On Thu, Sep 25, 2008 at 09:26:07AM +0200, Ingo Molnar wrote:
quoted text
> 
> * 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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