Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6.git

Conflicts:
	drivers/mtd/mtd_blkdevs.c

Merge Grant's device-tree bits so that we can apply the subsequent fixes.
Signed-off-by: NDavid Woodhouse <David.Woodhouse@intel.com>

CREDITS

@@ -3554,12 +3554,12 @@ E: cvance@nai.com
 D: portions of the Linux Security Module (LSM) framework and security modules
 
 N: Petr Vandrovec
-E: vandrove@vc.cvut.cz
+E: petr@vandrovec.name
 D: Small contributions to ncpfs
 D: Matrox framebuffer driver
-S: Chudenicka 8
-S: 10200 Prague 10, Hostivar
-S: Czech Republic
+S: 21513 Conradia Ct
+S: Cupertino, CA 95014
+S: USA
 
 N: Thibaut Varene
 E: T-Bone@parisc-linux.org

Documentation/ABI/obsolete/dv1394

-What:		dv1394 (a.k.a. "OHCI-DV I/O support" for FireWire)
-Contact:	linux1394-devel@lists.sourceforge.net
-Description:
-	New application development should use raw1394 + userspace libraries
-	instead, notably libiec61883 which is functionally equivalent.
-
-Users:
-	ffmpeg/libavformat (used by a variety of media players)
-	dvgrab v1.x (replaced by dvgrab2 on top of raw1394 and resp. libraries)

Documentation/ABI/removed/dv1394

+What:		dv1394 (a.k.a. "OHCI-DV I/O support" for FireWire)
+Date:		May 2010 (scheduled), finally removed in kernel v2.6.37
+Contact:	linux1394-devel@lists.sourceforge.net
+Description:
+	/dev/dv1394/* were character device files, one for each FireWire
+	controller and for NTSC and PAL respectively, from which DV data
+	could be received by read() or transmitted by write().  A few
+	ioctl()s allowed limited control.
+	This special-purpose interface has been superseded by libraw1394 +
+	libiec61883 which are functionally equivalent, support HDV, and
+	transparently work on top of the newer firewire kernel drivers.
+
+Users:
+	ffmpeg/libavformat (if configured for DV1394)

Documentation/ABI/removed/raw1394

+What:		raw1394 (a.k.a. "Raw IEEE1394 I/O support" for FireWire)
+Date:		May 2010 (scheduled), finally removed in kernel v2.6.37
+Contact:	linux1394-devel@lists.sourceforge.net
+Description:
+	/dev/raw1394 was a character device file that allowed low-level
+	access to FireWire buses.  Its major drawbacks were its inability
+	to implement sensible device security policies, and its low level
+	of abstraction that required userspace clients do duplicate much
+	of the kernel's ieee1394 core functionality.
+	Replaced by /dev/fw*, i.e. the <linux/firewire-cdev.h> ABI of
+	firewire-core.
+
+Users:
+	libraw1394 (works with firewire-cdev too, transparent to library ABI
+	users)

Documentation/ABI/removed/raw1394_legacy_isochronous

-What:		legacy isochronous ABI of raw1394 (1st generation iso ABI)
-Date:		June 2007 (scheduled), removed in kernel v2.6.23
-Contact:	linux1394-devel@lists.sourceforge.net
-Description:
-	The two request types RAW1394_REQ_ISO_SEND, RAW1394_REQ_ISO_LISTEN have
-	been deprecated for quite some time.  They are very inefficient as they
-	come with high interrupt load and several layers of callbacks for each
-	packet.  Because of these deficiencies, the video1394 and dv1394 drivers
-	and the 3rd-generation isochronous ABI in raw1394 (rawiso) were created.
-
-Users:
-	libraw1394 users via the long deprecated API raw1394_iso_write,
-	raw1394_start_iso_write, raw1394_start_iso_rcv, raw1394_stop_iso_rcv
-
-	libdc1394, which optionally uses these old libraw1394 calls
-	alternatively to the more efficient video1394 ABI

Documentation/ABI/removed/video1394

+What:		video1394 (a.k.a. "OHCI-1394 Video support" for FireWire)
+Date:		May 2010 (scheduled), finally removed in kernel v2.6.37
+Contact:	linux1394-devel@lists.sourceforge.net
+Description:
+	/dev/video1394/* were character device files, one for each FireWire
+	controller, which were used for isochronous I/O.  It was added as an
+	alternative to raw1394's isochronous I/O functionality which had
+	performance issues in its first generation.  Any video1394 user had
+	to use raw1394 + libraw1394 too because video1394 did not provide
+	asynchronous I/O for device discovery and configuration.
+	Replaced by /dev/fw*, i.e. the <linux/firewire-cdev.h> ABI of
+	firewire-core.
+
+Users:
+	libdc1394 (works with firewire-cdev too, transparent to library ABI
+	users)

Documentation/ABI/testing/sysfs-ata

+What:		/sys/class/ata_...
+Date:		August 2008
+Contact:	Gwendal Grignou<gwendal@google.com>
+Description:
+
+Provide a place in sysfs for storing the ATA topology of the system.  This allows
+retrieving various information about ATA objects.
+
+Files under /sys/class/ata_port
+-------------------------------
+
+	For each port, a directory ataX is created where X is the ata_port_id of
+	the port. The device parent is the ata host device.
+
+idle_irq (read)
+
+	Number of IRQ received by the port while idle [some ata HBA only].
+
+nr_pmp_links (read)
+
+	If a SATA Port Multiplier (PM) is connected, number of link behind it.
+
+Files under /sys/class/ata_link
+-------------------------------
+
+	Behind each port, there is a ata_link. If there is a SATA PM in the
+	topology, 15 ata_link objects are created.
+
+	If a link is behind a port, the directory name is linkX, where X is
+	ata_port_id of the port.
+	If a link is behind a PM, its name is linkX.Y where X is ata_port_id
+	of the parent port and Y the PM port.
+
+hw_sata_spd_limit
+
+	Maximum speed supported by the connected SATA device.
+
+sata_spd_limit
+
+	Maximum speed imposed by libata.
+
+sata_spd
+
+	Current speed of the link [1.5, 3Gps,...].
+
+Files under /sys/class/ata_device
+---------------------------------
+
+	Behind each link, up to two ata device are created.
+	The name of the directory is devX[.Y].Z where:
+	- X is ata_port_id of the port where the device is connected,
+	- Y the port of the PM if any, and
+	- Z the device id: for PATA, there is usually 2 devices [0,1],
+	only 1 for SATA.
+
+class
+	Device class. Can be "ata" for disk, "atapi" for packet device,
+	"pmp" for PM, or "none" if no device was found behind the link.
+
+dma_mode
+
+	Transfer modes supported by the device when in DMA mode.
+	Mostly used by PATA device.
+
+pio_mode
+
+	Transfer modes supported by the device when in PIO mode.
+	Mostly used by PATA device.
+
+xfer_mode
+
+	Current transfer mode.
+
+id
+
+	Cached result of IDENTIFY command, as described in ATA8 7.16 and 7.17.
+	Only valid if the device is not a PM.
+
+gscr
+
+	Cached result of the dump of PM GSCR register.
+	Valid registers are:
+	0: 	SATA_PMP_GSCR_PROD_ID,
+	1: 	SATA_PMP_GSCR_REV,
+	2: 	SATA_PMP_GSCR_PORT_INFO,
+	32:	SATA_PMP_GSCR_ERROR,
+	33:	SATA_PMP_GSCR_ERROR_EN,
+	64:	SATA_PMP_GSCR_FEAT,
+	96:	SATA_PMP_GSCR_FEAT_EN,
+	130:	SATA_PMP_GSCR_SII_GPIO
+	Only valid if the device is a PM.
+
+spdn_cnt
+
+	Number of time libata decided to lower the speed of link due to errors.
+
+ering
+
+	Formatted output of the error ring of the device.

Documentation/ABI/testing/sysfs-devices-power

@@ -77,3 +77,91 @@ Description:
 		devices this attribute is set to "enabled" by bus type code or
 		device drivers and in that cases it should be safe to leave the
 		default value.
+
+What:		/sys/devices/.../power/wakeup_count
+Date:		September 2010
+Contact:	Rafael J. Wysocki <rjw@sisk.pl>
+Description:
+		The /sys/devices/.../wakeup_count attribute contains the number
+		of signaled wakeup events associated with the device.  This
+		attribute is read-only.  If the device is not enabled to wake up
+		the system from sleep states, this attribute is empty.
+
+What:		/sys/devices/.../power/wakeup_active_count
+Date:		September 2010
+Contact:	Rafael J. Wysocki <rjw@sisk.pl>
+Description:
+		The /sys/devices/.../wakeup_active_count attribute contains the
+		number of times the processing of wakeup events associated with
+		the device was completed (at the kernel level).  This attribute
+		is read-only.  If the device is not enabled to wake up the
+		system from sleep states, this attribute is empty.
+
+What:		/sys/devices/.../power/wakeup_hit_count
+Date:		September 2010
+Contact:	Rafael J. Wysocki <rjw@sisk.pl>
+Description:
+		The /sys/devices/.../wakeup_hit_count attribute contains the
+		number of times the processing of a wakeup event associated with
+		the device might prevent the system from entering a sleep state.
+		This attribute is read-only.  If the device is not enabled to
+		wake up the system from sleep states, this attribute is empty.
+
+What:		/sys/devices/.../power/wakeup_active
+Date:		September 2010
+Contact:	Rafael J. Wysocki <rjw@sisk.pl>
+Description:
+		The /sys/devices/.../wakeup_active attribute contains either 1,
+		or 0, depending on whether or not a wakeup event associated with
+		the device is being processed (1).  This attribute is read-only.
+		If the device is not enabled to wake up the system from sleep
+		states, this attribute is empty.
+
+What:		/sys/devices/.../power/wakeup_total_time_ms
+Date:		September 2010
+Contact:	Rafael J. Wysocki <rjw@sisk.pl>
+Description:
+		The /sys/devices/.../wakeup_total_time_ms attribute contains
+		the total time of processing wakeup events associated with the
+		device, in milliseconds.  This attribute is read-only.  If the
+		device is not enabled to wake up the system from sleep states,
+		this attribute is empty.
+
+What:		/sys/devices/.../power/wakeup_max_time_ms
+Date:		September 2010
+Contact:	Rafael J. Wysocki <rjw@sisk.pl>
+Description:
+		The /sys/devices/.../wakeup_max_time_ms attribute contains
+		the maximum time of processing a single wakeup event associated
+		with the device, in milliseconds.  This attribute is read-only.
+		If the device is not enabled to wake up the system from sleep
+		states, this attribute is empty.
+
+What:		/sys/devices/.../power/wakeup_last_time_ms
+Date:		September 2010
+Contact:	Rafael J. Wysocki <rjw@sisk.pl>
+Description:
+		The /sys/devices/.../wakeup_last_time_ms attribute contains
+		the value of the monotonic clock corresponding to the time of
+		signaling the last wakeup event associated with the device, in
+		milliseconds.  This attribute is read-only.  If the device is
+		not enabled to wake up the system from sleep states, this
+		attribute is empty.
+
+What:		/sys/devices/.../power/autosuspend_delay_ms
+Date:		September 2010
+Contact:	Alan Stern <stern@rowland.harvard.edu>
+Description:
+		The /sys/devices/.../power/autosuspend_delay_ms attribute
+		contains the autosuspend delay value (in milliseconds).  Some
+		drivers do not want their device to suspend as soon as it
+		becomes idle at run time; they want the device to remain
+		inactive for a certain minimum period of time first.  That
+		period is called the autosuspend delay.  Negative values will
+		prevent the device from being suspended at run time (similar
+		to writing "on" to the power/control attribute).  Values >=
+		1000 will cause the autosuspend timer expiration to be rounded
+		up to the nearest second.
+
+		Not all drivers support this attribute.  If it isn't supported,
+		attempts to read or write it will yield I/O errors.

Documentation/ABI/testing/sysfs-driver-hid-roccat-pyra

+What:		/sys/bus/usb/devices/<busnum>-<devnum>:<config num>.<interface num>/actual_cpi
+Date:		August 2010
+Contact:	Stefan Achatz <erazor_de@users.sourceforge.net>
+Description:	It is possible to switch the cpi setting of the mouse with the
+		press of a button.
+		When read, this file returns the raw number of the actual cpi
+		setting reported by the mouse. This number has to be further
+		processed to receive the real dpi value.
+
+		VALUE DPI
+		1     400
+		2     800
+		4     1600
+
+		This file is readonly.
+
+What:		/sys/bus/usb/devices/<busnum>-<devnum>:<config num>.<interface num>/actual_profile
+Date:		August 2010
+Contact:	Stefan Achatz <erazor_de@users.sourceforge.net>
+Description:	When read, this file returns the number of the actual profile in
+		range 0-4.
+		This file is readonly.
+
+What:		/sys/bus/usb/devices/<busnum>-<devnum>:<config num>.<interface num>/firmware_version
+Date:		August 2010
+Contact:	Stefan Achatz <erazor_de@users.sourceforge.net>
+Description:	When read, this file returns the raw integer version number of the
+		firmware reported by the mouse. Using the integer value eases
+		further usage in other programs. To receive the real version
+		number the decimal point has to be shifted 2 positions to the
+		left. E.g. a returned value of 138 means 1.38
+		This file is readonly.
+
+What:		/sys/bus/usb/devices/<busnum>-<devnum>:<config num>.<interface num>/profile_settings
+Date:		August 2010
+Contact:	Stefan Achatz <erazor_de@users.sourceforge.net>
+Description:	The mouse can store 5 profiles which can be switched by the
+		press of a button. A profile is split in settings and buttons.
+		profile_settings holds informations like resolution, sensitivity
+		and light effects.
+		When written, this file lets one write the respective profile
+		settings back to the mouse. The data has to be 13 bytes long.
+		The mouse will reject invalid data.
+		Which profile to write is determined by the profile number
+		contained in the data.
+		This file is writeonly.
+
+What:		/sys/bus/usb/devices/<busnum>-<devnum>:<config num>.<interface num>/profile[1-5]_settings
+Date:		August 2010
+Contact:	Stefan Achatz <erazor_de@users.sourceforge.net>
+Description:	The mouse can store 5 profiles which can be switched by the
+		press of a button. A profile is split in settings and buttons.
+		profile_settings holds informations like resolution, sensitivity
+		and light effects.
+		When read, these files return the respective profile settings.
+		The returned data is 13 bytes in size.
+		This file is readonly.
+
+What:		/sys/bus/usb/devices/<busnum>-<devnum>:<config num>.<interface num>/profile_buttons
+Date:		August 2010
+Contact:	Stefan Achatz <erazor_de@users.sourceforge.net>
+Description:	The mouse can store 5 profiles which can be switched by the
+		press of a button. A profile is split in settings and buttons.
+		profile_buttons holds informations about button layout.
+		When written, this file lets one write the respective profile
+		buttons back to the mouse. The data has to be 19 bytes long.
+		The mouse will reject invalid data.
+		Which profile to write is determined by the profile number
+		contained in the data.
+		This file is writeonly.
+
+What:		/sys/bus/usb/devices/<busnum>-<devnum>:<config num>.<interface num>/profile[1-5]_buttons
+Date:		August 2010
+Contact:	Stefan Achatz <erazor_de@users.sourceforge.net>
+Description:	The mouse can store 5 profiles which can be switched by the
+		press of a button. A profile is split in settings and buttons.
+		profile_buttons holds informations about button layout.
+		When read, these files return the respective profile buttons.
+		The returned data is 19 bytes in size.
+		This file is readonly.
+
+What:		/sys/bus/usb/devices/<busnum>-<devnum>:<config num>.<interface num>/startup_profile
+Date:		August 2010
+Contact:	Stefan Achatz <erazor_de@users.sourceforge.net>
+Description:	The integer value of this attribute ranges from 0-4.
+                When read, this attribute returns the number of the profile
+                that's active when the mouse is powered on.
+		This file is readonly.
+
+What:		/sys/bus/usb/devices/<busnum>-<devnum>:<config num>.<interface num>/settings
+Date:		August 2010
+Contact:	Stefan Achatz <erazor_de@users.sourceforge.net>
+Description:	When read, this file returns the settings stored in the mouse.
+		The size of the data is 3 bytes and holds information on the
+		startup_profile.
+		When written, this file lets write settings back to the mouse.
+		The data has to be 3 bytes long. The mouse will reject invalid
+		data.

Documentation/ABI/testing/sysfs-module

+What:		/sys/module/pch_phub/drivers/.../pch_mac
+Date:		August 2010
+KernelVersion:	2.6.35
+Contact:	masa-korg@dsn.okisemi.com
+Description:	Write/read GbE MAC address.
+
+What:		/sys/module/pch_phub/drivers/.../pch_firmware
+Date:		August 2010
+KernelVersion:	2.6.35
+Contact:	masa-korg@dsn.okisemi.com
+Description:	Write/read Option ROM data.
+

Documentation/ABI/testing/sysfs-power

@@ -99,9 +99,38 @@ Description:
 
 		dmesg -s 1000000 | grep 'hash matches'
 
+		If you do not get any matches (or they appear to be false
+		positives), it is possible that the last PM event point
+		referred to a device created by a loadable kernel module.  In
+		this case cat /sys/power/pm_trace_dev_match (see below) after
+		your system is started up and the kernel modules are loaded.
+
 		CAUTION: Using it will cause your machine's real-time (CMOS)
 		clock to be set to a random invalid time after a resume.
 
