linux-kernel - Re: [PATCH 1/6] ARM: refresh defconfig files

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Message-ID: <9e872a00-966a-aaf8-7bb9-6627fcb0cf83@linaro.org>
Date:   Thu, 21 Jul 2022 17:36:17 +0200
From:   Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
To:     Scott Branden <scott.branden@...adcom.com>,
        Arnd Bergmann <arnd@...nel.org>,
        linux-arm-kernel@...ts.infradead.org
Cc:     Arnd Bergmann <arnd@...db.de>,
        Russell King <linux@...linux.org.uk>,
        Nicolas Ferre <nicolas.ferre@...rochip.com>,
        Alexandre Belloni <alexandre.belloni@...tlin.com>,
        Claudiu Beznea <claudiu.beznea@...rochip.com>,
        Florian Fainelli <f.fainelli@...il.com>,
        Ray Jui <rjui@...adcom.com>,
        Scott Branden <sbranden@...adcom.com>,
        Alexander Shiyan <shc_work@...l.ru>,
        Alim Akhtar <alim.akhtar@...sung.com>,
        Shawn Guo <shawnguo@...nel.org>,
        Sascha Hauer <s.hauer@...gutronix.de>,
        Pengutronix Kernel Team <kernel@...gutronix.de>,
        Fabio Estevam <festevam@...il.com>,
        NXP Linux Team <linux-imx@....com>,
        Vladimir Zapolskiy <vz@...ia.com>,
        Taichi Sugaya <sugaya.taichi@...ionext.com>,
        Takao Orito <orito.takao@...ionext.com>,
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Subject: Re: [PATCH 1/6] ARM: refresh defconfig files

On 21/07/2022 17:33, Scott Branden wrote:
> Hi Arnd,
> 
> On 2022-07-21 07:13, Arnd Bergmann wrote:
>> From: Arnd Bergmann <arnd@...db.de>
>>
>> A lot of Kconfig options have changed over the years, and we tend
>> to not do a blind 'make defconfig' to refresh the files, to ensure
>> we catch options that should not have gone away.
>>
>> I used some a bit of scripting to only rework the bits where an
>> option moved around in any of the defconfig files, without also
>> dropping any of the other lines, to make it clearer which options
>> we no longer have.
> Resync is fine.  But, it would be great if the defconfig files were kept 
> in sync. Almost every kernel version kconfig options change which affect 
> these files. Could we put in place a defconfig refresh per kernel 
> version to keep them all in sync going forward?
>

Not entirely, because some Kconfig changes are causing symbols to
disappear. Also defconfig is expected to include user-visible options,
even if savedefconfig would drop them.

This is why blind savedefconfig is not acceptable.

Best regards,
Krzysztof