7d82bc56b9fae2f123326a936699819b4a5effa3
[linux-2.6.git] / include / asm-x86_64 / topology.h
1 #ifndef _ASM_X86_64_TOPOLOGY_H
2 #define _ASM_X86_64_TOPOLOGY_H
3
4 #include <linux/config.h>
5
6 #ifdef CONFIG_NUMA
7
8 #include <asm/mpspec.h>
9 #include <asm/bitops.h>
10
11 /* Map the K8 CPU local memory controllers to a simple 1:1 CPU:NODE topology */
12
13 extern cpumask_t cpu_online_map;
14
15 extern unsigned char cpu_to_node[];
16 extern cpumask_t     node_to_cpumask[];
17
18 #ifdef CONFIG_ACPI_NUMA
19 extern int __node_distance(int, int);
20 #define node_distance(a,b) __node_distance(a,b)
21 /* #else fallback version */
22 #endif
23
24 #define cpu_to_node(cpu)                (cpu_to_node[cpu])
25 #define parent_node(node)               (node)
26 #define node_to_first_cpu(node)         (first_cpu(node_to_cpumask[node]))
27 #define node_to_cpumask(node)           (node_to_cpumask[node])
28 #define pcibus_to_node(bus)             ((long)(bus->sysdata))  
29 #define pcibus_to_cpumask(bus)          node_to_cpumask(pcibus_to_node(bus));
30
31 #define numa_node_id()                  read_pda(nodenumber)
32
33 /* sched_domains SD_NODE_INIT for x86_64 machines */
34 #define SD_NODE_INIT (struct sched_domain) {            \
35         .span                   = CPU_MASK_NONE,        \
36         .parent                 = NULL,                 \
37         .groups                 = NULL,                 \
38         .min_interval           = 8,                    \
39         .max_interval           = 32,                   \
40         .busy_factor            = 32,                   \
41         .imbalance_pct          = 125,                  \
42         .cache_hot_time         = (10*1000000),         \
43         .cache_nice_tries       = 2,                    \
44         .busy_idx               = 3,                    \
45         .idle_idx               = 2,                    \
46         .newidle_idx            = 0,                    \
47         .wake_idx               = 1,                    \
48         .forkexec_idx           = 1,                    \
49         .per_cpu_gain           = 100,                  \
50         .flags                  = SD_LOAD_BALANCE       \
51                                 | SD_BALANCE_FORK       \
52                                 | SD_BALANCE_EXEC       \
53                                 | SD_WAKE_BALANCE,      \
54         .last_balance           = jiffies,              \
55         .balance_interval       = 1,                    \
56         .nr_balance_failed      = 0,                    \
57 }
58
59 #endif
60
61 #include <asm-generic/topology.h>
62
63 #endif