static int acpi_processor_get_info(struct acpi_device *device)
{
	acpi_status status = 0;
	union acpi_object object = { 0 };
	struct acpi_buffer buffer = { sizeof(union acpi_object), &object };
	struct acpi_processor *pr;
	int cpu_index, device_declaration = 0;
	static int cpu0_initialized;

	pr = acpi_driver_data(device);
	if (!pr)
		return -EINVAL;

	if (num_online_cpus() > 1)
		errata.smp = TRUE;

	acpi_processor_errata(pr);

	/*
	 * Check to see if we have bus mastering arbitration control.  This
	 * is required for proper C3 usage (to maintain cache coherency).
	 */
	if (acpi_gbl_FADT.pm2_control_block && acpi_gbl_FADT.pm2_control_length) {
		pr->flags.bm_control = 1;
		ACPI_DEBUG_PRINT((ACPI_DB_INFO,
				  "Bus mastering arbitration control present\n"));
	} else
		ACPI_DEBUG_PRINT((ACPI_DB_INFO,
				  "No bus mastering arbitration control\n"));

	if (!strcmp(acpi_device_hid(device), ACPI_PROCESSOR_HID)) {
		/*
		 * Declared with "Device" statement; match _UID.
		 * Note that we don't handle string _UIDs yet.
		 */
		unsigned long long value;
		status = acpi_evaluate_integer(pr->handle, METHOD_NAME__UID,
						NULL, &value);
		if (ACPI_FAILURE(status)) {
			printk(KERN_ERR PREFIX
			    "Evaluating processor _UID [%#x]\n", status);
			return -ENODEV;
		}
		device_declaration = 1;
		pr->acpi_id = value;
	} else {
		/* Declared with "Processor" statement; match ProcessorID */
		status = acpi_evaluate_object(pr->handle, NULL, NULL, &buffer);
		if (ACPI_FAILURE(status)) {
			printk(KERN_ERR PREFIX "Evaluating processor object\n");
			return -ENODEV;
		}

		/*
		 * TBD: Synch processor ID (via LAPIC/LSAPIC structures) on SMP.
		 *      >>> 'acpi_get_processor_id(acpi_id, &id)' in
		 *      arch/xxx/acpi.c
		 */
		pr->acpi_id = object.processor.proc_id;
	}
	cpu_index = get_cpu_id(pr->handle, device_declaration, pr->acpi_id);

	/* Handle UP system running SMP kernel, with no LAPIC in MADT */
	if (!cpu0_initialized && (cpu_index == -1) &&
	    (num_online_cpus() == 1)) {
		cpu_index = 0;
	}

	cpu0_initialized = 1;

	pr->id = cpu_index;

	/*
	 *  Extra Processor objects may be enumerated on MP systems with
	 *  less than the max # of CPUs. They should be ignored _iff
	 *  they are physically not present.
	 */
	if (pr->id == -1) {
		if (ACPI_FAILURE
		    (acpi_processor_hotadd_init(pr->handle, &pr->id))) {
			return -ENODEV;
		}
	}

	ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Processor [%d:%d]\n", pr->id,
			  pr->acpi_id));

	if (!object.processor.pblk_address)
		ACPI_DEBUG_PRINT((ACPI_DB_INFO, "No PBLK (NULL address)\n"));
	else if (object.processor.pblk_length != 6)
		printk(KERN_ERR PREFIX "Invalid PBLK length [%d]\n",
			    object.processor.pblk_length);
	else {
		pr->throttling.address = object.processor.pblk_address;
		pr->throttling.duty_offset = acpi_gbl_FADT.duty_offset;
		pr->throttling.duty_width = acpi_gbl_FADT.duty_width;

		pr->pblk = object.processor.pblk_address;

		/*
		 * We don't care about error returns - we just try to mark
		 * these reserved so that nobody else is confused into thinking
		 * that this region might be unused..
		 *
		 * (In particular, allocating the IO range for Cardbus)
		 */
		request_region(pr->throttling.address, 6, "ACPI CPU throttle");
	}

