drivers/gpu/drm/i915/gem/selftests/mock_dmabuf.h

File Facts

System

Linux kernel

Corpus path

drivers/gpu/drm/i915/gem/selftests/mock_dmabuf.h

Extension

.h

Size

343 bytes

Lines

23

Domain

Driver Families

Bucket

drivers/gpu

Inferred role

Driver Families: implementation source

Status

source 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.
• Defines or uses C structs; map object ownership, embedded links, reference counts, and lock ownership.

Dependency Surface

• linux/dma-buf.h

Detected Declarations

• struct mock_dmabuf

Annotated Snippet

struct mock_dmabuf {
	int npages;
	struct page *pages[];
};

static inline struct mock_dmabuf *to_mock(struct dma_buf *buf)
{
	return buf->priv;
}

#endif /* !__MOCK_DMABUF_H__ */

Annotation

• Immediate include surface: `linux/dma-buf.h`.
• Detected declarations: `struct mock_dmabuf`.
• Atlas domain: Driver Families / drivers/gpu.
• Implementation status: source 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.