1/* SPDX-License-Identifier: GPL-2.0 */
2#ifndef __ACPI_NUMA_H
3#define __ACPI_NUMA_H
4
5#ifdef CONFIG_ACPI_NUMA
6#include <linux/numa.h>
7
8/* Proximity bitmap length */
9#if MAX_NUMNODES > 256
10#define MAX_PXM_DOMAINS MAX_NUMNODES
11#else
12#define MAX_PXM_DOMAINS (256) /* Old pxm spec is defined 8 bit */
13#endif
14
15extern int pxm_to_node(int);
16extern int node_to_pxm(int);
17extern int acpi_map_pxm_to_node(int);
18extern unsigned char acpi_srat_revision;
19extern void disable_srat(void);
20
21extern void bad_srat(void);
22extern int srat_disabled(void);
23
24#else /* CONFIG_ACPI_NUMA */
25static inline void disable_srat(void)
26{
27}
28static inline int pxm_to_node(int pxm)
29{
30 return 0;
31}
32static inline int node_to_pxm(int node)
33{
34 return 0;
35}
36#endif /* CONFIG_ACPI_NUMA */
37
38#ifdef CONFIG_ACPI_HMAT
39extern void disable_hmat(void);
40#else /* CONFIG_ACPI_HMAT */
41static inline void disable_hmat(void)
42{
43}
44#endif /* CONFIG_ACPI_HMAT */
45#endif /* __ACPI_NUMA_H */
46

source code of linux/include/acpi/acpi_numa.h