thermal/drivers/cpu_cooling: Rename to cpufreq_cooling

As we introduced the idle injection cooling device called
cpuidle_cooling, let's be consistent and rename the cpu_cooling to
cpufreq_cooling as this one mitigates with OPPs changes.

Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
Reviewed-by: Amit Kucheria <amit.kucheria@linaro.org>
Link: https://lore.kernel.org/r/20191219225317.17158-3-daniel.lezcano@linaro.org

1 files changed, 0 insertions, 670 deletions

diff --git a/drivers/thermal/cpu_cooling.c b/drivers/thermal/cpu_cooling.c
deleted file mode 100644
index 53dd08f238d5..000000000000
--- a/drivers/thermal/cpu_cooling.c
+++ /dev/null
@@ -1,670 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0
-/*
- *  linux/drivers/thermal/cpu_cooling.c
- *
- *  Copyright (C) 2012	Samsung Electronics Co., Ltd(http://www.samsung.com)
- *
- *  Copyright (C) 2012-2018 Linaro Limited.
- *
- *  Authors:	Amit Daniel <amit.kachhap@linaro.org>
- *		Viresh Kumar <viresh.kumar@linaro.org>
- *
- */
-#include <linux/module.h>
-#include <linux/thermal.h>
-#include <linux/cpufreq.h>
-#include <linux/err.h>
-#include <linux/idr.h>
-#include <linux/pm_opp.h>
-#include <linux/pm_qos.h>
-#include <linux/slab.h>
-#include <linux/cpu.h>
-#include <linux/cpu_cooling.h>
-#include <linux/energy_model.h>
-
-#include <trace/events/thermal.h>
-
-/*
- * Cooling state <-> CPUFreq frequency
- *
- * Cooling states are translated to frequencies throughout this driver and this
- * is the relation between them.
- *
- * Highest cooling state corresponds to lowest possible frequency.
- *
- * i.e.
- *	level 0 --> 1st Max Freq
- *	level 1 --> 2nd Max Freq
- *	...
- */
-
-/**
- * struct time_in_idle - Idle time stats
- * @time: previous reading of the absolute time that this cpu was idle
- * @timestamp: wall time of the last invocation of get_cpu_idle_time_us()
- */
-struct time_in_idle {
-	u64 time;
-	u64 timestamp;
-};
-
-/**
- * struct cpufreq_cooling_device - data for cooling device with cpufreq
- * @id: unique integer value corresponding to each cpufreq_cooling_device
- *	registered.
- * @last_load: load measured by the latest call to cpufreq_get_requested_power()
- * @cpufreq_state: integer value representing the current state of cpufreq
- *	cooling	devices.
- * @max_level: maximum cooling level. One less than total number of valid
- *	cpufreq frequencies.
- * @em: Reference on the Energy Model of the device
- * @cdev: thermal_cooling_device pointer to keep track of the
- *	registered cooling device.
- * @policy: cpufreq policy.
- * @node: list_head to link all cpufreq_cooling_device together.
- * @idle_time: idle time stats
- * @qos_req: PM QoS contraint to apply
- *
- * This structure is required for keeping information of each registered
- * cpufreq_cooling_device.
- */
-struct cpufreq_cooling_device {
-	int id;
-	u32 last_load;
-	unsigned int cpufreq_state;
-	unsigned int max_level;
-	struct em_perf_domain *em;
-	struct cpufreq_policy *policy;
-	struct list_head node;
-	struct time_in_idle *idle_time;
-	struct freq_qos_request qos_req;
-};
-
-static DEFINE_IDA(cpufreq_ida);
-static DEFINE_MUTEX(cooling_list_lock);
-static LIST_HEAD(cpufreq_cdev_list);
-
-#ifdef CONFIG_THERMAL_GOV_POWER_ALLOCATOR
-/**
- * get_level: Find the level for a particular frequency
- * @cpufreq_cdev: cpufreq_cdev for which the property is required
- * @freq: Frequency
- *
- * Return: level corresponding to the frequency.
