Hi All, I am visulazing a one of the use of char device driver. I need to write a char device which will prompt me by printing on my pseudo terminal if there is any zombie element in a runqueue on a specific processor. Is it possible to keep a track on runqueue through a function defined in a char device ? If I provied the information about zombies via /proc filesystem, then a user needs to read file again and again and would not be able to keep a constant watch on the zombies. Is it possible that my char device goes to sleep on a waitqueue and wakes up's only when a zombies process has come in a runqueue and then after giving details of that zombie process, my char device driver again goes to sleep and wait for new zombies in a runqueue. Could anyone guide me is the above thought can be implemented. Regards Dinesh ________________________________________________________________________ Yahoo! India Matrimony: Find your life partner online Go to: http://yahoo.shaadi.com/india-matrimony -- Kernelnewbies: Help each other learn about the Linux kernel. Archive: http://mail.nl.linux.org/kernelnewbies/ FAQ: http://kernelnewbies.org/faq/