drivers/gpu/drm/i915/gt/intel_gt_debugfs.h

File Facts

System

Linux kernel

Corpus path

drivers/gpu/drm/i915/gt/intel_gt_debugfs.h

Extension

.h

Size

1573 bytes

Lines

54

Domain

Driver Families

Bucket

drivers/gpu

Inferred role

Driver Families: operation-table or driver-model contract

Status

pattern 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 an operation table; this is where Linux turns generic core objects into subsystem-specific behavior.
• Defines or uses C structs; map object ownership, embedded links, reference counts, and lock ownership.

Dependency Surface

• linux/file.h

Detected Declarations

• struct intel_gt
• struct intel_gt_debugfs_file

Annotated Snippet

static const struct file_operations __name ## _fops = {			\
	.owner = THIS_MODULE,						\
	.open = __name ## _open,					\
	.read = seq_read,						\
	.llseek = seq_lseek,						\
	.release = single_release,					\
}

#define DEFINE_INTEL_GT_DEBUGFS_ATTRIBUTE(__name)			\
static int __name ## _open(struct inode *inode, struct file *file)	\
{									\
	return single_open(file, __name ## _show, inode->i_private);	\
}									\
__GT_DEBUGFS_ATTRIBUTE_FOPS(__name)

#define DEFINE_INTEL_GT_DEBUGFS_ATTRIBUTE_WITH_SIZE(__name, __size_vf)		\
static int __name ## _open(struct inode *inode, struct file *file)		\
{										\
	return single_open_size(file, __name ## _show, inode->i_private,	\
			    __size_vf(inode->i_private));			\
}										\
__GT_DEBUGFS_ATTRIBUTE_FOPS(__name)

void intel_gt_debugfs_register(struct intel_gt *gt);

struct intel_gt_debugfs_file {
	const char *name;
	const struct file_operations *fops;
	bool (*eval)(void *data);
};

void intel_gt_debugfs_register_files(struct dentry *root,
				     const struct intel_gt_debugfs_file *files,
				     unsigned long count, void *data);

/* functions that need to be accessed by the upper level non-gt interfaces */
int intel_gt_debugfs_reset_show(struct intel_gt *gt, u64 *val);
void intel_gt_debugfs_reset_store(struct intel_gt *gt, u64 val);

#endif /* INTEL_GT_DEBUGFS_H */

Annotation

• Immediate include surface: `linux/file.h`.
• Detected declarations: `struct intel_gt`, `struct intel_gt_debugfs_file`.
• Atlas domain: Driver Families / drivers/gpu.
• Implementation status: pattern 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.