GKaszewski/k-os
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perf(kernel): kernel static all-zero -> .bss (image 812K -> 173K): domain::Slot (repr(u8) Empty=0) for tables, zero generation counters, core ids by position, pool/platform installed at boot; Option-backed Slot under kani (cbmc speed); build fails if .data > 16K

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This commit is contained in:
Gabriel Kaszewski
2026-10-28 13:01:52 +01:00
parent 419b715a1f
commit a2d4a7d085
24 changed files with 320 additions and 116 deletions
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16
crates/domain/src/scheduler/multi_core.rs
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@@ -22,17 +22,9 @@ pub struct MultiCoreScheduler {
impl MultiCoreScheduler {
pub const fn new(num_cores: u8) -> Self {
let mut cores = [const { PerCoreScheduler::new(CoreId::from_raw(0)) }; MAX_CORES];
// Each core numbered by its place (a const fn cannot index or map).
let mut rest: &mut [PerCoreScheduler] = &mut cores;
let mut id = 0u8;
while let Some((core, tail)) = rest.split_first_mut() {
*core = PerCoreScheduler::new(CoreId::from_raw(id));
rest = tail;
id += 1;
}
// A core is numbered by its place in `cores`.
Self {
cores,
cores: [const { PerCoreScheduler::new() }; MAX_CORES],
num_cores: if num_cores < MAX_CORES as u8 {
num_cores
} else {
@@ -78,8 +70,8 @@ impl MultiCoreScheduler {
pub fn queued_on(&self, thread: ThreadId) -> Option<CoreId> {
self.active()
.iter()
.find(|c| c.is_queued(thread))
.map(|c| c.core())
.position(|c| c.is_queued(thread))
.map(|i| CoreId::from_raw(i as u8))
}
/// Whether `thread` waits in some core's run queue.