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Linus Torvalds1da177e2005-04-16 15:20:36 -07001/*
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
Jack Steiner8d08aed2006-01-17 15:42:46 -060021
22/* Nodes w/o CPUs are preferred for memory allocations, see build_zonelists */
23#define PENALTY_FOR_NODE_WITH_CPUS 255
24
Linus Torvalds1da177e2005-04-16 15:20:36 -070025/*
26 * Returns the number of the node containing CPU 'cpu'
27 */
28#define cpu_to_node(cpu) (int)(cpu_to_node_map[cpu])
29
30/*
31 * Returns a bitmask of CPUs on Node 'node'.
32 */
33#define node_to_cpumask(node) (node_to_cpu_mask[node])
34
35/*
36 * Returns the number of the node containing Node 'nid'.
37 * Not implemented here. Multi-level hierarchies detected with
38 * the help of node_distance().
39 */
40#define parent_node(nid) (nid)
41
42/*
43 * Returns the number of the first CPU on Node 'node'.
44 */
Ravikiran G Thirumalaic6604392005-12-22 14:21:34 -080045#define node_to_first_cpu(node) (first_cpu(node_to_cpumask(node)))
Linus Torvalds1da177e2005-04-16 15:20:36 -070046
Christoph Lameter514604c2005-07-07 16:59:00 -070047/*
48 * Determines the node for a given pci bus
49 */
50#define pcibus_to_node(bus) PCI_CONTROLLER(bus)->node
51
Linus Torvalds1da177e2005-04-16 15:20:36 -070052void build_cpu_to_node_map(void);
53
Nick Piggin687f1662005-06-25 14:57:21 -070054#define SD_CPU_INIT (struct sched_domain) { \
55 .span = CPU_MASK_NONE, \
56 .parent = NULL, \
57 .groups = NULL, \
58 .min_interval = 1, \
59 .max_interval = 4, \
60 .busy_factor = 64, \
61 .imbalance_pct = 125, \
Nick Piggin687f1662005-06-25 14:57:21 -070062 .per_cpu_gain = 100, \
63 .cache_nice_tries = 2, \
64 .busy_idx = 2, \
65 .idle_idx = 1, \
66 .newidle_idx = 2, \
67 .wake_idx = 1, \
68 .forkexec_idx = 1, \
69 .flags = SD_LOAD_BALANCE \
70 | SD_BALANCE_NEWIDLE \
71 | SD_BALANCE_EXEC \
72 | SD_WAKE_AFFINE, \
73 .last_balance = jiffies, \
74 .balance_interval = 1, \
75 .nr_balance_failed = 0, \
76}
77
Linus Torvalds1da177e2005-04-16 15:20:36 -070078/* sched_domains SD_NODE_INIT for IA64 NUMA machines */
79#define SD_NODE_INIT (struct sched_domain) { \
80 .span = CPU_MASK_NONE, \
81 .parent = NULL, \
82 .groups = NULL, \
Nick Piggin687f1662005-06-25 14:57:21 -070083 .min_interval = 8, \
84 .max_interval = 8*(min(num_online_cpus(), 32)), \
85 .busy_factor = 64, \
Linus Torvalds1da177e2005-04-16 15:20:36 -070086 .imbalance_pct = 125, \
Nick Piggin687f1662005-06-25 14:57:21 -070087 .cache_nice_tries = 2, \
88 .busy_idx = 3, \
89 .idle_idx = 2, \
90 .newidle_idx = 0, /* unused */ \
91 .wake_idx = 1, \
92 .forkexec_idx = 1, \
Linus Torvalds1da177e2005-04-16 15:20:36 -070093 .per_cpu_gain = 100, \
94 .flags = SD_LOAD_BALANCE \
95 | SD_BALANCE_EXEC \
Nick Piggin687f1662005-06-25 14:57:21 -070096 | SD_BALANCE_FORK \
Linus Torvalds1da177e2005-04-16 15:20:36 -070097 | SD_WAKE_BALANCE, \
98 .last_balance = jiffies, \
Nick Piggin687f1662005-06-25 14:57:21 -070099 .balance_interval = 64, \
Linus Torvalds1da177e2005-04-16 15:20:36 -0700100 .nr_balance_failed = 0, \
101}
102
Linus Torvalds1da177e2005-04-16 15:20:36 -0700103#endif /* CONFIG_NUMA */
104
Zhang, Yanmin69dcc992006-02-03 03:04:36 -0800105#ifdef CONFIG_SMP
106#define topology_physical_package_id(cpu) (cpu_data(cpu)->socket_id)
107#define topology_core_id(cpu) (cpu_data(cpu)->core_id)
108#define topology_core_siblings(cpu) (cpu_core_map[cpu])
109#define topology_thread_siblings(cpu) (cpu_sibling_map[cpu])
110#endif
111
Linus Torvalds1da177e2005-04-16 15:20:36 -0700112#include <asm-generic/topology.h>
113
114#endif /* _ASM_IA64_TOPOLOGY_H */