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Subject: Re: [PATCH 2/2] powerpc: implement arch_scale_smt_power for Power7
From: Benjamin Herrenschmidt <benh@kernel.crashing.org>
To: Joel Schopp <jschopp@austin.ibm.com>
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Date: Sun, 24 Jan 2010 14:00:28 +1100
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On Wed, 2010-01-20 at 16:09 -0600, Joel Schopp wrote:
> I can turn that into a conditional branch (case statement) with a shift 
> for the common 1,2,4 cases which should cover all procs available today 
> falling back to a divide for any theoretical future processors that do 
> other numbers of threads. 

Look at the cputhreads.h implementation ... Today we only support
power-of-two numbers of threads.

Cheers,
Ben.