1<html><head><meta http-equiv="Content-Type" content="text/html; charset=ANSI_X3.4-1968"><title>intel_lr_context_deferred_create</title><meta name="generator" content="DocBook XSL Stylesheets V1.78.1"><link rel="home" href="index.html" title="Linux DRM Developer's Guide"><link rel="up" href="ch04s03.html#idp1128337188" title="Logical Rings, Logical Ring Contexts and Execlists"><link rel="prev" href="API-intel-lr-context-free.html" title="intel_lr_context_free"><link rel="next" href="API-i915-dma-map-single.html" title="i915_dma_map_single"></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">intel_lr_context_deferred_create</span></th></tr><tr><td width="20%" align="left"><a accesskey="p" href="API-intel-lr-context-free.html">Prev</a>&#160;</td><th width="60%" align="center">Logical Rings, Logical Ring Contexts and Execlists</th><td width="20%" align="right">&#160;<a accesskey="n" href="API-i915-dma-map-single.html">Next</a></td></tr></table><hr></div><div class="refentry"><a name="API-intel-lr-context-deferred-create"></a><div class="titlepage"></div><div class="refnamediv"><h2>Name</h2><p>intel_lr_context_deferred_create &#8212; 
2     create the LRC specific bits of a context
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">intel_lr_context_deferred_create </b>(</code></td><td>struct intel_context * <var class="pdparam">ctx</var>, </td></tr><tr><td>&#160;</td><td>struct intel_engine_cs * <var class="pdparam">ring</var><code>)</code>;</td></tr></table><div class="funcprototype-spacer">&#160;</div></div></div><div class="refsect1"><a name="idp1128430676"></a><h2>Arguments</h2><div class="variablelist"><dl class="variablelist"><dt><span class="term"><em class="parameter"><code>ctx</code></em></span></dt><dd><p>
4     LR context to create.
5    </p></dd><dt><span class="term"><em class="parameter"><code>ring</code></em></span></dt><dd><p>
6     engine to be used with the context.
7    </p></dd></dl></div></div><div class="refsect1"><a name="idp1128433316"></a><h2>Description</h2><p>
8   This function can be called more than once, with different engines, if we plan
9   to use the context with them. The context backing objects and the ringbuffers
10   (specially the ringbuffer backing objects) suck a lot of memory up, and that's why
11</p></div><div class="refsect1"><a name="idp1128434164"></a><h2>the creation is a deferred call</h2><p>
12   it's better to make sure first that we need to use
13   a given ring with the context.
14</p></div><div class="refsect1"><a name="idp1128434876"></a><h2>Return</h2><p>
15   non-zero on error.
16</p></div></div><div class="navfooter"><hr><table width="100%" summary="Navigation footer"><tr><td width="40%" align="left"><a accesskey="p" href="API-intel-lr-context-free.html">Prev</a>&#160;</td><td width="20%" align="center"><a accesskey="u" href="ch04s03.html#idp1128337188">Up</a></td><td width="40%" align="right">&#160;<a accesskey="n" href="API-i915-dma-map-single.html">Next</a></td></tr><tr><td width="40%" align="left" valign="top"><span class="phrase">intel_lr_context_free</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">i915_dma_map_single</span></td></tr></table></div></body></html>
17