drivers/misc/pvpanic/pvpanic.c

File Facts

System

Linux kernel

Corpus path

drivers/misc/pvpanic/pvpanic.c

Extension

.c

Size

5293 bytes

Lines

233

Domain

Driver Families

Bucket

drivers/misc

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.
• 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/device.h
• linux/errno.h
• linux/gfp_types.h
• linux/io.h
• linux/kexec.h
• linux/kstrtox.h
• linux/limits.h
• linux/list.h
• linux/mod_devicetable.h
• linux/module.h
• linux/panic_notifier.h
• linux/platform_device.h
• linux/reboot.h
• linux/spinlock.h
• linux/sysfs.h
• linux/types.h
• uapi/misc/pvpanic.h
• pvpanic.h

Detected Declarations

• struct pvpanic_instance
• function pvpanic_send_event
• function list_for_each_entry
• function pvpanic_panic_notify
• function pvpanic_sys_off
• function pvpanic_synchronize_sys_off_handler
• function pvpanic_remove
• function capability_show
• function events_show
• function events_store
• function devm_pvpanic_probe
• function pvpanic_init
• function pvpanic_exit
• module init pvpanic_init
• export pvpanic_dev_groups
• export devm_pvpanic_probe

Annotated Snippet

module_init(pvpanic_init);

static void pvpanic_exit(void)
{
	atomic_notifier_chain_unregister(&panic_notifier_list, &pvpanic_panic_nb);

}
module_exit(pvpanic_exit);

Annotation

• Immediate include surface: `linux/device.h`, `linux/errno.h`, `linux/gfp_types.h`, `linux/io.h`, `linux/kexec.h`, `linux/kstrtox.h`, `linux/limits.h`, `linux/list.h`.
• Detected declarations: `struct pvpanic_instance`, `function pvpanic_send_event`, `function list_for_each_entry`, `function pvpanic_panic_notify`, `function pvpanic_sys_off`, `function pvpanic_synchronize_sys_off_handler`, `function pvpanic_remove`, `function capability_show`, `function events_show`, `function events_store`.
• Atlas domain: Driver Families / drivers/misc.
• 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.