drivers/pci/hotplug/pci_hotplug_core.c

File Facts

System

Linux kernel

Corpus path

drivers/pci/hotplug/pci_hotplug_core.c

Extension

.c

Size

15466 bytes

Lines

580

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.
• Defines or uses C structs; map object ownership, embedded links, reference counts, and lock ownership.

Dependency Surface

• linux/module.h
• linux/moduleparam.h
• linux/kernel.h
• linux/types.h
• linux/kobject.h
• linux/sysfs.h
• linux/init.h
• linux/pci.h
• linux/pci_hotplug.h
• ../pci.h
• cpci_hotplug.h

Detected Declarations

• function power_read_file
• function power_write_file
• function attention_read_file
• function attention_write_file
• function latch_read_file
• function presence_read_file
• function test_write_file
• function has_power_file
• function has_attention_file
• function has_latch_file
• function has_adapter_file
• function has_test_file
• function fs_add_slot
• function fs_remove_slot
• function pci_hp_initialize
• function __pci_hp_initialize
• function pci_hp_add
• function pci_hp_register
• function pci_hp_del
• function hotplug_slot_name
• function pci_hp_unignore_link_change
• function pci_hp_unignore_link_change
• function pci_hp_spurious_link_change
• function pci_hotplug_init
• module init pci_hotplug_init
• export __pci_hp_register
• export __pci_hp_initialize
• export pci_hp_add
• export pci_hp_deregister
• export pci_hp_del
• export pci_hp_destroy

Annotated Snippet

device_initcall(pci_hotplug_init);

/*
 * not really modular, but the easiest way to keep compat with existing
 * bootargs behaviour is to continue using module_param here.
 */
module_param(debug, bool, 0644);
MODULE_PARM_DESC(debug, "Debugging mode enabled or not");

Annotation

• Immediate include surface: `linux/module.h`, `linux/moduleparam.h`, `linux/kernel.h`, `linux/types.h`, `linux/kobject.h`, `linux/sysfs.h`, `linux/init.h`, `linux/pci.h`.
• Detected declarations: `function power_read_file`, `function power_write_file`, `function attention_read_file`, `function attention_write_file`, `function latch_read_file`, `function presence_read_file`, `function test_write_file`, `function has_power_file`, `function has_attention_file`, `function has_latch_file`.
• Atlas domain: Representative Device Path / PCIe NVMe Storage Path.
• 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.