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Diffstat (limited to 'arch/x86/include/asm/topology.h')
-rw-r--r-- | arch/x86/include/asm/topology.h | 138 |
1 files changed, 138 insertions, 0 deletions
diff --git a/arch/x86/include/asm/topology.h b/arch/x86/include/asm/topology.h new file mode 100644 index 000000000..0e8f04f2c --- /dev/null +++ b/arch/x86/include/asm/topology.h @@ -0,0 +1,138 @@ +/* + * 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_X86_TOPOLOGY_H +#define _ASM_X86_TOPOLOGY_H + +#ifdef CONFIG_X86_32 +# ifdef CONFIG_X86_HT +# define ENABLE_TOPO_DEFINES +# endif +#else +# ifdef CONFIG_SMP +# define ENABLE_TOPO_DEFINES +# endif +#endif + +/* + * to preserve the visibility of NUMA_NO_NODE definition, + * moved to there from here. May be used independent of + * CONFIG_NUMA. + */ +#include <linux/numa.h> + +#ifdef CONFIG_NUMA +#include <linux/cpumask.h> + +#include <asm/mpspec.h> + +/* Mappings between logical cpu number and node number */ +DECLARE_EARLY_PER_CPU(int, x86_cpu_to_node_map); + +#ifdef CONFIG_DEBUG_PER_CPU_MAPS +/* + * override generic percpu implementation of cpu_to_node + */ +extern int __cpu_to_node(int cpu); +#define cpu_to_node __cpu_to_node + +extern int early_cpu_to_node(int cpu); + +#else /* !CONFIG_DEBUG_PER_CPU_MAPS */ + +/* Same function but used if called before per_cpu areas are setup */ +static inline int early_cpu_to_node(int cpu) +{ + return early_per_cpu(x86_cpu_to_node_map, cpu); +} + +#endif /* !CONFIG_DEBUG_PER_CPU_MAPS */ + +/* Mappings between node number and cpus on that node. */ +extern cpumask_var_t node_to_cpumask_map[MAX_NUMNODES]; + +#ifdef CONFIG_DEBUG_PER_CPU_MAPS +extern const struct cpumask *cpumask_of_node(int node); +#else +/* Returns a pointer to the cpumask of CPUs on Node 'node'. */ +static inline const struct cpumask *cpumask_of_node(int node) +{ + return node_to_cpumask_map[node]; +} +#endif + +extern void setup_node_to_cpumask_map(void); + +/* + * 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) + +#define pcibus_to_node(bus) __pcibus_to_node(bus) + +extern int __node_distance(int, int); +#define node_distance(a, b) __node_distance(a, b) + +#else /* !CONFIG_NUMA */ + +static inline int numa_node_id(void) +{ + return 0; +} +/* + * indicate override: + */ +#define numa_node_id numa_node_id + +static inline int early_cpu_to_node(int cpu) +{ + return 0; +} + +static inline void setup_node_to_cpumask_map(void) { } + +#endif + +#include <asm-generic/topology.h> + +extern const struct cpumask *cpu_coregroup_mask(int cpu); + +#define topology_physical_package_id(cpu) (cpu_data(cpu).phys_proc_id) +#define topology_core_id(cpu) (cpu_data(cpu).cpu_core_id) + +#ifdef ENABLE_TOPO_DEFINES +#define topology_core_cpumask(cpu) (per_cpu(cpu_core_map, cpu)) +#define topology_thread_cpumask(cpu) (per_cpu(cpu_sibling_map, cpu)) +#endif + +static inline void arch_fix_phys_package_id(int num, u32 slot) +{ +} + +struct pci_bus; +int x86_pci_root_bus_node(int bus); +void x86_pci_root_bus_resources(int bus, struct list_head *resources); + +#endif /* _ASM_X86_TOPOLOGY_H */ |