On Sat, Nov 21, 2015 at 01:02:02AM -0800, Lianwei Wang wrote: > The rcu_idle_endter may call wakeup_softirqd to set the need resched > flag on idle process. But if we don't check it after that, then the > cpu will enter idle state with RESCHED flag set and can not be woken > up by wakeup/resched call anymore. Fair enough; but which cpuidle driver did you observe that with? All the ones I checked test for need_resched again after this.
