From: Masahiro Yamada <masahiroy@kernel.org>
To: linux-kbuild@vger.kernel.org
Cc: linux-kernel@vger.kernel.org,
Masahiro Yamada <masahiroy@kernel.org>,
Andrew Morton <akpm@linux-foundation.org>,
Chris Wilson <chris@chris-wilson.co.uk>,
David Howells <dhowells@redhat.com>,
Johannes Weiner <hannes@cmpxchg.org>,
Kees Cook <keescook@chromium.org>,
Nathan Chancellor <nathan@kernel.org>,
Nick Desaulniers <ndesaulniers@google.com>,
Nick Terrell <terrelln@fb.com>,
Valentin Schneider <valentin.schneider@arm.com>,
Vlastimil Babka <vbabka@suse.cz>
Subject: [PATCH 9/9] kbuild: remove CONFIG_MODULE_COMPRESS
Date: Wed, 31 Mar 2021 22:38:10 +0900 [thread overview]
Message-ID: <20210331133811.3221540-9-masahiroy@kernel.org> (raw)
In-Reply-To: <20210331133811.3221540-1-masahiroy@kernel.org>
CONFIG_MODULE_COMPRESS is only used to activate the choice for module
compression algorithm. It will be simpler to make the choice visible
all the time by adding CONFIG_MODULE_COMPRESS_NONE to allow the user to
disable module compression.
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 to not compress the kernel, initrd, respectively.
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
---
init/Kconfig | 45 ++++++++++++++++++++++++++-------------------
1 file changed, 26 insertions(+), 19 deletions(-)
diff --git a/init/Kconfig b/init/Kconfig
index 019c1874e609..3ca1ffd219c4 100644
--- a/init/Kconfig
+++ b/init/Kconfig
@@ -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"
+choice
+ prompt "Module compression mode"
help
+ 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.)
- Compresses kernel modules when 'make modules_install' is run; gzip or
- xz depending on "Compression algorithm" below.
+ External modules will also be compressed in the same way during the
+ installation.
- module-init-tools MAY support gzip, and kmod MAY support gzip and xz.
+ For modules inside an initrd or initramfs, it's more efficient to
+ compress the whole initrd or initramfs instead.
- Out-of-tree kernel modules installed using Kbuild will also be
- compressed upon installation.
+ This is fully compatible with signed modules.
- Note: for modules inside an initrd or initramfs, it's more efficient
- to compress the whole initrd or initramfs instead.
+ 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.
- Note: This is fully compatible with signed modules.
+ Your build system needs to provide the appropriate compression tool
+ to compress the modules.
- If in doubt, say N.
+ If in doubt, select 'None'.
-choice
- prompt "Compression algorithm"
- depends on MODULE_COMPRESS
- default MODULE_COMPRESS_GZIP
+config MODULE_COMPRESS_NONE
+ bool "None"
help
- This determines which sort of compression will be used during
- 'make modules_install'.
-
- GZIP (default) and XZ are supported.
+ Do not compress modules. The installed modules are suffixed
+ with .ko.
config MODULE_COMPRESS_GZIP
bool "GZIP"
+ help
+ Compress modules with XZ. 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
--
2.27.0
next prev parent reply other threads:[~2021-03-31 13:40 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-03-31 13:38 [PATCH 1/9] kbuild: remove unneeded mkdir for external modules_install Masahiro Yamada
2021-03-31 13:38 ` [PATCH 2/9] kbuild: unify modules(_install) for in-tree and external modules Masahiro Yamada
2021-03-31 13:38 ` [PATCH 3/9] kbuild: show the target directory for depmod log Masahiro Yamada
2021-03-31 13:38 ` [PATCH 4/9] kbuild: check module name conflict for external modules as well Masahiro Yamada
2021-03-31 13:38 ` [PATCH 5/9] kbuild: rename extmod-prefix to extmod_prefix Masahiro Yamada
2021-03-31 17:54 ` Nick Desaulniers
2021-03-31 13:38 ` [PATCH 6/9] kbuild: refactor scripts/Makefile.modinst Masahiro Yamada
2021-05-12 14:23 ` Johannes Berg
2021-03-31 13:38 ` [PATCH 7/9] kbuild: move module strip/compression code into scripts/Makefile.modinst Masahiro Yamada
2021-03-31 13:38 ` [PATCH 8/9] kbuild: merge scripts/Makefile.modsign to scripts/Makefile.modinst Masahiro Yamada
2021-03-31 13:38 ` Masahiro Yamada [this message]
2021-03-31 18:01 ` [PATCH 9/9] kbuild: remove CONFIG_MODULE_COMPRESS Nick Desaulniers
2021-04-07 14:29 ` Masahiro Yamada
2021-04-07 14:30 ` [PATCH 1/9] kbuild: remove unneeded mkdir for external modules_install Masahiro Yamada
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