drivers/xen/xen-acpi-pad.c

File Facts

System

Linux kernel

Corpus path

drivers/xen/xen-acpi-pad.c

Extension

.c

Size

3883 bytes

Lines

168

Domain

Driver Families

Bucket

drivers/xen

Inferred role

Driver Families: exported/initcall integration point

Status

integration implementation candidate

Why This File Exists

Repeatable hardware-adapter layer. Deep compatibility for every driver is out of scope; this atlas records patterns, probe lifecycles, bus glue, IRQ/DMA usage, and links back to core abstractions.

• Repeatable hardware-adapter layer. Deep compatibility for every driver is out of scope; this atlas records patterns, probe lifecycles, bus glue, IRQ/DMA usage, and links back to core abstractions.
• Exports symbols or registers init work; inspect boot/module ordering and who consumes the exported contract.
• 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/kernel.h
• linux/types.h
• linux/acpi.h
• linux/platform_device.h
• xen/xen.h
• xen/interface/version.h
• xen/xen-ops.h
• asm/xen/hypercall.h

Detected Declarations

• function xen_acpi_pad_idle_cpus
• function xen_acpi_pad_idle_cpus_num
• function acpi_pad_pur
• function acpi_pad_handle_notify
• function acpi_pad_notify
• function acpi_pad_probe
• function acpi_pad_remove
• function xen_acpi_pad_init
• module init xen_acpi_pad_init

Annotated Snippet

subsys_initcall(xen_acpi_pad_init);

Annotation

• Immediate include surface: `linux/kernel.h`, `linux/types.h`, `linux/acpi.h`, `linux/platform_device.h`, `xen/xen.h`, `xen/interface/version.h`, `xen/xen-ops.h`, `asm/xen/hypercall.h`.
• Detected declarations: `function xen_acpi_pad_idle_cpus`, `function xen_acpi_pad_idle_cpus_num`, `function acpi_pad_pur`, `function acpi_pad_handle_notify`, `function acpi_pad_notify`, `function acpi_pad_probe`, `function acpi_pad_remove`, `function xen_acpi_pad_init`, `module init xen_acpi_pad_init`.
• Atlas domain: Driver Families / drivers/xen.
• Implementation status: integration 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.