nichts/hosts/temperance/kernel/xanmod.nix

{
  lib,
  stdenv,
  fetchFromGitHub,
  buildLinux,
  kernelPatches,
  ...
}: let
  pname = "linux-xanmod";
  version = "6.11.5";
  vendorSuffix = "xanmod1";
  modDirVersion = lib.versions.pad 3 "${version}-xanmod1";

  inherit (lib.modules) mkForce;
  inherit (lib.kernel) freeform yes no;
  xanmod_blox = buildLinux {
    inherit pname version modDirVersion;

    src = fetchFromGitHub {
      owner = "xanmod";
      repo = "linux";
      rev = "refs/tags/${version}-${vendorSuffix}";
      hash = "sha256-G4u0LQtIeJ0dNAmjNH0OKihmbkivYVbrbXDB9vPw2xI=";
    };

    kernelPatches = [
      kernelPatches.bridge_stp_helper
      kernelPatches.request_key_helper
    ];

    enableCommonConfig = true;
    # Default Xanmod options
    structuredExtraConfig = {
      # CPUFreq governor Performance
      CPU_FREQ_DEFAULT_GOV_PERFORMANCE = mkForce 60 yes;
      CPU_FREQ_DEFAULT_GOV_SCHEDUTIL = mkForce 60 no;

      # Full preemption
      PREEMPT = mkForce 60 yes;
      PREEMPT_VOLUNTARY = mkForce 60 no;

      # Google's BBRv3 TCP congestion Control
      TCP_CONG_BBR = yes;
      DEFAULT_BBR = yes;

      # Preemptive Full Tickless Kernel at 250Hz
      HZ = freeform "250";
      HZ_250 = yes;
      HZ_1000 = no;

      # RCU_BOOST and RCU_EXP_KTHREAD
      RCU_EXPERT = yes;
      RCU_FANOUT = freeform "64";
      RCU_FANOUT_LEAF = freeform "16";
      RCU_BOOST = yes;
      RCU_BOOST_DELAY = freeform "0";
      RCU_EXP_KTHREAD = yes;
    };
  };
in {
  inherit
    xanmod_blox
    ;
}