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

File Facts

System

Linux kernel

Corpus path

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

Extension

.h

Size

549 bytes

Lines

30

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
• linux/ioctl.h

Detected Declarations

• struct clp_req

Annotated Snippet

struct clp_req {
	unsigned int c : 1;
	unsigned int r : 1;
	unsigned int lps : 6;
	unsigned int cmd : 8;
	unsigned int : 16;
	unsigned int reserved;
	__u64 data_p;
};

#define CLP_IOCTL_MAGIC 'c'

#define CLP_SYNC _IOWR(CLP_IOCTL_MAGIC, 0xC1, struct clp_req)

#endif

Annotation

• Immediate include surface: `linux/types.h`, `linux/ioctl.h`.
• Detected declarations: `struct clp_req`.
• 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.