Merge branch 'master' of git://1984.lsi.us.es/net-next-2.6

Conflicts:
	net/ipv4/route.c

Signed-off-by: Patrick McHardy <kaber@trash.net>

.mailmap

@@ -105,3 +105,4 @@ Uwe Kleine-König <ukleinek@informatik.uni-freiburg.de>
 Uwe Kleine-König <ukl@pengutronix.de>
 Uwe Kleine-König <Uwe.Kleine-Koenig@digi.com>
 Valdis Kletnieks <Valdis.Kletnieks@vt.edu>
+Takashi YOSHII <takashi.yoshii.zj@renesas.com>

CREDITS

@@ -2365,8 +2365,6 @@ E: acme@redhat.com
 W: http://oops.ghostprotocols.net:81/blog/
 P: 1024D/9224DF01 D5DF E3BB E3C8 BCBB F8AD  841A B6AB 4681 9224 DF01
 D: IPX, LLC, DCCP, cyc2x, wl3501_cs, net/ hacks
-S: R. Brasílio Itiberê, 4270/1010 - Água Verde
-S: 80240-060 - Curitiba - Paraná
 S: Brazil
 
 N: Karsten Merker

Documentation/ABI/obsolete/proc-pid-oom_adj

@@ -0,0 +1,22 @@
+What:	/proc/<pid>/oom_adj
+When:	August 2012
+Why:	/proc/<pid>/oom_adj allows userspace to influence the oom killer's
+	badness heuristic used to determine which task to kill when the kernel
+	is out of memory.
+
+	The badness heuristic has since been rewritten since the introduction of
+	this tunable such that its meaning is deprecated.  The value was
+	implemented as a bitshift on a score generated by the badness()
+	function that did not have any precise units of measure.  With the
+	rewrite, the score is given as a proportion of available memory to the
+	task allocating pages, so using a bitshift which grows the score
+	exponentially is, thus, impossible to tune with fine granularity.
+
+	A much more powerful interface, /proc/<pid>/oom_score_adj, was
+	introduced with the oom killer rewrite that allows users to increase or
+	decrease the badness() score linearly.  This interface will replace
+	/proc/<pid>/oom_adj.
+
+	A warning will be emitted to the kernel log if an application uses this
+	deprecated interface.  After it is printed once, future warnings will be
+	suppressed until the kernel is rebooted.

Documentation/ABI/testing/sysfs-bus-rbd

@@ -0,0 +1,83 @@
+What:		/sys/bus/rbd/
+Date:		November 2010
+Contact:	Yehuda Sadeh <yehuda@hq.newdream.net>,
+		Sage Weil <sage@newdream.net>
+Description:
+
+Being used for adding and removing rbd block devices.
+
+Usage: <mon ip addr> <options> <pool name> <rbd image name> [snap name]
+
+ $ echo "192.168.0.1 name=admin rbd foo" > /sys/bus/rbd/add
+
+The snapshot name can be "-" or omitted to map the image read/write. A <dev-id>
+will be assigned for any registered block device. If snapshot is used, it will
+be mapped read-only.
+
+Removal of a device:
+
+  $ echo <dev-id> > /sys/bus/rbd/remove
+
+Entries under /sys/bus/rbd/devices/<dev-id>/
+--------------------------------------------
+
+client_id
+
+	The ceph unique client id that was assigned for this specific session.
+
+major
+
+	The block device major number.
+
+name
+
+	The name of the rbd image.
+
+pool
+
+	The pool where this rbd image resides. The pool-name pair is unique
+	per rados system.
+
+size
+
+	The size (in bytes) of the mapped block device.
+
+refresh
+
+	Writing to this file will reread the image header data and set
+	all relevant datastructures accordingly.
+
+current_snap
+
+	The current snapshot for which the device is mapped.
+
+create_snap
+
+	Create a snapshot:
+
+	 $ echo <snap-name> > /sys/bus/rbd/devices/<dev-id>/snap_create
+
+rollback_snap
+
+	Rolls back data to the specified snapshot. This goes over the entire
+	list of rados blocks and sends a rollback command to each.
+
+	 $ echo <snap-name> > /sys/bus/rbd/devices/<dev-id>/snap_rollback
+
+snap_*
+
+	A directory per each snapshot
+
+
+Entries under /sys/bus/rbd/devices/<dev-id>/snap_<snap-name>
+-------------------------------------------------------------
+
+id
+
+	The rados internal snapshot id assigned for this snapshot
+
+size
+
+	The size of the image when this snapshot was taken.
+
+

Documentation/ABI/testing/sysfs-class-net-batman-adv

@@ -0,0 +1,14 @@
+
+What:           /sys/class/net/<iface>/batman-adv/mesh_iface
+Date:           May 2010
+Contact:        Marek Lindner <lindner_marek@yahoo.de>
+Description:
+                The /sys/class/net/<iface>/batman-adv/mesh_iface file
+                displays the batman mesh interface this <iface>
+                currently is associated with.
+
+What:           /sys/class/net/<iface>/batman-adv/iface_status
+Date:           May 2010
+Contact:        Marek Lindner <lindner_marek@yahoo.de>
+Description:
+                Indicates the status of <iface> as it is seen by batman.

Documentation/ABI/testing/sysfs-class-net-mesh

@@ -0,0 +1,69 @@
+
+What:           /sys/class/net/<mesh_iface>/mesh/aggregated_ogms
+Date:           May 2010
+Contact:        Marek Lindner <lindner_marek@yahoo.de>
+Description:
+                Indicates whether the batman protocol messages of the
+                mesh <mesh_iface> shall be aggregated or not.
+
+What:           /sys/class/net/<mesh_iface>/mesh/bonding
+Date:           June 2010
+Contact:        Simon Wunderlich <siwu@hrz.tu-chemnitz.de>
+Description:
+                Indicates whether the data traffic going through the
+                mesh will be sent using multiple interfaces at the
+                same time (if available).
+
+What:           /sys/class/net/<mesh_iface>/mesh/fragmentation
+Date:           October 2010
+Contact:        Andreas Langer <an.langer@gmx.de>
+Description:
+                Indicates whether the data traffic going through the
+                mesh will be fragmented or silently discarded if the
+                packet size exceeds the outgoing interface MTU.
+
+What:           /sys/class/net/<mesh_iface>/mesh/gw_bandwidth
+Date:           October 2010
+Contact:        Marek Lindner <lindner_marek@yahoo.de>
+Description:
+                Defines the bandwidth which is propagated by this
+                node if gw_mode was set to 'server'.
+
+What:           /sys/class/net/<mesh_iface>/mesh/gw_mode
+Date:           October 2010
+Contact:        Marek Lindner <lindner_marek@yahoo.de>
+Description:
+                Defines the state of the gateway features. Can be
+                either 'off', 'client' or 'server'.
+
+What:           /sys/class/net/<mesh_iface>/mesh/gw_sel_class
+Date:           October 2010
+Contact:        Marek Lindner <lindner_marek@yahoo.de>
+Description:
+                Defines the selection criteria this node will use
+                to choose a gateway if gw_mode was set to 'client'.
+
+What:           /sys/class/net/<mesh_iface>/mesh/orig_interval
+Date:           May 2010
+Contact:        Marek Lindner <lindner_marek@yahoo.de>
+Description:
+                Defines the interval in milliseconds in which batman
+                sends its protocol messages.
+
+What:           /sys/class/net/<mesh_iface>/mesh/hop_penalty
+Date:           Oct 2010
+Contact:        Linus Lüssing <linus.luessing@web.de>
+Description:
+		Defines the penalty which will be applied to an
+		originator message's tq-field on every hop.
+
+What:           /sys/class/net/<mesh_iface>/mesh/vis_mode
+Date:           May 2010
+Contact:        Marek Lindner <lindner_marek@yahoo.de>
+Description:
+                Each batman node only maintains information about its
+                own local neighborhood, therefore generating graphs
+                showing the topology of the entire mesh is not easily
+                feasible without having a central instance to collect
+                the local topologies from all nodes. This file allows
+                to activate the collecting (server) mode.

Documentation/ABI/testing/sysfs-platform-asus-laptop

@@ -47,6 +47,20 @@ Date:		January 2007
 KernelVersion:	2.6.20
 Contact:	"Corentin Chary" <corentincj@iksaif.net>
 Description:
-		Control the bluetooth device. 1 means on, 0 means off.
+		Control the wlan device. 1 means on, 0 means off.
 		This may control the led, the device or both.
 Users:		Lapsus
+
+What:		/sys/devices/platform/asus_laptop/wimax
+Date:		October 2010
+KernelVersion:	2.6.37
+Contact:	"Corentin Chary" <corentincj@iksaif.net>
+Description:
+		Control the wimax device. 1 means on, 0 means off.
+
+What:		/sys/devices/platform/asus_laptop/wwan
+Date:		October 2010
+KernelVersion:	2.6.37
+Contact:	"Corentin Chary" <corentincj@iksaif.net>
+Description:
+		Control the wwan (3G) device. 1 means on, 0 means off.

Documentation/ABI/testing/sysfs-platform-eeepc-wmi

@@ -0,0 +1,10 @@
+What:		/sys/devices/platform/eeepc-wmi/cpufv
+Date:		Oct 2010
+KernelVersion:	2.6.37
+Contact:	"Corentin Chary" <corentincj@iksaif.net>
+Description:
+		Change CPU clock configuration (write-only).
+		There are three available clock configuration:
+		    * 0 -> Super Performance Mode
+		    * 1 -> High Performance Mode
+		    * 2 -> Power Saving Mode

Documentation/ABI/testing/sysfs-tty

@@ -0,0 +1,19 @@
+What:		/sys/class/tty/console/active
+Date:		Nov 2010
+Contact:	Kay Sievers <kay.sievers@vrfy.org>
+Description:
+		 Shows the list of currently configured
+		 console devices, like 'tty1 ttyS0'.
+		 The last entry in the file is the active
+		 device connected to /dev/console.
+		 The file supports poll() to detect virtual
+		 console switches.
+
+What:		/sys/class/tty/tty0/active
+Date:		Nov 2010
+Contact:	Kay Sievers <kay.sievers@vrfy.org>
+Description:
+		 Shows the currently active virtual console
+		 device, like 'tty1'.
+		 The file supports poll() to detect virtual
+		 console switches.

Documentation/DocBook/80211.tmpl

@@ -146,6 +146,7 @@
 !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_cqm_pktloss_notify
 !Finclude/net/cfg80211.h cfg80211_michael_mic_failure
       </chapter>
       <chapter>
@@ -332,10 +333,16 @@
           <title>functions/definitions</title>
 !Finclude/net/mac80211.h ieee80211_rx_status
 !Finclude/net/mac80211.h mac80211_rx_flags
+!Finclude/net/mac80211.h mac80211_tx_control_flags
+!Finclude/net/mac80211.h mac80211_rate_control_flags
+!Finclude/net/mac80211.h ieee80211_tx_rate
 !Finclude/net/mac80211.h ieee80211_tx_info
+!Finclude/net/mac80211.h ieee80211_tx_info_clear_status
 !Finclude/net/mac80211.h ieee80211_rx
+!Finclude/net/mac80211.h ieee80211_rx_ni
 !Finclude/net/mac80211.h ieee80211_rx_irqsafe
 !Finclude/net/mac80211.h ieee80211_tx_status
+!Finclude/net/mac80211.h ieee80211_tx_status_ni
 !Finclude/net/mac80211.h ieee80211_tx_status_irqsafe
 !Finclude/net/mac80211.h ieee80211_rts_get
 !Finclude/net/mac80211.h ieee80211_rts_duration
@@ -346,6 +353,7 @@
 !Finclude/net/mac80211.h ieee80211_stop_queue
 !Finclude/net/mac80211.h ieee80211_wake_queues
 !Finclude/net/mac80211.h ieee80211_stop_queues
+!Finclude/net/mac80211.h ieee80211_queue_stopped
         </sect1>
       </chapter>
 
@@ -354,6 +362,13 @@
 !Pinclude/net/mac80211.h Frame filtering
 !Finclude/net/mac80211.h ieee80211_filter_flags
       </chapter>
+
+      <chapter id="workqueue">
+        <title>The mac80211 workqueue</title>
+!Pinclude/net/mac80211.h mac80211 workqueue
+!Finclude/net/mac80211.h ieee80211_queue_work
+!Finclude/net/mac80211.h ieee80211_queue_delayed_work
+      </chapter>
     </part>
 
     <part id="advanced">
@@ -374,6 +389,9 @@
 !Finclude/net/mac80211.h set_key_cmd
 !Finclude/net/mac80211.h ieee80211_key_conf
 !Finclude/net/mac80211.h ieee80211_key_flags
+!Finclude/net/mac80211.h ieee80211_tkip_key_type
+!Finclude/net/mac80211.h ieee80211_get_tkip_key
+!Finclude/net/mac80211.h ieee80211_key_removed
       </chapter>
 
       <chapter id="powersave">
@@ -417,6 +435,18 @@
           supported by mac80211, add notes about supporting hw crypto
           with it.
         </para>
+!Finclude/net/mac80211.h ieee80211_iterate_active_interfaces
+!Finclude/net/mac80211.h ieee80211_iterate_active_interfaces_atomic
+      </chapter>
+
+      <chapter id="station-handling">
+        <title>Station handling</title>
+        <para>TODO</para>
+!Finclude/net/mac80211.h ieee80211_sta
+!Finclude/net/mac80211.h sta_notify_cmd
+!Finclude/net/mac80211.h ieee80211_find_sta
+!Finclude/net/mac80211.h ieee80211_find_sta_by_ifaddr
+!Finclude/net/mac80211.h ieee80211_sta_block_awake
       </chapter>
 
       <chapter id="hardware-scan-offload">
@@ -424,6 +454,28 @@
         <para>TBD</para>
 !Finclude/net/mac80211.h ieee80211_scan_completed
       </chapter>
+
+      <chapter id="aggregation">
+        <title>Aggregation</title>
+        <sect1>
+          <title>TX A-MPDU aggregation</title>
+!Pnet/mac80211/agg-tx.c TX A-MPDU aggregation
+!Cnet/mac80211/agg-tx.c
+        </sect1>
+        <sect1>
+          <title>RX A-MPDU aggregation</title>
+!Pnet/mac80211/agg-rx.c RX A-MPDU aggregation
+!Cnet/mac80211/agg-rx.c
+        </sect1>
+!Finclude/net/mac80211.h ieee80211_ampdu_mlme_action
+      </chapter>
+
+      <chapter id="smps">
+        <title>Spatial Multiplexing Powersave (SMPS)</title>
+!Pinclude/net/mac80211.h Spatial multiplexing power save
+!Finclude/net/mac80211.h ieee80211_request_smps
+!Finclude/net/mac80211.h ieee80211_smps_mode
+      </chapter>
     </part>
 
     <part id="rate-control">
@@ -435,9 +487,16 @@
          interface and how it relates to mac80211 and drivers.
         </para>
       </partintro>
-      <chapter id="dummy">
-        <title>dummy chapter</title>
+      <chapter id="ratecontrol-api">
+        <title>Rate Control API</title>
         <para>TBD</para>
+!Finclude/net/mac80211.h ieee80211_start_tx_ba_session
+!Finclude/net/mac80211.h ieee80211_start_tx_ba_cb_irqsafe
+!Finclude/net/mac80211.h ieee80211_stop_tx_ba_session
+!Finclude/net/mac80211.h ieee80211_stop_tx_ba_cb_irqsafe
+!Finclude/net/mac80211.h rate_control_changed
+!Finclude/net/mac80211.h ieee80211_tx_rate_control
+!Finclude/net/mac80211.h rate_control_send_low
       </chapter>
     </part>
 
@@ -485,6 +544,13 @@
         </sect1>
       </chapter>
 
+      <chapter id="aggregation-internals">
+        <title>Aggregation</title>
+!Fnet/mac80211/sta_info.h sta_ampdu_mlme
+!Fnet/mac80211/sta_info.h tid_ampdu_tx
+!Fnet/mac80211/sta_info.h tid_ampdu_rx
+      </chapter>
+
       <chapter id="synchronisation">
         <title>Synchronisation</title>
         <para>TBD</para>

Documentation/DocBook/device-drivers.tmpl

@@ -303,6 +303,10 @@ X!Idrivers/video/console/fonts.c
 !Edrivers/input/input.c
 !Edrivers/input/ff-core.c
 !Edrivers/input/ff-memless.c
+     </sect1>
+     <sect1><title>Multitouch Library</title>
+!Iinclude/linux/input/mt.h
+!Edrivers/input/input-mt.c
      </sect1>
      <sect1><title>Polled input devices</title>
 !Iinclude/linux/input-polldev.h

Documentation/DocBook/sh.tmpl

@@ -79,10 +79,6 @@
       </sect2>
     </sect1>
   </chapter>
-  <chapter id="clk">
-    <title>Clock Framework Extensions</title>
-!Iinclude/linux/sh_clk.h
-  </chapter>
   <chapter id="mach">
     <title>Machine Specific Interfaces</title>
     <sect1 id="dreamcast">

Documentation/DocBook/uio-howto.tmpl

@@ -16,7 +16,7 @@
 	</orgname>
 
 	<address>
-	   <email>hjk@linutronix.de</email>
+	   <email>hjk@hansjkoch.de</email>
 	</address>
     </affiliation>
 </author>
@@ -114,7 +114,7 @@ GPL version 2.
 
 <para>If you know of any translations for this document, or you are
 interested in translating it, please email me
-<email>hjk@linutronix.de</email>.
+<email>hjk@hansjkoch.de</email>.
 </para>
 </sect1>
 
@@ -171,7 +171,7 @@ interested in translating it, please email me
 <title>Feedback</title>
 	<para>Find something wrong with this document? (Or perhaps something
 	right?) I would love to hear from you. Please email me at
-	<email>hjk@linutronix.de</email>.</para>
+	<email>hjk@hansjkoch.de</email>.</para>
 </sect1>
 </chapter>
 

Documentation/DocBook/v4l/func-ioctl.xml

@@ -34,8 +34,7 @@
       <varlistentry>
 	<term><parameter>request</parameter></term>
 	<listitem>
-	  <para>V4L2 ioctl request code as defined in the <link
-linkend="videodev">videodev.h</link> header file, for example
+	  <para>V4L2 ioctl request code as defined in the <filename>videodev2.h</filename> header file, for example
 VIDIOC_QUERYCAP.</para>
 	</listitem>
       </varlistentry>
@@ -57,7 +56,7 @@ file descriptor. An ioctl <parameter>request</parameter> has encoded
 in it whether the argument is an input, output or read/write
 parameter, and the size of the argument <parameter>argp</parameter> in
 bytes. Macros and defines specifying V4L2 ioctl requests are located
-in the <link linkend="videodev">videodev.h</link> header file.
+in the <filename>videodev2.h</filename> header file.
 Applications should use their own copy, not include the version in the
 kernel sources on the system they compile on. All V4L2 ioctl requests,
 their respective function and parameters are specified in <xref

Documentation/DocBook/v4l/pixfmt.xml

@@ -142,8 +142,8 @@ leftmost pixel of the second row from the top, and so on. The last row
 has just as many pad bytes after it as the other rows.</para>
 
     <para>In V4L2 each format has an identifier which looks like
-<constant>PIX_FMT_XXX</constant>, defined in the <link
-linkend="videodev">videodev.h</link> header file. These identifiers
+<constant>PIX_FMT_XXX</constant>, defined in the <filename>videodev2.h</filename>
+header file. These identifiers
 represent <link linkend="v4l2-fourcc">four character codes</link>
 which are also listed below, however they are not the same as those
 used in the Windows world.</para>

Documentation/Makefile

@@ -1,3 +1,3 @@
 obj-m := DocBook/ accounting/ auxdisplay/ connector/ \
 	filesystems/ filesystems/configfs/ ia64/ laptops/ networking/ \
-	pcmcia/ spi/ timers/ video4linux/ vm/ watchdog/src/
+	pcmcia/ spi/ timers/ vm/ watchdog/src/

Documentation/RCU/trace.txt

@@ -1,18 +1,22 @@
 CONFIG_RCU_TRACE debugfs Files and Formats
 
 
-The rcutree implementation of RCU provides debugfs trace output that
-summarizes counters and state.  This information is useful for debugging
-RCU itself, and can sometimes also help to debug abuses of RCU.
-The following sections describe the debugfs files and formats.
+The rcutree and rcutiny implementations of RCU provide debugfs trace
+output that summarizes counters and state.  This information is useful for
+debugging RCU itself, and can sometimes also help to debug abuses of RCU.
+The following sections describe the debugfs files and formats, first
+for rcutree and next for rcutiny.
 
 
-Hierarchical RCU debugfs Files and Formats
+CONFIG_TREE_RCU and CONFIG_TREE_PREEMPT_RCU debugfs Files and Formats
 
-This implementation of RCU provides three debugfs files under the
+These implementations of RCU provides five debugfs files under the
 top-level directory RCU: rcu/rcudata (which displays fields in struct
-rcu_data), rcu/rcugp (which displays grace-period counters), and
-rcu/rcuhier (which displays the struct rcu_node hierarchy).
+rcu_data), rcu/rcudata.csv (which is a .csv spreadsheet version of
+rcu/rcudata), rcu/rcugp (which displays grace-period counters),
+rcu/rcuhier (which displays the struct rcu_node hierarchy), and
+rcu/rcu_pending (which displays counts of the reasons that the
+rcu_pending() function decided that there was core RCU work to do).
 
 The output of "cat rcu/rcudata" looks as follows:
 
@@ -130,7 +134,8 @@ o	"ci" is the number of RCU callbacks that have been invoked for
 	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.
+	this CPU going offline.  These orphaned callbacks have been moved
+	to an arbitrarily chosen online CPU.
 
