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/* * linux/include/asm-i386/topology.h * * Written by: Matthew Dobson, IBM Corporation * * Copyright (C) 2002, IBM Corp. * * All rights reserved. * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 2 of the License, or * (at your option) any later version. * * This program is distributed in the hope that it will be useful, but * WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or * NON INFRINGEMENT. See the GNU General Public License for more * details. * * You should have received a copy of the GNU General Public License * along with this program; if not, write to the Free Software * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. * * Send feedback to <colpatch@us.ibm.com> */ #ifndef _ASM_I386_TOPOLOGY_H #define _ASM_I386_TOPOLOGY_H #ifdef CONFIG_X86_HT #define topology_physical_package_id(cpu) \ (phys_proc_id[cpu] == BAD_APICID ? -1 : phys_proc_id[cpu]) #define topology_core_id(cpu) \ (cpu_core_id[cpu] == BAD_APICID ? 0 : cpu_core_id[cpu]) #define topology_core_siblings(cpu) (cpu_core_map[cpu]) #define topology_thread_siblings(cpu) (cpu_sibling_map[cpu]) #endif #ifdef CONFIG_NUMA #include <asm/mpspec.h> #include <linux/cpumask.h> /* Mappings between logical cpu number and node number */ extern cpumask_t node_2_cpu_mask[]; extern int cpu_2_node[]; /* Returns the number of the node containing CPU 'cpu' */ static inline int cpu_to_node(int cpu) { return cpu_2_node[cpu]; } /* Returns the number of the node containing Node 'node'. This architecture is flat, so it is a pretty simple function! */ #define parent_node(node) (node) /* Returns a bitmask of CPUs on Node 'node'. */ static inline cpumask_t node_to_cpumask(int node) { return node_2_cpu_mask[node]; } /* Returns the number of the first CPU on Node 'node'. */ static inline int node_to_first_cpu(int node) { cpumask_t mask = node_to_cpumask(node); return first_cpu(mask); } #define pcibus_to_node(bus) ((long) (bus)->sysdata) #define pcibus_to_cpumask(bus) node_to_cpumask(pcibus_to_node(bus)) /* sched_domains SD_NODE_INIT for NUMAQ machines */ #define SD_NODE_INIT (struct sched_domain) { \ .span = CPU_MASK_NONE, \ .parent = NULL, \ .groups = NULL, \ .min_interval = 8, \ .max_interval = 32, \ .busy_factor = 32, \ .imbalance_pct = 125, \ .cache_nice_tries = 1, \ .busy_idx = 3, \ .idle_idx = 1, \ .newidle_idx = 2, \ .wake_idx = 1, \ .per_cpu_gain = 100, \ .flags = SD_LOAD_BALANCE \ | SD_BALANCE_EXEC \ | SD_BALANCE_FORK \ | SD_WAKE_BALANCE, \ .last_balance = jiffies, \ .balance_interval = 1, \ .nr_balance_failed = 0, \ } extern unsigned long node_start_pfn[]; extern unsigned long node_end_pfn[]; extern unsigned long node_remap_size[]; #define node_has_online_mem(nid) (node_start_pfn[nid] != node_end_pfn[nid]) #else /* !CONFIG_NUMA */ /* * Other i386 platforms should define their own version of the * above macros here. */ #include <asm-generic/topology.h> #endif /* CONFIG_NUMA */ #endif /* _ASM_I386_TOPOLOGY_H */