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1da177e4 LT |
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 | |
8d08aed8 JS |
21 | |
22 | /* Nodes w/o CPUs are preferred for memory allocations, see build_zonelists */ | |
23 | #define PENALTY_FOR_NODE_WITH_CPUS 255 | |
24 | ||
e5ecc192 CL |
25 | /* |
26 | * Distance above which we begin to use zone reclaim | |
27 | */ | |
28 | #define RECLAIM_DISTANCE 15 | |
29 | ||
1da177e4 LT |
30 | /* |
31 | * Returns the number of the node containing CPU 'cpu' | |
32 | */ | |
33 | #define cpu_to_node(cpu) (int)(cpu_to_node_map[cpu]) | |
34 | ||
35 | /* | |
36 | * Returns a bitmask of CPUs on Node 'node'. | |
37 | */ | |
38 | #define node_to_cpumask(node) (node_to_cpu_mask[node]) | |
39 | ||
40 | /* | |
41 | * Returns the number of the node containing Node 'nid'. | |
42 | * Not implemented here. Multi-level hierarchies detected with | |
43 | * the help of node_distance(). | |
44 | */ | |
45 | #define parent_node(nid) (nid) | |
46 | ||
47 | /* | |
48 | * Returns the number of the first CPU on Node 'node'. | |
49 | */ | |
c660439b | 50 | #define node_to_first_cpu(node) (first_cpu(node_to_cpumask(node))) |
1da177e4 | 51 | |
514604c6 CL |
52 | /* |
53 | * Determines the node for a given pci bus | |
54 | */ | |
55 | #define pcibus_to_node(bus) PCI_CONTROLLER(bus)->node | |
56 | ||
1da177e4 LT |
57 | void build_cpu_to_node_map(void); |
58 | ||
687f1661 NP |
59 | #define SD_CPU_INIT (struct sched_domain) { \ |
60 | .span = CPU_MASK_NONE, \ | |
61 | .parent = NULL, \ | |
1a848870 | 62 | .child = NULL, \ |
687f1661 NP |
63 | .groups = NULL, \ |
64 | .min_interval = 1, \ | |
65 | .max_interval = 4, \ | |
66 | .busy_factor = 64, \ | |
67 | .imbalance_pct = 125, \ | |
687f1661 NP |
68 | .cache_nice_tries = 2, \ |
69 | .busy_idx = 2, \ | |
70 | .idle_idx = 1, \ | |
71 | .newidle_idx = 2, \ | |
72 | .wake_idx = 1, \ | |
73 | .forkexec_idx = 1, \ | |
74 | .flags = SD_LOAD_BALANCE \ | |
75 | | SD_BALANCE_NEWIDLE \ | |
76 | | SD_BALANCE_EXEC \ | |
77 | | SD_WAKE_AFFINE, \ | |
78 | .last_balance = jiffies, \ | |
79 | .balance_interval = 1, \ | |
80 | .nr_balance_failed = 0, \ | |
81 | } | |
82 | ||
1da177e4 LT |
83 | /* sched_domains SD_NODE_INIT for IA64 NUMA machines */ |
84 | #define SD_NODE_INIT (struct sched_domain) { \ | |
85 | .span = CPU_MASK_NONE, \ | |
86 | .parent = NULL, \ | |
1a848870 | 87 | .child = NULL, \ |
1da177e4 | 88 | .groups = NULL, \ |
687f1661 NP |
89 | .min_interval = 8, \ |
90 | .max_interval = 8*(min(num_online_cpus(), 32)), \ | |
91 | .busy_factor = 64, \ | |
1da177e4 | 92 | .imbalance_pct = 125, \ |
687f1661 NP |
93 | .cache_nice_tries = 2, \ |
94 | .busy_idx = 3, \ | |
95 | .idle_idx = 2, \ | |
96 | .newidle_idx = 0, /* unused */ \ | |
97 | .wake_idx = 1, \ | |
98 | .forkexec_idx = 1, \ | |
1da177e4 LT |
99 | .flags = SD_LOAD_BALANCE \ |
100 | | SD_BALANCE_EXEC \ | |
687f1661 | 101 | | SD_BALANCE_FORK \ |
08c183f3 | 102 | | SD_SERIALIZE \ |
1da177e4 LT |
103 | | SD_WAKE_BALANCE, \ |
104 | .last_balance = jiffies, \ | |
687f1661 | 105 | .balance_interval = 64, \ |
1da177e4 LT |
106 | .nr_balance_failed = 0, \ |
107 | } | |
108 | ||
1da177e4 LT |
109 | #endif /* CONFIG_NUMA */ |
110 | ||
69dcc991 ZY |
111 | #ifdef CONFIG_SMP |
112 | #define topology_physical_package_id(cpu) (cpu_data(cpu)->socket_id) | |
113 | #define topology_core_id(cpu) (cpu_data(cpu)->core_id) | |
114 | #define topology_core_siblings(cpu) (cpu_core_map[cpu]) | |
115 | #define topology_thread_siblings(cpu) (cpu_sibling_map[cpu]) | |
5c45bf27 | 116 | #define smt_capable() (smp_num_siblings > 1) |
69dcc991 ZY |
117 | #endif |
118 | ||
1da177e4 LT |
119 | #include <asm-generic/topology.h> |
120 | ||
121 | #endif /* _ASM_IA64_TOPOLOGY_H */ |