On Mon, Jul 09, 2018 at 07:29:32AM -0700, Paul E. McKenney wrote: > OK, so here are our options: > > 1. Add the RCU conditional to need_resched(), as David suggests. > Peter has concerns about overhead.
Not only overhead, its plain broken, because: 1) we keep preemption state in other places too 2) we check need_resched() in asm