drivers/s390/cio/qdio_debug.h

File Facts

System

Linux kernel

Corpus path

drivers/s390/cio/qdio_debug.h

Extension

.h

Size

1843 bytes

Lines

74

Domain

Driver Families

Bucket

drivers/s390

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

• asm/debug.h
• asm/qdio.h
• qdio.h

Detected Declarations

• function DBF_HEX
• function DBF_ERROR_HEX
• function DBF_DEV_HEX

Annotated Snippet

if (debug_level_enabled(device->debug_area, level)) { \
			snprintf(debug_buffer, QDIO_DBF_LEN, text); \
			debug_text_event(device->debug_area, level, debug_buffer); \
		} \
	} while (0)

static inline void DBF_DEV_HEX(struct qdio_irq *dev, void *addr,
			       int len, int level)
{
	debug_event(dev->debug_area, level, addr, len);
}

int qdio_allocate_dbf(struct qdio_irq *irq_ptr);
void qdio_setup_debug_entries(struct qdio_irq *irq_ptr);
void qdio_shutdown_debug_entries(struct qdio_irq *irq_ptr);
int qdio_debug_init(void);
void qdio_debug_exit(void);

#endif

Annotation

• Immediate include surface: `asm/debug.h`, `asm/qdio.h`, `qdio.h`.
• Detected declarations: `function DBF_HEX`, `function DBF_ERROR_HEX`, `function DBF_DEV_HEX`.
• Atlas domain: Driver Families / drivers/s390.
• 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.