Re: [PATCH 9/9] kbuild: remove CONFIG_MODULE_COMPRESS
On Wed, Mar 31, 2021 at 10:39 PM Masahiro Yamada wrote: > > 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 > --- > > 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 This should be "Compress modules with GZIP." I will fix it when applied. > + 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 > -- Best Regards Masahiro Yamada
Re: [PATCH 9/9] kbuild: remove CONFIG_MODULE_COMPRESS
On Wed, Mar 31, 2021 at 6:39 AM Masahiro Yamada wrote: Should the online be Kconfig rather than Kbuild, for a commit that only changes Kconfigs? > > 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 > --- > > 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 The top level Makefile has comments and code that refer to this choice which is now removed. I think you'll want to fix that up in this change as well? Ah, patch 7 in the series does that: https://lore.kernel.org/linux-kbuild/20210331133811.3221540-7-masahi...@kernel.org/ Ok then this LGTM. Reviewed-by: Nick Desaulniers > - 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 > -- Thanks, ~Nick Desaulniers
[PATCH 9/9] kbuild: remove CONFIG_MODULE_COMPRESS
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 --- 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
