Re: [PATCH v7 00/23] Introduce runtime modifiable Energy Model

[Lukasz Luba]

On 2/7/24 10:31, Rafael J. Wysocki wrote:
> Hi Lukasz,
>
> On Wed, Feb 7, 2024 at 10:15 AM Lukasz Luba <lukasz.luba@xxxxxxx> wrote:
> > Hi Rafael,
> >
> > On 1/17/24 09:56, Lukasz Luba wrote:
> > > Hi all,
> > >
> > > This patch set adds a new feature which allows to modify Energy Model (EM)
> > > power values at runtime. It will allow to better reflect power model of
> > > a recent SoCs and silicon. Different characteristics of the power usage
> > > can be leveraged and thus better decisions made during task placement in EAS.
> >
> > [snip]
> >
> > > Lukasz Luba (23):
> > >     PM: EM: Add missing newline for the message log
> > >     PM: EM: Extend em_cpufreq_update_efficiencies() argument list
> > >     PM: EM: Find first CPU active while updating OPP efficiency
> > >     PM: EM: Refactor em_pd_get_efficient_state() to be more flexible
> > >     PM: EM: Introduce em_compute_costs()
> > >     PM: EM: Check if the get_cost() callback is present in
> > >       em_compute_costs()
> > >     PM: EM: Split the allocation and initialization of the EM table
> > >     PM: EM: Introduce runtime modifiable table
> > >     PM: EM: Use runtime modified EM for CPUs energy estimation in EAS
> > >     PM: EM: Add functions for memory allocations for new EM tables
> > >     PM: EM: Introduce em_dev_update_perf_domain() for EM updates
> > >     PM: EM: Add em_perf_state_from_pd() to get performance states table
> > >     PM: EM: Add performance field to struct em_perf_state and optimize
> > >     PM: EM: Support late CPUs booting and capacity adjustment
> > >     PM: EM: Optimize em_cpu_energy() and remove division
> > >     powercap/dtpm_cpu: Use new Energy Model interface to get table
> > >     powercap/dtpm_devfreq: Use new Energy Model interface to get table
> > >     drivers/thermal/cpufreq_cooling: Use new Energy Model interface
> > >     drivers/thermal/devfreq_cooling: Use new Energy Model interface
> > >     PM: EM: Change debugfs configuration to use runtime EM table data
> > >     PM: EM: Remove old table
> > >     PM: EM: Add em_dev_compute_costs()
> > >     Documentation: EM: Update with runtime modification design
> > >
> > >    Documentation/power/energy-model.rst | 183 ++++++++++-
> > >    drivers/powercap/dtpm_cpu.c          |  39 ++-
> > >    drivers/powercap/dtpm_devfreq.c      |  34 +-
> > >    drivers/thermal/cpufreq_cooling.c    |  45 ++-
> > >    drivers/thermal/devfreq_cooling.c    |  49 ++-
> > >    include/linux/energy_model.h         | 165 ++++++----
> > >    kernel/power/energy_model.c          | 472 +++++++++++++++++++++++----
> > >    7 files changed, 819 insertions(+), 168 deletions(-)
> >
> > The patch set went through decent review. If you don't have any issues,
> > I will collect the tags and send the v8 which will be re-based on some
> > recent linux next (or please tell me your preferred branch).
>
> Blease base it on 6.8-rc3.

OK, thanks