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| author | Maxim Cournoyer <maxim.cournoyer@gmail.com> | 2024-05-12 20:51:50 -0400 |
|---|---|---|
| committer | Maxim Cournoyer <maxim.cournoyer@gmail.com> | 2024-05-29 22:01:23 -0400 |
| commit | afacfa33ec4b52cb9ffb9b0a7a0c1e68cf264673 (patch) | |
| tree | 9d811f1d85d4ae892604ca421d653ea53fb654a0 /gnu/packages/linux.scm | |
| parent | b72b6063cebbcfd64d43f5b05ba8470eb11c3f65 (diff) | |
| download | guix-afacfa33ec4b52cb9ffb9b0a7a0c1e68cf264673.tar.gz guix-afacfa33ec4b52cb9ffb9b0a7a0c1e68cf264673.zip | |
gnu: linux-libre: Enable Zstd compression of kernel modules.
This brings the on disk size of the kernel from 164 MiB to 144 MiB, or about
12%.
* gnu/packages/linux.scm (default-extra-linux-options)
[version>=5.13]: Enable CONFIG_MODULE_COMPRESS_ZSTD, else
CONFIG_MODULE_COMPRESS_GZIP.
(make-linux-libre*) [phases] {set-environment}: Set ZSTD_CLEVEL environment
variable to 19.
[native-inputs]: Add zstd.
* gnu/build/linux-modules.scm (module-regex): Add .zst to regexp. Update doc.
(modinfo-section-contents): Extend support to Zstd compressed module.
(dot-ko): Register the 'zstd compression type.
(ensure-dot-ko, file-name->module-name, load-linux-module*)
(module-name->file-name/guess, write-module-name-database)
(write-module-alias-database, write-module-device-database): Update doc.
(module-name-lookup): Also consider zstd-compressed modules.
* gnu/installer.scm (installer-program): Add guile-zstd extension to gexp.
* gnu/system/linux-initrd.scm (flat-linux-module-directory): Likewise.
Decompress zstd-compressed modules for use in initrd.
* guix/profiles.scm (linux-module-database): Add guile-zstd extension to gexp.
Change-Id: Ide899dc5c58ea5033583b1a91a92c025fc8d901a
Diffstat (limited to 'gnu/packages/linux.scm')
| -rw-r--r-- | gnu/packages/linux.scm | 13 |
1 files changed, 11 insertions, 2 deletions
diff --git a/gnu/packages/linux.scm b/gnu/packages/linux.scm index db2b0f4bda..2575f687da 100644 --- a/gnu/packages/linux.scm +++ b/gnu/packages/linux.scm @@ -874,6 +874,10 @@ ARCH and optionally VARIANT, or #f if there is no such configuration." ,@(if (version>=? version "5.13") '(("BPF_UNPRIV_DEFAULT_OFF" . #t)) '()) + ;; Compress kernel modules via Zstd. + ,(if (version>=? version "5.13") + '("CONFIG_MODULE_COMPRESS_ZSTD" . #t) + '("CONFIG_MODULE_COMPRESS_GZIP" . #t)) ;; Some very mild hardening. ("CONFIG_SECURITY_DMESG_RESTRICT" . #t) ;; All kernels should have NAMESPACES options enabled @@ -1063,7 +1067,10 @@ ARCH and optionally VARIANT, or #f if there is no such configuration." "EXTRAVERSION ?=")) (setenv "EXTRAVERSION" #$(and extra-version - (string-append "-" extra-version))))) + (string-append "-" extra-version))) + ;; Use the maximum compression available for Zstd-compressed + ;; modules. + (setenv "ZSTD_CLEVEL" "19"))) (replace 'configure (lambda _ (let ((config @@ -1157,7 +1164,9 @@ ARCH and optionally VARIANT, or #f if there is no such configuration." ;; support. dwarves ;for pahole python-wrapper - zlib)) + zlib + ;; For Zstd compression of kernel modules. + zstd)) (home-page "https://www.gnu.org/software/linux-libre/") (synopsis "100% free redistribution of a cleaned Linux kernel") (description "GNU Linux-Libre is a free (as in freedom) variant of the |