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<body class="manpage">
<div id="header">
<h1>
TRACE-CMD-STACK(1) Manual Page
</h1>
<h2>NAME</h2>
<div class="sectionbody">
<p>trace-cmd-stack -
   read, enable or disable Ftrace Linux kernel stack tracing.
</p>
</div>
</div>
<div id="content">
<div class="sect1">
<h2 id="_synopsis">SYNOPSIS</h2>
<div class="sectionbody">
<div class="paragraph"><p><strong>trace-cmd stack</strong></p></div>
</div>
</div>
<div class="sect1">
<h2 id="_description">DESCRIPTION</h2>
<div class="sectionbody">
<div class="paragraph"><p>The trace-cmd(1) stack enables the Ftrace stack tracer within the kernel.
The stack tracer enables the function tracer and at each function call
within the kernel, the stack is checked. When a new maximum usage stack
is discovered, it is recorded.</p></div>
<div class="paragraph"><p>When no option is used, the current stack is displayed.</p></div>
<div class="paragraph"><p>To enable the stack tracer, use the option <strong>--start</strong>, and to disable
the stack tracer, use the option <strong>--stop</strong>. The output will be the maximum
stack found since the start was enabled.</p></div>
<div class="paragraph"><p>Use <strong>--reset</strong> to reset the stack counter to zero.</p></div>
<div class="paragraph"><p>User <strong>--verbose</strong>[=<em>level</em>] to set the log level. Supported log levels are "none", "critical", "error",
"warning", "info", "debug", "all" or their identifiers "0", "1", "2", "3", "4", "5", "6". Setting
the log level to specific value enables all logs from that and all previous levels. The level will
default to "info" if one is not specified.</p></div>
</div>
</div>
<div class="sect1">
<h2 id="_see_also">SEE ALSO</h2>
<div class="sectionbody">
<div class="paragraph"><p>trace-cmd(1), trace-cmd-record(1), trace-cmd-report(1), trace-cmd-start(1),
trace-cmd-extract(1), trace-cmd-reset(1), trace-cmd-split(1),
trace-cmd-list(1), trace-cmd-listen(1)</p></div>
</div>
</div>
<div class="sect1">
<h2 id="_author">AUTHOR</h2>
<div class="sectionbody">
<div class="paragraph"><p>Written by Steven Rostedt, &lt;<a href="mailto:rostedt@goodmis.org">rostedt@goodmis.org</a>&gt;</p></div>
</div>
</div>
<div class="sect1">
<h2 id="_resources">RESOURCES</h2>
<div class="sectionbody">
<div class="paragraph"><p><a href="https://git.kernel.org/pub/scm/utils/trace-cmd/trace-cmd.git/">https://git.kernel.org/pub/scm/utils/trace-cmd/trace-cmd.git/</a></p></div>
</div>
</div>
<div class="sect1">
<h2 id="_copying">COPYING</h2>
<div class="sectionbody">
<div class="paragraph"><p>Copyright (C) 2010 Red Hat, Inc. Free use of this software is granted under
the terms of the GNU Public License (GPL).</p></div>
</div>
</div>
</div>
<div id="footnotes"><hr /></div>
<div id="footer">
<div id="footer-text">
Last updated
 2023-06-07 20:21:00 UTC
</div>
</div>
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