projects / linux-2.6-block.git / blame
| Commit | Line | Data |
|---|---|---|
| 05a11784 PM |
1 | /* |
| 2 | * arch/sh/kernel/topology.c | |
| 3 | * | |
| 4 | * Copyright (C) 2007 Paul Mundt | |
| 5 | * | |
| 6 | * This file is subject to the terms and conditions of the GNU General Public | |
| 7 | * License. See the file "COPYING" in the main directory of this archive | |
| 8 | * for more details. | |
| 9 | */ | |
| 7a302a96 PM |
10 | #include <linux/cpu.h> |
| 11 | #include <linux/cpumask.h> | |
| 12 | #include <linux/init.h> | |
| 13 | #include <linux/percpu.h> | |
| d22d9b3a PM |
14 | #include <linux/node.h> |
| 15 | #include <linux/nodemask.h> | |
| 7a302a96 PM |
16 | |
| 17 | static DEFINE_PER_CPU(struct cpu, cpu_devices); | |
| 18 | ||
| 896f0c0e PM |
19 | cpumask_t cpu_core_map[NR_CPUS]; |
| 20 | ||
| 21 | static cpumask_t cpu_coregroup_map(unsigned int cpu) | |
| 22 | { | |
| 23 | /* | |
| 24 | * Presently all SH-X3 SMP cores are multi-cores, so just keep it | |
| 25 | * simple until we have a method for determining topology.. | |
| 26 | */ | |
| 27 | return cpu_possible_map; | |
| 28 | } | |
| 29 | ||
| 30 | const struct cpumask *cpu_coregroup_mask(unsigned int cpu) | |
| 31 | { | |
| 32 | return &cpu_core_map[cpu]; | |
| 33 | } | |
| 34 | ||
| 35 | int arch_update_cpu_topology(void) | |
| 36 | { | |
| 37 | unsigned int cpu; | |
| 38 | ||
| 39 | for_each_possible_cpu(cpu) | |
| 40 | cpu_core_map[cpu] = cpu_coregroup_map(cpu); | |
| 41 | ||
| 42 | return 0; | |
| 43 | } | |
| 44 | ||
| 7a302a96 PM |
45 | static int __init topology_init(void) |
| 46 | { | |
| 47 | int i, ret; | |
| 48 | ||
| d22d9b3a PM |
49 | #ifdef CONFIG_NEED_MULTIPLE_NODES |
| 50 | for_each_online_node(i) | |
| 51 | register_one_node(i); | |
| 52 | #endif | |
| 53 | ||
| 7a302a96 PM |
54 | for_each_present_cpu(i) { |
| 55 | ret = register_cpu(&per_cpu(cpu_devices, i), i); | |
| 56 | if (unlikely(ret)) | |
| 57 | printk(KERN_WARNING "%s: register_cpu %d failed (%d)\n", | |
| 866e6b9e | 58 | __func__, i, ret); |
| 7a302a96 PM |
59 | } |
| 60 | ||
| 05a11784 PM |
61 | #if defined(CONFIG_NUMA) && !defined(CONFIG_SMP) |
| 62 | /* | |
| 63 | * In the UP case, make sure the CPU association is still | |
| 64 | * registered under each node. Without this, sysfs fails | |
| 65 | * to make the connection between nodes other than node0 | |
| 66 | * and cpu0. | |
| 67 | */ | |
| 68 | for_each_online_node(i) | |
| 69 | if (i != numa_node_id()) | |
| 70 | register_cpu_under_node(raw_smp_processor_id(), i); | |
| 71 | #endif | |
| 72 | ||
| 7a302a96 PM |
73 | return 0; |
| 74 | } | |
| 75 | subsys_initcall(topology_init); |