commit 4142020e459b52658fd56714f50cf4ccc56d66e4 · pyrox.dev/nixpkgs

nixos/modules/module-list.nix

···

       281
       281
        
         ./services/hardware/upower.nix

     

       282
       282
        
         ./services/hardware/usbmuxd.nix

     

       283
       283
        
         ./services/hardware/thermald.nix

     

       284
       284
       +
         ./services/hardware/undervolt.nix

     

       284
       285
        
         ./services/logging/SystemdJournal2Gelf.nix

     

       285
       286
        
         ./services/logging/awstats.nix

     

       286
       287
        
         ./services/logging/fluentd.nix

+134

nixos/modules/services/hardware/undervolt.nix

···

       1
       1
       +
       { config, pkgs, lib, ... }:

     

       2
       2
       +
       

     

       3
       3
       +
       with lib;

     

       4
       4
       +
       

     

       5
       5
       +
       let

     

       6
       6
       +
         cfg = config.services.undervolt;

     

       7
       7
       +
       in {

     

       8
       8
       +
         options.services.undervolt = {

     

       9
       9
       +
           enable = mkOption {

     

       10
       10
       +
             type = types.bool;

     

       11
       11
       +
             default = false;

     

       12
       12
       +
             description = ''

     

       13
       13
       +
               Whether to undervolt intel cpus.

     

       14
       14
       +
             '';

     

       15
       15
       +
           };

     

       16
       16
       +
       

     

       17
       17
       +
           verbose = mkOption {

     

       18
       18
       +
             type = types.bool;

     

       19
       19
       +
             default = false;

     

       20
       20
       +
             description = ''

     

       21
       21
       +
               Whether to enable verbose logging.

     

       22
       22
       +
             '';

     

       23
       23
       +
           };

     

       24
       24
       +
       

     

       25
       25
       +
           package = mkOption {

     

       26
       26
       +
             type = types.package;

     

       27
       27
       +
             default = pkgs.undervolt;

     

       28
       28
       +
             defaultText = "pkgs.undervolt";

     

       29
       29
       +
             description = ''

     

       30
       30
       +
               undervolt derivation to use.

     

       31
       31
       +
             '';

     

       32
       32
       +
           };

     

       33
       33
       +
       

     

       34
       34
       +
           coreOffset = mkOption {

     

       35
       35
       +
             type = types.nullOr types.str;

     

       36
       36
       +
             default = null;

     

       37
       37
       +
             description = ''

     

       38
       38
       +
               The amount of voltage to offset the CPU cores by. Accepts a floating point number.

     

       39
       39
       +
             '';

     

       40
       40
       +
           };

     

       41
       41
       +
       

     

       42
       42
       +
           gpuOffset = mkOption {

     

       43
       43
       +
             type = types.nullOr types.str;

     

       44
       44
       +
             default = null;

     

       45
       45
       +
             description = ''

     

       46
       46
       +
               The amount of voltage to offset the GPU by. Accepts a floating point number.

     

       47
       47
       +
             '';

     

       48
       48
       +
           };

     

       49
       49
       +
       

     

       50
       50
       +
           uncoreOffset = mkOption {

     

       51
       51
       +
             type = types.nullOr types.str;

     

       52
       52
       +
             default = null;

     

       53
       53
       +
             description = ''

     

       54
       54
       +
               The amount of voltage to offset uncore by. Accepts a floating point number.

     

       55
       55
       +
             '';

     

       56
       56
       +
           };

     

       57
       57
       +
       

     

       58
       58
       +
           analogioOffset = mkOption {

     

       59
       59
       +
             type = types.nullOr types.str;

     

       60
       60
       +
             default = null;

     

       61
       61
       +
             description = ''

     

       62
       62
       +
               The amount of voltage to offset analogio by. Accepts a floating point number.

     

       63
       63
       +
             '';

     

       64
       64
       +
           };

     

       65
       65
       +
       

     

       66
       66
       +
           temp = mkOption {

     

       67
       67
       +
             type = types.nullOr types.str;

     

       68
       68
       +
             default = null;

     

       69
       69
       +
             description = ''

     

       70
       70
       +
               The temperature target. Accepts a floating point number.

