Messages in this thread | | | Date | Thu, 14 Jun 2012 09:48:25 -0700 | From | "Paul E. McKenney" <> | Subject | Re: [RFC patch 2/5] smpboot: Provide infrastructure for percpu hotplug threads |
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On Thu, Jun 14, 2012 at 06:19:50PM +0200, Thomas Gleixner wrote: > On Thu, 14 Jun 2012, Paul E. McKenney wrote: > > > On Thu, Jun 14, 2012 at 07:50:38AM -0700, Paul E. McKenney wrote: > > > On Thu, Jun 14, 2012 at 03:32:19PM +0200, Thomas Gleixner wrote: > > > > On Thu, 14 Jun 2012, Paul E. McKenney wrote: > > > > > On Thu, Jun 14, 2012 at 01:20:39PM +0200, Thomas Gleixner wrote: > > > > > > I gave it a quick shot, but I was not able to reproduce the hang yet. > > > > > > > > > > Really? I have a strictly Western-Hemisphere bug? ;-) > > > > > > > > I guess I need to fire up rcu torture to make it surface. > > > > > > A simple offline was triggering it for me. Perhaps some of my debug > > > code was inappropriate, will retry. > > > > And removing my debug code did the trick. I guess some of it was really > > just bug code. In any case, it now passes short rcutorture testing for > > me as well. > > > > However, I do see the splat shown below. The splat confuses me greatly, > > as I thought that this kthread should be affinitied to a single CPU and > > thus smp_processor_id() should refrain from splatting. I don't see any > > sort of "I broke affinity" message from the scheduler. > > Hmm. Is that reproducible ?
Twice so far, will retry.
Thanx, Paul
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