arch/arm64/kernel/mpam.c

File Facts

System

Linux kernel

Corpus path

arch/arm64/kernel/mpam.c

Extension

.c

Size

1558 bytes

Lines

63

Domain

Architecture Layer

Bucket

arch/arm64

Inferred role

Architecture Layer: exported/initcall integration point

Status

integration 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.
• Exports symbols or registers init work; inspect boot/module ordering and who consumes the exported contract.
• Defines or uses C structs; map object ownership, embedded links, reference counts, and lock ownership.

Dependency Surface

• asm/mpam.h
• linux/arm_mpam.h
• linux/cpu_pm.h
• linux/jump_label.h
• linux/percpu.h

Detected Declarations

• function mpam_pm_notifier
• function arm64_mpam_register_cpus

Annotated Snippet

/* Must occur before mpam_msc_driver_init() from subsys_initcall() */
arch_initcall(arm64_mpam_register_cpus)

Annotation

• Immediate include surface: `asm/mpam.h`, `linux/arm_mpam.h`, `linux/cpu_pm.h`, `linux/jump_label.h`, `linux/percpu.h`.
• Detected declarations: `function mpam_pm_notifier`, `function arm64_mpam_register_cpus`.
• Atlas domain: Architecture Layer / arch/arm64.
• Implementation status: integration implementation candidate.

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.