thermal: user_space gov: Add additional information in uevent

Add additional properties:
NAME= Thermal zone type
TEMP= Temperature sample value
TRIP= Violated trip index
EVENT= The notification event (new temperature sample, trip violation
trip changed)

This is the additional information to what kobject_uevent already
provides. So it will not impact existing user spaces.

Signed-off-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
Signed-off-by: Zhang Rui <rui.zhang@intel.com>

1 files changed, 13 insertions, 2 deletions

diff --git a/drivers/thermal/user_space.c b/drivers/thermal/user_space.c
index 10adcddc8821..c908150c268d 100644
--- a/drivers/thermal/user_space.c
+++ b/drivers/thermal/user_space.c
@@ -23,19 +23,30 @@
  */
 
 #include <linux/thermal.h>
-
+#include <linux/slab.h>
 #include "thermal_core.h"
 
 /**
  * notify_user_space - Notifies user space about thermal events
  * @tz - thermal_zone_device
+ * @trip - Trip point index
  *
  * This function notifies the user space through UEvents.
  */
 static int notify_user_space(struct thermal_zone_device *tz, int trip)
 {
+        char *thermal_prop[5];
+        int i;
+
         mutex_lock(&tz->lock);
-        kobject_uevent(&tz->device.kobj, KOBJ_CHANGE);
+        thermal_prop[0] = kasprintf(GFP_KERNEL, "NAME=%s", tz->type);
+        thermal_prop[1] = kasprintf(GFP_KERNEL, "TEMP=%d", tz->temperature);
+        thermal_prop[2] = kasprintf(GFP_KERNEL, "TRIP=%d", trip);
+        thermal_prop[3] = kasprintf(GFP_KERNEL, "EVENT=%d", tz->notify_event);
+        thermal_prop[4] = NULL;
+        kobject_uevent_env(&tz->device.kobj, KOBJ_CHANGE, thermal_prop);
+        for (i = 0; i < 4; ++i)
+                kfree(thermal_prop[i]);
         mutex_unlock(&tz->lock);
         return 0;
 }