Re: [PATCH RFC tip/core/rcu 1/2] rcu: suppress RCU lockdep warningsduring early boot

From: Ingo Molnar
Date: Tue Mar 02 2010 - 07:21:37 EST

* Paul E. McKenney <paulmck@xxxxxxxxxxxxxxxxxx> wrote:

> + if (!rcu_scheduler_active || !debug_locks)
> + return 1;
> + return lock_is_held(&rcu_lock_map);

> + if (!rcu_scheduler_active || !debug_locks)
> + return 1;
> + return lock_is_held(&rcu_bh_lock_map);

i guess there could be a common helper here?

Also, could we clear rcu_scheduler_active when we clear debug_locks? That way
only a single test is needed, a generic 'is lock debugging active'.

(Which test should probably be unlikely() as well?)

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