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# Copyright 1999-2022 Gentoo Authors
# Distributed under the terms of the GNU General Public License v2
EAPI="8"
inherit linux-info systemd
DESCRIPTION="Modify realtime scheduling policy and priority of IRQ handlers"
HOMEPAGE="https://www.rncbc.org/archive/#rtirq"
SRC_URI="https://www.rncbc.org/archive/${P}.tar.gz
https://www.rncbc.org/archive/old/${P}.tar.gz"
LICENSE="GPL-2+"
SLOT="0"
KEYWORDS="~amd64 ~x86"
src_prepare() {
# We install into bin
sed -i -e "s:/usr/sbin/rtirq:/usr/bin/rtirq:" ${PN}{,-resume}.service || die
default
}
src_install() {
newbin rtirq.sh rtirq
newinitd "${FILESDIR}"/rtirq.initd rtirq
insinto /etc/
doins rtirq.conf
systemd_dounit rtirq{,-resume}.service
}
pkg_postinst() {
local kconfig_warn=1
local cmdline
local ver
if linux-info_get_any_version && linux_config_exists; then
if linux_chkconfig_present PREEMPT_RT; then
kconfig_warn=0
elif linux_chkconfig_present IRQ_FORCED_THREADING; then
cmdline=$(< /proc/cmdline) || die
[[ ${cmdline} == *threadirqs* ]] && kconfig_warn=0
fi
fi
if (( ${kconfig_warn} )); then
ewarn "To use rtirq, you need one of the following kernel configurations:"
ewarn " - PREEMPT_RT config option enabled (e.g. with sys-kernel/rt-sources);"
ewarn " - IRQ_FORCED_THREADING config option enabled and 'threadirqs' option"
ewarn " added to the kernel cmdline."
fi
for ver in ${REPLACING_VERSIONS}; do
if ver_test ${ver} -lt "20210329"; then
elog "Starting with 20210329 version the config has been moved to '${EROOT}/etc/rtirq.conf'"
elog "Please migrate all you setting from '${EROOT}/etc/conf.d/rtirq'"
break
fi
done
}
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