 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
@@ -168,12 +173,12 @@ o	"gpnum" is the number of grace periods that have started.  It is
 
 The output of "cat rcu/rcuhier" looks as follows, with very long lines:
 
-c=6902 g=6903 s=2 jfq=3 j=72c7 nfqs=13142/nfqsng=0(13142) fqlh=6 oqlen=0
+c=6902 g=6903 s=2 jfq=3 j=72c7 nfqs=13142/nfqsng=0(13142) fqlh=6
 1/1 .>. 0:127 ^0    
 3/3 .>. 0:35 ^0    0/0 .>. 36:71 ^1    0/0 .>. 72:107 ^2    0/0 .>. 108:127 ^3    
 3/3f .>. 0:5 ^0    2/3 .>. 6:11 ^1    0/0 .>. 12:17 ^2    0/0 .>. 18:23 ^3    0/0 .>. 24:29 ^4    0/0 .>. 30:35 ^5    0/0 .>. 36:41 ^0    0/0 .>. 42:47 ^1    0/0 .>. 48:53 ^2    0/0 .>. 54:59 ^3    0/0 .>. 60:65 ^4    0/0 .>. 66:71 ^5    0/0 .>. 72:77 ^0    0/0 .>. 78:83 ^1    0/0 .>. 84:89 ^2    0/0 .>. 90:95 ^3    0/0 .>. 96:101 ^4    0/0 .>. 102:107 ^5    0/0 .>. 108:113 ^0    0/0 .>. 114:119 ^1    0/0 .>. 120:125 ^2    0/0 .>. 126:127 ^3    
 rcu_bh:
-c=-226 g=-226 s=1 jfq=-5701 j=72c7 nfqs=88/nfqsng=0(88) fqlh=0 oqlen=0
+c=-226 g=-226 s=1 jfq=-5701 j=72c7 nfqs=88/nfqsng=0(88) fqlh=0
 0/1 .>. 0:127 ^0    
 0/3 .>. 0:35 ^0    0/0 .>. 36:71 ^1    0/0 .>. 72:107 ^2    0/0 .>. 108:127 ^3    
 0/3f .>. 0:5 ^0    0/3 .>. 6:11 ^1    0/0 .>. 12:17 ^2    0/0 .>. 18:23 ^3    0/0 .>. 24:29 ^4    0/0 .>. 30:35 ^5    0/0 .>. 36:41 ^0    0/0 .>. 42:47 ^1    0/0 .>. 48:53 ^2    0/0 .>. 54:59 ^3    0/0 .>. 60:65 ^4    0/0 .>. 66:71 ^5    0/0 .>. 72:77 ^0    0/0 .>. 78:83 ^1    0/0 .>. 84:89 ^2    0/0 .>. 90:95 ^3    0/0 .>. 96:101 ^4    0/0 .>. 102:107 ^5    0/0 .>. 108:113 ^0    0/0 .>. 114:119 ^1    0/0 .>. 120:125 ^2    0/0 .>. 126:127 ^3
@@ -212,11 +217,6 @@ o	"fqlh" is the number of calls to force_quiescent_state() that
 	exited immediately (without even being counted in nfqs above)
 	due to contention on ->fqslock.
 
-o	"oqlen" is the number of callbacks on the "orphan" callback
-	list.  RCU callbacks are placed on this list by CPUs going
-	offline, and are "adopted" either by the CPU helping the outgoing
-	CPU or by the next rcu_barrier*() call, whichever comes first.
-
 o	Each element of the form "1/1 0:127 ^0" represents one struct
 	rcu_node.  Each line represents one level of the hierarchy, from
 	root to leaves.  It is best to think of the rcu_data structures
@@ -326,3 +326,115 @@ o	"nn" is the number of times that this CPU needed nothing.  Alert
 	readers will note that the rcu "nn" number for a given CPU very
 	closely matches the rcu_bh "np" number for that same CPU.  This
 	is due to short-circuit evaluation in rcu_pending().
+
+
+CONFIG_TINY_RCU and CONFIG_TINY_PREEMPT_RCU debugfs Files and Formats
+
+These implementations of RCU provides a single debugfs file under the
+top-level directory RCU, namely rcu/rcudata, which displays fields in
+rcu_bh_ctrlblk, rcu_sched_ctrlblk and, for CONFIG_TINY_PREEMPT_RCU,
+rcu_preempt_ctrlblk.
+
+The output of "cat rcu/rcudata" is as follows:
+
+rcu_preempt: qlen=24 gp=1097669 g197/p197/c197 tasks=...
+             ttb=. btg=no ntb=184 neb=0 nnb=183 j=01f7 bt=0274
+             normal balk: nt=1097669 gt=0 bt=371 b=0 ny=25073378 nos=0
+             exp balk: bt=0 nos=0
+rcu_sched: qlen: 0
+rcu_bh: qlen: 0
+
+This is split into rcu_preempt, rcu_sched, and rcu_bh sections, with the
+rcu_preempt section appearing only in CONFIG_TINY_PREEMPT_RCU builds.
+The last three lines of the rcu_preempt section appear only in
+CONFIG_RCU_BOOST kernel builds.  The fields are as follows:
+
+o	"qlen" is the number of RCU callbacks currently waiting either
+	for an RCU grace period or waiting to be invoked.  This is the
+	only field present for rcu_sched and rcu_bh, due to the
+	short-circuiting of grace period in those two cases.
+
+o	"gp" is the number of grace periods that have completed.
+
+o	"g197/p197/c197" displays the grace-period state, with the
+	"g" number being the number of grace periods that have started
+	(mod 256), the "p" number being the number of grace periods
+	that the CPU has responded to (also mod 256), and the "c"
+	number being the number of grace periods that have completed
+	(once again mode 256).
+
+	Why have both "gp" and "g"?  Because the data flowing into
+	"gp" is only present in a CONFIG_RCU_TRACE kernel.
+
+o	"tasks" is a set of bits.  The first bit is "T" if there are
+	currently tasks that have recently blocked within an RCU
+	read-side critical section, the second bit is "N" if any of the
+	aforementioned tasks are blocking the current RCU grace period,
+	and the third bit is "E" if any of the aforementioned tasks are
+	blocking the current expedited grace period.  Each bit is "."
+	if the corresponding condition does not hold.
+
+o	"ttb" is a single bit.  It is "B" if any of the blocked tasks
+	need to be priority boosted and "." otherwise.
+
+o	"btg" indicates whether boosting has been carried out during
+	the current grace period, with "exp" indicating that boosting
+	is in progress for an expedited grace period, "no" indicating
+	that boosting has not yet started for a normal grace period,
+	"begun" indicating that boosting has bebug for a normal grace
+	period, and "done" indicating that boosting has completed for
+	a normal grace period.
+
+o	"ntb" is the total number of tasks subjected to RCU priority boosting
+	periods since boot.
+
+o	"neb" is the number of expedited grace periods that have had
+	to resort to RCU priority boosting since boot.
+
+o	"nnb" is the number of normal grace periods that have had
+	to resort to RCU priority boosting since boot.
+
+o	"j" is the low-order 12 bits of the jiffies counter in hexadecimal.
+
+o	"bt" is the low-order 12 bits of the value that the jiffies counter
+	will have at the next time that boosting is scheduled to begin.
+
+o	In the line beginning with "normal balk", the fields are as follows:
+
+	o	"nt" is the number of times that the system balked from
+		boosting because there were no blocked tasks to boost.
+		Note that the system will balk from boosting even if the
+		grace period is overdue when the currently running task
+		is looping within an RCU read-side critical section.
+		There is no point in boosting in this case, because
+		boosting a running task won't make it run any faster.
+
+	o	"gt" is the number of times that the system balked
+		from boosting because, although there were blocked tasks,
+		none of them were preventing the current grace period
+		from completing.
+
+	o	"bt" is the number of times that the system balked
+		from boosting because boosting was already in progress.
+
+	o	"b" is the number of times that the system balked from
+		boosting because boosting had already completed for
+		the grace period in question.
+
+	o	"ny" is the number of times that the system balked from
+		boosting because it was not yet time to start boosting
+		the grace period in question.
+
+	o	"nos" is the number of times that the system balked from
+		boosting for inexplicable ("not otherwise specified")
+		reasons.  This can actually happen due to races involving
+		increments of the jiffies counter.
+
+o	In the line beginning with "exp balk", the fields are as follows:
+
+	o	"bt" is the number of times that the system balked from
+		boosting because there were no blocked tasks to boost.
+
+	o	"nos" is the number of times that the system balked from
+		 boosting for inexplicable ("not otherwise specified")
+		 reasons.

Documentation/accounting/getdelays.c

@@ -516,6 +516,7 @@ int main(int argc, char *argv[])
 			default:
 				fprintf(stderr, "Unknown nla_type %d\n",
 					na->nla_type);
+			case TASKSTATS_TYPE_NULL:
 				break;
 			}
 			na = (struct nlattr *) (GENLMSG_DATA(&msg) + len);

Documentation/arm/00-INDEX

@@ -34,3 +34,5 @@ memory.txt
 	- description of the virtual memory layout
 nwfpe/
 	- NWFPE floating point emulator documentation
+swp_emulation
+	- SWP/SWPB emulation handler/logging description

Documentation/arm/OMAP/DSS

@@ -255,9 +255,10 @@ framebuffer parameters.
 Kernel boot arguments
 ---------------------
 
-vram=<size>
-	- Amount of total VRAM to preallocate. For example, "10M". omapfb
-	  allocates memory for framebuffers from VRAM.
+vram=<size>[,<physaddr>]
+	- Amount of total VRAM to preallocate and optionally a physical start
+	  memory address. For example, "10M". omapfb allocates memory for
+	  framebuffers from VRAM.
 
 omapfb.mode=<display>:<mode>[,...]
 	- Default video mode for specified displays. For example,

Documentation/arm/OMAP/omap_pm

@@ -127,3 +127,28 @@ implementation needs:
 10. (*pdata->cpu_set_freq)(unsigned long f)
 
 11. (*pdata->cpu_get_freq)(void)
+
+Customizing OPP for platform
+============================
+Defining CONFIG_PM should enable OPP layer for the silicon
+and the registration of OPP table should take place automatically.
+However, in special cases, the default OPP table may need to be
+tweaked, for e.g.:
+ * enable default OPPs which are disabled by default, but which
+   could be enabled on a platform
+ * Disable an unsupported OPP on the platform
+ * Define and add a custom opp table entry
+in these cases, the board file needs to do additional steps as follows:
+arch/arm/mach-omapx/board-xyz.c
+	#include "pm.h"
+	....
+	static void __init omap_xyz_init_irq(void)
+	{
+		....
+		/* Initialize the default table */
+		omapx_opp_init();
+		/* Do customization to the defaults */
+		....
+	}
+NOTE: omapx_opp_init will be omap3_opp_init or as required
+based on the omap family.

Documentation/arm/swp_emulation

@@ -0,0 +1,27 @@
+Software emulation of deprecated SWP instruction (CONFIG_SWP_EMULATE)
+---------------------------------------------------------------------
+
+ARMv6 architecture deprecates use of the SWP/SWPB instructions, and recommeds
+moving to the load-locked/store-conditional instructions LDREX and STREX.
+
+ARMv7 multiprocessing extensions introduce the ability to disable these
+instructions, triggering an undefined instruction exception when executed.
+Trapped instructions are emulated using an LDREX/STREX or LDREXB/STREXB
+sequence. If a memory access fault (an abort) occurs, a segmentation fault is
+signalled to the triggering process.
+
+/proc/cpu/swp_emulation holds some statistics/information, including the PID of
+the last process to trigger the emulation to be invocated. For example:
+---
+Emulated SWP:		12
+Emulated SWPB:		0
+Aborted SWP{B}:		1
+Last process:		314
+---
+
+NOTE: when accessing uncached shared regions, LDREX/STREX rely on an external
+transaction monitoring block called a global monitor to maintain update
+atomicity. If your system does not implement a global monitor, this option can
+cause programs that perform SWP operations to uncached memory to deadlock, as
+the STREX operation will always fail.
+

Documentation/block/switching-sched.txt

@@ -16,7 +16,7 @@ you can do so by typing:
 As of the Linux 2.6.10 kernel, it is now possible to change the
 IO scheduler for a given block device on the fly (thus making it possible,
 for instance, to set the CFQ scheduler for the system default, but
-set a specific device to use the anticipatory or noop schedulers - which
+set a specific device to use the deadline or noop schedulers - which
 can improve that device's throughput).
 
 To set a specific scheduler, simply do this:
@@ -31,7 +31,7 @@ a "cat /sys/block/DEV/queue/scheduler" - the list of valid names
 will be displayed, with the currently selected scheduler in brackets:
 
 # cat /sys/block/hda/queue/scheduler
-noop anticipatory deadline [cfq]
-# echo anticipatory > /sys/block/hda/queue/scheduler
+noop deadline [cfq]
+# echo deadline > /sys/block/hda/queue/scheduler
 # cat /sys/block/hda/queue/scheduler
-noop [anticipatory] deadline cfq
+noop [deadline] cfq

Documentation/development-process/2.Process

@@ -154,7 +154,7 @@ The stages that a patch goes through are, generally:
    inclusion, it should be accepted by a relevant subsystem maintainer -
    though this acceptance is not a guarantee that the patch will make it
    all the way to the mainline.  The patch will show up in the maintainer's
-   subsystem tree and into the staging trees (described below).  When the
+   subsystem tree and into the -next trees (described below).  When the
    process works, this step leads to more extensive review of the patch and
    the discovery of any problems resulting from the integration of this
    patch with work being done by others.
@@ -236,7 +236,7 @@ finding the right maintainer.  Sending patches directly to Linus is not
 normally the right way to go.
 
 
-2.4: STAGING TREES
+2.4: NEXT TREES
 
 The chain of subsystem trees guides the flow of patches into the kernel,
 but it also raises an interesting question: what if somebody wants to look
@@ -250,7 +250,7 @@ changes land in the mainline kernel.  One could pull changes from all of
 the interesting subsystem trees, but that would be a big and error-prone
 job.
 
-The answer comes in the form of staging trees, where subsystem trees are
+The answer comes in the form of -next trees, where subsystem trees are
 collected for testing and review.  The older of these trees, maintained by
 Andrew Morton, is called "-mm" (for memory management, which is how it got
 started).  The -mm tree integrates patches from a long list of subsystem
@@ -275,7 +275,7 @@ directory at:
 Use of the MMOTM tree is likely to be a frustrating experience, though;
 there is a definite chance that it will not even compile.
 
-The other staging tree, started more recently, is linux-next, maintained by
+The other -next tree, started more recently, is linux-next, maintained by
 Stephen Rothwell.  The linux-next tree is, by design, a snapshot of what
 the mainline is expected to look like after the next merge window closes.
 Linux-next trees are announced on the linux-kernel and linux-next mailing
@@ -303,12 +303,25 @@ volatility of linux-next tends to make it a difficult development target.
 See http://lwn.net/Articles/289013/ for more information on this topic, and
 stay tuned; much is still in flux where linux-next is involved.
 
-Besides the mmotm and linux-next trees, the kernel source tree now contains
-the drivers/staging/ directory and many sub-directories for drivers or
-filesystems that are on their way to being added to the kernel tree
-proper, but they remain in drivers/staging/ while they still need more
-work.
-
+2.4.1: STAGING TREES
+
+The kernel source tree now contains the drivers/staging/ directory, where
+many sub-directories for drivers or filesystems that are on their way to
+being added to the kernel tree live.  They remain in drivers/staging while
+they still need more work; once complete, they can be moved into the
+kernel proper.  This is a way to keep track of drivers that aren't
+up to Linux kernel coding or quality standards, but people may want to use
+them and track development.
+
+Greg Kroah-Hartman currently (as of 2.6.36) maintains the staging tree.
+Drivers that still need work are sent to him, with each driver having
+its own subdirectory in drivers/staging/.  Along with the driver source
+files, a TODO file should be present in the directory as well.  The TODO
+file lists the pending work that the driver needs for acceptance into
+the kernel proper, as well as a list of people that should be Cc'd for any
+patches to the driver.  Staging drivers that don't currently build should
+have their config entries depend upon CONFIG_BROKEN.  Once they can
+be successfully built without outside patches, CONFIG_BROKEN can be removed.
 
 2.5: TOOLS
 

Documentation/dontdiff

@@ -62,6 +62,10 @@ aic7*reg_print.c*
 aic7*seq.h*
 aicasm
 aicdb.h*
+altivec1.c
+altivec2.c
+altivec4.c
+altivec8.c
 asm-offsets.h
 asm_offsets.h
 autoconf.h*
@@ -76,6 +80,7 @@ btfixupprep
 build
 bvmlinux
 bzImage*
+capflags.c
 classlist.h*
 comp*.log
 compile.h*
@@ -94,6 +99,7 @@ devlist.h*
 docproc
 elf2ecoff
 elfconfig.h*
+evergreen_reg_safe.h
 fixdep
 flask.h
 fore200e_mkfirm
@@ -108,9 +114,16 @@ genksyms
 *_gray256.c
 ihex2fw
 ikconfig.h*
+inat-tables.c
 initramfs_data.cpio
 initramfs_data.cpio.gz
 initramfs_list
+int16.c
+int1.c
+int2.c
+int32.c
+int4.c
+int8.c
 kallsyms
 kconfig
 keywords.c
@@ -140,6 +153,7 @@ mkprep
 mktables
 mktree
 modpost
+modules.builtin
 modules.order
 modversions.h*
 ncscope.*
@@ -153,14 +167,23 @@ pca200e.bin
 pca200e_ecd.bin2
 piggy.gz
 piggyback
+piggy.S
 pnmtologo
 ppc_defs.h*
 pss_boot.h
 qconf
+r100_reg_safe.h
+r200_reg_safe.h
+r300_reg_safe.h
+r420_reg_safe.h
+r600_reg_safe.h
 raid6altivec*.c
 raid6int*.c
 raid6tables.c
 relocs
+rn50_reg_safe.h
+rs600_reg_safe.h
+rv515_reg_safe.h
 series
 setup
 setup.bin
@@ -169,6 +192,7 @@ sImage
 sm_tbl*
 split-include
 syscalltab.h
+tables.c
 tags
 tftpboot.img
 timeconst.h
@@ -190,6 +214,7 @@ vmlinux
 vmlinux-*
 vmlinux.aout
 vmlinux.lds
+voffset.h
 vsyscall.lds
 vsyscall_32.lds
 wanxlfw.inc
@@ -200,3 +225,4 @@ wakeup.elf
 wakeup.lds
 zImage*
 zconf.hash.c
+zoffset.h

Documentation/driver-model/interface.txt

@@ -1,129 +0,0 @@
-
-Device Interfaces
-
-Introduction
-~~~~~~~~~~~~
-
-Device interfaces are the logical interfaces of device classes that correlate
-directly to userspace interfaces, like device nodes. 
-   
-Each device class may have multiple interfaces through which you can 
-access the same device. An input device may support the mouse interface, 
-the 'evdev' interface, and the touchscreen interface. A SCSI disk would 
-support the disk interface, the SCSI generic interface, and possibly a raw 
-device interface. 
-
-Device interfaces are registered with the class they belong to. As devices
-are added to the class, they are added to each interface registered with
-the class. The interface is responsible for determining whether the device
-supports the interface or not. 
-
-
-Programming Interface
-~~~~~~~~~~~~~~~~~~~~~
-
-struct device_interface {
-	char			* name;
-	rwlock_t		lock;
-	u32			devnum;
-	struct device_class	* devclass;
-
-	struct list_head	node;
-	struct driver_dir_entry	dir;
-
-	int (*add_device)(struct device *);
-	int (*add_device)(struct intf_data *);
-};
-
-int interface_register(struct device_interface *);
-void interface_unregister(struct device_interface *);
-
-
-An interface must specify the device class it belongs to. It is added
-to that class's list of interfaces on registration.
-
-
-Interfaces can be added to a device class at any time. Whenever it is
-added, each device in the class is passed to the interface's
-add_device callback. When an interface is removed, each device is
-removed from the interface.
-
-
-Devices
-~~~~~~~
-Once a device is added to a device class, it is added to each
-interface that is registered with the device class. The class
-is expected to place a class-specific data structure in 
-struct device::class_data. The interface can use that (along with
-other fields of struct device) to determine whether or not the driver
-and/or device support that particular interface.
-
-
-Data
-~~~~
-
-struct intf_data {
-	struct list_head	node;
-	struct device_interface	* intf;
-	struct device 		* dev;
-	u32			intf_num;
-};
-
-int interface_add_data(struct interface_data *);
-
-The interface is responsible for allocating and initializing a struct 
-intf_data and calling interface_add_data() to add it to the device's list
-of interfaces it belongs to. This list will be iterated over when the device
-is removed from the class (instead of all possible interfaces for a class).
-This structure should probably be embedded in whatever per-device data 
-structure the interface is allocating anyway.
-   
-Devices are enumerated within the interface. This happens in interface_add_data()
-and the enumerated value is stored in the struct intf_data for that device. 
-
-sysfs
-~~~~~
-Each interface is given a directory in the directory of the device
-class it belongs to:
-
-Interfaces get a directory in the class's directory as well:
-
-   class/
-   `-- input
-       |-- devices
-       |-- drivers
-       |-- mouse
-       `-- evdev
-
-When a device is added to the interface, a symlink is created that points 
-to the device's directory in the physical hierarchy:
-
-   class/
-   `-- input
-       |-- devices
-       |   `-- 1 -> ../../../root/pci0/00:1f.0/usb_bus/00:1f.2-1:0/
-       |-- drivers
-       |   `-- usb:usb_mouse -> ../../../bus/drivers/usb_mouse/
-       |-- mouse
-       |   `-- 1 -> ../../../root/pci0/00:1f.0/usb_bus/00:1f.2-1:0/
-       `-- evdev
-           `-- 1 -> ../../../root/pci0/00:1f.0/usb_bus/00:1f.2-1:0/
-
-
-Future Plans
-~~~~~~~~~~~~
-A device interface is correlated directly with a userspace interface
-for a device, specifically a device node. For instance, a SCSI disk
-exposes at least two interfaces to userspace: the standard SCSI disk
-interface and the SCSI generic interface. It might also export a raw
-device interface. 
-
-Many interfaces have a major number associated with them and each
-device gets a minor number. Or, multiple interfaces might share one
-major number, and each will receive a range of minor numbers (like in
-the case of input devices).
-
-These major and minor numbers could be stored in the interface
-structure. Major and minor allocations could happen when the interface
-is registered with the class, or via a helper function. 
-

Documentation/dvb/lmedm04.txt

@@ -46,7 +46,7 @@ and run
 Other LG firmware can be extracted manually from US280D.sys
 only found in windows/system32/driver.
 
