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53 lines
1.2 KiB
Nix
53 lines
1.2 KiB
Nix
{ config, lib, pkgs, ... }:
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with lib;
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let
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cpupower = config.boot.kernelPackages.cpupower;
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cfg = config.powerManagement;
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in
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{
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###### interface
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options = {
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powerManagement.cpuFreqGovernor = mkOption {
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type = types.nullOr types.str;
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default = null;
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example = "ondemand";
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description = ''
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Configure the governor used to regulate the frequence of the
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available CPUs. By default, the kernel configures the
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on-demand governor.
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'';
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};
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};
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###### implementation
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config = mkIf (!config.boot.isContainer && config.powerManagement.cpuFreqGovernor != null) {
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boot.kernelModules = [ "cpufreq_${cfg.cpuFreqGovernor}" ];
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environment.systemPackages = [ cpupower ];
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systemd.services.cpufreq = {
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description = "CPU Frequency Governor Setup";
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after = [ "systemd-modules-load.service" ];
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wantedBy = [ "multi-user.target" ];
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path = [ cpupower ];
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unitConfig.ConditionVirtualization = false;
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serviceConfig = {
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Type = "oneshot";
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RemainAfterExit = "yes";
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ExecStart = "${cpupower}/bin/cpupower frequency-set -g ${cfg.cpuFreqGovernor}";
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SuccessExitStatus = "0 237";
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};
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};
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};
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}
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