	/*
	 * If ACPI describes a slot number for this CPU, we can use it
	 * ensure we get the right value in the "physical id" field
	 * of /proc/cpuinfo
	 */
	status = acpi_evaluate_object(pr->handle, "_SUN", NULL, &buffer);
	if (ACPI_SUCCESS(status))
		arch_fix_phys_package_id(pr->id, object.integer.value);

	return 0;
}
static int acpi_processor_get_info(struct acpi_device *device)
{
	union acpi_object object = { 0 };
	struct acpi_buffer buffer = { sizeof(union acpi_object), &object };
	struct acpi_processor *pr = acpi_driver_data(device);
	int cpu_index, device_declaration = 0;
	acpi_status status = AE_OK;
	static int cpu0_initialized;
	unsigned long long value;

	acpi_processor_errata();

	/*
	 * Check to see if we have bus mastering arbitration control.  This
	 * is required for proper C3 usage (to maintain cache coherency).
	 */
	if (acpi_gbl_FADT.pm2_control_block && acpi_gbl_FADT.pm2_control_length) {
		pr->flags.bm_control = 1;
		ACPI_DEBUG_PRINT((ACPI_DB_INFO,
				  "Bus mastering arbitration control present\n"));
	} else
		ACPI_DEBUG_PRINT((ACPI_DB_INFO,
				  "No bus mastering arbitration control\n"));

	if (!strcmp(acpi_device_hid(device), ACPI_PROCESSOR_OBJECT_HID)) {
		/* Declared with "Processor" statement; match ProcessorID */
		status = acpi_evaluate_object(pr->handle, NULL, NULL, &buffer);
		if (ACPI_FAILURE(status)) {
			dev_err(&device->dev,
				"Failed to evaluate processor object (0x%x)\n",
				status);
			return -ENODEV;
		}

		pr->acpi_id = object.processor.proc_id;
	} else {
		/*
		 * Declared with "Device" statement; match _UID.
		 * Note that we don't handle string _UIDs yet.
		 */
		status = acpi_evaluate_integer(pr->handle, METHOD_NAME__UID,
						NULL, &value);
		if (ACPI_FAILURE(status)) {
			dev_err(&device->dev,
				"Failed to evaluate processor _UID (0x%x)\n",
				status);
			return -ENODEV;
		}
		device_declaration = 1;
		pr->acpi_id = value;
	}
	pr->apic_id = acpi_get_apicid(pr->handle, device_declaration,
					pr->acpi_id);
	cpu_index = acpi_map_cpuid(pr->apic_id, pr->acpi_id);

	/* Handle UP system running SMP kernel, with no LAPIC in MADT */
	if (!cpu0_initialized && (cpu_index == -1) &&
	    (num_online_cpus() == 1)) {
		cpu_index = 0;
	}

	cpu0_initialized = 1;

	pr->id = cpu_index;

	/*
	 *  Extra Processor objects may be enumerated on MP systems with
	 *  less than the max # of CPUs. They should be ignored _iff
	 *  they are physically not present.
	 */
	if (pr->id == -1) {
		int ret = acpi_processor_hotadd_init(pr);
		if (ret)
			return ret;
	}
	/*
	 * On some boxes several processors use the same processor bus id.
	 * But they are located in different scope. For example:
	 * \_SB.SCK0.CPU0
	 * \_SB.SCK1.CPU0
	 * Rename the processor device bus id. And the new bus id will be
	 * generated as the following format:
	 * CPU+CPU ID.
	 */
	sprintf(acpi_device_bid(device), "CPU%X", pr->id);
	ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Processor [%d:%d]\n", pr->id,
			  pr->acpi_id));

	if (!object.processor.pblk_address)
		ACPI_DEBUG_PRINT((ACPI_DB_INFO, "No PBLK (NULL address)\n"));
	else if (object.processor.pblk_length != 6)
		dev_err(&device->dev, "Invalid PBLK length [%d]\n",
			    object.processor.pblk_length);
	else {
		pr->throttling.address = object.processor.pblk_address;
		pr->throttling.duty_offset = acpi_gbl_FADT.duty_offset;
		pr->throttling.duty_width = acpi_gbl_FADT.duty_width;

		pr->pblk = object.processor.pblk_address;