-dd if=US280D.sys ibs=1 skip=42616 count=3668 of=dvb-usb-lme2510-lg.fw
+dd if=US280D.sys ibs=1 skip=42360 count=3924 of=dvb-usb-lme2510-lg.fw
 
 for DM04 LME2510C (LG Tuner)
 ---------------------------

Documentation/edac.txt

@@ -196,7 +196,7 @@ csrow3.
 The representation of the above is reflected in the directory tree
 in EDAC's sysfs interface. Starting in directory
 /sys/devices/system/edac/mc each memory controller will be represented
-by its own 'mcX' directory, where 'X" is the index of the MC.
+by its own 'mcX' directory, where 'X' is the index of the MC.
 
 
 	..../edac/mc/
@@ -207,7 +207,7 @@ by its own 'mcX' directory, where 'X" is the index of the MC.
 		   ....
 
 Under each 'mcX' directory each 'csrowX' is again represented by a
-'csrowX', where 'X" is the csrow index:
+'csrowX', where 'X' is the csrow index:
 
 
 	.../mc/mc0/
@@ -232,7 +232,7 @@ EDAC control and attribute files.
 
 
 In 'mcX' directories are EDAC control and attribute files for
-this 'X" instance of the memory controllers:
+this 'X' instance of the memory controllers:
 
 
 Counter reset control file:
@@ -343,7 +343,7 @@ Sdram memory scrubbing rate:
 'csrowX' DIRECTORIES
 
 In the 'csrowX' directories are EDAC control and attribute files for
-this 'X" instance of csrow:
+this 'X' instance of csrow:
 
 
 Total Uncorrectable Errors count attribute file:

Documentation/fb/00-INDEX

@@ -4,33 +4,41 @@ please mail me.
 				    Geert Uytterhoeven <geert@linux-m68k.org>
 
 00-INDEX
-	- this file
+	- this file.
 arkfb.txt
 	- info on the fbdev driver for ARK Logic chips.
 aty128fb.txt
 	- info on the ATI Rage128 frame buffer driver.
 cirrusfb.txt
 	- info on the driver for Cirrus Logic chipsets.
+cmap_xfbdev.txt
+	- an introduction to fbdev's cmap structures.
 deferred_io.txt
 	- an introduction to deferred IO.
+efifb.txt
+	- info on the EFI platform driver for Intel based Apple computers.
+ep93xx-fb.txt
+	- info on the driver for EP93xx LCD controller.
 fbcon.txt
 	- intro to and usage guide for the framebuffer console (fbcon).
 framebuffer.txt
 	- introduction to frame buffer devices.
-imacfb.txt
-	- info on the generic EFI platform driver for Intel based Macs.
+gxfb.txt
+	- info on the framebuffer driver for AMD Geode GX2 based processors.
 intel810.txt
 	- documentation for the Intel 810/815 framebuffer driver.
 intelfb.txt
 	- docs for Intel 830M/845G/852GM/855GM/865G/915G/945G fb driver.
 internals.txt
 	- quick overview of frame buffer device internals.
+lxfb.txt
+	- info on the framebuffer driver for AMD Geode LX based processors.
 matroxfb.txt
 	- info on the Matrox framebuffer driver for Alpha, Intel and PPC.
+metronomefb.txt
+	- info on the driver for the Metronome display controller.
 modedb.txt
 	- info on the video mode database.
-matroxfb.txt
-	- info on the Matrox frame buffer driver.
 pvr2fb.txt
 	- info on the PowerVR 2 frame buffer driver.
 pxafb.txt
@@ -39,13 +47,23 @@ s3fb.txt
 	- info on the fbdev driver for S3 Trio/Virge chips.
 sa1100fb.txt
 	- information about the driver for the SA-1100 LCD controller.
+sh7760fb.txt
+	- info on the SH7760/SH7763 integrated LCDC Framebuffer driver.
 sisfb.txt
 	- info on the framebuffer device driver for various SiS chips.
 sstfb.txt
 	- info on the frame buffer driver for 3dfx' Voodoo Graphics boards.
 tgafb.txt
-	- info on the TGA (DECChip 21030) frame buffer driver
+	- info on the TGA (DECChip 21030) frame buffer driver.
+tridentfb.txt
+	info on the framebuffer driver for some Trident chip based cards.
+uvesafb.txt
+	- info on the userspace VESA (VBE2+ compliant) frame buffer device.
 vesafb.txt
-	- info on the VESA frame buffer device
+	- info on the VESA frame buffer device.
+viafb.modes
+	- list of modes for VIA Integration Graphic Chip.
+viafb.txt
+	- info on the VIA Integration Graphic Chip console framebuffer driver.
 vt8623fb.txt
 	- info on the fb driver for the graphics core in VIA VT8623 chipsets.

Documentation/feature-removal-schedule.txt

@@ -97,36 +97,38 @@ Who:	Pavel Machek <pavel@ucw.cz>
 
 ---------------------------
 
-What:	Video4Linux API 1 ioctls and from Video devices.
-When:	kernel 2.6.38
-Files:	include/linux/videodev.h
-Check:	include/linux/videodev.h
-Why:	V4L1 AP1 was replaced by V4L2 API during migration from 2.4 to 2.6
-	series. The old API have lots of drawbacks and don't provide enough
-	means to work with all video and audio standards. The newer API is
-	already available on the main drivers and should be used instead.
-	Newer drivers should use v4l_compat_translate_ioctl function to handle
-	old calls, replacing to newer ones.
-	Decoder iocts are using internally to allow video drivers to
-	communicate with video decoders. This should also be improved to allow
-	V4L2 calls being translated into compatible internal ioctls.
-	Compatibility ioctls will be provided, for a while, via 
-	v4l1-compat module. 
-Who:	Mauro Carvalho Chehab <mchehab@infradead.org>
-
----------------------------
-
 What:	Video4Linux obsolete drivers using V4L1 API
-When:	kernel 2.6.38
-Files:	drivers/staging/cpia/* drivers/staging/stradis/*
-Check:	drivers/staging/cpia/cpia.c drivers/staging/stradis/stradis.c
+When:	kernel 2.6.39
+Files:	drivers/staging/se401/* drivers/staging/usbvideo/*
+Check:	drivers/staging/se401/se401.c drivers/staging/usbvideo/usbvideo.c
 Why:	There are some drivers still using V4L1 API, despite all efforts we've done
 	to migrate. Those drivers are for obsolete hardware that the old maintainer
 	didn't care (or not have the hardware anymore), and that no other developer
 	could find any hardware to buy. They probably have no practical usage today,
 	and people with such old hardware could probably keep using an older version
-	of the kernel. Those drivers will be moved to staging on 2.6.37 and, if nobody
-	care enough to port and test them with V4L2 API, they'll be removed on 2.6.38.
+	of the kernel. Those drivers will be moved to staging on 2.6.38 and, if nobody
+	cares enough to port and test them with V4L2 API, they'll be removed on 2.6.39.
+Who:	Mauro Carvalho Chehab <mchehab@infradead.org>
+
+---------------------------
+
+What:	Video4Linux: Remove obsolete ioctl's
+When:	kernel 2.6.39
+Files:	include/media/videodev2.h
+Why:	Some ioctl's were defined wrong on 2.6.2 and 2.6.6, using the wrong
+	type of R/W arguments. They were fixed, but the old ioctl names are
+	still there, maintained to avoid breaking binary compatibility:
+	  #define VIDIOC_OVERLAY_OLD   	_IOWR('V', 14, int)
+	  #define VIDIOC_S_PARM_OLD	_IOW('V', 22, struct v4l2_streamparm)
+	  #define VIDIOC_S_CTRL_OLD	_IOW('V', 28, struct v4l2_control)
+	  #define VIDIOC_G_AUDIO_OLD	_IOWR('V', 33, struct v4l2_audio)
+	  #define VIDIOC_G_AUDOUT_OLD	_IOWR('V', 49, struct v4l2_audioout)
+	  #define VIDIOC_CROPCAP_OLD	_IOR('V', 58, struct v4l2_cropcap)
+	There's no sense on preserving those forever, as it is very doubtful
+	that someone would try to use a such old binary with a modern kernel.
+	Removing them will allow us to remove some magic done at the V4L ioctl
+	handler.
+
 Who:	Mauro Carvalho Chehab <mchehab@infradead.org>
 
 ---------------------------
@@ -554,3 +556,23 @@ Why:    This is a legacy interface which have been replaced by a more
 Who:    NeilBrown <neilb@suse.de>
 
 ----------------------------
+
+What:	i2c_adapter.id
+When:	June 2011
+Why:	This field is deprecated. I2C device drivers shouldn't change their
+	behavior based on the underlying I2C adapter. Instead, the I2C
+	adapter driver should instantiate the I2C devices and provide the
+	needed platform-specific information.
+Who:	Jean Delvare <khali@linux-fr.org>
+
+----------------------------
+
+What:	cancel_rearming_delayed_work[queue]()
+When:	2.6.39
+
+Why:	The functions have been superceded by cancel_delayed_work_sync()
+	quite some time ago.  The conversion is trivial and there is no
+	in-kernel user left.
+Who:	Tejun Heo <tj@kernel.org>
+
+----------------------------

Documentation/filesystems/Locking

@@ -9,23 +9,25 @@ be able to use diff(1).
 
 --------------------------- dentry_operations --------------------------
 prototypes:
-	int (*d_revalidate)(struct dentry *, int);
-	int (*d_hash) (struct dentry *, struct qstr *);
-	int (*d_compare) (struct dentry *, struct qstr *, struct qstr *);
+	int (*d_revalidate)(struct dentry *, struct nameidata *);
+	int (*d_hash)(const struct dentry *, const struct inode *,
+			struct qstr *);
+	int (*d_compare)(const struct dentry *, const struct inode *,
+			const struct dentry *, const struct inode *,
+			unsigned int, const char *, const struct qstr *);
 	int (*d_delete)(struct dentry *);
 	void (*d_release)(struct dentry *);
 	void (*d_iput)(struct dentry *, struct inode *);
 	char *(*d_dname)((struct dentry *dentry, char *buffer, int buflen);
 
 locking rules:
-	none have BKL
-		dcache_lock	rename_lock	->d_lock	may block
-d_revalidate:	no		no		no		yes
-d_hash		no		no		no		yes
-d_compare:	no		yes		no		no 
-d_delete:	yes		no		yes		no
-d_release:	no		no		no		yes
-d_iput:		no		no		no		yes
+		rename_lock	->d_lock	may block	rcu-walk
+d_revalidate:	no		no		yes (ref-walk)	maybe
+d_hash		no		no		no		maybe
+d_compare:	yes		no		no		maybe
+d_delete:	no		yes		no		no
+d_release:	no		no		yes		no
+d_iput:		no		no		yes		no
 d_dname:	no		no		no		no
 
 --------------------------- inode_operations --------------------------- 
@@ -42,18 +44,23 @@ ata *);
 	int (*rename) (struct inode *, struct dentry *,
 			struct inode *, struct dentry *);
 	int (*readlink) (struct dentry *, char __user *,int);
-	int (*follow_link) (struct dentry *, struct nameidata *);
+	void * (*follow_link) (struct dentry *, struct nameidata *);
+	void (*put_link) (struct dentry *, struct nameidata *, void *);
 	void (*truncate) (struct inode *);
-	int (*permission) (struct inode *, int, struct nameidata *);
+	int (*permission) (struct inode *, int, unsigned int);
+	int (*check_acl)(struct inode *, int, unsigned int);
 	int (*setattr) (struct dentry *, struct iattr *);
 	int (*getattr) (struct vfsmount *, struct dentry *, struct kstat *);
 	int (*setxattr) (struct dentry *, const char *,const void *,size_t,int);
 	ssize_t (*getxattr) (struct dentry *, const char *, void *, size_t);
 	ssize_t (*listxattr) (struct dentry *, char *, size_t);
 	int (*removexattr) (struct dentry *, const char *);
+	void (*truncate_range)(struct inode *, loff_t, loff_t);
+	long (*fallocate)(struct inode *inode, int mode, loff_t offset, loff_t len);
+	int (*fiemap)(struct inode *, struct fiemap_extent_info *, u64 start, u64 len);
 
 locking rules:
-	all may block, none have BKL
+	all may block
 		i_mutex(inode)
 lookup:		yes
 create:		yes
@@ -66,19 +73,24 @@ rmdir:		yes (both)	(see below)
 rename:		yes (all)	(see below)
 readlink:	no
 follow_link:	no
+put_link:	no
 truncate:	yes		(see below)
 setattr:	yes
-permission:	no
+permission:	no (may not block if called in rcu-walk mode)
+check_acl:	no
 getattr:	no
 setxattr:	yes
 getxattr:	no
 listxattr:	no
 removexattr:	yes
+truncate_range:	yes
+fallocate:	no
+fiemap:		no
 	Additionally, ->rmdir(), ->unlink() and ->rename() have ->i_mutex on
 victim.
 	cross-directory ->rename() has (per-superblock) ->s_vfs_rename_sem.
 	->truncate() is never called directly - it's a callback, not a
-method. It's called by vmtruncate() - library function normally used by
+method. It's called by vmtruncate() - deprecated library function used by
 ->setattr(). Locking information above applies to that call (i.e. is
 inherited from ->setattr() - vmtruncate() is used when ATTR_SIZE had been
 passed).
@@ -91,7 +103,7 @@ prototypes:
 	struct inode *(*alloc_inode)(struct super_block *sb);
 	void (*destroy_inode)(struct inode *);
 	void (*dirty_inode) (struct inode *);
-	int (*write_inode) (struct inode *, int);
+	int (*write_inode) (struct inode *, struct writeback_control *wbc);
 	int (*drop_inode) (struct inode *);
 	void (*evict_inode) (struct inode *);
 	void (*put_super) (struct super_block *);
@@ -105,10 +117,10 @@ prototypes:
 	int (*show_options)(struct seq_file *, struct vfsmount *);
 	ssize_t (*quota_read)(struct super_block *, int, char *, size_t, loff_t);
 	ssize_t (*quota_write)(struct super_block *, int, const char *, size_t, loff_t);
+	int (*bdev_try_to_free_page)(struct super_block*, struct page*, gfp_t);
 
 locking rules:
 	All may block [not true, see below]
-	None have BKL
 			s_umount
 alloc_inode:
 destroy_inode:
@@ -127,6 +139,7 @@ umount_begin:		no
 show_options:		no		(namespace_sem)
 quota_read:		no		(see below)
 quota_write:		no		(see below)
+bdev_try_to_free_page:	no		(see below)
 
 ->statfs() has s_umount (shared) when called by ustat(2) (native or
 compat), but that's an accident of bad API; s_umount is used to pin
@@ -139,19 +152,25 @@ be the only ones operating on the quota file by the quota code (via
 dqio_sem) (unless an admin really wants to screw up something and
 writes to quota files with quotas on). For other details about locking
 see also dquot_operations section.
+->bdev_try_to_free_page is called from the ->releasepage handler of
+the block device inode.  See there for more details.
 
 --------------------------- file_system_type ---------------------------
 prototypes:
 	int (*get_sb) (struct file_system_type *, int,
 		       const char *, void *, struct vfsmount *);
+	struct dentry *(*mount) (struct file_system_type *, int,
+		       const char *, void *);
 	void (*kill_sb) (struct super_block *);
 locking rules:
-		may block	BKL
-get_sb		yes		no
-kill_sb		yes		no
+		may block
+get_sb		yes
+mount		yes
+kill_sb		yes
 
 ->get_sb() returns error or 0 with locked superblock attached to the vfsmount
 (exclusive on ->s_umount).
+->mount() returns ERR_PTR or the root dentry.
 ->kill_sb() takes a write-locked superblock, does all shutdown work on it,
 unlocks and drops the reference.
 
@@ -173,28 +192,38 @@ prototypes:
 	sector_t (*bmap)(struct address_space *, sector_t);
 	int (*invalidatepage) (struct page *, unsigned long);
 	int (*releasepage) (struct page *, int);
+	void (*freepage)(struct page *);
 	int (*direct_IO)(int, struct kiocb *, const struct iovec *iov,
 			loff_t offset, unsigned long nr_segs);
-	int (*launder_page) (struct page *);
+	int (*get_xip_mem)(struct address_space *, pgoff_t, int, void **,
+				unsigned long *);
+	int (*migratepage)(struct address_space *, struct page *, struct page *);
+	int (*launder_page)(struct page *);
+	int (*is_partially_uptodate)(struct page *, read_descriptor_t *, unsigned long);
+	int (*error_remove_page)(struct address_space *, struct page *);
 
 locking rules:
-	All except set_page_dirty may block
-
-			BKL	PageLocked(page)	i_mutex
-writepage:		no	yes, unlocks (see below)
-readpage:		no	yes, unlocks
-sync_page:		no	maybe
-writepages:		no
-set_page_dirty		no	no
-readpages:		no
-write_begin:		no	locks the page		yes
-write_end:		no	yes, unlocks		yes
-perform_write:		no	n/a			yes
-bmap:			no
-invalidatepage:		no	yes
-releasepage:		no	yes
-direct_IO:		no
-launder_page:		no	yes
+	All except set_page_dirty and freepage may block
+
+			PageLocked(page)	i_mutex
+writepage:		yes, unlocks (see below)
+readpage:		yes, unlocks
+sync_page:		maybe
+writepages:
+set_page_dirty		no
+readpages:
+write_begin:		locks the page		yes
+write_end:		yes, unlocks		yes
+bmap:
+invalidatepage:		yes
+releasepage:		yes
+freepage:		yes
+direct_IO:
+get_xip_mem:					maybe
+migratepage:		yes (both)
+launder_page:		yes
+is_partially_uptodate:	yes
+error_remove_page:	yes
 
 	->write_begin(), ->write_end(), ->sync_page() and ->readpage()
 may be called from the request handler (/dev/loop).
@@ -274,9 +303,8 @@ under spinlock (it cannot block) and is sometimes called with the page
 not locked.
 
 	->bmap() is currently used by legacy ioctl() (FIBMAP) provided by some
-filesystems and by the swapper. The latter will eventually go away. All
-instances do not actually need the BKL. Please, keep it that way and don't
-breed new callers.
+filesystems and by the swapper. The latter will eventually go away.  Please,
+keep it that way and don't breed new callers.
 
 	->invalidatepage() is called when the filesystem must attempt to drop
 some or all of the buffers from the page when it is being truncated.  It
@@ -288,53 +316,46 @@ buffers from the page in preparation for freeing it.  It returns zero to
 indicate that the buffers are (or may be) freeable.  If ->releasepage is zero,
 the kernel assumes that the fs has no private interest in the buffers.
 
+	->freepage() is called when the kernel is done dropping the page
+from the page cache.
+
 	->launder_page() may be called prior to releasing a page if
 it is still found to be dirty. It returns zero if the page was successfully
 cleaned, or an error value if not. Note that in order to prevent the page
 getting mapped back in and redirtied, it needs to be kept locked
 across the entire operation.
 
-	Note: currently almost all instances of address_space methods are
-using BKL for internal serialization and that's one of the worst sources
-of contention. Normally they are calling library functions (in fs/buffer.c)
-and pass foo_get_block() as a callback (on local block-based filesystems,
-indeed). BKL is not needed for library stuff and is usually taken by
-foo_get_block(). It's an overkill, since block bitmaps can be protected by
-internal fs locking and real critical areas are much smaller than the areas
-filesystems protect now.
-
 ----------------------- file_lock_operations ------------------------------
 prototypes:
-	void (*fl_insert)(struct file_lock *);	/* lock insertion callback */
-	void (*fl_remove)(struct file_lock *);	/* lock removal callback */
 	void (*fl_copy_lock)(struct file_lock *, struct file_lock *);
 	void (*fl_release_private)(struct file_lock *);
 
 
 locking rules:
-			BKL	may block
-fl_insert:		yes	no
-fl_remove:		yes	no
-fl_copy_lock:		yes	no
-fl_release_private:	yes	yes
+			file_lock_lock	may block
+fl_copy_lock:		yes		no
+fl_release_private:	maybe		no
 
 ----------------------- lock_manager_operations ---------------------------
 prototypes:
 	int (*fl_compare_owner)(struct file_lock *, struct file_lock *);
 	void (*fl_notify)(struct file_lock *);  /* unblock callback */
+	int (*fl_grant)(struct file_lock *, struct file_lock *, int);
 	void (*fl_release_private)(struct file_lock *);
 	void (*fl_break)(struct file_lock *); /* break_lease callback */
+	int (*fl_mylease)(struct file_lock *, struct file_lock *);
+	int (*fl_change)(struct file_lock **, int);
 
 locking rules:
-			BKL	may block
-fl_compare_owner:	yes	no
-fl_notify:		yes	no
-fl_release_private:	yes	yes
-fl_break:		yes	no
-
-	Currently only NFSD and NLM provide instances of this class. None of the
-them block. If you have out-of-tree instances - please, show up. Locking
-in that area will change.
+			file_lock_lock	may block
+fl_compare_owner:	yes		no
+fl_notify:		yes		no
+fl_grant:		no		no
+fl_release_private:	maybe		no
+fl_break:		yes		no
+fl_mylease:		yes		no
+fl_change		yes		no
+
 --------------------------- buffer_head -----------------------------------
 prototypes:
 	void (*b_end_io)(struct buffer_head *bh, int uptodate);
@@ -359,17 +380,17 @@ prototypes:
 	void (*swap_slot_free_notify) (struct block_device *, unsigned long);
 
 locking rules:
-			BKL	bd_mutex
-open:			no	yes
-release:		no	yes
-ioctl:			no	no
-compat_ioctl:		no	no
-direct_access:		no	no
-media_changed:		no	no
-unlock_native_capacity:	no	no
-revalidate_disk:	no	no
-getgeo:			no	no
-swap_slot_free_notify:	no	no	(see below)
+			bd_mutex
+open:			yes
+release:		yes
+ioctl:			no
+compat_ioctl:		no
+direct_access:		no
+media_changed:		no
+unlock_native_capacity:	no
+revalidate_disk:	no
+getgeo:			no
+swap_slot_free_notify:	no	(see below)
 
 media_changed, unlock_native_capacity and revalidate_disk are called only from
 check_disk_change().
@@ -408,34 +429,21 @@ prototypes:
 	unsigned long (*get_unmapped_area)(struct file *, unsigned long,
 			unsigned long, unsigned long, unsigned long);
 	int (*check_flags)(int);
+	int (*flock) (struct file *, int, struct file_lock *);
+	ssize_t (*splice_write)(struct pipe_inode_info *, struct file *, loff_t *,
+			size_t, unsigned int);
+	ssize_t (*splice_read)(struct file *, loff_t *, struct pipe_inode_info *,
+			size_t, unsigned int);
+	int (*setlease)(struct file *, long, struct file_lock **);
 };
 
 locking rules:
-	All may block.
-			BKL
-llseek:			no	(see below)
-read:			no
-aio_read:		no
-write:			no
-aio_write:		no
-readdir: 		no
-poll:			no
-unlocked_ioctl:		no
-compat_ioctl:		no
-mmap:			no
-open:			no
-flush:			no
-release:		no
-fsync:			no	(see below)
-aio_fsync:		no
-fasync:			no
-lock:			yes
-readv:			no
-writev:			no
-sendfile:		no
-sendpage:		no
-get_unmapped_area:	no
-check_flags:		no
+	All may block except for ->setlease.
+	No VFS locks held on entry except for ->fsync and ->setlease.
+
+->fsync() has i_mutex on inode.
+
+->setlease has the file_list_lock held and must not sleep.
 