+What;		/sys/power/pm_trace_dev_match
+Date:		October 2010
+Contact:	James Hogan <james@albanarts.com>
+Description:
+		The /sys/power/pm_trace_dev_match file contains the name of the
+		device associated with the last PM event point saved in the RTC
+		across reboots when pm_trace has been used.  More precisely it
+		contains the list of current devices (including those
+		registered by loadable kernel modules since boot) which match
+		the device hash in the RTC at boot, with a newline after each
+		one.
+
+		The advantage of this file over the hash matches printed to the
+		kernel log (see /sys/power/pm_trace), is that it includes
+		devices created after boot by loadable kernel modules.
+
+		Due to the small hash size necessary to fit in the RTC, it is
+		possible that more than one device matches the hash, in which
+		case further investigation is required to determine which
+		device is causing the problem.  Note that genuine RTC clock
+		values (such as when pm_trace has not been used), can still
+		match a device and output it's name here.
+
 What:		/sys/power/pm_async
 Date:		January 2009
 Contact:	Rafael J. Wysocki <rjw@sisk.pl>

Documentation/DocBook/80211.tmpl

+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE set PUBLIC "-//OASIS//DTD DocBook XML V4.1.2//EN"
+	"http://www.oasis-open.org/docbook/xml/4.1.2/docbookx.dtd" []>
+<set>
+  <setinfo>
+    <title>The 802.11 subsystems &ndash; for kernel developers</title>
+    <subtitle>
+      Explaining wireless 802.11 networking in the Linux kernel
+    </subtitle>
+
+    <copyright>
+      <year>2007-2009</year>
+      <holder>Johannes Berg</holder>
+    </copyright>
+
+    <authorgroup>
+      <author>
+        <firstname>Johannes</firstname>
+        <surname>Berg</surname>
+        <affiliation>
+          <address><email>johannes@sipsolutions.net</email></address>
+        </affiliation>
+      </author>
+    </authorgroup>
+
+    <legalnotice>
+      <para>
+        This documentation is free software; you can redistribute
+        it and/or modify it under the terms of the GNU General Public
+        License version 2 as published by the Free Software Foundation.
+      </para>
+      <para>
+        This documentation 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.
+      </para>
+      <para>
+        You should have received a copy of the GNU General Public
+        License along with this documentation; if not, write to the Free
+        Software Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+        MA 02111-1307 USA
+      </para>
+      <para>
+        For more details see the file COPYING in the source
+        distribution of Linux.
+      </para>
+    </legalnotice>
+
+    <abstract>
+      <para>
+        These books attempt to give a description of the
+        various subsystems that play a role in 802.11 wireless
+        networking in Linux. Since these books are for kernel
+        developers they attempts to document the structures
+        and functions used in the kernel as well as giving a
+        higher-level overview.
+      </para>
+      <para>
+	The reader is expected to be familiar with the 802.11
+	standard as published by the IEEE in 802.11-2007 (or
+	possibly later versions). References to this standard
+	will be given as "802.11-2007 8.1.5".
+      </para>
+    </abstract>
+  </setinfo>
+  <book id="cfg80211-developers-guide">
+    <bookinfo>
+      <title>The cfg80211 subsystem</title>
+
+      <abstract>
+!Pinclude/net/cfg80211.h Introduction
+      </abstract>
+    </bookinfo>
+      <chapter>
+      <title>Device registration</title>
+!Pinclude/net/cfg80211.h Device registration
+!Finclude/net/cfg80211.h ieee80211_band
+!Finclude/net/cfg80211.h ieee80211_channel_flags
+!Finclude/net/cfg80211.h ieee80211_channel
+!Finclude/net/cfg80211.h ieee80211_rate_flags
+!Finclude/net/cfg80211.h ieee80211_rate
+!Finclude/net/cfg80211.h ieee80211_sta_ht_cap
+!Finclude/net/cfg80211.h ieee80211_supported_band
+!Finclude/net/cfg80211.h cfg80211_signal_type
+!Finclude/net/cfg80211.h wiphy_params_flags
+!Finclude/net/cfg80211.h wiphy_flags
+!Finclude/net/cfg80211.h wiphy
+!Finclude/net/cfg80211.h wireless_dev
+!Finclude/net/cfg80211.h wiphy_new
+!Finclude/net/cfg80211.h wiphy_register
+!Finclude/net/cfg80211.h wiphy_unregister
+!Finclude/net/cfg80211.h wiphy_free
+
+!Finclude/net/cfg80211.h wiphy_name
+!Finclude/net/cfg80211.h wiphy_dev
+!Finclude/net/cfg80211.h wiphy_priv
+!Finclude/net/cfg80211.h priv_to_wiphy
+!Finclude/net/cfg80211.h set_wiphy_dev
+!Finclude/net/cfg80211.h wdev_priv
+      </chapter>
+      <chapter>
+      <title>Actions and configuration</title>
+!Pinclude/net/cfg80211.h Actions and configuration
+!Finclude/net/cfg80211.h cfg80211_ops
+!Finclude/net/cfg80211.h vif_params
+!Finclude/net/cfg80211.h key_params
+!Finclude/net/cfg80211.h survey_info_flags
+!Finclude/net/cfg80211.h survey_info
+!Finclude/net/cfg80211.h beacon_parameters
+!Finclude/net/cfg80211.h plink_actions
+!Finclude/net/cfg80211.h station_parameters
+!Finclude/net/cfg80211.h station_info_flags
+!Finclude/net/cfg80211.h rate_info_flags
+!Finclude/net/cfg80211.h rate_info
+!Finclude/net/cfg80211.h station_info
+!Finclude/net/cfg80211.h monitor_flags
+!Finclude/net/cfg80211.h mpath_info_flags
+!Finclude/net/cfg80211.h mpath_info
+!Finclude/net/cfg80211.h bss_parameters
+!Finclude/net/cfg80211.h ieee80211_txq_params
+!Finclude/net/cfg80211.h cfg80211_crypto_settings
+!Finclude/net/cfg80211.h cfg80211_auth_request
+!Finclude/net/cfg80211.h cfg80211_assoc_request
+!Finclude/net/cfg80211.h cfg80211_deauth_request
+!Finclude/net/cfg80211.h cfg80211_disassoc_request
+!Finclude/net/cfg80211.h cfg80211_ibss_params
+!Finclude/net/cfg80211.h cfg80211_connect_params
+!Finclude/net/cfg80211.h cfg80211_pmksa
+!Finclude/net/cfg80211.h cfg80211_send_rx_auth
+!Finclude/net/cfg80211.h cfg80211_send_auth_timeout
+!Finclude/net/cfg80211.h __cfg80211_auth_canceled
+!Finclude/net/cfg80211.h cfg80211_send_rx_assoc
+!Finclude/net/cfg80211.h cfg80211_send_assoc_timeout
+!Finclude/net/cfg80211.h cfg80211_send_deauth
+!Finclude/net/cfg80211.h __cfg80211_send_deauth
+!Finclude/net/cfg80211.h cfg80211_send_disassoc
+!Finclude/net/cfg80211.h __cfg80211_send_disassoc
+!Finclude/net/cfg80211.h cfg80211_ibss_joined
+!Finclude/net/cfg80211.h cfg80211_connect_result
+!Finclude/net/cfg80211.h cfg80211_roamed
+!Finclude/net/cfg80211.h cfg80211_disconnected
+!Finclude/net/cfg80211.h cfg80211_ready_on_channel
+!Finclude/net/cfg80211.h cfg80211_remain_on_channel_expired
+!Finclude/net/cfg80211.h cfg80211_new_sta
+!Finclude/net/cfg80211.h cfg80211_rx_mgmt
+!Finclude/net/cfg80211.h cfg80211_mgmt_tx_status
+!Finclude/net/cfg80211.h cfg80211_cqm_rssi_notify
+!Finclude/net/cfg80211.h cfg80211_michael_mic_failure
+      </chapter>
+      <chapter>
+      <title>Scanning and BSS list handling</title>
+!Pinclude/net/cfg80211.h Scanning and BSS list handling
+!Finclude/net/cfg80211.h cfg80211_ssid
+!Finclude/net/cfg80211.h cfg80211_scan_request
+!Finclude/net/cfg80211.h cfg80211_scan_done
+!Finclude/net/cfg80211.h cfg80211_bss
+!Finclude/net/cfg80211.h cfg80211_inform_bss_frame
+!Finclude/net/cfg80211.h cfg80211_inform_bss
+!Finclude/net/cfg80211.h cfg80211_unlink_bss
+!Finclude/net/cfg80211.h cfg80211_find_ie
+!Finclude/net/cfg80211.h ieee80211_bss_get_ie
+      </chapter>
+      <chapter>
+      <title>Utility functions</title>
+!Pinclude/net/cfg80211.h Utility functions
+!Finclude/net/cfg80211.h ieee80211_channel_to_frequency
+!Finclude/net/cfg80211.h ieee80211_frequency_to_channel
+!Finclude/net/cfg80211.h ieee80211_get_channel
+!Finclude/net/cfg80211.h ieee80211_get_response_rate
+!Finclude/net/cfg80211.h ieee80211_hdrlen
+!Finclude/net/cfg80211.h ieee80211_get_hdrlen_from_skb
+!Finclude/net/cfg80211.h ieee80211_radiotap_iterator
+      </chapter>
+      <chapter>
+      <title>Data path helpers</title>
+!Pinclude/net/cfg80211.h Data path helpers
+!Finclude/net/cfg80211.h ieee80211_data_to_8023
+!Finclude/net/cfg80211.h ieee80211_data_from_8023
+!Finclude/net/cfg80211.h ieee80211_amsdu_to_8023s
+!Finclude/net/cfg80211.h cfg80211_classify8021d
+      </chapter>
+      <chapter>
+      <title>Regulatory enforcement infrastructure</title>
+!Pinclude/net/cfg80211.h Regulatory enforcement infrastructure
+!Finclude/net/cfg80211.h regulatory_hint
+!Finclude/net/cfg80211.h wiphy_apply_custom_regulatory
+!Finclude/net/cfg80211.h freq_reg_info
+      </chapter>
+      <chapter>
+      <title>RFkill integration</title>
+!Pinclude/net/cfg80211.h RFkill integration
+!Finclude/net/cfg80211.h wiphy_rfkill_set_hw_state
+!Finclude/net/cfg80211.h wiphy_rfkill_start_polling
+!Finclude/net/cfg80211.h wiphy_rfkill_stop_polling
+      </chapter>
+      <chapter>
+      <title>Test mode</title>
+!Pinclude/net/cfg80211.h Test mode
+!Finclude/net/cfg80211.h cfg80211_testmode_alloc_reply_skb
+!Finclude/net/cfg80211.h cfg80211_testmode_reply
+!Finclude/net/cfg80211.h cfg80211_testmode_alloc_event_skb
+!Finclude/net/cfg80211.h cfg80211_testmode_event
+      </chapter>
+  </book>
+  <book id="mac80211-developers-guide">
+    <bookinfo>
+      <title>The mac80211 subsystem</title>
+      <abstract>
+!Pinclude/net/mac80211.h Introduction
+!Pinclude/net/mac80211.h Warning
+      </abstract>
+    </bookinfo>
+
+    <toc></toc>
+
+  <!--
+  Generally, this document shall be ordered by increasing complexity.
+  It is important to note that readers should be able to read only
+  the first few sections to get a working driver and only advanced
+  usage should require reading the full document.
+  -->
+
+    <part>
+      <title>The basic mac80211 driver interface</title>
+      <partintro>
+        <para>
+          You should read and understand the information contained
+          within this part of the book while implementing a driver.
+          In some chapters, advanced usage is noted, that may be
+          skipped at first.
+        </para>
+        <para>
+          This part of the book only covers station and monitor mode
+          functionality, additional information required to implement
+          the other modes is covered in the second part of the book.
+        </para>
+      </partintro>
+
+      <chapter id="basics">
+        <title>Basic hardware handling</title>
+        <para>TBD</para>
+        <para>
+          This chapter shall contain information on getting a hw
+          struct allocated and registered with mac80211.
+        </para>
+        <para>
+          Since it is required to allocate rates/modes before registering
+          a hw struct, this chapter shall also contain information on setting
+          up the rate/mode structs.
+        </para>
+        <para>
+          Additionally, some discussion about the callbacks and
+          the general programming model should be in here, including
+          the definition of ieee80211_ops which will be referred to
+          a lot.
+        </para>
+        <para>
+          Finally, a discussion of hardware capabilities should be done
+          with references to other parts of the book.
+        </para>
+  <!-- intentionally multiple !F lines to get proper order -->
+!Finclude/net/mac80211.h ieee80211_hw
+!Finclude/net/mac80211.h ieee80211_hw_flags
+!Finclude/net/mac80211.h SET_IEEE80211_DEV
+!Finclude/net/mac80211.h SET_IEEE80211_PERM_ADDR
+!Finclude/net/mac80211.h ieee80211_ops
+!Finclude/net/mac80211.h ieee80211_alloc_hw
+!Finclude/net/mac80211.h ieee80211_register_hw
+!Finclude/net/mac80211.h ieee80211_get_tx_led_name
+!Finclude/net/mac80211.h ieee80211_get_rx_led_name
+!Finclude/net/mac80211.h ieee80211_get_assoc_led_name
+!Finclude/net/mac80211.h ieee80211_get_radio_led_name
+!Finclude/net/mac80211.h ieee80211_unregister_hw
+!Finclude/net/mac80211.h ieee80211_free_hw
+      </chapter>
+
+      <chapter id="phy-handling">
+        <title>PHY configuration</title>
+        <para>TBD</para>
+        <para>
+          This chapter should describe PHY handling including
+          start/stop callbacks and the various structures used.
+        </para>
+!Finclude/net/mac80211.h ieee80211_conf
+!Finclude/net/mac80211.h ieee80211_conf_flags
+      </chapter>
+
+      <chapter id="iface-handling">
+        <title>Virtual interfaces</title>
+        <para>TBD</para>
+        <para>
+          This chapter should describe virtual interface basics
+          that are relevant to the driver (VLANs, MGMT etc are not.)
+          It should explain the use of the add_iface/remove_iface
+          callbacks as well as the interface configuration callbacks.
+        </para>
+        <para>Things related to AP mode should be discussed there.</para>
+        <para>
+          Things related to supporting multiple interfaces should be
+          in the appropriate chapter, a BIG FAT note should be here about
+          this though and the recommendation to allow only a single
+          interface in STA mode at first!
+        </para>
+!Finclude/net/mac80211.h ieee80211_vif
+      </chapter>
+
+      <chapter id="rx-tx">
+        <title>Receive and transmit processing</title>
+        <sect1>
+          <title>what should be here</title>
+          <para>TBD</para>
+          <para>
+            This should describe the receive and transmit
+            paths in mac80211/the drivers as well as
+            transmit status handling.
+          </para>
+        </sect1>
+        <sect1>
+          <title>Frame format</title>
+!Pinclude/net/mac80211.h Frame format
+        </sect1>
+        <sect1>
+          <title>Packet alignment</title>
+!Pnet/mac80211/rx.c Packet alignment
+        </sect1>
+        <sect1>
+          <title>Calling into mac80211 from interrupts</title>
+!Pinclude/net/mac80211.h Calling mac80211 from interrupts
+        </sect1>
+        <sect1>
+          <title>functions/definitions</title>
+!Finclude/net/mac80211.h ieee80211_rx_status
+!Finclude/net/mac80211.h mac80211_rx_flags
+!Finclude/net/mac80211.h ieee80211_tx_info
+!Finclude/net/mac80211.h ieee80211_rx
+!Finclude/net/mac80211.h ieee80211_rx_irqsafe
+!Finclude/net/mac80211.h ieee80211_tx_status
+!Finclude/net/mac80211.h ieee80211_tx_status_irqsafe
+!Finclude/net/mac80211.h ieee80211_rts_get
+!Finclude/net/mac80211.h ieee80211_rts_duration
+!Finclude/net/mac80211.h ieee80211_ctstoself_get
+!Finclude/net/mac80211.h ieee80211_ctstoself_duration
+!Finclude/net/mac80211.h ieee80211_generic_frame_duration
+!Finclude/net/mac80211.h ieee80211_wake_queue
+!Finclude/net/mac80211.h ieee80211_stop_queue
+!Finclude/net/mac80211.h ieee80211_wake_queues
+!Finclude/net/mac80211.h ieee80211_stop_queues
+        </sect1>
+      </chapter>
+
+      <chapter id="filters">
+        <title>Frame filtering</title>
+!Pinclude/net/mac80211.h Frame filtering
+!Finclude/net/mac80211.h ieee80211_filter_flags
+      </chapter>
+    </part>
+
+    <part id="advanced">
+      <title>Advanced driver interface</title>
+      <partintro>
+        <para>
+         Information contained within this part of the book is
+         of interest only for advanced interaction of mac80211
+         with drivers to exploit more hardware capabilities and
+         improve performance.
+        </para>
+      </partintro>
+
+      <chapter id="hardware-crypto-offload">
+        <title>Hardware crypto acceleration</title>
+!Pinclude/net/mac80211.h Hardware crypto acceleration
+  <!-- intentionally multiple !F lines to get proper order -->
+!Finclude/net/mac80211.h set_key_cmd
+!Finclude/net/mac80211.h ieee80211_key_conf
+!Finclude/net/mac80211.h ieee80211_key_flags
+      </chapter>
+
+      <chapter id="powersave">
+        <title>Powersave support</title>
+!Pinclude/net/mac80211.h Powersave support
+      </chapter>
+
+      <chapter id="beacon-filter">
+        <title>Beacon filter support</title>
+!Pinclude/net/mac80211.h Beacon filter support
+!Finclude/net/mac80211.h ieee80211_beacon_loss
+      </chapter>
+
+      <chapter id="qos">
+        <title>Multiple queues and QoS support</title>
+        <para>TBD</para>
+!Finclude/net/mac80211.h ieee80211_tx_queue_params
+      </chapter>
+
+      <chapter id="AP">
+        <title>Access point mode support</title>
+        <para>TBD</para>
+        <para>Some parts of the if_conf should be discussed here instead</para>
+        <para>
+          Insert notes about VLAN interfaces with hw crypto here or
+          in the hw crypto chapter.
+        </para>
+!Finclude/net/mac80211.h ieee80211_get_buffered_bc
+!Finclude/net/mac80211.h ieee80211_beacon_get
+      </chapter>
+
+      <chapter id="multi-iface">
+        <title>Supporting multiple virtual interfaces</title>
+        <para>TBD</para>
+        <para>
+          Note: WDS with identical MAC address should almost always be OK
+        </para>
+        <para>
+          Insert notes about having multiple virtual interfaces with
+          different MAC addresses here, note which configurations are
+          supported by mac80211, add notes about supporting hw crypto
+          with it.
+        </para>
+      </chapter>
+
+      <chapter id="hardware-scan-offload">
+        <title>Hardware scan offload</title>
+        <para>TBD</para>
+!Finclude/net/mac80211.h ieee80211_scan_completed
+      </chapter>
+    </part>
+
+    <part id="rate-control">
+      <title>Rate control interface</title>
+      <partintro>
+        <para>TBD</para>
+        <para>
+         This part of the book describes the rate control algorithm
+         interface and how it relates to mac80211 and drivers.
+        </para>
+      </partintro>
+      <chapter id="dummy">
+        <title>dummy chapter</title>
+        <para>TBD</para>
+      </chapter>
+    </part>
+
+    <part id="internal">
+      <title>Internals</title>
+      <partintro>
+        <para>TBD</para>
+        <para>
+         This part of the book describes mac80211 internals.
+        </para>
+      </partintro>
+
+      <chapter id="key-handling">
+        <title>Key handling</title>
+        <sect1>
+          <title>Key handling basics</title>
+!Pnet/mac80211/key.c Key handling basics
+        </sect1>
+        <sect1>
+          <title>MORE TBD</title>
+          <para>TBD</para>
+        </sect1>
+      </chapter>
+
+      <chapter id="rx-processing">
+        <title>Receive processing</title>
+        <para>TBD</para>
+      </chapter>
+
+      <chapter id="tx-processing">
+        <title>Transmit processing</title>
+        <para>TBD</para>
+      </chapter>
+
+      <chapter id="sta-info">
+        <title>Station info handling</title>
+        <sect1>
+          <title>Programming information</title>
+!Fnet/mac80211/sta_info.h sta_info
+!Fnet/mac80211/sta_info.h ieee80211_sta_info_flags
+        </sect1>
+        <sect1>
+          <title>STA information lifetime rules</title>
+!Pnet/mac80211/sta_info.c STA information lifetime rules
+        </sect1>
+      </chapter>
+
+      <chapter id="synchronisation">
+        <title>Synchronisation</title>
+        <para>TBD</para>
+        <para>Locking, lots of RCU</para>
+      </chapter>
+    </part>
+  </book>
+</set>

Documentation/DocBook/Makefile

@@ -12,7 +12,7 @@ DOCBOOKS := z8530book.xml mcabook.xml device-drivers.xml \
 	    kernel-api.xml filesystems.xml lsm.xml usb.xml kgdb.xml \
 	    gadget.xml libata.xml mtdnand.xml librs.xml rapidio.xml \
 	    genericirq.xml s390-drivers.xml uio-howto.xml scsi.xml \
-	    mac80211.xml debugobjects.xml sh.xml regulator.xml \
+	    80211.xml debugobjects.xml sh.xml regulator.xml \
 	    alsa-driver-api.xml writing-an-alsa-driver.xml \
 	    tracepoint.xml media.xml drm.xml
 

Documentation/DocBook/drm.tmpl

@@ -136,6 +136,7 @@
 #ifdef CONFIG_COMPAT
 		.compat_ioctl = i915_compat_ioctl,
 #endif
+		.llseek = noop_llseek,
 		},
 	.pci_driver = {
 		.name = DRIVER_NAME,

