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 #endif /* CONFIG_ACPI_NUMA */ 34 35 #ifdef CONFIG_ACPI_HMAT 36 extern void disable_hmat(void); 37 #else /* CONFIG_ACPI_HMAT */ 38 static inline void disable_hmat(void) 39 { 40 } 41 #endif /* CONFIG_ACPI_HMAT */ 42 #endif /* __ACP_NUMA_H */ 43