From: Lukasz Luba <lukasz.luba@arm.com> To: linux-kernel@vger.kernel.org, linux-pm@vger.kernel.org Cc: daniel.lezcano@linaro.org, amitk@kernel.org, rui.zhang@intel.com, lukasz.luba@arm.com, viresh.kumar@linaro.org, rafael@kernel.org, dietmar.eggemann@arm.com, nm@ti.com, sboyd@kernel.org, sudeep.holla@arm.com, cristian.marussi@arm.com, matthias.bgg@gmail.com, linux-mediatek@lists.infradead.org, linux-arm-kernel@lists.infradead.org Subject: [PATCH 0/4] Energy Model power in micro-Watts and SCMI v3.1 alignment Date: Wed, 22 Jun 2022 15:57:58 +0100 [thread overview] Message-ID: <20220622145802.13032-1-lukasz.luba@arm.com> (raw) Hi all, This is a patch set which changes Energy Model power values scale to micro-Watts. It also upgrades the SCMI performance layer + scmi-cpufreq driver to leverage the SCMI v3.1 spec and process micro-Watts power values coming from FW. The higher precision in EM power field solves an issue of a rounding error, which then can be misinterpreted as 'inefficient OPP'. An example rounding issue calculation is present in patch 1/4 description. Regards, Lukasz Luba Lukasz Luba (4): PM: EM: convert power field to micro-Watts precision and align drivers Documentation: EM: Switch to micro-Watts scale firmware: arm_scmi: Get detailed power scale from perf cpufreq: scmi: Support the power scale in micro-Watts in SCMI v3.1 Documentation/power/energy-model.rst | 14 +++--- drivers/cpufreq/mediatek-cpufreq-hw.c | 7 +-- drivers/cpufreq/scmi-cpufreq.c | 15 ++++++- drivers/firmware/arm_scmi/perf.c | 18 +++++--- drivers/opp/of.c | 15 ++++--- drivers/powercap/dtpm_cpu.c | 5 +-- drivers/thermal/cpufreq_cooling.c | 13 +++++- drivers/thermal/devfreq_cooling.c | 19 ++++++-- include/linux/energy_model.h | 63 ++++++++++++++++++++------- include/linux/scmi_protocol.h | 8 +++- kernel/power/energy_model.c | 31 ++++++++----- 11 files changed, 146 insertions(+), 62 deletions(-) -- 2.17.1
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From: Lukasz Luba <lukasz.luba@arm.com> To: linux-kernel@vger.kernel.org, linux-pm@vger.kernel.org Cc: daniel.lezcano@linaro.org, amitk@kernel.org, rui.zhang@intel.com, lukasz.luba@arm.com, viresh.kumar@linaro.org, rafael@kernel.org, dietmar.eggemann@arm.com, nm@ti.com, sboyd@kernel.org, sudeep.holla@arm.com, cristian.marussi@arm.com, matthias.bgg@gmail.com, linux-mediatek@lists.infradead.org, linux-arm-kernel@lists.infradead.org Subject: [PATCH 0/4] Energy Model power in micro-Watts and SCMI v3.1 alignment Date: Wed, 22 Jun 2022 15:57:58 +0100 [thread overview] Message-ID: <20220622145802.13032-1-lukasz.luba@arm.com> (raw) Hi all, This is a patch set which changes Energy Model power values scale to micro-Watts. It also upgrades the SCMI performance layer + scmi-cpufreq driver to leverage the SCMI v3.1 spec and process micro-Watts power values coming from FW. The higher precision in EM power field solves an issue of a rounding error, which then can be misinterpreted as 'inefficient OPP'. An example rounding issue calculation is present in patch 1/4 description. Regards, Lukasz Luba Lukasz Luba (4): PM: EM: convert power field to micro-Watts precision and align drivers Documentation: EM: Switch to micro-Watts scale firmware: arm_scmi: Get detailed power scale from perf cpufreq: scmi: Support the power scale in micro-Watts in SCMI v3.1 Documentation/power/energy-model.rst | 14 +++--- drivers/cpufreq/mediatek-cpufreq-hw.c | 7 +-- drivers/cpufreq/scmi-cpufreq.c | 15 ++++++- drivers/firmware/arm_scmi/perf.c | 18 +++++--- drivers/opp/of.c | 15 ++++--- drivers/powercap/dtpm_cpu.c | 5 +-- drivers/thermal/cpufreq_cooling.c | 13 +++++- drivers/thermal/devfreq_cooling.c | 19 ++++++-- include/linux/energy_model.h | 63 ++++++++++++++++++++------- include/linux/scmi_protocol.h | 8 +++- kernel/power/energy_model.c | 31 ++++++++----- 11 files changed, 146 insertions(+), 62 deletions(-) -- 2.17.1 _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
next reply other threads:[~2022-06-22 14:59 UTC|newest] Thread overview: 40+ messages / expand[flat|nested] mbox.gz Atom feed top 2022-06-22 14:57 Lukasz Luba [this message] 2022-06-22 14:57 ` [PATCH 0/4] Energy Model power in micro-Watts and SCMI v3.1 alignment Lukasz Luba 2022-06-22 14:57 ` [PATCH 1/4] PM: EM: convert power field to micro-Watts precision and align drivers Lukasz Luba 2022-06-22 14:57 ` Lukasz Luba 2022-07-05 9:09 ` Daniel Lezcano 2022-07-05 9:09 ` Daniel Lezcano 2022-07-06 9:05 ` Lukasz Luba 2022-07-06 9:05 ` Lukasz Luba 2022-06-22 14:58 ` [PATCH 2/4] Documentation: EM: Switch to micro-Watts scale Lukasz Luba 2022-06-22 14:58 ` Lukasz Luba 2022-07-05 9:10 ` Daniel Lezcano 2022-07-05 9:10 ` Daniel Lezcano 2022-07-06 9:06 ` Lukasz Luba 2022-07-06 9:06 ` Lukasz Luba 2022-06-22 14:58 ` [PATCH 3/4] firmware: arm_scmi: Get detailed power scale from perf Lukasz Luba 2022-06-22 14:58 ` Lukasz Luba 2022-06-22 15:53 ` Sudeep Holla 2022-06-22 15:53 ` Sudeep Holla 2022-06-23 7:50 ` Lukasz Luba 2022-06-23 7:50 ` Lukasz Luba 2022-06-22 14:58 ` [PATCH 4/4] cpufreq: scmi: Support the power scale in micro-Watts in SCMI v3.1 Lukasz Luba 2022-06-22 14:58 ` Lukasz Luba 2022-06-22 15:55 ` Sudeep Holla 2022-06-22 15:55 ` Sudeep Holla 2022-07-05 9:25 ` Daniel Lezcano 2022-07-05 9:25 ` Daniel Lezcano 2022-07-06 9:08 ` Lukasz Luba 2022-07-06 9:08 ` Lukasz Luba 2022-06-29 9:49 ` [PATCH 0/4] Energy Model power in micro-Watts and SCMI v3.1 alignment Lukasz Luba 2022-06-29 9:49 ` Lukasz Luba 2022-06-29 9:53 ` Viresh Kumar 2022-06-29 9:53 ` Viresh Kumar 2022-06-29 10:00 ` Lukasz Luba 2022-06-29 10:00 ` Lukasz Luba 2022-06-29 10:01 ` Viresh Kumar 2022-06-29 10:01 ` Viresh Kumar 2022-06-29 10:21 ` Daniel Lezcano 2022-06-29 10:21 ` Daniel Lezcano 2022-06-29 10:24 ` Lukasz Luba 2022-06-29 10:24 ` Lukasz Luba
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