- */
-static unsigned long get_level(struct cpufreq_cooling_device *cpufreq_cdev,
-			       unsigned int freq)
-{
-	int i;
-
-	for (i = cpufreq_cdev->max_level - 1; i >= 0; i--) {
-		if (freq > cpufreq_cdev->em->table[i].frequency)
-			break;
-	}
-
-	return cpufreq_cdev->max_level - i - 1;
-}
-
-static u32 cpu_freq_to_power(struct cpufreq_cooling_device *cpufreq_cdev,
-			     u32 freq)
-{
-	int i;
-
-	for (i = cpufreq_cdev->max_level - 1; i >= 0; i--) {
-		if (freq > cpufreq_cdev->em->table[i].frequency)
-			break;
-	}
-
-	return cpufreq_cdev->em->table[i + 1].power;
-}
-
-static u32 cpu_power_to_freq(struct cpufreq_cooling_device *cpufreq_cdev,
-			     u32 power)
-{
-	int i;
-
-	for (i = cpufreq_cdev->max_level - 1; i >= 0; i--) {
-		if (power > cpufreq_cdev->em->table[i].power)
-			break;
-	}
-
-	return cpufreq_cdev->em->table[i + 1].frequency;
-}
-
-/**
- * get_load() - get load for a cpu since last updated
- * @cpufreq_cdev:	&struct cpufreq_cooling_device for this cpu
- * @cpu:	cpu number
- * @cpu_idx:	index of the cpu in time_in_idle*
- *
- * Return: The average load of cpu @cpu in percentage since this
- * function was last called.
- */
-static u32 get_load(struct cpufreq_cooling_device *cpufreq_cdev, int cpu,
-		    int cpu_idx)
-{
-	u32 load;
-	u64 now, now_idle, delta_time, delta_idle;
-	struct time_in_idle *idle_time = &cpufreq_cdev->idle_time[cpu_idx];
-
-	now_idle = get_cpu_idle_time(cpu, &now, 0);
-	delta_idle = now_idle - idle_time->time;
-	delta_time = now - idle_time->timestamp;
-
-	if (delta_time <= delta_idle)
-		load = 0;
-	else
-		load = div64_u64(100 * (delta_time - delta_idle), delta_time);
-
-	idle_time->time = now_idle;
-	idle_time->timestamp = now;
-
-	return load;
-}
-
-/**
- * get_dynamic_power() - calculate the dynamic power
- * @cpufreq_cdev:	&cpufreq_cooling_device for this cdev
- * @freq:	current frequency
- *
- * Return: the dynamic power consumed by the cpus described by
- * @cpufreq_cdev.
- */
-static u32 get_dynamic_power(struct cpufreq_cooling_device *cpufreq_cdev,
-			     unsigned long freq)
-{
-	u32 raw_cpu_power;
-
-	raw_cpu_power = cpu_freq_to_power(cpufreq_cdev, freq);
-	return (raw_cpu_power * cpufreq_cdev->last_load) / 100;
-}
-
-/**
- * cpufreq_get_requested_power() - get the current power
- * @cdev:	&thermal_cooling_device pointer
- * @tz:		a valid thermal zone device pointer
- * @power:	pointer in which to store the resulting power
- *
- * Calculate the current power consumption of the cpus in milliwatts
- * and store it in @power.  This function should actually calculate
- * the requested power, but it's hard to get the frequency that
- * cpufreq would have assigned if there were no thermal limits.
- * Instead, we calculate the current power on the assumption that the
- * immediate future will look like the immediate past.
- *
- * We use the current frequency and the average load since this
- * function was last called.  In reality, there could have been
- * multiple opps since this function was last called and that affects
- * the load calculation.  While it's not perfectly accurate, this
- * simplification is good enough and works.  REVISIT this, as more
- * complex code may be needed if experiments show that it's not
- * accurate enough.
- *
- * Return: 0 on success, -E* if getting the static power failed.
