vasilito
cee25393d8
- Fix P15-8-init-cycle-detection.patch: replace visiting+error with seen+silent-skip to eliminate 11 false-positive 'dependency cycle detected' errors on shared deps - Fix P0-daemon-fix-init-notify-unwrap.patch: remove eprintln! for missing INIT_NOTIFY (expected for oneshot_async services, ~7 daemons affected) - Fix driver-manager hotplug loop: add PERMANENTLY_SKIPPED static set shared between hotplug handler and DriverConfig::probe() to stop infinite re-probing of Fatal/NotSupported/deferred-exhausted device+driver pairs (e.g. ided) - Fix driver-manager log_timeline: suppress repeated EPIPE/ENOENT errors with AtomicI32 dedup and AtomicBool one-shot guards for boot timeline JSON - Add driver-manager SIGTERM handler, ACPI bus registration, --status mode, driver reap loop, graceful shutdown, and reduced deferred retries (30→3)
53 lines
2.0 KiB
Diff
53 lines
2.0 KiB
Diff
diff --git a/src/percpu.rs b/src/percpu.rs
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index f4ad5e66..80ffb959 100644
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--- a/src/percpu.rs
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+++ b/src/percpu.rs
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@@ -4,6 +4,7 @@ use alloc::{
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};
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use core::{
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cell::{Cell, RefCell},
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+ hint,
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sync::atomic::{AtomicBool, AtomicPtr, Ordering},
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};
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@@ -104,11 +105,36 @@ pub fn shootdown_tlb_ipi(target: Option<LogicalCpuId>) {
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crate::ipi::ipi_single(crate::ipi::IpiKind::Tlb, percpublock);
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} else {
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+ // Broadcast TLB shootdown: set flag on all other CPUs, then send a single
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+ // IPI with "all except self" destination shorthand instead of N individual IPIs.
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+ let my_percpublock = PercpuBlock::current();
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for id in 0..crate::cpu_count() {
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- // TODO: Optimize: use global counter and percpu ack counters, send IPI using
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- // destination shorthand "all CPUs".
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- shootdown_tlb_ipi(Some(LogicalCpuId::new(id)));
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+ let target_id = LogicalCpuId::new(id);
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+ if target_id == my_percpublock.cpu_id {
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+ continue;
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+ }
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+ let Some(percpublock) = (unsafe {
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+ ALL_PERCPU_BLOCKS[id as usize]
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+ .load(Ordering::Acquire)
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+ .as_ref()
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+ }) else {
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+ continue;
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+ };
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+ // Wait if this CPU still has a pending shootdown from a previous request
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+ #[expect(clippy::bool_comparison)]
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+ while percpublock
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+ .wants_tlb_shootdown
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+ .swap(true, Ordering::Release)
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+ == true
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+ {
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+ while percpublock.wants_tlb_shootdown.load(Ordering::Relaxed) == true {
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+ my_percpublock.maybe_handle_tlb_shootdown();
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+ hint::spin_loop();
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+ }
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+ }
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}
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+ // Single broadcast IPI to all other CPUs using destination shorthand
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+ crate::ipi::ipi(crate::ipi::IpiKind::Tlb, crate::ipi::IpiTarget::Other);
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}
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}
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impl PercpuBlock {
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