thermal: core: split available_policies_show()

This patch creates a helper to build a list of available governors.

Cc: Zhang Rui <rui.zhang@intel.com>
Cc: linux-pm@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Eduardo Valentin <edubezval@gmail.com>
Signed-off-by: Zhang Rui <rui.zhang@intel.com>

diff --git a/drivers/thermal/thermal_core.c b/drivers/thermal/thermal_core.c
index 23f138f..3d51184 100644 (file)
--- a/drivers/thermal/thermal_core.c
+++ b/drivers/thermal/thermal_core.c
@@ -779,6 +779,25 @@ exit:
        return ret;
 }
 
+int thermal_build_list_of_policies(char *buf)
+{
+       struct thermal_governor *pos;
+       ssize_t count = 0;
+       ssize_t size = PAGE_SIZE;
+
+       mutex_lock(&thermal_governor_lock);
+
+       list_for_each_entry(pos, &thermal_governor_list, governor_list) {
+               size = PAGE_SIZE - count;
+               count += scnprintf(buf + count, size, "%s ", pos->name);
+       }
+       count += scnprintf(buf + count, size, "\n");
+
+       mutex_unlock(&thermal_governor_lock);
+
+       return count;
+}
+
 /* sys I/F for thermal zone */
 
 #define to_thermal_zone(_dev) \
@@ -1048,21 +1067,7 @@ static ssize_t
 available_policies_show(struct device *dev, struct device_attribute *devattr,
                        char *buf)
 {
-       struct thermal_governor *pos;
-       ssize_t count = 0;
-       ssize_t size = PAGE_SIZE;
-
-       mutex_lock(&thermal_governor_lock);
-
-       list_for_each_entry(pos, &thermal_governor_list, governor_list) {
-               size = PAGE_SIZE - count;
-               count += scnprintf(buf + count, size, "%s ", pos->name);
-       }
-       count += scnprintf(buf + count, size, "\n");
-
-       mutex_unlock(&thermal_governor_lock);
-
-       return count;
+       return thermal_build_list_of_policies(buf);
 }
 
 static ssize_t

diff --git a/drivers/thermal/thermal_core.h b/drivers/thermal/thermal_core.h
index db65d3b..8994d2a 100644 (file)
--- a/drivers/thermal/thermal_core.h
+++ b/drivers/thermal/thermal_core.h
@@ -61,6 +61,7 @@ void thermal_zone_device_rebind_exception(struct thermal_zone_device *,
 void thermal_zone_device_unbind_exception(struct thermal_zone_device *,
                                          const char *, size_t);
 int thermal_zone_device_set_policy(struct thermal_zone_device *, char *);
+int thermal_build_list_of_policies(char *buf);
 
 #ifdef CONFIG_THERMAL_GOV_STEP_WISE
 int thermal_gov_step_wise_register(void);