talexander/machine_setup
1
0
Fork 0
Code Issues Pull Requests Releases Activity

Update to Linux 7.2.

Browse Source 
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
Download Patch File Download Diff File Expand all files Collapse all files

35
nix/configuration/roles/kernel/default.nix
View File

@@ -14,30 +14,12 @@ let
full = { full = {
PREEMPT_DYNAMIC = yes; PREEMPT_DYNAMIC = yes;
PREEMPT = yes; PREEMPT = yes;
PREEMPT_VOLUNTARY = lib.mkForce no;
PREEMPT_LAZY = lib.mkForce no; PREEMPT_LAZY = lib.mkForce no;
PREEMPT_NONE = no;
}; };
lazy = { lazy = {
PREEMPT_DYNAMIC = yes; PREEMPT_DYNAMIC = yes;
PREEMPT = no; PREEMPT = no;
PREEMPT_VOLUNTARY = lib.mkForce no;
PREEMPT_LAZY = yes; 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 = tick_hz =
@@ -99,16 +81,14 @@ let
TRANSPARENT_HUGEPAGE_MADVISE = yes; TRANSPARENT_HUGEPAGE_MADVISE = yes;
}; };
}; };
common_config = common_config = with lib.kernel; {
with lib.kernel; # Google's BBRv3 TCP congestion Control
{ TCP_CONG_BBR = yes;
# Google's BBRv3 TCP congestion Control DEFAULT_BBR = yes;
TCP_CONG_BBR = yes; };
DEFAULT_BBR = yes;
};
flavors = { flavors = {
server = lib.mkMerge [ server = lib.mkMerge [
preemption_type.none preemption_type.lazy
tick_hz."300" tick_hz."300"
performance_governor.default performance_governor.default
tick_rate.tickless tick_rate.tickless
@@ -142,7 +122,8 @@ in
kernel.version = lib.mkOption { kernel.version = lib.mkOption {
type = lib.types.str; type = lib.types.str;
default = "linux"; # LTS # default = "linux"; # LTS
default = "linux_7_2"; # LTS
example = "linux_6_18"; example = "linux_6_18";
description = "What version of the kernl should we use."; description = "What version of the kernl should we use.";
}; };