- */
-static int cpufreq_get_requested_power(struct thermal_cooling_device *cdev,
-				       struct thermal_zone_device *tz,
-				       u32 *power)
-{
-	unsigned long freq;
-	int i = 0, cpu;
-	u32 total_load = 0;
-	struct cpufreq_cooling_device *cpufreq_cdev = cdev->devdata;
-	struct cpufreq_policy *policy = cpufreq_cdev->policy;
-	u32 *load_cpu = NULL;
-
-	freq = cpufreq_quick_get(policy->cpu);
-
-	if (trace_thermal_power_cpu_get_power_enabled()) {
-		u32 ncpus = cpumask_weight(policy->related_cpus);
-
-		load_cpu = kcalloc(ncpus, sizeof(*load_cpu), GFP_KERNEL);
-	}
-
-	for_each_cpu(cpu, policy->related_cpus) {
-		u32 load;
-
-		if (cpu_online(cpu))
-			load = get_load(cpufreq_cdev, cpu, i);
-		else
-			load = 0;
-
-		total_load += load;
-		if (load_cpu)
-			load_cpu[i] = load;
-
-		i++;
-	}
-
-	cpufreq_cdev->last_load = total_load;
-
-	*power = get_dynamic_power(cpufreq_cdev, freq);
-
-	if (load_cpu) {
-		trace_thermal_power_cpu_get_power(policy->related_cpus, freq,
-						  load_cpu, i, *power);
-
-		kfree(load_cpu);
-	}
-
-	return 0;
-}
-
-/**
- * cpufreq_state2power() - convert a cpu cdev state to power consumed
- * @cdev:	&thermal_cooling_device pointer
- * @tz:		a valid thermal zone device pointer
- * @state:	cooling device state to be converted
- * @power:	pointer in which to store the resulting power
- *
- * Convert cooling device state @state into power consumption in
- * milliwatts assuming 100% load.  Store the calculated power in
- * @power.
- *
- * Return: 0 on success, -EINVAL if the cooling device state could not
- * be converted into a frequency or other -E* if there was an error
- * when calculating the static power.
- */
-static int cpufreq_state2power(struct thermal_cooling_device *cdev,
-			       struct thermal_zone_device *tz,
-			       unsigned long state, u32 *power)
-{
-	unsigned int freq, num_cpus, idx;
-	struct cpufreq_cooling_device *cpufreq_cdev = cdev->devdata;
-
-	/* Request state should be less than max_level */
-	if (WARN_ON(state > cpufreq_cdev->max_level))
-		return -EINVAL;
-
-	num_cpus = cpumask_weight(cpufreq_cdev->policy->cpus);
-
-	idx = cpufreq_cdev->max_level - state;
-	freq = cpufreq_cdev->em->table[idx].frequency;
-	*power = cpu_freq_to_power(cpufreq_cdev, freq) * num_cpus;
-
-	return 0;
-}
-
-/**
- * cpufreq_power2state() - convert power to a cooling device state
- * @cdev:	&thermal_cooling_device pointer
- * @tz:		a valid thermal zone device pointer
- * @power:	power in milliwatts to be converted
- * @state:	pointer in which to store the resulting state
- *
- * Calculate a cooling device state for the cpus described by @cdev
- * that would allow them to consume at most @power mW and store it in
- * @state.  Note that this calculation depends on external factors
- * such as the cpu load or the current static power.  Calling this
- * function with the same power as input can yield different cooling
- * device states depending on those external factors.
- *
- * Return: 0 on success, -ENODEV if no cpus are online or -EINVAL if
- * the calculated frequency could not be converted to a valid state.
- * The latter should not happen unless the frequencies available to
- * cpufreq have changed since the initialization of the cpu cooling
- * device.