 ->llseek() locking has moved from llseek to the individual llseek
 implementations.  If your fs is not using generic_file_llseek, you
@@ -445,17 +453,10 @@ mutex or just to use i_size_read() instead.
 Note: this does not protect the file->f_pos against concurrent modifications
 since this is something the userspace has to take care about.
 
-Note: ext2_release() was *the* source of contention on fs-intensive
-loads and dropping BKL on ->release() helps to get rid of that (we still
-grab BKL for cases when we close a file that had been opened r/w, but that
-can and should be done using the internal locking with smaller critical areas).
-Current worst offender is ext2_get_block()...
-
-->fasync() is called without BKL protection, and is responsible for
-maintaining the FASYNC bit in filp->f_flags.  Most instances call
-fasync_helper(), which does that maintenance, so it's not normally
-something one needs to worry about.  Return values > 0 will be mapped to
-zero in the VFS layer.
+->fasync() is responsible for maintaining the FASYNC bit in filp->f_flags.
+Most instances call fasync_helper(), which does that maintenance, so it's
+not normally something one needs to worry about.  Return values > 0 will be
+mapped to zero in the VFS layer.
 
 ->readdir() and ->ioctl() on directories must be changed. Ideally we would
 move ->readdir() to inode_operations and use a separate method for directory
@@ -466,8 +467,6 @@ components. And there are other reasons why the current interface is a mess...
 ->read on directories probably must go away - we should just enforce -EISDIR
 in sys_read() and friends.
 
-->fsync() has i_mutex on inode.
-
 --------------------------- dquot_operations -------------------------------
 prototypes:
 	int (*write_dquot) (struct dquot *);
@@ -502,12 +501,12 @@ prototypes:
 	int (*access)(struct vm_area_struct *, unsigned long, void*, int, int);
 
 locking rules:
-		BKL	mmap_sem	PageLocked(page)
-open:		no	yes
-close:		no	yes
-fault:		no	yes		can return with page locked
-page_mkwrite:	no	yes		can return with page locked
-access:		no	yes
+		mmap_sem	PageLocked(page)
+open:		yes
+close:		yes
+fault:		yes		can return with page locked
+page_mkwrite:	yes		can return with page locked
+access:		yes
 
 	->fault() is called when a previously not present pte is about
 to be faulted in. The filesystem must find and return the page associated
@@ -534,6 +533,3 @@ VM_IO | VM_PFNMAP VMAs.
 
 (if you break something or notice that it is broken and do not fix it yourself
 - at least put it here)
-
-ipc/shm.c::shm_delete() - may need BKL.
-->read() and ->write() in many drivers are (probably) missing BKL.

Documentation/filesystems/configfs/configfs_example_explicit.c

@@ -89,7 +89,7 @@ static ssize_t childless_storeme_write(struct childless *childless,
 	char *p = (char *) page;
 
 	tmp = simple_strtoul(p, &p, 10);
-	if (!p || (*p && (*p != '\n')))
+	if ((*p != '\0') && (*p != '\n'))
 		return -EINVAL;
 
 	if (tmp > INT_MAX)

Documentation/filesystems/dentry-locking.txt

@@ -1,174 +0,0 @@
-RCU-based dcache locking model
-==============================
-
-On many workloads, the most common operation on dcache is to look up a
-dentry, given a parent dentry and the name of the child. Typically,
-for every open(), stat() etc., the dentry corresponding to the
-pathname will be looked up by walking the tree starting with the first
-component of the pathname and using that dentry along with the next
-component to look up the next level and so on. Since it is a frequent
-operation for workloads like multiuser environments and web servers,
-it is important to optimize this path.
-
-Prior to 2.5.10, dcache_lock was acquired in d_lookup and thus in
-every component during path look-up. Since 2.5.10 onwards, fast-walk
-algorithm changed this by holding the dcache_lock at the beginning and
-walking as many cached path component dentries as possible. This
-significantly decreases the number of acquisition of
-dcache_lock. However it also increases the lock hold time
-significantly and affects performance in large SMP machines. Since
-2.5.62 kernel, dcache has been using a new locking model that uses RCU
-to make dcache look-up lock-free.
-
-The current dcache locking model is not very different from the
-existing dcache locking model. Prior to 2.5.62 kernel, dcache_lock
-protected the hash chain, d_child, d_alias, d_lru lists as well as
-d_inode and several other things like mount look-up. RCU-based changes
-affect only the way the hash chain is protected. For everything else
-the dcache_lock must be taken for both traversing as well as
-updating. The hash chain updates too take the dcache_lock.  The
-significant change is the way d_lookup traverses the hash chain, it
-doesn't acquire the dcache_lock for this and rely on RCU to ensure
-that the dentry has not been *freed*.
-
-
-Dcache locking details
-======================
-
-For many multi-user workloads, open() and stat() on files are very
-frequently occurring operations. Both involve walking of path names to
-find the dentry corresponding to the concerned file. In 2.4 kernel,
-dcache_lock was held during look-up of each path component. Contention
-and cache-line bouncing of this global lock caused significant
-scalability problems. With the introduction of RCU in Linux kernel,
-this was worked around by making the look-up of path components during
-path walking lock-free.
-
-
-Safe lock-free look-up of dcache hash table
-===========================================
-
-Dcache is a complex data structure with the hash table entries also
-linked together in other lists. In 2.4 kernel, dcache_lock protected
-all the lists. We applied RCU only on hash chain walking. The rest of
-the lists are still protected by dcache_lock.  Some of the important
-changes are :
-
-1. The deletion from hash chain is done using hlist_del_rcu() macro
-   which doesn't initialize next pointer of the deleted dentry and
-   this allows us to walk safely lock-free while a deletion is
-   happening.
-
-2. Insertion of a dentry into the hash table is done using
-   hlist_add_head_rcu() which take care of ordering the writes - the
-   writes to the dentry must be visible before the dentry is
-   inserted. This works in conjunction with hlist_for_each_rcu(),
-   which has since been replaced by hlist_for_each_entry_rcu(), while
-   walking the hash chain. The only requirement is that all
-   initialization to the dentry must be done before
-   hlist_add_head_rcu() since we don't have dcache_lock protection
-   while traversing the hash chain. This isn't different from the
-   existing code.
-
-3. The dentry looked up without holding dcache_lock by cannot be
-   returned for walking if it is unhashed. It then may have a NULL
-   d_inode or other bogosity since RCU doesn't protect the other
-   fields in the dentry. We therefore use a flag DCACHE_UNHASHED to
-   indicate unhashed dentries and use this in conjunction with a
-   per-dentry lock (d_lock). Once looked up without the dcache_lock,
-   we acquire the per-dentry lock (d_lock) and check if the dentry is
-   unhashed. If so, the look-up is failed. If not, the reference count
-   of the dentry is increased and the dentry is returned.
-
-4. Once a dentry is looked up, it must be ensured during the path walk
-   for that component it doesn't go away. In pre-2.5.10 code, this was
-   done holding a reference to the dentry. dcache_rcu does the same.
-   In some sense, dcache_rcu path walking looks like the pre-2.5.10
-   version.
-
-5. All dentry hash chain updates must take the dcache_lock as well as
-   the per-dentry lock in that order. dput() does this to ensure that
-   a dentry that has just been looked up in another CPU doesn't get
-   deleted before dget() can be done on it.
-
-6. There are several ways to do reference counting of RCU protected
-   objects. One such example is in ipv4 route cache where deferred
-   freeing (using call_rcu()) is done as soon as the reference count
-   goes to zero. This cannot be done in the case of dentries because
-   tearing down of dentries require blocking (dentry_iput()) which
-   isn't supported from RCU callbacks. Instead, tearing down of
-   dentries happen synchronously in dput(), but actual freeing happens
-   later when RCU grace period is over. This allows safe lock-free
-   walking of the hash chains, but a matched dentry may have been
-   partially torn down. The checking of DCACHE_UNHASHED flag with
-   d_lock held detects such dentries and prevents them from being
-   returned from look-up.
-
-
-Maintaining POSIX rename semantics
-==================================
-
-Since look-up of dentries is lock-free, it can race against a
-concurrent rename operation. For example, during rename of file A to
-B, look-up of either A or B must succeed.  So, if look-up of B happens
-after A has been removed from the hash chain but not added to the new
-hash chain, it may fail.  Also, a comparison while the name is being
-written concurrently by a rename may result in false positive matches
-violating rename semantics.  Issues related to race with rename are
-handled as described below :
-
-1. Look-up can be done in two ways - d_lookup() which is safe from
-   simultaneous renames and __d_lookup() which is not.  If
-   __d_lookup() fails, it must be followed up by a d_lookup() to
-   correctly determine whether a dentry is in the hash table or
-   not. d_lookup() protects look-ups using a sequence lock
-   (rename_lock).
-
-2. The name associated with a dentry (d_name) may be changed if a
-   rename is allowed to happen simultaneously. To avoid memcmp() in
-   __d_lookup() go out of bounds due to a rename and false positive
-   comparison, the name comparison is done while holding the
-   per-dentry lock. This prevents concurrent renames during this
-   operation.
-
-3. Hash table walking during look-up may move to a different bucket as
-   the current dentry is moved to a different bucket due to rename.
-   But we use hlists in dcache hash table and they are
-   null-terminated.  So, even if a dentry moves to a different bucket,
-   hash chain walk will terminate. [with a list_head list, it may not
-   since termination is when the list_head in the original bucket is
-   reached].  Since we redo the d_parent check and compare name while
-   holding d_lock, lock-free look-up will not race against d_move().
-
-4. There can be a theoretical race when a dentry keeps coming back to
-   original bucket due to double moves. Due to this look-up may
-   consider that it has never moved and can end up in a infinite loop.
-   But this is not any worse that theoretical livelocks we already
-   have in the kernel.
-
-
-Important guidelines for filesystem developers related to dcache_rcu
-====================================================================
-
-1. Existing dcache interfaces (pre-2.5.62) exported to filesystem
-   don't change. Only dcache internal implementation changes. However
-   filesystems *must not* delete from the dentry hash chains directly
-   using the list macros like allowed earlier. They must use dcache
-   APIs like d_drop() or __d_drop() depending on the situation.
-
-2. d_flags is now protected by a per-dentry lock (d_lock). All access
-   to d_flags must be protected by it.
-
-3. For a hashed dentry, checking of d_count needs to be protected by
-   d_lock.
-
-
-Papers and other documentation on dcache locking
-================================================
-
-1. Scaling dcache with RCU (http://linuxjournal.com/article.php?sid=7124).
-
-2. http://lse.sourceforge.net/locking/dcache/dcache.html
-
-
-

Documentation/filesystems/path-lookup.txt

@@ -0,0 +1,382 @@
+Path walking and name lookup locking
+====================================
+
+Path resolution is the finding a dentry corresponding to a path name string, by
+performing a path walk. Typically, for every open(), stat() etc., the path name
+will be resolved. Paths are resolved by walking the namespace tree, starting
+with the first component of the pathname (eg. root or cwd) with a known dentry,
+then finding the child of that dentry, which is named the next component in the
+path string. Then repeating the lookup from the child dentry and finding its
+child with the next element, and so on.
+
+Since it is a frequent operation for workloads like multiuser environments and
+web servers, it is important to optimize this code.
+
+Path walking synchronisation history:
+Prior to 2.5.10, dcache_lock was acquired in d_lookup (dcache hash lookup) and
+thus in every component during path look-up. Since 2.5.10 onwards, fast-walk
+algorithm changed this by holding the dcache_lock at the beginning and walking
+as many cached path component dentries as possible. This significantly
+decreases the number of acquisition of dcache_lock. However it also increases
+the lock hold time significantly and affects performance in large SMP machines.
+Since 2.5.62 kernel, dcache has been using a new locking model that uses RCU to
+make dcache look-up lock-free.
+
+All the above algorithms required taking a lock and reference count on the
+dentry that was looked up, so that may be used as the basis for walking the
+next path element. This is inefficient and unscalable. It is inefficient
+because of the locks and atomic operations required for every dentry element
+slows things down. It is not scalable because many parallel applications that
+are path-walk intensive tend to do path lookups starting from a common dentry
+(usually, the root "/" or current working directory). So contention on these
+common path elements causes lock and cacheline queueing.
+
+Since 2.6.38, RCU is used to make a significant part of the entire path walk
+(including dcache look-up) completely "store-free" (so, no locks, atomics, or
+even stores into cachelines of common dentries). This is known as "rcu-walk"
+path walking.
+
+Path walking overview
+=====================
+
+A name string specifies a start (root directory, cwd, fd-relative) and a
+sequence of elements (directory entry names), which together refer to a path in
+the namespace. A path is represented as a (dentry, vfsmount) tuple. The name
+elements are sub-strings, seperated by '/'.
+
+Name lookups will want to find a particular path that a name string refers to
+(usually the final element, or parent of final element). This is done by taking
+the path given by the name's starting point (which we know in advance -- eg.
+current->fs->cwd or current->fs->root) as the first parent of the lookup. Then
+iteratively for each subsequent name element, look up the child of the current
+parent with the given name and if it is not the desired entry, make it the
+parent for the next lookup.
+
+A parent, of course, must be a directory, and we must have appropriate
+permissions on the parent inode to be able to walk into it.
+
+Turning the child into a parent for the next lookup requires more checks and
+procedures. Symlinks essentially substitute the symlink name for the target
+name in the name string, and require some recursive path walking.  Mount points
+must be followed into (thus changing the vfsmount that subsequent path elements
+refer to), switching from the mount point path to the root of the particular
+mounted vfsmount. These behaviours are variously modified depending on the
+exact path walking flags.
+
+Path walking then must, broadly, do several particular things:
+- find the start point of the walk;
+- perform permissions and validity checks on inodes;
+- perform dcache hash name lookups on (parent, name element) tuples;
+- traverse mount points;
+- traverse symlinks;
+- lookup and create missing parts of the path on demand.
+
+Safe store-free look-up of dcache hash table
+============================================
+
+Dcache name lookup
+------------------
+In order to lookup a dcache (parent, name) tuple, we take a hash on the tuple
+and use that to select a bucket in the dcache-hash table. The list of entries
+in that bucket is then walked, and we do a full comparison of each entry
+against our (parent, name) tuple.
+
+The hash lists are RCU protected, so list walking is not serialised with
+concurrent updates (insertion, deletion from the hash). This is a standard RCU
+list application with the exception of renames, which will be covered below.
+
+Parent and name members of a dentry, as well as its membership in the dcache
+hash, and its inode are protected by the per-dentry d_lock spinlock. A
+reference is taken on the dentry (while the fields are verified under d_lock),
+and this stabilises its d_inode pointer and actual inode. This gives a stable
+point to perform the next step of our path walk against.
+
+These members are also protected by d_seq seqlock, although this offers
+read-only protection and no durability of results, so care must be taken when
+using d_seq for synchronisation (see seqcount based lookups, below).
+
+Renames
+-------
+Back to the rename case. In usual RCU protected lists, the only operations that
+will happen to an object is insertion, and then eventually removal from the
+list. The object will not be reused until an RCU grace period is complete.
+This ensures the RCU list traversal primitives can run over the object without
+problems (see RCU documentation for how this works).
+
+However when a dentry is renamed, its hash value can change, requiring it to be
+moved to a new hash list. Allocating and inserting a new alias would be
+expensive and also problematic for directory dentries. Latency would be far to
+high to wait for a grace period after removing the dentry and before inserting
+it in the new hash bucket. So what is done is to insert the dentry into the
+new list immediately.
+
+However, when the dentry's list pointers are updated to point to objects in the
+new list before waiting for a grace period, this can result in a concurrent RCU
+lookup of the old list veering off into the new (incorrect) list and missing
+the remaining dentries on the list.
+
+There is no fundamental problem with walking down the wrong list, because the
+dentry comparisons will never match. However it is fatal to miss a matching
+dentry. So a seqlock is used to detect when a rename has occurred, and so the
+lookup can be retried.
+
+         1      2      3
+        +---+  +---+  +---+
+hlist-->| N-+->| N-+->| N-+->
+head <--+-P |<-+-P |<-+-P |
+        +---+  +---+  +---+
+
+Rename of dentry 2 may require it deleted from the above list, and inserted
+into a new list. Deleting 2 gives the following list.
+
+         1             3
+        +---+         +---+     (don't worry, the longer pointers do not
+hlist-->| N-+-------->| N-+->    impose a measurable performance overhead
+head <--+-P |<--------+-P |      on modern CPUs)
+        +---+         +---+
+          ^      2      ^
+          |    +---+    |
+          |    | N-+----+
+          +----+-P |
+               +---+
+
+This is a standard RCU-list deletion, which leaves the deleted object's
+pointers intact, so a concurrent list walker that is currently looking at
+object 2 will correctly continue to object 3 when it is time to traverse the
+next object.
+
+However, when inserting object 2 onto a new list, we end up with this:
+
+         1             3
+        +---+         +---+
+hlist-->| N-+-------->| N-+->
+head <--+-P |<--------+-P |
+        +---+         +---+
+                 2
+               +---+
+               | N-+---->
+          <----+-P |
+               +---+
+
+Because we didn't wait for a grace period, there may be a concurrent lookup
+still at 2. Now when it follows 2's 'next' pointer, it will walk off into
+another list without ever having checked object 3.
+
+A related, but distinctly different, issue is that of rename atomicity versus
+lookup operations. If a file is renamed from 'A' to 'B', a lookup must only
+find either 'A' or 'B'. So if a lookup of 'A' returns NULL, a subsequent lookup
+of 'B' must succeed (note the reverse is not true).
+
+Between deleting the dentry from the old hash list, and inserting it on the new
+hash list, a lookup may find neither 'A' nor 'B' matching the dentry. The same
+rename seqlock is also used to cover this race in much the same way, by
+retrying a negative lookup result if a rename was in progress.
+
+Seqcount based lookups
+----------------------
+In refcount based dcache lookups, d_lock is used to serialise access to
+the dentry, stabilising it while comparing its name and parent and then
+taking a reference count (the reference count then gives a stable place to
+start the next part of the path walk from).
+
+As explained above, we would like to do path walking without taking locks or
+reference counts on intermediate dentries along the path. To do this, a per
+dentry seqlock (d_seq) is used to take a "coherent snapshot" of what the dentry
+looks like (its name, parent, and inode). That snapshot is then used to start
+the next part of the path walk. When loading the coherent snapshot under d_seq,
+care must be taken to load the members up-front, and use those pointers rather
+than reloading from the dentry later on (otherwise we'd have interesting things
+like d_inode going NULL underneath us, if the name was unlinked).
+
+Also important is to avoid performing any destructive operations (pretty much:
+no non-atomic stores to shared data), and to recheck the seqcount when we are
+"done" with the operation. Retry or abort if the seqcount does not match.
+Avoiding destructive or changing operations means we can easily unwind from
+failure.
+
+What this means is that a caller, provided they are holding RCU lock to
+protect the dentry object from disappearing, can perform a seqcount based
+lookup which does not increment the refcount on the dentry or write to
+it in any way. This returned dentry can be used for subsequent operations,
+provided that d_seq is rechecked after that operation is complete.
+
+Inodes are also rcu freed, so the seqcount lookup dentry's inode may also be
+queried for permissions.
+
+With this two parts of the puzzle, we can do path lookups without taking
+locks or refcounts on dentry elements.
+
+RCU-walk path walking design
+============================
+
+Path walking code now has two distinct modes, ref-walk and rcu-walk. ref-walk
+is the traditional[*] way of performing dcache lookups using d_lock to
+serialise concurrent modifications to the dentry and take a reference count on
+it. ref-walk is simple and obvious, and may sleep, take locks, etc while path
+walking is operating on each dentry. rcu-walk uses seqcount based dentry
+lookups, and can perform lookup of intermediate elements without any stores to
+shared data in the dentry or inode. rcu-walk can not be applied to all cases,
+eg. if the filesystem must sleep or perform non trivial operations, rcu-walk
+must be switched to ref-walk mode.
+
+[*] RCU is still used for the dentry hash lookup in ref-walk, but not the full
+    path walk.
+
+Where ref-walk uses a stable, refcounted ``parent'' to walk the remaining
+path string, rcu-walk uses a d_seq protected snapshot. When looking up a
+child of this parent snapshot, we open d_seq critical section on the child
+before closing d_seq critical section on the parent. This gives an interlocking
+ladder of snapshots to walk down.
+
+
+     proc 101
+      /----------------\
+     / comm:    "vi"    \
+    /  fs.root: dentry0  \
+    \  fs.cwd:  dentry2  /
+     \                  /
+      \----------------/
+
+So when vi wants to open("/home/npiggin/test.c", O_RDWR), then it will
+start from current->fs->root, which is a pinned dentry. Alternatively,
+"./test.c" would start from cwd; both names refer to the same path in
+the context of proc101.
+
+     dentry 0
+    +---------------------+   rcu-walk begins here, we note d_seq, check the
+    | name:    "/"        |   inode's permission, and then look up the next
+    | inode:   10         |   path element which is "home"...
+    | children:"home", ...|
+    +---------------------+
+              |
+     dentry 1 V
+    +---------------------+   ... which brings us here. We find dentry1 via
+    | name:    "home"     |   hash lookup, then note d_seq and compare name
+    | inode:   678        |   string and parent pointer. When we have a match,
+    | children:"npiggin"  |   we now recheck the d_seq of dentry0. Then we
+    +---------------------+   check inode and look up the next element.
+              |
+     dentry2  V
+    +---------------------+   Note: if dentry0 is now modified, lookup is
+    | name:    "npiggin"  |   not necessarily invalid, so we need only keep a
+    | inode:   543        |   parent for d_seq verification, and grandparents
+    | children:"a.c", ... |   can be forgotten.
+    +---------------------+
+              |
+     dentry3  V
+    +---------------------+   At this point we have our destination dentry.
+    | name:    "a.c"      |   We now take its d_lock, verify d_seq of this
+    | inode:   14221      |   dentry. If that checks out, we can increment
+    | children:NULL       |   its refcount because we're holding d_lock.
+    +---------------------+
+
+Taking a refcount on a dentry from rcu-walk mode, by taking its d_lock,
+re-checking its d_seq, and then incrementing its refcount is called
+"dropping rcu" or dropping from rcu-walk into ref-walk mode.
+
+It is, in some sense, a bit of a house of cards. If the seqcount check of the
+parent snapshot fails, the house comes down, because we had closed the d_seq
+section on the grandparent, so we have nothing left to stand on. In that case,
+the path walk must be fully restarted (which we do in ref-walk mode, to avoid
+live locks). It is costly to have a full restart, but fortunately they are
+quite rare.
+
+When we reach a point where sleeping is required, or a filesystem callout
+requires ref-walk, then instead of restarting the walk, we attempt to drop rcu
+at the last known good dentry we have. Avoiding a full restart in ref-walk in
+these cases is fundamental for performance and scalability because blocking
+operations such as creates and unlinks are not uncommon.
+
+The detailed design for rcu-walk is like this:
+* LOOKUP_RCU is set in nd->flags, which distinguishes rcu-walk from ref-walk.
+* Take the RCU lock for the entire path walk, starting with the acquiring
+  of the starting path (eg. root/cwd/fd-path). So now dentry refcounts are
+  not required for dentry persistence.
+* synchronize_rcu is called when unregistering a filesystem, so we can
+  access d_ops and i_ops during rcu-walk.
+* Similarly take the vfsmount lock for the entire path walk. So now mnt
+  refcounts are not required for persistence. Also we are free to perform mount
+  lookups, and to assume dentry mount points and mount roots are stable up and
+  down the path.
+* Have a per-dentry seqlock to protect the dentry name, parent, and inode,
+  so we can load this tuple atomically, and also check whether any of its
+  members have changed.
+* Dentry lookups (based on parent, candidate string tuple) recheck the parent
+  sequence after the child is found in case anything changed in the parent
+  during the path walk.
+* inode is also RCU protected so we can load d_inode and use the inode for
+  limited things.
+* i_mode, i_uid, i_gid can be tested for exec permissions during path walk.
+* i_op can be loaded.
+* When the destination dentry is reached, drop rcu there (ie. take d_lock,
+  verify d_seq, increment refcount).
+* If seqlock verification fails anywhere along the path, do a full restart
+  of the path lookup in ref-walk mode. -ECHILD tends to be used (for want of
+  a better errno) to signal an rcu-walk failure.
+
+The cases where rcu-walk cannot continue are:
+* NULL dentry (ie. any uncached path element)
+* Following links
+
+It may be possible eventually to make following links rcu-walk aware.
+
+Uncached path elements will always require dropping to ref-walk mode, at the
+very least because i_mutex needs to be grabbed, and objects allocated.
+
+Final note:
+"store-free" path walking is not strictly store free. We take vfsmount lock
+and refcounts (both of which can be made per-cpu), and we also store to the
+stack (which is essentially CPU-local), and we also have to take locks and
+refcount on final dentry.
+
+The point is that shared data, where practically possible, is not locked
+or stored into. The result is massive improvements in performance and
+scalability of path resolution.
+
+
+Interesting statistics
+======================
+
+The following table gives rcu lookup statistics for a few simple workloads
+(2s12c24t Westmere, debian non-graphical system). Ungraceful are attempts to
+drop rcu that fail due to d_seq failure and requiring the entire path lookup
+again. Other cases are successful rcu-drops that are required before the final
+element, nodentry for missing dentry, revalidate for filesystem revalidate
+routine requiring rcu drop, permission for permission check requiring drop,
+and link for symlink traversal requiring drop.
+
+     rcu-lookups     restart  nodentry          link  revalidate  permission
+bootup     47121           0      4624          1010       10283        7852
+dbench  25386793           0   6778659(26.7%)     55         549        1156
+kbuild   2696672          10     64442(2.3%)  108764(4.0%)     1        1590
+git diff   39605           0        28             2           0         106
+vfstest 24185492        4945    708725(2.9%) 1076136(4.4%)     0        2651
+
+What this shows is that failed rcu-walk lookups, ie. ones that are restarted
+entirely with ref-walk, are quite rare. Even the "vfstest" case which
+specifically has concurrent renames/mkdir/rmdir/ creat/unlink/etc to excercise
+such races is not showing a huge amount of restarts.
+
+Dropping from rcu-walk to ref-walk mean that we have encountered a dentry where
+the reference count needs to be taken for some reason. This is either because
+we have reached the target of the path walk, or because we have encountered a
+condition that can't be resolved in rcu-walk mode.  Ideally, we drop rcu-walk
+only when we have reached the target dentry, so the other statistics show where
+this does not happen.
+
+Note that a graceful drop from rcu-walk mode due to something such as the
+dentry not existing (which can be common) is not necessarily a failure of
+rcu-walk scheme, because some elements of the path may have been walked in
+rcu-walk mode. The further we get from common path elements (such as cwd or
+root), the less contended the dentry is likely to be. The closer we are to
+common path elements, the more likely they will exist in dentry cache.
+
+
+Papers and other documentation on dcache locking
+================================================
+
+1. Scaling dcache with RCU (http://linuxjournal.com/article.php?sid=7124).
+
+2. http://lse.sourceforge.net/locking/dcache/dcache.html
+
+

