samples/kfifo/dma-example.c

File Facts

System

Linux kernel

Corpus path

samples/kfifo/dma-example.c

Extension

.c

Size

3584 bytes

Lines

145

Domain

Support Tooling And Documentation

Bucket

samples

Inferred role

Support Tooling And Documentation: exported/initcall integration point

Status

integration implementation candidate

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.
• Exports symbols or registers init work; inspect boot/module ordering and who consumes the exported contract.
• Defines or uses C structs; map object ownership, embedded links, reference counts, and lock ownership.

Dependency Surface

• linux/init.h
• linux/kfifo.h
• linux/module.h
• linux/scatterlist.h
• linux/dma-mapping.h

Detected Declarations

• function example_init
• function example_exit
• module init example_init

Annotated Snippet

module_init(example_init);
module_exit(example_exit);
MODULE_DESCRIPTION("Sample fifo dma implementation");
MODULE_LICENSE("GPL");
MODULE_AUTHOR("Stefani Seibold <stefani@seibold.net>");

Annotation

• Immediate include surface: `linux/init.h`, `linux/kfifo.h`, `linux/module.h`, `linux/scatterlist.h`, `linux/dma-mapping.h`.
• Detected declarations: `function example_init`, `function example_exit`, `module init example_init`.
• Atlas domain: Support Tooling And Documentation / samples.
• Implementation status: integration implementation candidate.

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.