[PATCH v8 0/8] Add support for devices in the Energy Model

Lukasz Luba lukasz.luba at arm.com
Fri May 29 17:05:57 UTC 2020

On 5/29/20 5:18 PM, Rafael J. Wysocki wrote:
> On Fri, May 29, 2020 at 5:01 PM Lukasz Luba <lukasz.luba at arm.com> wrote:
>> Hi Rafael,
>> On 5/27/20 10:58 AM, Lukasz Luba wrote:
>>> Hi all,
>>> Background of this version:
>>> This is the v8 of the patch set and is has smaller scope. I had to split
>>> the series into two: EM changes and thermal changes due to devfreq
>>> dependencies. The patches from v7 9-14 which change devfreq cooling are
>>> going to be sent in separate patch series, just after this set get merged
>>> into mainline. These patches related to EM got acks and hopefully can go
>>> through linux-pm tree. The later thermal patches will go through thermal
>>> tree.
>>> The idea and purpose of the Energy Model framework changes:
>>> This patch set introduces support for devices in the Energy Model (EM)
>>> framework. It will unify the power model for thermal subsystem. It will
>>> make simpler to add support for new devices willing to use more
>>> advanced features (like Intelligent Power Allocation). Now it should
>>> require less knowledge and effort for driver developer to add e.g.
>>> GPU driver with simple energy model. A more sophisticated energy model
>>> in the thermal framework is also possible, driver needs to provide
>>> a dedicated callback function. More information can be found in the
>>> updated documentation file.
>>> First 7 patches are refactoring Energy Model framework to add support
>>> of other devices that CPUs. They change:
>>> - naming convention from 'capacity' to 'performance' state,
>>> - API arguments adding device pointer and not rely only on cpumask,
>>> - change naming when 'cpu' was used, now it's a 'device'
>>> - internal structure to maintain registered devices
>>> - update users to the new API
>>> Patch 8 updates OPP framework helper function to be more generic, not
>>> CPU specific.
>>> The patch set is based on linux-pm branch linux-next 813946019dfd.
>> Could you take the patch set via your linux-pm?
> I can do that, but I didn't realize that it was targeted at me, so I
> need some more time to review the patches.
> Thanks!

No worries. Thank you for your time!


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