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kbuild: remove CONFIG_MODULE_COMPRESS

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CONFIG_MODULE_COMPRESS is only used to activate the choice for module
compression algorithm. It will be simpler to make the choice always
visible, and add CONFIG_MODULE_COMPRESS_NONE in the choice.

This is more consistent with the "Kernel compression mode" and "Built-in
initramfs compression mode" choices. CONFIG_KERNEL_UNCOMPRESSED and
CONFIG_INITRAMFS_COMPRESSION_NONE are available to choose no compression.

Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
Reviewed-by: Nick Desaulniers <ndesaulniers@google.com>
This commit is contained in:
Masahiro Yamada 2021-03-31 22:38:10 +09:00
parent 961ab4a3cd
commit d4bbe94209
1 changed files with 32 additions and 25 deletions
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57
init/Kconfig
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@ -2225,40 +2225,47 @@ config MODULE_SIG_HASH
default "sha384" if MODULE_SIG_SHA384
default "sha512" if MODULE_SIG_SHA512
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.
module-init-tools MAY support gzip, and kmod MAY support gzip and xz.
Out-of-tree kernel modules installed using Kbuild will also be
compressed upon installation.
Note: for modules inside an initrd or initramfs, it's more efficient
to compress the whole initrd or initramfs instead.
Note: This is fully compatible with signed modules.
If in doubt, say N.
choice
prompt "Compression algorithm"
depends on MODULE_COMPRESS
default MODULE_COMPRESS_GZIP
prompt "Module compression mode"
help
This determines which sort of compression will be used during
'make modules_install'.
This option allows you to choose the algorithm which will be used to
compress modules when 'make modules_install' is run. (or, you can
choose to not compress modules at all.)
GZIP (default) and XZ are supported.
External modules will also be compressed in the same way during the
installation.
For modules inside an initrd or initramfs, it's more efficient to
compress the whole initrd or initramfs instead.
This is fully compatible with signed modules.
Please note that the tool used to load modules needs to support the
corresponding algorithm. module-init-tools MAY support gzip, and kmod
MAY support gzip and xz.
Your build system needs to provide the appropriate compression tool
to compress the modules.
If in doubt, select 'None'.
config MODULE_COMPRESS_NONE
bool "None"
help
Do not compress modules. The installed modules are suffixed
with .ko.
config MODULE_COMPRESS_GZIP
bool "GZIP"
help
Compress modules with GZIP. The installed modules are suffixed
with .ko.gz.
config MODULE_COMPRESS_XZ
bool "XZ"
help
Compress modules with XZ. The installed modules are suffixed
with .ko.xz.
endchoice