コード例 #1
0
static int pseries_cpuidle_add_cpu_notifier(struct notifier_block *n,
			unsigned long action, void *hcpu)
{
	int hotcpu = (unsigned long)hcpu;
	struct cpuidle_device *dev =
				per_cpu(cpuidle_devices, hotcpu);

	if (dev && cpuidle_get_driver()) {
		switch (action) {
		case CPU_ONLINE:
		case CPU_ONLINE_FROZEN:
			cpuidle_pause_and_lock();
			cpuidle_enable_device(dev);
			cpuidle_resume_and_unlock();
			break;

		case CPU_DEAD:
		case CPU_DEAD_FROZEN:
			cpuidle_pause_and_lock();
			cpuidle_disable_device(dev);
			cpuidle_resume_and_unlock();
			break;

		default:
			return NOTIFY_DONE;
		}
	}
	return NOTIFY_OK;
}
コード例 #2
0
int acpi_processor_cst_has_changed(struct acpi_processor *pr)
{
	int ret = 0;

	if (boot_option_idle_override)
		return 0;

	if (!pr)
		return -EINVAL;

	if (nocst) {
		return -ENODEV;
	}

	if (!pr->flags.power_setup_done)
		return -ENODEV;

	cpuidle_pause_and_lock();
	cpuidle_disable_device(&pr->power.dev);
	acpi_processor_get_power_info(pr);
	if (pr->flags.power) {
		acpi_processor_setup_cpuidle(pr);
		ret = cpuidle_enable_device(&pr->power.dev);
	}
	cpuidle_resume_and_unlock();

	return ret;
}
コード例 #3
0
int acpi_processor_hotplug(struct acpi_processor *pr)
{
	int ret = 0;

	if (disabled_by_idle_boot_param())
		return 0;

	if (!pr)
		return -EINVAL;

	if (nocst) {
		return -ENODEV;
	}

	if (!pr->flags.power_setup_done)
		return -ENODEV;

	cpuidle_pause_and_lock();
	cpuidle_disable_device(&pr->power.dev);
	acpi_processor_get_power_info(pr);
	if (pr->flags.power) {
		acpi_processor_setup_cpuidle_cx(pr);
		ret = cpuidle_enable_device(&pr->power.dev);
	}
	cpuidle_resume_and_unlock();

	return ret;
}
コード例 #4
0
int acpi_processor_hotplug(struct acpi_processor *pr)
{
	int ret = 0;
	struct cpuidle_device *dev;

	if (disabled_by_idle_boot_param())
		return 0;

	if (nocst)
		return -ENODEV;

	if (!pr->flags.power_setup_done)
		return -ENODEV;

	dev = per_cpu(acpi_cpuidle_device, pr->id);
	cpuidle_pause_and_lock();
	cpuidle_disable_device(dev);
	acpi_processor_get_power_info(pr);
	if (pr->flags.power) {
		acpi_processor_setup_cpuidle_cx(pr, dev);
		ret = cpuidle_enable_device(dev);
	}
	cpuidle_resume_and_unlock();

	return ret;
}
コード例 #5
0
/**
 * cpuidle_unregister_device - unregisters a CPU's idle PM feature
 * @dev: the cpu
 */
void cpuidle_unregister_device(struct cpuidle_device *dev)
{
	struct sys_device *sys_dev = get_cpu_sysdev((unsigned long)dev->cpu);

	if (!sys_dev) {
		pr_err(" ERR get_cpu_sysdev returned NULL\n");
		return;
	}

	if (dev->registered == 0)
		return;

	if (!sys_dev)
		return;

	cpuidle_pause_and_lock();

	cpuidle_disable_device(dev);

	cpuidle_remove_sysfs(sys_dev);
	list_del(&dev->device_list);
	wait_for_completion(&dev->kobj_unregister);
	per_cpu(cpuidle_devices, dev->cpu) = NULL;

	cpuidle_resume_and_unlock();

	module_put(cpuidle_curr_driver->owner);
}
コード例 #6
0
ファイル: cpuidle.c プロジェクト: Leoyzen/Charm-Eye
/**
 * cpuidle_unregister_device - unregisters a CPU's idle PM feature
 * @dev: the cpu
 */
void cpuidle_unregister_device(struct cpuidle_device *dev)
{
	struct device *cpu_dev;
	struct cpuidle_driver *cpuidle_driver = cpuidle_get_driver();

	if (!dev)
		return;
	cpu_dev = get_cpu_device((unsigned long)dev->cpu);
	if (!cpu_dev)
		return;
	if (dev->registered == 0)
		return;

	cpuidle_pause_and_lock();

	cpuidle_disable_device(dev);

	cpuidle_remove_sysfs(cpu_dev);
	list_del(&dev->device_list);
	wait_for_completion(&dev->kobj_unregister);
	per_cpu(cpuidle_devices, dev->cpu) = NULL;

	cpuidle_coupled_unregister_device(dev);

	cpuidle_resume_and_unlock();

	module_put(cpuidle_driver->owner);
}
コード例 #7
0
int acpi_processor_cst_has_changed(struct acpi_processor *pr)
{
	int cpu;
	struct acpi_processor *_pr;
	struct cpuidle_device *dev;

	if (disabled_by_idle_boot_param())
		return 0;

	if (!pr)
		return -EINVAL;

	if (nocst)
		return -ENODEV;

	if (!pr->flags.power_setup_done)
		return -ENODEV;

