Messages in this thread | | | Date | Thu, 3 May 2018 16:44:50 +0200 | From | Peter Zijlstra <> | Subject | Re: cpu stopper threads and load balancing leads to deadlock |
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On Thu, May 03, 2018 at 04:16:55PM +0200, Mike Galbraith wrote: > On Thu, 2018-05-03 at 15:56 +0200, Peter Zijlstra wrote: > > On Thu, May 03, 2018 at 03:32:39PM +0200, Mike Galbraith wrote: > > > > > Dang. With $subject fix applied as well.. > > > > That's a NO then... :-( > > Could say who cares about oddball offline wakeup stat. <cringe>
Yeah, nobody.. but I don't want to have to change the wakeup code to deal with this if at all possible. That'd just add conditions that are 'always' false, except in this exceedingly rare circumstance.
So ideally we manage to tell RCU that it needs to pay attention while we're doing this here thing, which is what I thought RCU_NONIDLE() was about.
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