1<html><head><meta http-equiv="Content-Type" content="text/html; charset=ANSI_X3.4-1968"><title>snd_pcm_lib_preallocate_pages_for_all</title><meta name="generator" content="DocBook XSL Stylesheets V1.78.1"><link rel="home" href="index.html" title="The ALSA Driver API"><link rel="up" href="ch02s03.html" title="PCM Memory Management"><link rel="prev" href="API-snd-pcm-lib-preallocate-pages.html" title="snd_pcm_lib_preallocate_pages"><link rel="next" href="API-snd-pcm-sgbuf-ops-page.html" title="snd_pcm_sgbuf_ops_page"></head><body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF"><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center"><span class="phrase">snd_pcm_lib_preallocate_pages_for_all</span></th></tr><tr><td width="20%" align="left"><a accesskey="p" href="API-snd-pcm-lib-preallocate-pages.html">Prev</a>&#160;</td><th width="60%" align="center">PCM Memory Management</th><td width="20%" align="right">&#160;<a accesskey="n" href="API-snd-pcm-sgbuf-ops-page.html">Next</a></td></tr></table><hr></div><div class="refentry"><a name="API-snd-pcm-lib-preallocate-pages-for-all"></a><div class="titlepage"></div><div class="refnamediv"><h2>Name</h2><p>snd_pcm_lib_preallocate_pages_for_all &#8212; 
2     pre-allocation for continuous memory type (all substreams)
3 </p></div><div class="refsynopsisdiv"><h2>Synopsis</h2><div class="funcsynopsis"><table border="0" class="funcprototype-table" summary="Function synopsis" style="cellspacing: 0; cellpadding: 0;"><tr><td><code class="funcdef">int <b class="fsfunc">snd_pcm_lib_preallocate_pages_for_all </b>(</code></td><td>struct snd_pcm * <var class="pdparam">pcm</var>, </td></tr><tr><td>&#160;</td><td>int <var class="pdparam">type</var>, </td></tr><tr><td>&#160;</td><td>void * <var class="pdparam">data</var>, </td></tr><tr><td>&#160;</td><td>size_t <var class="pdparam">size</var>, </td></tr><tr><td>&#160;</td><td>size_t <var class="pdparam">max</var><code>)</code>;</td></tr></table><div class="funcprototype-spacer">&#160;</div></div></div><div class="refsect1"><a name="idp1094306580"></a><h2>Arguments</h2><div class="variablelist"><dl class="variablelist"><dt><span class="term"><em class="parameter"><code>pcm</code></em></span></dt><dd><p>
4     the pcm instance
5    </p></dd><dt><span class="term"><em class="parameter"><code>type</code></em></span></dt><dd><p>
6     DMA type (SNDRV_DMA_TYPE_*)
7    </p></dd><dt><span class="term"><em class="parameter"><code>data</code></em></span></dt><dd><p>
8     DMA type dependent data
9    </p></dd><dt><span class="term"><em class="parameter"><code>size</code></em></span></dt><dd><p>
10     the requested pre-allocation size in bytes
11    </p></dd><dt><span class="term"><em class="parameter"><code>max</code></em></span></dt><dd><p>
12     the max. allowed pre-allocation size
13    </p></dd></dl></div></div><div class="refsect1"><a name="idp1094312300"></a><h2>Description</h2><p>
14   Do pre-allocation to all substreams of the given pcm for the
15   specified DMA type.
16</p></div><div class="refsect1"><a name="idp1094312988"></a><h2>Return</h2><p>
17   Zero if successful, or a negative error code on failure.
18</p></div></div><div class="navfooter"><hr><table width="100%" summary="Navigation footer"><tr><td width="40%" align="left"><a accesskey="p" href="API-snd-pcm-lib-preallocate-pages.html">Prev</a>&#160;</td><td width="20%" align="center"><a accesskey="u" href="ch02s03.html">Up</a></td><td width="40%" align="right">&#160;<a accesskey="n" href="API-snd-pcm-sgbuf-ops-page.html">Next</a></td></tr><tr><td width="40%" align="left" valign="top"><span class="phrase">snd_pcm_lib_preallocate_pages</span>&#160;</td><td width="20%" align="center"><a accesskey="h" href="index.html">Home</a></td><td width="40%" align="right" valign="top">&#160;<span class="phrase">snd_pcm_sgbuf_ops_page</span></td></tr></table></div></body></html>
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