Re: [PATCH, RFC] v7 scalable classic RCU implementation

[Manfred Spraul <manfred@colorfullife.com>]

Paul E. McKenney wrote:
> Hmmm...  Looks like rcu_pending is also always called with its cpu
> parameter set to the current CPU, and same for rcu_needs_cpu().
> And given that all the external uses of rcu_check_callbacks() are
> of the following form:
>
> 	if (rcu_pending(cpu))
> 		rcu_check_callbacks(cpu, whatever);
>
>
> perhaps rcu_pending() should be an internal-to-RCU API invoked from
> rcu_check_callbacks().
>
> Thoughts?
>   
 From my point of view: Yes, change it.

In the long run, I'd like to move the stall detector code to rcupdate.c, 
with an 'rcu_cpu_missing' callback. That one would need a cpu flag, but 
that's a new function.

--
    Manfred