mirror of https://gitee.com/openkylin/linux.git
69 lines
2.0 KiB
C
69 lines
2.0 KiB
C
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/*
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* user_space.c - A simple user space Thermal events notifier
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*
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* Copyright (C) 2012 Intel Corp
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* Copyright (C) 2012 Durgadoss R <durgadoss.r@intel.com>
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*
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* ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; version 2 of the License.
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, write to the Free Software Foundation, Inc.,
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* 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
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*
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* ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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*/
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#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
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#include <linux/module.h>
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#include <linux/thermal.h>
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#include "thermal_core.h"
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/**
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* notify_user_space - Notifies user space about thermal events
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* @tz - thermal_zone_device
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*
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* This function notifies the user space through UEvents.
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*/
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int notify_user_space(struct thermal_zone_device *tz, int trip)
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{
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mutex_lock(&tz->lock);
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kobject_uevent(&tz->device.kobj, KOBJ_CHANGE);
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mutex_unlock(&tz->lock);
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return 0;
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}
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struct thermal_governor thermal_gov_user_space = {
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.name = "user_space",
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.throttle = notify_user_space,
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.owner = THIS_MODULE,
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};
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static int __init thermal_gov_user_space_init(void)
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{
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return thermal_register_governor(&thermal_gov_user_space);
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}
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static void __exit thermal_gov_user_space_exit(void)
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{
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thermal_unregister_governor(&thermal_gov_user_space);
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}
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/* This should load after thermal framework */
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fs_initcall(thermal_gov_user_space_init);
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module_exit(thermal_gov_user_space_exit);
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MODULE_AUTHOR("Durgadoss R");
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MODULE_DESCRIPTION("A user space Thermal notifier");
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MODULE_LICENSE("GPL");
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