initrd.txt

 1The rcutorture scripting tools automatically create an initrd containing
 2a single statically linked binary named "init" that loops over a
 3very long sleep() call.  In both cases, this creation is done by
 4tools/testing/selftests/rcutorture/bin/mkinitrd.sh.
 5
 6However, if you don't like the notion of statically linked bare-bones
 7userspace environments, you might wish to press an existing initrd
 8into service:
 9
10------------------------------------------------------------------------
11cd tools/testing/selftests/rcutorture
12zcat /initrd.img > /tmp/initrd.img.zcat
13mkdir initrd
14cd initrd
15cpio -id < /tmp/initrd.img.zcat
16# Manually verify that initrd contains needed binaries and libraries.