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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>allocate_resource</title><meta name="generator" content="DocBook XSL Stylesheets V1.75.2" /><link rel="home" href="index.html" title="The Linux Kernel API" /><link rel="up" href="ch09s03.html" title="Resources Management" /><link rel="prev" href="re314.html" title="release_resource" /><link rel="next" href="re316.html" title="adjust_resource" /></head><body><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center"><span>allocate_resource</span></th></tr><tr><td width="20%" align="left"><a accesskey="p" href="re314.html">Prev</a> </td><th width="60%" align="center">Resources Management</th><td width="20%" align="right"> <a accesskey="n" href="re316.html">Next</a></td></tr></table><hr /></div><div class="refentry" title="allocate_resource"><a id="API-allocate-resource"></a><div class="titlepage"></div><div class="refnamediv"><h2>Name</h2><p>allocate_resource —
allocate empty slot in the resource tree given range & alignment
</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">int <b class="fsfunc">allocate_resource </b>(</code></td><td>struct resource * <var class="pdparam">root</var>, </td></tr><tr><td> </td><td>struct resource * <var class="pdparam">new</var>, </td></tr><tr><td> </td><td>resource_size_t <var class="pdparam">size</var>, </td></tr><tr><td> </td><td>resource_size_t <var class="pdparam">min</var>, </td></tr><tr><td> </td><td>resource_size_t <var class="pdparam">max</var>, </td></tr><tr><td> </td><td>resource_size_t <var class="pdparam">align</var>, </td></tr><tr><td> </td><td>void (*<var class="pdparam">alignf</var>)
<code>(</code>void *, struct resource *, resource_size_t, resource_size_t<code>)</code>, </td></tr><tr><td> </td><td>void * <var class="pdparam">alignf_data</var><code>)</code>;</td></tr></table><div class="funcprototype-spacer"> </div></div></div><div class="refsect1" title="Arguments"><a id="id2666623"></a><h2>Arguments</h2><div class="variablelist"><dl><dt><span class="term"><em class="parameter"><code>root</code></em></span></dt><dd><p>
root resource descriptor
</p></dd><dt><span class="term"><em class="parameter"><code>new</code></em></span></dt><dd><p>
resource descriptor desired by caller
</p></dd><dt><span class="term"><em class="parameter"><code>size</code></em></span></dt><dd><p>
requested resource region size
</p></dd><dt><span class="term"><em class="parameter"><code>min</code></em></span></dt><dd><p>
minimum size to allocate
</p></dd><dt><span class="term"><em class="parameter"><code>max</code></em></span></dt><dd><p>
maximum size to allocate
</p></dd><dt><span class="term"><em class="parameter"><code>align</code></em></span></dt><dd><p>
alignment requested, in bytes
</p></dd><dt><span class="term"><em class="parameter"><code>alignf</code></em></span></dt><dd><p>
alignment function, optional, called if not NULL
</p></dd><dt><span class="term"><em class="parameter"><code>alignf_data</code></em></span></dt><dd><p>
arbitrary data to pass to the <em class="parameter"><code>alignf</code></em> function
</p></dd></dl></div></div></div><div class="navfooter"><hr /><table width="100%" summary="Navigation footer"><tr><td width="40%" align="left"><a accesskey="p" href="re314.html">Prev</a> </td><td width="20%" align="center"><a accesskey="u" href="ch09s03.html">Up</a></td><td width="40%" align="right"> <a accesskey="n" href="re316.html">Next</a></td></tr><tr><td width="40%" align="left" valign="top"><span>release_resource</span> </td><td width="20%" align="center"><a accesskey="h" href="index.html">Home</a></td><td width="40%" align="right" valign="top"> <span>adjust_resource</span></td></tr></table></div></body></html>
