1 /* 2 * Copyright 2010 Tilera Corporation. All Rights Reserved. 3 * 4 * This program is free software; you can redistribute it and/or 5 * modify it under the terms of the GNU General Public License 6 * as published by the Free Software Foundation, version 2. 7 * 8 * This program is distributed in the hope that it will be useful, but 9 * WITHOUT ANY WARRANTY; without even the implied warranty of 10 * MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or 11 * NON INFRINGEMENT. See the GNU General Public License for 12 * more details. 13 */ 14 15 #ifndef _ASM_TILE_TOPOLOGY_H 16 #define _ASM_TILE_TOPOLOGY_H 17 18 #ifdef CONFIG_NUMA 19 20 #include <linux/cpumask.h> 21 22 /* Mappings between logical cpu number and node number. */ 23 extern struct cpumask node_2_cpu_mask[]; 24 extern char cpu_2_node[]; 25 26 /* Returns the number of the node containing CPU 'cpu'. */ cpu_to_node(int cpu)27static inline int cpu_to_node(int cpu) 28 { 29 return cpu_2_node[cpu]; 30 } 31 32 /* 33 * Returns the number of the node containing Node 'node'. 34 * This architecture is flat, so it is a pretty simple function! 35 */ 36 #define parent_node(node) (node) 37 38 /* Returns a bitmask of CPUs on Node 'node'. */ cpumask_of_node(int node)39static inline const struct cpumask *cpumask_of_node(int node) 40 { 41 return &node_2_cpu_mask[node]; 42 } 43 44 /* For now, use numa node -1 for global allocation. */ 45 #define pcibus_to_node(bus) ((void)(bus), -1) 46 47 #endif /* CONFIG_NUMA */ 48 49 #include <asm-generic/topology.h> 50 51 #ifdef CONFIG_SMP 52 #define topology_physical_package_id(cpu) ((void)(cpu), 0) 53 #define topology_core_id(cpu) (cpu) 54 #define topology_core_cpumask(cpu) ((void)(cpu), cpu_online_mask) 55 #define topology_sibling_cpumask(cpu) cpumask_of(cpu) 56 #endif 57 58 #endif /* _ASM_TILE_TOPOLOGY_H */ 59