133 lines
4.9 KiB
HTML
133 lines
4.9 KiB
HTML
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
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<html>
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<head>
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<meta name="generator" content=
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"HTML Tidy for Linux/x86 (vers 1 September 2005), see www.w3.org">
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<meta http-equiv="Content-Type" content=
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"text/html; charset=us-ascii">
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<title>Chapter 20. Using the /proc File System
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Interface</title>
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<meta name="generator" content="DocBook XSL Stylesheets V1.68.1">
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<link rel="start" href="index.html" title=
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"NVIDIA Accelerated Linux Graphics Driver README and Installation Guide">
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<link rel="up" href="installationandconfiguration.html" title=
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"Part I. Installation and Configuration Instructions">
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<link rel="prev" href="flippingubb.html" title=
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"Chapter 19. Configuring Flipping and UBB">
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<link rel="next" href="powermanagement.html" title=
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"Chapter 21. Configuring Power Management Support">
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</head>
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<body>
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<div class="navheader">
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<table width="100%" summary="Navigation header">
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<tr>
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<th colspan="3" align="center">Chapter 20. Using the
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<code class="computeroutput">/proc</code> File System
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Interface</th>
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</tr>
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<tr>
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<td width="20%" align="left"><a accesskey="p" href=
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"flippingubb.html">Prev</a> </td>
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<th width="60%" align="center">Part I. Installation and
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Configuration Instructions</th>
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<td width="20%" align="right"> <a accesskey="n" href=
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"powermanagement.html">Next</a></td>
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</tr>
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</table>
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<hr></div>
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<div class="chapter" lang="en">
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<div class="titlepage">
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<div>
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<div>
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<h2 class="title"><a name="procinterface" id=
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"procinterface"></a>Chapter 20. Using the <code class=
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"computeroutput">/proc</code> File System Interface</h2>
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</div>
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</div>
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</div>
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<p>The NVIDIA <code class="filename">/proc</code> file system
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interface can be used to obtain run-time information about the
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NVIDIA kernel driver and about the NVIDIA GPUs present in the
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system. It can also be used to control some aspects of the NVIDIA
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driver's operation.</p>
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<p>This information is contained in several files in <code class=
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"filename">/proc/driver/nvidia</code>:</p>
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<div class="variablelist">
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<dl>
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<dt><span class="term"><code class=
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"filename">/proc/driver/nvidia/version</code></span></dt>
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<dd>
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<p>Lists the installed driver revision and the version of the GNU C
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compiler used to build the Linux kernel module.</p>
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</dd>
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<dt><span class="term"><code class=
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"filename">/proc/driver/nvidia/warnings</code></span></dt>
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<dd>
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<p>The NVIDIA graphics driver tries to detect potential problems
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with the host system's kernel and warns about them using the
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kernel's <code class="computeroutput">printk()</code> mechanism,
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typically logged by the system to <code class=
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"filename">/var/log/messages</code>.</p>
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<p>Important NVIDIA warning messages are also logged to dedicated
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text files in this <code class="filename">/proc</code>
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directory.</p>
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</dd>
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<dt><span class="term"><code class=
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"filename">/proc/driver/nvidia/gpus/domain:bus:device.function/information</code></span></dt>
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<dd>
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<p>Provide information about each of the installed NVIDIA GPUs
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(model name, IRQ, BIOS version, etc.). Note that some of the
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information is only available when the GPUs have been
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initialized.</p>
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</dd>
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<dt><span class="term"><code class=
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"filename">/proc/driver/nvidia/gpus/domain:bus:device.function/power</code></span></dt>
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<dd>
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<p>Provide information about the runtime D3 (RTD3) Power Management
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status of each of the installed NVIDIA GPUs. Note that some of the
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information is only available when the GPUs have been initialized.
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Please see <a href="dynamicpowermanagement.html" title=
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"Chapter 22. PCI-Express Runtime D3 (RTD3) Power Management">
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Chapter 22, <i>PCI-Express Runtime D3 (RTD3) Power
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Management</i></a> for the detailed description of this
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<code class="filename">/proc</code> interface.</p>
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</dd>
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<dt><span class="term"><code class=
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"filename">/proc/driver/nvidia/suspend</code></span></dt>
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<dd>
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<p>Notify the NVIDIA kernel drivers of system power management
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events, such as suspend and hibernate. Please see <a href=
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"powermanagement.html" title=
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"Chapter 21. Configuring Power Management Support">Chapter 21,
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<i>Configuring Power Management Support</i></a> for a detailed
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description of this <code class="filename">/proc</code>
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interface.</p>
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</dd>
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</dl>
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</div>
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</div>
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<div class="navfooter">
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<hr>
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<table width="100%" summary="Navigation footer">
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<tr>
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<td width="40%" align="left"><a accesskey="p" href=
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"flippingubb.html">Prev</a> </td>
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<td width="20%" align="center"><a accesskey="u" href=
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"installationandconfiguration.html">Up</a></td>
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<td width="40%" align="right"> <a accesskey="n" href=
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"powermanagement.html">Next</a></td>
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</tr>
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<tr>
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<td width="40%" align="left" valign="top">
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Chapter 19. Configuring Flipping and UBB </td>
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<td width="20%" align="center"><a accesskey="h" href=
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"index.html">Home</a></td>
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<td width="40%" align="right" valign="top">
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Chapter 21. Configuring Power Management
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Support</td>
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</tr>
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</table>
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</div>
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</body>
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</html>
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