xref: /openbmc/linux/include/acpi/acpi_numa.h (revision 86b5ec35)
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/kernel.h>
7 #include <linux/numa.h>
8 
9 /* Proximity bitmap length */
10 #if MAX_NUMNODES > 256
11 #define MAX_PXM_DOMAINS MAX_NUMNODES
12 #else
13 #define MAX_PXM_DOMAINS (256)	/* Old pxm spec is defined 8 bit */
14 #endif
15 
16 extern int pxm_to_node(int);
17 extern int node_to_pxm(int);
18 extern int acpi_map_pxm_to_node(int);
19 extern unsigned char acpi_srat_revision;
20 extern void disable_srat(void);
21 
22 extern void bad_srat(void);
23 extern int srat_disabled(void);
24 
25 #else				/* CONFIG_ACPI_NUMA */
26 static inline void disable_srat(void)
27 {
28 }
29 static inline int pxm_to_node(int pxm)
30 {
31 	return 0;
32 }
33 static inline int node_to_pxm(int node)
34 {
35 	return 0;
36 }
37 #endif				/* CONFIG_ACPI_NUMA */
38 
39 #ifdef CONFIG_ACPI_HMAT
40 extern void disable_hmat(void);
41 #else				/* CONFIG_ACPI_HMAT */
42 static inline void disable_hmat(void)
43 {
44 }
45 #endif				/* CONFIG_ACPI_HMAT */
46 #endif				/* __ACP_NUMA_H */
47