[PATCH v8 0/8] Add support for devices in the Energy Model
Rafael J. Wysocki
rafael at kernel.org
Fri May 29 16:18:06 UTC 2020
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.
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