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-rw-r--r--tools/testing/selftests/rcutorture/doc/initrd.txt36
1 files changed, 7 insertions, 29 deletions
diff --git a/tools/testing/selftests/rcutorture/doc/initrd.txt b/tools/testing/selftests/rcutorture/doc/initrd.txt
index 933b4fd12327..41a4255865d4 100644
--- a/tools/testing/selftests/rcutorture/doc/initrd.txt
+++ b/tools/testing/selftests/rcutorture/doc/initrd.txt
@@ -1,12 +1,11 @@
-The rcutorture scripting tools automatically create the needed initrd
-directory using dracut. Failing that, this tool will create an initrd
-containing a single statically linked binary named "init" that loops
-over a very long sleep() call. In both cases, this creation is done
-by tools/testing/selftests/rcutorture/bin/mkinitrd.sh.
+The rcutorture scripting tools automatically create an initrd containing
+a single statically linked binary named "init" that loops over a
+very long sleep() call. In both cases, this creation is done by
+tools/testing/selftests/rcutorture/bin/mkinitrd.sh.
-However, if you are attempting to run rcutorture on a system that does
-not have dracut installed, and if you don't like the notion of static
-linking, you might wish to press an existing initrd into service:
+However, if you don't like the notion of statically linked bare-bones
+userspace environments, you might wish to press an existing initrd
+into service:
------------------------------------------------------------------------
cd tools/testing/selftests/rcutorture
@@ -15,24 +14,3 @@ mkdir initrd
cd initrd
cpio -id < /tmp/initrd.img.zcat
# Manually verify that initrd contains needed binaries and libraries.
-------------------------------------------------------------------------
-
-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
-
-while :
-do
- sleep 10
-done
-------------------------------------------------------------------------
-
-This approach also allows most of the binaries and libraries in the
-initrd filesystem to be dispensed with, which can save significant
-space in rcutorture's "res" directory.