On Mon, 2013-03-18 at 09:43 -0700, Tejun Heo wrote: > Making gcwq locks disable preemption would be much safer / easier, but > if that's not desirable, anything touching gcwq->idle_list would be a > good place to start - worker_enter_idle() and worker_leave_idle(). > Hmmm... ignoring CPU hotplug, I think those two might just do it. > Give it a try? How reproducible is the problem? Not very :-( I triggered it twice on a 40 CPU box. It can go approximately 1 month before it triggers. And the box we are testing on is currently a loaner, and we have it on extension right now. Which means we wont have it much longer. But perhaps that's the place to fix things. Thanks, -- Steve -- To unsubscribe from this list: send the line "unsubscribe linux-rt-users" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html