@@ -638,6 +638,57 @@ void thermal_zone_device_rebind_exception(struct thermal_zone_device *tz,
mutex_unlock(&thermal_list_lock);
}
+int for_each_thermal_governor(int (*cb)(struct thermal_governor *, void *),
+ void *data)
+{
+ struct thermal_governor *gov;
+ int ret = 0;
+
+ mutex_lock(&thermal_governor_lock);
+ list_for_each_entry(gov, &thermal_governor_list, governor_list) {
+ ret = cb(gov, data);
+ if (ret)
+ break;
+ }
+ mutex_unlock(&thermal_governor_lock);
+
+ return ret;
+}
+
+int for_each_thermal_cooling_device(int (*cb)(struct thermal_cooling_device *,
+ void *), void *data)
+{
+ struct thermal_cooling_device *cdev;
+ int ret = 0;
+
+ mutex_lock(&thermal_list_lock);
+ list_for_each_entry(cdev, &thermal_cdev_list, node) {
+ ret = cb(cdev, data);
+ if (ret)
+ break;
+ }
+ mutex_unlock(&thermal_list_lock);
+
+ return ret;
+}
+
+int for_each_thermal_zone(int (*cb)(struct thermal_zone_device *, void *),
+ void *data)
+{
+ struct thermal_zone_device *tz;
+ int ret = 0;
+
+ mutex_lock(&thermal_list_lock);
+ list_for_each_entry(tz, &thermal_tz_list, node) {
+ ret = cb(tz, data);
+ if (ret)
+ break;
+ }
+ mutex_unlock(&thermal_list_lock);
+
+ return ret;
+}
+
void thermal_zone_device_unbind_exception(struct thermal_zone_device *tz,
const char *cdev_type, size_t size)
{
@@ -41,6 +41,15 @@ extern struct thermal_governor *__governor_thermal_table_end[];
__governor < __governor_thermal_table_end; \
__governor++)
+int for_each_thermal_zone(int (*cb)(struct thermal_zone_device *, void *),
+ void *);
+
+int for_each_thermal_cooling_device(int (*cb)(struct thermal_cooling_device *,
+ void *), void *);
+
+int for_each_thermal_governor(int (*cb)(struct thermal_governor *, void *),
+ void *thermal_governor);
+
struct thermal_attr {
struct device_attribute attr;
char name[THERMAL_NAME_LENGTH];
The cdev, tz and governor list, as well as their respective locks are statically defined in the thermal_core.c file. In order to give a sane access to these list, like browsing all the thermal zones or all the cooling devices, let's define a set of helpers where we pass a callback as a parameter to be called for each thermal entity. We keep the self-encapsulation and ensure the locks are correctly taken when looking at the list. Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org> --- drivers/thermal/thermal_core.c | 51 ++++++++++++++++++++++++++++++++++ drivers/thermal/thermal_core.h | 9 ++++++ 2 files changed, 60 insertions(+)