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])
39 * Returns the number of the node containing Node 'nid'.
40 * Not implemented here. Multi-level hierarchies detected with
41 * the help of node_distance().
43 #define parent_node(nid) (nid)
46 * Returns the number of the first CPU on Node 'node'.
48 #define node_to_first_cpu(node) (first_cpu(node_to_cpumask(node)))
51 * Determines the node for a given pci bus
53 #define pcibus_to_node(bus) PCI_CONTROLLER(bus)->node
55 void build_cpu_to_node_map(void);
57 #define SD_CPU_INIT (struct sched_domain) { \
64 .imbalance_pct = 125, \
65 .cache_nice_tries = 2, \
71 .flags = SD_LOAD_BALANCE \
72 | SD_BALANCE_NEWIDLE \
75 .last_balance = jiffies, \
76 .balance_interval = 1, \
77 .nr_balance_failed = 0, \
80 /* sched_domains SD_NODE_INIT for IA64 NUMA machines */
81 #define SD_NODE_INIT (struct sched_domain) { \
86 .max_interval = 8*(min(num_online_cpus(), 32)), \
88 .imbalance_pct = 125, \
89 .cache_nice_tries = 2, \
95 .flags = SD_LOAD_BALANCE \
100 .last_balance = jiffies, \
101 .balance_interval = 64, \
102 .nr_balance_failed = 0, \
105 #endif /* CONFIG_NUMA */
108 #define topology_physical_package_id(cpu) (cpu_data(cpu)->socket_id)
109 #define topology_core_id(cpu) (cpu_data(cpu)->core_id)
110 #define topology_core_siblings(cpu) (cpu_core_map[cpu])
111 #define topology_thread_siblings(cpu) (per_cpu(cpu_sibling_map, cpu))
112 #define smt_capable() (smp_num_siblings > 1)
115 extern void arch_fix_phys_package_id(int num, u32 slot);
117 #define pcibus_to_cpumask(bus) (pcibus_to_node(bus) == -1 ? \
119 node_to_cpumask(pcibus_to_node(bus)) \
122 #include <asm-generic/topology.h>
124 #endif /* _ASM_IA64_TOPOLOGY_H */