On 30/05/2019 11:20, Quentin Perret wrote: > The core CPU cooling infrastructure has power-related functions > that have only one client: IPA. Since there can be no user of those > functions if IPA is not compiled in, make sure to guard them with > checks on CONFIG_THERMAL_GOV_POWER_ALLOCATOR to not waste space > unnecessarily. > > Suggested-by: Daniel Lezcano <[email protected]> > Signed-off-by: Quentin Perret <[email protected]>
Acked-by: Daniel Lezcano <[email protected]> Thanks! -- Daniel > --- > drivers/thermal/cpu_cooling.c | 214 +++++++++++++++++----------------- > 1 file changed, 104 insertions(+), 110 deletions(-) > > diff --git a/drivers/thermal/cpu_cooling.c b/drivers/thermal/cpu_cooling.c > index 4c5db59a619b..498f59ab64b2 100644 > --- a/drivers/thermal/cpu_cooling.c > +++ b/drivers/thermal/cpu_cooling.c > @@ -46,7 +46,9 @@ > */ > struct freq_table { > u32 frequency; > +#ifdef CONFIG_THERMAL_GOV_POWER_ALLOCATOR > u32 power; > +#endif > }; > > /** > @@ -96,28 +98,6 @@ static DEFINE_IDA(cpufreq_ida); > static DEFINE_MUTEX(cooling_list_lock); > static LIST_HEAD(cpufreq_cdev_list); > > -/* Below code defines functions to be used for cpufreq as cooling device */ > - > -/** > - * 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) > -{ > - struct freq_table *freq_table = cpufreq_cdev->freq_table; > - unsigned long level; > - > - for (level = 1; level <= cpufreq_cdev->max_level; level++) > - if (freq > freq_table[level].frequency) > - break; > - > - return level - 1; > -} > - > /** > * cpufreq_thermal_notifier - notifier callback for cpufreq policy change. > * @nb: struct notifier_block * with callback info. > @@ -171,6 +151,27 @@ static int cpufreq_thermal_notifier(struct > notifier_block *nb, > return NOTIFY_OK; > } > > +#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) > +{ > + struct freq_table *freq_table = cpufreq_cdev->freq_table; > + unsigned long level; > + > + for (level = 1; level <= cpufreq_cdev->max_level; level++) > + if (freq > freq_table[level].frequency) > + break; > + > + return level - 1; > +} > + > /** > * update_freq_table() - Update the freq table with power numbers > * @cpufreq_cdev: the cpufreq cooling device in which to update the table > @@ -319,80 +320,6 @@ static u32 get_dynamic_power(struct > cpufreq_cooling_device *cpufreq_cdev, > return (raw_cpu_power * cpufreq_cdev->last_load) / 100; > } > > -/* 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; > - unsigned int clip_freq; > - > - /* 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; > - > - clip_freq = cpufreq_cdev->freq_table[state].frequency; > - cpufreq_cdev->cpufreq_state = state; > - cpufreq_cdev->clipped_freq = clip_freq; > - > - cpufreq_update_policy(cpufreq_cdev->policy->cpu); > - > - return 0; > -} > - > /** > * cpufreq_get_requested_power() - get the current power > * @cdev: &thermal_cooling_device pointer > @@ -536,22 +463,88 @@ static int cpufreq_power2state(struct > thermal_cooling_device *cdev, > power); > return 0; > } > +#endif /* CONFIG_THERMAL_GOV_POWER_ALLOCATOR */ > + > +/* 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; > + unsigned int clip_freq; > + > + /* 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; > + > + clip_freq = cpufreq_cdev->freq_table[state].frequency; > + cpufreq_cdev->cpufreq_state = state; > + cpufreq_cdev->clipped_freq = clip_freq; > + > + cpufreq_update_policy(cpufreq_cdev->policy->cpu); > + > + return 0; > +} > > /* 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, > -}; > - > -static struct thermal_cooling_device_ops cpufreq_power_cooling_ops = { > .get_max_state = cpufreq_get_max_state, > .get_cur_state = cpufreq_get_cur_state, > .set_cur_state = cpufreq_set_cur_state, > - .get_requested_power = cpufreq_get_requested_power, > - .state2power = cpufreq_state2power, > - .power2state = cpufreq_power2state, > }; > > /* Notifier for cpufreq policy change */ > @@ -659,18 +652,19 @@ __cpufreq_cooling_register(struct device_node *np, > pr_debug("%s: freq:%u KHz\n", __func__, freq); > } > > + cooling_ops = &cpufreq_cooling_ops; > +#ifdef CONFIG_THERMAL_GOV_POWER_ALLOCATOR > if (capacitance) { > ret = update_freq_table(cpufreq_cdev, capacitance); > if (ret) { > cdev = ERR_PTR(ret); > goto remove_ida; > } > - > - cooling_ops = &cpufreq_power_cooling_ops; > - } else { > - cooling_ops = &cpufreq_cooling_ops; > + cooling_ops->get_requested_power = cpufreq_get_requested_power; > + cooling_ops->state2power = cpufreq_state2power; > + cooling_ops->power2state = cpufreq_power2state; > } > - > +#endif > cdev = thermal_of_cooling_device_register(np, dev_name, cpufreq_cdev, > cooling_ops); > if (IS_ERR(cdev)) > -- <http://www.linaro.org/> Linaro.org │ Open source software for ARM SoCs Follow Linaro: <http://www.facebook.com/pages/Linaro> Facebook | <http://twitter.com/#!/linaroorg> Twitter | <http://www.linaro.org/linaro-blog/> Blog
