On Tue, Mar 30, 2021 at 01:32:35PM +0200, Piotr Gorski wrote: > kmod 28 supports modules compressed in zstd format so let's add this possibility to kernel. > > Signed-off-by: Piotr Gorski <lucjan.lucjanov@xxxxxxxxx> > --- > Makefile | 7 +++++-- > init/Kconfig | 9 ++++++--- > 2 files changed, 11 insertions(+), 5 deletions(-) > > diff --git a/Makefile b/Makefile > index 5160ff8903c1..82f4f4cc2955 100644 > --- a/Makefile > +++ b/Makefile > @@ -1156,8 +1156,8 @@ endif # INSTALL_MOD_STRIP > export mod_strip_cmd > > # CONFIG_MODULE_COMPRESS, if defined, will cause module to be compressed > -# after they are installed in agreement with CONFIG_MODULE_COMPRESS_GZIP > -# or CONFIG_MODULE_COMPRESS_XZ. > +# after they are installed in agreement with CONFIG_MODULE_COMPRESS_GZIP, > +# CONFIG_MODULE_COMPRESS_XZ, or CONFIG_MODULE_COMPRESS_ZSTD. > > mod_compress_cmd = true > ifdef CONFIG_MODULE_COMPRESS > @@ -1167,6 +1167,9 @@ ifdef CONFIG_MODULE_COMPRESS > ifdef CONFIG_MODULE_COMPRESS_XZ > mod_compress_cmd = $(XZ) --lzma2=dict=2MiB -f > endif # CONFIG_MODULE_COMPRESS_XZ > + ifdef CONFIG_MODULE_COMPRESS_ZSTD > + mod_compress_cmd = $(ZSTD) -T0 --rm -f -q > + endif # CONFIG_MODULE_COMPRESS_ZSTD > endif # CONFIG_MODULE_COMPRESS > export mod_compress_cmd > > diff --git a/init/Kconfig b/init/Kconfig > index 8c2cfd88f6ef..86a452bc2747 100644 > --- a/init/Kconfig > +++ b/init/Kconfig > @@ -2250,8 +2250,8 @@ config MODULE_COMPRESS > bool "Compress modules on installation" > help > > - Compresses kernel modules when 'make modules_install' is run; gzip or > - xz depending on "Compression algorithm" below. > + Compresses kernel modules when 'make modules_install' is run; gzip, > + xz, or zstd depending on "Compression algorithm" below. > > module-init-tools MAY support gzip, and kmod MAY support gzip and xz. > > @@ -2273,7 +2273,7 @@ choice > This determines which sort of compression will be used during > 'make modules_install'. > > - GZIP (default) and XZ are supported. > + GZIP (default), XZ, and ZSTD are supported. > > config MODULE_COMPRESS_GZIP > bool "GZIP" > @@ -2281,6 +2281,9 @@ config MODULE_COMPRESS_GZIP > config MODULE_COMPRESS_XZ > bool "XZ" > > +config MODULE_COMPRESS_ZSTD > + bool "ZSTD" > + > endchoice > > config MODULE_ALLOW_MISSING_NAMESPACE_IMPORTS > -- > 2.31.0.97.g1424303384 > Great! Reviewed-by: Oleksandr Natalenko <oleksandr@xxxxxxxxxxxxxx> This works perfectly fine in Arch Linux if accompanied by the following mkinitcpio amendment: [1]. I'm also Cc'ing other people from get_maintainers output just to make this submission more visible. Thanks. [1] https://github.com/archlinux/mkinitcpio/pull/43 -- Oleksandr Natalenko (post-factum)
