nixpkgs/pkgs/os-specific/linux/kernel/linux-rt-5.4.nix
2021-08-12 15:05:26 +00:00

42 lines
1.4 KiB
Nix

{ lib, buildLinux, fetchurl
, kernelPatches ? [ ]
, structuredExtraConfig ? {}
, extraMeta ? {}
, argsOverride ? {}
, ... } @ args:
let
version = "5.4.138-rt62"; # updated by ./update-rt.sh
branch = lib.versions.majorMinor version;
kversion = builtins.elemAt (lib.splitString "-" version) 0;
in buildLinux (args // {
inherit version;
src = fetchurl {
url = "mirror://kernel/linux/kernel/v5.x/linux-${kversion}.tar.xz";
sha256 = "0mw6k9zrcmv1j4b3han5c0q8xbh38bka2wkkbl1y3ralg9r5ffd4";
};
kernelPatches = let rt-patch = {
name = "rt";
patch = fetchurl {
url = "mirror://kernel/linux/kernel/projects/rt/${branch}/older/patch-${version}.patch.xz";
sha256 = "1zw7806fxx9cai9n6siv534x5r52d8fc13r07ypgw461pijcy5p6";
};
}; 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)