The reason why "set_current_state(TASK_RUNNING)" is not needed, is
because everytime you exit from the schedule() function, your state is
TASK_RUNNING - that is why the code is running. I saw this in the
kernel source as a comment somewhere :-).
> schedule();
> }
>
> /* we wake up here */
> /* check for pending SIGKILL signal, die if there is any */
> if (signal_pending(current)) {
> kthread_debug("SIGKILL pending\n");
> break;
> }
>
> /* is there a race condition ? */
> condition = 0;
> kthread_debug("mkthread woke up!\n");
> }
>
> /* change task stae to TASK_RUNNING before removing from wait queue */
>
> set_current_state(TASK_RUNNING);
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