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Commit 998d924b authored by Srinivas Pandruvada's avatar Srinivas Pandruvada Committed by Zhang Rui
Browse files

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: default avatarSrinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
Signed-off-by: default avatarZhang Rui <rui.zhang@intel.com>
parent 0e70f466

drivers/thermal/user_space.c

+13 −2
Original line number Diff line number Diff line
@@ -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;

}