From: Quentin Perret <qperret@google•com>
To: Dietmar Eggemann <dietmar.eggemann@arm•com>
Cc: nm@ti•com, juri.lelli@redhat•com, daniel.lezcano@linaro•org,
peterz@infradead•org, viresh.kumar@linaro•org,
dri-devel@lists•freedesktop.org, bjorn.andersson@linaro•org,
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festevam@gmail•com, Morten.Rasmussen@arm•com, robh@kernel•org,
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agross@kernel•org, b.zolnierkie@samsung•com,
steven.price@arm•com, cw00.choi@samsung•com, mingo@redhat•com,
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mgorman@suse•de, daniel@ffwll•ch, linux-pm@vger•kernel.org,
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Lukasz Luba <lukasz.luba@arm•com>
Subject: Re: [PATCH 1/4] PM / EM: and devices to Energy Model
Date: Tue, 21 Jan 2020 09:37:55 +0000 [thread overview]
Message-ID: <20200121093755.GA157387@google.com> (raw)
In-Reply-To: <c9910c74-ab47-0c78-a1c7-4f3978e1dd09@arm.com>
On Tuesday 21 Jan 2020 at 10:10:16 (+0100), Dietmar Eggemann wrote:
> True. But then we hard-code that a CPU device performance domain can
> only be a frequency domain (which is true today).
>
> The task scheduler (build_perf_domains()) and thermal are already using
> cpufreq_cpu_get() to access the cpufreq policy. Now the EM framework
> would too for CPU devices. I assume that could work with a couple of
> adaptations in Documentation/power/energy-model.rst.
Agreed, and if one day we have a real use case where the pd mask and the
cpufreq policy mask need to be different, we'll do the necessary
changes. But until then I don't see a reason to object to Lukasz'
proposal. So +1 from me.
Thanks,
Quentin
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next prev parent reply other threads:[~2020-01-21 9:38 UTC|newest]
Thread overview: 23+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-01-16 15:20 [PATCH 0/4] Add support for devices in the Energy Model lukasz.luba
2020-01-16 15:20 ` [PATCH 1/4] PM / EM: and devices to " lukasz.luba
2020-01-17 10:54 ` Quentin Perret
2020-01-20 14:52 ` Lukasz Luba
2020-01-20 15:09 ` Quentin Perret
2020-01-20 18:27 ` Dietmar Eggemann
2020-01-20 18:38 ` Lukasz Luba
2020-01-21 9:10 ` Dietmar Eggemann
2020-01-21 9:37 ` Quentin Perret [this message]
2020-01-21 9:31 ` Quentin Perret
2020-01-20 14:53 ` Dietmar Eggemann
2020-01-20 15:11 ` Dietmar Eggemann
2020-01-20 15:36 ` Lukasz Luba
2020-01-20 15:27 ` Lukasz Luba
2020-01-20 15:28 ` Quentin Perret
2020-01-20 16:20 ` Lukasz Luba
2020-01-21 10:08 ` Quentin Perret
2020-01-21 10:49 ` Lukasz Luba
2020-01-16 15:20 ` [PATCH 2/4] OPP: change parameter to device pointer in dev_pm_opp_of_register_em() lukasz.luba
2020-01-16 15:20 ` [PATCH 3/4] thermal: devfreq_cooling: Refactor code and switch to use Energy Model lukasz.luba
2020-01-21 17:11 ` Steven Rostedt
2020-01-22 9:35 ` Lukasz Luba
2020-01-16 15:20 ` [PATCH 4/4] drm/panfrost: Register to the Energy Model with devfreq device lukasz.luba
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