Re: cpufreq: powernow-k8 frequency transitions question

[Gunter Ohrner <G.Ohrner@post.rwth-aachen.de>]

Andi Kleen wrote:
>> I already asked this question on linux-kernel@vger.kernel.org but maybe
>> this list would be a more appropriate place...
> The proceedings of the Ottawa Linux Symposium 2004 (available online)
> have a detailed paper on the powernow-k8 driver.

Ah, thanks. I found it, read it, and will soon compare the description to
the current implementation.
From what I saw I already figured out the most important parts myself, as
the driver is rather readable, but the paper contained some interesting
additional details and reasons for some things I still wondered about.

>> How do the conservative/ondemand cpufreq governors cope with the kernel
>> advertising frequencies it cannot directly transition between?
> Step by step. The frequency/voltage transistion functions
> in powernow-k8.c go through them in loops.

Oh, ok, I must have missed that part in the driver, I will look for it.

Thanks a lot! :-)

Greetings,

  Gunter

-- 
The students were staring at her in the manner of those who have heard 
of the species 'female' but have never expected to get this close to 
one.        -- (Terry Pratchett, Soul Music)
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