Re: [PATCH RFC tip/core/rcu 11/11] rcu: move TREE_RCU from softirqto kthread

[Paul E. McKenney]

On Wed, Feb 23, 2011 at 08:23:50PM +0100, Peter Zijlstra wrote:
> On Wed, 2011-02-23 at 13:19 -0600, Christoph Lameter wrote:
> 
> > this_cpu_inc is already percpu atomic. On x86 it is an instruction that
> > cannot be interrupted nor preempted while in progress.
> 
> On x86, yes, but is this true for all architectures? I guess the
> fallback is implemented with local_irq_disable() which might be good
> enough for some but not for NMI usage.

Good point!  Thankfully, no worries about NMI usage in this piece of
code.  ;-)

							Thanx, Paul
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