2024-02-04 05:56:19 +00:00
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{ lib, buildLinux, fetchurl
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, kernelPatches ? [ ]
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, structuredExtraConfig ? {}
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, extraMeta ? {}
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, argsOverride ? {}
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, ... } @ args:
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let
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2024-09-30 15:06:31 +00:00
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version = "6.6.52-rt43"; # updated by ./update-rt.sh
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2024-02-04 05:56:19 +00:00
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branch = lib.versions.majorMinor version;
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kversion = builtins.elemAt (lib.splitString "-" version) 0;
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in buildLinux (args // {
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inherit version;
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2024-05-29 18:42:11 +00:00
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pname = "linux-rt";
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2024-02-04 05:56:19 +00:00
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# modDirVersion needs a patch number, change X.Y-rtZ to X.Y.0-rtZ.
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modDirVersion = if (builtins.match "[^.]*[.][^.]*-.*" version) == null then version
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else lib.replaceStrings ["-"] [".0-"] version;
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src = fetchurl {
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url = "mirror://kernel/linux/kernel/v6.x/linux-${kversion}.tar.xz";
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2024-09-30 15:06:31 +00:00
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sha256 = "1f5l6y7abscm01dr740fzvq8r756ar854n0i299smm4rhcsap48m";
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2024-02-04 05:56:19 +00:00
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};
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kernelPatches = let rt-patch = {
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name = "rt";
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patch = fetchurl {
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url = "mirror://kernel/linux/kernel/projects/rt/${branch}/older/patch-${version}.patch.xz";
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2024-09-30 15:06:31 +00:00
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sha256 = "0g33n9idc3lhbj5z637zm3bgqh601a05cl1s8ji8zbnfh971jcgh";
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2024-02-04 05:56:19 +00:00
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};
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}; in [ rt-patch ] ++ kernelPatches;
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structuredExtraConfig = with lib.kernel; {
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PREEMPT_RT = yes;
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# Fix error: unused option: PREEMPT_RT.
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EXPERT = yes; # PREEMPT_RT depends on it (in kernel/Kconfig.preempt)
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# Fix error: option not set correctly: PREEMPT_VOLUNTARY (wanted 'y', got 'n').
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PREEMPT_VOLUNTARY = lib.mkForce no; # PREEMPT_RT deselects it.
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# Fix error: unused option: RT_GROUP_SCHED.
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RT_GROUP_SCHED = lib.mkForce (option no); # Removed by sched-disable-rt-group-sched-on-rt.patch.
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} // structuredExtraConfig;
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extraMeta = extraMeta // {
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inherit branch;
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};
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} // argsOverride)
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