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    SubjectRe: CONFIG_NO_HZ_FULL + CONFIG_PREEMPT_RT_FULL = nogo
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    On Fri, 2013-11-08 at 06:03 -0800, Paul E. McKenney wrote: 
    > On Fri, Nov 08, 2013 at 02:26:28PM +0100, Mike Galbraith wrote:
    > > On Fri, 2013-11-08 at 04:37 -0800, Paul E. McKenney wrote:
    > > > On Fri, Nov 08, 2013 at 08:31:20AM +0100, Mike Galbraith wrote:
    > > > > On Thu, 2013-11-07 at 19:23 -0800, Paul E. McKenney wrote:
    > > > >
    > > > > > An untested patch that gets rid of the RCU_SOFTIRQs in this case is below.
    > > > >
    > > > > Yup, toasted.
    > > >
    > > > You lost me on this one. If my patch broke your system, any chance of
    > > > any diagnostic information?
    > >
    > > No no, the RCU_SOFTIRQs are toast, history, gone.
    >
    > Ah, I do like that outcome much better! ;-) The scheduling-clock
    > interrupts are gone (or at least reduced) as well?

    No, tick shutdown needs encouragement to succeed, but there were no
    RCU_SOFTIRQs on rcu_nocbs= CPUs.

    > And does this mean that I can have your Tested-by?

    Tested-by: Mike Galbraith <bitbucket@online.de>



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