[RFC] powerpc: use ticket spin lock for !CONFIG_PPC_SPLPAR

[Kevin Hao]

On Thu, Mar 12, 2015 at 04:24:10PM +0100, Torsten Duwe wrote:
> But generally, which platforms would benefit most from this change?

In theory, the more cpus the platform has, the more serious the thundering
herd problem is. So the latest platforms which has more cpus would benefit
most.

Thanks,
Keivn
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