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Update to Linux 7.2.

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This is to pull in the drivers for the mt7927 wireless chipset in my desktop. Normally, I would keep the rest of my machines on LTS but since Linux 7 significantly changed the kernel preemption, maintaining two configs would be more trouble than it is worth.
This commit is contained in:
Tom Alexander
2026-08-28 12:20:52 -04:00
parent 4eb7749967
commit 9bfa21368b
1 changed files with 8 additions and 27 deletions
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27
nix/configuration/roles/kernel/default.nix
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@@ -14,30 +14,12 @@ let
full = {
PREEMPT_DYNAMIC = yes;
PREEMPT = yes;
PREEMPT_VOLUNTARY = lib.mkForce no;
PREEMPT_LAZY = lib.mkForce no;
PREEMPT_NONE = no;
};
lazy = {
PREEMPT_DYNAMIC = yes;
PREEMPT = no;
PREEMPT_VOLUNTARY = lib.mkForce no;
PREEMPT_LAZY = yes;
PREEMPT_NONE = no;
};
voluntary = {
PREEMPT_DYNAMIC = no;
PREEMPT = no;
PREEMPT_VOLUNTARY = yes;
PREEMPT_LAZY = lib.mkForce no;
PREEMPT_NONE = no;
};
none = {
PREEMPT_DYNAMIC = no;
PREEMPT = no;
PREEMPT_VOLUNTARY = lib.mkForce no;
PREEMPT_LAZY = lib.mkForce no;
PREEMPT_NONE = yes;
};
};
tick_hz =
@@ -99,16 +81,14 @@ let
TRANSPARENT_HUGEPAGE_MADVISE = yes;
};
};
common_config =
with lib.kernel;
{
common_config = with lib.kernel; {
# Google's BBRv3 TCP congestion Control
TCP_CONG_BBR = yes;
DEFAULT_BBR = yes;
};
flavors = {
server = lib.mkMerge [
preemption_type.none
preemption_type.lazy
tick_hz."300"
performance_governor.default
tick_rate.tickless
@@ -142,7 +122,8 @@ in
kernel.version = lib.mkOption {
type = lib.types.str;
default = "linux"; # LTS
# default = "linux"; # LTS
default = "linux_7_2"; # LTS
example = "linux_6_18";
description = "What version of the kernl should we use.";
};