Hi all, I have couple of questions 1. what is the purpose of using the following macros in a module MODULE_AUTHOR(name) MODULE_DESCRIPTION(desc) MOD_IN_USE and can u please suggest what r the other macros that can be used inside a module for betterment of the module if any. 2. In the sys_call_table only first 221 postions are occupied by the system calls in i386 architecture.What is stored exactly in the remaining positions. What i want to know exactly is if i try to insert my own sytem call after 221nd position using a loadable module, should i backup the content(i mean the pointer to some function or something)and restore it when the module is unloaded. thanks and regards, mohan. - 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/