Documentation/DocBook/genericirq.tmpl

@@ -28,7 +28,7 @@
   </authorgroup>
 
   <copyright>
-   <year>2005-2006</year>
+   <year>2005-2010</year>
    <holder>Thomas Gleixner</holder>
   </copyright>
   <copyright>
@@ -100,6 +100,10 @@
 	  <listitem><para>Edge type</para></listitem>
 	  <listitem><para>Simple type</para></listitem>
 	</itemizedlist>
+	During the implementation we identified another type:
+	<itemizedlist>
+	  <listitem><para>Fast EOI type</para></listitem>
+	</itemizedlist>
 	In the SMP world of the __do_IRQ() super-handler another type
 	was identified:
 	<itemizedlist>
@@ -153,6 +157,7 @@
 	is still available. This leads to a kind of duality for the time
 	being. Over time the new model should be used in more and more
 	architectures, as it enables smaller and cleaner IRQ subsystems.
+	It's deprecated for three years now and about to be removed.
 	</para>
   </chapter>
   <chapter id="bugs">
@@ -217,6 +222,7 @@
 	  <itemizedlist>
 	  <listitem><para>handle_level_irq</para></listitem>
 	  <listitem><para>handle_edge_irq</para></listitem>
+	  <listitem><para>handle_fasteoi_irq</para></listitem>
 	  <listitem><para>handle_simple_irq</para></listitem>
 	  <listitem><para>handle_percpu_irq</para></listitem>
 	  </itemizedlist>
@@ -233,33 +239,33 @@
 		are used by the default flow implementations.
 		The following helper functions are implemented (simplified excerpt):
 		<programlisting>
-default_enable(irq)
+default_enable(struct irq_data *data)
 {
-	desc->chip->unmask(irq);
+	desc->chip->irq_unmask(data);
 }
 
-default_disable(irq)
+default_disable(struct irq_data *data)
 {
-	if (!delay_disable(irq))
-		desc->chip->mask(irq);
+	if (!delay_disable(data))
+		desc->chip->irq_mask(data);
 }
 
-default_ack(irq)
+default_ack(struct irq_data *data)
 {
-	chip->ack(irq);
+	chip->irq_ack(data);
 }
 
-default_mask_ack(irq)
+default_mask_ack(struct irq_data *data)
 {
-	if (chip->mask_ack) {
-		chip->mask_ack(irq);
+	if (chip->irq_mask_ack) {
+		chip->irq_mask_ack(data);
 	} else {
-		chip->mask(irq);
-		chip->ack(irq);
+		chip->irq_mask(data);
+		chip->irq_ack(data);
 	}
 }
 
-noop(irq)
+noop(struct irq_data *data))
 {
 }
 
@@ -278,12 +284,27 @@ noop(irq)
 		<para>
 		The following control flow is implemented (simplified excerpt):
 		<programlisting>
-desc->chip->start();
+desc->chip->irq_mask();
 handle_IRQ_event(desc->action);
-desc->chip->end();
+desc->chip->irq_unmask();
 		</programlisting>
 		</para>
-   	    </sect3>
+	    </sect3>
+	    <sect3 id="Default_FASTEOI_IRQ_flow_handler">
+		<title>Default Fast EOI IRQ flow handler</title>
+		<para>
+		handle_fasteoi_irq provides a generic implementation
+		for interrupts, which only need an EOI at the end of
+		the handler
+		</para>
+		<para>
+		The following control flow is implemented (simplified excerpt):
+		<programlisting>
+handle_IRQ_event(desc->action);
+desc->chip->irq_eoi();
+		</programlisting>
+		</para>
+	    </sect3>
 	    <sect3 id="Default_Edge_IRQ_flow_handler">
 	 	<title>Default Edge IRQ flow handler</title>
 		<para>
@@ -294,20 +315,19 @@ desc->chip->end();
 		The following control flow is implemented (simplified excerpt):
 		<programlisting>
 if (desc->status &amp; running) {
-	desc->chip->hold();
+	desc->chip->irq_mask();
 	desc->status |= pending | masked;
 	return;
 }
-desc->chip->start();
+desc->chip->irq_ack();
 desc->status |= running;
 do {
 	if (desc->status &amp; masked)
-		desc->chip->enable();
+		desc->chip->irq_unmask();
 	desc->status &amp;= ~pending;
 	handle_IRQ_event(desc->action);
 } while (status &amp; pending);
 desc->status &amp;= ~running;
-desc->chip->end();
 		</programlisting>
 		</para>
    	    </sect3>
@@ -342,9 +362,9 @@ handle_IRQ_event(desc->action);
 		<para>
 		The following control flow is implemented (simplified excerpt):
 		<programlisting>
-desc->chip->start();
 handle_IRQ_event(desc->action);
-desc->chip->end();
+if (desc->chip->irq_eoi)
+        desc->chip->irq_eoi();
 		</programlisting>
 		</para>
    	    </sect3>
@@ -375,8 +395,7 @@ desc->chip->end();
 	mechanism. (It's necessary to enable CONFIG_HARDIRQS_SW_RESEND when
 	you want to use the delayed interrupt disable feature and your
 	hardware is not capable of retriggering	an interrupt.)
-	The delayed interrupt disable can be runtime enabled, per interrupt,
-	by setting the IRQ_DELAYED_DISABLE flag in the irq_desc status field.
+	The delayed interrupt disable is not configurable.
 	</para>
 	</sect2>
     </sect1>
@@ -387,13 +406,13 @@ desc->chip->end();
 	contains all the direct chip relevant functions, which
 	can be utilized by the irq flow implementations.
 	  <itemizedlist>
-	  <listitem><para>ack()</para></listitem>
-	  <listitem><para>mask_ack() - Optional, recommended for performance</para></listitem>
-	  <listitem><para>mask()</para></listitem>
-	  <listitem><para>unmask()</para></listitem>
-	  <listitem><para>retrigger() - Optional</para></listitem>
-	  <listitem><para>set_type() - Optional</para></listitem>
-	  <listitem><para>set_wake() - Optional</para></listitem>
+	  <listitem><para>irq_ack()</para></listitem>
+	  <listitem><para>irq_mask_ack() - Optional, recommended for performance</para></listitem>
+	  <listitem><para>irq_mask()</para></listitem>
+	  <listitem><para>irq_unmask()</para></listitem>
+	  <listitem><para>irq_retrigger() - Optional</para></listitem>
+	  <listitem><para>irq_set_type() - Optional</para></listitem>
+	  <listitem><para>irq_set_wake() - Optional</para></listitem>
 	  </itemizedlist>
 	These primitives are strictly intended to mean what they say: ack means
 	ACK, masking means masking of an IRQ line, etc. It is up to the flow
@@ -458,6 +477,7 @@ desc->chip->end();
      <para>
      This chapter contains the autogenerated documentation of the internal functions.
      </para>
+!Ikernel/irq/irqdesc.c
 !Ikernel/irq/handle.c
 !Ikernel/irq/chip.c
   </chapter>

Documentation/DocBook/kernel-api.tmpl

@@ -257,7 +257,8 @@ X!Earch/x86/kernel/mca_32.c
 !Iblock/blk-sysfs.c
 !Eblock/blk-settings.c
 !Eblock/blk-exec.c
-!Eblock/blk-barrier.c
+!Eblock/blk-flush.c
+!Eblock/blk-lib.c
 !Eblock/blk-tag.c
 !Iblock/blk-tag.c
 !Eblock/blk-integrity.c

Documentation/DocBook/kernel-locking.tmpl

@@ -1645,7 +1645,9 @@ the amount of locking which needs to be done.
       all the readers who were traversing the list when we deleted the
       element are finished.  We use <function>call_rcu()</function> to
       register a callback which will actually destroy the object once
-      the readers are finished.
+      all pre-existing readers are finished.  Alternatively,
+      <function>synchronize_rcu()</function> may be used to block until
+      all pre-existing are finished.
     </para>
     <para>
       But how does Read Copy Update know when the readers are
@@ -1714,7 +1716,7 @@ the amount of locking which needs to be done.
 -        object_put(obj);
 +        list_del_rcu(&amp;obj-&gt;list);
          cache_num--;
-+        call_rcu(&amp;obj-&gt;rcu, cache_delete_rcu, obj);
++        call_rcu(&amp;obj-&gt;rcu, cache_delete_rcu);
  }
 
  /* Must be holding cache_lock */
@@ -1725,14 +1727,6 @@ the amount of locking which needs to be done.
          if (++cache_num > MAX_CACHE_SIZE) {
                  struct object *i, *outcast = NULL;
                  list_for_each_entry(i, &amp;cache, list) {
-@@ -85,6 +94,7 @@
-         obj-&gt;popularity = 0;
-         atomic_set(&amp;obj-&gt;refcnt, 1); /* The cache holds a reference */
-         spin_lock_init(&amp;obj-&gt;lock);
-+        INIT_RCU_HEAD(&amp;obj-&gt;rcu);
-
-         spin_lock_irqsave(&amp;cache_lock, flags);
-         __cache_add(obj);
 @@ -104,12 +114,11 @@
  struct object *cache_find(int id)
  {

Documentation/DocBook/mac80211.tmpl

-<?xml version="1.0" encoding="UTF-8"?>
-<!DOCTYPE book PUBLIC "-//OASIS//DTD DocBook XML V4.1.2//EN"
-	"http://www.oasis-open.org/docbook/xml/4.1.2/docbookx.dtd" []>
-
-<book id="mac80211-developers-guide">
-  <bookinfo>
-    <title>The mac80211 subsystem for kernel developers</title>
-
-    <authorgroup>
-      <author>
-        <firstname>Johannes</firstname>
-        <surname>Berg</surname>
-        <affiliation>
-          <address><email>johannes@sipsolutions.net</email></address>
-        </affiliation>
-      </author>
-    </authorgroup>
-
-    <copyright>
-      <year>2007-2009</year>
-      <holder>Johannes Berg</holder>
-    </copyright>
-
-    <legalnotice>
-      <para>
-        This documentation is free software; you can redistribute
-        it and/or modify it under the terms of the GNU General Public
-        License version 2 as published by the Free Software Foundation.
-      </para>
-
-      <para>
-        This documentation 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.
-      </para>
-
-      <para>
-        You should have received a copy of the GNU General Public
-        License along with this documentation; if not, write to the Free
-        Software Foundation, Inc., 59 Temple Place, Suite 330, Boston,
-        MA 02111-1307 USA
-      </para>
-
-      <para>
-        For more details see the file COPYING in the source
-        distribution of Linux.
-      </para>
-    </legalnotice>
-
-    <abstract>
-!Pinclude/net/mac80211.h Introduction
-!Pinclude/net/mac80211.h Warning
-    </abstract>
-  </bookinfo>
-
-  <toc></toc>
-
-<!--
-Generally, this document shall be ordered by increasing complexity.
-It is important to note that readers should be able to read only
-the first few sections to get a working driver and only advanced
-usage should require reading the full document.
--->
-
-  <part>
-    <title>The basic mac80211 driver interface</title>
-    <partintro>
-      <para>
-        You should read and understand the information contained
-        within this part of the book while implementing a driver.
-        In some chapters, advanced usage is noted, that may be
-        skipped at first.
-      </para>
-      <para>
-        This part of the book only covers station and monitor mode
-        functionality, additional information required to implement
-        the other modes is covered in the second part of the book.
-      </para>
-    </partintro>
-
-    <chapter id="basics">
-      <title>Basic hardware handling</title>
-      <para>TBD</para>
-      <para>
-        This chapter shall contain information on getting a hw
-        struct allocated and registered with mac80211.
-      </para>
-      <para>
-        Since it is required to allocate rates/modes before registering
-        a hw struct, this chapter shall also contain information on setting
-        up the rate/mode structs.
-      </para>
-      <para>
-        Additionally, some discussion about the callbacks and
-        the general programming model should be in here, including
-        the definition of ieee80211_ops which will be referred to
-        a lot.
-      </para>
-      <para>
-        Finally, a discussion of hardware capabilities should be done
-        with references to other parts of the book.
-      </para>
-<!-- intentionally multiple !F lines to get proper order -->
-!Finclude/net/mac80211.h ieee80211_hw
-!Finclude/net/mac80211.h ieee80211_hw_flags
-!Finclude/net/mac80211.h SET_IEEE80211_DEV
-!Finclude/net/mac80211.h SET_IEEE80211_PERM_ADDR
-!Finclude/net/mac80211.h ieee80211_ops
-!Finclude/net/mac80211.h ieee80211_alloc_hw
-!Finclude/net/mac80211.h ieee80211_register_hw
-!Finclude/net/mac80211.h ieee80211_get_tx_led_name
-!Finclude/net/mac80211.h ieee80211_get_rx_led_name
-!Finclude/net/mac80211.h ieee80211_get_assoc_led_name
-!Finclude/net/mac80211.h ieee80211_get_radio_led_name
-!Finclude/net/mac80211.h ieee80211_unregister_hw
-!Finclude/net/mac80211.h ieee80211_free_hw
-    </chapter>
-
-    <chapter id="phy-handling">
-      <title>PHY configuration</title>
-      <para>TBD</para>
-      <para>
-        This chapter should describe PHY handling including
-        start/stop callbacks and the various structures used.
-      </para>
-!Finclude/net/mac80211.h ieee80211_conf
-!Finclude/net/mac80211.h ieee80211_conf_flags
-    </chapter>
-
-    <chapter id="iface-handling">
-      <title>Virtual interfaces</title>
-      <para>TBD</para>
-      <para>
-        This chapter should describe virtual interface basics
-        that are relevant to the driver (VLANs, MGMT etc are not.)
-        It should explain the use of the add_iface/remove_iface
-        callbacks as well as the interface configuration callbacks.
-      </para>
-      <para>Things related to AP mode should be discussed there.</para>
-      <para>
-        Things related to supporting multiple interfaces should be
-        in the appropriate chapter, a BIG FAT note should be here about
-        this though and the recommendation to allow only a single
-        interface in STA mode at first!
-      </para>
-!Finclude/net/mac80211.h ieee80211_vif
-    </chapter>
-
-    <chapter id="rx-tx">
-      <title>Receive and transmit processing</title>
-      <sect1>
-        <title>what should be here</title>
-        <para>TBD</para>
-        <para>
-          This should describe the receive and transmit
-          paths in mac80211/the drivers as well as
-          transmit status handling.
-        </para>
-      </sect1>
-      <sect1>
-        <title>Frame format</title>
-!Pinclude/net/mac80211.h Frame format
-      </sect1>
-      <sect1>
-        <title>Packet alignment</title>
-!Pnet/mac80211/rx.c Packet alignment
-      </sect1>
-      <sect1>
-        <title>Calling into mac80211 from interrupts</title>
-!Pinclude/net/mac80211.h Calling mac80211 from interrupts
-      </sect1>
-      <sect1>
-        <title>functions/definitions</title>
-!Finclude/net/mac80211.h ieee80211_rx_status
-!Finclude/net/mac80211.h mac80211_rx_flags
-!Finclude/net/mac80211.h ieee80211_tx_info
-!Finclude/net/mac80211.h ieee80211_rx
-!Finclude/net/mac80211.h ieee80211_rx_irqsafe
-!Finclude/net/mac80211.h ieee80211_tx_status
-!Finclude/net/mac80211.h ieee80211_tx_status_irqsafe
-!Finclude/net/mac80211.h ieee80211_rts_get
-!Finclude/net/mac80211.h ieee80211_rts_duration
-!Finclude/net/mac80211.h ieee80211_ctstoself_get
-!Finclude/net/mac80211.h ieee80211_ctstoself_duration
-!Finclude/net/mac80211.h ieee80211_generic_frame_duration
-!Finclude/net/mac80211.h ieee80211_wake_queue
-!Finclude/net/mac80211.h ieee80211_stop_queue
-!Finclude/net/mac80211.h ieee80211_wake_queues
-!Finclude/net/mac80211.h ieee80211_stop_queues
-      </sect1>
-    </chapter>
-
-    <chapter id="filters">
-      <title>Frame filtering</title>
-!Pinclude/net/mac80211.h Frame filtering
-!Finclude/net/mac80211.h ieee80211_filter_flags
-    </chapter>
-  </part>
-
-  <part id="advanced">
-    <title>Advanced driver interface</title>
-    <partintro>
-      <para>
-       Information contained within this part of the book is
-       of interest only for advanced interaction of mac80211
-       with drivers to exploit more hardware capabilities and
-       improve performance.
-      </para>
-    </partintro>
-
-    <chapter id="hardware-crypto-offload">
-      <title>Hardware crypto acceleration</title>
-!Pinclude/net/mac80211.h Hardware crypto acceleration
-<!-- intentionally multiple !F lines to get proper order -->
-!Finclude/net/mac80211.h set_key_cmd
-!Finclude/net/mac80211.h ieee80211_key_conf
-!Finclude/net/mac80211.h ieee80211_key_alg
-!Finclude/net/mac80211.h ieee80211_key_flags
-    </chapter>
-
-    <chapter id="powersave">
-      <title>Powersave support</title>
-!Pinclude/net/mac80211.h Powersave support
-    </chapter>
-
-    <chapter id="beacon-filter">
-      <title>Beacon filter support</title>
-!Pinclude/net/mac80211.h Beacon filter support
-!Finclude/net/mac80211.h ieee80211_beacon_loss
-    </chapter>
-
-    <chapter id="qos">
-      <title>Multiple queues and QoS support</title>
-      <para>TBD</para>
-!Finclude/net/mac80211.h ieee80211_tx_queue_params
-    </chapter>
-
-    <chapter id="AP">
-      <title>Access point mode support</title>
-      <para>TBD</para>
-      <para>Some parts of the if_conf should be discussed here instead</para>
-      <para>
-        Insert notes about VLAN interfaces with hw crypto here or
-        in the hw crypto chapter.
-      </para>
-!Finclude/net/mac80211.h ieee80211_get_buffered_bc
-!Finclude/net/mac80211.h ieee80211_beacon_get
-    </chapter>
-
-    <chapter id="multi-iface">
-      <title>Supporting multiple virtual interfaces</title>
-      <para>TBD</para>
-      <para>
-        Note: WDS with identical MAC address should almost always be OK
-      </para>
-      <para>
-        Insert notes about having multiple virtual interfaces with
-        different MAC addresses here, note which configurations are
-        supported by mac80211, add notes about supporting hw crypto
-        with it.
-      </para>
-    </chapter>
-
-    <chapter id="hardware-scan-offload">
-      <title>Hardware scan offload</title>
-      <para>TBD</para>
-!Finclude/net/mac80211.h ieee80211_scan_completed
-    </chapter>
-  </part>
-
-  <part id="rate-control">
-    <title>Rate control interface</title>
-    <partintro>
-      <para>TBD</para>
-      <para>
-       This part of the book describes the rate control algorithm
-       interface and how it relates to mac80211 and drivers.
-      </para>
-    </partintro>
-    <chapter id="dummy">
-      <title>dummy chapter</title>
-      <para>TBD</para>
-    </chapter>
-  </part>
-
-  <part id="internal">
-    <title>Internals</title>
-    <partintro>
-      <para>TBD</para>
-      <para>
-       This part of the book describes mac80211 internals.
-      </para>
-    </partintro>
-
-    <chapter id="key-handling">
-      <title>Key handling</title>
-      <sect1>
-        <title>Key handling basics</title>
-!Pnet/mac80211/key.c Key handling basics
-      </sect1>
-      <sect1>
-        <title>MORE TBD</title>
-        <para>TBD</para>
-      </sect1>
-    </chapter>
-
-    <chapter id="rx-processing">
-      <title>Receive processing</title>
-      <para>TBD</para>
-    </chapter>
-
-    <chapter id="tx-processing">
-      <title>Transmit processing</title>
-      <para>TBD</para>
-    </chapter>
-
-    <chapter id="sta-info">
-      <title>Station info handling</title>
-      <sect1>
-        <title>Programming information</title>
-!Fnet/mac80211/sta_info.h sta_info
-!Fnet/mac80211/sta_info.h ieee80211_sta_info_flags
-      </sect1>
-      <sect1>
-        <title>STA information lifetime rules</title>
-!Pnet/mac80211/sta_info.c STA information lifetime rules
-      </sect1>
-    </chapter>
-
-    <chapter id="synchronisation">
-      <title>Synchronisation</title>
-      <para>TBD</para>
-      <para>Locking, lots of RCU</para>
-    </chapter>
-  </part>
-</book>

