mirror of
https://github.com/NixOS/nixpkgs.git
synced 2026-07-06 17:13:24 -05:00
102 lines
2.7 KiB
Nix
102 lines
2.7 KiB
Nix
{
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lib,
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stdenv,
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fetchFromGitHub,
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buildLinux,
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...
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}@args:
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let
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# Default priority is 100 for common kernel options (see common-config.nix
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# file), we need something lower to override them, but we still want users to
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# override options if they need using lib.mkForce (that has 50 priority)
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mkKernelOverride = lib.mkOverride 90;
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suffix = "zen1";
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in
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buildLinux (
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args
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// rec {
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version = "7.1.2";
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pname = "linux-zen";
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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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sha256 = "0d02lgwl0x415xrbznsldd7j1krpzlnbd2ciis3shz8zhmbhfg1f";
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};
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# This is based on the following source:
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# https://gitlab.archlinux.org/archlinux/packaging/packages/linux-zen/-/blob/main/config
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# The list below is not exhaustive, so the kernel 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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# Preempt (low-latency)
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PREEMPT = mkKernelOverride yes;
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PREEMPT_LAZY = mkKernelOverride 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 = option (freeform "500");
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RCU_NOCB_CPU = yes;
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RCU_LAZY = yes;
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RCU_DOUBLE_CHECK_CB_TIME = yes;
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# BFQ I/O scheduler
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IOSCHED_BFQ = mkKernelOverride 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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# NT synchronization primitive emulation
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NTSYNC = 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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};
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extraPassthru.updateScript = [
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./update-zen.py
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];
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extraMeta = {
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branch = lib.versions.majorMinor version + "/master";
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maintainers = with lib.maintainers; [
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thiagokokada
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jerrysm64
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axertheaxe
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];
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teams = [ ];
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description = "Built using the best configuration and kernel sources for desktop, multimedia, and gaming workloads.";
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broken = stdenv.hostPlatform.isAarch64;
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};
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}
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// (args.argsOverride or { })
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)
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