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

From: Manfred Spraul
Date: Wed Oct 22 2008 - 14:39:29 EST

Paul E. McKenney wrote:
Only once per such CPU every grace period -- seems in the noise to me.
But I should revisit, as I have changed things quite a bit since I
made that decision many weeks ago. ;-)

Another small point:
Does your implementation support rcu_check_callbacks() with cpu != smp_processor_id()?
I don't think my locking would support it properly.
- cpu != smp_processor_id() doesn't work.
- stack space for a useless parameter.
- the explicit cpu parameter prevents the rcu code from using get_cpu_var().

What about modifying the rcu_check_callbacks() prototype? I'd propose to remove the cpu parameter.

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