Documentation/RCU/checklist.txt

@@ -218,13 +218,22 @@ over a rather long period of time, but improvements are always welcome!
 	include:
 
 	a.	Keeping a count of the number of data-structure elements
-		used by the RCU-protected data structure, including those
-		waiting for a grace period to elapse.  Enforce a limit
-		on this number, stalling updates as needed to allow
-		previously deferred frees to complete.
-
-		Alternatively, limit only the number awaiting deferred
-		free rather than the total number of elements.
+		used by the RCU-protected data structure, including
+		those waiting for a grace period to elapse.  Enforce a
+		limit on this number, stalling updates as needed to allow
+		previously deferred frees to complete.	Alternatively,
+		limit only the number awaiting deferred free rather than
+		the total number of elements.
+
+		One way to stall the updates is to acquire the update-side
+		mutex.	(Don't try this with a spinlock -- other CPUs
+		spinning on the lock could prevent the grace period
+		from ever ending.)  Another way to stall the updates
+		is for the updates to use a wrapper function around
+		the memory allocator, so that this wrapper function
+		simulates OOM when there is too much memory awaiting an
+		RCU grace period.  There are of course many other
+		variations on this theme.
 
 	b.	Limiting update rate.  For example, if updates occur only
 		once per hour, then no explicit rate limiting is required,
@@ -365,3 +374,26 @@ over a rather long period of time, but improvements are always welcome!
 	and the compiler to freely reorder code into and out of RCU
 	read-side critical sections.  It is the responsibility of the
 	RCU update-side primitives to deal with this.
+
+17.	Use CONFIG_PROVE_RCU, CONFIG_DEBUG_OBJECTS_RCU_HEAD, and
+	the __rcu sparse checks to validate your RCU code.  These
+	can help find problems as follows:
+
+	CONFIG_PROVE_RCU: check that accesses to RCU-protected data
+		structures are carried out under the proper RCU
+		read-side critical section, while holding the right
+		combination of locks, or whatever other conditions
+		are appropriate.
+
+	CONFIG_DEBUG_OBJECTS_RCU_HEAD: check that you don't pass the
+		same object to call_rcu() (or friends) before an RCU
+		grace period has elapsed since the last time that you
+		passed that same object to call_rcu() (or friends).
+
+	__rcu sparse checks: tag the pointer to the RCU-protected data
+		structure with __rcu, and sparse will warn you if you
+		access that pointer without the services of one of the
+		variants of rcu_dereference().
+
+	These debugging aids can help you find problems that are
+	otherwise extremely difficult to spot.

Documentation/RCU/stallwarn.txt

@@ -80,6 +80,24 @@ o	A CPU looping with bottom halves disabled.  This condition can
 o	For !CONFIG_PREEMPT kernels, a CPU looping anywhere in the kernel
 	without invoking schedule().
 
+o	A CPU-bound real-time task in a CONFIG_PREEMPT kernel, which might
+	happen to preempt a low-priority task in the middle of an RCU
+	read-side critical section.   This is especially damaging if
+	that low-priority task is not permitted to run on any other CPU,
+	in which case the next RCU grace period can never complete, which
+	will eventually cause the system to run out of memory and hang.
+	While the system is in the process of running itself out of
+	memory, you might see stall-warning messages.
+
+o	A CPU-bound real-time task in a CONFIG_PREEMPT_RT kernel that
+	is running at a higher priority than the RCU softirq threads.
+	This will prevent RCU callbacks from ever being invoked,
+	and in a CONFIG_TREE_PREEMPT_RCU kernel will further prevent
+	RCU grace periods from ever completing.  Either way, the
+	system will eventually run out of memory and hang.  In the
+	CONFIG_TREE_PREEMPT_RCU case, you might see stall-warning
+	messages.
+
 o	A bug in the RCU implementation.
 
 o	A hardware failure.  This is quite unlikely, but has occurred

Documentation/RCU/trace.txt

@@ -125,6 +125,17 @@ o	"b" is the batch limit for this CPU.  If more than this number
 	of RCU callbacks is ready to invoke, then the remainder will
 	be deferred.
 
+o	"ci" is the number of RCU callbacks that have been invoked for
+	this CPU.  Note that ci+ql is the number of callbacks that have
+	been registered in absence of CPU-hotplug activity.
+
+o	"co" is the number of RCU callbacks that have been orphaned due to
+	this CPU going offline.
+
+o	"ca" is the number of RCU callbacks that have been adopted due to
+	other CPUs going offline.  Note that ci+co-ca+ql is the number of
+	RCU callbacks registered on this CPU.
+
 There is also an rcu/rcudata.csv file with the same information in
 comma-separated-variable spreadsheet format.
 
@@ -180,7 +191,7 @@ o	"s" is the "signaled" state that drives force_quiescent_state()'s
 
 o	"jfq" is the number of jiffies remaining for this grace period
 	before force_quiescent_state() is invoked to help push things
-	along.  Note that CPUs in dyntick-idle mode thoughout the grace
+	along.  Note that CPUs in dyntick-idle mode throughout the grace
 	period will not report on their own, but rather must be check by
 	some other CPU via force_quiescent_state().
 

Documentation/arm/00-INDEX

@@ -6,6 +6,8 @@ Interrupts
 	- ARM Interrupt subsystem documentation
 IXP2000
 	- Release Notes for Linux on Intel's IXP2000 Network Processor
+msm
+	- MSM specific documentation
 Netwinder
 	- Netwinder specific documentation
 Porting

Documentation/arm/SA1100/FreeBird

-Freebird-1.1 is produced by Legned(C) ,Inc.
+Freebird-1.1 is produced by Legend(C), Inc.
 http://web.archive.org/web/*/http://www.legend.com.cn
-and software/linux mainatined by Coventive(C),Inc.
+and software/linux maintained by Coventive(C), Inc.
 (http://www.coventive.com)
 
 Based on the Nicolas's strongarm kernel tree.

Documentation/arm/msm/gpiomux.txt

+This document provides an overview of the msm_gpiomux interface, which
+is used to provide gpio pin multiplexing and configuration on mach-msm
+targets.
+
+History
+=======
+
+The first-generation API for gpio configuration & multiplexing on msm
+is the function gpio_tlmm_config().  This function has a few notable
+shortcomings, which led to its deprecation and replacement by gpiomux:
+
+The 'disable' parameter:  Setting the second parameter to
+gpio_tlmm_config to GPIO_CFG_DISABLE tells the peripheral
+processor in charge of the subsystem to perform a look-up into a
+low-power table and apply the low-power/sleep setting for the pin.
+As the msm family evolved this became problematic. Not all pins
+have sleep settings, not all peripheral processors will accept requests
+to apply said sleep settings, and not all msm targets have their gpio
+subsystems managed by a peripheral processor. In order to get consistent
+behavior on all targets, drivers are forced to ignore this parameter,
+rendering it useless.
+
+The 'direction' flag: for all mux-settings other than raw-gpio (0),
+the output-enable bit of a gpio is hard-wired to a known
+input (usually VDD or ground).  For those settings, the direction flag
+is meaningless at best, and deceptive at worst.  In addition, using the
+direction flag to change output-enable (OE) directly can cause trouble in
+gpiolib, which has no visibility into gpio direction changes made
+in this way.  Direction control in gpio mode should be made through gpiolib.
+
+Key Features of gpiomux
+=======================
+
+- A consistent interface across all generations of msm.  Drivers can expect
+the same results on every target.
+- gpiomux plays nicely with gpiolib.  Functions that should belong to gpiolib
+are left to gpiolib and not duplicated here.  gpiomux is written with the
+intent that gpio_chips will call gpiomux reference-counting methods
+from their request() and free() hooks, providing full integration.
+- Tabular configuration.  Instead of having to call gpio_tlmm_config
+hundreds of times, gpio configuration is placed in a single table.
+- Per-gpio sleep.  Each gpio is individually reference counted, allowing only
+those lines which are in use to be put in high-power states.
+- 0 means 'do nothing': all flags are designed so that the default memset-zero
+equates to a sensible default of 'no configuration', preventing users
+from having to provide hundreds of 'no-op' configs for unused or
+unwanted lines.
+
+Usage
+=====
+
+To use gpiomux, provide configuration information for relevant gpio lines
+in the msm_gpiomux_configs table.  Since a 0 equates to "unconfigured",
+only those lines to be managed by gpiomux need to be specified.  Here
+is a completely fictional example:
+
+struct msm_gpiomux_config msm_gpiomux_configs[GPIOMUX_NGPIOS] = {
+	[12] = {
+		.active = GPIOMUX_VALID | GPIOMUX_DRV_8MA | GPIOMUX_FUNC_1,
+		.suspended = GPIOMUX_VALID | GPIOMUX_PULL_DOWN,
+	},
+	[34] = {
+		.suspended = GPIOMUX_VALID | GPIOMUX_PULL_DOWN,
+	},
+};
+
+To indicate that a gpio is in use, call msm_gpiomux_get() to increase
+its reference count.  To decrease the reference count, call msm_gpiomux_put().
+
+The effect of this configuration is as follows:
+
+When the system boots, gpios 12 and 34 will be initialized with their
+'suspended' configurations.  All other gpios, which were left unconfigured,
+will not be touched.
+
+When msm_gpiomux_get() is called on gpio 12 to raise its reference count
+above 0, its active configuration will be applied.  Since no other gpio
+line has a valid active configuration, msm_gpiomux_get() will have no
+effect on any other line.
+
+When msm_gpiomux_put() is called on gpio 12 or 34 to drop their reference
+count to 0, their suspended configurations will be applied.
+Since no other gpio line has a valid suspended configuration, no other
+gpio line will be effected by msm_gpiomux_put().  Since gpio 34 has no valid
+active configuration, this is effectively a no-op for gpio 34 as well,
+with one small caveat, see the section "About Output-Enable Settings".
+
+All of the GPIOMUX_VALID flags may seem like unnecessary overhead, but
+they address some important issues.  As unused entries (all those
+except 12 and 34) are zero-filled, gpiomux needs a way to distinguish
+the used fields from the unused.  In addition, the all-zero pattern
+is a valid configuration!  Therefore, gpiomux defines an additional bit
+which is used to indicate when a field is used.  This has the pleasant
+side-effect of allowing calls to msm_gpiomux_write to use '0' to indicate
+that a value should not be changed:
+
+  msm_gpiomux_write(0, GPIOMUX_VALID, 0);
+
+replaces the active configuration of gpio 0 with an all-zero configuration,
+but leaves the suspended configuration as it was.
+
+Static Configurations
+=====================
+
+To install a static configuration, which is applied at boot and does
+not change after that, install a configuration with a suspended component
+but no active component, as in the previous example:
+
+	[34] = {
+		.suspended = GPIOMUX_VALID | GPIOMUX_PULL_DOWN,
+	},
+
+The suspended setting is applied during boot, and the lack of any valid
+active setting prevents any other setting from being applied at runtime.
+If other subsystems attempting to access the line is a concern, one could
+*really* anchor the configuration down by calling msm_gpiomux_get on the
+line at initialization to move the line into active mode.  With the line
+held, it will never be re-suspended, and with no valid active configuration,
+no new configurations will be applied.
+
+But then, if having other subsystems grabbing for the line is truly a concern,
+it should be reserved with gpio_request instead, which carries an implicit
+msm_gpiomux_get.
+
+gpiomux and gpiolib
+===================
+
+It is expected that msm gpio_chips will call msm_gpiomux_get() and
+msm_gpiomux_put() from their request and free hooks, like this fictional
+example:
+
+static int request(struct gpio_chip *chip, unsigned offset)
+{
+        return msm_gpiomux_get(chip->base + offset);
+}
+
+static void free(struct gpio_chip *chip, unsigned offset)
+{
+        msm_gpiomux_put(chip->base + offset);
+}
+
+	...somewhere in a gpio_chip declaration...
+	.request = request,
+	.free    = free,
+
+This provides important functionality:
+- It guarantees that a gpio line will have its 'active' config applied
+  when the line is requested, and will not be suspended while the line
+  remains requested; and
+- It guarantees that gpio-direction settings from gpiolib behave sensibly.
+  See "About Output-Enable Settings."
+
+This mechanism allows for "auto-request" of gpiomux lines via gpiolib
+when it is suitable.  Drivers wishing more exact control are, of course,
+free to also use msm_gpiomux_set and msm_gpiomux_get.
+
+About Output-Enable Settings
+============================
+
+Some msm targets do not have the ability to query the current gpio
+configuration setting.  This means that changes made to the output-enable
+(OE) bit by gpiolib cannot be consistently detected and preserved by gpiomux.
+Therefore, when gpiomux applies a configuration setting, any direction
+settings which may have been applied by gpiolib are lost and the default
+input settings are re-applied.
+
+For this reason, drivers should not assume that gpio direction settings
+continue to hold if they free and then re-request a gpio.  This seems like
+common sense - after all, anybody could have obtained the line in the
+meantime - but it needs saying.
+
+This also means that calls to msm_gpiomux_write will reset the OE bit,
+which means that if the gpio line is held by a client of gpiolib and
+msm_gpiomux_write is called, the direction setting has been lost and
+gpiolib's internal state has been broken.
+Release gpio lines before reconfiguring them.

Documentation/block/00-INDEX

 00-INDEX
 	- This file
-barrier.txt
-	- I/O Barriers
 biodoc.txt
 	- Notes on the Generic Block Layer Rewrite in Linux 2.5
 capability.txt
@@ -16,3 +14,5 @@ stat.txt
 	- Block layer statistics in /sys/block/<dev>/stat
 switching-sched.txt
 	- Switching I/O schedulers at runtime
+writeback_cache_control.txt
+	- Control of volatile write back caches

Documentation/block/barrier.txt

-I/O Barriers
-============
-Tejun Heo <htejun@gmail.com>, July 22 2005
-
-I/O barrier requests are used to guarantee ordering around the barrier
-requests.  Unless you're crazy enough to use disk drives for
-implementing synchronization constructs (wow, sounds interesting...),
-the ordering is meaningful only for write requests for things like
-journal checkpoints.  All requests queued before a barrier request
-must be finished (made it to the physical medium) before the barrier
-request is started, and all requests queued after the barrier request
-must be started only after the barrier request is finished (again,
-made it to the physical medium).
-
-In other words, I/O barrier requests have the following two properties.
-
-1. Request ordering
-
-Requests cannot pass the barrier request.  Preceding requests are
-processed before the barrier and following requests after.
-
-Depending on what features a drive supports, this can be done in one
-of the following three ways.
-
-i. For devices which have queue depth greater than 1 (TCQ devices) and
-support ordered tags, block layer can just issue the barrier as an
-ordered request and the lower level driver, controller and drive
-itself are responsible for making sure that the ordering constraint is
-met.  Most modern SCSI controllers/drives should support this.
-
-NOTE: SCSI ordered tag isn't currently used due to limitation in the
-      SCSI midlayer, see the following random notes section.
-
-ii. For devices which have queue depth greater than 1 but don't
-support ordered tags, block layer ensures that the requests preceding
-a barrier request finishes before issuing the barrier request.  Also,
-it defers requests following the barrier until the barrier request is
-finished.  Older SCSI controllers/drives and SATA drives fall in this
-category.
-
-iii. Devices which have queue depth of 1.  This is a degenerate case
-of ii.  Just keeping issue order suffices.  Ancient SCSI
-controllers/drives and IDE drives are in this category.
-
-2. Forced flushing to physical medium
-
-Again, if you're not gonna do synchronization with disk drives (dang,
-it sounds even more appealing now!), the reason you use I/O barriers
-is mainly to protect filesystem integrity when power failure or some
-other events abruptly stop the drive from operating and possibly make
-the drive lose data in its cache.  So, I/O barriers need to guarantee
-that requests actually get written to non-volatile medium in order.
-
-There are four cases,
-
-i. No write-back cache.  Keeping requests ordered is enough.
-
-ii. Write-back cache but no flush operation.  There's no way to
-guarantee physical-medium commit order.  This kind of devices can't to
-I/O barriers.
-
-iii. Write-back cache and flush operation but no FUA (forced unit
-access).  We need two cache flushes - before and after the barrier
-request.
-
-iv. Write-back cache, flush operation and FUA.  We still need one
-flush to make sure requests preceding a barrier are written to medium,
-but post-barrier flush can be avoided by using FUA write on the
-barrier itself.
-
-
-How to support barrier requests in drivers
-------------------------------------------
-
-All barrier handling is done inside block layer proper.  All low level
-drivers have to are implementing its prepare_flush_fn and using one
-the following two functions to indicate what barrier type it supports
-and how to prepare flush requests.  Note that the term 'ordered' is
-used to indicate the whole sequence of performing barrier requests
-including draining and flushing.
-
-typedef void (prepare_flush_fn)(struct request_queue *q, struct request *rq);
-
-int blk_queue_ordered(struct request_queue *q, unsigned ordered,
-		      prepare_flush_fn *prepare_flush_fn);
-
-@q			: the queue in question
-@ordered		: the ordered mode the driver/device supports
-@prepare_flush_fn	: this function should prepare @rq such that it
-			  flushes cache to physical medium when executed
-
-For example, SCSI disk driver's prepare_flush_fn looks like the
-following.
-
-static void sd_prepare_flush(struct request_queue *q, struct request *rq)
-{
-	memset(rq->cmd, 0, sizeof(rq->cmd));
-	rq->cmd_type = REQ_TYPE_BLOCK_PC;
-	rq->timeout = SD_TIMEOUT;
-	rq->cmd[0] = SYNCHRONIZE_CACHE;
-	rq->cmd_len = 10;
-}
-
-The following seven ordered modes are supported.  The following table
-shows which mode should be used depending on what features a
-device/driver supports.  In the leftmost column of table,
-QUEUE_ORDERED_ prefix is omitted from the mode names to save space.
-
-The table is followed by description of each mode.  Note that in the
-descriptions of QUEUE_ORDERED_DRAIN*, '=>' is used whereas '->' is
-used for QUEUE_ORDERED_TAG* descriptions.  '=>' indicates that the
-preceding step must be complete before proceeding to the next step.
-'->' indicates that the next step can start as soon as the previous
-step is issued.
-
-	    write-back cache	ordered tag	flush		FUA
------------------------------------------------------------------------
-NONE		yes/no		N/A		no		N/A
-DRAIN		no		no		N/A		N/A
-DRAIN_FLUSH	yes		no		yes		no
-DRAIN_FUA	yes		no		yes		yes
-TAG		no		yes		N/A		N/A
-TAG_FLUSH	yes		yes		yes		no
-TAG_FUA		yes		yes		yes		yes
-
-
-QUEUE_ORDERED_NONE
-	I/O barriers are not needed and/or supported.
-
-	Sequence: N/A
-
-QUEUE_ORDERED_DRAIN
-	Requests are ordered by draining the request queue and cache
-	flushing isn't needed.
-
-	Sequence: drain => barrier
-
-QUEUE_ORDERED_DRAIN_FLUSH
-	Requests are ordered by draining the request queue and both
-	pre-barrier and post-barrier cache flushings are needed.
-
-	Sequence: drain => preflush => barrier => postflush
-
-QUEUE_ORDERED_DRAIN_FUA
-	Requests are ordered by draining the request queue and
-	pre-barrier cache flushing is needed.  By using FUA on barrier
-	request, post-barrier flushing can be skipped.
-
-	Sequence: drain => preflush => barrier
-
-QUEUE_ORDERED_TAG
-	Requests are ordered by ordered tag and cache flushing isn't
-	needed.
-
-	Sequence: barrier
-
-QUEUE_ORDERED_TAG_FLUSH
-	Requests are ordered by ordered tag and both pre-barrier and
-	post-barrier cache flushings are needed.
-
-	Sequence: preflush -> barrier -> postflush
-
-QUEUE_ORDERED_TAG_FUA
-	Requests are ordered by ordered tag and pre-barrier cache
-	flushing is needed.  By using FUA on barrier request,
-	post-barrier flushing can be skipped.
-
-	Sequence: preflush -> barrier
-
-
-Random notes/caveats
---------------------
-
-* SCSI layer currently can't use TAG ordering even if the drive,
-controller and driver support it.  The problem is that SCSI midlayer
-request dispatch function is not atomic.  It releases queue lock and
-switch to SCSI host lock during issue and it's possible and likely to
-happen in time that requests change their relative positions.  Once
-this problem is solved, TAG ordering can be enabled.
-
-* Currently, no matter which ordered mode is used, there can be only
-one barrier request in progress.  All I/O barriers are held off by
-block layer until the previous I/O barrier is complete.  This doesn't
-make any difference for DRAIN ordered devices, but, for TAG ordered
-devices with very high command latency, passing multiple I/O barriers
-to low level *might* be helpful if they are very frequent.  Well, this
-certainly is a non-issue.  I'm writing this just to make clear that no
-two I/O barrier is ever passed to low-level driver.
-
-* Completion order.  Requests in ordered sequence are issued in order
-but not required to finish in order.  Barrier implementation can
-handle out-of-order completion of ordered sequence.  IOW, the requests
-MUST be processed in order but the hardware/software completion paths
-are allowed to reorder completion notifications - eg. current SCSI
-midlayer doesn't preserve completion order during error handling.
-
-* Requeueing order.  Low-level drivers are free to requeue any request
-after they removed it from the request queue with
-blkdev_dequeue_request().  As barrier sequence should be kept in order
-when requeued, generic elevator code takes care of putting requests in
-order around barrier.  See blk_ordered_req_seq() and
-ELEVATOR_INSERT_REQUEUE handling in __elv_add_request() for details.
-
-Note that block drivers must not requeue preceding requests while
-completing latter requests in an ordered sequence.  Currently, no
-error checking is done against this.
-
-* Error handling.  Currently, block layer will report error to upper
-layer if any of requests in an ordered sequence fails.  Unfortunately,
-this doesn't seem to be enough.  Look at the following request flow.
-QUEUE_ORDERED_TAG_FLUSH is in use.
-
- [0] [1] [2] [3] [pre] [barrier] [post] < [4] [5] [6] ... >
-					  still in elevator
-
-Let's say request [2], [3] are write requests to update file system
-metadata (journal or whatever) and [barrier] is used to mark that
-those updates are valid.  Consider the following sequence.
-
- i.	Requests [0] ~ [post] leaves the request queue and enters
-	low-level driver.
- ii.	After a while, unfortunately, something goes wrong and the
-	drive fails [2].  Note that any of [0], [1] and [3] could have
-	completed by this time, but [pre] couldn't have been finished
-	as the drive must process it in order and it failed before
-	processing that command.
- iii.	Error handling kicks in and determines that the error is
-	unrecoverable and fails [2], and resumes operation.
- iv.	[pre] [barrier] [post] gets processed.
- v.	*BOOM* power fails
-
-The problem here is that the barrier request is *supposed* to indicate
-that filesystem update requests [2] and [3] made it safely to the
-physical medium and, if the machine crashes after the barrier is
-written, filesystem recovery code can depend on that.  Sadly, that
-isn't true in this case anymore.  IOW, the success of a I/O barrier
-should also be dependent on success of some of the preceding requests,
-where only upper layer (filesystem) knows what 'some' is.
-
-This can be solved by implementing a way to tell the block layer which
-requests affect the success of the following barrier request and
-making lower lever drivers to resume operation on error only after
-block layer tells it to do so.
-
-As the probability of this happening is very low and the drive should
-be faulty, implementing the fix is probably an overkill.  But, still,
-it's there.
-
-* In previous drafts of barrier implementation, there was fallback
-mechanism such that, if FUA or ordered TAG fails, less fancy ordered
-mode can be selected and the failed barrier request is retried
-automatically.  The rationale for this feature was that as FUA is
-pretty new in ATA world and ordered tag was never used widely, there
-could be devices which report to support those features but choke when
-actually given such requests.
-
- This was removed for two reasons 1. it's an overkill 2. it's
-impossible to implement properly when TAG ordering is used as low
-level drivers resume after an error automatically.  If it's ever
-needed adding it back and modifying low level drivers accordingly
-shouldn't be difficult.

