int __ref cpu_down(unsigned int cpu)
{
- int err = 0;
+ int err;
+ err = stop_machine_create();
+ if (err)
+ return err;
cpu_maps_update_begin();
if (cpu_hotplug_disabled) {
goto out;
}
- cpu_clear(cpu, cpu_active_map);
+ set_cpu_active(cpu, false);
/*
* Make sure the all cpus did the reschedule and are not
err = _cpu_down(cpu, 0);
if (cpu_online(cpu))
- cpu_set(cpu, cpu_active_map);
+ set_cpu_active(cpu, true);
out:
cpu_maps_update_done();
+ stop_machine_destroy();
return err;
}
EXPORT_SYMBOL(cpu_down);
goto out_notify;
BUG_ON(!cpu_online(cpu));
- cpu_set(cpu, cpu_active_map);
+ set_cpu_active(cpu, true);
/* Now call notifier in preparation. */
raw_notifier_call_chain(&cpu_chain, CPU_ONLINE | mod, hcpu);
int disable_nonboot_cpus(void)
{
- int cpu, first_cpu, error = 0;
+ int cpu, first_cpu, error;
+ error = stop_machine_create();
+ if (error)
+ return error;
cpu_maps_update_begin();
first_cpu = cpumask_first(cpu_online_mask);
/* We take down all of the non-boot CPUs in one shot to avoid races
printk(KERN_ERR "Non-boot CPUs are not disabled\n");
}
cpu_maps_update_done();
+ stop_machine_destroy();
return error;
}