linux-kernel - Re: [PATCH] ARM: imx_v6_v7_defconfig: Remove KERNEL

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Message-ID: <20230527124428.GT528183@dragon>
Date:   Sat, 27 May 2023 20:44:28 +0800
From:   Shawn Guo <shawnguo@...nel.org>
To:     Arnd Bergmann <arnd@...db.de>
Cc:     Otavio Salvador <otavio@...ystems.com.br>,
        linux-arm-kernel@...ts.infradead.org,
        Alistair Francis <alistair@...stair23.me>,
        Fabio Estevam <festevam@...il.com>,
        "Kirill A. Shutemov" <kirill.shutemov@...ux.intel.com>,
        Marcel Ziswiler <marcel.ziswiler@...adex.com>,
        Mark Brown <broonie@...nel.org>,
        Michael Ellerman <mpe@...erman.id.au>,
        NXP Linux Team <linux-imx@....com>,
        Pengutronix Kernel Team <kernel@...gutronix.de>,
        Russell King <linux@...linux.org.uk>,
        Sascha Hauer <s.hauer@...gutronix.de>,
        Stefan Hansson <newbie13xd@...il.com>,
        Stefan Wahren <stefan.wahren@...rgebyte.com>,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH] ARM: imx_v6_v7_defconfig: Remove KERNEL_LZO config

On Wed, May 24, 2023 at 08:48:26AM +0200, Arnd Bergmann wrote:
> On Tue, May 23, 2023, at 23:28, Otavio Salvador wrote:
> > The KERNEL_GZIP is used in most config and is the default, there is no
> > clear reason to diverge so let default be used.
> >
> > Signed-off-by: Otavio Salvador <otavio@...ystems.com.br>
> 
> I don't mind that change, but it seems odd to single this one out, as
> there are many other options in that particular defconfig that
> stick out more, picking LZO seems like a reasonable choice for slightly
> faster booting, though ZSTD would be the more modern choice.
> 
> If you are looking into cleaning up this file, maybe see if we can
> kill off these options:
> 
> CONFIG_EXPERT=y
> CONFIG_ARCH_FORCE_MAX_ORDER=13
> CONFIG_CMDLINE="noinitrd console=ttymxc0,115200"
> CONFIG_CS89x0_PLATFORM=y # none of these four are in dts files
> CONFIG_SMC91X=y
> CONFIG_SMC911X=y
> CONFIG_SMSC911X=y
> CONFIG_STAGING=y
> CONFIG_STAGING_MEDIA=y
> CONFIG_VIDEO_IMX_MEDIA=y # not graduated from staging after 6 years
> CONFIG_EXT2_FS=y
> CONFIG_EXT3_FS=y # select EXT4 instead
> CONFIG_ISO9660_FS=m
> 
> I have not investigated why any of them were added originally,
> so it's likely that some are actually needed.

Otavio,

Would you investigate the suggested options and see if we can clean up
more than just KERNEL_LZO?

Shawn