From: Daniel Lezcano <daniel.lezcano@linaro.org>
To: Quentin Perret <quentin.perret@arm.com>,
edubezval@gmail.com, rui.zhang@intel.com, javi.merino@kernel.org,
viresh.kumar@linaro.org, amit.kachhap@gmail.com,
rjw@rjwysocki.net, will.deacon@arm.com, catalin.marinas@arm.com
Cc: linux-pm@vger.kernel.org, linux-kernel@vger.kernel.org,
mka@chromium.org, ionela.voinescu@arm.com,
dietmar.eggemann@arm.com, linux-arm-kernel@lists.infradead.org
Subject: Re: [PATCH v4 1/3] arm64: defconfig: Enable CONFIG_ENERGY_MODEL
Date: Wed, 15 May 2019 10:46:09 +0200 [thread overview]
Message-ID: <2f598ea3-752d-0f1d-fd33-f07cda3b7bd0@linaro.org> (raw)
In-Reply-To: <20190515082318.7993-2-quentin.perret@arm.com>
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
>
--
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next prev parent reply other threads:[~2019-05-15 8:46 UTC|newest]
Thread overview: 19+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-05-15 8:23 [PATCH v4 0/3] Make IPA use PM_EM Quentin Perret
2019-05-15 8:23 ` [PATCH v4 1/3] arm64: defconfig: Enable CONFIG_ENERGY_MODEL Quentin Perret
2019-05-15 8:46 ` Daniel Lezcano [this message]
2019-05-15 9:22 ` Quentin Perret
2019-05-15 8:23 ` [PATCH v4 2/3] PM / EM: Expose perf domain struct Quentin Perret
2019-05-15 9:06 ` Daniel Lezcano
2019-05-15 9:17 ` Quentin Perret
2019-05-15 9:56 ` Daniel Lezcano
2019-05-15 10:07 ` Quentin Perret
2019-05-15 10:16 ` Daniel Lezcano
2019-05-15 10:22 ` Viresh Kumar
2019-05-15 10:40 ` Quentin Perret
2019-05-15 10:46 ` Quentin Perret
2019-05-15 10:51 ` Daniel Lezcano
2019-05-15 11:01 ` Quentin Perret
2019-05-15 11:07 ` Daniel Lezcano
2019-05-15 10:54 ` Daniel Lezcano
2019-05-15 10:57 ` Quentin Perret
2019-05-15 8:23 ` [PATCH v4 3/3] thermal: cpu_cooling: Migrate to using the EM framework Quentin Perret
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