Re: rcu_preempt self-detected stall on CPU from 4.5-rc3, since 3.17

[Paul E. McKenney]

On Wed, Mar 23, 2016 at 06:25:50PM +0000, Chatre, Reinette wrote:
> Hi Paul,
> 
> On 2016-03-23, Paul E. McKenney wrote:
> > Please boot with the following parameters:
> > 
> > 	rcu_tree.rcu_kick_kthreads ftrace
> > trace_event=sched_waking,sched_wakeup,sched_wake_idle_without_ipi
> > 
> > Or was this run with tracing?  If so, less than three hours isn't too bad.
> 
> This was with tracing enabled, only missing the crucial
> rcu_tree.rcu_kick_kthreads

Good, then the condition did trigger with tracing enabled!  ;-)

							Thanx, Paul