| Message ID | 20190515082318.7993-2-quentin.perret@arm.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | Make IPA use PM_EM | expand |
On 15/05/2019 10:23, Quentin Perret wrote: > The recently introduced Energy Model (EM) framework manages power cost > tables for the CPUs of the system. Its only user right now is the > scheduler, in the context of Energy Aware Scheduling (EAS). > > However, the EM framework also offers a generic infrastructure that > could replace subsystem-specific implementations of the same concepts, > as this is the case in the thermal framework. > > So, in order to prepare the migration of the thermal subsystem to use > the EM framework, enable it in the default arm64 defconfig, which is the > most commonly used architecture for IPA. This will also compile-in all > of the EAS code, although it won't be enabled by default -- EAS requires > to use the 'schedutil' CPUFreq governor while arm64 defaults to > 'performance'. > > Acked-by: Viresh Kumar <viresh.kumar@linaro.org> > Signed-off-by: Quentin Perret <quentin.perret@arm.com> Acked-by: Daniel Lezcano <daniel.lezcano@linaro.org> > --- > arch/arm64/configs/defconfig | 1 + > 1 file changed, 1 insertion(+) > > diff --git a/arch/arm64/configs/defconfig b/arch/arm64/configs/defconfig > index 2d9c39033c1a..4881a752ab3f 100644 > --- a/arch/arm64/configs/defconfig > +++ b/arch/arm64/configs/defconfig > @@ -97,6 +97,7 @@ CONFIG_XEN=y > CONFIG_COMPAT=y > CONFIG_HIBERNATION=y > CONFIG_WQ_POWER_EFFICIENT_DEFAULT=y > +CONFIG_ENERGY_MODEL=y > CONFIG_ARM_CPUIDLE=y > CONFIG_CPU_FREQ=y > CONFIG_CPU_FREQ_STAT=y >
On Wednesday 15 May 2019 at 10:46:09 (+0200), Daniel Lezcano wrote: > On 15/05/2019 10:23, Quentin Perret wrote: > > The recently introduced Energy Model (EM) framework manages power cost > > tables for the CPUs of the system. Its only user right now is the > > scheduler, in the context of Energy Aware Scheduling (EAS). > > > > However, the EM framework also offers a generic infrastructure that > > could replace subsystem-specific implementations of the same concepts, > > as this is the case in the thermal framework. > > > > So, in order to prepare the migration of the thermal subsystem to use > > the EM framework, enable it in the default arm64 defconfig, which is the > > most commonly used architecture for IPA. This will also compile-in all > > of the EAS code, although it won't be enabled by default -- EAS requires > > to use the 'schedutil' CPUFreq governor while arm64 defaults to > > 'performance'. > > > > Acked-by: Viresh Kumar <viresh.kumar@linaro.org> > > Signed-off-by: Quentin Perret <quentin.perret@arm.com> > > Acked-by: Daniel Lezcano <daniel.lezcano@linaro.org> Thanks ! Quentin
diff --git a/arch/arm64/configs/defconfig b/arch/arm64/configs/defconfig index 2d9c39033c1a..4881a752ab3f 100644 --- a/arch/arm64/configs/defconfig +++ b/arch/arm64/configs/defconfig @@ -97,6 +97,7 @@ CONFIG_XEN=y CONFIG_COMPAT=y CONFIG_HIBERNATION=y CONFIG_WQ_POWER_EFFICIENT_DEFAULT=y +CONFIG_ENERGY_MODEL=y CONFIG_ARM_CPUIDLE=y CONFIG_CPU_FREQ=y CONFIG_CPU_FREQ_STAT=y