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>

diff --git a/drivers/thermal/user_space.c b/drivers/thermal/user_space.c
index 10adcddc88211e9589f27b1ab6c79eaa75cb7fe7..c908150c268df049a33d0139b6c0e7bb585858d6 100644 (file)
--- 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;
 }