Dear Fawad, > AFAIK in kernel without preemption and no SMP the process (kernel > process) will never be rescheduled until unless it voluntarily call > schedule or releases CPU. You can see this behaviour by just inserting > while(1); (infinite loop) with-in your module and your system will > hang ! (CMIIW) I have tried this earlier version of 2.4 kernels and found what you mentioned. I found the same on 2.6.x kernel with Preemption & SMP disabled. But, when I tried this on a 2.6.x kernel with Preemption & SMP enabled I fond that the kernel hangs with some messages. I tried this by inserting a "while (1);" in close call. When APP calls close () call I found the kernel hangs for a while & immediately results in a crash. What is the reason for this? Is it the timer interrupt (ISR)that causes this? Regards, Mukund Jampala -- Kernelnewbies: Help each other learn about the Linux kernel. Archive: http://mail.nl.linux.org/kernelnewbies/ FAQ: http://kernelnewbies.org/faq/
