drivers/firmware/efi/efi-pstore.c

File Facts

System

Linux kernel

Corpus path

drivers/firmware/efi/efi-pstore.c

Extension

.c

Size

7715 bytes

Lines

307

Domain

Driver Families

Bucket

drivers/firmware

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.
• 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/efi.h
• linux/module.h
• linux/pstore.h
• linux/slab.h
• linux/ucs2_string.h

Detected Declarations

• function efi_pstore_disable_set
• function efi_pstore_open
• function efi_pstore_close
• function generic_id
• function efi_pstore_read_func
• function efi_pstore_read
• function efi_pstore_write
• function efi_pstore_erase
• function efivars_pstore_init
• function efivars_pstore_exit
• module init efivars_pstore_init

Annotated Snippet

module_init(efivars_pstore_init);
module_exit(efivars_pstore_exit);

MODULE_DESCRIPTION("EFI variable backend for pstore");
MODULE_LICENSE("GPL");
MODULE_ALIAS("platform:efivars");

Annotation

• Immediate include surface: `linux/efi.h`, `linux/module.h`, `linux/pstore.h`, `linux/slab.h`, `linux/ucs2_string.h`.
• Detected declarations: `function efi_pstore_disable_set`, `function efi_pstore_open`, `function efi_pstore_close`, `function generic_id`, `function efi_pstore_read_func`, `function efi_pstore_read`, `function efi_pstore_write`, `function efi_pstore_erase`, `function efivars_pstore_init`, `function efivars_pstore_exit`.
• Atlas domain: Driver Families / drivers/firmware.
• 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.