On Tue, Jun 23, 2020 at 01:55:08PM -0700, Paul E. McKenney wrote: [..] > > Just for my understanding, cond_resched_tasks_rcu_qs() may not help here > > because preemption is not disabled right? Still I see no harm in using it > > here either as it may give a slight speed up for tasks-RCU. > > The RCU-tasks stall-warning interval is ten minutes, and I have not yet > seen evidence that we are getting close to that. If we do, then yes, > a cond_resched_tasks_rcu_qs() might be in this code's future. But it > does add overhead, so we need to see the evidence first. Yes, true about that overhead. Ok, this is fine with me too, thanks :) - Joel
