
James Browning pushed to branch master
at <a href="https://gitlab.com/NTPsec/ntpsec">NTPsec / ntpsec</a>
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<h4>
Commits:
</h4>
<ul>
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<strong><a href="https://gitlab.com/NTPsec/ntpsec/-/commit/46af561a8cfc1b58d3cbfb0cb34c570f8d5f2820">46af561a</a></strong>
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<span>by William Cody Ardoin</span>
<i>at 2020-08-24T17:05:17+00:00</i>
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<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">Use pthreads API to set SCHED_IDLE scheduling policy
Previously we were using the GLIBC sched_setscheduler() function.
This is Linux-only. We now use the pthread_setschedparam() function
from pthreads, which is portable beyond Linux and works with
musl libc as well as GLIBC.
While the documentation for sched_setscheduler() claims that it affects
the whole process, in fact it only affects the calling thread - see
https://www.openwall.com/lists/musl/2016/03/01/5 for details
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<h4>1 changed file:</h4>
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<a href="#5ed258e118427794a94bfd9b47ab21c60a701577">
ntpd/ntpd.c
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<h4>Changes:</h4>
<li id="5ed258e118427794a94bfd9b47ab21c60a701577">
<a href="https://gitlab.com/NTPsec/ntpsec/-/commit/46af561a8cfc1b58d3cbfb0cb34c570f8d5f2820#5ed258e118427794a94bfd9b47ab21c60a701577"><strong>ntpd/ntpd.c</strong></a>
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<td class="line_content match " style="padding-left: 0.5em; padding-right: 0.5em; color: rgba(0,0,0,0.3);" bgcolor="#fafafa">@@ -450,8 +450,8 @@ set_process_priority(void)</td>
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<pre style="margin: 0;"> <span id="LC450" class="line" lang="c"> <span class="k" style="font-weight: 600;">else</span></span>
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451
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<pre style="margin: 0;"> <span id="LC451" class="line" lang="c"> <span class="n" style="color: #333;">sched</span><span class="p">.</span><span class="n" style="color: #333;">sched_priority</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">config_priority</span><span class="p">;</span></span>
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452
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452
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<pre style="margin: 0;"> <span id="LC452" class="line" lang="c"> <span class="p">}</span></span>
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453
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<pre style="margin: 0;">-<span id="LC453" class="line" lang="c"> <span class="k" style="font-weight: 600;">if</span> <span class="p">(</span> <span class="n" style="color: #333;"><span class="idiff left">sched_setscheduler</span></span><span class="p"><span class="idiff">(</span></span><span class="mi" style="color: #099;"><span class="idiff">0</span></span><span class="p"><span class="idiff">,</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff">SCHED_FIFO</span></span><span class="p"><span class="idiff">,</span></span><span class="idiff"> </span><span class="o" style="font-weight: 600;"><span class="idiff">&</span></span><span class="n" style="color: #333;"><span class="idiff">sched</span></span><span class="p"><span class="idiff">)</span></span><span class="idiff"> </span><span class="o" style="font-weight: 600;"><span class="idiff">==</span></span><span class="idiff"> </span><span class="o" style="font-weight: 600;"><span class="idiff">-</span></span><span class="mi" style="color: #099;"><span class="idiff right">1</span></span> <span class="p">)</span></span>
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454
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<pre style="margin: 0;">-<span id="LC454" class="line" lang="c"> <span class="n" style="color: #333;">msyslog</span><span class="p">(</span><span class="n" style="color: #333;">LOG_ERR</span><span class="p">,</span> <span class="s" style="color: #d14;">"INIT: <span class="idiff left right">sched_setscheduler</span>(): %s"</span><span class="p">,</span> <span class="n" style="color: #333;">strerror</span><span class="p">(</span><span class="n" style="color: #333;">errno</span><span class="p">));</span></span>
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<pre style="margin: 0;">+<span id="LC453" class="line" lang="c"> <span class="k" style="font-weight: 600;">if</span> <span class="p">(</span> <span class="n" style="color: #333;"><span class="idiff left">pthread_setschedparam</span></span><span class="p"><span class="idiff">(</span></span><span class="n" style="color: #333;"><span class="idiff">pthread_self</span></span><span class="p"><span class="idiff">(),</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff">SCHED_FIFO</span></span><span class="p"><span class="idiff">,</span></span><span class="idiff"> </span><span class="o" style="font-weight: 600;"><span class="idiff">&</span></span><span class="n" style="color: #333;"><span class="idiff">sched</span></span><span class="p"><span class="idiff">)</span></span><span class="idiff"> </span><span class="o" style="font-weight: 600;"><span class="idiff">!=</span></span><span class="idiff"> </span><span class="mi" style="color: #099;"><span class="idiff right">0</span></span> <span class="p">)</span></span>
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454
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<pre style="margin: 0;">+<span id="LC454" class="line" lang="c"> <span class="n" style="color: #333;">msyslog</span><span class="p">(</span><span class="n" style="color: #333;">LOG_ERR</span><span class="p">,</span> <span class="s" style="color: #d14;">"INIT: <span class="idiff left right">pthread_setschedparam</span>(): %s"</span><span class="p">,</span> <span class="n" style="color: #333;">strerror</span><span class="p">(</span><span class="n" style="color: #333;">errno</span><span class="p">));</span></span>
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455
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<pre style="margin: 0;"> <span id="LC455" class="line" lang="c"> <span class="k" style="font-weight: 600;">else</span></span>
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<pre style="margin: 0;"> <span id="LC456" class="line" lang="c"> <span class="n" style="color: #333;">need_priority</span> <span class="o" style="font-weight: 600;">=</span> <span class="nb" style="color: #0086b3;">false</span><span class="p">;</span></span>
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<pre style="margin: 0;"> <span id="LC457" class="line" lang="c"> <span class="p">}</span></span>
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