> > up_and_exit() would do it. Or preferably passing the address of the
> > semaphore as an extra argument to kernel_thread() in the first place.
>
> Any solution which involves a function being called from a kernel
> thread, and/or passing another arg to a kernel thread, is a non-starter
> ... See the discussion about timer_exit() a while ago. This sort of
timer_exit is a completely unrelated situation
> IMHO it is possible to solve this in a generic way without having to
> change the code for every single kernel thread.
It comes entirely down to one thing. The termination function of the thread
has to be code in the kernel code not a module. Thats it, nothing else. So
you just need some kind of sleep/wakeup proceedure for it.
As far as I can see all you need is
wait_and_die(sem)
{
up(&sem); /* In the kernel so can unload */
sys_exit(0); /* Never return to the unloaded module code */
}
in the main kernel. In fact if you were bored you could build this on the kernel
stack ;)
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This archive was generated by hypermail 2b29 : Thu Nov 23 2000 - 21:00:10 EST