On 01/18/2016 07:13 AM, Juri Lelli wrote:

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DT solves these issues and would be the perfect place for this - we are

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defining the compute capacity of a CPU which is a property of the
hardware. However there are a couple things forcing us to compromise.
One is that the amount and detail of information required to adequately
capture the computational abilities of a CPU across all possible
workloads seem onerous to collect and enumerate. The second is that even
if we were willing to undertake that, CPU vendors probably won't be
forthcoming with that information.

You mean because they won't publish performance data of their hw?

More specific things like IPC and other architectural details that could
comprise a precise physical definition of a CPU that would meet the
ideal goals of a device tree definition.

But we already use per platform normalized values (as you are proposing
below). So that a platform to platform comparison doesn't make sense.

Yeah I'm just advocating for that strategy here.

cheers,
Steve