From 1bc6e50b18e8c563821a9202df15c8aa2223ef3b Mon Sep 17 00:00:00 2001
From: Aly Raffauf <aly@raffauflabs.com>
Date: Thu, 19 Dec 2024 11:19:46 -0500
Subject: [PATCH] hw/gaming: default to zen kernel

---
 hwModules/common/gaming/default.nix | 68 ++++++++++++++++-------------
 1 file changed, 38 insertions(+), 30 deletions(-)

diff --git a/hwModules/common/gaming/default.nix b/hwModules/common/gaming/default.nix
index 2630e9ea..3ac60ab3 100644
--- a/hwModules/common/gaming/default.nix
+++ b/hwModules/common/gaming/default.nix
@@ -1,37 +1,45 @@
-{lib, ...}: {
-  boot.kernel.sysctl = {
-    # Improved file monitoring
-    "fs.inotify.max_user_instances" = lib.mkOverride 100 8192; # Re-use the default from Bazzite even though the default NixOS value is higher.
-    # "fs.inotify.max_user_watches" = lib.mkOverride 100 524288;
+{
+  lib,
+  pkgs,
+  ...
+}: {
+  boot = {
+    kernel.sysctl = {
+      # Improved file monitoring
+      "fs.inotify.max_user_instances" = lib.mkOverride 100 8192; # Re-use the default from Bazzite even though the default NixOS value is higher.
+      # "fs.inotify.max_user_watches" = lib.mkOverride 100 524288;
 
-    # Disable watchdogs for maximum performance at the cost of resiliency
-    "kernel.nmi_watchdog" = lib.mkOverride 100 0;
-    "kernel.soft_watchdog" = lib.mkDefault 0;
-    # "kernel.split_lock_mitigate" = lib.mkOverride 100 0;
-    "kernel.watchdog" = lib.mkDefault 0;
+      # Disable watchdogs for maximum performance at the cost of resiliency
+      "kernel.nmi_watchdog" = lib.mkOverride 100 0;
+      "kernel.soft_watchdog" = lib.mkDefault 0;
+      # "kernel.split_lock_mitigate" = lib.mkOverride 100 0;
+      "kernel.watchdog" = lib.mkDefault 0;
 
-    "kernel.sched_cfs_bandwidth_slice_u" = lib.mkDefault 3000;
-    "kernel.sched_latency_ns" = lib.mkDefault 3000000;
-    "kernel.sched_min_granularity_ns" = lib.mkDefault 300000;
-    "kernel.sched_wakeup_granularity_ns" = lib.mkDefault 500000;
-    "kernel.sched_migration_cost_ns" = lib.mkDefault 50000;
-    "kernel.sched_nr_migrate" = lib.mkDefault 128;
-    "kernel.split_lock_mitigate" = lib.mkDefault 0;
+      "kernel.sched_cfs_bandwidth_slice_u" = lib.mkDefault 3000;
+      "kernel.sched_latency_ns" = lib.mkDefault 3000000;
+      "kernel.sched_min_granularity_ns" = lib.mkDefault 300000;
+      "kernel.sched_wakeup_granularity_ns" = lib.mkDefault 500000;
+      "kernel.sched_migration_cost_ns" = lib.mkDefault 50000;
+      "kernel.sched_nr_migrate" = lib.mkDefault 128;
+      "kernel.split_lock_mitigate" = lib.mkDefault 0;
 
-    # Network optimizations
-    "net.core.default_qdisc" = lib.mkDefault "fq";
-    "net.ipv4.tcp_congestion_control" = lib.mkDefault "bbr";
-    "net.ipv4.tcp_fin_timeout" = lib.mkDefault 5;
-    "net.ipv4.tcp_mtu_probing" = lib.mkForce 1;
+      # Network optimizations
+      "net.core.default_qdisc" = lib.mkDefault "fq";
+      "net.ipv4.tcp_congestion_control" = lib.mkDefault "bbr";
+      "net.ipv4.tcp_fin_timeout" = lib.mkDefault 5;
+      "net.ipv4.tcp_mtu_probing" = lib.mkForce 1;
 
-    # Memory management
-    "vm.dirty_background_bytes" = lib.mkDefault 134217728;
-    "vm.dirty_bytes" = lib.mkDefault 268435456;
-    # "vm.max_map_count" = lib.mkOverride 100 2147483642;
-    "vm.page-cluster" = lib.mkDefault 0;
-    "vm.swappiness" = lib.mkDefault 180;
-    "vm.watermark_boost_factor" = lib.mkDefault 0;
-    "vm.watermark_scale_factor" = lib.mkDefault 125;
+      # Memory management
+      "vm.dirty_background_bytes" = lib.mkDefault 134217728;
+      "vm.dirty_bytes" = lib.mkDefault 268435456;
+      # "vm.max_map_count" = lib.mkOverride 100 2147483642;
+      "vm.page-cluster" = lib.mkDefault 0;
+      "vm.swappiness" = lib.mkDefault 180;
+      "vm.watermark_boost_factor" = lib.mkDefault 0;
+      "vm.watermark_scale_factor" = lib.mkDefault 125;
+    };
+
+    kernelPackages = pkgs.linuxPackages_zen;
   };
 
   services = {