40 lines
775 B
Nix
40 lines
775 B
Nix
|
{ config, pkgs, ... }:
|
||
|
|
||
|
with pkgs.lib;
|
||
|
|
||
|
{
|
||
|
###### interface
|
||
|
|
||
|
options = {
|
||
|
cpuFreqGovernor = mkOption {
|
||
|
default = "";
|
||
|
example = "ondemand";
|
||
|
description = ''
|
||
|
Configure the governor used to regulate the frequence of the
|
||
|
available CPUs. By default, the kernel configures the governor
|
||
|
"userspace".
|
||
|
'';
|
||
|
};
|
||
|
};
|
||
|
|
||
|
|
||
|
###### implementation
|
||
|
|
||
|
config = mkIf (config.cpuFreqGovernor != "") ({
|
||
|
jobs.cpuFreq =
|
||
|
{ description = "Initialize CPU frequency governor";
|
||
|
|
||
|
startOn = "started udev";
|
||
|
|
||
|
task = true;
|
||
|
|
||
|
script = ''
|
||
|
for i in $(seq 0 $(($(nproc) - 1))); do
|
||
|
${pkgs.cpufrequtils}/bin/cpufreq-set -g ${config.cpuFreqGovernor} -c $i
|
||
|
done
|
||
|
'';
|
||
|
};
|
||
|
});
|
||
|
|
||
|
}
|