drivers/md/dm-ps-service-time.c

File Facts

System

Linux kernel

Corpus path

drivers/md/dm-ps-service-time.c

Extension

.c

Size

9030 bytes

Lines

365

Domain

Driver Families

Bucket

drivers/md

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

• dm.h
• dm-path-selector.h
• linux/slab.h
• linux/module.h

Detected Declarations

• struct selector
• struct path_info
• function st_create
• function free_paths
• function list_for_each_entry_safe
• function st_destroy
• function st_status
• function st_add_path
• function st_fail_path
• function st_reinstate_path
• function st_compare_load
• function st_start_io
• function st_end_io
• function dm_st_init
• function dm_st_exit
• module init dm_st_init

Annotated Snippet

module_init(dm_st_init);
module_exit(dm_st_exit);

MODULE_DESCRIPTION(DM_NAME " throughput oriented path selector");
MODULE_AUTHOR("Kiyoshi Ueda <k-ueda@ct.jp.nec.com>");
MODULE_LICENSE("GPL");

Annotation

• Immediate include surface: `dm.h`, `dm-path-selector.h`, `linux/slab.h`, `linux/module.h`.
• Detected declarations: `struct selector`, `struct path_info`, `function st_create`, `function free_paths`, `function list_for_each_entry_safe`, `function st_destroy`, `function st_status`, `function st_add_path`, `function st_fail_path`, `function st_reinstate_path`.
• Atlas domain: Driver Families / drivers/md.
• 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.