2 * Copyright (C) 2002, Erich Focht, NEC
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation; either version 2 of the License, or
9 * (at your option) any later version.
11 #ifndef _ASM_IA64_TOPOLOGY_H
12 #define _ASM_IA64_TOPOLOGY_H
20 /* Nodes w/o CPUs are preferred for memory allocations, see build_zonelists */
21 #define PENALTY_FOR_NODE_WITH_CPUS 255
24 * Distance above which we begin to use zone reclaim
26 #define RECLAIM_DISTANCE 15
29 * Returns the number of the node containing CPU 'cpu'
31 #define cpu_to_node(cpu) (int)(cpu_to_node_map[cpu])
34 * Returns a bitmask of CPUs on Node 'node'.
36 #define node_to_cpumask(node) (node_to_cpu_mask[node])
37 #define cpumask_of_node(node) (&node_to_cpu_mask[node])
40 * Returns the number of the node containing Node 'nid'.
41 * Not implemented here. Multi-level hierarchies detected with
42 * the help of node_distance().
44 #define parent_node(nid) (nid)
47 * Returns the number of the first CPU on Node 'node'.
49 #define node_to_first_cpu(node) (cpumask_first(cpumask_of_node(node)))
52 * Determines the node for a given pci bus
54 #define pcibus_to_node(bus) PCI_CONTROLLER(bus)->node
56 void build_cpu_to_node_map(void);
58 #define SD_CPU_INIT (struct sched_domain) { \
59 .span = CPU_MASK_NONE, \
66 .imbalance_pct = 125, \
67 .cache_nice_tries = 2, \
73 .flags = SD_LOAD_BALANCE \
74 | SD_BALANCE_NEWIDLE \
77 .last_balance = jiffies, \
78 .balance_interval = 1, \
79 .nr_balance_failed = 0, \
82 /* sched_domains SD_NODE_INIT for IA64 NUMA machines */
83 #define SD_NODE_INIT (struct sched_domain) { \
84 .span = CPU_MASK_NONE, \
89 .max_interval = 8*(min(num_online_cpus(), 32)), \
91 .imbalance_pct = 125, \
92 .cache_nice_tries = 2, \
98 .flags = SD_LOAD_BALANCE \
103 .last_balance = jiffies, \
104 .balance_interval = 64, \
105 .nr_balance_failed = 0, \
108 #endif /* CONFIG_NUMA */
111 #define topology_physical_package_id(cpu) (cpu_data(cpu)->socket_id)
112 #define topology_core_id(cpu) (cpu_data(cpu)->core_id)
113 #define topology_core_siblings(cpu) (cpu_core_map[cpu])
114 #define topology_thread_siblings(cpu) (per_cpu(cpu_sibling_map, cpu))
115 #define smt_capable() (smp_num_siblings > 1)
118 extern void arch_fix_phys_package_id(int num, u32 slot);
120 #define pcibus_to_cpumask(bus) (pcibus_to_node(bus) == -1 ? \
122 node_to_cpumask(pcibus_to_node(bus)) \
125 #define cpumask_of_pcibus(bus) (pcibus_to_node(bus) == -1 ? \
127 cpumask_from_node(pcibus_to_node(bus)))
129 #include <asm-generic/topology.h>
131 #endif /* _ASM_IA64_TOPOLOGY_H */