linux-kernel - Re: [PATCH v9 0/6] scripts/make_fit: Support ramdisks and faster operations

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Message-ID: <CAFLszTgQWjewjYHWUhG44em+deNY9xWDFz_YohduWvM=Bd_D5A@mail.gmail.com>
Date: Tue, 3 Feb 2026 15:45:36 +1300
From: Simon Glass <sjg@...omium.org>
To: linux-arm-kernel@...ts.infradead.org
Cc: Thomas Weißschuh <thomas.weissschuh@...utronix.de>, 
	J . Neuschäfer <j.ne@...teo.net>, 
	Masahiro Yamada <masahiroy@...nel.org>, Ahmad Fatoum <a.fatoum@...gutronix.de>, 
	Nicolas Schier <nicolas@...sle.eu>, Tom Rini <trini@...sulko.com>, 
	Chen-Yu Tsai <wenst@...omium.org>, Alice Ryhl <aliceryhl@...gle.com>, 
	Ard Biesheuvel <ardb@...nel.org>, David Sterba <dsterba@...e.com>, Josh Poimboeuf <jpoimboe@...nel.org>, 
	Kees Cook <kees@...nel.org>, Nathan Chancellor <nathan@...nel.org>, Nick Terrell <terrelln@...com>, 
	Nicolas Schier <nsc@...nel.org>, Petr Mladek <pmladek@...e.com>, linux-kbuild@...r.kernel.org, 
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH v9 0/6] scripts/make_fit: Support ramdisks and faster operations

Hi,

On Wed, 7 Jan 2026 at 05:27, Simon Glass <sjg@...omium.org> wrote:
>
> This series updates 'make image.fit' to support adding a ramdisk to the
> FIT, provided as a parameter.
>
> It also includes a few performance improvement, so that building a FIT
> from ~450MB of kernel/module/devicetree files only takes a few seconds
> on a modern machine.
>
> For this version I have dropped inclusion of built modules, as there is
> still more discussion to happen in that area.
>
> Changes in v9:
> - Rename the variable to FIT_EXTRA_ARGS
>
> Changes in v8:
> - Drop erroneous line 'kbuild: Allow adding modules into the FIT ...'
>
> Changes in v7:
> - Add a note about the " -> ' change
> - Add a new patch with the MAKE_FIT_FLAGS change
> - Mention xz as well, in the commit message
> - Drop patch 'scripts/make_fit: Provide a way to add built modules'
> - Drop patch 'kbuild: Split out module targets into a variable'
> - Drop patch 'kbuild: Allow adding modules into the FIT ramdisk'
>
> Changes in v6:
> - Drop the load address for ramdisk, as it is not needed
> - Bring back the ramdisk 'compression' property, set to 'none'
>
> Changes in v5:
> - Fix 'use' typo
>
> Changes in v4:
> - Update the commit message
>
> Changes in v3:
> - Move the ramdisk chunk into the correct patch
> - Add a comment at the top of the file about the -r option
> - Count the ramdisk in the total files
> - Update the commit message
>
> Changes in v2:
> - Don't compress the ramdisk as it is already compressed
>
> Simon Glass (6):
>   scripts/make_fit: Speed up operation
>   scripts/make_fit: Support an initial ramdisk
>   scripts/make_fit: Move dtb processing into a function
>   kbuild: Support a FIT_EXTRA_ARGS environment variable
>   scripts/make_fit: Support a few more parallel compressors
>   scripts/make_fit: Compress dtbs in parallel
>
>  scripts/Makefile.lib |   2 +-
>  scripts/make_fit.py  | 179 ++++++++++++++++++++++++++++++++++---------
>  2 files changed, 145 insertions(+), 36 deletions(-)

Can this series be applied, please?

Regards,
Simon

>
> --
> 2.43.0
>
> base-commit: 7f98ab9da046865d57c102fd3ca9669a29845f67
> branch: fita9