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eclass/dist-kernel-utils: Sync with Gentoo

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It's from Gentoo commit 5d417624a82991d4786b59dff1213e10ee641a12.

Signed-off-by: Flatcar Buildbot <buildbot@flatcar-linux.org>
This commit is contained in:
Flatcar Buildbot 2026-03-02 07:25:44 +00:00 committed by Krzesimir Nowak
parent 954d823d4d
commit 9bc18b25d1
1 changed files with 38 additions and 1 deletions
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39
sdk_container/src/third_party/portage-stable/eclass/dist-kernel-utils.eclass vendored
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@ -1,4 +1,4 @@
# Copyright 2020-2025 Gentoo Authors
# Copyright 2020-2026 Gentoo Authors
# Distributed under the terms of the GNU General Public License v2
# @ECLASS: dist-kernel-utils.eclass
@ -215,6 +215,43 @@ dist-kernel_PV_to_KV() {
echo "${kv}"
}
# @FUNCTION: dist-kernel_get_compressor
# @USAGE: <kernel_config>
# @DESCRIPTION:
# Returns the compressor with arguments for compressing kernel modules
# based on the CONFIG_MODULES_COMPESS_* setting in the kernel config.
dist-kernel_get_compressor() {
debug-print-function ${FUNCNAME} "$@"
[[ ${#} -eq 1 ]] || die "${FUNCNAME}: invalid arguments"
local suffix=$(dist-kernel_get_module_suffix "${1}")
local compress=()
# Options taken from linux-mod-r1.eclass.
# We don't instruct the compressor to parallelize because it applies
# multithreading per file, so it works only for big files, and we have
# lots of small files instead.
case ${suffix} in
.ko)
return
;;
.ko.gz)
compress+=( gzip )
;;
.ko.xz)
compress+=( xz --check=crc32 --lzma2=dict=1MiB )
;;
.ko.zst)
compress+=( zstd -q --rm )
;;
*)
die "Unknown compressor: ${suffix}"
;;
esac
echo "${compress[@]}"
}
# @FUNCTION: dist-kernel_get_module_suffix
# @USAGE: <kernel_config>
# @DESCRIPTION: