Messages in this thread | | | Date | Fri, 19 Dec 2008 02:29:35 +0100 | From | Andi Kleen <> | Subject | Re: [PATCH -tip] v9 scalable classic RCU implementation |
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On Thu, Dec 18, 2008 at 02:54:03PM -0800, Paul E. McKenney wrote: > On Tue, Dec 02, 2008 at 05:36:59PM -0800, Paul E. McKenney wrote: > > On Wed, Dec 03, 2008 at 02:10:42AM +0100, Andi Kleen wrote: > > > > On Power, I see a hang in all three flavors of RCU when CPU hotplug > > > > is enabled and dynticks is not. I have not yet seen this hang on x86. > > > > On Power, the hang occurs in the CPU-offline code, and is identical to > > > > the hangs I was seeing in 2.6.27, except that "sleep 1" does not hang > > > > in recent 2.6.28 versions. So the timeout is apparently failing to fire > > > > (or being ignored) for some other reason. > > > > > > > > Is this similar to what you are seeing on x86? > > > > > > Yes it is. > > > > OK, then I will consider them to be the same bug for the moment. > > Question based on some further testing over here... > > Do you still get failures if you refrain from offlining CPU 0?
Yes, i never offlined cpu 0 in fact.
-Andi
-- ak@linux.intel.com
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