Re: Scenario TREE07 with CONFIG_PREEMPT_DYNAMIC=n?

Frederic Weisbecker
2022-03-10T22:41:13Z

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!