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
7extern cpumask_t cpus_on_node[];
8
9#define cpumask_of_node(node)  (&cpus_on_node[node])
10
11struct pci_bus;
12extern int pcibus_to_node(struct pci_bus *);
13
14#define cpumask_of_pcibus(bus)	(cpu_online_mask)
15
16extern unsigned char node_distances[MAX_NUMNODES][MAX_NUMNODES];
17
18void numa_set_distance(int from, int to, int distance);
19
20#define node_distance(from, to)	(node_distances[(from)][(to)])
21
22#else
23#define pcibus_to_node(bus)	0
24#endif
25
26#endif /* _ASM_MACH_TOPOLOGY_H */
27