Re: [PATCH 3/6] mm: Use raw_cpu ops for determining current NUMAnode

[Christoph Lameter]

On Wed, 16 Oct 2013, Peter Zijlstra wrote:


> NAK; smp_processor_id() has the preemption checks; for consistently
> numa_node_id() should have them too, for the very same reason. Who's to
> say the node id is still valid when you return from this function? If
> we're preemptable we could've just been migrated away to another node.
>
> So please introduce raw_numa_node_id() and use that; all fully analogous
> to smp_processor_id().

The code that was here before the use of this_cpu ops did use
raw_smp_processor_id.

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