Currently the naming of a cooling device is just a cooling technique
followed by a number. When there are multiple cooling devices using
the same technique, it is impossible to clearly identify the related
device as this one is just a number.
For instance:
thermal-cpufreq-0
thermal-cpufreq-1
etc ...
The 'thermal' prefix is redundant with the subsystem namespace. This
patch removes the 'thermal prefix and changes the number by the device
name. So the naming above becomes:
cpufreq-cpu0
cpufreq-cpu4
etc ...
Signed-off-by: Daniel Lezcano <daniel.lezc...@linaro.org>
---
drivers/thermal/cpufreq_cooling.c | 28 +++++++---------------------
1 file changed, 7 insertions(+), 21 deletions(-)
diff --git a/drivers/thermal/cpufreq_cooling.c
b/drivers/thermal/cpufreq_cooling.c
index 10af3341e5ea..cf0332bbdcd3 100644
--- a/drivers/thermal/cpufreq_cooling.c
+++ b/drivers/thermal/cpufreq_cooling.c
@@ -13,6 +13,7 @@
#include <linux/cpu.h>
#include <linux/cpufreq.h>
#include <linux/cpu_cooling.h>
+#include <linux/device.h>
#include <linux/energy_model.h>
#include <linux/err.h>
#include <linux/export.h>
@@ -50,8 +51,6 @@ struct time_in_idle {
/**
* 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.
@@ -69,7 +68,6 @@ struct time_in_idle {
* cpufreq_cooling_device.
*/
struct cpufreq_cooling_device {
- int id;
u32 last_load;
unsigned int cpufreq_state;
unsigned int max_level;
@@ -82,7 +80,6 @@ struct cpufreq_cooling_device {
struct freq_qos_request qos_req;
};
-static DEFINE_IDA(cpufreq_ida);
static DEFINE_MUTEX(cooling_list_lock);
static LIST_HEAD(cpufreq_cdev_list);
@@ -528,11 +525,11 @@ __cpufreq_cooling_register(struct device_node *np,
{
struct thermal_cooling_device *cdev;
struct cpufreq_cooling_device *cpufreq_cdev;
- char dev_name[THERMAL_NAME_LENGTH];
unsigned int i;
struct device *dev;
int ret;
struct thermal_cooling_device_ops *cooling_ops;
+ char name[THERMAL_NAME_LENGTH];
dev = get_cpu_device(policy->cpu);
if (unlikely(!dev)) {
@@ -567,16 +564,6 @@ __cpufreq_cooling_register(struct device_node *np,
/* 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
@@ -591,7 +578,7 @@ __cpufreq_cooling_register(struct device_node *np,
pr_err("%s: unsorted frequency tables are not supported\n",
__func__);
cdev = ERR_PTR(-EINVAL);
- goto remove_ida;
+ goto free_idle_time;
}
ret = freq_qos_add_request(&policy->constraints,
@@ -601,10 +588,12 @@ __cpufreq_cooling_register(struct device_node *np,
pr_err("%s: Failed to add freq constraint (%d)\n", __func__,
ret);
cdev = ERR_PTR(ret);
- goto remove_ida;
+ goto free_idle_time;
}
- cdev = thermal_of_cooling_device_register(np, dev_name, cpufreq_cdev,
+ snprintf(name, sizeof(name), "cpufreq-%s", dev_name(dev));
+
+ cdev = thermal_of_cooling_device_register(np, name, cpufreq_cdev,
cooling_ops);
if (IS_ERR(cdev))
goto remove_qos_req;
@@ -617,8 +606,6 @@ __cpufreq_cooling_register(struct device_node *np,
remove_qos_req:
freq_qos_remove_request(&cpufreq_cdev->qos_req);
-remove_ida:
- ida_simple_remove(&cpufreq_ida, cpufreq_cdev->id);
free_idle_time:
free_idle_time(cpufreq_cdev);
free_cdev:
@@ -712,7 +699,6 @@ void cpufreq_cooling_unregister(struct
thermal_cooling_device *cdev)
thermal_cooling_device_unregister(cdev);
freq_qos_remove_request(&cpufreq_cdev->qos_req);
- ida_simple_remove(&cpufreq_ida, cpufreq_cdev->id);
free_idle_time(cpufreq_cdev);
kfree(cpufreq_cdev);
}
--
2.17.1
