drivers/gpu/drm/amd/display/dmub/inc/dmub_trace_buffer.h

File Facts

System

Linux kernel

Corpus path

drivers/gpu/drm/amd/display/dmub/inc/dmub_trace_buffer.h

Extension

.h

Size

2082 bytes

Lines

69

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

• dmub_cmd.h

Detected Declarations

• struct dmcub_trace_buf_entry
• struct dmcub_trace_buf
• enum dmucb_trace_code

Annotated Snippet

struct dmcub_trace_buf_entry {
	enum dmucb_trace_code trace_code;
	uint32_t tick_count;
	uint32_t param0;
	uint32_t param1;
};

#define TRACE_BUF_SIZE (1024) //1 kB
#define PERF_TRACE_MAX_ENTRY ((TRACE_BUF_SIZE - 8)/sizeof(struct dmcub_trace_buf_entry))


struct dmcub_trace_buf {
	uint32_t entry_count;
	uint32_t clk_freq;
	struct dmcub_trace_buf_entry entries[PERF_TRACE_MAX_ENTRY];
};

#endif /* _DMUB_TRACE_BUFFER_H_ */

Annotation

• Immediate include surface: `dmub_cmd.h`.
• Detected declarations: `struct dmcub_trace_buf_entry`, `struct dmcub_trace_buf`, `enum dmucb_trace_code`.
• 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.