Re: [PATCH] rcutorture: Avoid problematic critical section nesting on RT

Sebastian Andrzej Siewior
2021-08-19T18:45:28Z

On 2021-08-19 11:20:35 [-0700], Paul E. McKenney wrote:
> > This piece above, I don't understand. I had it running for a while and
> > it didn't explode. Let me try TREE01 for 30min without that piece.
>
> This might be historical. There was a time when interrupts being
> disabled across rcu_read_unlock() meant that preemption had to have
> been disabled across the entire RCU read-side critical section.
>
> I am not seeing a purpose for it now, but I could easily be missing
> something, especially given my tenuous grasp of RT.

Okay. So the 30min test didn't trigger any warnings…

> Either way, looking forward to the next version!

Good. So if you liked what you have seen then I'm going to resubmit the
above as a proper patch then.
Thanks!

> Thanx, Paul

Sebastian