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cpu: reduce allocations for EPP values

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NotAShelf 2025-05-16 05:10:01 +03:00
parent 5b347eb3e2
commit d0cc9e4fb3
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1 changed files with 13 additions and 10 deletions
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23
src/cpu.rs
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@ -15,6 +15,17 @@ const VALID_EPB_STRINGS: &[&str] = &[
"power",
];
// EPP (Energy Performance Preference) string values
const EPP_FALLBACK_VALUES: &[&str] = &[
"default",
"performance",
"balance-performance",
"balance_performance", // alternative form with underscore
"balance-power",
"balance_power", // alternative form with underscore
"power",
];
// Write a value to a sysfs file
fn write_sysfs_value(path: impl AsRef<Path>, value: &str) -> Result<()> {
let p = path.as_ref();
@ -288,17 +299,9 @@ fn get_available_epp_values() -> Result<Vec<String>> {
if !Path::new(path).exists() {
// If the file doesn't exist, fall back to a default set of common values
// This is safer than failing outright, as some systems may allow these values
// This is safer than failing outright, as some systems may allow these values │
// even without explicitly listing them
return Ok(vec![
"default".to_string(),
"performance".to_string(),
"balance_performance".to_string(),
"balance_performance".replace('_', "-"),
"balance_power".to_string(),
"balance_power".replace('_', "-"),
"power".to_string(),
]);
return Ok(EPP_FALLBACK_VALUES.iter().map(|&s| s.to_string()).collect());
}
let content = fs::read_to_string(path).map_err(|e| {