/*
 * net busy poll support
 * Copyright(c) 2013 Intel Corporation.
 *
 * This program is free software; you can redistribute it and/or modify it
 * under the terms and conditions of the GNU General Public License,
 * version 2, as published by the Free Software Foundation.
 *
 * This program is distributed in the hope 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.,
 * 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
 *
 * Author: Eliezer Tamir
 *
 * Contact Information:
 * e1000-devel Mailing List <e1000-devel@lists.sourceforge.net>
 */

#ifndef _LINUX_NET_BUSY_POLL_H
#define _LINUX_NET_BUSY_POLL_H

#include <linux/netdevice.h>
#include <net/ip.h>

#ifdef CONFIG_NET_RX_BUSY_POLL

struct napi_struct;
extern unsigned int sysctl_net_busy_read __read_mostly;
extern unsigned int sysctl_net_busy_poll __read_mostly;

/* return values from ndo_ll_poll */
#define LL_FLUSH_FAILED		-1
#define LL_FLUSH_BUSY		-2

static inline bool net_busy_loop_on(void)
{
	return sysctl_net_busy_poll;
}

static inline u64 busy_loop_us_clock(void)
{
	return local_clock() >> 10;
}

static inline unsigned long sk_busy_loop_end_time(struct sock *sk)
{
	return busy_loop_us_clock() + ACCESS_ONCE(sk->sk_ll_usec);
}

/* in poll/select we use the global sysctl_net_ll_poll value */
static inline unsigned long busy_loop_end_time(void)
{
	return busy_loop_us_clock() + ACCESS_ONCE(sysctl_net_busy_poll);
}

static inline bool sk_can_busy_loop(const struct sock *sk)
{
	return sk->sk_ll_usec && sk->sk_napi_id && !signal_pending(current);
}


static inline bool busy_loop_timeout(unsigned long end_time)
{
	unsigned long now = busy_loop_us_clock();

	return time_after(now, end_time);
}

bool sk_busy_loop(struct sock *sk, int nonblock);

/* used in the NIC receive handler to mark the skb */
static inline void skb_mark_napi_id(struct sk_buff *skb,
				    struct napi_struct *napi)
{
	skb->napi_id = napi->napi_id;
}


#else /* CONFIG_NET_RX_BUSY_POLL */
static inline unsigned long net_busy_loop_on(void)
{
	return 0;
}

static inline unsigned long busy_loop_end_time(void)
{
	return 0;
}

static inline bool sk_can_busy_loop(struct sock *sk)
{
	return false;
}

static inline void skb_mark_napi_id(struct sk_buff *skb,
				    struct napi_struct *napi)
{
}

static inline bool busy_loop_timeout(unsigned long end_time)
{
	return true;
}

static inline bool sk_busy_loop(struct sock *sk, int nonblock)
{
	return false;
}

#endif /* CONFIG_NET_RX_BUSY_POLL */

/* used in the protocol hanlder to propagate the napi_id to the socket */
static inline void sk_mark_napi_id(struct sock *sk, const struct sk_buff *skb)
{
#ifdef CONFIG_NET_RX_BUSY_POLL
	sk->sk_napi_id = skb->napi_id;
#endif
}

/* variant used for unconnected sockets */
static inline void sk_mark_napi_id_once(struct sock *sk,
					const struct sk_buff *skb)
{
#ifdef CONFIG_NET_RX_BUSY_POLL
	if (!sk->sk_napi_id)
		sk->sk_napi_id = skb->napi_id;
#endif
}

#endif /* _LINUX_NET_BUSY_POLL_H */
git.cgi/linux/net-next.git/commit/net/dccp/proto.c?h=nds-private-remove&amp;id=1372cef1c697d8aac0cc923f8aa2c37d790ec9ed'>proto.c</a></div><div class='content'><div class='cgit-panel'><b>diff options</b><form method='get'><input type='hidden' name='h' value='nds-private-remove'/><input type='hidden' name='id' value='1372cef1c697d8aac0cc923f8aa2c37d790ec9ed'/><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>Mark Rutland &lt;mark.rutland@arm.com&gt;</td><td class='right'>2017-01-25 19:30:09 +0000</td></tr>
<tr><th>committer</th><td>Mark Brown &lt;broonie@kernel.org&gt;</td><td class='right'>2017-01-25 21:05:37 +0000</td></tr>
<tr><th>commit</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/net/dccp/proto.c?h=nds-private-remove&amp;id=1372cef1c697d8aac0cc923f8aa2c37d790ec9ed'>1372cef1c697d8aac0cc923f8aa2c37d790ec9ed</a> (<a href='/cgit.cgi/linux/net-next.git/patch/net/dccp/proto.c?id=1372cef1c697d8aac0cc923f8aa2c37d790ec9ed'>patch</a>)</td></tr>
<tr><th>tree</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/tree/?h=nds-private-remove&amp;id=1372cef1c697d8aac0cc923f8aa2c37d790ec9ed'>ed5f350cd559bc15ae370f0c9fd280204e98597d</a> /<a href='/cgit.cgi/linux/net-next.git/tree/net/dccp/proto.c?h=nds-private-remove&amp;id=1372cef1c697d8aac0cc923f8aa2c37d790ec9ed'>net/dccp/proto.c</a></td></tr>
<tr><th>parent</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/net/dccp/proto.c?h=nds-private-remove&amp;id=d00b74613fb18dfd0a5aa99270ee2e72d5c808d7'>d00b74613fb18dfd0a5aa99270ee2e72d5c808d7</a> (<a href='/cgit.cgi/linux/net-next.git/diff/net/dccp/proto.c?h=nds-private-remove&amp;id=1372cef1c697d8aac0cc923f8aa2c37d790ec9ed&amp;id2=d00b74613fb18dfd0a5aa99270ee2e72d5c808d7'>diff</a>)</td></tr></table>
<div class='commit-subject'>regulator: fixed: Revert support for ACPI interface</div><div class='commit-msg'>This reverts commit 13bed58ce874 (regulator: fixed: add support for ACPI
interface).

While there does appear to be a practical need to manage regulators on ACPI
systems, using ad-hoc properties to describe regulators to the kernel presents
a number of problems (especially should ACPI gain first class support for such
things), and there are ongoing discussions as to how to manage this.

Until there is a rough consensus, revert commit 13bed58ce8748d43, which hasn't
been in a released kernel yet as discussed in [1] and the surrounding thread.

[1] http://lkml.kernel.org/r/20170125184949.x2wkoo7kbaaajkjk@sirena.org.uk

Signed-off-by: Mark Rutland &lt;mark.rutland@arm.com&gt;
Cc: Liam Girdwood &lt;lgirdwood@gmail.com&gt;
Cc: Lorenzo Pieralisi &lt;lorenzo.pieralisi@arm.com&gt;
Cc: Lu Baolu &lt;baolu.lu@linux.intel.com&gt;
Cc: Mark Brown &lt;broonie@kernel.org&gt;
Cc: Rafael J. Wysocki &lt;rafael@kernel.org&gt;
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Mark Brown &lt;broonie@kernel.org&gt;
</div><div class='diffstat-header'><a href='/cgit.cgi/linux/net-next.git/diff/?h=nds-private-remove&amp;id=1372cef1c697d8aac0cc923f8aa2c37d790ec9ed'>Diffstat</a> (limited to 'net/dccp/proto.c')</div><table summary='diffstat' class='diffstat'>