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    SubjectRe: [PATCH, RFC] v6 scalable classic RCU implementation

    * 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.

    Ingo


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