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    SubjectRe: [PATCH, RFC] v6 scalable classic RCU implementation
    On Thu, Sep 25, 2008 at 09:26:07AM +0200, Ingo Molnar wrote:
    >
    > * Paul E. McKenney <paulmck@linux.vnet.ibm.com> wrote:
    >
    > > +config RCU_CPU_STALL_DETECTOR
    > > + bool "Check for stalled CPUs delaying RCU grace periods"
    > > + depends on CLASSIC_RCU || TREE_RCU
    > > + default n
    > > + help
    > > + This option causes RCU to printk information on which
    > > + CPUs are delaying the current grace period, but only when
    > > + the grace period extends for excessive time periods.
    > > +
    > > + Say Y if you want RCU to perform such checks.
    > > +
    > > + Say N if you are unsure.
    >
    > could you please send this bit separately, even if rcutree isnt finished
    > yet? Seems like a quite useful debug feature.

    Good point -- I guess I do need to implement the CLASSIC_RCU piece of
    this in any case.

    Thanx, Paul


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