linux-kernel - Re: [PATCH] power: energy_model: Rework the depends on for CONFIG_ENERGY

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Message-ID: <7bc89310-c0db-4940-8cd7-86566ecb5c65@arm.com>
Date: Wed, 5 Mar 2025 09:50:53 +0000
From: Lukasz Luba <lukasz.luba@....com>
To: rafael@...nel.org
Cc: Xuewen Yan <xuewen.yan94@...il.com>, Xuewen Yan <xuewen.yan@...soc.com>,
 linux-pm@...r.kernel.org, len.brown@...el.com, linux-kernel@...r.kernel.org,
 ke.wang@...soc.com, jeson.gao@...soc.com, di.shen@...soc.com, pavel@....cz
Subject: Re: [PATCH] power: energy_model: Rework the depends on for
 CONFIG_ENERGY_MODEL

Hi Rafael,

On 2/13/25 02:18, Xuewen Yan wrote:
> Hi Rafael,
> 
> I noticed that this patch has not been merged yet. Do you have any comments?
> 
> BR
> 
> On Thu, Dec 19, 2024 at 5:17 PM Lukasz Luba <lukasz.luba@....com> wrote:
>>
>>
>>
>> On 12/19/24 09:11, Xuewen Yan wrote:
>>> From: Jeson Gao <jeson.gao@...soc.com>
>>>
>>> Now not only CPUs can use energy efficiency models, but GPUs
>>> can also use. On the other hand, even with only one CPU, we can also
>>> use energy_model to align control in thermal.
>>> So remove the dependence of SMP, and add the DEVFREQ.
>>
>> That's true, there are 1-CPU platforms supported. Also, GPU can have
>> the EM alone.
>>
>>>
>>> Signed-off-by: Jeson Gao <jeson.gao@...soc.com>
>>> ---
>>>    kernel/power/Kconfig | 3 +--
>>>    1 file changed, 1 insertion(+), 2 deletions(-)
>>>
>>> diff --git a/kernel/power/Kconfig b/kernel/power/Kconfig
>>> index afce8130d8b9..c532aee09e12 100644
>>> --- a/kernel/power/Kconfig
>>> +++ b/kernel/power/Kconfig
>>> @@ -361,8 +361,7 @@ config CPU_PM
>>>
>>>    config ENERGY_MODEL
>>>        bool "Energy Model for devices with DVFS (CPUs, GPUs, etc)"
>>> -     depends on SMP
>>> -     depends on CPU_FREQ
>>> +     depends on CPU_FREQ || PM_DEVFREQ
>>>        help
>>>          Several subsystems (thermal and/or the task scheduler for example)
>>>          can leverage information about the energy consumed by devices to
>>
>> Reviewed-by: Lukasz Luba <lukasz.luba@....com>

Gentle ping. You probably have missed that change for the v6.15 queue

Regards,
Lukasz