linux-kernel - Re: [PATCH 1/2] drivers/clocksource/timer-of: Remove _

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Date:   Mon, 27 Apr 2020 22:09:08 +0200
From:   Daniel Lezcano <daniel.lezcano@...aro.org>
To:     Saravana Kannan <saravanak@...gle.com>
Cc:     Baolin Wang <baolin.wang7@...il.com>,
        Thomas Gleixner <tglx@...utronix.de>,
        Orson Zhai <orsonzhai@...il.com>,
        Chunyan Zhang <zhang.lyra@...il.com>,
        LKML <linux-kernel@...r.kernel.org>,
        Android Kernel Team <kernel-team@...roid.com>
Subject: Re: [PATCH 1/2] drivers/clocksource/timer-of: Remove __init markings

On 27/04/2020 21:04, Saravana Kannan wrote:
> On Mon, Apr 27, 2020 at 10:13 AM Daniel Lezcano
> <daniel.lezcano@...aro.org> wrote:
>>
>> On 13/04/2020 04:55, Baolin Wang wrote:
>>> Hi Daniel,
>>>
>>> On Tue, Mar 24, 2020 at 1:59 PM Baolin Wang <baolin.wang7@...il.com> wrote:
>>>>
>>>> From: Saravana Kannan <saravanak@...gle.com>
>>>>
>>>> This allows timer drivers to be compiled as modules.
>>>>
>>>> Signed-off-by: Saravana Kannan <saravanak@...gle.com>
>>>> Signed-off-by: Baolin Wang <baolin.wang7@...il.com>
>>>
>>> Do you have any comments for this patch set? Thanks.
>>
>> If my understanding is correct, this patch is part of the GKI picture
>> where hardware drivers are converted to modules.
>>
>> But do we really want to convert timer drivers to modules ?
>>
>> Is the core time framework able to support that (eg. load + unload )
> 
> So this will mainly be used for secondary timers that the system
> supports. Not for the main one that's set up during early boot for
> sched timer to work. For the primary timer during boot up, we still
> expect that to be the default ARM timer and don't want/expect that to
> be a module (it can't be).

My question is about clockevents_config_and_register() for instance, is
there a function to unregister in the core framework ?


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