include/asm-generic/topology.h

Source file repositories/reference/linux-study-clean/include/asm-generic/topology.h

File Facts

System
Linux kernel
Corpus path
include/asm-generic/topology.h
Extension
.h
Size
2096 bytes
Lines
74
Domain
Repository Root And Misc
Bucket
include
Inferred role
Repository Root And Misc: implementation source
Status
source implementation candidate

Why This File Exists

Top-level or miscellaneous repository surface. Use this as map coverage unless a later manual pass promotes the file into a deeper subsystem dossier.

Dependency Surface

Detected Declarations

Annotated Snippet

#ifndef _ASM_GENERIC_TOPOLOGY_H
#define _ASM_GENERIC_TOPOLOGY_H

#ifndef	CONFIG_NUMA

/* Other architectures wishing to use this simple topology API should fill
   in the below functions as appropriate in their own <asm/topology.h> file. */
#ifndef cpu_to_node
#define cpu_to_node(cpu)	((void)(cpu),0)
#endif
#ifndef set_numa_node
#define set_numa_node(node)
#endif
#ifndef set_cpu_numa_node
#define set_cpu_numa_node(cpu, node)
#endif
#ifndef cpu_to_mem
#define cpu_to_mem(cpu)		((void)(cpu),0)
#endif

#ifndef cpumask_of_node
#define cpumask_of_node(node)	((void)(node), cpu_online_mask)
#endif
#ifndef pcibus_to_node
#define pcibus_to_node(bus)	((void)(bus), -1)
#endif

#ifndef cpumask_of_pcibus
#define cpumask_of_pcibus(bus)	(pcibus_to_node(bus) == -1 ?		\
				 cpu_all_mask :				\
				 cpumask_of_node(pcibus_to_node(bus)))
#endif

#endif	/* !CONFIG_NUMA */

#if !defined(CONFIG_NUMA) || !defined(CONFIG_HAVE_MEMORYLESS_NODES)

#ifndef set_numa_mem
#define set_numa_mem(node)
#endif
#ifndef set_cpu_numa_mem
#define set_cpu_numa_mem(cpu, node)
#endif

#endif	/* !CONFIG_NUMA || !CONFIG_HAVE_MEMORYLESS_NODES */

#endif /* _ASM_GENERIC_TOPOLOGY_H */

Annotation

Implementation Notes