linux-kernel - Re: [PATCH v8 0/8] Add support for devices in the Energy Model

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Message-ID: <8fca24a1-93f7-f859-bd1f-b7bf484737f4@arm.com>
Date:   Fri, 29 May 2020 16:00:47 +0100
From:   Lukasz Luba <lukasz.luba@....com>
To:     rjw@...ysocki.net
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Subject: Re: [PATCH v8 0/8] Add support for devices in the Energy Model

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?

Regards,
Lukasz