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| author | Christian Breunig <christian@breunig.cc> | 2024-03-05 20:23:14 +0100 |
|---|---|---|
| committer | Christian Breunig <christian@breunig.cc> | 2024-03-05 20:23:14 +0100 |
| commit | 3a3e0dff4ff1f80835eca6b2362d792e3ecacc8e (patch) | |
| tree | b5afd57d538a627ff91d76180fa5b78077aa40c0 | |
| parent | 450bb16795305e32e46b21da4bb5913843d9d871 (diff) | |
| download | vyos-1x-3a3e0dff4ff1f80835eca6b2362d792e3ecacc8e.tar.gz vyos-1x-3a3e0dff4ff1f80835eca6b2362d792e3ecacc8e.zip | |
T2447: add configurable kernel boot option 'disable-power-saving'
Lower available CPU C states to a minimum if this option set. This will set
Kernel commandline options "intel_idle.max_cstate=0 processor.max_cstate=1".
| -rw-r--r-- | interface-definitions/system_option.xml.in | 6 | ||||
| -rwxr-xr-x | src/conf_mode/system_option.py | 2 |
2 files changed, 8 insertions, 0 deletions
diff --git a/interface-definitions/system_option.xml.in b/interface-definitions/system_option.xml.in index 602d7d100..fe517d17d 100644 --- a/interface-definitions/system_option.xml.in +++ b/interface-definitions/system_option.xml.in @@ -43,6 +43,12 @@ <valueless/> </properties> </leafNode> + <leafNode name="disable-power-saving"> + <properties> + <help>Disable CPU power saving mechanisms also known as C states</help> + <valueless/> + </properties> + </leafNode> </children> </node> <leafNode name="keyboard-layout"> diff --git a/src/conf_mode/system_option.py b/src/conf_mode/system_option.py index 3b5b67437..7ed451e16 100755 --- a/src/conf_mode/system_option.py +++ b/src/conf_mode/system_option.py @@ -92,6 +92,8 @@ def generate(options): if 'kernel' in options: if 'disable_mitigations' in options['kernel']: cmdline_options.append('mitigations=off') + if 'disable_power_saving' in options['kernel']: + cmdline_options.append('intel_idle.max_cstate=0 processor.max_cstate=1') grub_util.update_kernel_cmdline_options(' '.join(cmdline_options)) return None |