drivers/gpu/drm/vgem/vgem_drv.h

File Facts

System

Linux kernel

Corpus path

drivers/gpu/drm/vgem/vgem_drv.h

Extension

.h

Size

1763 bytes

Lines

52

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

• drm/drm_gem.h
• drm/drm_cache.h
• uapi/drm/vgem_drm.h

Detected Declarations

• struct vgem_file

Annotated Snippet

struct vgem_file {
	struct idr fence_idr;
	struct mutex fence_mutex;
};

int vgem_fence_open(struct vgem_file *file);
int vgem_fence_attach_ioctl(struct drm_device *dev,
			    void *data,
			    struct drm_file *file);
int vgem_fence_signal_ioctl(struct drm_device *dev,
			    void *data,
			    struct drm_file *file);
void vgem_fence_close(struct vgem_file *file);

#endif

Annotation

• Immediate include surface: `drm/drm_gem.h`, `drm/drm_cache.h`, `uapi/drm/vgem_drm.h`.
• Detected declarations: `struct vgem_file`.
• 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.