flakes/packages/linux-lava/default.nix

{
  buildLinux,
  kernelPatches,
  lib,
  ...
} @ args:
let
  major = "5";
  minor = "12";
  patch = "13";
  tkg = "2da317c20ed6f70085b195639b9aad2cacf31ab5";

  mm = "${major}.${minor}";
  mmp = "${major}.${minor}.${patch}";

  kernelUrl = name: sha256: builtins.fetchurl {
    inherit sha256;
    url = "https://cdn.kernel.org/pub/linux/kernel/v${major}.x/${name}.xz";
  };

  tkgPatch = name: sha256: {
    inherit name;
    patch = builtins.fetchurl {
      inherit sha256;
      url = "https://raw.githubusercontent.com/Frogging-Family/linux-tkg/${tkg}/linux-tkg-patches/${mm}/${name}.patch";
    };
  };
in buildLinux (args // {
  version = "${mmp}-tkg-Lava";
  isZen = true;
  # TODO:
  # some stuff is set in pkgs/os-specific/linux/kernel/common-config.nix
  # but i have no idea how to change it
  structuredExtraConfig = with lib.kernel; builtins.mapAttrs (_: value: lib.mkForce value) {
    LOCALVERSION = freeform "-tkg-Lava";
    ZENIFY = yes;
    FUTEX2 = yes;
    MHASWELL = yes;
    WINESYNC = module;

    # timers
    HZ_PERIODIC = no;
    NO_HZ = yes;
    NO_HZ_COMMON = yes;
    NO_HZ_FULL = yes;
    NO_HZ_IDLE = no;
    CONTEXT_TRACKING = yes;
    CONTEXT_TRACKING_FORCE = yes;
    # HZ_100 = yes;
    HZ_1000 = yes;
    HZ_1000_NODEF = yes;

    # preempt
    PREEMPT = yes;
    PREEMPT_COUNT = yes;
    PREEMPT_VOLUNTARY = no;
    PREEMPTION = yes;
    PREEMPT_DYNAMIC = yes;

    # scheduler
    # SCHED_ALT = yes;
    # SCHED_PDS = yes;
    CACULE_SCHED = yes;

    # cacule stuff
    SCHED_AUTOGROUP = yes;
    BSD_PROCESS_ACCT = no;
    TASK_XACCT = no;
    CGROUP_CPUACCT = no;
    CGROUP_DEBUG = no;

    # disable numa
    NUMA = no;
    AMD_NUMA = no;
    X86_64_ACPI_NUMA = no;
    NODES_SPAN_OTHER_NODES = no;
    NUMA_EMU = no;
    NEED_MULTIPLE_NODES = no;
    USE_PERCPU_NUMA_NODE_ID = no;
    ACPI_NUMA = no;

    # disable misc debugging
    SLUB_DEBUG = no;
    PM_DEBUG = no;
    PM_ADVANCED_DEBUG = no;
    PM_SLEEP_DEBUG = no;
    ACPI_DEBUG = no;
    SCHED_DEBUG = no;
    LATENCYTOP = no;
    DEBUG_PREEMPT = no;
  };
  ignoreConfigErrors = true;

  src = kernelUrl "linux-${mm}.tar" "0rn3z942vjc7bixjw066rm6kcr0x0wzgxqfq1f6xd113pzrgc3bx";
  kernelPatches = [
    # Kernel version patch
    {
      name = "patch-${patch}";
      patch = kernelUrl "patch-${mmp}" "17d38hns5qfbw1pajpa5y38v86r49nqnw7a3pwsay5fapj69z8w4";
    }

    # AMD SI manual clocking
    {
      name = "si-clock";
      patch = ./si-manual-clocking.patch;
    }

    # Graysky gcc patches
    {
      name = "graysky-gcc";
      patch = builtins.fetchurl {
        url = "https://raw.githubusercontent.com/graysky2/kernel_gcc_patch/d2e7942c19ee568638d3795cf52db5274a90ce0a/more-uarches-for-kernel-5.8+.patch";
        sha256 = "16jbknjlg12jxbj8cjkk01djvr01n9zz7qlzxppcqizmz55vk0wh";
      };
    }

    # TK-Glitch patches
    ( tkgPatch "0002-clear-patches"           "1h1gx6rq2c961d36z1szqv9xpq1xgz2bhqjsyb03jjdrdzlcv9rm" )
    ( tkgPatch "0003-cacule-${mm}"            "1rgdk1x514xsjwcjjcdmggbaj6biql5p41skn98ysqbjaw7k22ib" )
    ( tkgPatch "0003-glitched-base"           "1dg177i3y54z5nadc5678hm67angram2vlr314mpxv3jgsh7vj8s" )
    ( tkgPatch "0003-glitched-cfs"            "1cm4s72pymxnh37da84qrzvrwbbwagk46m1xsk99ir7cjb1l1zay" )
    # ( tkgPatch "0005-glitched-pds"            "0833awp8n9ngyl5spx8znwyw1lj3nacp8vg7ffysw0j5r8akv9pw" )
    ( tkgPatch "0007-v${mm}-fsync"            "0mplwdglw58bmkkxix4ccwgax3r02gahax9042dx33mybdnbl0mk" )
    ( tkgPatch "0007-v${mm}-futex2_interface" "1j29zyx2s85scfhbprgb9cs11rp50glbzczl4plphli8wds342pw" )
    ( tkgPatch "0007-v${mm}-winesync"         "1av2k86ns0zc3lmgbfdch1z2a808brp2jvsfl4cwwlwwb51qzipp" )
    # ( tkgPatch "0009-prjc_v${mm}-r1"          "1z731jiwyc7z4d5hzd6szrxnvw0iygbqx82y2anzm32n22731dqv" )
    ( tkgPatch "0012-misc-additions"          "092ws9v1snk61i6x3gbqm5m803zd81wykkdxizn7knvy2r611cbz")
  ];
} // (args.argsOverride or {}))