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23 lines
738 B
Nix
23 lines
738 B
Nix
inputs:
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{
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options.nixos.system.sysctl = let inherit (inputs.lib) mkOption types; in
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{
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laptop-mode = mkOption { type = types.nullOr types.int; default = null; };
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};
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config = let inherit (inputs.config.nixos.system) sysctl; in inputs.lib.mkMerge
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[
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{
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boot.kernel.sysctl =
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{
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"vm.oom_kill_allocating_task" = true;
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"vm.oom_dump_tasks" = false;
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"vm.overcommit_memory" = inputs.lib.mkDefault 1;
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"kernel.sysrq" = 438;
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# set to larger value, otherwise the system will be very slow on low memory machines
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"vm.vfs_cache_pressure" = 100;
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};
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}
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(inputs.lib.mkIf (sysctl.laptop-mode != null) { boot.kernel.sysctl."vm.laptop_mode" = sysctl.laptop-mode; })
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];
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}
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