fs: use kmem_cache_zalloc instead
[pv_ops_mirror.git] / include / asm-x86 / topology_32.h
blobae1074603c4b1e4508059fc40d08ef83d1ecb99a
1 /*
2 * linux/include/asm-i386/topology.h
4 * Written by: Matthew Dobson, IBM Corporation
6 * Copyright (C) 2002, IBM Corp.
8 * All rights reserved.
10 * This program is free software; you can redistribute it and/or modify
11 * it under the terms of the GNU General Public License as published by
12 * the Free Software Foundation; either version 2 of the License, or
13 * (at your option) any later version.
15 * This program is distributed in the hope that it will be useful, but
16 * WITHOUT ANY WARRANTY; without even the implied warranty of
17 * MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or
18 * NON INFRINGEMENT. See the GNU General Public License for more
19 * details.
21 * You should have received a copy of the GNU General Public License
22 * along with this program; if not, write to the Free Software
23 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
25 * Send feedback to <colpatch@us.ibm.com>
27 #ifndef _ASM_I386_TOPOLOGY_H
28 #define _ASM_I386_TOPOLOGY_H
30 #ifdef CONFIG_X86_HT
31 #define topology_physical_package_id(cpu) (cpu_data[cpu].phys_proc_id)
32 #define topology_core_id(cpu) (cpu_data[cpu].cpu_core_id)
33 #define topology_core_siblings(cpu) (per_cpu(cpu_core_map, cpu))
34 #define topology_thread_siblings(cpu) (per_cpu(cpu_sibling_map, cpu))
35 #endif
37 #ifdef CONFIG_NUMA
39 #include <asm/mpspec.h>
41 #include <linux/cpumask.h>
43 /* Mappings between logical cpu number and node number */
44 extern cpumask_t node_2_cpu_mask[];
45 extern int cpu_2_node[];
47 /* Returns the number of the node containing CPU 'cpu' */
48 static inline int cpu_to_node(int cpu)
50 return cpu_2_node[cpu];
53 /* Returns the number of the node containing Node 'node'. This architecture is flat,
54 so it is a pretty simple function! */
55 #define parent_node(node) (node)
57 /* Returns a bitmask of CPUs on Node 'node'. */
58 static inline cpumask_t node_to_cpumask(int node)
60 return node_2_cpu_mask[node];
63 /* Returns the number of the first CPU on Node 'node'. */
64 static inline int node_to_first_cpu(int node)
66 cpumask_t mask = node_to_cpumask(node);
67 return first_cpu(mask);
70 #define pcibus_to_node(bus) ((struct pci_sysdata *)((bus)->sysdata))->node
71 #define pcibus_to_cpumask(bus) node_to_cpumask(pcibus_to_node(bus))
73 /* sched_domains SD_NODE_INIT for NUMAQ machines */
74 #define SD_NODE_INIT (struct sched_domain) { \
75 .span = CPU_MASK_NONE, \
76 .parent = NULL, \
77 .child = NULL, \
78 .groups = NULL, \
79 .min_interval = 8, \
80 .max_interval = 32, \
81 .busy_factor = 32, \
82 .imbalance_pct = 125, \
83 .cache_nice_tries = 1, \
84 .busy_idx = 3, \
85 .idle_idx = 1, \
86 .newidle_idx = 2, \
87 .wake_idx = 1, \
88 .flags = SD_LOAD_BALANCE \
89 | SD_BALANCE_EXEC \
90 | SD_BALANCE_FORK \
91 | SD_SERIALIZE \
92 | SD_WAKE_BALANCE, \
93 .last_balance = jiffies, \
94 .balance_interval = 1, \
95 .nr_balance_failed = 0, \
98 extern unsigned long node_start_pfn[];
99 extern unsigned long node_end_pfn[];
100 extern unsigned long node_remap_size[];
102 #define node_has_online_mem(nid) (node_start_pfn[nid] != node_end_pfn[nid])
104 #else /* !CONFIG_NUMA */
106 * Other i386 platforms should define their own version of the
107 * above macros here.
110 #include <asm-generic/topology.h>
112 #endif /* CONFIG_NUMA */
114 extern cpumask_t cpu_coregroup_map(int cpu);
116 #ifdef CONFIG_SMP
117 #define mc_capable() (boot_cpu_data.x86_max_cores > 1)
118 #define smt_capable() (smp_num_siblings > 1)
119 #endif
121 #endif /* _ASM_I386_TOPOLOGY_H */