Documentation/ABI/testing/sysfs-bus-dfl
Source file repositories/reference/linux-study-clean/Documentation/ABI/testing/sysfs-bus-dfl
File Facts
- System
- Linux kernel
- Corpus path
Documentation/ABI/testing/sysfs-bus-dfl- Extension
[no extension]- Size
- 479 bytes
- Lines
- 18
- 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/bus/dfl/devices/dfl_dev.X/type
Date: Aug 2020
KernelVersion: 5.10
Contact: Xu Yilun <yilun.xu@intel.com>
Description: Read-only. It returns type of DFL FIU of the device. Now DFL
supports 2 FIU types, 0 for FME, 1 for PORT.
Format: 0x%x
What: /sys/bus/dfl/devices/dfl_dev.X/feature_id
Date: Aug 2020
KernelVersion: 5.10
Contact: Xu Yilun <yilun.xu@intel.com>
Description: Read-only. It returns feature identifier local to its DFL FIU
type.
Format: 0x%xAnnotation
- 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.