This HOWTO explains the steps required to configure a user's cpu share 
automatically when he/she logs in. This has been verified to work on
a Redhat distribution.

Note : This HOWTO is a *hack* to get things working quickly. In particular it 
doesn't follow standards like LSB.

1. Create a file /etc/user_cpu_share.conf with this format:

	[uid]	[cpu_share]

   Ex:

	512	1024	#user vatsa
	514	512	#user guest


2. Create a script, named "kernel.agent" in /etc/hotplug directory 
   as follows. Make that script executable and owned by root.

#!/bin/sh
#
# kernel hotplug agent for 2.6 kernels
#
#       ACTION=add
#       DEVPATH=/kernel/uids/[uid]
#

cd /etc/hotplug
. ./hotplug.functions

case $ACTION in

add)
	uid=${DEVPATH##*/}
	line=`grep -w $uid /etc/user_cpu_share.conf`
	if [ $? -eq 0 ]
	then
		cpu_share=`echo $line | awk '{print $2}'`
		echo $cpu_share > /sys/$DEVPATH/cpu_share
	fi
	;;

*)
	;;
esac