arch/s390/include/asm/sparsemem.h

File Facts

System

Linux kernel

Corpus path

arch/s390/include/asm/sparsemem.h

Extension

.h

Size

506 bytes

Lines

25

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

• No C-style include directives detected by the generator.

Detected Declarations

• function memory_add_physaddr_to_nid
• function phys_to_target_node

Annotated Snippet

#ifndef _ASM_S390_SPARSEMEM_H
#define _ASM_S390_SPARSEMEM_H

#define SECTION_SIZE_BITS	27
#define MAX_PHYSMEM_BITS	CONFIG_MAX_PHYSMEM_BITS

#ifdef CONFIG_NUMA

static inline int memory_add_physaddr_to_nid(u64 addr)
{
	return 0;
}
#define memory_add_physaddr_to_nid memory_add_physaddr_to_nid

static inline int phys_to_target_node(u64 start)
{
	return 0;
}
#define phys_to_target_node phys_to_target_node

#endif /* CONFIG_NUMA */

#endif /* _ASM_S390_SPARSEMEM_H */

Annotation

• Detected declarations: `function memory_add_physaddr_to_nid`, `function phys_to_target_node`.
• 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.