drivers/s390/char/sclp_sd.c

File Facts

System

Linux kernel

Corpus path

drivers/s390/char/sclp_sd.c

Extension

.c

Size

14647 bytes

Lines

591

Domain

Driver Families

Bucket

drivers/s390

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/completion.h
• linux/jiffies.h
• linux/kobject.h
• linux/list.h
• linux/printk.h
• linux/slab.h
• linux/vmalloc.h
• linux/async.h
• linux/mutex.h
• linux/pgalloc.h
• sclp.h

Detected Declarations

• struct sclp_sd_evbuf
• struct sclp_sd_sccb
• struct sclp_sd_data
• struct sclp_sd_listener
• struct sclp_sd_file
• function sclp_sd_listener_add
• function sclp_sd_listener_remove
• function sclp_sd_listener_init
• function sclp_sd_receiver
• function sclp_sd_sync
• function sclp_sd_store_data
• function sclp_sd_data_reset
• function sclp_sd_file_release
• function sclp_sd_file_update
• function sclp_sd_file_update_async
• function reload_store
• function data_read
• function sclp_sd_file_create
• function sclp_sd_init
• module init sclp_sd_init

Annotated Snippet

device_initcall(sclp_sd_init);

Annotation

• Immediate include surface: `linux/completion.h`, `linux/jiffies.h`, `linux/kobject.h`, `linux/list.h`, `linux/printk.h`, `linux/slab.h`, `linux/vmalloc.h`, `linux/async.h`.
• Detected declarations: `struct sclp_sd_evbuf`, `struct sclp_sd_sccb`, `struct sclp_sd_data`, `struct sclp_sd_listener`, `struct sclp_sd_file`, `function sclp_sd_listener_add`, `function sclp_sd_listener_remove`, `function sclp_sd_listener_init`, `function sclp_sd_receiver`, `function sclp_sd_sync`.
• Atlas domain: Driver Families / drivers/s390.
• 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.