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Date:   Tue, 5 Jul 2022 08:30:26 +0100
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Subject: Re: [PATCH v3 05/12] thermal/core: Remove unneeded EXPORT_SYMBOLS
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To:     daniel.lezcano@linaro.org
Cc:     linux-pm@vger.kernel.org, linux-kernel@vger.kernel.org,
        khilman@baylibre.com, abailon@baylibre.com,
        Amit Kucheria <amitk@kernel.org>,
        Zhang Rui <rui.zhang@intel.com>, Todd Kjos <tkjos@google.com>,
        Wei Wang <wvw@google.com>, rafael@kernel.org,
        Daniel Lezcano <daniel.lezcano@linexp.org>
References: <20220703183059.4133659-1-daniel.lezcano@linexp.org>
 <20220703183059.4133659-6-daniel.lezcano@linexp.org>
 <ad8dd950-9260-16b3-2134-72984e2ba261@arm.com>
 <e2d81210-a969-fe9d-a4fb-1826c991fbce@linexp.org>
From:   Lukasz Luba <lukasz.luba@arm.com>
In-Reply-To: <e2d81210-a969-fe9d-a4fb-1826c991fbce@linexp.org>
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On 7/4/22 22:14, Daniel Lezcano wrote:
> On 04/07/2022 09:35, Lukasz Luba wrote:
>> Hi Daniel,
>>
>> (+Todd and Wei on CC)
>>
>>
>> On 7/3/22 19:30, Daniel Lezcano wrote:
> 
> [ ... ]
> 
>>>   }
>>> -EXPORT_SYMBOL(get_tz_trend);
> 
> [ ... ]
> 
>>>   }
>>> -EXPORT_SYMBOL(thermal_cdev_update);
>>
>> I wouldn't remove that export. I can see in my Pixel6 modules dir, that
>> it's called in 7 places.
>>
>> I assume that in Android world this is common use.
> 
> It is not possible to do changes taking into consideration out of tree 
> code. Moreover there is logically no good reason to use the 
> thermal_cdev_update() function from outside of the thermal core code.
> 

I see your point which is 'upstream'. On the other hand the mostly
deployed kernel is in Android devices and that brings a lot to the
community.

This symbol might also be used by other distros which might have
modules for some accelerators, which also support tricky cooling.

I would keep it as is...