1<html><head><meta http-equiv="Content-Type" content="text/html; charset=ANSI_X3.4-1968"><title>get_pfn_range_for_nid</title><meta name="generator" content="DocBook XSL Stylesheets V1.78.1"><link rel="home" href="index.html" title="The Linux Kernel API"><link rel="up" href="ch04s03.html" title="More Memory Management Functions"><link rel="prev" href="API-sparse-memory-present-with-active-regions.html" title="sparse_memory_present_with_active_regions"><link rel="next" href="API-absent-pages-in-range.html" title="absent_pages_in_range"></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">get_pfn_range_for_nid</span></th></tr><tr><td width="20%" align="left"><a accesskey="p" href="API-sparse-memory-present-with-active-regions.html">Prev</a>&#160;</td><th width="60%" align="center">More Memory Management Functions</th><td width="20%" align="right">&#160;<a accesskey="n" href="API-absent-pages-in-range.html">Next</a></td></tr></table><hr></div><div class="refentry"><a name="API-get-pfn-range-for-nid"></a><div class="titlepage"></div><div class="refnamediv"><h2>Name</h2><p>get_pfn_range_for_nid &#8212; 
2     Return the start and end page frames for a node
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">void <b class="fsfunc">get_pfn_range_for_nid </b>(</code></td><td>unsigned int <var class="pdparam">nid</var>, </td></tr><tr><td>&#160;</td><td>unsigned long * <var class="pdparam">start_pfn</var>, </td></tr><tr><td>&#160;</td><td>unsigned long * <var class="pdparam">end_pfn</var><code>)</code>;</td></tr></table><div class="funcprototype-spacer">&#160;</div></div></div><div class="refsect1"><a name="idp1124568684"></a><h2>Arguments</h2><div class="variablelist"><dl class="variablelist"><dt><span class="term"><em class="parameter"><code>nid</code></em></span></dt><dd><p>
4     The nid to return the range for. If MAX_NUMNODES, the min and max PFN are returned.
5    </p></dd><dt><span class="term"><em class="parameter"><code>start_pfn</code></em></span></dt><dd><p>
6     Passed by reference. On return, it will have the node start_pfn.
7    </p></dd><dt><span class="term"><em class="parameter"><code>end_pfn</code></em></span></dt><dd><p>
8     Passed by reference. On return, it will have the node end_pfn.
9    </p></dd></dl></div></div><div class="refsect1"><a name="idp1124572476"></a><h2>Description</h2><p>
10   It returns the start and end page frame of a node based on information
11   provided by <code class="function">memblock_set_node</code>. If called for a node
12   with no available memory, a warning is printed and the start and end
13   PFNs will be 0.
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