- */
-static int cpufreq_power2state(struct thermal_cooling_device *cdev,
-			       struct thermal_zone_device *tz, u32 power,
-			       unsigned long *state)
-{
-	unsigned int target_freq;
-	u32 last_load, normalised_power;
-	struct cpufreq_cooling_device *cpufreq_cdev = cdev->devdata;
-	struct cpufreq_policy *policy = cpufreq_cdev->policy;
-
-	last_load = cpufreq_cdev->last_load ?: 1;
-	normalised_power = (power * 100) / last_load;
-	target_freq = cpu_power_to_freq(cpufreq_cdev, normalised_power);
-
-	*state = get_level(cpufreq_cdev, target_freq);
-	trace_thermal_power_cpu_limit(policy->related_cpus, target_freq, *state,
-				      power);
-	return 0;
-}
-
-static inline bool em_is_sane(struct cpufreq_cooling_device *cpufreq_cdev,
-			      struct em_perf_domain *em) {
-	struct cpufreq_policy *policy;
-	unsigned int nr_levels;
-
-	if (!em)
-		return false;
-
-	policy = cpufreq_cdev->policy;
-	if (!cpumask_equal(policy->related_cpus, to_cpumask(em->cpus))) {
-		pr_err("The span of pd %*pbl is misaligned with cpufreq policy %*pbl\n",
-			cpumask_pr_args(to_cpumask(em->cpus)),
-			cpumask_pr_args(policy->related_cpus));
-		return false;
-	}
-
-	nr_levels = cpufreq_cdev->max_level + 1;
-	if (em->nr_cap_states != nr_levels) {
-		pr_err("The number of cap states in pd %*pbl (%u) doesn't match the number of cooling levels (%u)\n",
-			cpumask_pr_args(to_cpumask(em->cpus)),
-			em->nr_cap_states, nr_levels);
-		return false;
-	}
-
-	return true;
-}
-#endif /* CONFIG_THERMAL_GOV_POWER_ALLOCATOR */
-
-static unsigned int get_state_freq(struct cpufreq_cooling_device *cpufreq_cdev,
-				   unsigned long state)
-{
-	struct cpufreq_policy *policy;
-	unsigned long idx;
-
-#ifdef CONFIG_THERMAL_GOV_POWER_ALLOCATOR
-	/* Use the Energy Model table if available */
-	if (cpufreq_cdev->em) {
-		idx = cpufreq_cdev->max_level - state;
-		return cpufreq_cdev->em->table[idx].frequency;
-	}
-#endif
-
-	/* Otherwise, fallback on the CPUFreq table */
-	policy = cpufreq_cdev->policy;
-	if (policy->freq_table_sorted == CPUFREQ_TABLE_SORTED_ASCENDING)
-		idx = cpufreq_cdev->max_level - state;
-	else
-		idx = state;
-
-	return policy->freq_table[idx].frequency;
-}
-
-/* cpufreq cooling device callback functions are defined below */
-
-/**
- * cpufreq_get_max_state - callback function to get the max cooling state.
- * @cdev: thermal cooling device pointer.
- * @state: fill this variable with the max cooling state.
- *
- * Callback for the thermal cooling device to return the cpufreq
- * max cooling state.
- *
- * Return: 0 on success, an error code otherwise.
- */
-static int cpufreq_get_max_state(struct thermal_cooling_device *cdev,
-				 unsigned long *state)
-{
-	struct cpufreq_cooling_device *cpufreq_cdev = cdev->devdata;
-
-	*state = cpufreq_cdev->max_level;
-	return 0;
-}
-
-/**
- * cpufreq_get_cur_state - callback function to get the current cooling state.
- * @cdev: thermal cooling device pointer.
- * @state: fill this variable with the current cooling state.
- *
- * Callback for the thermal cooling device to return the cpufreq
- * current cooling state.
- *
- * Return: 0 on success, an error code otherwise.
- */
-static int cpufreq_get_cur_state(struct thermal_cooling_device *cdev,
-				 unsigned long *state)
-{
-	struct cpufreq_cooling_device *cpufreq_cdev = cdev->devdata;
-
-	*state = cpufreq_cdev->cpufreq_state;
-
-	return 0;
-}
-
-/**
- * cpufreq_set_cur_state - callback function to set the current cooling state.
- * @cdev: thermal cooling device pointer.
- * @state: set this variable to the current cooling state.
- *
- * Callback for the thermal cooling device to change the cpufreq
- * current cooling state.
- *
- * Return: 0 on success, an error code otherwise.
- */
-static int cpufreq_set_cur_state(struct thermal_cooling_device *cdev,
-				 unsigned long state)
-{
-	struct cpufreq_cooling_device *cpufreq_cdev = cdev->devdata;
-
-	/* Request state should be less than max_level */
-	if (WARN_ON(state > cpufreq_cdev->max_level))
-		return -EINVAL;
-
-	/* Check if the old cooling action is same as new cooling action */
-	if (cpufreq_cdev->cpufreq_state == state)
-		return 0;
-
-	cpufreq_cdev->cpufreq_state = state;
-
-	return freq_qos_update_request(&cpufreq_cdev->qos_req,
-				get_state_freq(cpufreq_cdev, state));
-}
-
-/* Bind cpufreq callbacks to thermal cooling device ops */
-
-static struct thermal_cooling_device_ops cpufreq_cooling_ops = {
-	.get_max_state		= cpufreq_get_max_state,
-	.get_cur_state		= cpufreq_get_cur_state,
-	.set_cur_state		= cpufreq_set_cur_state,
-};
-
-/**
- * __cpufreq_cooling_register - helper function to create cpufreq cooling device
- * @np: a valid struct device_node to the cooling device device tree node
- * @policy: cpufreq policy
- * Normally this should be same as cpufreq policy->related_cpus.
