Re: [PATCH] Markers : fix reentrancy

[Ingo Molnar]

* Mathieu Desnoyers <mathieu.desnoyers@xxxxxxxxxx> wrote:

> Lai Jiangshan <laijs@xxxxxxxxxxxxxx> wrote :
> > marker_synchronize_unregister must be called _also_ between unregistration
> > and destruction the data that unregistration-ed probes need to make sure
> > there is no caller executing a probe when it's data is destroyed.
> > 
> 
> Ah, you're right. I looked again through your patch description and I
> think using a :
> 
> 
> if (entry->rcu_pending)
>                 rcu_barrier_sched();
> 
> After each time the markers_mutex is taken would keep the fast batch 
> registration/unregistration and fix the reentrancy problem. The 
> following patch should address the problem.

could you please send a delta patch against tip/master? Lai's patch is 
already applied and is tested. Thanks,

	Ingo
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