arch/s390/include/asm/archrandom.h

File Facts

System

Linux kernel

Corpus path

arch/s390/include/asm/archrandom.h

Extension

.h

Size

947 bytes

Lines

39

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.

Dependency Surface

• linux/static_key.h
• linux/preempt.h
• linux/atomic.h
• asm/cpacf.h

Detected Declarations

• function arch_get_random_longs
• function arch_get_random_seed_longs

Annotated Snippet

in_task()) {
		cpacf_trng(NULL, 0, (u8 *)v, max_longs * sizeof(*v));
		atomic64_add(max_longs * sizeof(*v), &s390_arch_random_counter);
		return max_longs;
	}
	return 0;
}

#endif /* _ASM_S390_ARCHRANDOM_H */

Annotation

• Immediate include surface: `linux/static_key.h`, `linux/preempt.h`, `linux/atomic.h`, `asm/cpacf.h`.
• Detected declarations: `function arch_get_random_longs`, `function arch_get_random_seed_longs`.
• 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.