- * @em: Energy Model of the cpufreq policy
- *
- * This interface function registers the cpufreq cooling device with the name
- * "thermal-cpufreq-%x". This api can support multiple instances of cpufreq
- * cooling devices. It also gives the opportunity to link the cooling device
- * with a device tree node, in order to bind it via the thermal DT code.
- *
- * Return: a valid struct thermal_cooling_device pointer on success,
- * on failure, it returns a corresponding ERR_PTR().
- */
-static struct thermal_cooling_device *
-__cpufreq_cooling_register(struct device_node *np,
-			struct cpufreq_policy *policy,
-			struct em_perf_domain *em)
-{
-	struct thermal_cooling_device *cdev;
-	struct cpufreq_cooling_device *cpufreq_cdev;
-	char dev_name[THERMAL_NAME_LENGTH];
-	unsigned int i, num_cpus;
-	struct device *dev;
-	int ret;
-	struct thermal_cooling_device_ops *cooling_ops;
-
-	dev = get_cpu_device(policy->cpu);
-	if (unlikely(!dev)) {
-		pr_warn("No cpu device for cpu %d\n", policy->cpu);
-		return ERR_PTR(-ENODEV);
-	}
-
-
-	if (IS_ERR_OR_NULL(policy)) {
-		pr_err("%s: cpufreq policy isn't valid: %p\n", __func__, policy);
-		return ERR_PTR(-EINVAL);
-	}
-
-	i = cpufreq_table_count_valid_entries(policy);
-	if (!i) {
-		pr_debug("%s: CPUFreq table not found or has no valid entries\n",
-			 __func__);
-		return ERR_PTR(-ENODEV);
-	}
-
-	cpufreq_cdev = kzalloc(sizeof(*cpufreq_cdev), GFP_KERNEL);
-	if (!cpufreq_cdev)
-		return ERR_PTR(-ENOMEM);
-
-	cpufreq_cdev->policy = policy;
-	num_cpus = cpumask_weight(policy->related_cpus);
-	cpufreq_cdev->idle_time = kcalloc(num_cpus,
-					 sizeof(*cpufreq_cdev->idle_time),
-					 GFP_KERNEL);
-	if (!cpufreq_cdev->idle_time) {
-		cdev = ERR_PTR(-ENOMEM);
-		goto free_cdev;
-	}
-
-	/* max_level is an index, not a counter */
-	cpufreq_cdev->max_level = i - 1;
-
-	ret = ida_simple_get(&cpufreq_ida, 0, 0, GFP_KERNEL);
-	if (ret < 0) {
-		cdev = ERR_PTR(ret);
-		goto free_idle_time;
-	}
-	cpufreq_cdev->id = ret;
-
-	snprintf(dev_name, sizeof(dev_name), "thermal-cpufreq-%d",
-		 cpufreq_cdev->id);
-
-	cooling_ops = &cpufreq_cooling_ops;
-
-#ifdef CONFIG_THERMAL_GOV_POWER_ALLOCATOR
-	if (em_is_sane(cpufreq_cdev, em)) {
-		cpufreq_cdev->em = em;
-		cooling_ops->get_requested_power = cpufreq_get_requested_power;
-		cooling_ops->state2power = cpufreq_state2power;
-		cooling_ops->power2state = cpufreq_power2state;
-	} else
-#endif
-	if (policy->freq_table_sorted == CPUFREQ_TABLE_UNSORTED) {
-		pr_err("%s: unsorted frequency tables are not supported\n",
-		       __func__);
-		cdev = ERR_PTR(-EINVAL);
-		goto remove_ida;
-	}
-
-	ret = freq_qos_add_request(&policy->constraints,
-				   &cpufreq_cdev->qos_req, FREQ_QOS_MAX,
-				   get_state_freq(cpufreq_cdev, 0));
-	if (ret < 0) {
-		pr_err("%s: Failed to add freq constraint (%d)\n", __func__,
-		       ret);
-		cdev = ERR_PTR(ret);
-		goto remove_ida;
-	}
-
-	cdev = thermal_of_cooling_device_register(np, dev_name, cpufreq_cdev,
-						  cooling_ops);
-	if (IS_ERR(cdev))
-		goto remove_qos_req;
-
-	mutex_lock(&cooling_list_lock);
-	list_add(&cpufreq_cdev->node, &cpufreq_cdev_list);
-	mutex_unlock(&cooling_list_lock);
-
-	return cdev;
-
-remove_qos_req:
-	freq_qos_remove_request(&cpufreq_cdev->qos_req);
-remove_ida:
-	ida_simple_remove(&cpufreq_ida, cpufreq_cdev->id);
-free_idle_time:
-	kfree(cpufreq_cdev->idle_time);
-free_cdev:
-	kfree(cpufreq_cdev);
-	return cdev;
-}
-
-/**
- * cpufreq_cooling_register - function to create cpufreq cooling device.
