C++ (Cpp) acpi_processor_get_performance_states Beispiele

Beispiel #1

Datei: processor_perflib.c Projekt: mahyarmd/unifi-gpl

static int acpi_processor_get_performance_info(struct acpi_processor *pr)
{
	int result = 0;
	acpi_status status = AE_OK;
	acpi_handle handle = NULL;

	ACPI_FUNCTION_TRACE("acpi_processor_get_performance_info");

	if (!pr || !pr->performance || !pr->handle)
		return_VALUE(-EINVAL);

	acpi_processor_set_pdc(pr, pr->performance->pdc);

	status = acpi_get_handle(pr->handle, "_PCT", &handle);
	if (ACPI_FAILURE(status)) {
		ACPI_DEBUG_PRINT((ACPI_DB_INFO,
				  "ACPI-based processor performance control unavailable\n"));
		return_VALUE(-ENODEV);
	}

	result = acpi_processor_get_performance_control(pr);
	if (result)
		return_VALUE(result);

	result = acpi_processor_get_performance_states(pr);
	if (result)
		return_VALUE(result);

	result = acpi_processor_get_platform_limit(pr);
	if (result)
		return_VALUE(result);

	return_VALUE(0);
}

Beispiel #2

Datei: processor_perflib.c Projekt: ivucica/linux

static int acpi_processor_get_performance_info(struct acpi_processor *pr)
{
	int result = 0;
	acpi_status status = AE_OK;
	acpi_handle handle = NULL;


	if (!pr || !pr->performance || !pr->handle)
		return -EINVAL;

	status = acpi_get_handle(pr->handle, "_PCT", &handle);
	if (ACPI_FAILURE(status)) {
		ACPI_DEBUG_PRINT((ACPI_DB_INFO,
				  "ACPI-based processor performance control unavailable\n"));
		return -ENODEV;
	}

	result = acpi_processor_get_performance_control(pr);
	if (result)
		return result;

	result = acpi_processor_get_performance_states(pr);
	if (result)
		return result;

	return 0;
}

Beispiel #3

Datei: processor_perflib.c Projekt: AsadRaza/OCTEON-Linux

static
#endif
int acpi_processor_get_performance_info(struct acpi_processor *pr)
{
	int result = 0;
	acpi_status status = AE_OK;
	acpi_handle handle = NULL;

	if (!pr || !pr->performance || !pr->handle)
		return -EINVAL;

	status = acpi_get_handle(pr->handle, "_PCT", &handle);
	if (ACPI_FAILURE(status)) {
		ACPI_DEBUG_PRINT((ACPI_DB_INFO,
				  "ACPI-based processor performance control unavailable\n"));
		return -ENODEV;
	}

	result = acpi_processor_get_performance_control(pr);
	if (result)
		goto update_bios;

	result = acpi_processor_get_performance_states(pr);
	if (result)
		goto update_bios;

	return 0;

	/*
	 * Having _PPC but missing frequencies (_PSS, _PCT) is a very good hint that
	 * the BIOS is older than the CPU and does not know its frequencies
	 */
 update_bios:
#ifdef CONFIG_X86
	if (ACPI_SUCCESS(acpi_get_handle(pr->handle, "_PPC", &handle))){
		if(boot_cpu_has(X86_FEATURE_EST))
			printk(KERN_WARNING FW_BUG "BIOS needs update for CPU "
			       "frequency support\n");
	}
#endif
	return result;
}