cregit-Linux how code gets into the kernel

Release 4.14 arch/sh/kernel/topology.c

Directory: arch/sh/kernel
/*
 * arch/sh/kernel/topology.c
 *
 *  Copyright (C) 2007  Paul Mundt
 *
 * This file is subject to the terms and conditions of the GNU General Public
 * License.  See the file "COPYING" in the main directory of this archive
 * for more details.
 */
#include <linux/cpu.h>
#include <linux/cpumask.h>
#include <linux/init.h>
#include <linux/percpu.h>
#include <linux/topology.h>
#include <linux/node.h>
#include <linux/nodemask.h>
#include <linux/export.h>

static DEFINE_PER_CPU(struct cpu, cpu_devices);


cpumask_t cpu_core_map[NR_CPUS];

EXPORT_SYMBOL(cpu_core_map);


static cpumask_t cpu_coregroup_map(int cpu) { /* * Presently all SH-X3 SMP cores are multi-cores, so just keep it * simple until we have a method for determining topology.. */ return *cpu_possible_mask; }

Contributors

PersonTokensPropCommitsCommitProp
Paul Mundt1285.71%150.00%
Rusty Russell214.29%150.00%
Total14100.00%2100.00%


const struct cpumask *cpu_coregroup_mask(int cpu) { return &cpu_core_map[cpu]; }

Contributors

PersonTokensPropCommitsCommitProp
Paul Mundt18100.00%1100.00%
Total18100.00%1100.00%


int arch_update_cpu_topology(void) { unsigned int cpu; for_each_possible_cpu(cpu) cpu_core_map[cpu] = cpu_coregroup_map(cpu); return 0; }

Contributors

PersonTokensPropCommitsCommitProp
Paul Mundt28100.00%1100.00%
Total28100.00%1100.00%


static int __init topology_init(void) { int i, ret; #ifdef CONFIG_NEED_MULTIPLE_NODES for_each_online_node(i) register_one_node(i); #endif for_each_present_cpu(i) { struct cpu *c = &per_cpu(cpu_devices, i); c->hotpluggable = 1; ret = register_cpu(c, i); if (unlikely(ret)) printk(KERN_WARNING "%s: register_cpu %d failed (%d)\n", __func__, i, ret); } #if defined(CONFIG_NUMA) && !defined(CONFIG_SMP) /* * In the UP case, make sure the CPU association is still * registered under each node. Without this, sysfs fails * to make the connection between nodes other than node0 * and cpu0. */ for_each_online_node(i) if (i != numa_node_id()) register_cpu_under_node(raw_smp_processor_id(), i); #endif return 0; }

Contributors

PersonTokensPropCommitsCommitProp
Paul Mundt11799.15%480.00%
Harvey Harrison10.85%120.00%
Total118100.00%5100.00%

subsys_initcall(topology_init);

Overall Contributors

PersonTokensPropCommitsCommitProp
Paul Mundt21493.86%550.00%
Aurelien Jarno52.19%110.00%
Paul Gortmaker31.32%110.00%
Nobuhiro Iwamatsu31.32%110.00%
Rusty Russell20.88%110.00%
Harvey Harrison10.44%110.00%
Total228100.00%10100.00%
Directory: arch/sh/kernel
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