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From: Lukasz Luba <lukasz.luba@arm.com>
To: Daniel Lezcano <daniel.lezcano@linaro.org>
Cc: LKML <linux-kernel@vger.kernel.org>,
	Linux PM <linux-pm@vger.kernel.org>,
	amit daniel kachhap <amit.kachhap@gmail.com>,
	Viresh Kumar <viresh.kumar@linaro.org>,
	"Rafael J. Wysocki" <rafael@kernel.org>,
	Amit Kucheria <amitk@kernel.org>, Zhang Rui <rui.zhang@intel.com>,
	Dietmar Eggemann <dietmar.eggemann@arm.com>,
	Pierre.Gondois@arm.com, Stephen Boyd <swboyd@chromium.org>,
	Rajendra Nayak <rnayak@codeaurora.org>,
	Bjorn Andersson <bjorn.andersson@linaro.org>,
	Doug Anderson <dianders@chromium.org>,
	Matthias Kaehlcke <mka@chromium.org>,
	Vincent Guittot <vincent.guittot@linaro.org>
Subject: Re: [PATCH 1/2] thermal: cooling: Check Energy Model type in cpufreq_cooling and devfreq_cooling
Date: Thu, 17 Feb 2022 12:37:11 +0000	[thread overview]
Message-ID: <33bd6122-b4aa-1659-6063-95175a8748b3@arm.com> (raw)
In-Reply-To: <1812eadf-7924-5abd-857b-22b7dfdf8f7d@linaro.org>



On 2/17/22 12:33 PM, Daniel Lezcano wrote:
> On 17/02/2022 13:11, Lukasz Luba wrote:
> 
> [ ... ]
> 
>>> Why not make it more generic and replace the frequency by a 
>>> performance index, so it can be used by any kind of perf limiter?
>>
>> For that DT array, yes, it can be an index, so effectively it could be
>> a simple 1d array.
>>
>> something like:
>>
>> msm_gpu_energy_model: msm-gpu-energy-model {
>>      compatible = "energy-model"
>>      /* Values are sorted micro-Watts which correspond to each OPP
>>         or performance state. The total amount of them must match
>>         number of OPPs. */
>>      power-microwatt = <100000>,
>>              <230000>,
>>              <380000>,
>>              <600000>;
>> };
>>
>> then in gpu node instead of having 'dynamic-power-coefficient',
>> which is useless because voltage is missing, we would have
>> 'energy-model', like:
>>
>>      energy-model = <&msm_gpu_energy_model>;
>>
>>
>> If you agree to continue this topic. I will send an RFC so we could
>> further discuss this idea. This $subject doesn't fit well.
> 
> Yes, definitively I agree to continue on this topic.
> 
> 

Great! I'm going to craft something...

  reply	other threads:[~2022-02-17 12:37 UTC|newest]

Thread overview: 40+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2022-02-07  7:30 [PATCH 0/2] Ignore Energy Model with abstract scale in IPA and DTPM Lukasz Luba
2022-02-07  7:30 ` [PATCH 1/2] thermal: cooling: Check Energy Model type in cpufreq_cooling and devfreq_cooling Lukasz Luba
2022-02-08  0:50   ` Matthias Kaehlcke
2022-02-08  9:32     ` Lukasz Luba
2022-02-08 17:25       ` Matthias Kaehlcke
2022-02-09 11:16         ` Lukasz Luba
2022-02-09 22:17           ` Matthias Kaehlcke
2022-02-16 15:35             ` Lukasz Luba
2022-02-16 17:33               ` Doug Anderson
2022-02-16 22:13                 ` Matthias Kaehlcke
2022-02-16 22:43                   ` Lukasz Luba
2022-02-17  0:26                     ` Matthias Kaehlcke
2022-02-17 10:15                     ` Daniel Lezcano
2022-02-17  9:59                   ` Daniel Lezcano
2022-02-17 10:10                 ` Daniel Lezcano
2022-02-17 10:47                   ` Lukasz Luba
2022-02-17 11:28                     ` Daniel Lezcano
2022-02-17 12:11                       ` Lukasz Luba
2022-02-17 12:33                         ` Daniel Lezcano
2022-02-17 12:37                           ` Lukasz Luba [this message]
2022-02-17 16:46                         ` Matthias Kaehlcke
2022-02-17 16:37                     ` Doug Anderson
2022-02-17 17:14                       ` Matthias Kaehlcke
2022-02-17 18:05                         ` Lukasz Luba
2022-02-17 18:27                       ` Daniel Lezcano
2022-02-16 17:21       ` Doug Anderson
2022-02-16 23:28         ` Lukasz Luba
2022-02-17 16:50           ` Doug Anderson
2022-02-17 17:58             ` Lukasz Luba
2022-02-17 18:18   ` Lukasz Luba
2022-02-22 17:05     ` Lukasz Luba
2022-02-22 18:12       ` Daniel Lezcano
2022-02-22 18:31         ` Lukasz Luba
2022-02-22 22:10           ` Daniel Lezcano
2022-02-23  9:10             ` Lukasz Luba
2022-02-07  7:30 ` [PATCH 2/2] powercap: DTPM: Check Energy Model type for power values scale Lukasz Luba
2022-02-07 10:41 ` [PATCH 0/2] Ignore Energy Model with abstract scale in IPA and DTPM Daniel Lezcano
2022-02-07 11:44   ` Lukasz Luba
2022-02-08  7:39     ` Daniel Lezcano
2022-02-08  9:47       ` Lukasz Luba

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