linux-kernel - Re: [PATCH 4/8] thermal/drivers/Kconfig: Convert the CPU cooling device to a choice

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Date:   Wed, 7 Feb 2018 11:15:52 +0100
From:   Daniel Lezcano <daniel.lezcano@...aro.org>
To:     Viresh Kumar <viresh.kumar@...aro.org>
Cc:     edubezval@...il.com, kevin.wangtao@...aro.org, leo.yan@...aro.org,
        vincent.guittot@...aro.org, amit.kachhap@...il.com,
        linux-kernel@...r.kernel.org, Zhang Rui <rui.zhang@...el.com>,
        "open list:THERMAL" <linux-pm@...r.kernel.org>
Subject: Re: [PATCH 4/8] thermal/drivers/Kconfig: Convert the CPU cooling
 device to a choice

On 07/02/2018 10:04, Viresh Kumar wrote:
> On 23-01-18, 16:34, Daniel Lezcano wrote:
>> The next changes will add new way to cool down a CPU. In order to
>> sanitize and make the overall cpu cooling code consistent and robust
>> we must prevent the cpu cooling devices to co-exists with the same
>> purpose at the same time in the kernel.
>>
>> Make the CPU cooling device a choice in the Kconfig, so only one CPU
>> cooling strategy can be chosen.
>>
>> Signed-off-by: Daniel Lezcano <daniel.lezcano@...aro.org>
>> ---
>>  drivers/thermal/Kconfig | 20 +++++++++++++++++---
>>  1 file changed, 17 insertions(+), 3 deletions(-)
>>
>> diff --git a/drivers/thermal/Kconfig b/drivers/thermal/Kconfig
>> index 315ae29..925e73b 100644
>> --- a/drivers/thermal/Kconfig
>> +++ b/drivers/thermal/Kconfig
>> @@ -142,17 +142,31 @@ config THERMAL_GOV_POWER_ALLOCATOR
>>  	  allocating and limiting power to devices.
>>  
>>  config CPU_THERMAL
>> -	bool "generic cpu cooling support"
>> -	depends on CPU_FREQ
>> +	bool "Generic cpu cooling support"
>>  	depends on THERMAL_OF
>>  	help
>> +	  Enable the CPU cooling features. If the system has no active
>> +	  cooling device available, this option allows to use the CPU
>> +	  as a cooling device.
>> +
>> +choice
>> +	prompt "CPU cooling strategies"
>> +	depends on CPU_THERMAL
>> +	default CPU_FREQ_THERMAL
>> +	help
>> +	  Select the CPU cooling strategy.
>> +
>> +config CPU_FREQ_THERMAL
> 
> Perhaps you should start using this macro in code in this patch
> itself.

Do you mean s/CPU_THERMAL/CPU_FREQ_THERMAL/ in include/linux/cpu_cooling.h ?


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