Documentation/block/writeback_cache_control.txt

+
+Explicit volatile write back cache control
+=====================================
+
+Introduction
+------------
+
+Many storage devices, especially in the consumer market, come with volatile
+write back caches.  That means the devices signal I/O completion to the
+operating system before data actually has hit the non-volatile storage.  This
+behavior obviously speeds up various workloads, but it means the operating
+system needs to force data out to the non-volatile storage when it performs
+a data integrity operation like fsync, sync or an unmount.
+
+The Linux block layer provides two simple mechanisms that let filesystems
+control the caching behavior of the storage device.  These mechanisms are
+a forced cache flush, and the Force Unit Access (FUA) flag for requests.
+
+
+Explicit cache flushes
+----------------------
+
+The REQ_FLUSH flag can be OR ed into the r/w flags of a bio submitted from
+the filesystem and will make sure the volatile cache of the storage device
+has been flushed before the actual I/O operation is started.  This explicitly
+guarantees that previously completed write requests are on non-volatile
+storage before the flagged bio starts. In addition the REQ_FLUSH flag can be
+set on an otherwise empty bio structure, which causes only an explicit cache
+flush without any dependent I/O.  It is recommend to use
+the blkdev_issue_flush() helper for a pure cache flush.
+
+
+Forced Unit Access
+-----------------
+
+The REQ_FUA flag can be OR ed into the r/w flags of a bio submitted from the
+filesystem and will make sure that I/O completion for this request is only
+signaled after the data has been committed to non-volatile storage.
+
+
+Implementation details for filesystems
+--------------------------------------
+
+Filesystems can simply set the REQ_FLUSH and REQ_FUA bits and do not have to
+worry if the underlying devices need any explicit cache flushing and how
+the Forced Unit Access is implemented.  The REQ_FLUSH and REQ_FUA flags
+may both be set on a single bio.
+
+
+Implementation details for make_request_fn based block drivers
+--------------------------------------------------------------
+
+These drivers will always see the REQ_FLUSH and REQ_FUA bits as they sit
+directly below the submit_bio interface.  For remapping drivers the REQ_FUA
+bits need to be propagated to underlying devices, and a global flush needs
+to be implemented for bios with the REQ_FLUSH bit set.  For real device
+drivers that do not have a volatile cache the REQ_FLUSH and REQ_FUA bits
+on non-empty bios can simply be ignored, and REQ_FLUSH requests without
+data can be completed successfully without doing any work.  Drivers for
+devices with volatile caches need to implement the support for these
+flags themselves without any help from the block layer.
+
+
+Implementation details for request_fn based block drivers
+--------------------------------------------------------------
+
+For devices that do not support volatile write caches there is no driver
+support required, the block layer completes empty REQ_FLUSH requests before
+entering the driver and strips off the REQ_FLUSH and REQ_FUA bits from
+requests that have a payload.  For devices with volatile write caches the
+driver needs to tell the block layer that it supports flushing caches by
+doing:
+
+	blk_queue_flush(sdkp->disk->queue, REQ_FLUSH);
+
+and handle empty REQ_FLUSH requests in its prep_fn/request_fn.  Note that
+REQ_FLUSH requests with a payload are automatically turned into a sequence
+of an empty REQ_FLUSH request followed by the actual write by the block
+layer.  For devices that also support the FUA bit the block layer needs
+to be told to pass through the REQ_FUA bit using:
+
+	blk_queue_flush(sdkp->disk->queue, REQ_FLUSH | REQ_FUA);
+
+and the driver must handle write requests that have the REQ_FUA bit set
+in prep_fn/request_fn.  If the FUA bit is not natively supported the block
+layer turns it into an empty REQ_FLUSH request after the actual write.

Documentation/cgroups/blkio-controller.txt

@@ -8,12 +8,17 @@ both at leaf nodes as well as at intermediate nodes in a storage hierarchy.
 Plan is to use the same cgroup based management interface for blkio controller
 and based on user options switch IO policies in the background.
 
-In the first phase, this patchset implements proportional weight time based
-division of disk policy. It is implemented in CFQ. Hence this policy takes
-effect only on leaf nodes when CFQ is being used.
+Currently two IO control policies are implemented. First one is proportional
+weight time based division of disk policy. It is implemented in CFQ. Hence
+this policy takes effect only on leaf nodes when CFQ is being used. The second
+one is throttling policy which can be used to specify upper IO rate limits
+on devices. This policy is implemented in generic block layer and can be
+used on leaf nodes as well as higher level logical devices like device mapper.
 
 HOWTO
 =====
+Proportional Weight division of bandwidth
+-----------------------------------------
 You can do a very simple testing of running two dd threads in two different
 cgroups. Here is what you can do.
 
@@ -55,6 +60,35 @@ cgroups. Here is what you can do.
   group dispatched to the disk. We provide fairness in terms of disk time, so
   ideally io.disk_time of cgroups should be in proportion to the weight.
 
+Throttling/Upper Limit policy
+-----------------------------
+- Enable Block IO controller
+	CONFIG_BLK_CGROUP=y
+
+- Enable throttling in block layer
+	CONFIG_BLK_DEV_THROTTLING=y
+
+- Mount blkio controller
+        mount -t cgroup -o blkio none /cgroup/blkio
+
+- Specify a bandwidth rate on particular device for root group. The format
+  for policy is "<major>:<minor>  <byes_per_second>".
+
+        echo "8:16  1048576" > /cgroup/blkio/blkio.read_bps_device
+
+  Above will put a limit of 1MB/second on reads happening for root group
+  on device having major/minor number 8:16.
+
+- Run dd to read a file and see if rate is throttled to 1MB/s or not.
+
+		# dd if=/mnt/common/zerofile of=/dev/null bs=4K count=1024
+		# iflag=direct
+        1024+0 records in
+        1024+0 records out
+        4194304 bytes (4.2 MB) copied, 4.0001 s, 1.0 MB/s
+
+ Limits for writes can be put using blkio.write_bps_device file.
+
 Various user visible config options
 ===================================
 CONFIG_BLK_CGROUP
@@ -68,8 +102,13 @@ CONFIG_CFQ_GROUP_IOSCHED
 	- Enables group scheduling in CFQ. Currently only 1 level of group
 	  creation is allowed.
 
+CONFIG_BLK_DEV_THROTTLING
+	- Enable block device throttling support in block layer.
+
 Details of cgroup files
 =======================
+Proportional weight policy files
+--------------------------------
 - blkio.weight
 	- Specifies per cgroup weight. This is default weight of the group
 	  on all the devices until and unless overridden by per device rule.
@@ -210,6 +249,67 @@ Details of cgroup files
 	  and minor number of the device and third field specifies the number
 	  of times a group was dequeued from a particular device.
 
+Throttling/Upper limit policy files
+-----------------------------------
+- blkio.throttle.read_bps_device
+	- Specifies upper limit on READ rate from the device. IO rate is
+	  specified in bytes per second. Rules are per deivce. Following is
+	  the format.
+
+  echo "<major>:<minor>  <rate_bytes_per_second>" > /cgrp/blkio.read_bps_device
+
+- blkio.throttle.write_bps_device
+	- Specifies upper limit on WRITE rate to the device. IO rate is
+	  specified in bytes per second. Rules are per deivce. Following is
+	  the format.
+
+  echo "<major>:<minor>  <rate_bytes_per_second>" > /cgrp/blkio.write_bps_device
+
+- blkio.throttle.read_iops_device
+	- Specifies upper limit on READ rate from the device. IO rate is
+	  specified in IO per second. Rules are per deivce. Following is
+	  the format.
+
+  echo "<major>:<minor>  <rate_io_per_second>" > /cgrp/blkio.read_iops_device
+
+- blkio.throttle.write_iops_device
+	- Specifies upper limit on WRITE rate to the device. IO rate is
+	  specified in io per second. Rules are per deivce. Following is
+	  the format.
+
+  echo "<major>:<minor>  <rate_io_per_second>" > /cgrp/blkio.write_iops_device
+
+Note: If both BW and IOPS rules are specified for a device, then IO is
+      subjectd to both the constraints.
+
+- blkio.throttle.io_serviced
+	- Number of IOs (bio) completed to/from the disk by the group (as
+	  seen by throttling policy). These are further divided by the type
+	  of operation - read or write, sync or async. First two fields specify
+	  the major and minor number of the device, third field specifies the
+	  operation type and the fourth field specifies the number of IOs.
+
+	  blkio.io_serviced does accounting as seen by CFQ and counts are in
+	  number of requests (struct request). On the other hand,
+	  blkio.throttle.io_serviced counts number of IO in terms of number
+	  of bios as seen by throttling policy.  These bios can later be
+	  merged by elevator and total number of requests completed can be
+	  lesser.
+
+- blkio.throttle.io_service_bytes
+	- Number of bytes transferred to/from the disk by the group. These
+	  are further divided by the type of operation - read or write, sync
+	  or async. First two fields specify the major and minor number of the
+	  device, third field specifies the operation type and the fourth field
+	  specifies the number of bytes.
+
+	  These numbers should roughly be same as blkio.io_service_bytes as
+	  updated by CFQ. The difference between two is that
+	  blkio.io_service_bytes will not be updated if CFQ is not operating
+	  on request queue.
+
+Common files among various policies
+-----------------------------------
 - blkio.reset_stats
 	- Writing an int to this file will result in resetting all the stats
 	  for that cgroup.

Documentation/cputopology.txt

@@ -14,25 +14,39 @@ to /proc/cpuinfo.
 	identifier (rather than the kernel's).  The actual value is
 	architecture and platform dependent.
 
-3) /sys/devices/system/cpu/cpuX/topology/thread_siblings:
+3) /sys/devices/system/cpu/cpuX/topology/book_id:
+
+	the book ID of cpuX. Typically it is the hardware platform's
+	identifier (rather than the kernel's).	The actual value is
+	architecture and platform dependent.
+
+4) /sys/devices/system/cpu/cpuX/topology/thread_siblings:
 
 	internel kernel map of cpuX's hardware threads within the same
 	core as cpuX
 
-4) /sys/devices/system/cpu/cpuX/topology/core_siblings:
+5) /sys/devices/system/cpu/cpuX/topology/core_siblings:
 
 	internal kernel map of cpuX's hardware threads within the same
 	physical_package_id.
 
+6) /sys/devices/system/cpu/cpuX/topology/book_siblings:
+
+	internal kernel map of cpuX's hardware threads within the same
+	book_id.
+
 To implement it in an architecture-neutral way, a new source file,
-drivers/base/topology.c, is to export the 4 attributes.
+drivers/base/topology.c, is to export the 4 or 6 attributes. The two book
+related sysfs files will only be created if CONFIG_SCHED_BOOK is selected.
 
 For an architecture to support this feature, it must define some of
 these macros in include/asm-XXX/topology.h:
 #define topology_physical_package_id(cpu)
 #define topology_core_id(cpu)
+#define topology_book_id(cpu)
 #define topology_thread_cpumask(cpu)
 #define topology_core_cpumask(cpu)
+#define topology_book_cpumask(cpu)
 
 The type of **_id is int.
 The type of siblings is (const) struct cpumask *.
@@ -45,6 +59,9 @@ not defined by include/asm-XXX/topology.h:
 3) thread_siblings: just the given CPU
 4) core_siblings: just the given CPU
 
+For architectures that don't support books (CONFIG_SCHED_BOOK) there are no
+default definitions for topology_book_id() and topology_book_cpumask().
+
 Additionally, CPU topology information is provided under
 /sys/devices/system/cpu and includes these files.  The internal
 source for the output is in brackets ("[]").

Documentation/devices.txt

@@ -239,6 +239,7 @@ Your cooperation is appreciated.
 		  0 = /dev/tty		Current TTY device
 		  1 = /dev/console	System console
 		  2 = /dev/ptmx		PTY master multiplex
+		  3 = /dev/ttyprintk	User messages via printk TTY device
 		 64 = /dev/cua0		Callout device for ttyS0
 		    ...
 		255 = /dev/cua191	Callout device for ttyS191
@@ -2553,7 +2554,10 @@ Your cooperation is appreciated.
 		175 = /dev/usb/legousbtower15	16th USB Legotower device
 		176 = /dev/usb/usbtmc1	First USB TMC device
 		   ...
-		192 = /dev/usb/usbtmc16	16th USB TMC device
+		191 = /dev/usb/usbtmc16	16th USB TMC device
+		192 = /dev/usb/yurex1	First USB Yurex device
+		   ...
+		209 = /dev/usb/yurex16	16th USB Yurex device
 		240 = /dev/usb/dabusb0	First daubusb device
 		    ...
 		243 = /dev/usb/dabusb3	Fourth dabusb device

Documentation/dynamic-debug-howto.txt

@@ -24,7 +24,7 @@ Dynamic debug has even more useful features:
    read to display the complete list of known debug statements, to help guide you
 
 Controlling dynamic debug Behaviour
-===============================
+===================================
 
 The behaviour of pr_debug()/dev_debug()s are controlled via writing to a
 control file in the 'debugfs' filesystem. Thus, you must first mount the debugfs
@@ -212,6 +212,26 @@ Note the regexp ^[-+=][scp]+$ matches a flags specification.
 Note also that there is no convenient syntax to remove all
 the flags at once, you need to use "-psc".
 
