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{ lib, buildLinux, fetchurl
, kernelPatches ? [ ]
, structuredExtraConfig ? {}
, extraMeta ? {}
, argsOverride ? {}
, ... } @ args:
let
version = "5.11.4-rt11"; # updated by ./update-rt.sh
branch = lib.versions.majorMinor version;
kversion = builtins.elemAt (lib.splitString "-" version) 0;
in buildLinux (args // {
inherit version;
# modDirVersion needs a patch number, change X.Y-rtZ to X.Y.0-rtZ.
modDirVersion = if (builtins.match "[^.]*[.][^.]*-.*" version) == null then version
else lib.replaceStrings ["-"] [".0-"] version;
src = fetchurl {
url = "mirror://kernel/linux/kernel/v5.x/linux-${kversion}.tar.xz";
sha256 = "1i8dfw83ndaylwji7lazfckk113plvnz7kh1yppbfg35r6przrc8";
};
kernelPatches = let rt-patch = {
name = "rt";
patch = fetchurl {
url = "mirror://kernel/linux/kernel/projects/rt/${branch}/older/patch-${version}.patch.xz";
sha256 = "1az6cn9jj3bnjgwzzrjy1adnrnn06p2vzsnc1iib4xhs0sfr27hc";
};
}; in [ rt-patch ] ++ kernelPatches;
structuredExtraConfig = with lib.kernel; {
PREEMPT_RT = yes;
# Fix error: unused option: PREEMPT_RT.
EXPERT = yes; # PREEMPT_RT depends on it (in kernel/Kconfig.preempt)
# Fix error: option not set correctly: PREEMPT_VOLUNTARY (wanted 'y', got 'n').
PREEMPT_VOLUNTARY = lib.mkForce no; # PREEMPT_RT deselects it.
# Fix error: unused option: RT_GROUP_SCHED.
RT_GROUP_SCHED = lib.mkForce (option no); # Removed by sched-disable-rt-group-sched-on-rt.patch.
} // structuredExtraConfig;
extraMeta = extraMeta // {
inherit branch;
};
} // argsOverride)
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