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|
{
lib,
stdenv,
fetchFromGitHub,
buildLinux,
...
}@args:
let
# Default priority is 100 for common kernel options (see common-config.nix
# file), we need something lower to override them, but we still want users to
# override options if they need using lib.mkForce (that has 50 priority)
mkKernelOverride = lib.mkOverride 90;
suffix = "zen2";
in
buildLinux (
args
// rec {
version = "7.2.4";
pname = "linux-zen";
modDirVersion = lib.versions.pad 3 "${version}-${suffix}";
isZen = true;
src = fetchFromGitHub {
owner = "zen-kernel";
repo = "zen-kernel";
rev = "v${version}-${suffix}";
sha256 = "1n8597gzym8fm9d18k4wczmngjg9id7dqgi8y8ak53iy6q0pwlsv";
};
# This is based on the following source:
# https://gitlab.archlinux.org/archlinux/packaging/packages/linux-zen/-/blob/main/config
# The list below is not exhaustive, so the kernel 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;
# Preempt (low-latency)
PREEMPT = mkKernelOverride yes;
PREEMPT_LAZY = mkKernelOverride 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 = option (freeform "500");
RCU_NOCB_CPU = yes;
RCU_LAZY = yes;
RCU_DOUBLE_CHECK_CB_TIME = yes;
# BFQ I/O scheduler
IOSCHED_BFQ = mkKernelOverride yes;
# Futex WAIT_MULTIPLE implementation for Wine / Proton Fsync.
FUTEX = yes;
FUTEX_PI = yes;
# NT synchronization primitive emulation
NTSYNC = yes;
# Preemptive Full Tickless Kernel at 1000Hz
HZ = freeform "1000";
HZ_1000 = yes;
};
extraPassthru.updateScript = [
./update-zen.py
];
extraMeta = {
branch = lib.versions.majorMinor version + "/master";
maintainers = with lib.maintainers; [
thiagokokada
jerrysm64
axertheaxe
];
teams = [ ];
description = "Built using the best configuration and kernel sources for desktop, multimedia, and gaming workloads.";
broken = stdenv.hostPlatform.isAarch64;
};
}
// (args.argsOverride or { })
)
|