		/*
		 * We don't care about error returns - we just try to mark
		 * these reserved so that nobody else is confused into thinking
		 * that this region might be unused..
		 *
		 * (In particular, allocating the IO range for Cardbus)
		 */
		request_region(pr->throttling.address, 6, "ACPI CPU throttle");
	}

	/*
	 * If ACPI describes a slot number for this CPU, we can use it to
	 * ensure we get the right value in the "physical id" field
	 * of /proc/cpuinfo
	 */
	status = acpi_evaluate_integer(pr->handle, "_SUN", NULL, &value);
	if (ACPI_SUCCESS(status))
		arch_fix_phys_package_id(pr->id, value);

	return 0;
}
static int acpi_processor_get_info(struct acpi_device *device)
{
	acpi_status status = 0;
	union acpi_object object = { 0 };
	struct acpi_buffer buffer = { sizeof(union acpi_object), &object };
	struct acpi_processor *pr;
	int cpu_index, device_declaration = 0;
	static int cpu0_initialized;

	pr = acpi_driver_data(device);
	if (!pr)
		return -EINVAL;

	if (num_online_cpus() > 1)
		errata.smp = TRUE;

	acpi_processor_errata(pr);

	if (acpi_gbl_FADT.pm2_control_block && acpi_gbl_FADT.pm2_control_length) {
		pr->flags.bm_control = 1;
		ACPI_DEBUG_PRINT((ACPI_DB_INFO,
				  "Bus mastering arbitration control present\n"));
	} else
		ACPI_DEBUG_PRINT((ACPI_DB_INFO,
				  "No bus mastering arbitration control\n"));

	if (!strcmp(acpi_device_hid(device), ACPI_PROCESSOR_OBJECT_HID)) {
		
		status = acpi_evaluate_object(pr->handle, NULL, NULL, &buffer);
		if (ACPI_FAILURE(status)) {
			printk(KERN_ERR PREFIX "Evaluating processor object\n");
			return -ENODEV;
		}

		pr->acpi_id = object.processor.proc_id;
	} else {
		unsigned long long value;
		status = acpi_evaluate_integer(pr->handle, METHOD_NAME__UID,
						NULL, &value);
		if (ACPI_FAILURE(status)) {
			printk(KERN_ERR PREFIX
			    "Evaluating processor _UID [%#x]\n", status);
			return -ENODEV;
		}
		device_declaration = 1;
		pr->acpi_id = value;
	}
	cpu_index = acpi_get_cpuid(pr->handle, device_declaration, pr->acpi_id);

	
	if (!cpu0_initialized && (cpu_index == -1) &&
	    (num_online_cpus() == 1)) {
		cpu_index = 0;
	}

	cpu0_initialized = 1;

	pr->id = cpu_index;

	if (pr->id == -1) {
		if (ACPI_FAILURE(acpi_processor_hotadd_init(pr)))
			return -ENODEV;
	}
	sprintf(acpi_device_bid(device), "CPU%X", pr->id);
	ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Processor [%d:%d]\n", pr->id,
			  pr->acpi_id));

	if (!object.processor.pblk_address)
		ACPI_DEBUG_PRINT((ACPI_DB_INFO, "No PBLK (NULL address)\n"));
	else if (object.processor.pblk_length != 6)
		printk(KERN_ERR PREFIX "Invalid PBLK length [%d]\n",
			    object.processor.pblk_length);
	else {
		pr->throttling.address = object.processor.pblk_address;
		pr->throttling.duty_offset = acpi_gbl_FADT.duty_offset;
		pr->throttling.duty_width = acpi_gbl_FADT.duty_width;

		pr->pblk = object.processor.pblk_address;

		request_region(pr->throttling.address, 6, "ACPI CPU throttle");
	}

	status = acpi_evaluate_object(pr->handle, "_SUN", NULL, &buffer);
	if (ACPI_SUCCESS(status))
		arch_fix_phys_package_id(pr->id, object.integer.value);

	return 0;
}