173 lines
2.4 KiB
HTML
173 lines
2.4 KiB
HTML
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
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<HTML
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><HEAD
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><TITLE
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>Persistent Data</TITLE
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><META
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NAME="GENERATOR"
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CONTENT="Modular DocBook HTML Stylesheet Version 1.7"><LINK
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REL="HOME"
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TITLE="Linux Loadable Kernel Module HOWTO"
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HREF="index.html"><LINK
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REL="PREVIOUS"
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TITLE="About Module Parameters"
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HREF="parm.html"><LINK
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REL="NEXT"
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TITLE="Technical Details"
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HREF="x627.html"></HEAD
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><BODY
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BGCOLOR="#FFFFFF"
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TEXT="#000000"
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VLINK="#840084"
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><TR
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COLSPAN="3"
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>Linux Loadable Kernel Module HOWTO</TH
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WIDTH="10%"
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>Prev</A
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><H1
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CLASS="SECT1"
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><A
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NAME="AEN615"
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></A
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>9. Persistent Data</H1
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><P
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>Some LKMs are set up to retain information from one load to the next.
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This is called persistent data. When you remove one of these LKMs
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with <B
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CLASS="COMMAND"
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>rmmod</B
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>, <B
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CLASS="COMMAND"
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>rmmod</B
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> extracts
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certain values from the LKM's working storage and stores them in a
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file. When you next insert the LKM with <B
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CLASS="COMMAND"
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>insmod</B
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>,
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<B
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CLASS="COMMAND"
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>insmod</B
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> reads the persistent data from the file and
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inserts it into the LKM.</P
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><P
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>See the <TT
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CLASS="PARAMETER"
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><I
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>--persist</I
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></TT
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> option on
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<B
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CLASS="COMMAND"
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>insmod</B
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> and <B
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CLASS="COMMAND"
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>rmmod</B
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>.</P
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><P
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>Persistent data was introduced in November 2000.</P
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></DIV
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HREF="parm.html"
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>Prev</A
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>Next</A
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><TR
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><TD
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WIDTH="33%"
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ALIGN="left"
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VALIGN="top"
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>About Module Parameters</TD
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><TD
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WIDTH="34%"
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ALIGN="center"
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VALIGN="top"
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> </TD
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><TD
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WIDTH="33%"
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ALIGN="right"
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VALIGN="top"
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>Technical Details</TD
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></TR
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></HTML
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> |