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Merge pull request #90144 from pbogdan/undervolt

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nixos/undervolt: misc cleanups / fixes
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Lassulus 2020-06-18 11:52:09 +02:00 committed by GitHub
parent 217f844406 afae933693
commit 7dcb8dc239
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GPG key ID: 4AEE18F83AFDEB23
1 changed files with 38 additions and 41 deletions
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79
nixos/modules/services/hardware/undervolt.nix
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@ -1,18 +1,32 @@
{ config, pkgs, lib, ... }:
with lib;
let
cfg = config.services.undervolt;
in {
cliArgs = lib.cli.toGNUCommandLineShell {} {
inherit (cfg)
verbose
temp
;
# `core` and `cache` are both intentionally set to `cfg.coreOffset` as according to the undervolt docs:
#
# Core or Cache offsets have no effect. It is not possible to set different offsets for
# CPU Core and Cache. The CPU will take the smaller of the two offsets, and apply that to
# both CPU and Cache. A warning message will be displayed if you attempt to set different offsets.
core = cfg.coreOffset;
cache = cfg.coreOffset;
gpu = cfg.gpuOffset;
uncore = cfg.uncoreOffset;
analogio = cfg.analogioOffset;
temp-bat = cfg.tempBat;
temp-ac = cfg.tempAc;
};
in
{
options.services.undervolt = {
enable = mkOption {
type = types.bool;
default = false;
description = ''
Whether to undervolt intel cpus.
'';
};
enable = mkEnableOption
"Intel CPU undervolting service (WARNING: may permanently damage your hardware!)";
verbose = mkOption {
type = types.bool;
@ -32,58 +46,58 @@ in {
};
coreOffset = mkOption {
type = types.nullOr types.str;
type = types.nullOr types.int;
default = null;
description = ''
The amount of voltage to offset the CPU cores by. Accepts a floating point number.
The amount of voltage in mV to offset the CPU cores by.
'';
};
gpuOffset = mkOption {
type = types.nullOr types.str;
type = types.nullOr types.int;
default = null;
description = ''
The amount of voltage to offset the GPU by. Accepts a floating point number.
The amount of voltage in mV to offset the GPU by.
'';
};
uncoreOffset = mkOption {
type = types.nullOr types.str;
type = types.nullOr types.int;
default = null;
description = ''
The amount of voltage to offset uncore by. Accepts a floating point number.
The amount of voltage in mV to offset uncore by.
'';
};
analogioOffset = mkOption {
type = types.nullOr types.str;
type = types.nullOr types.int;
default = null;
description = ''
The amount of voltage to offset analogio by. Accepts a floating point number.
The amount of voltage in mV to offset analogio by.
'';
};
temp = mkOption {
type = types.nullOr types.str;
type = types.nullOr types.int;
default = null;
description = ''
The temperature target. Accepts a floating point number.
The temperature target in Celsius degrees.
'';
};
tempAc = mkOption {
type = types.nullOr types.str;
type = types.nullOr types.int;
default = null;
description = ''
The temperature target on AC power. Accepts a floating point number.
The temperature target on AC power in Celsius degrees.
'';
};
tempBat = mkOption {
type = types.nullOr types.str;
type = types.nullOr types.int;
default = null;
description = ''
The temperature target on battery power. Accepts a floating point number.
The temperature target on battery power in Celsius degrees.
'';
};
};
@ -100,24 +114,7 @@ in {
serviceConfig = {
Type = "oneshot";
Restart = "no";
# `core` and `cache` are both intentionally set to `cfg.coreOffset` as according to the undervolt docs:
#
# Core or Cache offsets have no effect. It is not possible to set different offsets for
# CPU Core and Cache. The CPU will take the smaller of the two offsets, and apply that to
# both CPU and Cache. A warning message will be displayed if you attempt to set different offsets.
ExecStart = ''
${pkgs.undervolt}/bin/undervolt \
${optionalString cfg.verbose "--verbose"} \
${optionalString (cfg.coreOffset != null) "--core ${cfg.coreOffset}"} \
${optionalString (cfg.coreOffset != null) "--cache ${cfg.coreOffset}"} \
${optionalString (cfg.gpuOffset != null) "--gpu ${cfg.gpuOffset}"} \
${optionalString (cfg.uncoreOffset != null) "--uncore ${cfg.uncoreOffset}"} \
${optionalString (cfg.analogioOffset != null) "--analogio ${cfg.analogioOffset}"} \
${optionalString (cfg.temp != null) "--temp ${cfg.temp}"} \
${optionalString (cfg.tempAc != null) "--temp-ac ${cfg.tempAc}"} \
${optionalString (cfg.tempBat != null) "--temp-bat ${cfg.tempBat}"}
'';
ExecStart = "${pkgs.undervolt}/bin/undervolt ${cliArgs}";
};
};