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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/*
Christoph Lametere5ecc192006-04-13 18:23:53 -070026 * Distance above which we begin to use zone reclaim
27 */
28#define RECLAIM_DISTANCE 15
29
30/*
Linus Torvalds1da177e2005-04-16 15:20:36 -070031 * 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 */
Ravikiran G Thirumalaic6604392005-12-22 14:21:34 -080050#define node_to_first_cpu(node) (first_cpu(node_to_cpumask(node)))
Linus Torvalds1da177e2005-04-16 15:20:36 -070051
Christoph Lameter514604c2005-07-07 16:59:00 -070052/*
53 * Determines the node for a given pci bus
54 */
55#define pcibus_to_node(bus) PCI_CONTROLLER(bus)->node
56
Linus Torvalds1da177e2005-04-16 15:20:36 -070057void build_cpu_to_node_map(void);
58
Nick Piggin687f1662005-06-25 14:57:21 -070059#define SD_CPU_INIT (struct sched_domain) { \
60 .span = CPU_MASK_NONE, \
61 .parent = NULL, \
Siddha, Suresh B1a848872006-10-03 01:14:08 -070062 .child = NULL, \
Nick Piggin687f1662005-06-25 14:57:21 -070063 .groups = NULL, \
64 .min_interval = 1, \
65 .max_interval = 4, \
66 .busy_factor = 64, \
67 .imbalance_pct = 125, \
Nick Piggin687f1662005-06-25 14:57:21 -070068 .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
Linus Torvalds1da177e2005-04-16 15:20:36 -070083/* 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, \
Siddha, Suresh B1a848872006-10-03 01:14:08 -070087 .child = NULL, \
Linus Torvalds1da177e2005-04-16 15:20:36 -070088 .groups = NULL, \
Nick Piggin687f1662005-06-25 14:57:21 -070089 .min_interval = 8, \
90 .max_interval = 8*(min(num_online_cpus(), 32)), \
91 .busy_factor = 64, \
Linus Torvalds1da177e2005-04-16 15:20:36 -070092 .imbalance_pct = 125, \
Nick Piggin687f1662005-06-25 14:57:21 -070093 .cache_nice_tries = 2, \
94 .busy_idx = 3, \
95 .idle_idx = 2, \
Hidetoshi Seto1d3504f2008-04-15 14:04:23 +090096 .newidle_idx = 2, \
Nick Piggin687f1662005-06-25 14:57:21 -070097 .wake_idx = 1, \
98 .forkexec_idx = 1, \
Linus Torvalds1da177e2005-04-16 15:20:36 -070099 .flags = SD_LOAD_BALANCE \
100 | SD_BALANCE_EXEC \
Nick Piggin687f1662005-06-25 14:57:21 -0700101 | SD_BALANCE_FORK \
Christoph Lameter08c183f2006-12-10 02:20:29 -0800102 | SD_SERIALIZE \
Linus Torvalds1da177e2005-04-16 15:20:36 -0700103 | SD_WAKE_BALANCE, \
104 .last_balance = jiffies, \
Nick Piggin687f1662005-06-25 14:57:21 -0700105 .balance_interval = 64, \
Linus Torvalds1da177e2005-04-16 15:20:36 -0700106 .nr_balance_failed = 0, \
107}
108
Linus Torvalds1da177e2005-04-16 15:20:36 -0700109#endif /* CONFIG_NUMA */
110
Zhang, Yanmin69dcc992006-02-03 03:04:36 -0800111#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])
Mike Travisd5a74302007-10-16 01:24:05 -0700115#define topology_thread_siblings(cpu) (per_cpu(cpu_sibling_map, cpu))
Siddha, Suresh B5c45bf22006-06-27 02:54:42 -0700116#define smt_capable() (smp_num_siblings > 1)
Zhang, Yanmin69dcc992006-02-03 03:04:36 -0800117#endif
118
Mike Travisaa6b5442008-03-31 08:41:55 -0700119#define pcibus_to_cpumask(bus) (pcibus_to_node(bus) == -1 ? \
120 CPU_MASK_ALL : \
121 node_to_cpumask(pcibus_to_node(bus)) \
122 )
123
Linus Torvalds1da177e2005-04-16 15:20:36 -0700124#include <asm-generic/topology.h>
125
126#endif /* _ASM_IA64_TOPOLOGY_H */