/*
 *  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 <linux/slab.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,
};

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);
}

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<div class='content'><div class='cgit-panel'><b>diff options</b><form method='get'><input type='hidden' name='h' value='packet-loop-back'/><table><tr><td colspan='2'/></tr><tr><td class='label'>context:</td><td class='ctrl'><select name='context' onchange='this.form.submit();'><option value='1'>1</option><option value='2'>2</option><option value='3' selected='selected'>3</option><option value='4'>4</option><option value='5'>5</option><option value='6'>6</option><option value='7'>7</option><option value='8'>8</option><option value='9'>9</option><option value='10'>10</option><option value='15'>15</option><option value='20'>20</option><option value='25'>25</option><option value='30'>30</option><option value='35'>35</option><option value='40'>40</option></select></td></tr><tr><td class='label'>space:</td><td class='ctrl'><select name='ignorews' onchange='this.form.submit();'><option value='0' selected='selected'>include</option><option value='1'>ignore</option></select></td></tr><tr><td class='label'>mode:</td><td class='ctrl'><select name='dt' onchange='this.form.submit();'><option value='0' selected='selected'>unified</option><option value='1'>ssdiff</option><option value='2'>stat only</option></select></td></tr><tr><td/><td class='ctrl'><noscript><input type='submit' value='reload'/></noscript></td></tr></table></form></div><table summary='commit info' class='commit-info'>
<tr><th>author</th><td>Tobias Klauser &lt;tklauser@distanz.ch&gt;</td><td class='right'>2016-12-16 16:27:43 +0100</td></tr>
<tr><th>committer</th><td>Tobias Klauser &lt;tklauser@distanz.ch&gt;</td><td class='right'>2016-12-19 13:04:09 +0100</td></tr>
<tr><th>commit</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/?h=packet-loop-back&amp;id=4e28e05aac78dca759c4b2b374ec99306f7ae8ae'>4e28e05aac78dca759c4b2b374ec99306f7ae8ae</a> (<a href='/cgit.cgi/linux/net-next.git/patch/?id=4e28e05aac78dca759c4b2b374ec99306f7ae8ae'>patch</a>)</td></tr>
<tr><th>tree</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/tree/?h=packet-loop-back'>d13b7d82d6263784654faeaf60882e68460d5797</a></td></tr>
<tr><th>parent</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/?h=packet-loop-back&amp;id=93d8be41c619ea6d4b29a1cefd15b60d2d82e764'>93d8be41c619ea6d4b29a1cefd15b60d2d82e764</a> (<a href='/cgit.cgi/linux/net-next.git/diff/?h=packet-loop-back&amp;id2=93d8be41c619ea6d4b29a1cefd15b60d2d82e764'>diff</a>)</td></tr></table>
<div class='commit-subject'>net: packet: Introduce PACKET_XMIT_RECEIVE socket option<span class='decoration'><a class='branch-deco' href='/cgit.cgi/linux/net-next.git/log/?h=packet-loop-back'>packet-loop-back</a></span></div><div class='commit-msg'>The PACKET_XMIT_RECEIVE socket options allows to immediately pump
packets sent through PF_PACKET back into the network stack via
dev_forward_skb() instead of submitting them to the device driver using
dev_queue_xmit(). This feature might be useful to load the network
stack with a lot of packets, similar to pktgen. Enable the
setting using:

    int one = 1;
    setsockopt(fd, SOL_PACKET, PACKET_XMIT_RECEIVE, &amp;one, sizeof(one));

By default, PACKET_XMIT_RECEIVE is disabled and needs to be explicitly
enabled on PF_PACKET sockets.

Joint work with Daniel Borkmann.

Suggested-by: Daniel Borkmann &lt;daniel@iogearbox.net&gt;
Cc: Willem de Bruijn &lt;willemdebruijn.kernel@gmail.com&gt;
Cc: Eric Dumazet &lt;edumazet@google.com&gt;
Cc: Jesper Dangaard Brouer &lt;brouer@redhat.com&gt;
Signed-off-by: Tobias Klauser &lt;tklauser@distanz.ch&gt;
</div><div class='diffstat-header'><a href='/cgit.cgi/linux/net-next.git/diff/?h=packet-loop-back'>Diffstat</a></div><table summary='diffstat' class='diffstat'>