Re: [PATCH 0/2] powercap: Introduce generic hierarchy helpers and selftests

[Daniel Lezcano]

Hi Rafael,

On 8/6/26 13:01, Daniel Lezcano wrote:
> Powercap controllers frequently expose a hierarchy of power zones (for
> example package, clusters and CPUs). Until now, each driver had to
> implement its own hierarchy traversal, parent lookup, error handling and
> teardown logic.
>
> This series introduces a generic hierarchy description and helper
> functions allowing a controller to instantiate and destroy an entire
> powercap hierarchy from a static description. The framework takes care of
> duplicating the hierarchy description, rebasing parent pointers,
> creating zones in dependency order and performing the appropriate
> rollback and cleanup on errors.
>
> The series also adds a kselftest exercising the new API by creating a
> synthetic hierarchy, validating the exported sysfs hierarchy and
> attributes, and ensuring that all resources are correctly released when
> the hierarchy is destroyed.
>
> The patches are organized as follows:
>
> 1. powercap: Add generic zone hierarchy creation helpers
> 2. selftests/powercap: Add powercap hierarchy creation API tests
>
> The API was primarily motivated by the recently posted SPEL series and
> also provides a migration path for DTPM to use the same generic
> infrastructure instead of maintaining its own hierarchy handling.
>
> Link: SPEL cover letter <https://lore.kernel.org/lkml/20260702-qcom_spel_driver_upstream-v3-0-434d50f0c5b0@xxxxxxxxxxxxxxxx/>
>
> Daniel Lezcano (2):
> powercap: Add generic zone hierarchy creation helpers
> selftests/powercap: Add powercap hierarchy creation API tests
>
> --
It was easy to migrate DTPM to this API and AFAICT Manaf was able to 
migrate also its series to this new API.

Is it possible to consider it for merging ?

Thanks

  -- Daniel

[1] 
https://lore.kernel.org/all/20260819165605.1398880-1-daniel.lezcano@xxxxxxxxxxxxxxxx/

[2] 
https://lore.kernel.org/all/20260702-qcom_spel_driver_upstream-v3-0-434d50f0c5b0@xxxxxxxxxxxxxxxx/