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nixos/nvidia: make nvidia-frontend device major constant

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It is assigned by https://www.kernel.org/doc/Documentation/admin-guide/devices.txt
and never changes, so we can skip grep.
This commit is contained in:
Artem Leshchev 2022-04-28 13:52:07 +03:00
parent b01be47c87
commit 73261bdc59
1 changed files with 3 additions and 3 deletions
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6
nixos/modules/hardware/video/nvidia.nix
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@ -361,10 +361,10 @@ in
services.udev.extraRules =
''
# Create /dev/nvidia-uvm when the nvidia-uvm module is loaded.
KERNEL=="nvidia", RUN+="${pkgs.runtimeShell} -c 'mknod -m 666 /dev/nvidiactl c $$(grep nvidia-frontend /proc/devices | cut -d \ -f 1) 255'"
KERNEL=="nvidia_modeset", RUN+="${pkgs.runtimeShell} -c 'mknod -m 666 /dev/nvidia-modeset c $$(grep nvidia-frontend /proc/devices | cut -d \ -f 1) 254'"
KERNEL=="nvidia", RUN+="${pkgs.runtimeShell} -c 'mknod -m 666 /dev/nvidiactl c 195 255'"
KERNEL=="nvidia_modeset", RUN+="${pkgs.runtimeShell} -c 'mknod -m 666 /dev/nvidia-modeset c 195 254'"
KERNEL=="card*", SUBSYSTEM=="drm", DRIVERS=="nvidia", PROGRAM="${pkgs.gnugrep}/bin/grep 'Device Minor:' /proc/driver/nvidia/gpus/%b/information", \
RUN+="${pkgs.runtimeShell} -c 'mknod -m 666 /dev/nvidia%c{3} c $$(grep nvidia-frontend /proc/devices | cut -d \ -f 1) %c{3}"
RUN+="${pkgs.runtimeShell} -c 'mknod -m 666 /dev/nvidia%c{3} c 195 %c{3}"
KERNEL=="nvidia_uvm", RUN+="${pkgs.runtimeShell} -c 'mknod -m 666 /dev/nvidia-uvm c $$(grep nvidia-uvm /proc/devices | cut -d \ -f 1) 0'"
KERNEL=="nvidia_uvm", RUN+="${pkgs.runtimeShell} -c 'mknod -m 666 /dev/nvidia-uvm-tools c $$(grep nvidia-uvm /proc/devices | cut -d \ -f 1) 0'"
'' + optionalString cfg.powerManagement.finegrained ''