forked from Qortal/Brooklyn
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
53 lines
1.0 KiB
53 lines
1.0 KiB
// SPDX-License-Identifier: GPL-2.0 |
|
#include <linux/cpu.h> |
|
#include <linux/cpumask.h> |
|
#include <linux/init.h> |
|
#include <linux/node.h> |
|
#include <linux/nodemask.h> |
|
#include <linux/percpu.h> |
|
#include <asm/bootinfo.h> |
|
|
|
static DEFINE_PER_CPU(struct cpu, cpu_devices); |
|
|
|
#ifdef CONFIG_HOTPLUG_CPU |
|
int arch_register_cpu(int cpu) |
|
{ |
|
int ret; |
|
struct cpu *c = &per_cpu(cpu_devices, cpu); |
|
|
|
c->hotpluggable = 1; |
|
ret = register_cpu(c, cpu); |
|
if (ret < 0) |
|
pr_warn("register_cpu %d failed (%d)\n", cpu, ret); |
|
|
|
return ret; |
|
} |
|
EXPORT_SYMBOL(arch_register_cpu); |
|
|
|
void arch_unregister_cpu(int cpu) |
|
{ |
|
struct cpu *c = &per_cpu(cpu_devices, cpu); |
|
|
|
c->hotpluggable = 0; |
|
unregister_cpu(c); |
|
} |
|
EXPORT_SYMBOL(arch_unregister_cpu); |
|
#endif |
|
|
|
static int __init topology_init(void) |
|
{ |
|
int i, ret; |
|
|
|
for_each_present_cpu(i) { |
|
struct cpu *c = &per_cpu(cpu_devices, i); |
|
|
|
c->hotpluggable = !io_master(i); |
|
ret = register_cpu(c, i); |
|
if (ret < 0) |
|
pr_warn("topology_init: register_cpu %d failed (%d)\n", i, ret); |
|
} |
|
|
|
return 0; |
|
} |
|
|
|
subsys_initcall(topology_init);
|
|
|