Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 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 |
| 29 | |
James Bottomley | 8b09fb3 | 2006-02-14 13:53:05 -0800 | [diff] [blame] | 30 | #ifdef CONFIG_X86_HT |
Rohit Seth | 4b89aff | 2006-06-27 02:53:46 -0700 | [diff] [blame] | 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) |
Zhang, Yanmin | 69dcc99 | 2006-02-03 03:04:36 -0800 | [diff] [blame] | 33 | #define topology_core_siblings(cpu) (cpu_core_map[cpu]) |
| 34 | #define topology_thread_siblings(cpu) (cpu_sibling_map[cpu]) |
| 35 | #endif |
| 36 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 37 | #ifdef CONFIG_NUMA |
| 38 | |
| 39 | #include <asm/mpspec.h> |
| 40 | |
| 41 | #include <linux/cpumask.h> |
| 42 | |
| 43 | /* Mappings between logical cpu number and node number */ |
| 44 | extern cpumask_t node_2_cpu_mask[]; |
| 45 | extern int cpu_2_node[]; |
| 46 | |
| 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 | } |
| 52 | |
| 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) |
| 56 | |
| 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 | } |
| 62 | |
| 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 | } |
| 69 | |
Andi Kleen | 69e1a33 | 2005-09-12 18:49:24 +0200 | [diff] [blame] | 70 | #define pcibus_to_node(bus) ((long) (bus)->sysdata) |
Christoph Lameter | 8c5a090 | 2005-06-23 00:08:18 -0700 | [diff] [blame] | 71 | #define pcibus_to_cpumask(bus) node_to_cpumask(pcibus_to_node(bus)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 72 | |
| 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, \ |
Siddha, Suresh B | 1a84887 | 2006-10-03 01:14:08 -0700 | [diff] [blame] | 77 | .child = NULL, \ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 78 | .groups = NULL, \ |
| 79 | .min_interval = 8, \ |
| 80 | .max_interval = 32, \ |
| 81 | .busy_factor = 32, \ |
| 82 | .imbalance_pct = 125, \ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 83 | .cache_nice_tries = 1, \ |
Nick Piggin | 7897986 | 2005-06-25 14:57:13 -0700 | [diff] [blame] | 84 | .busy_idx = 3, \ |
| 85 | .idle_idx = 1, \ |
| 86 | .newidle_idx = 2, \ |
| 87 | .wake_idx = 1, \ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 88 | .per_cpu_gain = 100, \ |
| 89 | .flags = SD_LOAD_BALANCE \ |
| 90 | | SD_BALANCE_EXEC \ |
Nick Piggin | 687f166 | 2005-06-25 14:57:21 -0700 | [diff] [blame] | 91 | | SD_BALANCE_FORK \ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 92 | | SD_WAKE_BALANCE, \ |
| 93 | .last_balance = jiffies, \ |
| 94 | .balance_interval = 1, \ |
| 95 | .nr_balance_failed = 0, \ |
| 96 | } |
| 97 | |
| 98 | extern unsigned long node_start_pfn[]; |
| 99 | extern unsigned long node_end_pfn[]; |
| 100 | extern unsigned long node_remap_size[]; |
| 101 | |
| 102 | #define node_has_online_mem(nid) (node_start_pfn[nid] != node_end_pfn[nid]) |
| 103 | |
| 104 | #else /* !CONFIG_NUMA */ |
| 105 | /* |
| 106 | * Other i386 platforms should define their own version of the |
| 107 | * above macros here. |
| 108 | */ |
| 109 | |
| 110 | #include <asm-generic/topology.h> |
| 111 | |
| 112 | #endif /* CONFIG_NUMA */ |
| 113 | |
Siddha, Suresh B | 1e9f28f | 2006-03-27 01:15:22 -0800 | [diff] [blame] | 114 | extern cpumask_t cpu_coregroup_map(int cpu); |
| 115 | |
Siddha, Suresh B | 5c45bf2 | 2006-06-27 02:54:42 -0700 | [diff] [blame] | 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 |
| 120 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 121 | #endif /* _ASM_I386_TOPOLOGY_H */ |