44 lines
905 B
Nix
44 lines
905 B
Nix
{ config, pkgs, ... }:
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with pkgs.lib;
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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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default = "";
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example = "ondemand";
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type = types.uniq types.string;
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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 governor
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"userspace".
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'';
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};
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};
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###### implementation
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config = mkIf (config.powerManagement.cpuFreqGovernor != "") {
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environment.systemPackages = [ pkgs.cpufrequtils ];
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jobs.cpufreq =
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{ description = "Initialize CPU frequency governor";
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startOn = "started udev";
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preStart = ''
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for i in $(seq 0 $(($(nproc) - 1))); do
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${pkgs.cpufrequtils}/bin/cpufreq-set -g ${config.powerManagement.cpuFreqGovernor} -c $i
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done
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'';
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};
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};
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}
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