arch/mips/include/asm/mach-loongson64/topology.h

File Facts

System

Linux kernel

Corpus path

arch/mips/include/asm/mach-loongson64/topology.h

Extension

.h

Size

627 bytes

Lines

26

Domain

Architecture Layer

Bucket

arch/mips

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

• asm-generic/topology.h

Detected Declarations

• struct pci_bus

Annotated Snippet

#ifndef _ASM_MACH_TOPOLOGY_H
#define _ASM_MACH_TOPOLOGY_H

#ifdef CONFIG_NUMA

#define cpu_to_node(cpu)	(cpu_logical_map(cpu) >> 2)

extern cpumask_t __node_cpumask[];
#define cpumask_of_node(node)	  ((node) == NUMA_NO_NODE ? cpu_all_mask : &__node_cpumask[node])

struct pci_bus;
extern int pcibus_to_node(struct pci_bus *);

#define cpumask_of_pcibus(bus)	(cpu_online_mask)

extern unsigned char __node_distances[MAX_NUMNODES][MAX_NUMNODES];

#define node_distance(from, to)	(__node_distances[(from)][(to)])

#endif

#include <asm-generic/topology.h>

#endif /* _ASM_MACH_TOPOLOGY_H */

Annotation

• Immediate include surface: `asm-generic/topology.h`.
• Detected declarations: `struct pci_bus`.
• Atlas domain: Architecture Layer / arch/mips.
• 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.