Re: [GIT PULL rcu/next] rcu commits for 2.6.40

[Ingo Molnar]

* Ingo Molnar <mingo@xxxxxxx> wrote:

> > very clearly indicate that this is an RCU regression.
> 
> This might be the same one Yinghai found:
> 
>  e59fb3120bec: rcu: Decrease memory-barrier usage based on semi-formal proof
> 
> So with the config i sent it's definitely reproducible.

yes. And note that the system does not lock up, but boots up after a really 
long time - perhaps as a side-effect of very rare timer irqs driving forward 
the RCU state machine?

Thanks,

	Ingo
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