Re: Scenario TREE07 with CONFIG_PREEMPT_DYNAMIC=n?

Paul E. McKenney
2022-03-10T22:52:25Z

On Thu, Mar 10, 2022 at 11:41:03PM +0100, Frederic Weisbecker wrote:
> On Thu, Mar 10, 2022 at 01:56:30PM -0800, Paul E. McKenney wrote:
> > Hello, Frederic,
> >
> > I recently added CONFIG_PREEMPT_DYNAMIC=n to the TREE07 file, and since
> > then am getting roughly one RCU CPU stall warning (or silent hang)
> > per few tens of hours of rcutorture testing on dual-socket systems.
> > The stall warnings feature starvation of RCU grace-period kthread.
> >
> > Any advice on debugging this?
>
> Oh, I'm testing that!

Even better, thank you! ;-)

Thanx, Paul