+
+Debug messages during boot process
+==================================
+
+To be able to activate debug messages during the boot process,
+even before userspace and debugfs exists, use the boot parameter:
+ddebug_query="QUERY"
+
+QUERY follows the syntax described above, but must not exceed 1023
+characters. The enablement of debug messages is done as an arch_initcall.
+Thus you can enable debug messages in all code processed after this
+arch_initcall via this boot parameter.
+On an x86 system for example ACPI enablement is a subsys_initcall and
+ddebug_query="file ec.c +p"
+will show early Embedded Controller transactions during ACPI setup if
+your machine (typically a laptop) has an Embedded Controller.
+PCI (or other devices) initialization also is a hot candidate for using
+this boot parameter for debugging purposes.
+
+
 Examples
 ========
 

Documentation/feature-removal-schedule.txt

@@ -386,34 +386,6 @@ Who:	Tejun Heo <tj@kernel.org>
 
 ----------------------------
 
-What:	Support for VMware's guest paravirtuliazation technique [VMI] will be
-	dropped.
-When:	2.6.37 or earlier.
-Why:	With the recent innovations in CPU hardware acceleration technologies
-	from Intel and AMD, VMware ran a few experiments to compare these
-	techniques to guest paravirtualization technique on VMware's platform.
-	These hardware assisted virtualization techniques have outperformed the
-	performance benefits provided by VMI in most of the workloads. VMware
-	expects that these hardware features will be ubiquitous in a couple of
-	years, as a result, VMware has started a phased retirement of this
-	feature from the hypervisor. We will be removing this feature from the
-	Kernel too. Right now we are targeting 2.6.37 but can retire earlier if
-	technical reasons (read opportunity to remove major chunk of pvops)
-	arise.
-
-	Please note that VMI has always been an optimization and non-VMI kernels
-	still work fine on VMware's platform.
-	Latest versions of VMware's product which support VMI are,
-	Workstation 7.0 and VSphere 4.0 on ESX side, future maintainence
-	releases for these products will continue supporting VMI.
-
-	For more details about VMI retirement take a look at this,
-	http://blogs.vmware.com/guestosguide/2009/09/vmi-retirement.html
-
-Who:	Alok N Kataria <akataria@vmware.com>
-
-----------------------------
-
 What:	Support for lcd_switch and display_get in asus-laptop driver
 When:	March 2010
 Why:	These two features use non-standard interfaces. There are the
@@ -530,16 +502,6 @@ Who:	Thomas Gleixner <tglx@linutronix.de>
 
 ----------------------------
 
-What:	old ieee1394 subsystem (CONFIG_IEEE1394)
-When:	2.6.37
-Files:	drivers/ieee1394/ except init_ohci1394_dma.c
-Why:	superseded by drivers/firewire/ (CONFIG_FIREWIRE) which offers more
-	features, better performance, and better security, all with smaller
-	and more modern code base
-Who:	Stefan Richter <stefanr@s5r6.in-berlin.de>
-
-----------------------------
-
 What:	The acpi_sleep=s4_nonvs command line option
 When:	2.6.37
 Files:	arch/x86/kernel/acpi/sleep.c
@@ -564,3 +526,12 @@ Who:	FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
 
 ----------------------------
 
+What:	iwlwifi disable_hw_scan module parameters
+When:	2.6.40
+Why:	Hareware scan is the prefer method for iwlwifi devices for
+	scanning operation. Remove software scan support for all the
+	iwlwifi devices.
+
+Who:	Wey-Yi Guy <wey-yi.w.guy@intel.com>
+
+----------------------------

Documentation/filesystems/ocfs2.txt

@@ -87,3 +87,10 @@ dir_resv_level=	(*)	By default, directory reservations will scale with file
 			reservations - users should rarely need to change this
 			value. If allocation reservations are turned off, this
 			option will have no effect.
+coherency=full  (*)	Disallow concurrent O_DIRECT writes, cluster inode
+			lock will be taken to force other nodes drop cache,
+			therefore full cluster coherency is guaranteed even
+			for O_DIRECT writes.
+coherency=buffered	Allow concurrent O_DIRECT writes without EX lock among
+			nodes, which gains high performance at risk of getting
+			stale data on other nodes.

Documentation/input/ntrig.txt

+N-Trig touchscreen Driver
+-------------------------
+	Copyright (c) 2008-2010 Rafi Rubin <rafi@seas.upenn.edu>
+	Copyright (c) 2009-2010 Stephane Chatty
+
+This driver provides support for N-Trig pen and multi-touch sensors.  Single
+and multi-touch events are translated to the appropriate protocols for
+the hid and input systems.  Pen events are sufficiently hid compliant and
+are left to the hid core.  The driver also provides additional filtering
+and utility functions accessible with sysfs and module parameters.
+
+This driver has been reported to work properly with multiple N-Trig devices
+attached.
+
+
+Parameters
+----------
+
+Note: values set at load time are global and will apply to all applicable
+devices.  Adjusting parameters with sysfs will override the load time values,
+but only for that one device.
+
+The following parameters are used to configure filters to reduce noise:
+
+activate_slack		number of fingers to ignore before processing events
+
+activation_height	size threshold to activate immediately
+activation_width
+
+min_height		size threshold bellow which fingers are ignored
+min_width		both to decide activation and during activity
+
+deactivate_slack	the number of "no contact" frames to ignore before
+			propagating the end of activity events
+
+When the last finger is removed from the device, it sends a number of empty
+frames.  By holding off on deactivation for a few frames we can tolerate false
+erroneous disconnects, where the sensor may mistakenly not detect a finger that
+is still present.  Thus deactivate_slack addresses problems where a users might
+see breaks in lines during drawing, or drop an object during a long drag.
+
+
+Additional sysfs items
+----------------------
+
+These nodes just provide easy access to the ranges reported by the device.
+sensor_logical_height	the range for positions reported during activity
+sensor_logical_width
+
+sensor_physical_height	internal ranges not used for normal events but
+sensor_physical_width	useful for tuning
+
+All N-Trig devices with product id of 1 report events in the ranges of
+X: 0-9600
+Y: 0-7200
+However not all of these devices have the same physical dimensions.  Most
+seem to be 12" sensors (Dell Latitude XT and XT2 and the HP TX2), and
+at least one model (Dell Studio 17) has a 17" sensor.  The ratio of physical
+to logical sizes is used to adjust the size based filter parameters.
+
+
+Filtering
+---------
+
+With the release of the early multi-touch firmwares it became increasingly
+obvious that these sensors were prone to erroneous events.  Users reported
+seeing both inappropriately dropped contact and ghosts, contacts reported
+where no finger was actually touching the screen.
+
+Deactivation slack helps prevent dropped contact for single touch use, but does
+not address the problem of dropping one of more contacts while other contacts
+are still active.  Drops in the multi-touch context require additional
+processing and should be handled in tandem with tacking.
+
+As observed ghost contacts are similar to actual use of the sensor, but they
+seem to have different profiles.  Ghost activity typically shows up as small
+short lived touches.  As such, I assume that the longer the continuous stream
+of events the more likely those events are from a real contact, and that the
+larger the size of each contact the more likely it is real.  Balancing the
+goals of preventing ghosts and accepting real events quickly (to minimize
+user observable latency), the filter accumulates confidence for incoming
+events until it hits thresholds and begins propagating.  In the interest in
+minimizing stored state as well as the cost of operations to make a decision,
+I've kept that decision simple.
+
+Time is measured in terms of the number of fingers reported, not frames since
+the probability of multiple simultaneous ghosts is expected to drop off
+dramatically with increasing numbers.  Rather than accumulate weight as a
+function of size, I just use it as a binary threshold.  A sufficiently large
+contact immediately overrides the waiting period and leads to activation.
+
+Setting the activation size thresholds to large values will result in deciding
+primarily on activation slack.  If you see longer lived ghosts, turning up the
+activation slack while reducing the size thresholds may suffice to eliminate
+the ghosts while keeping the screen quite responsive to firm taps.
+
+Contacts continue to be filtered with min_height and min_width even after
+the initial activation filter is satisfied.  The intent is to provide
+a mechanism for filtering out ghosts in the form of an extra finger while
+you actually are using the screen.  In practice this sort of ghost has
+been far less problematic or relatively rare and I've left the defaults
+set to 0 for both parameters, effectively turning off that filter.
+
+I don't know what the optimal values are for these filters.  If the defaults
+don't work for you, please play with the parameters.  If you do find other
+values more comfortable, I would appreciate feedback.
+
+The calibration of these devices does drift over time.  If ghosts or contact
+dropping worsen and interfere with the normal usage of your device, try
+recalibrating it.
+
+
+Calibration
+-----------
+
+The N-Trig windows tools provide calibration and testing routines.  Also an
+unofficial unsupported set of user space tools including a calibrator is
+available at:
+http://code.launchpad.net/~rafi-seas/+junk/ntrig_calib
+
+
+Tracking
+--------
+
+As of yet, all tested N-Trig firmwares do not track fingers.  When multiple
+contacts are active they seem to be sorted primarily by Y position.

Documentation/kernel-parameters.txt

@@ -43,10 +43,11 @@ parameter is applicable:
 	AVR32	AVR32 architecture is enabled.
 	AX25	Appropriate AX.25 support is enabled.
 	BLACKFIN Blackfin architecture is enabled.
-	DRM	Direct Rendering Management support is enabled.
 	EDD	BIOS Enhanced Disk Drive Services (EDD) is enabled
 	EFI	EFI Partitioning (GPT) is enabled
 	EIDE	EIDE/ATAPI support is enabled.
+	DRM	Direct Rendering Management support is enabled.
+	DYNAMIC_DEBUG Build in debug messages and enable them at runtime
 	FB	The frame buffer device is enabled.
 	GCOV	GCOV profiling is enabled.
 	HW	Appropriate hardware is enabled.
@@ -455,7 +456,7 @@ and is between 256 and 4096 characters. It is defined in the file
 			[ARM] imx_timer1,OSTS,netx_timer,mpu_timer2,
 				pxa_timer,timer3,32k_counter,timer0_1
 			[AVR32] avr32
-			[X86-32] pit,hpet,tsc,vmi-timer;
+			[X86-32] pit,hpet,tsc;
 				scx200_hrt on Geode; cyclone on IBM x440
 			[MIPS] MIPS
 			[PARISC] cr16
@@ -570,6 +571,10 @@ and is between 256 and 4096 characters. It is defined in the file
 			Format: <port#>,<type>
 			See also Documentation/input/joystick-parport.txt
 
+	ddebug_query=   [KNL,DYNAMIC_DEBUG] Enable debug messages at early boot
+			time. See Documentation/dynamic-debug-howto.txt for
+			details.
+
 	debug		[KNL] Enable kernel debugging (events log level).
 
 	debug_locks_verbose=
@@ -1126,9 +1131,13 @@ and is between 256 and 4096 characters. It is defined in the file
 	kvm.oos_shadow=	[KVM] Disable out-of-sync shadow paging.
 			Default is 1 (enabled)
 
-	kvm-amd.nested=	[KVM,AMD] Allow nested virtualization in KVM/SVM.
+	kvm.mmu_audit=	[KVM] This is a R/W parameter which allows audit
+			KVM MMU at runtime.
 			Default is 0 (off)
 
+	kvm-amd.nested=	[KVM,AMD] Allow nested virtualization in KVM/SVM.
+			Default is 1 (enabled)
+
 	kvm-amd.npt=	[KVM,AMD] Disable nested paging (virtualized MMU)
 			for all guests.
 			Default is 1 (enabled) if in 64bit or 32bit-PAE mode
@@ -1693,6 +1702,8 @@ and is between 256 and 4096 characters. It is defined in the file
 
 	nojitter	[IA64] Disables jitter checking for ITC timers.
 
+	no-kvmclock	[X86,KVM] Disable paravirtualized KVM clock driver
+
 	nolapic		[X86-32,APIC] Do not enable or use the local APIC.
 
 	nolapic_timer	[X86-32,APIC] Do not use the local APIC timer.
@@ -1713,7 +1724,7 @@ and is between 256 and 4096 characters. It is defined in the file
 	norandmaps	Don't use address space randomization.  Equivalent to
 			echo 0 > /proc/sys/kernel/randomize_va_space
 
-	noreplace-paravirt	[X86-32,PV_OPS] Don't patch paravirt_ops
+	noreplace-paravirt	[X86,IA-64,PV_OPS] Don't patch paravirt_ops
 
 	noreplace-smp	[X86-32,SMP] Don't replace SMP instructions
 			with UP alternatives
@@ -2153,6 +2164,11 @@ and is between 256 and 4096 characters. It is defined in the file
 			Reserves a hole at the top of the kernel virtual
 			address space.
 
+	reservelow=	[X86]
+			Format: nn[K]
+			Set the amount of memory to reserve for BIOS at
+			the bottom of the address space.
+
 	reset_devices	[KNL] Force drivers to reset the underlying device
 			during initialization.
 
@@ -2165,6 +2181,11 @@ and is between 256 and 4096 characters. It is defined in the file
 			in <PAGE_SIZE> units (needed only for swap files).
 			See  Documentation/power/swsusp-and-swap-files.txt
 
+	hibernate=	[HIBERNATION]
+		noresume	Don't check if there's a hibernation image
+				present during boot.
+		nocompress	Don't compress/decompress hibernation images.
+
 	retain_initrd	[RAM] Keep initrd memory after extraction
 
 	rhash_entries=	[KNL,NET]
@@ -2360,6 +2381,15 @@ and is between 256 and 4096 characters. It is defined in the file
 
 	switches=	[HW,M68k]
 
+	sysfs.deprecated=0|1 [KNL]
+			Enable/disable old style sysfs layout for old udev
+			on older distributions. When this option is enabled
+			very new udev will not work anymore. When this option
+			is disabled (or CONFIG_SYSFS_DEPRECATED not compiled)
+			in older udev will not work anymore.
+			Default depends on CONFIG_SYSFS_DEPRECATED_V2 set in
+			the kernel configuration.
+
 	sysrq_always_enabled
 			[KNL]
 			Ignore sysrq setting - this boot parameter will
@@ -2435,6 +2465,10 @@ and is between 256 and 4096 characters. It is defined in the file
 			disables clocksource verification at runtime.
 			Used to enable high-resolution timer mode on older
 			hardware, and in virtualized environment.
+			[x86] noirqtime: Do not use TSC to do irq accounting.
+			Used to run time disable IRQ_TIME_ACCOUNTING on any
+			platforms where RDTSC is slow and this accounting
+			can add overhead.
 
 	turbografx.map[2|3]=	[HW,JOY]
 			TurboGraFX parallel port interface

Documentation/kprobes.txt

@@ -542,9 +542,11 @@ Kprobes does not use mutexes or allocate memory except during
 registration and unregistration.
 
 Probe handlers are run with preemption disabled.  Depending on the
-architecture, handlers may also run with interrupts disabled.  In any
-case, your handler should not yield the CPU (e.g., by attempting to
-acquire a semaphore).
+architecture and optimization state, handlers may also run with
+interrupts disabled (e.g., kretprobe handlers and optimized kprobe
+handlers run without interrupt disabled on x86/x86-64).  In any case,
+your handler should not yield the CPU (e.g., by attempting to acquire
+a semaphore).
 
 Since a return probe is implemented by replacing the return
 address with the trampoline's address, stack backtraces and calls

Documentation/kvm/api.txt

@@ -320,13 +320,13 @@ struct kvm_translation {
 4.15 KVM_INTERRUPT
 
 Capability: basic
-Architectures: x86
+Architectures: x86, ppc
 Type: vcpu ioctl
 Parameters: struct kvm_interrupt (in)
 Returns: 0 on success, -1 on error
 
 Queues a hardware interrupt vector to be injected.  This is only
-useful if in-kernel local APIC is not used.
+useful if in-kernel local APIC or equivalent is not used.
 
 /* for KVM_INTERRUPT */
 struct kvm_interrupt {
@@ -334,8 +334,37 @@ struct kvm_interrupt {
 	__u32 irq;
 };
 
+X86:
+
 Note 'irq' is an interrupt vector, not an interrupt pin or line.
 
+PPC:
+
+Queues an external interrupt to be injected. This ioctl is overleaded
+with 3 different irq values:
+
+a) KVM_INTERRUPT_SET
+
+  This injects an edge type external interrupt into the guest once it's ready
+  to receive interrupts. When injected, the interrupt is done.
+
+b) KVM_INTERRUPT_UNSET
+
+  This unsets any pending interrupt.
+
+  Only available with KVM_CAP_PPC_UNSET_IRQ.
+
+c) KVM_INTERRUPT_SET_LEVEL
+
+  This injects a level type external interrupt into the guest context. The
+  interrupt stays pending until a specific ioctl with KVM_INTERRUPT_UNSET
+  is triggered.
+
+  Only available with KVM_CAP_PPC_IRQ_LEVEL.
+
+Note that any value for 'irq' other than the ones stated above is invalid
+and incurs unexpected behavior.
+
 4.16 KVM_DEBUG_GUEST
 
 Capability: basic
@@ -1013,8 +1042,9 @@ number is just right, the 'nent' field is adjusted to the number of valid
 entries in the 'entries' array, which is then filled.
 
 The entries returned are the host cpuid as returned by the cpuid instruction,
-with unknown or unsupported features masked out.  The fields in each entry
-are defined as follows:
+with unknown or unsupported features masked out.  Some features (for example,
+x2apic), may not be present in the host cpu, but are exposed by kvm if it can
+emulate them efficiently. The fields in each entry are defined as follows:
 
   function: the eax value used to obtain the entry
   index: the ecx value used to obtain the entry (for entries that are
@@ -1032,6 +1062,29 @@ are defined as follows:
    eax, ebx, ecx, edx: the values returned by the cpuid instruction for
          this function/index combination
 
+4.46 KVM_PPC_GET_PVINFO
+
+Capability: KVM_CAP_PPC_GET_PVINFO
+Architectures: ppc
+Type: vm ioctl
+Parameters: struct kvm_ppc_pvinfo (out)
+Returns: 0 on success, !0 on error
+
+struct kvm_ppc_pvinfo {
+	__u32 flags;
+	__u32 hcall[4];
+	__u8  pad[108];
+};
+
+This ioctl fetches PV specific information that need to be passed to the guest
+using the device tree or other means from vm context.
+
+For now the only implemented piece of information distributed here is an array
+of 4 instructions that make up a hypercall.
+
+If any additional field gets added to this structure later on, a bit for that
+additional piece of information will be set in the flags bitmap.
+
 5. The kvm_run structure
 
