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set better governor hierarchy and add cli command to change (#2519)

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This commit is contained in:
Aiden McClelland
2023-11-15 12:17:10 -07:00
committed by GitHub
parent 5f3db8e567
commit a1495dd33d
6 changed files with 100 additions and 36 deletions
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24
core/startos/src/util/cpupower.rs
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@@ -7,10 +7,20 @@ use tokio::process::Command;
use crate::prelude::*;
use crate::util::Invoke;
pub const GOVERNOR_PERFORMANCE: Governor = Governor(Cow::Borrowed("performance"));
pub const GOVERNOR_HEIRARCHY: &[Governor] = &[
Governor(Cow::Borrowed("ondemand")),
Governor(Cow::Borrowed("schedutil")),
Governor(Cow::Borrowed("conservative")),
];
#[derive(Debug, Clone, PartialEq, Eq, PartialOrd, Ord)]
#[derive(Debug, Clone, PartialEq, Eq, PartialOrd, Ord, serde::Serialize, serde::Deserialize)]
pub struct Governor(Cow<'static, str>);
impl std::str::FromStr for Governor {
type Err = std::convert::Infallible;
fn from_str(s: &str) -> Result<Self, Self::Err> {
Ok(Self(s.to_owned().into()))
}
}
impl std::fmt::Display for Governor {
fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
self.0.fmt(f)
@@ -114,6 +124,16 @@ pub async fn current_governor() -> Result<Option<Governor>, Error> {
))
}
pub async fn get_preferred_governor() -> Result<Option<&'static Governor>, Error> {
let governors = get_available_governors().await?;
for governor in GOVERNOR_HEIRARCHY {
if governors.contains(governor) {
return Ok(Some(governor));
}
}
Ok(None)
}
pub async fn set_governor(governor: &Governor) -> Result<(), Error> {
Command::new("cpupower")
.arg("frequency-set")