116 lines
3.7 KiB
Nix
116 lines
3.7 KiB
Nix
{ lib, stdenv, fetchFromGitHub, buildLinux, ... } @ args:
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let
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# comments with variant added for update script
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# ./update-zen.py zen
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zenVariant = {
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version = "6.4.2"; #zen
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suffix = "zen1"; #zen
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sha256 = "1swd3y97w55wh9vl6k1bsrx6fqi6b6ssbw306h87nxn36xwzx8cd"; #zen
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isLqx = false;
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};
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# ./update-zen.py lqx
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lqxVariant = {
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version = "6.4.2"; #lqx
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suffix = "lqx1"; #lqx
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sha256 = "14hr88lbwm2pz3knw6nxlahdk4pwwb4ya63mrd7zg7g1x2xhfb59"; #lqx
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isLqx = true;
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};
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zenKernelsFor = { version, suffix, sha256, isLqx }: buildLinux (args // {
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inherit version;
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modDirVersion = lib.versions.pad 3 "${version}-${suffix}";
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isZen = true;
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src = fetchFromGitHub {
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owner = "zen-kernel";
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repo = "zen-kernel";
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rev = "v${version}-${suffix}";
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inherit sha256;
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};
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# This is based on the following sources:
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# - zen: https://gitlab.archlinux.org/archlinux/packaging/packages/linux-zen/-/blob/main/config
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# - lqx: https://github.com/damentz/liquorix-package/blob/6.4/master/linux-liquorix/debian/config/kernelarch-x86/config-arch-64
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# - Liquorix features: https://liquorix.net/
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# The list below is not exhaustive, so the kernels probably doesn't match
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# the upstream, but should bring most of the improvements that will be
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# expected by users
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structuredExtraConfig = with lib.kernel; {
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# Zen Interactive tuning
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ZEN_INTERACTIVE = yes;
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# FQ-Codel Packet Scheduling
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NET_SCH_DEFAULT = yes;
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DEFAULT_FQ_CODEL = yes;
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DEFAULT_NET_SCH = freeform "fq_codel";
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# Preempt (low-latency)
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PREEMPT = lib.mkOverride 60 yes;
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PREEMPT_VOLUNTARY = lib.mkOverride 60 no;
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# Preemptible tree-based hierarchical RCU
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TREE_RCU = yes;
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PREEMPT_RCU = yes;
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RCU_EXPERT = yes;
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TREE_SRCU = yes;
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TASKS_RCU_GENERIC = yes;
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TASKS_RCU = yes;
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TASKS_RUDE_RCU = yes;
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TASKS_TRACE_RCU = yes;
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RCU_STALL_COMMON = yes;
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RCU_NEED_SEGCBLIST = yes;
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RCU_FANOUT = freeform "64";
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RCU_FANOUT_LEAF = freeform "16";
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RCU_BOOST = yes;
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RCU_BOOST_DELAY = freeform "500";
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RCU_NOCB_CPU = yes;
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RCU_LAZY = yes;
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# Futex WAIT_MULTIPLE implementation for Wine / Proton Fsync.
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FUTEX = yes;
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FUTEX_PI = yes;
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# Preemptive Full Tickless Kernel at 1000Hz
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HZ = freeform "1000";
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HZ_1000 = yes;
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} // lib.optionalAttrs (isLqx) {
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# Google's BBRv2 TCP congestion Control
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TCP_CONG_BBR2 = yes;
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DEFAULT_BBR2 = yes;
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DEFAULT_TCP_CONG = freeform "bbr2";
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# PDS Process Scheduler
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SCHED_ALT = yes;
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SCHED_PDS = yes;
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# Swap storage is compressed with LZ4 using zswap
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ZSWAP_COMPRESSOR_DEFAULT_LZ4 = yes;
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ZSWAP_COMPRESSOR_DEFAULT = freeform "lz4";
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# Fix error: unused option: XXX.
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CFS_BANDWIDTH = lib.mkForce (option no);
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PSI = lib.mkForce (option no);
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RT_GROUP_SCHED = lib.mkForce (option no);
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SCHED_AUTOGROUP = lib.mkForce (option no);
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SCHED_CORE = lib.mkForce (option no);
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# ERROR: modpost: "sched_numa_hop_mask" [drivers/net/ethernet/mellanox/mlx5/core/mlx5_core.ko] undefined!
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MLX5_CORE = no;
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};
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passthru.updateScript = [ ./update-zen.py (if isLqx then "lqx" else "zen") ];
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extraMeta = {
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branch = lib.versions.majorMinor version + "/master";
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maintainers = with lib.maintainers; [ thiagokokada ];
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description = "Built using the best configuration and kernel sources for desktop, multimedia, and gaming workloads." +
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lib.optionalString isLqx " (Same as linux_zen, but less aggressive release schedule and additional extra config)";
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broken = stdenv.isAarch64;
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};
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} // (args.argsOverride or { }));
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in
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{
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zen = zenKernelsFor zenVariant;
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lqx = zenKernelsFor lqxVariant;
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}
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