+ init-add-support-for-zstd-compressed-modules.patch added to -mm tree

+ init-add-support-for-zstd-compressed-modules.patch added to -mm tree

[akpm]

The patch titled
     Subject: init: add support for zstd compressed modules
has been added to the -mm tree.  Its filename is
     init-add-support-for-zstd-compressed-modules.patch

This patch should soon appear at
    https://ozlabs.org/~akpm/mmots/broken-out/init-add-support-for-zstd-compressed-modules.patch
and later at
    https://ozlabs.org/~akpm/mmotm/broken-out/init-add-support-for-zstd-compressed-modules.patch

Before you just go and hit "reply", please:
   a) Consider who else should be cc'ed
   b) Prefer to cc a suitable mailing list as well
   c) Ideally: find the original patch on the mailing list and do a
      reply-to-all to that, adding suitable additional cc's

*** Remember to use Documentation/process/submit-checklist.rst when testing your code ***

The -mm tree is included into linux-next and is updated
there every 3-4 working days

------------------------------------------------------
From: Piotr Gorski <lucjan.lucjanov@gmail.com>
Subject: init: add support for zstd compressed modules

kmod 28 supports modules compressed in zstd format so let's add this
possibility to kernel.

Requires this update to mkinitcpio:
https://github.com/archlinux/mkinitcpio/pull/43

Link: https://lkml.kernel.org/r/20210330113235.2767216-1-lucjan.lucjanov@gmail.com
Signed-off-by: Piotr Gorski <lucjan.lucjanov@gmail.com>
Reviewed-by: Oleksandr Natalenko <oleksandr@natalenko.name>
Tested-by: Oleksandr Natalenko <oleksandr@natalenko.name>
Cc: Masahiro Yamada <masahiroy@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---

 Makefile     |    7 +++++--
 init/Kconfig |    9 ++++++---
 2 files changed, 11 insertions(+), 5 deletions(-)

--- a/init/Kconfig~init-add-support-for-zstd-compressed-modules
+++ a/init/Kconfig
@@ -2222,8 +2222,8 @@ 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.
 
@@ -2245,7 +2245,7 @@ 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"
@@ -2253,6 +2253,9 @@ config MODULE_COMPRESS_GZIP
 config MODULE_COMPRESS_XZ
 	bool "XZ"
 
+config MODULE_COMPRESS_ZSTD
+	bool "ZSTD"
+
 endchoice
 
 config MODULE_ALLOW_MISSING_NAMESPACE_IMPORTS
--- a/Makefile~init-add-support-for-zstd-compressed-modules
+++ a/Makefile
@@ -1066,8 +1066,8 @@ 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
@@ -1077,6 +1077,9 @@ 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
 
_

Patches currently in -mm which might be from lucjan.lucjanov@gmail.com are

init-add-support-for-zstd-compressed-modules.patch

Re: + init-add-support-for-zstd-compressed-modules.patch added to -mm tree

[Masahiro Yamada]

On Wed, Mar 31, 2021 at 1:53 PM <akpm@linux-foundation.org> wrote:
>
>
> The patch titled
>      Subject: init: add support for zstd compressed modules
> has been added to the -mm tree.  Its filename is
>      init-add-support-for-zstd-compressed-modules.patch
>
> This patch should soon appear at
>     https://ozlabs.org/~akpm/mmots/broken-out/init-add-support-for-zstd-compressed-modules.patch
> and later at
>     https://ozlabs.org/~akpm/mmotm/broken-out/init-add-support-for-zstd-compressed-modules.patch
>
> Before you just go and hit "reply", please:
>    a) Consider who else should be cc'ed
>    b) Prefer to cc a suitable mailing list as well
>    c) Ideally: find the original patch on the mailing list and do a
>       reply-to-all to that, adding suitable additional cc's
>
> *** Remember to use Documentation/process/submit-checklist.rst when testing your code ***
>
> The -mm tree is included into linux-next and is updated
> there every 3-4 working days
>
> ------------------------------------------------------
> From: Piotr Gorski <lucjan.lucjanov@gmail.com>
> Subject: init: add support for zstd compressed modules
>
> kmod 28 supports modules compressed in zstd format so let's add this
> possibility to kernel.
>
> Requires this update to mkinitcpio:
> https://github.com/archlinux/mkinitcpio/pull/43
>
> Link: https://lkml.kernel.org/r/20210330113235.2767216-1-lucjan.lucjanov@gmail.com
> Signed-off-by: Piotr Gorski <lucjan.lucjanov@gmail.com>
> Reviewed-by: Oleksandr Natalenko <oleksandr@natalenko.name>
> Tested-by: Oleksandr Natalenko <oleksandr@natalenko.name>
> Cc: Masahiro Yamada <masahiroy@kernel.org>
> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>


I applied v3 to the kbuild tree.






> ---
>
>  Makefile     |    7 +++++--
>  init/Kconfig |    9 ++++++---
>  2 files changed, 11 insertions(+), 5 deletions(-)
>
> --- a/init/Kconfig~init-add-support-for-zstd-compressed-modules
> +++ a/init/Kconfig
> @@ -2222,8 +2222,8 @@ 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.
>
> @@ -2245,7 +2245,7 @@ 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"
> @@ -2253,6 +2253,9 @@ config MODULE_COMPRESS_GZIP
>  config MODULE_COMPRESS_XZ
>         bool "XZ"
>
> +config MODULE_COMPRESS_ZSTD
> +       bool "ZSTD"
> +
>  endchoice
>
>  config MODULE_ALLOW_MISSING_NAMESPACE_IMPORTS
> --- a/Makefile~init-add-support-for-zstd-compressed-modules
> +++ a/Makefile
> @@ -1066,8 +1066,8 @@ 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
> @@ -1077,6 +1077,9 @@ 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
>
> _
>
> Patches currently in -mm which might be from lucjan.lucjanov@gmail.com are
>
> init-add-support-for-zstd-compressed-modules.patch
>


-- 
Best Regards
Masahiro Yamada