diff options
Diffstat (limited to 'nixos/modules/services/hardware/throttled.nix')
-rw-r--r-- | nixos/modules/services/hardware/throttled.nix | 36 |
1 files changed, 36 insertions, 0 deletions
diff --git a/nixos/modules/services/hardware/throttled.nix b/nixos/modules/services/hardware/throttled.nix new file mode 100644 index 00000000000..1905eb565c6 --- /dev/null +++ b/nixos/modules/services/hardware/throttled.nix @@ -0,0 +1,36 @@ +{ config, lib, pkgs, ... }: + +with lib; + +let + cfg = config.services.throttled; +in { + options = { + services.throttled = { + enable = mkEnableOption "fix for Intel CPU throttling"; + + extraConfig = mkOption { + type = types.str; + default = ""; + description = "Alternative configuration"; + }; + }; + }; + + config = mkIf cfg.enable { + systemd.packages = [ pkgs.throttled ]; + # The upstream package has this in Install, but that's not enough, see the NixOS manual + systemd.services.lenovo_fix.wantedBy = [ "multi-user.target" ]; + + environment.etc."lenovo_fix.conf".source = + if cfg.extraConfig != "" + then pkgs.writeText "lenovo_fix.conf" cfg.extraConfig + else "${pkgs.throttled}/etc/lenovo_fix.conf"; + + # Kernel 5.9 spams warnings whenever userspace writes to CPU MSRs. + # See https://github.com/erpalma/throttled/issues/215 + boot.kernelParams = + optional (versionAtLeast config.boot.kernelPackages.kernel.version "5.9") + "msr.allow_writes=on"; + }; +} |