     

       71
       71
       +
             '';

     

       72
       72
       +
           };

     

       73
       73
       +
       

     

       74
       74
       +
           tempAc = mkOption {

     

       75
       75
       +
             type = types.nullOr types.str;

     

       76
       76
       +
             default = null;

     

       77
       77
       +
             description = ''

     

       78
       78
       +
               The temperature target on AC power. Accepts a floating point number.

     

       79
       79
       +
             '';

     

       80
       80
       +
           };

     

       81
       81
       +
       

     

       82
       82
       +
           tempBat = mkOption {

     

       83
       83
       +
             type = types.nullOr types.str;

     

       84
       84
       +
             default = null;

     

       85
       85
       +
             description = ''

     

       86
       86
       +
               The temperature target on battery power. Accepts a floating point number.

     

       87
       87
       +
             '';

     

       88
       88
       +
           };

     

       89
       89
       +
         };

     

       90
       90
       +
       

     

       91
       91
       +
         config = mkIf cfg.enable {

     

       92
       92
       +
           boot.kernelModules = [ "msr" ];

     

       93
       93
       +
       

     

       94
       94
       +
           environment.systemPackages = [ cfg.package ];

     

       95
       95
       +
       

     

       96
       96
       +
           systemd.services.undervolt = {

     

       97
       97
       +
             path = [ pkgs.undervolt ];

     

       98
       98
       +
       

     

       99
       99
       +
             description = "Intel Undervolting Service";

     

       100
       100
       +
             serviceConfig = {

     

       101
       101
       +
               Type = "oneshot";

     

       102
       102
       +
               Restart = "no";

     

       103
       103
       +
       

     

       104
       104
       +
               # `core` and `cache` are both intentionally set to `cfg.coreOffset` as according to the undervolt docs:

     

       105
       105
       +
               #

     

       106
       106
       +
               #     Core or Cache offsets have no effect. It is not possible to set different offsets for

     

       107
       107
       +
               #     CPU Core and Cache. The CPU will take the smaller of the two offsets, and apply that to

     

       108
       108
       +
               #     both CPU and Cache. A warning message will be displayed if you attempt to set different offsets.

     

       109
       109
       +
               ExecStart = ''

     

       110
       110
       +
                 ${pkgs.undervolt}/bin/undervolt \

     

       111
       111
       +
                   ${optionalString cfg.verbose "--verbose"} \

     

       112
       112
       +
                   ${optionalString (cfg.coreOffset != null) "--core ${cfg.coreOffset}"} \

     

       113
       113
       +
                   ${optionalString (cfg.coreOffset != null) "--cache ${cfg.coreOffset}"} \

     

       114
       114
       +
                   ${optionalString (cfg.gpuOffset != null) "--gpu ${cfg.gpuOffset}"} \

     

       115
       115
       +
                   ${optionalString (cfg.uncoreOffset != null) "--uncore ${cfg.uncoreOffset}"} \

     

       116
       116
       +
                   ${optionalString (cfg.analogioOffset != null) "--analogio ${cfg.analogioOffset}"} \

     

       117
       117
       +
                   ${optionalString (cfg.temp != null) "--temp ${cfg.temp}"} \

     

       118
       118
       +
                   ${optionalString (cfg.tempAc != null) "--temp-ac ${cfg.tempAc}"} \

     

       119
       119
       +
                   ${optionalString (cfg.tempBat != null) "--temp-bat ${cfg.tempBat}"}

     

       120
       120
       +
               '';

     

       121
       121
       +
             };

     

       122
       122
       +
           };

     

       123
       123
       +
       

     

       124
       124
       +
           systemd.timers.undervolt = {

     

       125
       125
       +
             description = "Undervolt timer to ensure voltage settings are always applied";

     

       126
       126
       +
             partOf = [ "undervolt.service" ];

     

       127
       127
       +
             wantedBy = [ "multi-user.target" ];

     

       128
       128
       +
             timerConfig = {

     

       129
       129
       +
               OnBootSec = "2min";

     

       130
       130
       +
               OnUnitActiveSec = "30";

     

       131
       131
       +
             };

     

       132
       132
       +
           };

     

       133
       133
       +
         };

     

       134
       134
       +
       }