On Mon, Mar 12, 2018 at 03:11:07PM +0100, Sebastian Andrzej Siewior wrote: > I assumed you complained about the unbounded list-walk with interrupts > disabled (which is cheap but unbound is unbound). So here I suggested I > move 20 entries off that list a time and enable interrupts again so an > interrupt could set need_resched. > But if we get invoked !preemptible then nothing changes.
Right, so any !preemptible invocation of wake_all is bad.