Documentation/filesystems/porting

@@ -216,7 +216,6 @@ had ->revalidate()) add calls in ->follow_link()/->readlink().
 ->d_parent changes are not protected by BKL anymore.  Read access is safe
 if at least one of the following is true:
 	* filesystem has no cross-directory rename()
-	* dcache_lock is held
 	* we know that parent had been locked (e.g. we are looking at
 ->d_parent of ->lookup() argument).
 	* we are called from ->rename().
@@ -318,3 +317,71 @@ if it's zero is not *and* *never* *had* *been* enough.  Final unlink() and iput(
 may happen while the inode is in the middle of ->write_inode(); e.g. if you blindly
 free the on-disk inode, you may end up doing that while ->write_inode() is writing
 to it.
+
+---
+[mandatory]
+
+	.d_delete() now only advises the dcache as to whether or not to cache
+unreferenced dentries, and is now only called when the dentry refcount goes to
+0. Even on 0 refcount transition, it must be able to tolerate being called 0,
+1, or more times (eg. constant, idempotent).
+
+---
+[mandatory]
+
+	.d_compare() calling convention and locking rules are significantly
+changed. Read updated documentation in Documentation/filesystems/vfs.txt (and
+look at examples of other filesystems) for guidance.
+
+---
+[mandatory]
+
+	.d_hash() calling convention and locking rules are significantly
+changed. Read updated documentation in Documentation/filesystems/vfs.txt (and
+look at examples of other filesystems) for guidance.
+
+---
+[mandatory]
+	dcache_lock is gone, replaced by fine grained locks. See fs/dcache.c
+for details of what locks to replace dcache_lock with in order to protect
+particular things. Most of the time, a filesystem only needs ->d_lock, which
+protects *all* the dcache state of a given dentry.
+
+--
+[mandatory]
+
+	Filesystems must RCU-free their inodes, if they can have been accessed
+via rcu-walk path walk (basically, if the file can have had a path name in the
+vfs namespace).
+
+	i_dentry and i_rcu share storage in a union, and the vfs expects
+i_dentry to be reinitialized before it is freed, so an:
+
+  INIT_LIST_HEAD(&inode->i_dentry);
+
+must be done in the RCU callback.
+
+--
+[recommended]
+	vfs now tries to do path walking in "rcu-walk mode", which avoids
+atomic operations and scalability hazards on dentries and inodes (see
+Documentation/filesystems/path-walk.txt). d_hash and d_compare changes (above)
+are examples of the changes required to support this. For more complex
+filesystem callbacks, the vfs drops out of rcu-walk mode before the fs call, so
+no changes are required to the filesystem. However, this is costly and loses
+the benefits of rcu-walk mode. We will begin to add filesystem callbacks that
+are rcu-walk aware, shown below. Filesystems should take advantage of this
+where possible.
+
+--
+[mandatory]
+	d_revalidate is a callback that is made on every path element (if
+the filesystem provides it), which requires dropping out of rcu-walk mode. This
+may now be called in rcu-walk mode (nd->flags & LOOKUP_RCU). -ECHILD should be
+returned if the filesystem cannot handle rcu-walk. See
+Documentation/filesystems/vfs.txt for more details.
+
+	permission and check_acl are inode permission checks that are called
+on many or all directory inodes on the way down a path walk (to check for
+exec permission). These must now be rcu-walk aware (flags & IPERM_RCU). See
+Documentation/filesystems/vfs.txt for more details.

Documentation/filesystems/proc.txt

@@ -1181,6 +1181,30 @@ Table 1-12: Files in /proc/fs/ext4/<devname>
  mb_groups       details of multiblock allocator buddy cache of free blocks
 ..............................................................................
 
+2.0 /proc/consoles
+------------------
+Shows registered system console lines.
+
+To see which character device lines are currently used for the system console
+/dev/console, you may simply look into the file /proc/consoles:
+
+  > cat /proc/consoles
+  tty0                 -WU (ECp)       4:7
+  ttyS0                -W- (Ep)        4:64
+
+The columns are:
+
+  device               name of the device
+  operations           R = can do read operations
+                       W = can do write operations
+                       U = can do unblank
+  flags                E = it is enabled
+                       C = it is prefered console
+                       B = it is primary boot console
+                       p = it is used for printk buffer
+                       b = it is not a TTY but a Braille device
+                       a = it is safe to use when cpu is offline
+  major:minor          major and minor number of the device separated by a colon
 
 ------------------------------------------------------------------------------
 Summary

Documentation/filesystems/vfs.txt

@@ -325,7 +325,8 @@ struct inode_operations {
         void * (*follow_link) (struct dentry *, struct nameidata *);
         void (*put_link) (struct dentry *, struct nameidata *, void *);
 	void (*truncate) (struct inode *);
-	int (*permission) (struct inode *, int, struct nameidata *);
+	int (*permission) (struct inode *, int, unsigned int);
+	int (*check_acl)(struct inode *, int, unsigned int);
 	int (*setattr) (struct dentry *, struct iattr *);
 	int (*getattr) (struct vfsmount *mnt, struct dentry *, struct kstat *);
 	int (*setxattr) (struct dentry *, const char *,const void *,size_t,int);
@@ -414,6 +415,13 @@ otherwise noted.
   permission: called by the VFS to check for access rights on a POSIX-like
   	filesystem.
 
+	May be called in rcu-walk mode (flags & IPERM_RCU). If in rcu-walk
+	mode, the filesystem must check the permission without blocking or
+	storing to the inode.
+
+	If a situation is encountered that rcu-walk cannot handle, return
+	-ECHILD and it will be called again in ref-walk mode.
+
   setattr: called by the VFS to set attributes for a file. This method
   	is called by chmod(2) and related system calls.
 
@@ -534,6 +542,7 @@ struct address_space_operations {
 	sector_t (*bmap)(struct address_space *, sector_t);
 	int (*invalidatepage) (struct page *, unsigned long);
 	int (*releasepage) (struct page *, int);
+	void (*freepage)(struct page *);
 	ssize_t (*direct_IO)(int, struct kiocb *, const struct iovec *iov,
 			loff_t offset, unsigned long nr_segs);
 	struct page* (*get_xip_page)(struct address_space *, sector_t,
@@ -660,11 +669,10 @@ struct address_space_operations {
   releasepage: releasepage is called on PagePrivate pages to indicate
         that the page should be freed if possible.  ->releasepage
         should remove any private data from the page and clear the
-        PagePrivate flag.  It may also remove the page from the
-        address_space.  If this fails for some reason, it may indicate
-        failure with a 0 return value.
-	This is used in two distinct though related cases.  The first
-        is when the VM finds a clean page with no active users and
+        PagePrivate flag. If releasepage() fails for some reason, it must
+	indicate failure with a 0 return value.
+	releasepage() is used in two distinct though related cases.  The
+	first is when the VM finds a clean page with no active users and
         wants to make it a free page.  If ->releasepage succeeds, the
         page will be removed from the address_space and become free.
 
@@ -679,6 +687,12 @@ struct address_space_operations {
         need to ensure this.  Possibly it can clear the PageUptodate
         bit if it cannot free private data yet.
 
+  freepage: freepage is called once the page is no longer visible in
+        the page cache in order to allow the cleanup of any private
+	data. Since it may be called by the memory reclaimer, it
+	should not assume that the original address_space mapping still
+	exists, and it should not block.
+
   direct_IO: called by the generic read/write routines to perform
         direct_IO - that is IO requests which bypass the page cache
         and transfer data directly between the storage and the
@@ -841,9 +855,12 @@ defined:
 
 struct dentry_operations {
 	int (*d_revalidate)(struct dentry *, struct nameidata *);
-	int (*d_hash) (struct dentry *, struct qstr *);
-	int (*d_compare) (struct dentry *, struct qstr *, struct qstr *);
-	int (*d_delete)(struct dentry *);
+	int (*d_hash)(const struct dentry *, const struct inode *,
+			struct qstr *);
+	int (*d_compare)(const struct dentry *, const struct inode *,
+			const struct dentry *, const struct inode *,
+			unsigned int, const char *, const struct qstr *);
+	int (*d_delete)(const struct dentry *);
 	void (*d_release)(struct dentry *);
 	void (*d_iput)(struct dentry *, struct inode *);
 	char *(*d_dname)(struct dentry *, char *, int);
@@ -854,13 +871,45 @@ struct dentry_operations {
 	dcache. Most filesystems leave this as NULL, because all their
 	dentries in the dcache are valid
 
-  d_hash: called when the VFS adds a dentry to the hash table
+	d_revalidate may be called in rcu-walk mode (nd->flags & LOOKUP_RCU).
+	If in rcu-walk mode, the filesystem must revalidate the dentry without
+	blocking or storing to the dentry, d_parent and d_inode should not be
+	used without care (because they can go NULL), instead nd->inode should
+	be used.
+
+	If a situation is encountered that rcu-walk cannot handle, return
+	-ECHILD and it will be called again in ref-walk mode.
+
+  d_hash: called when the VFS adds a dentry to the hash table. The first
+	dentry passed to d_hash is the parent directory that the name is
+	to be hashed into. The inode is the dentry's inode.
+
+	Same locking and synchronisation rules as d_compare regarding
+	what is safe to dereference etc.
+
+  d_compare: called to compare a dentry name with a given name. The first
+	dentry is the parent of the dentry to be compared, the second is
+	the parent's inode, then the dentry and inode (may be NULL) of the
+	child dentry. len and name string are properties of the dentry to be
+	compared. qstr is the name to compare it with.
+
+	Must be constant and idempotent, and should not take locks if
+	possible, and should not or store into the dentry or inodes.
+	Should not dereference pointers outside the dentry or inodes without
+	lots of care (eg.  d_parent, d_inode, d_name should not be used).
+
+	However, our vfsmount is pinned, and RCU held, so the dentries and
+	inodes won't disappear, neither will our sb or filesystem module.
+	->i_sb and ->d_sb may be used.
 
-  d_compare: called when a dentry should be compared with another
+	It is a tricky calling convention because it needs to be called under
+	"rcu-walk", ie. without any locks or references on things.
 
-  d_delete: called when the last reference to a dentry is
-	deleted. This means no-one is using the dentry, however it is
-	still valid and in the dcache
+  d_delete: called when the last reference to a dentry is dropped and the
+	dcache is deciding whether or not to cache it. Return 1 to delete
+	immediately, or 0 to cache the dentry. Default is NULL which means to
+	always cache a reachable dentry. d_delete must be constant and
+	idempotent.
 
   d_release: called when a dentry is really deallocated
 
@@ -904,14 +953,11 @@ manipulate dentries:
 	the usage count)
 
   dput: close a handle for a dentry (decrements the usage count). If
-	the usage count drops to 0, the "d_delete" method is called
-	and the dentry is placed on the unused list if the dentry is
-	still in its parents hash list. Putting the dentry on the
-	unused list just means that if the system needs some RAM, it
-	goes through the unused list of dentries and deallocates them.
-	If the dentry has already been unhashed and the usage count
-	drops to 0, in this case the dentry is deallocated after the
-	"d_delete" method is called
+	the usage count drops to 0, and the dentry is still in its
+	parent's hash, the "d_delete" method is called to check whether
+	it should be cached. If it should not be cached, or if the dentry
+	is not hashed, it is deleted. Otherwise cached dentries are put
+	into an LRU list to be reclaimed on memory shortage.
 
   d_drop: this unhashes a dentry from its parents hash list. A
 	subsequent call to dput() will deallocate the dentry if its

Documentation/filesystems/xfs-delayed-logging-design.txt

@@ -794,17 +794,6 @@ designed.
 
 Roadmap:
 
-2.6.37 Remove experimental tag from mount option
-	=> should be roughly 6 months after initial merge
-	=> enough time to:
-		=> gain confidence and fix problems reported by early
-		   adopters (a.k.a. guinea pigs)
-		=> address worst performance regressions and undesired
-		   behaviours
-		=> start tuning/optimising code for parallelism
-		=> start tuning/optimising algorithms consuming
-		   excessive CPU time
-
 2.6.39 Switch default mount option to use delayed logging
 	=> should be roughly 12 months after initial merge
 	=> enough time to shake out remaining problems before next round of

Documentation/gpio.txt

@@ -617,6 +617,16 @@ and have the following read/write attributes:
 		is configured as an output, this value may be written;
 		any nonzero value is treated as high.
 
+		If the pin can be configured as interrupt-generating interrupt
+		and if it has been configured to generate interrupts (see the
+		description of "edge"), you can poll(2) on that file and
+		poll(2) will return whenever the interrupt was triggered. If
+		you use poll(2), set the events POLLPRI and POLLERR. If you
+		use select(2), set the file descriptor in exceptfds. After
+		poll(2) returns, either lseek(2) to the beginning of the sysfs
+		file and read the new value or close the file and re-open it
+		to read the value.
+
 	"edge" ... reads as either "none", "rising", "falling", or
 		"both". Write these strings to select the signal edge(s)
 		that will make poll(2) on the "value" file return.

Documentation/hwmon/lm93

@@ -11,7 +11,7 @@ Authors:
 	Mark M. Hoffman <mhoffman@lightlink.com>
 	Ported to 2.6 by Eric J. Bowersox <ericb@aspsys.com>
 	Adapted to 2.6.20 by Carsten Emde <ce@osadl.org>
-	Modified for mainline integration by Hans J. Koch <hjk@linutronix.de>
+	Modified for mainline integration by Hans J. Koch <hjk@hansjkoch.de>
 
 Module Parameters
 -----------------

Documentation/hwmon/max6650

@@ -8,7 +8,7 @@ Supported chips:
     Datasheet: http://pdfserv.maxim-ic.com/en/ds/MAX6650-MAX6651.pdf
 
 Authors:
-    Hans J. Koch <hjk@linutronix.de>
+    Hans J. Koch <hjk@hansjkoch.de>
     John Morris <john.morris@spirentcom.com>
     Claus Gindhart <claus.gindhart@kontron.com>
 

Documentation/input/cma3000_d0x.txt

@@ -0,0 +1,115 @@
+Kernel driver for CMA3000-D0x
+============================
+
+Supported chips:
+* VTI CMA3000-D0x
+Datasheet:
+  CMA3000-D0X Product Family Specification 8281000A.02.pdf
+  <http://www.vti.fi/en/>
+
+Author: Hemanth V <hemanthv@ti.com>
+
+
+Description
+-----------
+CMA3000 Tri-axis accelerometer supports Motion detect, Measurement and
+Free fall modes.
+
+Motion Detect Mode: Its the low power mode where interrupts are generated only
+when motion exceeds the defined thresholds.
+
+Measurement Mode: This mode is used to read the acceleration data on X,Y,Z
+axis and supports 400, 100, 40 Hz sample frequency.
+
+Free fall Mode: This mode is intended to save system resources.
+
+Threshold values: Chip supports defining threshold values for above modes
+which includes time and g value. Refer product specifications for more details.
+
+CMA3000 chip supports mutually exclusive I2C and SPI interfaces for
+communication, currently the driver supports I2C based communication only.
+Initial configuration for bus mode is set in non volatile memory and can later
+be modified through bus interface command.
+
+Driver reports acceleration data through input subsystem. It generates ABS_MISC
+event with value 1 when free fall is detected.
+
+Platform data need to be configured for initial default values.
+
+Platform Data
+-------------
+fuzz_x: Noise on X Axis
+
+fuzz_y: Noise on Y Axis
+
+fuzz_z: Noise on Z Axis
+
+g_range: G range in milli g i.e 2000 or 8000
+
+mode: Default Operating mode
+
+mdthr: Motion detect g range threshold value
+
+mdfftmr: Motion detect and free fall time threshold value
+
+ffthr: Free fall g range threshold value
+
+Input Interface
+--------------
+Input driver version is 1.0.0
+Input device ID: bus 0x18 vendor 0x0 product 0x0 version 0x0
+Input device name: "cma3000-accelerometer"
+Supported events:
+  Event type 0 (Sync)
+  Event type 3 (Absolute)
+    Event code 0 (X)
+      Value     47
+      Min    -8000
+      Max     8000
+      Fuzz     200
+    Event code 1 (Y)
+      Value    -28
+      Min    -8000
+      Max     8000
+      Fuzz     200
+    Event code 2 (Z)
+      Value    905
+      Min    -8000
+      Max     8000
+      Fuzz     200
+    Event code 40 (Misc)
+      Value      0
+      Min        0
+      Max        1
+  Event type 4 (Misc)
+
+
+Register/Platform parameters Description
+----------------------------------------
+
+mode:
+	0: power down mode
+	1: 100 Hz Measurement mode
+	2: 400 Hz Measurement mode
+	3: 40 Hz Measurement mode
+	4: Motion Detect mode (default)
+	5: 100 Hz Free fall mode
+	6: 40 Hz Free fall mode
+	7: Power off mode
+
+grange:
+	2000: 2000 mg or 2G Range
+	8000: 8000 mg or 8G Range
+
+mdthr:
+	X: X * 71mg (8G Range)
+	X: X * 18mg (2G Range)
+
+mdfftmr:
+	X: (X & 0x70) * 100 ms (MDTMR)
+	   (X & 0x0F) * 2.5 ms (FFTMR 400 Hz)
+	   (X & 0x0F) * 10 ms  (FFTMR 100 Hz)
+
+ffthr:
+       X: (X >> 2) * 18mg (2G Range)
+       X: (X & 0x0F) * 71 mg (8G Range)

Documentation/input/multi-touch-protocol.txt

@@ -1,6 +1,6 @@
 Multi-touch (MT) Protocol
 -------------------------
-	Copyright (C) 2009	Henrik Rydberg <rydberg@euromail.se>
+	Copyright (C) 2009-2010	Henrik Rydberg <rydberg@euromail.se>
 
 
 Introduction
@@ -161,19 +161,24 @@ against the glass. The inner region will increase, and in general, the
 ratio ABS_MT_TOUCH_MAJOR / ABS_MT_WIDTH_MAJOR, which is always smaller than
 unity, is related to the contact pressure. For pressure-based devices,
 ABS_MT_PRESSURE may be used to provide the pressure on the contact area
-instead.
+instead. Devices capable of contact hovering can use ABS_MT_DISTANCE to
+indicate the distance between the contact and the surface.
 
