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[0/4] Add support for devices in the Energy Model

Message ID 20200116152032.11301-1-lukasz.luba@arm.com
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Series Add support for devices in the Energy Model | expand

Message

Lukasz Luba Jan. 16, 2020, 3:20 p.m. UTC 
From: Lukasz Luba <lukasz.luba@arm.com>

Hi all,

This patch set introduces support for devices in the Energy Model (EM) framework.
It will unify the power model for thermal subsystem and make it simpler.
The 1st patch refactors EM framework and adds support for devices. The 2nd patch
changes dev_pm_opp_of_register_em() in OPP/OF which now should take as an
argument struct device pointer. It touches a few trees (OMAP, NXP, mediatek) updating
their CPUfreq drivers to the new interface.
Patch 3 changes thermal devfreq cooling removing old code for calculating local power
table. It simplifies the code and uses EM for requested power calculation.
Last patch 4 is based on 'drm-misc-next' and adds EM to Panfrost driver.

The patch set is based on v5.5-rc6 tag (excluding last patch).

Regards,
Lukasz Luba

Lukasz Luba (4):
  PM / EM: and devices to Energy Model
  OPP: change parameter to device pointer in dev_pm_opp_of_register_em()
  thermal: devfreq_cooling: Refactor code and switch to use Energy Model
  drm/panfrost: Register to the Energy Model with devfreq device

 Documentation/power/energy-model.rst        |  67 ++--
 drivers/cpufreq/cpufreq-dt.c                |   2 +-
 drivers/cpufreq/imx6q-cpufreq.c             |   2 +-
 drivers/cpufreq/mediatek-cpufreq.c          |   2 +-
 drivers/cpufreq/omap-cpufreq.c              |   2 +-
 drivers/cpufreq/qcom-cpufreq-hw.c           |   2 +-
 drivers/cpufreq/scmi-cpufreq.c              |  11 +-
 drivers/cpufreq/scpi-cpufreq.c              |   2 +-
 drivers/gpu/drm/panfrost/panfrost_devfreq.c |   3 +
 drivers/opp/of.c                            |  43 +--
 drivers/thermal/cpu_cooling.c               |  10 +-
 drivers/thermal/devfreq_cooling.c           | 397 +++++++------------
 include/linux/devfreq_cooling.h             |  17 -
 include/linux/energy_model.h                | 108 ++++--
 include/linux/pm_opp.h                      |  13 +-
 include/trace/events/thermal.h              |  19 +-
 kernel/power/energy_model.c                 | 406 ++++++++++++++++----
 kernel/sched/sched.h                        |   2 +-
 kernel/sched/topology.c                     |   4 +-
 19 files changed, 631 insertions(+), 481 deletions(-)