Helo... > How does process get suspended > > 1. When running in user mode > 2. When running in kernel mode Well, IMHO suspended might be interpreted as task in TASK_STOPPED, TASK_INTERRUPTIBLE or TASK_UNINTERRUPTIBLE. All these task state modification is done on kernel mode in response of certain signal, sleep(), waiting for disk read and any other kind of operation that implicitly call set_task_state in kernel space. One case that I am not sure whether suspension is done on kernel space or user space, is when you are doing instruction trace using gdb (in other word, setting TF--Trap Flag). All I know, when TF is set, exception is triggered and in turn it calls exception handler. Exception handler work in kernel space....so personally I say this is also happen on kernel space. But I allow other people to CMIIW regards Mulyadi -- Kernelnewbies: Help each other learn about the Linux kernel. Archive: http://mail.nl.linux.org/kernelnewbies/ FAQ: http://kernelnewbies.org/faq/
