1 /* SPDX-License-Identifier: GPL-2.0 */
2 #ifndef _ASM_MACH_TOPOLOGY_H
3 #define _ASM_MACH_TOPOLOGY_H
4 
5 #ifdef CONFIG_NUMA
6 
7 #define cpu_to_node(cpu)	(cpu_logical_map(cpu) >> 2)
8 
9 extern cpumask_t __node_cpumask[];
10 #define cpumask_of_node(node)	(&__node_cpumask[node])
11 
12 struct pci_bus;
13 extern int pcibus_to_node(struct pci_bus *);
14 
15 #define cpumask_of_pcibus(bus)	(cpu_online_mask)
16 
17 extern unsigned char __node_distances[MAX_NUMNODES][MAX_NUMNODES];
18 
19 #define node_distance(from, to)	(__node_distances[(from)][(to)])
20 
21 #endif
22 
23 #include <asm-generic/topology.h>
24 
25 #endif /* _ASM_MACH_TOPOLOGY_H */
26