On Tue, May 10, 2022 at 04:07:23PM +0200, Sebastian Andrzej Siewior wrote: > On 2022-05-05 12:09:15 [-0700], Paul E. McKenney wrote: > > All good points! > > > > Some questions and comments below. > > > > Adding Sebastian on CC for his perspective. > > Thank you. > I may missing things, I tried to digest the thread… > > In my understanding: The boosting option is used to allow a SCHED_OTHER > task within a RCU section to allow to leave the RCU section while tasks > with higher priority occupy the CPU. > As far as the RCU callbacks are concerned, I'm not aware that it would > be beneficial to run them with an elevated priority. On SMP systems, > there is the suggestion to have a housekeeping CPU and to offload the > RCU callbacks to this CPU and no to bother the CPU with the RT workload. Agreed, even within RT, there are multiple ways to get this job done. Thanx, Paul
