arch/s390/include/uapi/asm/diag.h

File Facts

System

Linux kernel

Corpus path

arch/s390/include/uapi/asm/diag.h

Extension

.h

Size

811 bytes

Lines

33

Domain

Architecture Layer

Bucket

arch/s390

Inferred role

Architecture Layer: implementation source

Status

source implementation candidate

Why This File Exists

CPU and platform-specific kernel glue: boot entry, traps, syscall entry, interrupts, page tables, context switch, and low-level barriers.

• CPU and platform-specific kernel glue: boot entry, traps, syscall entry, interrupts, page tables, context switch, and low-level barriers.
• Defines or uses C structs; map object ownership, embedded links, reference counts, and lock ownership.

Dependency Surface

• linux/types.h

Detected Declarations

• struct diag324_pib
• struct diag310_memtop

Annotated Snippet

struct diag324_pib {
	__u64 address;
	__u64 sequence;
};

struct diag310_memtop {
	__u64 address;
	__u64 nesting_lvl;
};

/* Diag ioctl definitions */
#define DIAG324_GET_PIBBUF	_IOWR(DIAG_MAGIC_STR, 0x77, struct diag324_pib)
#define DIAG324_GET_PIBLEN	_IOR(DIAG_MAGIC_STR, 0x78, size_t)
#define DIAG310_GET_STRIDE	_IOR(DIAG_MAGIC_STR, 0x79, size_t)
#define DIAG310_GET_MEMTOPLEN	_IOWR(DIAG_MAGIC_STR, 0x7a, size_t)
#define DIAG310_GET_MEMTOPBUF	_IOWR(DIAG_MAGIC_STR, 0x7b, struct diag310_memtop)

#endif /* __S390_UAPI_ASM_DIAG_H */

Annotation

• Immediate include surface: `linux/types.h`.
• Detected declarations: `struct diag324_pib`, `struct diag310_memtop`.
• Atlas domain: Architecture Layer / arch/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.