- * @policy: cpufreq policy
- *
- * This interface function registers the cpufreq cooling device with the name
- * "thermal-cpufreq-%x". This api can support multiple instances of cpufreq
- * cooling devices.
- *
- * Return: a valid struct thermal_cooling_device pointer on success,
- * on failure, it returns a corresponding ERR_PTR().
- */
-struct thermal_cooling_device *
-cpufreq_cooling_register(struct cpufreq_policy *policy)
-{
-	return __cpufreq_cooling_register(NULL, policy, NULL);
-}
-EXPORT_SYMBOL_GPL(cpufreq_cooling_register);
-
-/**
- * of_cpufreq_cooling_register - function to create cpufreq cooling device.
- * @policy: cpufreq policy
- *
- * This interface function registers the cpufreq cooling device with the name
- * "thermal-cpufreq-%x". This api can support multiple instances of cpufreq
- * cooling devices. Using this API, the cpufreq cooling device will be
- * linked to the device tree node provided.
- *
- * Using this function, the cooling device will implement the power
- * extensions by using a simple cpu power model.  The cpus must have
- * registered their OPPs using the OPP library.
- *
- * It also takes into account, if property present in policy CPU node, the
- * static power consumed by the cpu.
- *
- * Return: a valid struct thermal_cooling_device pointer on success,
- * and NULL on failure.
- */
-struct thermal_cooling_device *
-of_cpufreq_cooling_register(struct cpufreq_policy *policy)
-{
-	struct device_node *np = of_get_cpu_node(policy->cpu, NULL);
-	struct thermal_cooling_device *cdev = NULL;
-
-	if (!np) {
-		pr_err("cpu_cooling: OF node not available for cpu%d\n",
-		       policy->cpu);
-		return NULL;
-	}
-
-	if (of_find_property(np, "#cooling-cells", NULL)) {
-		struct em_perf_domain *em = em_cpu_get(policy->cpu);
-
-		cdev = __cpufreq_cooling_register(np, policy, em);
-		if (IS_ERR(cdev)) {
-			pr_err("cpu_cooling: cpu%d failed to register as cooling device: %ld\n",
-			       policy->cpu, PTR_ERR(cdev));
-			cdev = NULL;
-		}
-	}
-
-	of_node_put(np);
-	return cdev;
-}
-EXPORT_SYMBOL_GPL(of_cpufreq_cooling_register);
-
-/**
- * cpufreq_cooling_unregister - function to remove cpufreq cooling device.
- * @cdev: thermal cooling device pointer.
- *
- * This interface function unregisters the "thermal-cpufreq-%x" cooling device.
- */
-void cpufreq_cooling_unregister(struct thermal_cooling_device *cdev)
-{
-	struct cpufreq_cooling_device *cpufreq_cdev;
-
-	if (!cdev)
-		return;
-
-	cpufreq_cdev = cdev->devdata;
-
-	mutex_lock(&cooling_list_lock);
-	list_del(&cpufreq_cdev->node);
-	mutex_unlock(&cooling_list_lock);
-
-	thermal_cooling_device_unregister(cdev);
-	freq_qos_remove_request(&cpufreq_cdev->qos_req);
-	ida_simple_remove(&cpufreq_ida, cpufreq_cdev->id);
-	kfree(cpufreq_cdev->idle_time);
-	kfree(cpufreq_cdev);
-}
-EXPORT_SYMBOL_GPL(cpufreq_cooling_unregister);