	/*
	 * FIXME:  Design the ACPI notification to make it once per
	 * system instead of once per-cpu.  This condition is a hack
	 * to make the code that updates C-States be called once.
	 */

	if (pr->id == 0 && cpuidle_get_driver() == &acpi_idle_driver) {

		cpuidle_pause_and_lock();
		/* Protect against cpu-hotplug */
		get_online_cpus();

		/* Disable all cpuidle devices */
		for_each_online_cpu(cpu) {
			_pr = per_cpu(processors, cpu);
			if (!_pr || !_pr->flags.power_setup_done)
				continue;
			dev = per_cpu(acpi_cpuidle_device, cpu);
			cpuidle_disable_device(dev);
		}

		/* Populate Updated C-state information */
		acpi_processor_get_power_info(pr);
		acpi_processor_setup_cpuidle_states(pr);

		/* Enable all cpuidle devices */
		for_each_online_cpu(cpu) {
			_pr = per_cpu(processors, cpu);
			if (!_pr || !_pr->flags.power_setup_done)
				continue;
			acpi_processor_get_power_info(_pr);
			if (_pr->flags.power) {
				dev = per_cpu(acpi_cpuidle_device, cpu);
				acpi_processor_setup_cpuidle_cx(_pr, dev);
				cpuidle_enable_device(dev);
			}
		}
		put_online_cpus();
		cpuidle_resume_and_unlock();
	}
コード例 #8
0
ファイル: cpuidle.c プロジェクト: Arakmar/G3MOD
int s5p6442_setup_lpaudio(unsigned int mode)
{
	struct cpuidle_device *device;

	int ret = 0;

	cpuidle_pause_and_lock();
	device = &per_cpu(s5p6442_cpuidle_device, smp_processor_id());
	cpuidle_disable_device(device);

	switch (mode) {
	case NORMAL_MODE:
		device->state_count = 1;
		/* Wait for interrupt state */
		device->states[0].enter = s5p6442_enter_idle_normal;
		device->states[0].exit_latency = 1;	/* uS */
		device->states[0].target_residency = 10000;
		device->states[0].flags = CPUIDLE_FLAG_TIME_VALID;
		strcpy(device->states[0].name, "IDLE");
		strcpy(device->states[0].desc, "ARM clock gating - WFI");
		break;
	case LPAUDIO_MODE:
		device->state_count = 1;
		/* Wait for interrupt state */
		device->states[0].enter = s5p6442_enter_idle_bm;
		device->states[0].exit_latency = 1;	/* uS */
		device->states[0].target_residency = 5000;
		device->states[0].flags = CPUIDLE_FLAG_TIME_VALID |
						CPUIDLE_FLAG_CHECK_BM;
		strcpy(device->states[0].name, "DEEP IDLE");
		strcpy(device->states[0].desc, "S5P6442 idle2");

		break;
	default:
		printk(KERN_ERR "Can't find cpuidle mode %d\n", mode);
		device->state_count = 1;

		/* Wait for interrupt state */
		device->states[0].enter = s5p6442_enter_idle_normal;
		device->states[0].exit_latency = 1;	/* uS */
		device->states[0].target_residency = 10000;
		device->states[0].flags = CPUIDLE_FLAG_TIME_VALID;
		strcpy(device->states[0].name, "IDLE");
		strcpy(device->states[0].desc, "ARM clock gating - WFI");
		break;
	}
	cpuidle_enable_device(device);
	cpuidle_resume_and_unlock();

	return ret;
}
コード例 #9
0
int acpi_processor_cst_has_changed(struct acpi_processor *pr)
{
	int cpu;
	struct acpi_processor *_pr;

	if (disabled_by_idle_boot_param())
		return 0;

	if (!pr)
		return -EINVAL;

	if (nocst)
		return -ENODEV;

	if (!pr->flags.power_setup_done)
		return -ENODEV;


	if (pr->id == 0 && cpuidle_get_driver() == &acpi_idle_driver) {

		cpuidle_pause_and_lock();
		
		get_online_cpus();

		
		for_each_online_cpu(cpu) {
			_pr = per_cpu(processors, cpu);
			if (!_pr || !_pr->flags.power_setup_done)
				continue;
			cpuidle_disable_device(&_pr->power.dev);
		}

		
		acpi_processor_setup_cpuidle_states(pr);

		
		for_each_online_cpu(cpu) {
			_pr = per_cpu(processors, cpu);
			if (!_pr || !_pr->flags.power_setup_done)
				continue;
			acpi_processor_get_power_info(_pr);
			if (_pr->flags.power) {
				acpi_processor_setup_cpuidle_cx(_pr);
				cpuidle_enable_device(&_pr->power.dev);
			}
		}
		put_online_cpus();
		cpuidle_resume_and_unlock();
	}
コード例 #10
0
ファイル: cpuidle.c プロジェクト: andy78328/pmu-for-omap4
/**
 * cpuidle_unregister_device - unregisters a CPU's idle PM feature
 * @dev: the cpu
 */
void cpuidle_unregister_device(struct cpuidle_device *dev)
{
	struct cpuidle_driver *drv = cpuidle_get_cpu_driver(dev);

	if (dev->registered == 0)
		return;

	cpuidle_pause_and_lock();

	cpuidle_disable_device(dev);

	cpuidle_remove_sysfs(dev);
	list_del(&dev->device_list);
	per_cpu(cpuidle_devices, dev->cpu) = NULL;

	cpuidle_coupled_unregister_device(dev);

	cpuidle_resume_and_unlock();

	module_put(drv->owner);
}