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)
32 lines
1.3 KiB
Diff
32 lines
1.3 KiB
Diff
--- a/src/percpu.rs
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+++ b/src/percpu.rs
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@@ -21,7 +21,7 @@
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cpu_set::{LogicalCpuId, MAX_CPU_COUNT},
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cpu_stats::{CpuStats, CpuStatsData},
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ptrace::Session,
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- sync::{mcs::McsNode, CleanLockToken},
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+ sync::{mcs::McsNode, mcs::McsRawLock, CleanLockToken},
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syscall::debug::SyscallDebugInfo,
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};
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@@ -66,6 +66,11 @@
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/// `u8::MAX` means unknown (no SRAT or APIC ID not listed).
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pub numa_node: Cell<u8>,
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+ /// Pointer to the MCS lock this CPU is currently spinning on (for transitive PI).
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+ /// `null` when not waiting on any lock. Set in McsRawLock::acquire() before
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+ /// entering the spin loop, cleared upon acquisition.
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+ pub waiting_on_lock: AtomicPtr<McsRawLock>,
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+
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// TODO: Put mailbox queues here, e.g. for TLB shootdown? Just be sure to 128-byte align it
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// first to avoid cache invalidation.
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pub profiling: Option<&'static crate::profiling::RingBuffer>,
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@@ -360,6 +365,7 @@
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pi_donated_prio: AtomicU32::new(u32::MAX),
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current_prio: Cell::new(39),
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numa_node: Cell::new(u8::MAX),
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+ waiting_on_lock: AtomicPtr::new(core::ptr::null_mut()),
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ptrace_flags: Cell::new(PtraceFlags::empty()),
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ptrace_session: RefCell::new(None),
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inside_syscall: Cell::new(false),
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