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8c35b1f472
Modify the governor .throttle() callback definition so that it takes a trip pointer instead of a trip index as its second argument, adjust the governors accordingly and update the core code invoking .throttle(). This causes the governors to become independent of the representation of the list of trips in the thermal zone structure. This change is not expected to alter the general functionality. Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> Reviewed-by: Daniel Lezcano <daniel.lezcano@linaro.org>
59 lines
1.6 KiB
C
59 lines
1.6 KiB
C
// SPDX-License-Identifier: GPL-2.0-only
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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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* ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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*/
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#include <linux/slab.h>
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#include <linux/thermal.h>
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#include "thermal_core.h"
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static int user_space_bind(struct thermal_zone_device *tz)
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{
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pr_info_once("Consider using thermal netlink events interface\n");
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return 0;
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}
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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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* @trip: trip point
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*
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* This function notifies the user space through UEvents.
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*/
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static int notify_user_space(struct thermal_zone_device *tz,
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const struct thermal_trip *trip)
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{
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char *thermal_prop[5];
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int i;
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lockdep_assert_held(&tz->lock);
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thermal_prop[0] = kasprintf(GFP_KERNEL, "NAME=%s", tz->type);
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thermal_prop[1] = kasprintf(GFP_KERNEL, "TEMP=%d", tz->temperature);
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thermal_prop[2] = kasprintf(GFP_KERNEL, "TRIP=%d",
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thermal_zone_trip_id(tz, trip));
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thermal_prop[3] = kasprintf(GFP_KERNEL, "EVENT=%d", tz->notify_event);
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thermal_prop[4] = NULL;
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kobject_uevent_env(&tz->device.kobj, KOBJ_CHANGE, thermal_prop);
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for (i = 0; i < 4; ++i)
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kfree(thermal_prop[i]);
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return 0;
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}
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static 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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.bind_to_tz = user_space_bind,
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};
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THERMAL_GOVERNOR_DECLARE(thermal_gov_user_space);
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