1 #ifndef _ASM_X86_64_TOPOLOGY_H
2 #define _ASM_X86_64_TOPOLOGY_H
4 #include <linux/config.h>
6 #ifdef CONFIG_DISCONTIGMEM
8 #include <asm/mpspec.h>
9 #include <asm/bitops.h>
11 /* Map the K8 CPU local memory controllers to a simple 1:1 CPU:NODE topology */
13 extern cpumask_t cpu_online_map;
15 extern unsigned char cpu_to_node[];
16 extern cpumask_t node_to_cpumask[];
18 #define cpu_to_node(cpu) (cpu_to_node[cpu])
19 #define parent_node(node) (node)
20 #define node_to_first_cpu(node) (__ffs(node_to_cpumask[node]))
21 #define node_to_cpumask(node) (node_to_cpumask[node])
23 static inline unsigned long pcibus_to_cpumask(int bus)
25 return mp_bus_to_cpumask[bus] & cpu_online_map;
28 #define NODE_BALANCE_RATE 30 /* CHECKME */
32 #include <asm-generic/topology.h>