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Message-ID: <8704d3d2-08ab-4316-8d4b-f9b8f1878a19@arm.com>
Date: Wed, 7 Feb 2024 11:49:09 +0000
From: Lukasz Luba <lukasz.luba@....com>
To: "Rafael J. Wysocki" <rafael@...nel.org>
Cc: dietmar.eggemann@....com, linux-pm@...r.kernel.org, rui.zhang@...el.com,
amit.kucheria@...durent.com, amit.kachhap@...il.com,
daniel.lezcano@...aro.org, viresh.kumar@...aro.org, len.brown@...el.com,
pavel@....cz, mhiramat@...nel.org, qyousef@...alina.io,
linux-kernel@...r.kernel.org, wvw@...gle.com, xuewen.yan94@...il.com
Subject: Re: [PATCH v7 00/23] Introduce runtime modifiable Energy Model
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@....com> 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
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