On Friday 16 Oct 2020 at 13:48:33 (+0200), Daniel Lezcano wrote: > If the SCMI is returning abstract numbers, the thermal IPA governor will > use these numbers as a reference to mitigate the temperature at the > specified sustainable power which is expressed in mW in the DT. So it > does not work and we can not detect such conflict. > > That is why I'm advocating to keep mW for the energy model and make the > SCMI and DT power numbers incompatible. I think it's fair to say SCMI-provided number should only be compared to other SCMI-provided numbers, so +1 on that. But what I don't understand is why specifying the EM in mW helps with that? Can we not let the providers specify the unit? And then it's up to the clients to decide what they want to do. The scheduler wouldn't care, and IPA would have to check things are comparable, but all in all that should work out fine without a strong requirement on the actual unit. Also, I thought SCMI had a notion of sustained performance too, why can't we use that for IPA? Lukasz? Thanks. Quentin
