linux-kernel - Re: linux-next: Tree for Nov 15 (thermal: THERMAL_GOV_POWER

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Date:   Wed, 4 Dec 2019 21:47:42 -0800
From:   Randy Dunlap <rdunlap@...radead.org>
To:     Zhang Rui <rui.zhang@...el.com>,
        Stephen Rothwell <sfr@...b.auug.org.au>,
        Linux Next Mailing List <linux-next@...r.kernel.org>
Cc:     Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        Linux PM list <linux-pm@...r.kernel.org>,
        Eduardo Valentin <edubezval@...il.com>,
        Daniel Lezcano <daniel.lezcano@...aro.org>,
        Amit Kucheria <amit.kucheria@...durent.com>, qperret@...gle.com
Subject: Re: linux-next: Tree for Nov 15 (thermal:
 THERMAL_GOV_POWER_ALLOCATOR)

On 12/4/19 8:27 PM, Zhang Rui wrote:
> On Wed, 2019-12-04 at 08:25 -0800, Randy Dunlap wrote:
>> On 11/15/19 3:44 PM, Randy Dunlap wrote:
>>> On 11/15/19 12:05 AM, Stephen Rothwell wrote:
>>>> Hi all,
>>>>
>>>> Changes since 20191114:
>>>>
>>>
>>> on i386:
>>>
>>> WARNING: unmet direct dependencies detected for
>>> THERMAL_GOV_POWER_ALLOCATOR
>>>   Depends on [n]: THERMAL [=y] && ENERGY_MODEL [=n]
>>>   Selected by [y]:
>>>   - THERMAL_DEFAULT_GOV_POWER_ALLOCATOR [=y] && <choice>
>>>
>>>
>>> THERMAL_GOV_POWER_ALLOCATOR is selected by
>>> THERMAL_DEFAULT_GOV_POWER_ALLOCATOR
>>> even though ENERGY_MODEL is not set/enabled.
>>>
>>>
>>
>> This Kconfig warning is still happening in linux-next of 20191204.
>>
> I overlooked the original report probably because I was not CCed.
> 
> This is introduced by commit a4e893e802e6("thermal: cpu_cooling:
> Migrate to using the EM framework") which adds the dependency of
> ENERGY_MODEL for THERMAL_GOV_POWER_ALLOCATOR.
> 
> To fix this, it's better to make THERMAL_DEFAULT_GOV_POWER_ALLOCATOR
> depends on THERMAL_GOV_POWER_ALLOCATOR instead.
> 
> Please confirm the problem is fixed by below patch.
> 
> thanks,
> rui
> 
> From c9429f6e28ea2219686a4294d39f015ba373774b Mon Sep 17 00:00:00 2001
> From: Zhang Rui <rui.zhang@...el.com>
> Date: Thu, 5 Dec 2019 12:17:07 +0800
> Subject: [PATCH] thermal: fix a Kconfig warning
> 
> Currently, THERMAL_GOV_POWER_ALLOCATOR is selected by
> THERMAL_DEFAULT_GOV_POWER_ALLOCATOR even if it has some unmet
> dependencies.
> 
> This causes the Kconfig warning
>    WARNING: unmet direct dependencies detected for
>       THERMAL_GOV_POWER_ALLOCATOR
>       Depends on [n]: THERMAL [=y] && ENERGY_MODEL [=n]
>       Selected by [y]:
>       - THERMAL_DEFAULT_GOV_POWER_ALLOCATOR [=y] && <choice>
> 
> Fix the problem by making THERMAL_DEFAULT_GOV_POWER_ALLOCATOR depends on
> THERMAL_GOV_POWER_ALLOCATOR instead.
> 
> Fixes: a4e893e802e6("thermal: cpu_cooling: Migrate to using the EM framework")
> Signed-off-by: Zhang Rui <rui.zhang@...el.com>

Acked-by: Randy Dunlap <rdunlap@...radead.org> # build-tested

Thanks.

> ---
>  drivers/thermal/Kconfig | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/drivers/thermal/Kconfig b/drivers/thermal/Kconfig
> index 59b79fc48266..79b27865c6f4 100644
> --- a/drivers/thermal/Kconfig
> +++ b/drivers/thermal/Kconfig
> @@ -108,7 +108,7 @@ config THERMAL_DEFAULT_GOV_USER_SPACE
>  
>  config THERMAL_DEFAULT_GOV_POWER_ALLOCATOR
>  	bool "power_allocator"
> -	select THERMAL_GOV_POWER_ALLOCATOR
> +	depends on THERMAL_GOV_POWER_ALLOCATOR
>  	help
>  	  Select this if you want to control temperature based on
>  	  system and device power allocation. This governor can only
> 


-- 
~Randy