drivers/acpi/apei/erst.c

File Facts

System

Linux kernel

Corpus path

drivers/acpi/apei/erst.c

Extension

.c

Size

30772 bytes

Lines

1301

Domain

Driver Families

Bucket

drivers/acpi

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/kernel.h
• linux/module.h
• linux/init.h
• linux/delay.h
• linux/io.h
• linux/acpi.h
• linux/uaccess.h
• linux/cper.h
• linux/nmi.h
• linux/hardirq.h
• linux/pstore.h
• linux/vmalloc.h
• linux/mm.h
• acpi/apei.h
• apei-internal.h

Detected Declarations

• struct erst_record_id_cache
• struct cper_pstore_record
• function erst_errno
• function erst_get_timeout
• function erst_timedout
• function erst_exec_load_var1
• function erst_exec_load_var2
• function erst_exec_store_var1
• function erst_exec_add
• function erst_exec_subtract
• function erst_exec_add_value
• function erst_exec_subtract_value
• function erst_exec_stall
• function erst_exec_stall_while_true
• function erst_exec_skip_next_instruction_if_true
• function erst_exec_goto
• function erst_exec_set_src_address_base
• function erst_exec_set_dst_address_base
• function erst_exec_move_data
• function erst_exec_ctx_init
• function erst_get_erange
• function __erst_get_record_count
• function erst_get_record_count
• function __erst_get_next_record_id
• function erst_get_record_id_begin
• function __erst_record_id_cache_add_one
• function erst_get_record_id_next
• function __erst_record_id_cache_compact
• function erst_get_record_id_end
• function __erst_write_to_storage
• function __erst_read_from_storage
• function __erst_clear_from_storage
• function pr_unimpl_nvram
• function __erst_write_to_nvram
• function __erst_read_to_erange_from_nvram
• function __erst_clear_from_nvram
• function erst_write
• function __erst_read_to_erange
• function __erst_read
• function erst_read
• function erst_clear_cache
• function erst_read_record
• function erst_clear
• function setup_erst_disable
• function erst_check_table
• function erst_open_pstore
• function erst_close_pstore
• function erst_reader

Annotated Snippet

device_initcall(erst_init);

Annotation

• Immediate include surface: `linux/kernel.h`, `linux/module.h`, `linux/init.h`, `linux/delay.h`, `linux/io.h`, `linux/acpi.h`, `linux/uaccess.h`, `linux/cper.h`.
• Detected declarations: `struct erst_record_id_cache`, `struct cper_pstore_record`, `function erst_errno`, `function erst_get_timeout`, `function erst_timedout`, `function erst_exec_load_var1`, `function erst_exec_load_var2`, `function erst_exec_store_var1`, `function erst_exec_add`, `function erst_exec_subtract`.
• Atlas domain: Driver Families / drivers/acpi.
• 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.