Messages in this thread | | | Date | Mon, 12 Mar 2018 15:29:33 +0100 | From | Peter Zijlstra <> | Subject | Re: Warning from swake_up_all in 4.14.15-rt13 non-RT |
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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.
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