[PATCH V3 15/17] thermal: cpu_cooling: don't store cpu_dev in cpufreq_cdev

Viresh Kumar
2017-04-19T05:32:53Z

'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>
---
drivers/thermal/cpu_cooling.c | 22 ++++++++++------------
1 file changed, 10 insertions(+), 12 deletions(-)

diff --git a/drivers/thermal/cpu_cooling.c b/drivers/thermal/cpu_cooling.c
index 762ddfc4e654..c85b217d16c8 100644
--- a/drivers/thermal/cpu_cooling.c
+++ b/drivers/thermal/cpu_cooling.c
@@ -87,7 +87,6 @@ struct time_in_idle {
* @node: list_head to link all cpufreq_cooling_device together.
* @last_load: load measured by the latest call to cpufreq_get_requested_power()
* @idle_time: idle time stats
- * @cpu_dev: the cpu_device of policy->cpu.
* @plat_get_static_power: callback to calculate the static power
*
* This structure is required for keeping information of each registered
@@ -104,7 +103,6 @@ struct cpufreq_cooling_device {
struct list_head node;
u32 last_load;
struct time_in_idle *idle_time;
- struct device *cpu_dev;
get_static_t plat_get_static_power;
};

@@ -255,8 +253,6 @@ static int update_freq_table(struct cpufreq_cooling_device *cpufreq_cdev,
freq_table[i].power = power;
}

- cpufreq_cdev->cpu_dev = dev;
-
return 0;
}

@@ -338,19 +334,22 @@ static int get_static_power(struct cpufreq_cooling_device *cpufreq_cdev,
{
struct dev_pm_opp *opp;
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;
+ struct device *dev;

- if (!cpufreq_cdev->plat_get_static_power || !cpufreq_cdev->cpu_dev) {
+ if (!cpufreq_cdev->plat_get_static_power) {
*power = 0;
return 0;
}

- opp = dev_pm_opp_find_freq_exact(cpufreq_cdev->cpu_dev, freq_hz,
- true);
+ dev = get_cpu_device(policy->cpu);
+ WARN_ON(!dev);
+
+ opp = dev_pm_opp_find_freq_exact(dev, freq_hz, true);
if (IS_ERR(opp)) {
- dev_warn_ratelimited(cpufreq_cdev->cpu_dev,
- "Failed to find OPP for frequency %lu: %ld\n",
+ dev_warn_ratelimited(dev, "Failed to find OPP for frequency %lu: %ld\n",
freq_hz, PTR_ERR(opp));
return -EINVAL;
}
@@ -359,8 +358,7 @@ static int get_static_power(struct cpufreq_cooling_device *cpufreq_cdev,
dev_pm_opp_put(opp);

if (voltage == 0) {
- dev_err_ratelimited(cpufreq_cdev->cpu_dev,
- "Failed to get voltage for frequency %lu\n",
+ dev_err_ratelimited(dev, "Failed to get voltage for frequency %lu\n",
freq_hz);
return -EINVAL;
}
--
2.12.0.432.g71c3a4f4ba37