If I rebuild the kernel after just changing only macro constant value in Linux header(disk_stat.h file) and recompile. The header file is not released under GPL, atleast header comments has no GPL release comment. Do I need to release new kernel under GPL. Thanks and Regards Deepak -- Kernelnewbies: Help each other learn about the Linux kernel. Archive: http://mail.nl.linux.org/kernelnewbies/ FAQ: http://kernelnewbies.org/faq/