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. */ 23extern struct cpumask node_2_cpu_mask[]; 24extern char cpu_2_node[]; 25 26/* Returns the number of the node containing CPU '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'. */ 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/* By definition, we create nodes based on online memory. */ 48#define node_has_online_mem(nid) 1 49 50#endif /* CONFIG_NUMA */ 51 52#include <asm-generic/topology.h> 53 54#ifdef CONFIG_SMP 55#define topology_physical_package_id(cpu) ((void)(cpu), 0) 56#define topology_core_id(cpu) (cpu) 57#define topology_core_cpumask(cpu) ((void)(cpu), cpu_online_mask) 58#define topology_sibling_cpumask(cpu) cpumask_of(cpu) 59#endif 60 61#endif /* _ASM_TILE_TOPOLOGY_H */ 62