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authorAmit Kucheria <amit.kucheria@linaro.org>2020-05-11 17:55:01 +0530
committerDaniel Lezcano <daniel.lezcano@linaro.org>2020-05-22 18:48:54 +0200
commit0015d9a2a72745308ef9728a746ff7b1e82138bc (patch)
tree9dd4e0dc208f154e26e4f6d56913aa8bad045873 /drivers/thermal/gov_user_space.c
parent6abea5d2af4cdd508b04d94ed9382c3710b99dfc (diff)
thermal/governors: Prefix all source files with gov_
Bang-bang governor source file is prefixed with gov_. Do the same for other governors for consistency so they're easy to find in the sources. Signed-off-by: Amit Kucheria <amit.kucheria@linaro.org> Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org> Link: https://lore.kernel.org/r/b9a85d3204712f14e320504948c12712dc0b291b.1589199124.git.amit.kucheria@linaro.org
Diffstat (limited to 'drivers/thermal/gov_user_space.c')
-rw-r--r--drivers/thermal/gov_user_space.c47
1 files changed, 47 insertions, 0 deletions
diff --git a/drivers/thermal/gov_user_space.c b/drivers/thermal/gov_user_space.c
new file mode 100644
index 000000000000..82a7198bbe71
--- /dev/null
+++ b/drivers/thermal/gov_user_space.c
@@ -0,0 +1,47 @@
+// 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"
+
+/**
+ * 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);
+ 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;
+}
+
+static struct thermal_governor thermal_gov_user_space = {
+ .name = "user_space",
+ .throttle = notify_user_space,
+};
+THERMAL_GOVERNOR_DECLARE(thermal_gov_user_space);