Re: [PATCH, RFC] v6 scalable classic RCU implementation

[Ingo Molnar]

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

> Attached is an updated patch to Classic RCU that applies a hierarchy, 
> greatly reducing the contention on the top-level lock for large 
> machines.  This passes 10-hour concurrent rcutorture and 
> online-offline testing on 128-CPU ppc64 without dynticks enabled, and 
> exposes some timekeeping bugs in presence of dynticks (exciting 
> working on a system where "sleep 1" hangs until interrupted...).

i'm wondering about those timekeeping bugs. Do you have an idea what's 
it about and does it affect mainline?

	Ingo
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