// SPDX-License-Identifier: GPL-2.0-only
/*
* user_space . c - A simple user space Thermal events notifier
*
* Copyright ( C ) 2012 Intel Corp
* Copyright ( C ) 2012 Durgadoss R < durgadoss . r @ intel . com >
*
* ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~
*
* ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~
*/
#include <linux/slab.h>
#include <linux/thermal.h>
#include "thermal_core.h"
static int user_space_bind(struct thermal_zone_device *tz)
{
pr_info_once("Consider using thermal netlink events interface\n" );
return 0 ;
}
/**
* user_space_trip_crossed - Notify user space about trip crossing events
* @ tz : thermal_zone_device
* @ trip : trip point
* @ upward : whether or not the trip has been crossed on the way up
*
* This function notifies the user space through UEvents .
*/
static void user_space_trip_crossed(struct thermal_zone_device *tz,
const struct thermal_trip *trip,
bool upward)
{
char *thermal_prop[5 ];
int i;
lockdep_assert_held(&tz->lock);
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" ,
thermal_zone_trip_id(tz, 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]);
}
static struct thermal_governor thermal_gov_user_space = {
.name = "user_space" ,
.trip_crossed = user_space_trip_crossed,
.bind_to_tz = user_space_bind,
};
THERMAL_GOVERNOR_DECLARE(thermal_gov_user_space);
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¤ Dauer der Verarbeitung: 0.9 Sekunden
(vorverarbeitet am 2026-09-29)
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