drivers/acpi/acpi_processor.c

187 static int acpi_processor_hotadd_init(struct acpi_processor *pr)
193 	if (invalid_phys_cpuid(pr->phys_id))
196 	status = acpi_evaluate_integer(pr->handle, "_STA", NULL, &sta);
203 	ret = acpi_map_cpu(pr->handle, pr->phys_id, pr->acpi_id, &pr->id);
207 	ret = arch_register_cpu(pr->id);
209 		acpi_unmap_cpu(pr->id);
218 	pr_info("CPU%d has been hot-added\n", pr->id);
219 	pr->flags.need_hotplug_init = 1;
227 static inline int acpi_processor_hotadd_init(struct acpi_processor *pr)
237 	struct acpi_processor *pr = acpi_driver_data(device);
250 		pr->flags.bm_control = 1;
257 		status = acpi_evaluate_object(pr->handle, NULL, NULL, &buffer);
265 		pr->acpi_id = object.processor.proc_id;
270 		status = acpi_evaluate_integer(pr->handle, METHOD_NAME__UID,
279 		pr->acpi_id = value;
282 	if (acpi_duplicate_processor_id(pr->acpi_id)) {
283 		if (pr->acpi_id == 0xff)
289 				pr->acpi_id);
293 	pr->phys_id = acpi_get_phys_id(pr->handle, device_declaration,
294 					pr->acpi_id);
295 	if (invalid_phys_cpuid(pr->phys_id))
298 	pr->id = acpi_map_cpuid(pr->phys_id, pr->acpi_id);
305 		if (!acpi_has_cpu_in_madt() && invalid_logical_cpuid(pr->id) &&
307 			pr->id = 0;
313 		if (acpi_has_method(pr->handle, "_PCT"))
325 	if (invalid_logical_cpuid(pr->id) || !cpu_present(pr->id)) {
326 		int ret = acpi_processor_hotadd_init(pr);
341 	sprintf(acpi_device_bid(device), "CPU%X", pr->id);
342 	dev_dbg(&device->dev, "Processor [%d:%d]\n", pr->id, pr->acpi_id);
350 		pr->throttling.address = object.processor.pblk_address;
351 		pr->throttling.duty_offset = acpi_gbl_FADT.duty_offset;
352 		pr->throttling.duty_width = acpi_gbl_FADT.duty_width;
354 		pr->pblk = object.processor.pblk_address;
362 	status = acpi_evaluate_integer(pr->handle, "_SUN", NULL, &value);
364 		arch_fix_phys_package_id(pr->id, value);
380 	struct acpi_processor *pr;
387 	pr = kzalloc(sizeof(struct acpi_processor), GFP_KERNEL);
388 	if (!pr)
391 	if (!zalloc_cpumask_var(&pr->throttling.shared_cpu_map, GFP_KERNEL)) {
396 	pr->handle = device->handle;
399 	device->driver_data = pr;
405 	BUG_ON(pr->id >= nr_cpu_ids);
412 	if (per_cpu(processor_device_array, pr->id) != NULL &&
413 	    per_cpu(processor_device_array, pr->id) != device) {
416 			pr->id);
424 	per_cpu(processor_device_array, pr->id) = device;
425 	per_cpu(processors, pr->id) = pr;
427 	dev = get_cpu_device(pr->id);
437 	pr->dev = dev;
447 	free_cpumask_var(pr->throttling.shared_cpu_map);
449 	per_cpu(processors, pr->id) = NULL;
451 	kfree(pr);
459 	struct acpi_processor *pr;
464 	pr = acpi_driver_data(device);
465 	if (pr->id >= nr_cpu_ids)
476 	device_release_driver(pr->dev);
477 	acpi_unbind_one(pr->dev);
480 	per_cpu(processor_device_array, pr->id) = NULL;
481 	per_cpu(processors, pr->id) = NULL;
487 	arch_unregister_cpu(pr->id);
488 	acpi_unmap_cpu(pr->id);
493 	try_offline_node(cpu_to_node(pr->id));
496 	free_cpumask_var(pr->throttling.shared_cpu_map);
497 	kfree(pr);