i would suggest you schedule a tasklet. doing staff like from ISR , from my opinion is too risky and bug prone. About sending signals from kernel space to user space mayank rana Mon, 01 Sep 2008 07:28:33 -0700 Hi All, I am trying to send some information to User Space process from Kernel Module/Driver. How can I do that in context of interrupt Service Routine? I found that using kill_async, it is possible to send SIGIO signal and handling that in User . Is there anyother way to achieve this ? -- Raz -- To unsubscribe from this list: send an email with "unsubscribe kernelnewbies" to ecartis@xxxxxxxxxxxx Please read the FAQ at http://kernelnewbies.org/FAQ