| rjw | 1f88458 | 2022-01-06 17:20:42 +0800 | [diff] [blame^] | 1 | /* |
| 2 | * linux/include/asm-generic/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_GENERIC_TOPOLOGY_H |
| 28 | #define _ASM_GENERIC_TOPOLOGY_H |
| 29 | |
| 30 | #ifndef CONFIG_NUMA |
| 31 | |
| 32 | /* Other architectures wishing to use this simple topology API should fill |
| 33 | in the below functions as appropriate in their own <asm/topology.h> file. */ |
| 34 | #ifndef cpu_to_node |
| 35 | #define cpu_to_node(cpu) ((void)(cpu),0) |
| 36 | #endif |
| 37 | #ifndef set_numa_node |
| 38 | #define set_numa_node(node) |
| 39 | #endif |
| 40 | #ifndef set_cpu_numa_node |
| 41 | #define set_cpu_numa_node(cpu, node) |
| 42 | #endif |
| 43 | #ifndef cpu_to_mem |
| 44 | #define cpu_to_mem(cpu) ((void)(cpu),0) |
| 45 | #endif |
| 46 | |
| 47 | #ifndef parent_node |
| 48 | #define parent_node(node) ((void)(node),0) |
| 49 | #endif |
| 50 | #ifndef cpumask_of_node |
| 51 | #ifdef CONFIG_NEED_MULTIPLE_NODES |
| 52 | #define cpumask_of_node(node) ((node) == 0 ? cpu_online_mask : cpu_none_mask) |
| 53 | #else |
| 54 | #define cpumask_of_node(node) ((void)(node), cpu_online_mask) |
| 55 | #endif |
| 56 | #endif |
| 57 | #ifndef pcibus_to_node |
| 58 | #define pcibus_to_node(bus) ((void)(bus), -1) |
| 59 | #endif |
| 60 | |
| 61 | #ifndef cpumask_of_pcibus |
| 62 | #define cpumask_of_pcibus(bus) (pcibus_to_node(bus) == -1 ? \ |
| 63 | cpu_all_mask : \ |
| 64 | cpumask_of_node(pcibus_to_node(bus))) |
| 65 | #endif |
| 66 | |
| 67 | #endif /* CONFIG_NUMA */ |
| 68 | |
| 69 | #if !defined(CONFIG_NUMA) || !defined(CONFIG_HAVE_MEMORYLESS_NODES) |
| 70 | |
| 71 | #ifndef set_numa_mem |
| 72 | #define set_numa_mem(node) |
| 73 | #endif |
| 74 | #ifndef set_cpu_numa_mem |
| 75 | #define set_cpu_numa_mem(cpu, node) |
| 76 | #endif |
| 77 | |
| 78 | #endif /* !CONFIG_NUMA || !CONFIG_HAVE_MEMORYLESS_NODES */ |
| 79 | |
| 80 | #endif /* _ASM_GENERIC_TOPOLOGY_H */ |