47 lines
1.2 KiB
Nix
47 lines
1.2 KiB
Nix
{ ... }: { config, lib, ... }:
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let
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cfg = config.hardware.cpu.clusters;
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concat = lib.concatMapStringsSep "," toString;
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performance = concat cfg.performance;
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efficiency = concat cfg.efficiency;
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in {
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options = {
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hardware.cpu.clusters = {
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performance = lib.mkOption {
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type = with lib.types; listOf ints.unsigned;
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default = [ ];
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description = "List of performance CPUs";
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};
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efficiency = lib.mkOption {
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type = with lib.types; listOf ints.unsigned;
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default = [ ];
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description = "List of efficiency CPUs";
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};
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};
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};
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config = lib.mkIf (cfg.performance != [ ] && cfg.efficiency != [ ]) {
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boot.kernelParams = [
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"irqaffinity=${efficiency}"
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"nohz_full=${performance}"
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"rcu_nocbs=all"
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];
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systemd.slices = lib.genAttrs [ "system" ] (slice: {
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sliceConfig.AllowedCPUs = efficiency;
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});
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systemd.user.slices = lib.genAttrs [ "session" "app" ] (slice: {
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sliceConfig.AllowedCPUs = efficiency;
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});
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assertions = lib.singleton {
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assertion = lib.mutuallyExclusive cfg.performance cfg.efficiency;
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message = "Performance and efficiency clusters must not overlap";
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};
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};
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}
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