Re: [tip:core/rcu] rcu: Add diagnostic check for a possible CPU-hotplug race

Paul E. McKenney
2009-08-06T13:59:10Z

On Thu, Aug 06, 2009 at 02:29:35PM +0200, Ingo Molnar wrote:
>
> * Gautham R Shenoy <ego@in.ibm.com> wrote:
>
> > On Wed, Aug 05, 2009 at 06:26:45PM -0700, Paul E. McKenney wrote:
> > > On Mon, Aug 03, 2009 at 05:56:18AM -0700, Paul E. McKenney wrote:
> > > > On Mon, Aug 03, 2009 at 09:04:58AM +0200, Ingo Molnar wrote:
> > > > >
> > > > > i've attached the full serial bootlog with the warning in it. This
> > > > > should address your question about what the order of initialization
> > > > > is, right?
> > > >
> > > > It does, thank you! This problem really is happening during boot.
> > > >
> > > > > Let me know if you still would like me to run your diagnostic patch
> > > > > too.
> > > >
> > > > Now that you mention it, you should probably let me test it a bit first.
> > >
> > > And here is a tested and debugged version. Diagnostic only, not for
> > > inclusion, based on tip/core/rcu as of today (August 5th).
> > >
> > > Gautham, have you been able to reproduce on your machines?
> > > Still cannot here.
> >
> > I tried on a couple of machines yesterday, but I still couldn't
> > reproduce it with Ingo's config.
>
> Paul, should i try your latest diagnostic patch in -tip testing, to
> see whether it triggers any new warning?

Could you please?

Thanx, Paul