 Application code obtains a pointer to the kvm_run structure by

Documentation/kvm/ppc-pv.txt

+The PPC KVM paravirtual interface
+=================================
+
+The basic execution principle by which KVM on PowerPC works is to run all kernel
+space code in PR=1 which is user space. This way we trap all privileged
+instructions and can emulate them accordingly.
+
+Unfortunately that is also the downfall. There are quite some privileged
+instructions that needlessly return us to the hypervisor even though they
+could be handled differently.
+
+This is what the PPC PV interface helps with. It takes privileged instructions
+and transforms them into unprivileged ones with some help from the hypervisor.
+This cuts down virtualization costs by about 50% on some of my benchmarks.
+
+The code for that interface can be found in arch/powerpc/kernel/kvm*
+
+Querying for existence
+======================
+
+To find out if we're running on KVM or not, we leverage the device tree. When
+Linux is running on KVM, a node /hypervisor exists. That node contains a
+compatible property with the value "linux,kvm".
+
+Once you determined you're running under a PV capable KVM, you can now use
+hypercalls as described below.
+
+KVM hypercalls
+==============
+
+Inside the device tree's /hypervisor node there's a property called
+'hypercall-instructions'. This property contains at most 4 opcodes that make
+up the hypercall. To call a hypercall, just call these instructions.
+
+The parameters are as follows:
+
+	Register	IN			OUT
+
+	r0		-			volatile
+	r3		1st parameter		Return code
+	r4		2nd parameter		1st output value
+	r5		3rd parameter		2nd output value
+	r6		4th parameter		3rd output value
+	r7		5th parameter		4th output value
+	r8		6th parameter		5th output value
+	r9		7th parameter		6th output value
+	r10		8th parameter		7th output value
+	r11		hypercall number	8th output value
+	r12		-			volatile
+
+Hypercall definitions are shared in generic code, so the same hypercall numbers
+apply for x86 and powerpc alike with the exception that each KVM hypercall
+also needs to be ORed with the KVM vendor code which is (42 << 16).
+
+Return codes can be as follows:
+
+	Code		Meaning
+
+	0		Success
+	12		Hypercall not implemented
+	<0		Error
+
+The magic page
+==============
+
+To enable communication between the hypervisor and guest there is a new shared
+page that contains parts of supervisor visible register state. The guest can
+map this shared page using the KVM hypercall KVM_HC_PPC_MAP_MAGIC_PAGE.
+
+With this hypercall issued the guest always gets the magic page mapped at the
+desired location in effective and physical address space. For now, we always
+map the page to -4096. This way we can access it using absolute load and store
+functions. The following instruction reads the first field of the magic page:
+
+	ld	rX, -4096(0)
+
+The interface is designed to be extensible should there be need later to add
+additional registers to the magic page. If you add fields to the magic page,
+also define a new hypercall feature to indicate that the host can give you more
+registers. Only if the host supports the additional features, make use of them.
+
+The magic page has the following layout as described in
+arch/powerpc/include/asm/kvm_para.h:
+
+struct kvm_vcpu_arch_shared {
+	__u64 scratch1;
+	__u64 scratch2;
+	__u64 scratch3;
+	__u64 critical;		/* Guest may not get interrupts if == r1 */
+	__u64 sprg0;
+	__u64 sprg1;
+	__u64 sprg2;
+	__u64 sprg3;
+	__u64 srr0;
+	__u64 srr1;
+	__u64 dar;
+	__u64 msr;
+	__u32 dsisr;
+	__u32 int_pending;	/* Tells the guest if we have an interrupt */
+};
+
+Additions to the page must only occur at the end. Struct fields are always 32
+or 64 bit aligned, depending on them being 32 or 64 bit wide respectively.
+
+Magic page features
+===================
+
+When mapping the magic page using the KVM hypercall KVM_HC_PPC_MAP_MAGIC_PAGE,
+a second return value is passed to the guest. This second return value contains
+a bitmap of available features inside the magic page.
+
+The following enhancements to the magic page are currently available:
+
+  KVM_MAGIC_FEAT_SR		Maps SR registers r/w in the magic page
+
+For enhanced features in the magic page, please check for the existence of the
+feature before using them!
+
+MSR bits
+========
+
+The MSR contains bits that require hypervisor intervention and bits that do
+not require direct hypervisor intervention because they only get interpreted
+when entering the guest or don't have any impact on the hypervisor's behavior.
+
+The following bits are safe to be set inside the guest:
+
+  MSR_EE
+  MSR_RI
+  MSR_CR
+  MSR_ME
+
+If any other bit changes in the MSR, please still use mtmsr(d).
+
+Patched instructions
+====================
+
+The "ld" and "std" instructions are transormed to "lwz" and "stw" instructions
+respectively on 32 bit systems with an added offset of 4 to accomodate for big
+endianness.
+
+The following is a list of mapping the Linux kernel performs when running as
+guest. Implementing any of those mappings is optional, as the instruction traps
+also act on the shared page. So calling privileged instructions still works as
+before.
+
+From			To
+====			==
+
+mfmsr	rX		ld	rX, magic_page->msr
+mfsprg	rX, 0		ld	rX, magic_page->sprg0
+mfsprg	rX, 1		ld	rX, magic_page->sprg1
+mfsprg	rX, 2		ld	rX, magic_page->sprg2
+mfsprg	rX, 3		ld	rX, magic_page->sprg3
+mfsrr0	rX		ld	rX, magic_page->srr0
+mfsrr1	rX		ld	rX, magic_page->srr1
+mfdar	rX		ld	rX, magic_page->dar
+mfdsisr	rX		lwz	rX, magic_page->dsisr
+
+mtmsr	rX		std	rX, magic_page->msr
+mtsprg	0, rX		std	rX, magic_page->sprg0
+mtsprg	1, rX		std	rX, magic_page->sprg1
+mtsprg	2, rX		std	rX, magic_page->sprg2
+mtsprg	3, rX		std	rX, magic_page->sprg3
+mtsrr0	rX		std	rX, magic_page->srr0
+mtsrr1	rX		std	rX, magic_page->srr1
+mtdar	rX		std	rX, magic_page->dar
+mtdsisr	rX		stw	rX, magic_page->dsisr
+
+tlbsync			nop
+
+mtmsrd	rX, 0		b	<special mtmsr section>
+mtmsr	rX		b	<special mtmsr section>
+
+mtmsrd	rX, 1		b	<special mtmsrd section>
+
+[Book3S only]
+mtsrin	rX, rY		b	<special mtsrin section>
+
+[BookE only]
+wrteei	[0|1]		b	<special wrteei section>
+
+
+Some instructions require more logic to determine what's going on than a load
+or store instruction can deliver. To enable patching of those, we keep some
+RAM around where we can live translate instructions to. What happens is the
+following:
+
+	1) copy emulation code to memory
+	2) patch that code to fit the emulated instruction
+	3) patch that code to return to the original pc + 4
+	4) patch the original instruction to branch to the new code
+
+That way we can inject an arbitrary amount of code as replacement for a single
+instruction. This allows us to check for pending interrupts when setting EE=1
+for example.

Documentation/lguest/lguest.c

@@ -1639,15 +1639,6 @@ static void blk_request(struct virtqueue *vq)
 	 */
 	off = out->sector * 512;
 
-	/*
-	 * The block device implements "barriers", where the Guest indicates
-	 * that it wants all previous writes to occur before this write.  We
-	 * don't have a way of asking our kernel to do a barrier, so we just
-	 * synchronize all the data in the file.  Pretty poor, no?
-	 */
-	if (out->type & VIRTIO_BLK_T_BARRIER)
-		fdatasync(vblk->fd);
-
 	/*
 	 * In general the virtio block driver is allowed to try SCSI commands.
 	 * It'd be nice if we supported eject, for example, but we don't.
@@ -1680,6 +1671,13 @@ static void blk_request(struct virtqueue *vq)
 			/* Die, bad Guest, die. */
 			errx(1, "Write past end %llu+%u", off, ret);
 		}
+
+		wlen = sizeof(*in);
+		*in = (ret >= 0 ? VIRTIO_BLK_S_OK : VIRTIO_BLK_S_IOERR);
+	} else if (out->type & VIRTIO_BLK_T_FLUSH) {
+		/* Flush */
+		ret = fdatasync(vblk->fd);
+		verbose("FLUSH fdatasync: %i\n", ret);
 		wlen = sizeof(*in);
 		*in = (ret >= 0 ? VIRTIO_BLK_S_OK : VIRTIO_BLK_S_IOERR);
 	} else {
@@ -1703,15 +1701,6 @@ static void blk_request(struct virtqueue *vq)
 		}
 	}
 
-	/*
-	 * OK, so we noted that it was pretty poor to use an fdatasync as a
-	 * barrier.  But Christoph Hellwig points out that we need a sync
-	 * *afterwards* as well: "Barriers specify no reordering to the front
-	 * or the back."  And Jens Axboe confirmed it, so here we are:
-	 */
-	if (out->type & VIRTIO_BLK_T_BARRIER)
-		fdatasync(vblk->fd);
-
 	/* Finished that request. */
 	add_used(vq, head, wlen);
 }
@@ -1736,8 +1725,8 @@ static void setup_block_file(const char *filename)
 	vblk->fd = open_or_die(filename, O_RDWR|O_LARGEFILE);
 	vblk->len = lseek64(vblk->fd, 0, SEEK_END);
 
-	/* We support barriers. */
-	add_feature(dev, VIRTIO_BLK_F_BARRIER);
+	/* We support FLUSH. */
+	add_feature(dev, VIRTIO_BLK_F_FLUSH);
 
 	/* Tell Guest how many sectors this device has. */
 	conf.capacity = cpu_to_le64(vblk->len / 512);

Documentation/networking/bonding.txt

@@ -765,6 +765,14 @@ xmit_hash_policy
 	does not exist, and the layer2 policy is the only policy.  The
 	layer2+3 value was added for bonding version 3.2.2.
 
+resend_igmp
+
+	Specifies the number of IGMP membership reports to be issued after
+	a failover event. One membership report is issued immediately after
+	the failover, subsequent packets are sent in each 200ms interval.
+
+	The valid range is 0 - 255; the default value is 1. This option
+	was added for bonding version 3.7.0.
 
 3. Configuring Bonding Devices
 ==============================

Documentation/networking/can.txt

@@ -22,6 +22,7 @@ This file contains
       4.1.2 RAW socket option CAN_RAW_ERR_FILTER
       4.1.3 RAW socket option CAN_RAW_LOOPBACK
       4.1.4 RAW socket option CAN_RAW_RECV_OWN_MSGS
+      4.1.5 RAW socket returned message flags
     4.2 Broadcast Manager protocol sockets (SOCK_DGRAM)
     4.3 connected transport protocols (SOCK_SEQPACKET)
     4.4 unconnected transport protocols (SOCK_DGRAM)
@@ -471,6 +472,17 @@ solution for a couple of reasons:
     setsockopt(s, SOL_CAN_RAW, CAN_RAW_RECV_OWN_MSGS,
                &recv_own_msgs, sizeof(recv_own_msgs));
 
+  4.1.5 RAW socket returned message flags
+
+  When using recvmsg() call, the msg->msg_flags may contain following flags:
+
+    MSG_DONTROUTE: set when the received frame was created on the local host.
+
+    MSG_CONFIRM: set when the frame was sent via the socket it is received on.
+      This flag can be interpreted as a 'transmission confirmation' when the
+      CAN driver supports the echo of frames on driver level, see 3.2 and 6.2.
+      In order to receive such messages, CAN_RAW_RECV_OWN_MSGS must be set.
+
   4.2 Broadcast Manager protocol sockets (SOCK_DGRAM)
   4.3 connected transport protocols (SOCK_SEQPACKET)
   4.4 unconnected transport protocols (SOCK_DGRAM)

Documentation/networking/dccp.txt

 DCCP protocol
-============
+=============
 
 
 Contents
 ========
-
 - Introduction
 - Missing features
 - Socket options
+- Sysctl variables
+- IOCTLs
+- Other tunables
 - Notes
 
+
 Introduction
 ============
-
 Datagram Congestion Control Protocol (DCCP) is an unreliable, connection
 oriented protocol designed to solve issues present in UDP and TCP, particularly
 for real-time and multimedia (streaming) traffic.
@@ -29,9 +31,9 @@ It has a base protocol and pluggable congestion control IDs (CCIDs).
 DCCP is a Proposed Standard (RFC 2026), and the homepage for DCCP as a protocol
 is at http://www.ietf.org/html.charters/dccp-charter.html
 
+
 Missing features
 ================
-
 The Linux DCCP implementation does not currently support all the features that are
 specified in RFCs 4340...42.
 
@@ -45,7 +47,6 @@ http://linux-net.osdl.org/index.php/DCCP_Testing#Experimental_DCCP_source_tree
 
 Socket options
 ==============
-
 DCCP_SOCKOPT_SERVICE sets the service. The specification mandates use of
 service codes (RFC 4340, sec. 8.1.2); if this socket option is not set,
 the socket will fall back to 0 (which means that no meaningful service code
@@ -112,6 +113,7 @@ DCCP_SOCKOPT_CCID_TX_INFO
 On unidirectional connections it is useful to close the unused half-connection
 via shutdown (SHUT_WR or SHUT_RD): this will reduce per-packet processing costs.
 
+
 Sysctl variables
 ================
 Several DCCP default parameters can be managed by the following sysctls
@@ -155,15 +157,30 @@ sync_ratelimit = 125 ms
 	sequence-invalid packets on the same socket (RFC 4340, 7.5.4). The unit
 	of this parameter is milliseconds; a value of 0 disables rate-limiting.
 
+
 IOCTLS
 ======
 FIONREAD
 	Works as in udp(7): returns in the `int' argument pointer the size of
 	the next pending datagram in bytes, or 0 when no datagram is pending.
 
+
+Other tunables
+==============
+Per-route rto_min support
+	CCID-2 supports the RTAX_RTO_MIN per-route setting for the minimum value
+	of the RTO timer. This setting can be modified via the 'rto_min' option
+	of iproute2; for example:
+		> ip route change 10.0.0.0/24   rto_min 250j dev wlan0
+		> ip route add    10.0.0.254/32 rto_min 800j dev wlan0
+		> ip route show dev wlan0
+	CCID-3 also supports the rto_min setting: it is used to define the lower
+	bound for the expiry of the nofeedback timer. This can be useful on LANs
+	with very low RTTs (e.g., loopback, Gbit ethernet).
+
+
 Notes
 =====
-
 DCCP does not travel through NAT successfully at present on many boxes. This is
 because the checksum covers the pseudo-header as per TCP and UDP. Linux NAT
 support for DCCP has been added.

Documentation/networking/e1000e.txt

+Linux* Driver for Intel(R) Network Connection
+===============================================================
+
+Intel Gigabit Linux driver.
+Copyright(c) 1999 - 2010 Intel Corporation.
+
+Contents
+========
+
+- Identifying Your Adapter
+- Command Line Parameters
+- Additional Configurations
+- Support
+
+Identifying Your Adapter
+========================
+
+The e1000e driver supports all PCI Express Intel(R) Gigabit Network
+Connections, except those that are 82575, 82576 and 82580-based*.
+
+* NOTE: The Intel(R) PRO/1000 P Dual Port Server Adapter is supported by
+  the e1000 driver, not the e1000e driver due to the 82546 part being used
+  behind a PCI Express bridge.
+
+For more information on how to identify your adapter, go to the Adapter &
+Driver ID Guide at:
+
+    http://support.intel.com/support/go/network/adapter/idguide.htm
+
+For the latest Intel network drivers for Linux, refer to the following
+website.  In the search field, enter your adapter name or type, or use the
+networking link on the left to search for your adapter:
+
+    http://support.intel.com/support/go/network/adapter/home.htm
+
+Command Line Parameters
+=======================
+
+The default value for each parameter is generally the recommended setting,
+unless otherwise noted.
+
+NOTES:  For more information about the InterruptThrottleRate,
+        RxIntDelay, TxIntDelay, RxAbsIntDelay, and TxAbsIntDelay
+        parameters, see the application note at:
+        http://www.intel.com/design/network/applnots/ap450.htm
+
+InterruptThrottleRate
+---------------------
+Valid Range:   0,1,3,4,100-100000 (0=off, 1=dynamic, 3=dynamic conservative,
+                                   4=simplified balancing)
+Default Value: 3
+
+The driver can limit the amount of interrupts per second that the adapter
+will generate for incoming packets. It does this by writing a value to the
+adapter that is based on the maximum amount of interrupts that the adapter
+will generate per second.
+
+Setting InterruptThrottleRate to a value greater or equal to 100
+will program the adapter to send out a maximum of that many interrupts
+per second, even if more packets have come in. This reduces interrupt
+load on the system and can lower CPU utilization under heavy load,
+but will increase latency as packets are not processed as quickly.
+
+The driver has two adaptive modes (setting 1 or 3) in which
+it dynamically adjusts the InterruptThrottleRate value based on the traffic
+that it receives. After determining the type of incoming traffic in the last
+timeframe, it will adjust the InterruptThrottleRate to an appropriate value
+for that traffic.
+
+The algorithm classifies the incoming traffic every interval into
+classes.  Once the class is determined, the InterruptThrottleRate value is
+adjusted to suit that traffic type the best. There are three classes defined:
+"Bulk traffic", for large amounts of packets of normal size; "Low latency",
+for small amounts of traffic and/or a significant percentage of small
+packets; and "Lowest latency", for almost completely small packets or
+minimal traffic.
+
+In dynamic conservative mode, the InterruptThrottleRate value is set to 4000
+for traffic that falls in class "Bulk traffic". If traffic falls in the "Low
+latency" or "Lowest latency" class, the InterruptThrottleRate is increased
+stepwise to 20000. This default mode is suitable for most applications.
+
+For situations where low latency is vital such as cluster or
+grid computing, the algorithm can reduce latency even more when
+InterruptThrottleRate is set to mode 1. In this mode, which operates
+the same as mode 3, the InterruptThrottleRate will be increased stepwise to
+70000 for traffic in class "Lowest latency".
+
+In simplified mode the interrupt rate is based on the ratio of Tx and
+Rx traffic.  If the bytes per second rate is approximately equal the
+interrupt rate will drop as low as 2000 interrupts per second.  If the
+traffic is mostly transmit or mostly receive, the interrupt rate could
+be as high as 8000.
+
+Setting InterruptThrottleRate to 0 turns off any interrupt moderation
+and may improve small packet latency, but is generally not suitable
+for bulk throughput traffic.
+
+NOTE:  InterruptThrottleRate takes precedence over the TxAbsIntDelay and
+       RxAbsIntDelay parameters.  In other words, minimizing the receive
+       and/or transmit absolute delays does not force the controller to
+       generate more interrupts than what the Interrupt Throttle Rate
+       allows.
+
+NOTE:  When e1000e is loaded with default settings and multiple adapters
+       are in use simultaneously, the CPU utilization may increase non-
+       linearly.  In order to limit the CPU utilization without impacting
+       the overall throughput, we recommend that you load the driver as
+       follows:
+
+           modprobe e1000e InterruptThrottleRate=3000,3000,3000
+
+       This sets the InterruptThrottleRate to 3000 interrupts/sec for
+       the first, second, and third instances of the driver.  The range
+       of 2000 to 3000 interrupts per second works on a majority of
+       systems and is a good starting point, but the optimal value will
+       be platform-specific.  If CPU utilization is not a concern, use
+       RX_POLLING (NAPI) and default driver settings.
+
+RxIntDelay
+----------
+Valid Range:   0-65535 (0=off)
+Default Value: 0
+
+This value delays the generation of receive interrupts in units of 1.024
+microseconds.  Receive interrupt reduction can improve CPU efficiency if
+properly tuned for specific network traffic.  Increasing this value adds
+extra latency to frame reception and can end up decreasing the throughput
+of TCP traffic.  If the system is reporting dropped receives, this value
+may be set too high, causing the driver to run out of available receive
+descriptors.
+
+CAUTION:  When setting RxIntDelay to a value other than 0, adapters may
+          hang (stop transmitting) under certain network conditions.  If
+          this occurs a NETDEV WATCHDOG message is logged in the system
+          event log.  In addition, the controller is automatically reset,
+          restoring the network connection.  To eliminate the potential
+          for the hang ensure that RxIntDelay is set to 0.
+
+RxAbsIntDelay
+-------------
+Valid Range:   0-65535 (0=off)
+Default Value: 8
+
+This value, in units of 1.024 microseconds, limits the delay in which a
+receive interrupt is generated.  Useful only if RxIntDelay is non-zero,
+this value ensures that an interrupt is generated after the initial
+packet is received within the set amount of time.  Proper tuning,
+along with RxIntDelay, may improve traffic throughput in specific network
+conditions.
+
+TxIntDelay
+----------
+Valid Range:   0-65535 (0=off)
+Default Value: 8
+
+This value delays the generation of transmit interrupts in units of
+1.024 microseconds.  Transmit interrupt reduction can improve CPU
+efficiency if properly tuned for specific network traffic.  If the
+system is reporting dropped transmits, this value may be set too high
+causing the driver to run out of available transmit descriptors.
+
+TxAbsIntDelay
+-------------
+Valid Range:   0-65535 (0=off)
+Default Value: 32
+
+This value, in units of 1.024 microseconds, limits the delay in which a
+transmit interrupt is generated.  Useful only if TxIntDelay is non-zero,
+this value ensures that an interrupt is generated after the initial
+packet is sent on the wire within the set amount of time.  Proper tuning,
+along with TxIntDelay, may improve traffic throughput in specific
+network conditions.
+
+Copybreak
+---------
+Valid Range:   0-xxxxxxx (0=off)
+Default Value: 256
+
+Driver copies all packets below or equaling this size to a fresh Rx
+buffer before handing it up the stack.
+
+This parameter is different than other parameters, in that it is a
+single (not 1,1,1 etc.) parameter applied to all driver instances and
+it is also available during runtime at
+/sys/module/e1000e/parameters/copybreak
+
+SmartPowerDownEnable
+--------------------
+Valid Range: 0-1
+Default Value:  0 (disabled)
+
+Allows PHY to turn off in lower power states. The user can set this parameter
+in supported chipsets.
+
+KumeranLockLoss
+---------------
+Valid Range: 0-1
+Default Value: 1 (enabled)
+
+This workaround skips resetting the PHY at shutdown for the initial
+silicon releases of ICH8 systems.
+
+IntMode
+-------
+Valid Range: 0-2 (0=legacy, 1=MSI, 2=MSI-X)
+Default Value: 2
+
+Allows changing the interrupt mode at module load time, without requiring a
+recompile. If the driver load fails to enable a specific interrupt mode, the
+driver will try other interrupt modes, from least to most compatible.  The
+interrupt order is MSI-X, MSI, Legacy.  If specifying MSI (IntMode=1)
+interrupts, only MSI and Legacy will be attempted.
+
+CrcStripping
+------------
+Valid Range: 0-1
+Default Value: 1 (enabled)
+
+Strip the CRC from received packets before sending up the network stack.  If
+you have a machine with a BMC enabled but cannot receive IPMI traffic after
+loading or enabling the driver, try disabling this feature.
+
+WriteProtectNVM
+---------------
+Valid Range: 0-1
+Default Value: 1 (enabled)
+
+Set the hardware to ignore all write/erase cycles to the GbE region in the
+ICHx NVM (non-volatile memory).  This feature can be disabled by the
+WriteProtectNVM module parameter (enabled by default) only after a hardware
+reset, but the machine must be power cycled before trying to enable writes.
+
+Note: the kernel boot option iomem=relaxed may need to be set if the kernel
+config option CONFIG_STRICT_DEVMEM=y, if the root user wants to write the
+NVM from user space via ethtool.
+
+Additional Configurations
+=========================
+
+  Jumbo Frames
+  ------------
+  Jumbo Frames support is enabled by changing the MTU to a value larger than
+  the default of 1500.  Use the ifconfig command to increase the MTU size.
+  For example:
+
+       ifconfig eth<x> mtu 9000 up
+
+  This setting is not saved across reboots.
+
+  Notes:
+
+  - The maximum MTU setting for Jumbo Frames is 9216.  This value coincides
+    with the maximum Jumbo Frames size of 9234 bytes.
+
+  - Using Jumbo Frames at 10 or 100 Mbps is not supported and may result in
+    poor performance or loss of link.
+
+  - Some adapters limit Jumbo Frames sized packets to a maximum of
+    4096 bytes and some adapters do not support Jumbo Frames.
+
+
+  Ethtool
+  -------
+  The driver utilizes the ethtool interface for driver configuration and
+  diagnostics, as well as displaying statistical information.  We
+  strongly recommend downloading the latest version of Ethtool at:
+
+  http://sourceforge.net/projects/gkernel.
+
+  Speed and Duplex
+  ----------------
+  Speed and Duplex are configured through the Ethtool* utility. For
+  instructions,  refer to the Ethtool man page.
+
+  Enabling Wake on LAN* (WoL)
+  ---------------------------
+  WoL is configured through the Ethtool* utility. For instructions on
+  enabling WoL with Ethtool, refer to the Ethtool man page.
+
+  WoL will be enabled on the system during the next shut down or reboot.
+  For this driver version, in order to enable WoL, the e1000e driver must be
+  loaded when shutting down or rebooting the system.
+
+  In most cases Wake On LAN is only supported on port A for multiple port
+  adapters. To verify if a port supports Wake on LAN run ethtool eth<X>.
+
+
+Support
+=======
+
+For general information, go to the Intel support website at:
+
+    www.intel.com/support/
+
+or the Intel Wired Networking project hosted by Sourceforge at:
+
+    http://sourceforge.net/projects/e1000
+
+If an issue is identified with the released source code on the supported
+kernel with a supported adapter, email the specific information related
+to the issue to e1000-devel@lists.sf.net

