Re: [bug report] System hang up with Speedtouch USB hotplug

[Robert Love]

On Tue, 2001-11-20 at 07:37, Duncan Sands wrote:
> By the way, I find the preemptible kernel patch
> very helpful for debugging SMP problems on a
> uniprocessor machine.
> 
> I'm trying to debug the speedtouch kernel module
> crashes with SMP using it: the module oopses
> nicely with preempt too!

This is a nice unintended benefit of the preemptible kernel patch, eh? 
It also helps in your SMP debugging because you can see the lock depth
(how many locks are held) via current->preempt_count.  The preempt patch
will also prevent you from infinite looping in the kernel, assuming the
system is able to preempt itself.

	Robert Love