drivers/gpu/drm/i915/i915_syncmap.h

File Facts

System

Linux kernel

Corpus path

drivers/gpu/drm/i915/i915_syncmap.h

Extension

.h

Size

1618 bytes

Lines

39

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/types.h

Detected Declarations

• struct i915_syncmap

Annotated Snippet

#ifndef __I915_SYNCMAP_H__
#define __I915_SYNCMAP_H__

#include <linux/types.h>

struct i915_syncmap;
#define KSYNCMAP 16 /* radix of the tree, how many slots in each layer */

void i915_syncmap_init(struct i915_syncmap **root);
int i915_syncmap_set(struct i915_syncmap **root, u64 id, u32 seqno);
bool i915_syncmap_is_later(struct i915_syncmap **root, u64 id, u32 seqno);
void i915_syncmap_free(struct i915_syncmap **root);

#endif /* __I915_SYNCMAP_H__ */

Annotation

• Immediate include surface: `linux/types.h`.
• Detected declarations: `struct i915_syncmap`.
• 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.