projects / deliverable / linux.git / blame
| Commit | Line | Data |
|---|---|---|
| 867e359b CM |
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 | ||
| 7194988f CM |
47 | /* |
| 48 | * TILE architecture has many cores integrated in one processor, so we need | |
| 49 | * setup bigger balance_interval for both CPU/NODE scheduling domains to | |
| 50 | * reduce process scheduling costs. | |
| 51 | */ | |
| 52 | ||
| 53 | /* sched_domains SD_CPU_INIT for TILE architecture */ | |
| 54 | #define SD_CPU_INIT (struct sched_domain) { \ | |
| 55 | .min_interval = 4, \ | |
| 56 | .max_interval = 128, \ | |
| 57 | .busy_factor = 64, \ | |
| 58 | .imbalance_pct = 125, \ | |
| 59 | .cache_nice_tries = 1, \ | |
| 60 | .busy_idx = 2, \ | |
| 61 | .idle_idx = 1, \ | |
| 62 | .newidle_idx = 0, \ | |
| 63 | .wake_idx = 0, \ | |
| 64 | .forkexec_idx = 0, \ | |
| 65 | \ | |
| 66 | .flags = 1*SD_LOAD_BALANCE \ | |
| 67 | | 1*SD_BALANCE_NEWIDLE \ | |
| 68 | | 1*SD_BALANCE_EXEC \ | |
| 69 | | 1*SD_BALANCE_FORK \ | |
| 70 | | 0*SD_BALANCE_WAKE \ | |
| 71 | | 0*SD_WAKE_AFFINE \ | |
| 72 | | 0*SD_PREFER_LOCAL \ | |
| 73 | | 0*SD_SHARE_CPUPOWER \ | |
| 74 | | 0*SD_SHARE_PKG_RESOURCES \ | |
| 75 | | 0*SD_SERIALIZE \ | |
| 76 | , \ | |
| 77 | .last_balance = jiffies, \ | |
| 78 | .balance_interval = 32, \ | |
| 79 | } | |
| 80 | ||
| 867e359b | 81 | /* sched_domains SD_NODE_INIT for TILE architecture */ |
| 7194988f CM |
82 | #define SD_NODE_INIT (struct sched_domain) { \ |
| 83 | .min_interval = 16, \ | |
| 84 | .max_interval = 512, \ | |
| 85 | .busy_factor = 32, \ | |
| 86 | .imbalance_pct = 125, \ | |
| 87 | .cache_nice_tries = 1, \ | |
| 88 | .busy_idx = 3, \ | |
| 89 | .idle_idx = 1, \ | |
| 90 | .newidle_idx = 2, \ | |
| 91 | .wake_idx = 1, \ | |
| 92 | .flags = 1*SD_LOAD_BALANCE \ | |
| 93 | | 1*SD_BALANCE_NEWIDLE \ | |
| 94 | | 1*SD_BALANCE_EXEC \ | |
| 95 | | 1*SD_BALANCE_FORK \ | |
| 96 | | 0*SD_BALANCE_WAKE \ | |
| 97 | | 0*SD_WAKE_AFFINE \ | |
| 98 | | 0*SD_PREFER_LOCAL \ | |
| 99 | | 0*SD_SHARE_CPUPOWER \ | |
| 100 | | 0*SD_SHARE_PKG_RESOURCES \ | |
| 101 | | 1*SD_SERIALIZE \ | |
| 102 | , \ | |
| 103 | .last_balance = jiffies, \ | |
| 104 | .balance_interval = 128, \ | |
| 867e359b CM |
105 | } |
| 106 | ||
| 107 | /* By definition, we create nodes based on online memory. */ | |
| 108 | #define node_has_online_mem(nid) 1 | |
| 109 | ||
| 110 | #endif /* CONFIG_NUMA */ | |
| 111 | ||
| 112 | #include <asm-generic/topology.h> | |
| 113 | ||
| 114 | #ifdef CONFIG_SMP | |
| 115 | #define topology_physical_package_id(cpu) ((void)(cpu), 0) | |
| 116 | #define topology_core_id(cpu) (cpu) | |
| 117 | #define topology_core_cpumask(cpu) ((void)(cpu), cpu_online_mask) | |
| 118 | #define topology_thread_cpumask(cpu) cpumask_of(cpu) | |
| 119 | ||
| 120 | /* indicates that pointers to the topology struct cpumask maps are valid */ | |
| 121 | #define arch_provides_topology_pointers yes | |
| 122 | #endif | |
| 123 | ||
| 124 | #endif /* _ASM_TILE_TOPOLOGY_H */ |