Re: [PATCH tip/core/rcu 38/55] rcu: Prohibit grace periods duringearly boot

[Josh Triplett]

On Tue, Sep 06, 2011 at 11:00:32AM -0700, Paul E. McKenney wrote:
> From: Paul E. McKenney <paul.mckenney@xxxxxxxxxx>
> 
> Greater use of RCU during early boot (before the scheduler is operating)
> is causing RCU to attempt to start grace periods during that time, which
> in turn is resulting in both RCU and the callback functions attempting
> to use the scheduler before it is ready.
> 
> This commit prevents these problems by prohibiting RCU grace periods
> until after the scheduler has spawned the first non-idle task.

As with patch 36, this seems like a good candidate for jump labels.

- Josh Triplett
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