 In addition to the MAJOR parameters, the oval shape of the contact can be
 described by adding the MINOR parameters, such that MAJOR and MINOR are the
 major and minor axis of an ellipse. Finally, the orientation of the oval
 shape can be describe with the ORIENTATION parameter.
 
+For type A devices, further specification of the touch shape is possible
+via ABS_MT_BLOB_ID.
+
 The ABS_MT_TOOL_TYPE may be used to specify whether the touching tool is a
-contact or a pen or something else.  Devices with more granular information
-may specify general shapes as blobs, i.e., as a sequence of rectangular
-shapes grouped together by an ABS_MT_BLOB_ID. Finally, for the few devices
-that currently support it, the ABS_MT_TRACKING_ID event may be used to
-report contact tracking from hardware [5].
+finger or a pen or something else. Finally, the ABS_MT_TRACKING_ID event
+may be used to track identified contacts over time [5].
+
+In the type B protocol, ABS_MT_TOOL_TYPE and ABS_MT_TRACKING_ID are
+implicitly handled by input core; drivers should instead call
+input_mt_report_slot_state().
 
 
 Event Semantics
@@ -213,6 +218,12 @@ The pressure, in arbitrary units, on the contact area. May be used instead
 of TOUCH and WIDTH for pressure-based devices or any device with a spatial
 signal intensity distribution.
 
+ABS_MT_DISTANCE
+
+The distance, in surface units, between the contact and the surface. Zero
+distance means the contact is touching the surface. A positive number means
+the contact is hovering above the surface.
+
 ABS_MT_ORIENTATION
 
 The orientation of the ellipse. The value should describe a signed quarter
@@ -240,21 +251,24 @@ ABS_MT_TOOL_TYPE
 The type of approaching tool. A lot of kernel drivers cannot distinguish
 between different tool types, such as a finger or a pen. In such cases, the
 event should be omitted. The protocol currently supports MT_TOOL_FINGER and
-MT_TOOL_PEN [2].
+MT_TOOL_PEN [2]. For type B devices, this event is handled by input core;
+drivers should instead use input_mt_report_slot_state().
 
 ABS_MT_BLOB_ID
 
 The BLOB_ID groups several packets together into one arbitrarily shaped
-contact. This is a low-level anonymous grouping for type A devices, and
+contact. The sequence of points forms a polygon which defines the shape of
+the contact. This is a low-level anonymous grouping for type A devices, and
 should not be confused with the high-level trackingID [5]. Most type A
 devices do not have blob capability, so drivers can safely omit this event.
 
 ABS_MT_TRACKING_ID
 
 The TRACKING_ID identifies an initiated contact throughout its life cycle
-[5]. This event is mandatory for type B devices. The value range of the
-TRACKING_ID should be large enough to ensure unique identification of a
-contact maintained over an extended period of time.
+[5]. The value range of the TRACKING_ID should be large enough to ensure
+unique identification of a contact maintained over an extended period of
+time. For type B devices, this event is handled by input core; drivers
+should instead use input_mt_report_slot_state().
 
 
 Event Computation
@@ -301,18 +315,19 @@ and with ORIENTATION, one can detect twisting of fingers.
 Notes
 -----
 
-In order to stay compatible with existing applications, the data
-reported in a finger packet must not be recognized as single-touch
-events. In addition, all finger data must bypass input filtering,
-since subsequent events of the same type refer to different fingers.
+In order to stay compatible with existing applications, the data reported
+in a finger packet must not be recognized as single-touch events.
+
+For type A devices, all finger data bypasses input filtering, since
+subsequent events of the same type refer to different fingers.
 
-The first kernel driver to utilize the MT protocol is the bcm5974 driver,
-where examples can be found.
+For example usage of the type A protocol, see the bcm5974 driver. For
+example usage of the type B protocol, see the hid-egalax driver.
 
 [1] With the extension ABS_MT_APPROACH_X and ABS_MT_APPROACH_Y, the
 difference between the contact position and the approaching tool position
 could be used to derive tilt.
 [2] The list can of course be extended.
-[3] Multitouch X driver project: http://bitmath.org/code/multitouch/.
+[3] The mtdev project: http://bitmath.org/code/mtdev/.
 [4] See the section on event computation.
 [5] See the section on finger tracking.

Documentation/ioctl/ioctl-number.txt

@@ -155,7 +155,6 @@ Code  Seq#(hex)	Include File		Comments
 'Q'	all	linux/soundcard.h
 'R'	00-1F	linux/random.h		conflict!
 'R'	01	linux/rfkill.h		conflict!
-'R'	01-0F	media/rds.h		conflict!
 'R'	C0-DF	net/bluetooth/rfcomm.h
 'S'	all	linux/cdrom.h		conflict!
 'S'	80-81	scsi/scsi_ioctl.h	conflict!
@@ -194,7 +193,6 @@ Code  Seq#(hex)	Include File		Comments
 					<http://lrcwww.epfl.ch/>
 'b'	00-FF				conflict! bit3 vme host bridge
 					<mailto:natalia@nikhefk.nikhef.nl>
-'b'	00-0F	media/bt819.h		conflict!
 'c'	all	linux/cm4000_cs.h	conflict!
 'c'	00-7F	linux/comstats.h	conflict!
 'c'	00-7F	linux/coda.h		conflict!
@@ -260,14 +258,11 @@ Code  Seq#(hex)	Include File		Comments
 't'	80-8F	linux/isdn_ppp.h
 't'	90	linux/toshiba.h
 'u'	00-1F	linux/smb_fs.h		gone
-'v'	all	linux/videodev.h	conflict!
 'v'	00-1F	linux/ext2_fs.h		conflict!
 'v'	00-1F	linux/fs.h		conflict!
 'v'	00-0F	linux/sonypi.h		conflict!
-'v'	C0-CF	drivers/media/video/ov511.h	conflict!
 'v'	C0-DF	media/pwc-ioctl.h	conflict!
 'v'	C0-FF	linux/meye.h		conflict!
-'v'	C0-CF	drivers/media/video/zoran/zoran.h	conflict!
 'v'	D0-DF	drivers/media/video/cpia2/cpia2dev.h	conflict!
 'w'	all				CERN SCI driver
 'y'	00-1F				packet based user level communications
@@ -278,7 +273,6 @@ Code  Seq#(hex)	Include File		Comments
 					<mailto:oe@port.de>
 'z'	10-4F	drivers/s390/crypto/zcrypt_api.h	conflict!
 0x80	00-1F	linux/fb.h
-0x88	00-3F	media/ovcamchip.h
 0x89	00-06	arch/x86/include/asm/sockios.h
 0x89	0B-DF	linux/sockios.h
 0x89	E0-EF	linux/sockios.h		SIOCPROTOPRIVATE range

Documentation/kernel-docs.txt

@@ -537,7 +537,7 @@
        Notes: Further information in
        http://www.oreilly.com/catalog/linuxdrive2/
 
-     * Title: "Linux Device Drivers, 3nd Edition"
+     * Title: "Linux Device Drivers, 3rd Edition"
        Authors: Jonathan Corbet, Alessandro Rubini, and Greg Kroah-Hartman
        Publisher: O'Reilly & Associates.
        Date: 2005.
@@ -592,14 +592,6 @@
        Pages: 600.
        ISBN: 0-13-101908-2
 
-     * Title:  "The  Design  and Implementation of the 4.4 BSD UNIX
-       Operating System"
-       Author: Marshall Kirk McKusick, Keith Bostic, Michael J. Karels,
-       John S. Quarterman.
-       Publisher: Addison-Wesley.
-       Date: 1996.
-       ISBN: 0-201-54979-4
-
      * Title: "Programming for the real world - POSIX.4"
        Author: Bill O. Gallmeister.
        Publisher: O'Reilly & Associates, Inc..
@@ -610,28 +602,13 @@
        POSIX. Good reference.
 
      * Title:  "UNIX  Systems  for  Modern Architectures: Symmetric
-       Multiprocesssing and Caching for Kernel Programmers"
+       Multiprocessing and Caching for Kernel Programmers"
        Author: Curt Schimmel.
        Publisher: Addison Wesley.
        Date: June, 1994.
        Pages: 432.
        ISBN: 0-201-63338-8
 
-     * Title:  "The  Design  and Implementation of the 4.3 BSD UNIX
-       Operating System"
-       Author: Samuel J. Leffler, Marshall Kirk McKusick, Michael J.
-       Karels, John S. Quarterman.
-       Publisher: Addison-Wesley.
-       Date: 1989 (reprinted with corrections on October, 1990).
-       ISBN: 0-201-06196-1
-
-     * Title: "The Design of the UNIX Operating System"
-       Author: Maurice J. Bach.
-       Publisher: Prentice Hall.
-       Date: 1986.
-       Pages: 471.
-       ISBN: 0-13-201757-1
-
      MISCELLANEOUS:
 
      * Name: linux/Documentation

Documentation/kernel-parameters.txt

@@ -706,7 +706,7 @@ and is between 256 and 4096 characters. It is defined in the file
 			arch/x86/kernel/cpu/cpufreq/elanfreq.c.
 
 	elevator=	[IOSCHED]
-			Format: {"anticipatory" | "cfq" | "deadline" | "noop"}
+			Format: {"cfq" | "deadline" | "noop"}
 			See Documentation/block/as-iosched.txt and
 			Documentation/block/deadline-iosched.txt for details.
 
@@ -1579,20 +1579,12 @@ and is between 256 and 4096 characters. It is defined in the file
 
 	nmi_watchdog=	[KNL,BUGS=X86] Debugging features for SMP kernels
 			Format: [panic,][num]
-			Valid num: 0,1,2
+			Valid num: 0
 			0 - turn nmi_watchdog off
-			1 - use the IO-APIC timer for the NMI watchdog
-			2 - use the local APIC for the NMI watchdog using
-			a performance counter. Note: This will use one
-			performance counter and the local APIC's performance
-			vector.
 			When panic is specified, panic when an NMI watchdog
 			timeout occurs.
 			This is useful when you use a panic=... timeout and
 			need the box quickly up again.
-			Instead of 1 and 2 it is possible to use the following
-			symbolic names: lapic and ioapic
-			Example: nmi_watchdog=2 or nmi_watchdog=panic,lapic
 
 	netpoll.carrier_timeout=
 			[NET] Specifies amount of time (in seconds) that
@@ -1622,6 +1614,8 @@ and is between 256 and 4096 characters. It is defined in the file
 	noapic		[SMP,APIC] Tells the kernel to not make use of any
 			IOAPICs that may be present in the system.
 
+	noautogroup	Disable scheduler automatic task group creation.
+
 	nobats		[PPC] Do not use BATs for mapping kernel lowmem
 			on "Classic" PPC cores.
 
@@ -1759,7 +1753,7 @@ and is between 256 and 4096 characters. It is defined in the file
 
 	nousb		[USB] Disable the USB subsystem
 
-	nowatchdog	[KNL] Disable the lockup detector.
+	nowatchdog	[KNL] Disable the lockup detector (NMI watchdog).
 
 	nowb		[ARM]
 
@@ -2175,11 +2169,6 @@ and is between 256 and 4096 characters. It is defined in the file
 	reset_devices	[KNL] Force drivers to reset the underlying device
 			during initialization.
 
-	resource_alloc_from_bottom
-			Allocate new resources from the beginning of available
-			space, not the end.  If you need to use this, please
-			report a bug.
-
 	resume=		[SWSUSP]
 			Specify the partition device for software suspend
 
@@ -2385,6 +2374,11 @@ and is between 256 and 4096 characters. It is defined in the file
 			improve throughput, but will also increase the
 			amount of memory reserved for use by the client.
 
+	swapaccount[=0|1]
+			[KNL] Enable accounting of swap in memory resource
+			controller if no parameter or 1 is given or disable
+			it if 0 is given (See Documentation/cgroups/memory.txt)
+
 	swiotlb=	[IA-64] Number of I/O TLB slabs
 
 	switches=	[HW,M68k]
@@ -2467,12 +2461,13 @@ and is between 256 and 4096 characters. It is defined in the file
 			to facilitate early boot debugging.
 			See also Documentation/trace/events.txt
 
-	tsc=		Disable clocksource-must-verify flag for TSC.
+	tsc=		Disable clocksource stability checks for TSC.
 			Format: <string>
 			[x86] reliable: mark tsc clocksource as reliable, this
-			disables clocksource verification at runtime.
-			Used to enable high-resolution timer mode on older
-			hardware, and in virtualized environment.
+			disables clocksource verification at runtime, as well
+			as the stability checks done at bootup.	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

Documentation/leds-class.txt

@@ -60,15 +60,18 @@ Hardware accelerated blink of LEDs
 
 Some LEDs can be programmed to blink without any CPU interaction. To
 support this feature, a LED driver can optionally implement the
-blink_set() function (see <linux/leds.h>). If implemented, triggers can
-attempt to use it before falling back to software timers. The blink_set()
-function should return 0 if the blink setting is supported, or -EINVAL
-otherwise, which means that LED blinking will be handled by software.
-
-The blink_set() function should choose a user friendly blinking
-value if it is called with *delay_on==0 && *delay_off==0 parameters. In
-this case the driver should give back the chosen value through delay_on
-and delay_off parameters to the leds subsystem.
+blink_set() function (see <linux/leds.h>). To set an LED to blinking,
+however, it is better to use use the API function led_blink_set(),
+as it will check and implement software fallback if necessary.
+
+To turn off blinking again, use the API function led_brightness_set()
+as that will not just set the LED brightness but also stop any software
+timers that may have been required for blinking.
+
+The blink_set() function should choose a user friendly blinking value
+if it is called with *delay_on==0 && *delay_off==0 parameters. In this
+case the driver should give back the chosen value through delay_on and
+delay_off parameters to the leds subsystem.
 
 Setting the brightness to zero with brightness_set() callback function
 should completely turn off the LED and cancel the previously programmed

Documentation/leds/leds-lp5521.txt

@@ -0,0 +1,88 @@
+Kernel driver for lp5521
+========================
+
+* National Semiconductor LP5521 led driver chip
+* Datasheet: http://www.national.com/pf/LP/LP5521.html
+
+Authors: Mathias Nyman, Yuri Zaporozhets, Samu Onkalo
+Contact: Samu Onkalo (samu.p.onkalo-at-nokia.com)
+
+Description
+-----------
+
+LP5521 can drive up to 3 channels. Leds can be controlled directly via
+the led class control interface. Channels have generic names:
+lp5521:channelx, where x is 0 .. 2
+
+All three channels can be also controlled using the engine micro programs.
+More details of the instructions can be found from the public data sheet.
+
+Control interface for the engines:
+x is 1 .. 3
+enginex_mode : disabled, load, run
+enginex_load : store program (visible only in engine load mode)
+
+Example (start to blink the channel 2 led):
+cd   /sys/class/leds/lp5521:channel2/device
+echo "load" > engine3_mode
+echo "037f4d0003ff6000" > engine3_load
+echo "run" > engine3_mode
+
+stop the engine:
+echo "disabled" > engine3_mode
+
+sysfs contains a selftest entry.
+The test communicates with the chip and checks that
+the clock mode is automatically set to the requested one.
+
+Each channel has its own led current settings.
+/sys/class/leds/lp5521:channel0/led_current - RW
+/sys/class/leds/lp5521:channel0/max_current - RO
+Format: 10x mA i.e 10 means 1.0 mA
+
+example platform data:
+
+Note: chan_nr can have values between 0 and 2.
+
+static struct lp5521_led_config lp5521_led_config[] = {
+        {
+                .chan_nr        = 0,
+                .led_current    = 50,
+		.max_current    = 130,
+        }, {
+                .chan_nr        = 1,
+                .led_current    = 0,
+		.max_current    = 130,
+        }, {
+                .chan_nr        = 2,
+                .led_current    = 0,
+		.max_current    = 130,
+        }
+};
+
+static int lp5521_setup(void)
+{
+	/* setup HW resources */
+}
+
+static void lp5521_release(void)
+{
+	/* Release HW resources */
+}
+
+static void lp5521_enable(bool state)
+{
+	/* Control of chip enable signal */
+}
+
+static struct lp5521_platform_data lp5521_platform_data = {
+        .led_config     = lp5521_led_config,
+        .num_channels   = ARRAY_SIZE(lp5521_led_config),
+        .clock_mode     = LP5521_CLOCK_EXT,
+        .setup_resources   = lp5521_setup,
+        .release_resources = lp5521_release,
+        .enable            = lp5521_enable,
+};
+
+If the current is set to 0 in the platform data, that channel is
+disabled and it is not visible in the sysfs.

Documentation/leds/leds-lp5523.txt

@@ -0,0 +1,83 @@
+Kernel driver for lp5523
+========================
+
+* National Semiconductor LP5523 led driver chip
+* Datasheet: http://www.national.com/pf/LP/LP5523.html
+
+Authors: Mathias Nyman, Yuri Zaporozhets, Samu Onkalo
+Contact: Samu Onkalo (samu.p.onkalo-at-nokia.com)
+
+Description
+-----------
+LP5523 can drive up to 9 channels. Leds can be controlled directly via
+the led class control interface. Channels have generic names:
+lp5523:channelx where x is 0...8
+
+The chip provides 3 engines. Each engine can control channels without
+interaction from the main CPU. Details of the micro engine code can be found
+from the public data sheet. Leds can be muxed to different channels.
+
+Control interface for the engines:
+x is 1 .. 3
+enginex_mode : disabled, load, run
+enginex_load : microcode load (visible only in load mode)
+enginex_leds : led mux control (visible only in load mode)
+
+cd /sys/class/leds/lp5523:channel2/device
+echo "load" > engine3_mode
+echo "9d80400004ff05ff437f0000" > engine3_load
+echo "111111111" > engine3_leds
+echo "run" > engine3_mode
+
+sysfs contains a selftest entry. It measures each channel
+voltage level and checks if it looks reasonable. If the level is too high,
+the led is missing; if the level is too low, there is a short circuit.
+
+Selftest uses always the current from the platform data.
+
+Each channel contains led current settings.
+/sys/class/leds/lp5523:channel2/led_current - RW
+/sys/class/leds/lp5523:channel2/max_current - RO
+Format: 10x mA i.e 10 means 1.0 mA
+
+Example platform data:
+
+Note - chan_nr can have values between 0 and 8.
+
+static struct lp5523_led_config lp5523_led_config[] = {
+        {
+                .chan_nr        = 0,
+                .led_current    = 50,
+		.max_current    = 130,
+        },
+...
+        }, {
+                .chan_nr        = 8,
+                .led_current    = 50,
+		.max_current    = 130,
+        }
+};
+
+static int lp5523_setup(void)
+{
+	/* Setup HW resources */
+}
+
+static void lp5523_release(void)
+{
+	/* Release HW resources */
+}
+
+static void lp5523_enable(bool state)
+{
+	/* Control chip enable signal */
+}
+
+static struct lp5523_platform_data lp5523_platform_data = {
+        .led_config     = lp5523_led_config,
+        .num_channels   = ARRAY_SIZE(lp5523_led_config),
+        .clock_mode     = LP5523_CLOCK_EXT,
+        .setup_resources   = lp5523_setup,
+        .release_resources = lp5523_release,
+        .enable            = lp5523_enable,
+};

Documentation/networking/LICENSE.qlcnic

@@ -0,0 +1,327 @@
+Copyright (c) 2009-2010 QLogic Corporation
+QLogic Linux qlcnic NIC Driver
+
+This program includes a device driver for Linux 2.6 that may be
+distributed with QLogic hardware specific firmware binary file.
+You may modify and redistribute the device driver code under the
+GNU General Public License (a copy of which is attached hereto as
+Exhibit A) published by the Free Software Foundation (version 2).
+
+You may redistribute the hardware specific firmware binary file
+under the following terms:
+
+       1. Redistribution of source code (only if applicable),
+          must retain the above copyright notice, this list of
+          conditions and the following disclaimer.
+
+       2. Redistribution in binary form must reproduce the above
+          copyright notice, this list of conditions and the
+          following disclaimer in the documentation and/or other
+          materials provided with the distribution.
+
+       3. The name of QLogic Corporation may not be used to
+          endorse or promote products derived from this software
+          without specific prior written permission
+
+REGARDLESS OF WHAT LICENSING MECHANISM IS USED OR APPLICABLE,
+THIS PROGRAM IS PROVIDED BY QLOGIC CORPORATION "AS IS'' AND ANY
+EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
+PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR
+BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED
+TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
+ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+POSSIBILITY OF SUCH DAMAGE.
+
+USER ACKNOWLEDGES AND AGREES THAT USE OF THIS PROGRAM WILL NOT
+CREATE OR GIVE GROUNDS FOR A LICENSE BY IMPLICATION, ESTOPPEL, OR
+OTHERWISE IN ANY INTELLECTUAL PROPERTY RIGHTS (PATENT, COPYRIGHT,
+TRADE SECRET, MASK WORK, OR OTHER PROPRIETARY RIGHT) EMBODIED IN
+ANY OTHER QLOGIC HARDWARE OR SOFTWARE EITHER SOLELY OR IN
+COMBINATION WITH THIS PROGRAM.
+
+
+EXHIBIT A
+
+                   GNU GENERAL PUBLIC LICENSE
+                      Version 2, June 1991
+
+ Copyright (C) 1989, 1991 Free Software Foundation, Inc.
+ 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+ Everyone is permitted to copy and distribute verbatim copies
+ of this license document, but changing it is not allowed.
+
+                           Preamble
+
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+freedom to share and change it.  By contrast, the GNU General Public
+License is intended to guarantee your freedom to share and change free
+software--to make sure the software is free for all its users.  This
+General Public License applies to most of the Free Software
+Foundation's software and to any other program whose authors commit to
+using it.  (Some other Free Software Foundation software is covered by
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+your programs, too.
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+price.  Our General Public Licenses are designed to make sure that you
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+if you want it, that you can change the software or use pieces of it
+in new free programs; and that you know you can do these things.
+
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+anyone to deny you these rights or to ask you to surrender the rights.
+These restrictions translate to certain responsibilities for you if you
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+
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+
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+
+  9. The Free Software Foundation may publish revised and/or new versions
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+address new problems or concerns.
+
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+
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+                           NO WARRANTY
+
+  11. BECAUSE THE PROGRAM IS LICENSED FREE OF CHARGE, THERE IS NO WARRANTY
+FOR THE PROGRAM, TO THE EXTENT PERMITTED BY APPLICABLE LAW.  EXCEPT WHEN
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+YOU OR THIRD PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER
+PROGRAMS), EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE
+POSSIBILITY OF SUCH DAMAGES.

