Re: NOHZ: WARNING: at arch/x86/kernel/smp.c:123native_smp_send_reschedule

From: Paul E. McKenney
Date: Wed May 15 2013 - 19:55:38 EST


On Thu, May 16, 2013 at 12:43:58AM +0200, Borislav Petkov wrote:
> On Wed, May 15, 2013 at 11:45:28AM -0700, Paul E. McKenney wrote:
> > Does the following patch help?
>
> Hmm, I just tried on 3.10-rc1
>
> CONFIG_NO_HZ_FULL_ALL=y
>
> on the one hand and then
>
> CONFIG_NO_HZ_FULL=y
> # CONFIG_NO_HZ_FULL_ALL is not set
>
> with "nohz_full=4-7 rcu_nocbs=4-7" on the cmdline and I don't see the
> splats anymore.
>
> Do I need to try something else?

I never saw the problem, so I have to defer to you on this one. I will
hold off on the patch unless the problem shows up again.

Thanx, Paul

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