Add the rt linux 4.1.3-rt3 as base

[kvmfornfv.git] / kernel / drivers / thermal / user_space.c

diff --git a/kernel/drivers/thermal/user_space.c b/kernel/drivers/thermal/user_space.c
new file mode 100644 (file)
index 0000000..10adcdd
--- /dev/null
+++ b/kernel/drivers/thermal/user_space.c
@@ -0,0 +1,57 @@
+/*
+ *  user_space.c - A simple user space Thermal events notifier
+ *
+ *  Copyright (C) 2012 Intel Corp
+ *  Copyright (C) 2012 Durgadoss R <durgadoss.r@intel.com>
+ *
+ *  ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ *
+ *  This program is free software; you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation; version 2 of the License.
+ *
+ *  This program is distributed in the hope that it will be useful, but
+ *  WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ *  General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License along
+ *  with this program; if not, write to the Free Software Foundation, Inc.,
+ *  59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
+ *
+ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ */
+
+#include <linux/thermal.h>
+
+#include "thermal_core.h"
+
+/**
+ * notify_user_space - Notifies user space about thermal events
+ * @tz - thermal_zone_device
+ *
+ * This function notifies the user space through UEvents.
+ */
+static int notify_user_space(struct thermal_zone_device *tz, int trip)
+{
+       mutex_lock(&tz->lock);
+       kobject_uevent(&tz->device.kobj, KOBJ_CHANGE);
+       mutex_unlock(&tz->lock);
+       return 0;
+}
+
+static struct thermal_governor thermal_gov_user_space = {
+       .name           = "user_space",
+       .throttle       = notify_user_space,
+};
+
+int thermal_gov_user_space_register(void)
+{
+       return thermal_register_governor(&thermal_gov_user_space);
+}
+
+void thermal_gov_user_space_unregister(void)
+{
+       thermal_unregister_governor(&thermal_gov_user_space);
+}
+