Documentation/networking/batman-adv.txt

@@ -0,0 +1,240 @@
+[state: 21-11-2010]
+
+BATMAN-ADV
+----------
+
+Batman  advanced  is  a new approach to wireless networking which
+does no longer operate on the IP basis. Unlike the batman daemon,
+which  exchanges  information  using UDP packets and sets routing
+tables, batman-advanced operates on ISO/OSI Layer 2 only and uses
+and  routes  (or  better: bridges) Ethernet Frames. It emulates a
+virtual network switch of all nodes participating.  Therefore all
+nodes  appear  to be link local, thus all higher operating proto-
+cols won't be affected by any changes within the network. You can
+run almost any protocol above batman advanced, prominent examples
+are: IPv4, IPv6, DHCP, IPX.
+
+Batman advanced was implemented as a Linux kernel driver  to  re-
+duce the overhead to a minimum. It does not depend on any (other)
+network driver, and can be used on wifi as well as ethernet  lan,
+vpn,  etc ... (anything with ethernet-style layer 2).
+
+CONFIGURATION
+-------------
+
+Load the batman-adv module into your kernel:
+
+# insmod batman-adv.ko
+
+The  module  is now waiting for activation. You must add some in-
+terfaces on which batman can operate. After  loading  the  module
+batman  advanced  will scan your systems interfaces to search for
+compatible interfaces. Once found, it will create  subfolders  in
+the /sys directories of each supported interface, e.g.
+
+# ls /sys/class/net/eth0/batman_adv/
+# iface_status  mesh_iface
+
+If an interface does not have the "batman_adv" subfolder it prob-
+ably is not supported. Not supported  interfaces  are:  loopback,
+non-ethernet and batman's own interfaces.
+
+Note:  After the module was loaded it will continuously watch for
+new interfaces to verify the compatibility. There is no  need  to
+reload the module if you plug your USB wifi adapter into your ma-
+chine after batman advanced was initially loaded.
+
+To activate a  given  interface  simply  write  "bat0"  into  its
+"mesh_iface" file inside the batman_adv subfolder:
+
+# echo bat0 > /sys/class/net/eth0/batman_adv/mesh_iface
+
+Repeat  this step for all interfaces you wish to add.  Now batman
+starts using/broadcasting on this/these interface(s).
+
+By reading the "iface_status" file you can check its status:
+
+# cat /sys/class/net/eth0/batman_adv/iface_status
+# active
+
+To deactivate an interface you have  to  write  "none"  into  its
+"mesh_iface" file:
+
+# echo none > /sys/class/net/eth0/batman_adv/mesh_iface
+
+
+All  mesh  wide  settings  can be found in batman's own interface
+folder:
+
+#  ls  /sys/class/net/bat0/mesh/
+#  aggregated_ogms  bonding  fragmentation  orig_interval
+#  vis_mode
+
+
+There is a special folder for debugging informations:
+
+#  ls /sys/kernel/debug/batman_adv/bat0/
+#  originators  socket  transtable_global  transtable_local
+#  vis_data
+
+
+Some of the files contain all sort of status information  regard-
+ing  the  mesh  network.  For  example, you can view the table of
+originators (mesh participants) with:
+
+# cat /sys/kernel/debug/batman_adv/bat0/originators
+
+Other files allow to change batman's behaviour to better fit your
+requirements.  For instance, you can check the current originator
+interval (value in milliseconds which determines how often batman
+sends its broadcast packets):
+
+# cat /sys/class/net/bat0/mesh/orig_interval
+# 1000
+
+and also change its value:
+
+# echo 3000 > /sys/class/net/bat0/mesh/orig_interval
+
+In very mobile scenarios, you might want to adjust the originator
+interval to a lower value. This will make the mesh  more  respon-
+sive to topology changes, but will also increase the overhead.
+
+
+USAGE
+-----
+
+To  make use of your newly created mesh, batman advanced provides
+a new interface "bat0" which you should use from this  point  on.
+All  interfaces  added  to  batman  advanced are not relevant any
+longer because batman handles them for you. Basically, one "hands
+over" the data by using the batman interface and batman will make
+sure it reaches its destination.
+
+The "bat0" interface can be used like any  other  regular  inter-
+face.  It needs an IP address which can be either statically con-
+figured or dynamically (by using DHCP or similar services):
+
+# NodeA: ifconfig bat0 192.168.0.1
+# NodeB: ifconfig bat0 192.168.0.2
+# NodeB: ping 192.168.0.1
+
+Note:  In  order to avoid problems remove all IP addresses previ-
+ously assigned to interfaces now used by batman advanced, e.g.
+
+# ifconfig eth0 0.0.0.0
+
+
+VISUALIZATION
+-------------
+
+If you want topology visualization, at least one mesh  node  must
+be configured as VIS-server:
+
+# echo "server" > /sys/class/net/bat0/mesh/vis_mode
+
+Each  node  is  either configured as "server" or as "client" (de-
+fault: "client").  Clients send their topology data to the server
+next to them, and server synchronize with other servers. If there
+is no server configured (default) within the  mesh,  no  topology
+information   will  be  transmitted.  With  these  "synchronizing
+servers", there can be 1 or more vis servers sharing the same (or
+at least very similar) data.
+
+When  configured  as  server,  you can get a topology snapshot of
+your mesh:
+
+# cat /sys/kernel/debug/batman_adv/bat0/vis_data
+
+This raw output is intended to be easily parsable and convertable
+with  other tools. Have a look at the batctl README if you want a
+vis output in dot or json format for instance and how those  out-
+puts could then be visualised in an image.
+
+The raw format consists of comma separated values per entry where
+each entry is giving information about a  certain  source  inter-
+face.  Each  entry can/has to have the following values:
+-> "mac" - mac address of an originator's source interface
+           (each line begins with it)
+-> "TQ mac  value"  -  src mac's link quality towards mac address
+                       of a neighbor originator's interface which
+                       is being used for routing
+-> "HNA mac" - HNA announced by source mac
+-> "PRIMARY" - this  is a primary interface
+-> "SEC mac" - secondary mac address of source
+               (requires preceding PRIMARY)
+
+The TQ value has a range from 4 to 255 with 255 being  the  best.
+The HNA entries are showing which hosts are connected to the mesh
+via bat0 or being bridged into the mesh network.  The PRIMARY/SEC
+values are only applied on primary interfaces
+
+
+LOGGING/DEBUGGING
+-----------------
+
+All error messages, warnings and information messages are sent to
+the kernel log. Depending on your operating  system  distribution
+this  can  be read in one of a number of ways. Try using the com-
+mands: dmesg, logread, or looking in the files  /var/log/kern.log
+or  /var/log/syslog.  All  batman-adv  messages are prefixed with
+"batman-adv:" So to see just these messages try
+
+# dmesg | grep batman-adv
+
+When investigating problems with your mesh network  it  is  some-
+times  necessary  to see more detail debug messages. This must be
+enabled when compiling the batman-adv module. When building  bat-
+man-adv  as  part of kernel, use "make menuconfig" and enable the
+option "B.A.T.M.A.N. debugging".
+
+Those additional  debug messages can be accessed  using a special
+file in debugfs
+
+# cat /sys/kernel/debug/batman_adv/bat0/log
+
+The additional debug output is by default disabled. It can be en-
+abled  during run time. Following log_levels are defined:
+
+0 - All  debug  output  disabled
+1 - Enable messages related to routing / flooding / broadcasting
+2 - Enable route or hna added / changed / deleted
+3 - Enable all messages
+
+The debug output can be changed at runtime  using  the  file
+/sys/class/net/bat0/mesh/log_level. e.g.
+
+# echo 2 > /sys/class/net/bat0/mesh/log_level
+
+will enable debug messages for when routes or HNAs change.
+
+
+BATCTL
+------
+
+As batman advanced operates on layer 2 all hosts participating in
+the  virtual switch are completely transparent for all  protocols
+above layer 2. Therefore the common diagnosis tools do  not  work
+as  expected.  To  overcome these problems batctl was created. At
+the  moment the  batctl contains ping,  traceroute,  tcpdump  and
+interfaces to the kernel module settings.
+
+For more information, please see the manpage (man batctl).
+
+batctl is available on http://www.open-mesh.org/
+
+
+CONTACT
+-------
+
+Please send us comments, experiences, questions, anything :)
+
+IRC:            #batman   on   irc.freenode.org
+Mailing-list:   b.a.t.m.a.n@b.a.t.m.a.n@lists.open-mesh.org
+                (optional   subscription   at
+                 https://lists.open-mesh.org/mm/listinfo/b.a.t.m.a.n)
+
+You can also contact the Authors:
+
+Marek  Lindner  <lindner_marek@yahoo.de>
+Simon  Wunderlich  <siwu@hrz.tu-chemnitz.de>

Documentation/networking/dccp.txt

@@ -47,6 +47,26 @@ http://linux-net.osdl.org/index.php/DCCP_Testing#Experimental_DCCP_source_tree
 
 Socket options
 ==============
+DCCP_SOCKOPT_QPOLICY_ID sets the dequeuing policy for outgoing packets. It takes
+a policy ID as argument and can only be set before the connection (i.e. changes
+during an established connection are not supported). Currently, two policies are
+defined: the "simple" policy (DCCPQ_POLICY_SIMPLE), which does nothing special,
+and a priority-based variant (DCCPQ_POLICY_PRIO). The latter allows to pass an
+u32 priority value as ancillary data to sendmsg(), where higher numbers indicate
+a higher packet priority (similar to SO_PRIORITY). This ancillary data needs to
+be formatted using a cmsg(3) message header filled in as follows:
+	cmsg->cmsg_level = SOL_DCCP;
+	cmsg->cmsg_type	 = DCCP_SCM_PRIORITY;
+	cmsg->cmsg_len	 = CMSG_LEN(sizeof(uint32_t));	/* or CMSG_LEN(4) */
+
+DCCP_SOCKOPT_QPOLICY_TXQLEN sets the maximum length of the output queue. A zero
+value is always interpreted as unbounded queue length. If different from zero,
+the interpretation of this parameter depends on the current dequeuing policy
+(see above): the "simple" policy will enforce a fixed queue size by returning
+EAGAIN, whereas the "prio" policy enforces a fixed queue length by dropping the
+lowest-priority packet first. The default value for this parameter is
+initialised from /proc/sys/net/dccp/default/tx_qlen.
+
 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

Documentation/networking/e100.txt

@@ -72,7 +72,7 @@ Tx Descriptors: Number of transmit descriptors. A transmit descriptor is a data
    ethtool -G eth? tx n, where n is the number of desired tx descriptors.
 
 Speed/Duplex: The driver auto-negotiates the link speed and duplex settings by
-   default. Ethtool can be used as follows to force speed/duplex.
+   default. The ethtool utility can be used as follows to force speed/duplex.
 
    ethtool -s eth?  autoneg off speed {10|100} duplex {full|half}
 
@@ -126,30 +126,21 @@ Additional Configurations
   -------
 
   The driver utilizes the ethtool interface for driver configuration and
-  diagnostics, as well as displaying statistical information.  Ethtool
+  diagnostics, as well as displaying statistical information.  The ethtool
   version 1.6 or later is required for this functionality.
 
   The latest release of ethtool can be found from
-  http://sourceforge.net/projects/gkernel.
-
-  NOTE: Ethtool 1.6 only supports a limited set of ethtool options. Support
-  for a more complete ethtool feature set can be enabled by upgrading
-  ethtool to ethtool-1.8.1.
-
+  http://ftp.kernel.org/pub/software/network/ethtool/
 
   Enabling Wake on LAN* (WoL)
   ---------------------------
-  WoL is provided through the Ethtool* utility. Ethtool is included with Red
-  Hat* 8.0. For other Linux distributions, download and install Ethtool from
-  the following website: http://sourceforge.net/projects/gkernel.
-
-  For instructions on enabling WoL with Ethtool, refer to the Ethtool man page.
+  WoL is provided 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 e100 driver must be
   loaded when shutting down or rebooting the system.
 
-
   NAPI
   ----
 

Documentation/networking/e1000.txt

@@ -79,7 +79,7 @@ InterruptThrottleRate
 ---------------------
 (not supported on Intel(R) 82542, 82543 or 82544-based adapters)
 Valid Range:   0,1,3,4,100-100000 (0=off, 1=dynamic, 3=dynamic conservative,
-                                   4=simplified balancing)
+                                 4=simplified balancing)
 Default Value: 3
 
 The driver can limit the amount of interrupts per second that the adapter
@@ -124,8 +124,8 @@ 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
+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.
@@ -245,7 +245,7 @@ NOTE:  Depending on the available system resources, the request for a
 TxDescriptorStep
 ----------------
 Valid Range:    1 (use every Tx Descriptor)
-		4 (use every 4th Tx Descriptor)
+                4 (use every 4th Tx Descriptor)
 
 Default Value:  1 (use every Tx Descriptor)
 
@@ -312,7 +312,7 @@ Valid Range:   0-xxxxxxx (0=off)
 Default Value: 256
 Usage: insmod e1000.ko copybreak=128
 
-Driver copies all packets below or equaling this size to a fresh Rx
+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
@@ -431,15 +431,15 @@ Additional Configurations
   Ethtool
   -------
   The driver utilizes the ethtool interface for driver configuration and
-  diagnostics, as well as displaying statistical information.  Ethtool
+  diagnostics, as well as displaying statistical information.  The ethtool
   version 1.6 or later is required for this functionality.
 
   The latest release of ethtool can be found from
-  http://sourceforge.net/projects/gkernel.
+  http://ftp.kernel.org/pub/software/network/ethtool/
 
   Enabling Wake on LAN* (WoL)
   ---------------------------
-  WoL is configured through the Ethtool* utility.
+  WoL is configured through the ethtool* utility.
 
   WoL will be enabled on the system during the next shut down or reboot.
   For this driver version, in order to enable WoL, the e1000 driver must be

Documentation/networking/e1000e.txt

@@ -1,5 +1,5 @@
 Linux* Driver for Intel(R) Network Connection
-===============================================================
+=============================================
 
 Intel Gigabit Linux driver.
 Copyright(c) 1999 - 2010 Intel Corporation.
@@ -61,6 +61,12 @@ 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 default behaviour of the driver previously assumed a static
+InterruptThrottleRate value of 8000, providing a good fallback value for
+all traffic types, but lacking in small packet performance and latency.
+The hardware can handle many more small packets per second however, and
+for this reason an adaptive interrupt moderation algorithm was implemented.
+
 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
@@ -86,8 +92,8 @@ 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
+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.
@@ -177,7 +183,7 @@ Copybreak
 Valid Range:   0-xxxxxxx (0=off)
 Default Value: 256
 
-Driver copies all packets below or equaling this size to a fresh Rx
+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
@@ -223,17 +229,17 @@ 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.
+Valid Range: 0,1
+Default Value: 1
+
+If set to 1, configure the hardware to ignore all write/erase cycles to the
+GbE region in the ICHx NVM (in order to prevent accidental corruption of the
+NVM). This feature can be disabled by setting the parameter to 0 during initial
+driver load.
+NOTE: The machine must be power cycled (full off/on) when enabling NVM writes
+via setting the parameter to zero. Once the NVM has been locked (via the
+parameter at 1 when the driver loads) it cannot be unlocked except via power
+cycle.
 
 Additional Configurations
 =========================
@@ -259,32 +265,30 @@ Additional Configurations
   - 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:
+  strongly recommend downloading the latest version of ethtool at:
 
-  http://sourceforge.net/projects/gkernel.
+  http://ftp.kernel.org/pub/software/network/ethtool/
 
   Speed and Duplex
   ----------------
-  Speed and Duplex are configured through the Ethtool* utility. For
-  instructions,  refer to the Ethtool man page.
+  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 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>.
-
+  adapters. To verify if a port supports Wake on Lan run ethtool eth<X>.
 
 Support
 =======

Documentation/networking/igb.txt

@@ -36,6 +36,7 @@ Default Value: 0
 This parameter adds support for SR-IOV.  It causes the driver to spawn up to
 max_vfs worth of virtual function.
 
+
 Additional Configurations
 =========================
 
@@ -60,15 +61,16 @@ Additional Configurations
   Ethtool
   -------
   The driver utilizes the ethtool interface for driver configuration and
-  diagnostics, as well as displaying statistical information.
+  diagnostics, as well as displaying statistical information. The latest
+  version of ethtool can be found at:
 
-  http://sourceforge.net/projects/gkernel.
+  http://ftp.kernel.org/pub/software/network/ethtool/
 
   Enabling Wake on LAN* (WoL)
   ---------------------------
-  WoL is configured through the Ethtool* utility.
+  WoL is configured through the ethtool* utility.
 
-  For instructions on enabling WoL with Ethtool, refer to the Ethtool man page.
+  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 igb driver must be
@@ -91,31 +93,6 @@ Additional Configurations
   REQUIREMENTS: MSI-X support is required for Multiqueue. If MSI-X is not
   found, the system will fallback to MSI or to Legacy interrupts.
 
-  LRO
-  ---
-  Large Receive Offload (LRO) is a technique for increasing inbound throughput
-  of high-bandwidth network connections by reducing CPU overhead. It works by
-  aggregating multiple incoming packets from a single stream into a larger
-  buffer before they are passed higher up the networking stack, thus reducing
-  the number of packets that have to be processed. LRO combines multiple
-  Ethernet frames into a single receive in the stack, thereby potentially
-  decreasing CPU utilization for receives.
-
-  NOTE: You need to have inet_lro enabled via either the CONFIG_INET_LRO or
-  CONFIG_INET_LRO_MODULE kernel config option. Additionally, if
-  CONFIG_INET_LRO_MODULE is used, the inet_lro module needs to be loaded
-  before the igb driver.
-
-  You can verify that the driver is using LRO by looking at these counters in
-  Ethtool:
-
-  lro_aggregated - count of total packets that were combined
-  lro_flushed - counts the number of packets flushed out of LRO
-  lro_no_desc - counts the number of times an LRO descriptor was not available
-  for the LRO packet
-
-  NOTE: IPv6 and UDP are not supported by LRO.
-
 Support
 =======
 

Documentation/networking/igbvf.txt

@@ -58,9 +58,11 @@ Additional Configurations
   Ethtool
   -------
   The driver utilizes the ethtool interface for driver configuration and
-  diagnostics, as well as displaying statistical information.
+  diagnostics, as well as displaying statistical information.  The ethtool
+  version 3.0 or later is required for this functionality, although we
+  strongly recommend downloading the latest version at:
 
-  http://sourceforge.net/projects/gkernel.
+  http://ftp.kernel.org/pub/software/network/ethtool/
 
 Support
 =======

Documentation/networking/ip-sysctl.txt

@@ -11,7 +11,9 @@ ip_forward - BOOLEAN
 	for routers)
 
 ip_default_ttl - INTEGER
-	default 64
+	Default value of TTL field (Time To Live) for outgoing (but not
+	forwarded) IP packets. Should be between 1 and 255 inclusive.
+	Default: 64 (as recommended by RFC1700)
 
 ip_no_pmtu_disc - BOOLEAN
 	Disable Path MTU Discovery.
@@ -20,6 +22,15 @@ ip_no_pmtu_disc - BOOLEAN
 min_pmtu - INTEGER
 	default 562 - minimum discovered Path MTU
 
+route/max_size - INTEGER
+	Maximum number of routes allowed in the kernel.  Increase
+	this when using large numbers of interfaces and/or routes.
+
+neigh/default/gc_thresh3 - INTEGER
+	Maximum number of neighbor entries allowed.  Increase this
+	when using large numbers of interfaces and when communicating
+	with large numbers of directly-connected peers.
+
 mtu_expires - INTEGER
 	Time, in seconds, that cached PMTU information is kept.
 
@@ -135,6 +146,7 @@ tcp_adv_win_scale - INTEGER
 	Count buffering overhead as bytes/2^tcp_adv_win_scale
 	(if tcp_adv_win_scale > 0) or bytes-bytes/2^(-tcp_adv_win_scale),
 	if it is <= 0.
+	Possible values are [-31, 31], inclusive.
 	Default: 2
 
 tcp_allowed_congestion_control - STRING
@@ -698,10 +710,28 @@ igmp_max_memberships - INTEGER
 	Change the maximum number of multicast groups we can subscribe to.
 	Default: 20
 
-conf/interface/*  changes special settings per interface (where "interface" is
-		  the name of your network interface)
-conf/all/*	  is special, changes the settings for all interfaces
+	Theoretical maximum value is bounded by having to send a membership
+	report in a single datagram (i.e. the report can't span multiple
+	datagrams, or risk confusing the switch and leaving groups you don't
+	intend to).
+
+	The number of supported groups 'M' is bounded by the number of group
+	report entries you can fit into a single datagram of 65535 bytes.
+
+	M = 65536-sizeof (ip header)/(sizeof(Group record))
+
+	Group records are variable length, with a minimum of 12 bytes.
+	So net.ipv4.igmp_max_memberships should not be set higher than:
+
+	(65536-24) / 12 = 5459
+
+	The value 5459 assumes no IP header options, so in practice
+	this number may be lower.
+
+	conf/interface/*  changes special settings per interface (where
+	"interface" is the name of your network interface)
 
+	conf/all/*	  is special, changes the settings for all interfaces
 
 log_martians - BOOLEAN
 	Log packets with impossible addresses to kernel log.

