Messages in this thread Patch in this message | | | Date | Thu, 28 Mar 2019 10:22:08 +0000 | From | Quentin Perret <> | Subject | Re: [PATCH 1/3] arm64: defconfig: Enable CONFIG_ENERGY_MODEL |
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On Thursday 28 Mar 2019 at 10:13:50 (+0000), 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'. > > Signed-off-by: Quentin Perret <quentin.perret@arm.com> > --- > arch/arm64/configs/defconfig | 1 + > 1 file changed, 1 insertion(+) > > diff --git a/arch/arm64/configs/defconfig b/arch/arm64/configs/defconfig > index 2d9c39033c1a..3c09bdaaefd3 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=n
Hmm, sorry I turned this to '=n' for testing and forgot to update the patch. This obviously should be '=y' ...
> CONFIG_ARM_CPUIDLE=y > CONFIG_CPU_FREQ=y > CONFIG_CPU_FREQ_STAT=y > -- > 2.21.0 >
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