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thermal: cpu_cooling: don't store cpu_dev in cpufreq_cdev

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'cpu_dev' is used by only one function, get_static_power(), and it
wouldn't be time consuming to get the cpu device structure within it.
This would help removing cpu_dev from struct cpufreq_cooling_device.

Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
Reviewed-by: Lukasz Luba <lukasz.luba@arm.com>
Tested-by: Lukasz Luba <lukasz.luba@arm.com>
Signed-off-by: Eduardo Valentin <edubezval@gmail.com>
This commit is contained in:
Viresh Kumar 2017-04-25 15:57:22 +05:30 • committed by Eduardo Valentin
parent da27f69d6a
commit 53ca1ece60
1 changed files with 10 additions and 12 deletions
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22
drivers/thermal/cpu_cooling.c
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@ -87,7 +87,6 @@ struct time_in_idle {
* @node: list_head to link all cpufreq_cooling_device together. * @node: list_head to link all cpufreq_cooling_device together.
* @last_load: load measured by the latest call to cpufreq_get_requested_power() * @last_load: load measured by the latest call to cpufreq_get_requested_power()
* @idle_time: idle time stats * @idle_time: idle time stats
* @cpu_dev: the cpu_device of policy->cpu.
* @plat_get_static_power: callback to calculate the static power * @plat_get_static_power: callback to calculate the static power
* *
* This structure is required for keeping information of each registered * This structure is required for keeping information of each registered
@ -104,7 +103,6 @@ struct cpufreq_cooling_device {
struct list_head node; struct list_head node;
u32 last_load; u32 last_load;
struct time_in_idle *idle_time; struct time_in_idle *idle_time;
struct device *cpu_dev;
get_static_t plat_get_static_power; get_static_t plat_get_static_power;
}; };
@ -259,8 +257,6 @@ static int update_freq_table(struct cpufreq_cooling_device *cpufreq_cdev,
freq_table[i].power = power; freq_table[i].power = power;
} }
cpufreq_cdev->cpu_dev = dev;
return 0; return 0;
} }
@ -342,19 +338,22 @@ static int get_static_power(struct cpufreq_cooling_device *cpufreq_cdev,
{ {
struct dev_pm_opp *opp; struct dev_pm_opp *opp;
unsigned long voltage; unsigned long voltage;
struct cpumask *cpumask = cpufreq_cdev->policy->related_cpus; struct cpufreq_policy *policy = cpufreq_cdev->policy;
struct cpumask *cpumask = policy->related_cpus;
unsigned long freq_hz = freq * 1000; unsigned long freq_hz = freq * 1000;
struct device *dev;
if (!cpufreq_cdev->plat_get_static_power || !cpufreq_cdev->cpu_dev) { if (!cpufreq_cdev->plat_get_static_power) {
*power = 0; *power = 0;
return 0; return 0;
} }
opp = dev_pm_opp_find_freq_exact(cpufreq_cdev->cpu_dev, freq_hz, dev = get_cpu_device(policy->cpu);
true); WARN_ON(!dev);
opp = dev_pm_opp_find_freq_exact(dev, freq_hz, true);
if (IS_ERR(opp)) { if (IS_ERR(opp)) {
dev_warn_ratelimited(cpufreq_cdev->cpu_dev, dev_warn_ratelimited(dev, "Failed to find OPP for frequency %lu: %ld\n",
"Failed to find OPP for frequency %lu: %ld\n",
freq_hz, PTR_ERR(opp)); freq_hz, PTR_ERR(opp));
return -EINVAL; return -EINVAL;
} }
@ -363,8 +362,7 @@ static int get_static_power(struct cpufreq_cooling_device *cpufreq_cdev,
dev_pm_opp_put(opp); dev_pm_opp_put(opp);
if (voltage == 0) { if (voltage == 0) {
dev_err_ratelimited(cpufreq_cdev->cpu_dev, dev_err_ratelimited(dev, "Failed to get voltage for frequency %lu\n",
"Failed to get voltage for frequency %lu\n",
freq_hz); freq_hz);
return -EINVAL; return -EINVAL;
} }