| Chris Metcalf | 867e359 | 2010-05-28 23:09:12 -0400 | [diff] [blame] | 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'. */ |
| 27 | static 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'. */ |
| 39 | static 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 | /* sched_domains SD_NODE_INIT for TILE architecture */ |
| 48 | #define SD_NODE_INIT (struct sched_domain) { \ |
| 49 | .min_interval = 8, \ |
| 50 | .max_interval = 32, \ |
| 51 | .busy_factor = 32, \ |
| 52 | .imbalance_pct = 125, \ |
| 53 | .cache_nice_tries = 1, \ |
| 54 | .busy_idx = 3, \ |
| 55 | .idle_idx = 1, \ |
| 56 | .newidle_idx = 2, \ |
| 57 | .wake_idx = 1, \ |
| 58 | .flags = SD_LOAD_BALANCE \ |
| 59 | | SD_BALANCE_NEWIDLE \ |
| 60 | | SD_BALANCE_EXEC \ |
| 61 | | SD_BALANCE_FORK \ |
| 62 | | SD_WAKE_AFFINE \ |
| 63 | | SD_SERIALIZE, \ |
| 64 | .last_balance = jiffies, \ |
| 65 | .balance_interval = 1, \ |
| 66 | } |
| 67 | |
| 68 | /* By definition, we create nodes based on online memory. */ |
| 69 | #define node_has_online_mem(nid) 1 |
| 70 | |
| 71 | #endif /* CONFIG_NUMA */ |
| 72 | |
| 73 | #include <asm-generic/topology.h> |
| 74 | |
| 75 | #ifdef CONFIG_SMP |
| 76 | #define topology_physical_package_id(cpu) ((void)(cpu), 0) |
| 77 | #define topology_core_id(cpu) (cpu) |
| 78 | #define topology_core_cpumask(cpu) ((void)(cpu), cpu_online_mask) |
| 79 | #define topology_thread_cpumask(cpu) cpumask_of(cpu) |
| 80 | |
| 81 | /* indicates that pointers to the topology struct cpumask maps are valid */ |
| 82 | #define arch_provides_topology_pointers yes |
| 83 | #endif |
| 84 | |
| 85 | #endif /* _ASM_TILE_TOPOLOGY_H */ |