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SubjectRe: [PATCH v2 3/3] thermal: cpu_cooling: Migrate to using the EM framework
On 17-04-19, 10:43, Quentin Perret wrote:
> static struct thermal_cooling_device *
> __cpufreq_cooling_register(struct device_node *np,
> - struct cpufreq_policy *policy, u32 capacitance)
> + struct cpufreq_policy *policy,
> + struct em_perf_domain *em)
> {

> + if (em_is_sane(cpufreq_cdev, em)) {
> + cpufreq_cdev->em = em;
> cooling_ops = &cpufreq_power_cooling_ops;
> - } else {
> + } else if (policy->freq_table_sorted != CPUFREQ_TABLE_UNSORTED) {
> cooling_ops = &cpufreq_cooling_ops;
> + } else {
> + WARN(1, "cpu_cooling: no valid frequency table found\n");

Well the frequency table is valid, isn't it ? Maybe something like: "cpu_cooling
doesn't support unsorted frequency tables" ?

> + cdev = ERR_PTR(-EINVAL);
> + goto remove_ida;
> }
>
> cdev = thermal_of_cooling_device_register(np, dev_name, cpufreq_cdev,
> @@ -691,7 +619,7 @@ __cpufreq_cooling_register(struct device_node *np,
> if (IS_ERR(cdev))
> goto remove_ida;
>
> - cpufreq_cdev->clipped_freq = cpufreq_cdev->freq_table[0].frequency;
> + cpufreq_cdev->clipped_freq = get_state_freq(cpufreq_cdev, 0);
> cpufreq_cdev->cdev = cdev;
>
> mutex_lock(&cooling_list_lock);
> @@ -708,8 +636,6 @@ __cpufreq_cooling_register(struct device_node *np,
>
> remove_ida:
> ida_simple_remove(&cpufreq_ida, cpufreq_cdev->id);
> -free_table:
> - kfree(cpufreq_cdev->freq_table);
> free_idle_time:
> kfree(cpufreq_cdev->idle_time);
> free_cdev:
> @@ -731,7 +657,7 @@ __cpufreq_cooling_register(struct device_node *np,
> struct thermal_cooling_device *
> cpufreq_cooling_register(struct cpufreq_policy *policy)
> {
> - return __cpufreq_cooling_register(NULL, policy, 0);
> + return __cpufreq_cooling_register(NULL, policy, NULL);
> }
> EXPORT_SYMBOL_GPL(cpufreq_cooling_register);
>
> @@ -759,7 +685,6 @@ 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;
> - u32 capacitance = 0;
>
> if (!np) {
> pr_err("cpu_cooling: OF node not available for cpu%d\n",
> @@ -768,10 +693,9 @@ of_cpufreq_cooling_register(struct cpufreq_policy *policy)
> }
>
> if (of_find_property(np, "#cooling-cells", NULL)) {
> - of_property_read_u32(np, "dynamic-power-coefficient",
> - &capacitance);
> + struct em_perf_domain *em = em_cpu_get(policy->cpu);
>
> - cdev = __cpufreq_cooling_register(np, policy, capacitance);
> + 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));
> @@ -813,7 +737,6 @@ void cpufreq_cooling_unregister(struct thermal_cooling_device *cdev)
> thermal_cooling_device_unregister(cpufreq_cdev->cdev);
> ida_simple_remove(&cpufreq_ida, cpufreq_cdev->id);
> kfree(cpufreq_cdev->idle_time);
> - kfree(cpufreq_cdev->freq_table);
> kfree(cpufreq_cdev);
> }
> EXPORT_SYMBOL_GPL(cpufreq_cooling_unregister);
> --
> 2.21.0

--
viresh

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