Follow Erik's Linux Kernel Procfs Guide, the compilation was fine, #insmod proc-example.o gives me error of unresolved symbol create_proc_read_entry. What I am missing here? Thanks, -Hong - Kernelnewbies: Help each other learn about the Linux kernel. Archive: http://mail.nl.linux.org/kernelnewbies/ IRC Channel: irc.openprojects.net / #kernelnewbies Web Page: http://www.kernelnewbies.org/