drivers/pci/hotplug/rpadlpar_core.c

File Facts

System

Linux kernel

Corpus path

drivers/pci/hotplug/rpadlpar_core.c

Extension

.c

Size

10284 bytes

Lines

483

Domain

Representative Device Path

Bucket

PCIe NVMe Storage Path

Inferred role

Representative Device Path: exported/initcall integration point

Status

integration implementation candidate

Why This File Exists

Part of the selected hardware vertical slice: PCI discovery, driver binding, NVMe queues, block requests, DMA, interrupts, and completion.

• Part of the selected hardware vertical slice: PCI discovery, driver binding, NVMe queues, block requests, DMA, interrupts, and completion.
• 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.
• Allocates kernel memory; connect allocation flags and lifetime to context constraints.
• Defines or uses C structs; map object ownership, embedded links, reference counts, and lock ownership.

Dependency Surface

• linux/init.h
• linux/module.h
• linux/of.h
• linux/pci.h
• linux/string.h
• linux/vmalloc.h
• asm/pci-bridge.h
• linux/mutex.h
• asm/rtas.h
• asm/vio.h
• linux/firmware.h
• ../pci.h
• rpaphp.h
• rpadlpar.h

Detected Declarations

• function for_each_child_of_node
• function for_each_node_by_name
• function list_for_each_entry_safe
• function list_for_each_entry
• function dlpar_pci_add_bus
• function dlpar_add_pci_slot
• function dlpar_remove_phb
• function dlpar_add_phb
• function dlpar_add_vio_slot
• function dlpar_add_slot
• function dlpar_remove_vio_slot
• function dlpar_remove_pci_slot
• function dlpar_remove_slot
• function is_dlpar_capable
• function rpadlpar_io_init
• function rpadlpar_io_exit
• module init rpadlpar_io_init

Annotated Snippet

module_init(rpadlpar_io_init);
module_exit(rpadlpar_io_exit);
MODULE_LICENSE("GPL");
MODULE_DESCRIPTION("RPA Dynamic Logical Partitioning driver for I/O slots");

Annotation

• Immediate include surface: `linux/init.h`, `linux/module.h`, `linux/of.h`, `linux/pci.h`, `linux/string.h`, `linux/vmalloc.h`, `asm/pci-bridge.h`, `linux/mutex.h`.
• Detected declarations: `function for_each_child_of_node`, `function for_each_node_by_name`, `function list_for_each_entry_safe`, `function list_for_each_entry`, `function dlpar_pci_add_bus`, `function dlpar_add_pci_slot`, `function dlpar_remove_phb`, `function dlpar_add_phb`, `function dlpar_add_vio_slot`, `function dlpar_add_slot`.
• Atlas domain: Representative Device Path / PCIe NVMe Storage Path.
• 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.