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{ lib, stdenv, fetchFromGitHub, buildLinux, ... } @ args:
let
# comments with variant added for update script
# ./update-zen.py zen
zenVariant = {
version = "6.6.1"; #zen
suffix = "zen1"; #zen
sha256 = "13m820wggf6pkp351w06mdn2lfcwbn08ydwksyxilqb88vmr0lpq"; #zen
isLqx = false;
};
# ./update-zen.py lqx
lqxVariant = {
version = "6.5.11"; #lqx
suffix = "lqx2"; #lqx
sha256 = "0rak2ald95bwb5qlp8pf2g93a0gkv8rypiv5s8dpds3cilwmxrg9"; #lqx
isLqx = true;
};
zenKernelsFor = { version, suffix, sha256, isLqx }: buildLinux (args // {
inherit version;
modDirVersion = lib.versions.pad 3 "${version}-${suffix}";
isZen = true;
src = fetchFromGitHub {
owner = "zen-kernel";
repo = "zen-kernel";
rev = "v${version}-${suffix}";
inherit sha256;
};
# This is based on the following sources:
# - zen: https://gitlab.archlinux.org/archlinux/packaging/packages/linux-zen/-/blob/main/config
# - lqx: https://github.com/damentz/liquorix-package/blob/6.4/master/linux-liquorix/debian/config/kernelarch-x86/config-arch-64
# - Liquorix features: https://liquorix.net/
# The list below is not exhaustive, so the kernels probably doesn't match
# the upstream, but should bring most of the improvements that will be
# expected by users
structuredExtraConfig = with lib.kernel; {
# Zen Interactive tuning
ZEN_INTERACTIVE = yes;
# FQ-Codel Packet Scheduling
NET_SCH_DEFAULT = yes;
DEFAULT_FQ_CODEL = yes;
DEFAULT_NET_SCH = freeform "fq_codel";
# Preempt (low-latency)
PREEMPT = lib.mkOverride 60 yes;
PREEMPT_VOLUNTARY = lib.mkOverride 60 no;
# Preemptible tree-based hierarchical RCU
TREE_RCU = yes;
PREEMPT_RCU = yes;
RCU_EXPERT = yes;
TREE_SRCU = yes;
TASKS_RCU_GENERIC = yes;
TASKS_RCU = yes;
TASKS_RUDE_RCU = yes;
TASKS_TRACE_RCU = yes;
RCU_STALL_COMMON = yes;
RCU_NEED_SEGCBLIST = yes;
RCU_FANOUT = freeform "64";
RCU_FANOUT_LEAF = freeform "16";
RCU_BOOST = yes;
RCU_BOOST_DELAY = freeform "500";
RCU_NOCB_CPU = yes;
RCU_LAZY = yes;
# Futex WAIT_MULTIPLE implementation for Wine / Proton Fsync.
FUTEX = yes;
FUTEX_PI = yes;
# Preemptive Full Tickless Kernel at 1000Hz
HZ = freeform "1000";
HZ_1000 = yes;
} // lib.optionalAttrs (isLqx) {
# Google's BBRv3 TCP congestion Control
TCP_CONG_BBR = yes;
DEFAULT_BBR = yes;
DEFAULT_TCP_CONG = freeform "bbr";
# PDS Process Scheduler
SCHED_ALT = yes;
SCHED_PDS = yes;
# Swap storage is compressed with LZ4 using zswap
ZSWAP_COMPRESSOR_DEFAULT_LZ4 = yes;
ZSWAP_COMPRESSOR_DEFAULT = freeform "lz4";
# Fix error: unused option: XXX.
CFS_BANDWIDTH = lib.mkForce (option no);
PSI = lib.mkForce (option no);
RT_GROUP_SCHED = lib.mkForce (option no);
SCHED_AUTOGROUP = lib.mkForce (option no);
SCHED_CORE = lib.mkForce (option no);
# ERROR: modpost: "sched_numa_hop_mask" [drivers/net/ethernet/mellanox/mlx5/core/mlx5_core.ko] undefined!
MLX5_CORE = no;
};
passthru.updateScript = [ ./update-zen.py (if isLqx then "lqx" else "zen") ];
extraMeta = {
branch = lib.versions.majorMinor version + "/master";
maintainers = with lib.maintainers; [ thiagokokada jerrysm64 ];
description = "Built using the best configuration and kernel sources for desktop, multimedia, and gaming workloads." +
lib.optionalString isLqx " (Same as linux_zen, but less aggressive release schedule and additional extra config)";
broken = stdenv.isAarch64;
};
} // (args.argsOverride or { }));
in
{
zen = zenKernelsFor zenVariant;
lqx = zenKernelsFor lqxVariant;
}
|