Please explain the System call asmlinkage long sys_getpid(void) { return current-> tgetid; } I would like to know what the void argument means and how it different from sys_getpid() Also what is meant by asmlinkage Regards Ashok ___________________________________________________________ NEW Yahoo! Cars - sell your car and browse thousands of new and used cars online! http://uk.cars.yahoo.com/ -- Kernelnewbies: Help each other learn about the Linux kernel. Archive: http://mail.nl.linux.org/kernelnewbies/ FAQ: http://kernelnewbies.org/faq/