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diff --git a/rcutorture/doc/initrd.txt b/rcutorture/doc/initrd.txt
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@@ -1,90 +0,0 @@
-This document describes one way to create the initrd directory hierarchy
-in order to allow an initrd to be built into your kernel.  The trick
-here is to steal the initrd file used on your Linux laptop, Ubuntu in
-this case.  There are probably much better ways of doing this.
-
-That said, here are the commands:
-
-------------------------------------------------------------------------
-zcat /initrd.img > /tmp/initrd.img.zcat
-mkdir initrd
-cd initrd
-cpio -id < /tmp/initrd.img.zcat
-------------------------------------------------------------------------
-
-Interestingly enough, if you are running rcutorture, you don't really
-need userspace in many cases.  Running without userspace has the
-advantage of allowing you to test your kernel independently of the
-distro in place, the root-filesystem layout, and so on.  To make this
-happen, put the following script in the initrd's tree's "/init" file,
-with 0755 mode.
-
-------------------------------------------------------------------------
-#!/bin/sh
-
-[ -d /dev ] || mkdir -m 0755 /dev
-[ -d /root ] || mkdir -m 0700 /root
-[ -d /sys ] || mkdir /sys
-[ -d /proc ] || mkdir /proc
-[ -d /tmp ] || mkdir /tmp
-mkdir -p /var/lock
-mount -t sysfs -o nodev,noexec,nosuid sysfs /sys
-mount -t proc -o nodev,noexec,nosuid proc /proc
-# Some things don't work properly without /etc/mtab.
-ln -sf /proc/mounts /etc/mtab
-
-# Note that this only becomes /dev on the real filesystem if udev's scripts
-# are used; which they will be, but it's worth pointing out
-if ! mount -t devtmpfs -o mode=0755 udev /dev; then
-	echo "W: devtmpfs not available, falling back to tmpfs for /dev"
-	mount -t tmpfs -o mode=0755 udev /dev
-	[ -e /dev/console ] || mknod --mode=600 /dev/console c 5 1
-	[ -e /dev/kmsg ] || mknod --mode=644 /dev/kmsg c 1 11
-	[ -e /dev/null ] || mknod --mode=666 /dev/null c 1 3
-fi
-
-mkdir /dev/pts
-mount -t devpts -o noexec,nosuid,gid=5,mode=0620 devpts /dev/pts || true
-mount -t tmpfs -o "nosuid,size=20%,mode=0755" tmpfs /run
-mkdir /run/initramfs
-# compatibility symlink for the pre-oneiric locations
-ln -s /run/initramfs /dev/.initramfs
-
-# Export relevant variables
-export ROOT=
-export ROOTDELAY=
-export ROOTFLAGS=
-export ROOTFSTYPE=
-export IP=
-export BOOT=
-export BOOTIF=
-export UBIMTD=
-export break=
-export init=/sbin/init
-export quiet=n
-export readonly=y
-export rootmnt=/root
-export debug=
-export panic=
-export blacklist=
-export resume=
-export resume_offset=
-export recovery=
-
-for i in /sys/devices/system/cpu/cpu*/online
-do
-	case $i in
-	'/sys/devices/system/cpu/cpu0/online')
-		;;
-	'/sys/devices/system/cpu/cpu*/online')
-		;;
-	*)
-		echo 1 > $i
-		;;
-	esac
-done
-
-while :
-do
-	sleep 10
-done