linux-kernel - [PATCH 0/3] ARM ZSTD boot compression

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Message-Id: <20230412212126.3966502-1-j.neuschaefer@gmx.net>
Date:   Wed, 12 Apr 2023 23:21:23 +0200
From:   Jonathan Neuschäfer <j.neuschaefer@....net>
To:     linux-arm-kernel@...ts.infradead.org
Cc:     Russell King <linux@...linux.org.uk>,
        Nick Terrell <terrelln@...com>, Arnd Bergmann <arnd@...db.de>,
        Tony Lindgren <tony@...mide.com>,
        Geert Uytterhoeven <geert+renesas@...der.be>,
        Linus Walleij <linus.walleij@...aro.org>,
        Sebastian Reichel <sebastian.reichel@...labora.com>,
        Nick Hawkins <nick.hawkins@....com>,
        Christophe Leroy <christophe.leroy@...roup.eu>,
        Jonathan Neuschäfer <j.neuschaefer@....net>,
        Florian Fainelli <f.fainelli@...il.com>,
        Nick Desaulniers <ndesaulniers@...gle.com>,
        Xin Li <xin3.li@...el.com>,
        Seung-Woo Kim <sw0312.kim@...sung.com>,
        Paul Bolle <pebolle@...cali.nl>,
        Bart Van Assche <bvanassche@....org>,
        linux-kernel@...r.kernel.org
Subject: [PATCH 0/3] ARM ZSTD boot compression

This patchset enables ZSTD kernel (de)compression on 32-bit ARM.
Unfortunately, it is much slower than I hoped (tested on ARM926EJ-S):

 - LZO:  7.2 MiB,  6 seconds
 - ZSTD: 5.6 MiB, 60 seconds

Jonathan Neuschäfer (3):
  ARM: compressed: Pass the actual output length to the decompressor
  ARM: compressed: Bump MALLOC_SIZE to 128 KiB
  ARM: compressed: Enable ZSTD compression

 arch/arm/Kconfig                      |  1 +
 arch/arm/boot/compressed/Makefile     |  5 +++--
 arch/arm/boot/compressed/decompress.c |  8 ++++++--
 arch/arm/boot/compressed/head.S       |  4 ++--
 arch/arm/boot/compressed/misc.c       | 12 ++++++++++--
 5 files changed, 22 insertions(+), 8 deletions(-)

--
2.39.2