ia64/linux-2.6.18-xen.hg

view include/asm-i386/topology.h @ 452:c7ed6fe5dca0

kexec: dont initialise regions in reserve_memory()

There is no need to initialise efi_memmap_res and boot_param_res in
reserve_memory() for the initial xen domain as it is done in
machine_kexec_setup_resources() using values from the kexec hypercall.

Signed-off-by: Simon Horman <horms@verge.net.au>
author Keir Fraser <keir.fraser@citrix.com>
date Thu Feb 28 10:55:18 2008 +0000 (2008-02-28)
parents 831230e53067
children
line source
1 /*
2 * linux/include/asm-i386/topology.h
3 *
4 * Written by: Matthew Dobson, IBM Corporation
5 *
6 * Copyright (C) 2002, IBM Corp.
7 *
8 * All rights reserved.
9 *
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.
14 *
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.
20 *
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.
24 *
25 * Send feedback to <colpatch@us.ibm.com>
26 */
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) (cpu_core_map[cpu])
34 #define topology_thread_siblings(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)
49 {
50 return cpu_2_node[cpu];
51 }
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)
59 {
60 return node_2_cpu_mask[node];
61 }
63 /* Returns the number of the first CPU on Node 'node'. */
64 static inline int node_to_first_cpu(int node)
65 {
66 cpumask_t mask = node_to_cpumask(node);
67 return first_cpu(mask);
68 }
70 #define pcibus_to_node(bus) ((long) (bus)->sysdata)
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 .groups = NULL, \
78 .min_interval = 8, \
79 .max_interval = 32, \
80 .busy_factor = 32, \
81 .imbalance_pct = 125, \
82 .cache_nice_tries = 1, \
83 .busy_idx = 3, \
84 .idle_idx = 1, \
85 .newidle_idx = 2, \
86 .wake_idx = 1, \
87 .per_cpu_gain = 100, \
88 .flags = SD_LOAD_BALANCE \
89 | SD_BALANCE_EXEC \
90 | SD_BALANCE_FORK \
91 | SD_WAKE_BALANCE, \
92 .last_balance = jiffies, \
93 .balance_interval = 1, \
94 .nr_balance_failed = 0, \
95 }
97 extern unsigned long node_start_pfn[];
98 extern unsigned long node_end_pfn[];
99 extern unsigned long node_remap_size[];
101 #define node_has_online_mem(nid) (node_start_pfn[nid] != node_end_pfn[nid])
103 #else /* !CONFIG_NUMA */
104 /*
105 * Other i386 platforms should define their own version of the
106 * above macros here.
107 */
109 #include <asm-generic/topology.h>
111 #endif /* CONFIG_NUMA */
113 extern cpumask_t cpu_coregroup_map(int cpu);
115 #ifdef CONFIG_SMP
116 #define mc_capable() (boot_cpu_data.x86_max_cores > 1)
117 #define smt_capable() (smp_num_siblings > 1)
118 #endif
120 #endif /* _ASM_I386_TOPOLOGY_H */