mirror of
https://github.com/NixOS/nixpkgs.git
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be1d7789aa
This is based on the following sources: - https://gitlab.archlinux.org/archlinux/packaging/packages/linux-zen/-/blob/main/config - https://github.com/damentz/liquorix-package/blob/6.4/master/linux-liquorix/debian/config/kernelarch-x86/config-arch-64 - https://liquorix.net/ This is not supposed to be exhaustive, so we may not completely match upstream here. However, we should get most of the improvements in upstream webpage, and there is always space for further tuning in the future. Fixes: #241986
116 lines
3.7 KiB
Nix
116 lines
3.7 KiB
Nix
{ lib, 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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};
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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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