Hi could someone say how can I maintain a global data structure in kernel so that it stays in the kernel?? thanks!! Charumathi. You Can If U think U Can _________________________________________________________________ Chat with friends online, try MSN Messenger: http://messenger.msn.com -- Kernelnewbies: Help each other learn about the Linux kernel. Archive: http://mail.nl.linux.org/kernelnewbies/ FAQ: http://kernelnewbies.org/faq/