arch/x86/include/asm/qspinlock.h

File Facts

System

Linux kernel

Corpus path

arch/x86/include/asm/qspinlock.h

Extension

.h

Size

1054 bytes

Lines

40

Domain

Architecture Layer

Bucket

arch/x86

Inferred role

Architecture Layer: implementation source

Status

source implementation candidate

Why This File Exists

CPU and platform-specific kernel glue: boot entry, traps, syscall entry, interrupts, page tables, context switch, and low-level barriers.

• CPU and platform-specific kernel glue: boot entry, traps, syscall entry, interrupts, page tables, context switch, and low-level barriers.
• Uses kernel synchronization; read lock ordering, sleepability, and interrupt context assumptions before translating.
• Defines or uses C structs; map object ownership, embedded links, reference counts, and lock ownership.

Dependency Surface

• linux/jump_label.h
• asm/cpufeature.h
• asm-generic/qspinlock_types.h
• asm/paravirt.h
• asm/rmwcc.h
• asm/paravirt-spinlock.h
• asm-generic/qspinlock.h

Detected Declarations

• function queued_fetch_set_pending_acquire
• function native_pv_lock_init

Annotated Snippet

static inline void native_pv_lock_init(void) { }
#endif

#include <asm-generic/qspinlock.h>

#endif /* _ASM_X86_QSPINLOCK_H */

Annotation

• Immediate include surface: `linux/jump_label.h`, `asm/cpufeature.h`, `asm-generic/qspinlock_types.h`, `asm/paravirt.h`, `asm/rmwcc.h`, `asm/paravirt-spinlock.h`, `asm-generic/qspinlock.h`.
• Detected declarations: `function queued_fetch_set_pending_acquire`, `function native_pv_lock_init`.
• Atlas domain: Architecture Layer / arch/x86.
• Implementation status: source implementation candidate.
• Synchronization appears in or near this file; preserve lock ordering, sleepability, and interrupt-context constraints.

Implementation Notes

• This generated page is the file-by-file coverage layer; curated subsystem chapters should link here when they synthesize a multi-file control flow.
• Core OS pages should be promoted from atlas-only to deep-reviewed when they explain data structures, invariants, locking, lifecycle, and C implementation snippets.
• Driver-family pages are intentionally pattern-oriented unless they are part of the selected PCIe/NVMe representative device path.