Documentation/networking/ip-sysctl.txt

@@ -1014,6 +1014,12 @@ conf/interface/*:
 accept_ra - BOOLEAN
 	Accept Router Advertisements; autoconfigure using them.
 
+	Possible values are:
+		0 Do not accept Router Advertisements.
+		1 Accept Router Advertisements if forwarding is disabled.
+		2 Overrule forwarding behaviour. Accept Router Advertisements
+		  even if forwarding is enabled.
+
 	Functional default: enabled if local forwarding is disabled.
 			    disabled if local forwarding is enabled.
 
@@ -1075,7 +1081,12 @@ forwarding - BOOLEAN
 	Note: It is recommended to have the same setting on all
 	interfaces; mixed router/host scenarios are rather uncommon.
 
-	FALSE:
+	Possible values are:
+		0 Forwarding disabled
+		1 Forwarding enabled
+		2 Forwarding enabled (Hybrid Mode)
+
+	FALSE (0):
 
 	By default, Host behaviour is assumed.  This means:
 
@@ -1085,18 +1096,24 @@ forwarding - BOOLEAN
 	   Advertisements (and do autoconfiguration).
 	4. If accept_redirects is TRUE (default), accept Redirects.
 
-	TRUE:
+	TRUE (1):
 
 	If local forwarding is enabled, Router behaviour is assumed.
 	This means exactly the reverse from the above:
 
 	1. IsRouter flag is set in Neighbour Advertisements.
 	2. Router Solicitations are not sent.
-	3. Router Advertisements are ignored.
+	3. Router Advertisements are ignored unless accept_ra is 2.
 	4. Redirects are ignored.
 
-	Default: FALSE if global forwarding is disabled (default),
-		 otherwise TRUE.
+	TRUE (2):
+
+	Hybrid mode. Same behaviour as TRUE, except for:
+
+	2. Router Solicitations are being sent when necessary.
+
+	Default: 0 (disabled) if global forwarding is disabled (default),
+		 otherwise 1 (enabled).
 
 hop_limit - INTEGER
 	Default Hop Limit to set.

Documentation/networking/ixgbevf.txt

 Linux* Base Driver for Intel(R) Network Connection
 ==================================================
 
-November 24, 2009
+Intel Gigabit Linux driver.
+Copyright(c) 1999 - 2010 Intel Corporation.
 
 Contents
 ========
 
-- In This Release
 - Identifying Your Adapter
 - Known Issues/Troubleshooting
 - Support
 
-In This Release
-===============
-
 This file describes the ixgbevf Linux* Base Driver for Intel Network
 Connection.
 
@@ -33,7 +30,7 @@ Identifying Your Adapter
 For more information on how to identify your adapter, go to the Adapter &
 Driver ID Guide at:
 
-    http://support.intel.com/support/network/sb/CS-008441.htm
+    http://support.intel.com/support/go/network/adapter/idguide.htm
 
 Known Issues/Troubleshooting
 ============================
@@ -57,34 +54,3 @@ or the Intel Wired Networking project hosted by Sourceforge at:
 If an issue is identified with the released source code on the supported
 kernel with a supported adapter, email the specific information related
 to the issue to e1000-devel@lists.sf.net
-
-License
-=======
-
-Intel 10 Gigabit Linux driver.
-Copyright(c) 1999 - 2009 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.
-
-The full GNU General Public License is included in this distribution in
-the file called "COPYING".
-
-Trademarks
-==========
-
-Intel, Itanium, and Pentium are trademarks or registered trademarks of
-Intel Corporation or its subsidiaries in the United States and other
-countries.
-
-* Other names and brands may be claimed as the property of others.

Documentation/networking/phonet.txt

@@ -112,6 +112,22 @@ However, connect() and getpeername() are not supported, as they did
 not seem useful with Phonet usages (could be added easily).
 
 
+Resource subscription
+---------------------
+
+A Phonet datagram socket can be subscribed to any number of 8-bits
+Phonet resources, as follow:
+
+  uint32_t res = 0xXX;
+  ioctl(fd, SIOCPNADDRESOURCE, &res);
+
+Subscription is similarly cancelled using the SIOCPNDELRESOURCE I/O
+control request, or when the socket is closed.
+
+Note that no more than one socket can be subcribed to any given
+resource at a time. If not, ioctl() will return EBUSY.
+
+
 Phonet Pipe protocol
 --------------------
 
@@ -166,6 +182,46 @@ The pipe protocol provides two socket options at the SOL_PNPIPE level:
     or zero if encapsulation is off.
 
 
+Phonet Pipe-controller Implementation
+-------------------------------------
+
+Phonet Pipe-controller is enabled by selecting the CONFIG_PHONET_PIPECTRLR Kconfig
+option. It is useful when communicating with those Nokia Modems which do not
+implement Pipe controller in them e.g. Nokia Slim Modem used in ST-Ericsson
+U8500 platform.
+
+The implementation is based on the Data Connection Establishment Sequence
+depicted in 'Nokia Wireless Modem API - Wireless_modem_user_guide.pdf'
+document.
+
+It allows a phonet sequenced socket (host-pep) to initiate a Pipe connection
+between itself and a remote pipe-end point (e.g. modem).
+
+The implementation adds socket options at SOL_PNPIPE level:
+
+ PNPIPE_PIPE_HANDLE
+	It accepts an integer argument for setting value of pipe handle.
+
+  PNPIPE_ENABLE accepts one integer value (int). If set to zero, the pipe
+    is disabled. If the value is non-zero, the pipe is enabled. If the pipe
+    is not (yet) connected, ENOTCONN is error is returned.
+
+The implementation also adds socket 'connect'. On calling the 'connect', pipe
+will be created between the source socket and the destination, and the pipe
+state will be set to PIPE_DISABLED.
+
+After a pipe has been created and enabled successfully, the Pipe data can be
+exchanged between the host-pep and remote-pep (modem).
+
+User-space would typically follow below sequence with Pipe controller:-
+-socket
+-bind
+-setsockopt for PNPIPE_PIPE_HANDLE
+-connect
+-setsockopt for PNPIPE_ENCAP_IP
+-setsockopt for PNPIPE_ENABLE
+
+
 Authors
 -------
 

Documentation/networking/timestamping.txt

@@ -172,15 +172,19 @@ struct skb_shared_hwtstamps {
 };
 
 Time stamps for outgoing packets are to be generated as follows:
-- In hard_start_xmit(), check if skb_tx(skb)->hardware is set no-zero.
-  If yes, then the driver is expected to do hardware time stamping.
+- In hard_start_xmit(), check if (skb_shinfo(skb)->tx_flags & SKBTX_HW_TSTAMP)
+  is set no-zero. If yes, then the driver is expected to do hardware time
+  stamping.
 - If this is possible for the skb and requested, then declare
-  that the driver is doing the time stamping by setting the field
-  skb_tx(skb)->in_progress non-zero. You might want to keep a pointer
-  to the associated skb for the next step and not free the skb. A driver
-  not supporting hardware time stamping doesn't do that. A driver must
-  never touch sk_buff::tstamp! It is used to store software generated
-  time stamps by the network subsystem.
+  that the driver is doing the time stamping by setting the flag
+  SKBTX_IN_PROGRESS in skb_shinfo(skb)->tx_flags , e.g. with
+
+      skb_shinfo(skb)->tx_flags |= SKBTX_IN_PROGRESS;
+
+  You might want to keep a pointer to the associated skb for the next step
+  and not free the skb. A driver not supporting hardware time stamping doesn't
+  do that. A driver must never touch sk_buff::tstamp! It is used to store
+  software generated time stamps by the network subsystem.
 - As soon as the driver has sent the packet and/or obtained a
   hardware time stamp for it, it passes the time stamp back by
   calling skb_hwtstamp_tx() with the original skb, the raw
@@ -191,6 +195,6 @@ Time stamps for outgoing packets are to be generated as follows:
   this would occur at a later time in the processing pipeline than other
   software time stamping and therefore could lead to unexpected deltas
   between time stamps.
-- If the driver did not call set skb_tx(skb)->in_progress, then
+- If the driver did not set the SKBTX_IN_PROGRESS flag (see above), then
   dev_hard_start_xmit() checks whether software time stamping
   is wanted as fallback and potentially generates the time stamp.

Documentation/pcmcia/driver-changes.txt

 This file details changes in 2.6 which affect PCMCIA card driver authors:
+* pcmcia_loop_config() and autoconfiguration (as of 2.6.36)
+   If struct pcmcia_device *p_dev->config_flags is set accordingly,
+   pcmcia_loop_config() now sets up certain configuration values
+   automatically, though the driver may still override the settings
+   in the callback function. The following autoconfiguration options
+   are provided at the moment:
+	CONF_AUTO_CHECK_VCC : check for matching Vcc
+	CONF_AUTO_SET_VPP   : set Vpp
+	CONF_AUTO_AUDIO     : auto-enable audio line, if required
+	CONF_AUTO_SET_IO    : set ioport resources (->resource[0,1])
+	CONF_AUTO_SET_IOMEM : set first iomem resource (->resource[2])
+
+* pcmcia_request_configuration -> pcmcia_enable_device (as of 2.6.36)
+   pcmcia_request_configuration() got renamed to pcmcia_enable_device(),
+   as it mirrors pcmcia_disable_device(). Configuration settings are now
+   stored in struct pcmcia_device, e.g. in the fields config_flags,
+   config_index, config_base, vpp.
+
+* pcmcia_request_window changes (as of 2.6.36)
+   Instead of win_req_t, drivers are now requested to fill out
+   struct pcmcia_device *p_dev->resource[2,3,4,5] for up to four ioport
+   ranges. After a call to pcmcia_request_window(), the regions found there
+   are reserved and may be used immediately -- until pcmcia_release_window()
+   is called.
+
 * pcmcia_request_io changes (as of 2.6.36)
    Instead of io_req_t, drivers are now requested to fill out
    struct pcmcia_device *p_dev->resource[0,1] for up to two ioport

Documentation/power/00-INDEX

@@ -14,6 +14,8 @@ interface.txt
 	- Power management user interface in /sys/power
 notifiers.txt
 	- Registering suspend notifiers in device drivers
+opp.txt
+	- Operating Performance Point library
 pci.txt
 	- How the PCI Subsystem Does Power Management
 pm_qos_interface.txt

Documentation/power/interface.txt

@@ -57,7 +57,7 @@ smallest image possible.  In particular, if "0" is written to this file, the
 suspend image will be as small as possible.
 
 Reading from this file will display the current image size limit, which
-is set to 500 MB by default.
+is set to 2/5 of available RAM by default.
 
 /sys/power/pm_trace controls the code which saves the last PM event point in
 the RTC across reboots, so that you can debug a machine that just hangs

Documentation/power/s2ram.txt

@@ -49,6 +49,13 @@ machine that doesn't boot) is:
    device (lspci and /sys/devices/pci* is your friend), and see if you can
    fix it, disable it, or trace into its resume function.
 
+   If no device matches the hash (or any matches appear to be false positives),
+   the culprit may be a device from a loadable kernel module that is not loaded
+   until after the hash is checked. You can check the hash against the current
+   devices again after more modules are loaded using sysfs:
+
+	cat /sys/power/pm_trace_dev_match
+
 For example, the above happens to be the VGA device on my EVO, which I
 used to run with "radeonfb" (it's an ATI Radeon mobility). It turns out
 that "radeonfb" simply cannot resume that device - it tries to set the

Documentation/power/swsusp.txt

@@ -66,7 +66,8 @@ swsusp saves the state of the machine into active swaps and then reboots or
 powerdowns.  You must explicitly specify the swap partition to resume from with
 ``resume='' kernel option. If signature is found it loads and restores saved
 state. If the option ``noresume'' is specified as a boot parameter, it skips
-the resuming.
+the resuming.  If the option ``hibernate=nocompress'' is specified as a boot
+parameter, it saves hibernation image without compression.
 
 In the meantime while the system is suspended you should not add/remove any
 of the hardware, write to the filesystems, etc.

Documentation/powerpc/dts-bindings/fsl/spi.txt

 * SPI (Serial Peripheral Interface)
 
 Required properties:
-- cell-index : SPI controller index.
+- cell-index : QE SPI subblock index.
+		0: QE subblock SPI1
+		1: QE subblock SPI2
 - compatible : should be "fsl,spi".
 - mode : the SPI operation mode, it can be "cpu" or "cpu-qe".
 - reg : Offset and length of the register set for the device
@@ -29,3 +31,23 @@ Example:
 		gpios = <&gpio 18 1	// device reg=<0>
 			 &gpio 19 1>;	// device reg=<1>
 	};
+
+
+* eSPI (Enhanced Serial Peripheral Interface)
+
+Required properties:
+- compatible : should be "fsl,mpc8536-espi".
+- reg : Offset and length of the register set for the device.
+- interrupts : should contain eSPI interrupt, the device has one interrupt.
+- fsl,espi-num-chipselects : the number of the chipselect signals.
+
+Example:
+	spi@110000 {
+		#address-cells = <1>;
+		#size-cells = <0>;
+		compatible = "fsl,mpc8536-espi";
+		reg = <0x110000 0x1000>;
+		interrupts = <53 0x2>;
+		interrupt-parent = <&mpic>;
+		fsl,espi-num-chipselects = <4>;
+	};

Documentation/powerpc/dts-bindings/fsl/usb.txt

@@ -8,6 +8,7 @@ and additions :
 Required properties :
  - compatible : Should be "fsl-usb2-mph" for multi port host USB
    controllers, or "fsl-usb2-dr" for dual role USB controllers
+   or "fsl,mpc5121-usb2-dr" for dual role USB controllers of MPC5121
  - phy_type : For multi port host USB controllers, should be one of
    "ulpi", or "serial". For dual role USB controllers, should be
    one of "ulpi", "utmi", "utmi_wide", or "serial".
@@ -33,6 +34,12 @@ Recommended properties :
  - interrupt-parent : the phandle for the interrupt controller that
    services interrupts for this device.
 
+Optional properties :
+ - fsl,invert-drvvbus : boolean; for MPC5121 USB0 only. Indicates the
+   port power polarity of internal PHY signal DRVVBUS is inverted.
+ - fsl,invert-pwr-fault : boolean; for MPC5121 USB0 only. Indicates
+   the PWR_FAULT signal polarity is inverted.
+
 Example multi port host USB controller device node :
 	usb@22000 {
 		compatible = "fsl-usb2-mph";
@@ -57,3 +64,18 @@ Example dual role USB controller device node :
 		dr_mode = "otg";
 		phy = "ulpi";
 	};
+
+Example dual role USB controller device node for MPC5121ADS:
+
+	usb@4000 {
+		compatible = "fsl,mpc5121-usb2-dr";
+		reg = <0x4000 0x1000>;
+		#address-cells = <1>;
+		#size-cells = <0>;
+		interrupt-parent = < &ipic >;
+		interrupts = <44 0x8>;
+		dr_mode = "otg";
+		phy_type = "utmi_wide";
+		fsl,invert-drvvbus;
+		fsl,invert-pwr-fault;
+	};

Documentation/vm/numa_memory_policy.txt

@@ -424,7 +424,7 @@ a command line tool, numactl(8), exists that allows one to:
 
 + set the shared policy for a shared memory segment via mbind(2)
 
-The numactl(8) tool is packages with the run-time version of the library
+The numactl(8) tool is packaged with the run-time version of the library
 containing the memory policy system call wrappers.  Some distributions
 package the headers and compile-time libraries in a separate development
 package.

Documentation/vm/page-types.c

@@ -478,7 +478,7 @@ static void prepare_hwpoison_fd(void)
 	}
 
 	if (opt_unpoison && !hwpoison_forget_fd) {
-		sprintf(buf, "%s/renew-pfn", hwpoison_debug_fs);
+		sprintf(buf, "%s/unpoison-pfn", hwpoison_debug_fs);
 		hwpoison_forget_fd = checked_open(buf, O_WRONLY);
 	}
 }

Kbuild

@@ -53,6 +53,7 @@ targets += arch/$(SRCARCH)/kernel/asm-offsets.s
 # Default sed regexp - multiline due to syntax constraints
 define sed-y
 	"/^->/{s:->#\(.*\):/* \1 */:; \
+	s:^->\([^ ]*\) [\$$#]*\([-0-9]*\) \(.*\):#define \1 (\2) /* \3 */:; \
 	s:^->\([^ ]*\) [\$$#]*\([^ ]*\) \(.*\):#define \1 \2 /* \3 */:; \
 	s:->::; p;}"
 endef