4e64c2a6b36913a5f2a0da25c9c7195ff39d747f
[linux-2.6.git] / include / asm-ia64 / topology.h
1 /*
2  * linux/include/asm-ia64/topology.h
3  *
4  * Copyright (C) 2002, Erich Focht, NEC
5  *
6  * All rights reserved.
7  *
8  * This program is free software; you can redistribute it and/or modify
9  * it under the terms of the GNU General Public License as published by
10  * the Free Software Foundation; either version 2 of the License, or
11  * (at your option) any later version.
12  */
13 #ifndef _ASM_IA64_TOPOLOGY_H
14 #define _ASM_IA64_TOPOLOGY_H
15
16 #include <asm/acpi.h>
17 #include <asm/numa.h>
18 #include <asm/smp.h>
19
20 #ifdef CONFIG_NUMA
21 /*
22  * Returns the number of the node containing CPU 'cpu'
23  */
24 #define cpu_to_node(cpu) (int)(cpu_to_node_map[cpu])
25
26 /*
27  * Returns a bitmask of CPUs on Node 'node'.
28  */
29 #define node_to_cpumask(node) (node_to_cpu_mask[node])
30
31 /*
32  * Returns the number of the node containing Node 'nid'.
33  * Not implemented here. Multi-level hierarchies detected with
34  * the help of node_distance().
35  */
36 #define parent_node(nid) (nid)
37
38 /*
39  * Returns the number of the first CPU on Node 'node'.
40  */
41 #define node_to_first_cpu(node) (__ffs(node_to_cpumask(node)))
42
43 void build_cpu_to_node_map(void);
44
45 #define SD_CPU_INIT (struct sched_domain) {             \
46         .span                   = CPU_MASK_NONE,        \
47         .parent                 = NULL,                 \
48         .groups                 = NULL,                 \
49         .min_interval           = 1,                    \
50         .max_interval           = 4,                    \
51         .busy_factor            = 64,                   \
52         .imbalance_pct          = 125,                  \
53         .cache_hot_time         = (10*1000000),         \
54         .per_cpu_gain           = 100,                  \
55         .cache_nice_tries       = 2,                    \
56         .busy_idx               = 2,                    \
57         .idle_idx               = 1,                    \
58         .newidle_idx            = 2,                    \
59         .wake_idx               = 1,                    \
60         .forkexec_idx           = 1,                    \
61         .flags                  = SD_LOAD_BALANCE       \
62                                 | SD_BALANCE_NEWIDLE    \
63                                 | SD_BALANCE_EXEC       \
64                                 | SD_WAKE_AFFINE,       \
65         .last_balance           = jiffies,              \
66         .balance_interval       = 1,                    \
67         .nr_balance_failed      = 0,                    \
68 }
69
70 /* sched_domains SD_NODE_INIT for IA64 NUMA machines */
71 #define SD_NODE_INIT (struct sched_domain) {            \
72         .span                   = CPU_MASK_NONE,        \
73         .parent                 = NULL,                 \
74         .groups                 = NULL,                 \
75         .min_interval           = 8,                    \
76         .max_interval           = 8*(min(num_online_cpus(), 32)), \
77         .busy_factor            = 64,                   \
78         .imbalance_pct          = 125,                  \
79         .cache_hot_time         = (10*1000000),         \
80         .cache_nice_tries       = 2,                    \
81         .busy_idx               = 3,                    \
82         .idle_idx               = 2,                    \
83         .newidle_idx            = 0, /* unused */       \
84         .wake_idx               = 1,                    \
85         .forkexec_idx           = 1,                    \
86         .per_cpu_gain           = 100,                  \
87         .flags                  = SD_LOAD_BALANCE       \
88                                 | SD_BALANCE_EXEC       \
89                                 | SD_BALANCE_FORK       \
90                                 | SD_WAKE_BALANCE,      \
91         .last_balance           = jiffies,              \
92         .balance_interval       = 64,                   \
93         .nr_balance_failed      = 0,                    \
94 }
95
96 /* sched_domains SD_ALLNODES_INIT for IA64 NUMA machines */
97 #define SD_ALLNODES_INIT (struct sched_domain) {        \
98         .span                   = CPU_MASK_NONE,        \
99         .parent                 = NULL,                 \
100         .groups                 = NULL,                 \
101         .min_interval           = 64,                   \
102         .max_interval           = 64*num_online_cpus(), \
103         .busy_factor            = 128,                  \
104         .imbalance_pct          = 133,                  \
105         .cache_hot_time         = (10*1000000),         \
106         .cache_nice_tries       = 1,                    \
107         .busy_idx               = 3,                    \
108         .idle_idx               = 3,                    \
109         .newidle_idx            = 0, /* unused */       \
110         .wake_idx               = 0, /* unused */       \
111         .forkexec_idx           = 0, /* unused */       \
112         .per_cpu_gain           = 100,                  \
113         .flags                  = SD_LOAD_BALANCE,      \
114         .last_balance           = jiffies,              \
115         .balance_interval       = 64,                   \
116         .nr_balance_failed      = 0,                    \
117 }
118
119 #endif /* CONFIG_NUMA */
120
121 #include <asm-generic/topology.h>
122
123 #endif /* _ASM_IA64_TOPOLOGY_H */