Documentation/ABI/testing/sysfs-devices-sun

Source file repositories/reference/linux-study-clean/Documentation/ABI/testing/sysfs-devices-sun

File Facts

System: Linux kernel
Corpus path: Documentation/ABI/testing/sysfs-devices-sun
Extension: [no extension]
Size: 600 bytes
Lines: 15
Domain: Support Tooling And Documentation
Bucket: Documentation
Inferred role: Support Tooling And Documentation: Documentation
Status: atlas-only

Why This File Exists

Repository support layer: documentation, build tooling, samples, user-space helper tools, generated initramfs support, licenses, and validation utilities.

Repository support layer: documentation, build tooling, samples, user-space helper tools, generated initramfs support, licenses, and validation utilities.

Dependency Surface

No C-style include directives detected by the generator.

Detected Declarations

No top-level syscall, struct, function, initcall, or export declaration detected by the generator.

Annotated Snippet

What:		/sys/devices/.../sun
Date:		October 2012
Contact:	Yasuaki Ishimatsu <isimatu.yasuaki@jp.fujitsu.com>
Description:
		The file contains a Slot-unique ID which provided by the _SUN
		method in the ACPI namespace. The value is written in Advanced
		Configuration and Power Interface Specification as follows:

		"The _SUN value is required to be unique among the slots of
		the same type. It is also recommended that this number match
		the slot number printed on the physical slot whenever possible."

		So reading the sysfs file, we can identify a physical position
		of the slot in the system.

Annotation

Atlas domain: Support Tooling And Documentation / Documentation.
Implementation status: atlas-only.

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.