Documentation/networking/ixgb.txt

@@ -309,15 +309,15 @@ Additional Configurations
   Ethtool
   -------
   The driver utilizes the ethtool interface for driver configuration and
-  diagnostics, as well as displaying statistical information.  Ethtool
+  diagnostics, as well as displaying statistical information.  The ethtool
   version 1.6 or later is required for this functionality.
 
   The latest release of ethtool can be found from
-  http://sourceforge.net/projects/gkernel
+  http://ftp.kernel.org/pub/software/network/ethtool/
 
-  NOTE: Ethtool 1.6 only supports a limited set of ethtool options. Support
-        for a more complete ethtool feature set can be enabled by upgrading
-        to the latest version.
+  NOTE: The ethtool version 1.6 only supports a limited set of ethtool options.
+        Support for a more complete ethtool feature set can be enabled by
+        upgrading to the latest version.
 
 
   NAPI

Documentation/networking/ixgbe.txt

@@ -1,107 +1,126 @@
 Linux Base Driver for 10 Gigabit PCI Express Intel(R) Network Connection
 ========================================================================
 
-March 10, 2009
-
+Intel Gigabit Linux driver.
+Copyright(c) 1999 - 2010 Intel Corporation.
 
 Contents
 ========
 
-- In This Release
 - Identifying Your Adapter
-- Building and Installation
 - Additional Configurations
+- Performance Tuning
+- Known Issues
 - Support
 
+Identifying Your Adapter
+========================
 
+The driver in this release is compatible with 82598 and 82599-based Intel
+Network Connections.
 
-In This Release
-===============
+For more information on how to identify your adapter, go to the Adapter &
+Driver ID Guide at:
 
-This file describes the ixgbe Linux Base Driver for the 10 Gigabit PCI
-Express Intel(R) Network Connection.  This driver includes support for
-Itanium(R)2-based systems.
+    http://support.intel.com/support/network/sb/CS-012904.htm
 
-For questions related to hardware requirements, refer to the documentation
-supplied with your 10 Gigabit adapter.  All hardware requirements listed apply
-to use with Linux.
+SFP+ Devices with Pluggable Optics
+----------------------------------
 
-The following features are available in this kernel:
- - Native VLANs
- - Channel Bonding (teaming)
- - SNMP
- - Generic Receive Offload
- - Data Center Bridging
+82599-BASED ADAPTERS
 
-Channel Bonding documentation can be found in the Linux kernel source:
-/Documentation/networking/bonding.txt
+NOTES: If your 82599-based Intel(R) Network Adapter came with Intel optics, or
+is an Intel(R) Ethernet Server Adapter X520-2, then it only supports Intel
+optics and/or the direct attach cables listed below.
 
-Ethtool, lspci, and ifconfig can be used to display device and driver
-specific information.
+When 82599-based SFP+ devices are connected back to back, they should be set to
+the same Speed setting via ethtool. Results may vary if you mix speed settings.
+82598-based adapters support all passive direct attach cables that comply
+with SFF-8431 v4.1 and SFF-8472 v10.4 specifications. Active direct attach
+cables are not supported.
 
+Supplier    Type                                             Part Numbers
 
-Identifying Your Adapter
-========================
+SR Modules
+Intel       DUAL RATE 1G/10G SFP+ SR (bailed)                FTLX8571D3BCV-IT
+Intel       DUAL RATE 1G/10G SFP+ SR (bailed)                AFBR-703SDDZ-IN1
+Intel       DUAL RATE 1G/10G SFP+ SR (bailed)                AFBR-703SDZ-IN2
+LR Modules
+Intel       DUAL RATE 1G/10G SFP+ LR (bailed)                FTLX1471D3BCV-IT
+Intel       DUAL RATE 1G/10G SFP+ LR (bailed)                AFCT-701SDDZ-IN1
+Intel       DUAL RATE 1G/10G SFP+ LR (bailed)                AFCT-701SDZ-IN2
 
-This driver supports devices based on the 82598 controller and the 82599
-controller.
+The following is a list of 3rd party SFP+ modules and direct attach cables that
+have received some testing. Not all modules are applicable to all devices.
 
-For specific information on identifying which adapter you have, please visit:
+Supplier   Type                                              Part Numbers
 
-    http://support.intel.com/support/network/sb/CS-008441.htm
+Finisar    SFP+ SR bailed, 10g single rate                   FTLX8571D3BCL
+Avago      SFP+ SR bailed, 10g single rate                   AFBR-700SDZ
+Finisar    SFP+ LR bailed, 10g single rate                   FTLX1471D3BCL
 
+Finisar    DUAL RATE 1G/10G SFP+ SR (No Bail)                FTLX8571D3QCV-IT
+Avago      DUAL RATE 1G/10G SFP+ SR (No Bail)                AFBR-703SDZ-IN1
+Finisar    DUAL RATE 1G/10G SFP+ LR (No Bail)                FTLX1471D3QCV-IT
+Avago      DUAL RATE 1G/10G SFP+ LR (No Bail)                AFCT-701SDZ-IN1
+Finistar   1000BASE-T SFP                                    FCLF8522P2BTL
+Avago      1000BASE-T SFP                                    ABCU-5710RZ
 
-Building and Installation
-=========================
+82599-based adapters support all passive and active limiting direct attach
+cables that comply with SFF-8431 v4.1 and SFF-8472 v10.4 specifications.
 
-select m for "Intel(R) 10GbE PCI Express adapters support" located at:
-      Location:
-        -> Device Drivers
-          -> Network device support (NETDEVICES [=y])
-            -> Ethernet (10000 Mbit) (NETDEV_10000 [=y])
+Laser turns off for SFP+ when ifconfig down
+-------------------------------------------
+"ifconfig down" turns off the laser for 82599-based SFP+ fiber adapters.
+"ifconfig up" turns on the later.
 
-1. make modules & make modules_install
 
-2. Load the module:
+82598-BASED ADAPTERS
 
-# modprobe ixgbe
+NOTES for 82598-Based Adapters:
+- Intel(R) Network Adapters that support removable optical modules only support
+  their original module type (i.e., the Intel(R) 10 Gigabit SR Dual Port
+  Express Module only supports SR optical modules). If you plug in a different
+  type of module, the driver will not load.
+- Hot Swapping/hot plugging optical modules is not supported.
+- Only single speed, 10 gigabit modules are supported.
+- LAN on Motherboard (LOMs) may support DA, SR, or LR modules. Other module
+  types are not supported. Please see your system documentation for details.
 
-   The insmod command can be used if the full
-   path to the driver module is specified.  For example:
+The following is a list of 3rd party SFP+ modules and direct attach cables that
+have received some testing. Not all modules are applicable to all devices.
 
-     insmod /lib/modules/<KERNEL VERSION>/kernel/drivers/net/ixgbe/ixgbe.ko
+Supplier   Type                                              Part Numbers
 
-   With 2.6 based kernels also make sure that older ixgbe drivers are
-   removed from the kernel, before loading the new module:
+Finisar    SFP+ SR bailed, 10g single rate                   FTLX8571D3BCL
+Avago      SFP+ SR bailed, 10g single rate                   AFBR-700SDZ
+Finisar    SFP+ LR bailed, 10g single rate                   FTLX1471D3BCL
 
-     rmmod ixgbe; modprobe ixgbe
+82598-based adapters support all passive direct attach cables that comply
+with SFF-8431 v4.1 and SFF-8472 v10.4 specifications. Active direct attach
+cables are not supported.
 
-3. Assign an IP address to the interface by entering the following, where
-   x is the interface number:
 
-     ifconfig ethx <IP_address>
+Flow Control
+------------
+Ethernet Flow Control (IEEE 802.3x) can be configured with ethtool to enable
+receiving and transmitting pause frames for ixgbe. When TX is enabled, PAUSE
+frames are generated when the receive packet buffer crosses a predefined
+threshold.  When rx is enabled, the transmit unit will halt for the time delay
+specified when a PAUSE frame is received.
 
-4. Verify that the interface works. Enter the following, where <IP_address>
-   is the IP address for another machine on the same subnet as the interface
-   that is being tested:
+Flow Control is enabled by default. If you want to disable a flow control
+capable link partner, use ethtool:
 
-     ping  <IP_address>
+     ethtool -A eth? autoneg off RX off TX off
 
+NOTE: For 82598 backplane cards entering 1 gig mode, flow control default
+behavior is changed to off.  Flow control in 1 gig mode on these devices can
+lead to Tx hangs.
 
 Additional Configurations
 =========================
 
-  Viewing Link Messages
-  ---------------------
-  Link messages will not be displayed to the console if the distribution is
-  restricting system messages. In order to see network driver link messages on
-  your console, set dmesg to eight by entering the following:
-
-       dmesg -n 8
-
-  NOTE: This setting is not saved across reboots.
-
-
   Jumbo Frames
   ------------
   The driver supports Jumbo Frames for all adapters. Jumbo Frames support is
@@ -123,13 +142,8 @@ Additional Configurations
   other protocols besides TCP.  It's also safe to use with configurations that
   are problematic for LRO, namely bridging and iSCSI.
 
-  GRO is enabled by default in the driver.  Future versions of ethtool will
-  support disabling and re-enabling GRO on the fly.
-
-
   Data Center Bridging, aka DCB
   -----------------------------
-
   DCB is a configuration Quality of Service implementation in hardware.
   It uses the VLAN priority tag (802.1p) to filter traffic.  That means
   that there are 8 different priorities that traffic can be filtered into.
@@ -163,24 +177,71 @@ Additional Configurations
 
         http://e1000.sf.net
 
-
   Ethtool
   -------
   The driver utilizes the ethtool interface for driver configuration and
-  diagnostics, as well as displaying statistical information.  Ethtool
-  version 3.0 or later is required for this functionality.
+  diagnostics, as well as displaying statistical information. The latest
+  ethtool version is required for this functionality.
 
   The latest release of ethtool can be found from
-  http://sourceforge.net/projects/gkernel.
+  http://ftp.kernel.org/pub/software/network/ethtool/
 
-
-  NAPI
+  FCoE
   ----
+  This release of the ixgbe driver contains new code to enable users to use
+  Fiber Channel over Ethernet (FCoE) and Data Center Bridging (DCB)
+  functionality that is supported by the 82598-based hardware.  This code has
+  no default effect on the regular driver operation, and configuring DCB and
+  FCoE is outside the scope of this driver README. Refer to
+  http://www.open-fcoe.org/ for FCoE project information and contact
+  e1000-eedc@lists.sourceforge.net for DCB information.
+
+  MAC and VLAN anti-spoofing feature
+  ----------------------------------
+  When a malicious driver attempts to send a spoofed packet, it is dropped by
+  the hardware and not transmitted.  An interrupt is sent to the PF driver
+  notifying it of the spoof attempt.
+
+  When a spoofed packet is detected the PF driver will send the following
+  message to the system log (displayed by  the "dmesg" command):
+
+  Spoof event(s) detected on VF (n)
+
+  Where n=the VF that attempted to do the spoofing.
+
+
+Performance Tuning
+==================
+
+An excellent article on performance tuning can be found at:
+
+http://www.redhat.com/promo/summit/2008/downloads/pdf/Thursday/Mark_Wagner.pdf
+
+
+Known Issues
+============
+
+  Enabling SR-IOV in a 32-bit Microsoft* Windows* Server 2008 Guest OS using
+  Intel (R) 82576-based GbE or Intel (R) 82599-based 10GbE controller under KVM
+  -----------------------------------------------------------------------------
+  KVM Hypervisor/VMM supports direct assignment of a PCIe device to a VM.  This
+  includes traditional PCIe devices, as well as SR-IOV-capable devices using
+  Intel 82576-based and 82599-based controllers.
+
+  While direct assignment of a PCIe device or an SR-IOV Virtual Function (VF)
+  to a Linux-based VM running 2.6.32 or later kernel works fine, there is a
+  known issue with Microsoft Windows Server 2008 VM that results in a "yellow
+  bang" error. This problem is within the KVM VMM itself, not the Intel driver,
+  or the SR-IOV logic of the VMM, but rather that KVM emulates an older CPU
+  model for the guests, and this older CPU model does not support MSI-X
+  interrupts, which is a requirement for Intel SR-IOV.
 
-  NAPI (Rx polling mode) is supported in the ixgbe driver.  NAPI is enabled
-  by default in the driver.
+  If you wish to use the Intel 82576 or 82599-based controllers in SR-IOV mode
+  with KVM and a Microsoft Windows Server 2008 guest try the following
+  workaround. The workaround is to tell KVM to emulate a different model of CPU
+  when using qemu to create the KVM guest:
 
-  See www.cyberus.ca/~hadi/usenix-paper.tgz for more information on NAPI.
+       "-cpu qemu64,model=13"
 
 
 Support

Documentation/networking/ixgbevf.txt

@@ -35,10 +35,6 @@ Driver ID Guide at:
 Known Issues/Troubleshooting
 ============================
 
-  Unloading Physical Function (PF) Driver Causes System Reboots When VM is
-  Running and VF is Loaded on the VM
-  ------------------------------------------------------------------------
-  Do not unload the PF driver (ixgbe) while VFs are assigned to guests.
 
 Support
 =======

Documentation/networking/stmmac.txt

@@ -7,7 +7,7 @@ This is the driver for the MAC 10/100/1000 on-chip Ethernet controllers
 (Synopsys IP blocks); it has been fully tested on STLinux platforms.
 
 Currently this network device driver is for all STM embedded MAC/GMAC
-(7xxx SoCs).
+(7xxx SoCs). Other platforms start using it i.e. ARM SPEAr.
 
 DWC Ether MAC 10/100/1000 Universal version 3.41a and DWC Ether MAC 10/100
 Universal version 4.0 have been used for developing the first code
@@ -95,9 +95,14 @@ Several information came from the platform; please refer to the
 driver's Header file in include/linux directory.
 
 struct plat_stmmacenet_data {
-        int bus_id;
-        int pbl;
-        int has_gmac;
+	int bus_id;
+	int pbl;
+	int clk_csr;
+	int has_gmac;
+	int enh_desc;
+	int tx_coe;
+	int bugged_jumbo;
+	int pmt;
         void (*fix_mac_speed)(void *priv, unsigned int speed);
         void (*bus_setup)(unsigned long ioaddr);
 #ifdef CONFIG_STM_DRIVERS
@@ -114,6 +119,12 @@ Where:
   registers (on STM platforms);
 - has_gmac: GMAC core is on board (get it at run-time in the next step);
 - bus_id: bus identifier.
+- tx_coe: core is able to perform the tx csum in HW.
+- enh_desc: if sets the MAC will use the enhanced descriptor structure.
+- clk_csr: CSR Clock range selection.
+- bugged_jumbo: some HWs are not able to perform the csum in HW for
+  over-sized frames due to limited buffer sizes. Setting this
+  flag the csum will be done in SW on JUMBO frames.
 
 struct plat_stmmacphy_data {
         int bus_id;
@@ -131,13 +142,28 @@ Where:
 - interface: physical MII interface mode;
 - phy_reset: hook to reset HW function.
 
+SOURCES:
+- Kconfig
+- Makefile
+- stmmac_main.c: main network device driver;
+- stmmac_mdio.c: mdio functions;
+- stmmac_ethtool.c: ethtool support;
+- stmmac_timer.[ch]: timer code used for mitigating the driver dma interrupts
+  Only tested on ST40 platforms based.
+- stmmac.h: private driver structure;
+- common.h: common definitions and VFTs;
+- descs.h: descriptor structure definitions;
+- dwmac1000_core.c: GMAC core functions;
+- dwmac1000_dma.c:  dma functions for the GMAC chip;
+- dwmac1000.h: specific header file for the GMAC;
+- dwmac100_core: MAC 100 core and dma code;
+- dwmac100_dma.c: dma funtions for the MAC chip;
+- dwmac1000.h: specific header file for the MAC;
+- dwmac_lib.c: generic DMA functions shared among chips
+- enh_desc.c: functions for handling enhanced descriptors
+- norm_desc.c: functions for handling normal descriptors
+
 TODO:
-- Continue to make the driver more generic and suitable for other Synopsys
-  Ethernet controllers used on other architectures (i.e. ARM).
-- 10G controllers are not supported.
-- MAC uses Normal descriptors and GMAC uses enhanced ones.
-  This is a limit that should be reviewed. MAC could want to
-  use the enhanced structure.
-- Checksumming: Rx/Tx csum is done in HW in case of GMAC only.
+- XGMAC controller is not supported.
 - Review the timer optimisation code to use an embedded device that seems to be
   available in new chip generations.

Documentation/power/opp.txt

@@ -37,6 +37,9 @@ Typical usage of the OPP library is as follows:
 SoC framework	-> modifies on required cases certain OPPs	-> OPP layer
 		-> queries to search/retrieve information	->
 
+Architectures that provide a SoC framework for OPP should select ARCH_HAS_OPP
+to make the OPP layer available.
+
 OPP layer expects each domain to be represented by a unique device pointer. SoC
 framework registers a set of initial OPPs per device with the OPP layer. This
 list is expected to be an optimally small number typically around 5 per device.

Documentation/power/runtime_pm.txt

@@ -379,8 +379,8 @@ drivers/base/power/runtime.c and include/linux/pm_runtime.h:
       zero)
 
   bool pm_runtime_suspended(struct device *dev);
-    - return true if the device's runtime PM status is 'suspended', or false
-      otherwise
+    - return true if the device's runtime PM status is 'suspended' and its
+      'power.disable_depth' field is equal to zero, or false otherwise
 
   void pm_runtime_allow(struct device *dev);
     - set the power.runtime_auto flag for the device and decrease its usage

Documentation/rbtree.txt

@@ -21,8 +21,8 @@ three rotations, respectively, to balance the tree), with slightly slower
 To quote Linux Weekly News:
 
     There are a number of red-black trees in use in the kernel.
-    The anticipatory, deadline, and CFQ I/O schedulers all employ
-    rbtrees to track requests; the packet CD/DVD driver does the same.
+    The deadline and CFQ I/O schedulers employ rbtrees to
+    track requests; the packet CD/DVD driver does the same.
     The high-resolution timer code uses an rbtree to organize outstanding
     timer requests.  The ext3 filesystem tracks directory entries in a
     red-black tree.  Virtual memory areas (VMAs) are tracked with red-black

Documentation/scsi/ChangeLog.megaraid_sas

@@ -1,3 +1,25 @@
+Release Date    : Tues.  Dec 14, 2010 17:00:00 PST 2010 -
+			(emaild-id:megaraidlinux@lsi.com)
+			Adam Radford
+Current Version : 00.00.05.29-rc1
+Old Version     : 00.00.04.31-rc1
+    1. Rename megaraid_sas.c to megaraid_sas_base.c.
+    2. Update GPL headers.
+    3. Add MSI-X support and 'msix_disable' module parameter.
+    4. Use lowest memory bar (for SR-IOV VF support).
+    5. Add struct megasas_instance_temlate changes, and change all code to use
+       new instance entries:
+
+       irqreturn_t (*service_isr )(int irq, void *devp);
+       void (*tasklet)(unsigned long);
+       u32 (*init_adapter)(struct megasas_instance *);
+       u32 (*build_and_issue_cmd) (struct megasas_instance *,
+       struct scsi_cmnd *);
+       void (*issue_dcmd) (struct megasas_instance *instance,
+                              struct megasas_cmd *cmd);
+
+   6. Add code to support MegaRAID 9265/9285 controllers device id (0x5b).
+-------------------------------------------------------------------------------
 1 Release Date    : Thur.  May 03, 2010 09:12:45 PST 2009 -
 			(emaild-id:megaraidlinux@lsi.com)
 			Bo Yang

Documentation/scsi/scsi_mid_low_api.txt

@@ -1044,9 +1044,9 @@ Details:
 
 
 /**
- *      queuecommand - queue scsi command, invoke 'done' on completion
+ *      queuecommand - queue scsi command, invoke scp->scsi_done on completion
+ *      @shost: pointer to the scsi host object
  *      @scp: pointer to scsi command object
- *      @done: function pointer to be invoked on completion
  *
  *      Returns 0 on success.
  *
@@ -1074,42 +1074,45 @@ Details:
  *
  *      Other types of errors that are detected immediately may be
  *      flagged by setting scp->result to an appropriate value,
- *      invoking the 'done' callback, and then returning 0 from this
- *      function. If the command is not performed immediately (and the
- *      LLD is starting (or will start) the given command) then this
- *      function should place 0 in scp->result and return 0.
+ *      invoking the scp->scsi_done callback, and then returning 0
+ *      from this function. If the command is not performed
+ *      immediately (and the LLD is starting (or will start) the given
+ *      command) then this function should place 0 in scp->result and
+ *      return 0.
  *
  *      Command ownership.  If the driver returns zero, it owns the
- *      command and must take responsibility for ensuring the 'done'
- *      callback is executed.  Note: the driver may call done before
- *      returning zero, but after it has called done, it may not
- *      return any value other than zero.  If the driver makes a
- *      non-zero return, it must not execute the command's done
- *      callback at any time.
- *
- *      Locks: struct Scsi_Host::host_lock held on entry (with "irqsave")
- *             and is expected to be held on return.
+ *      command and must take responsibility for ensuring the
+ *      scp->scsi_done callback is executed.  Note: the driver may
+ *      call scp->scsi_done before returning zero, but after it has
+ *      called scp->scsi_done, it may not return any value other than
+ *      zero.  If the driver makes a non-zero return, it must not
+ *      execute the command's scsi_done callback at any time.
+ *
+ *      Locks: up to and including 2.6.36, struct Scsi_Host::host_lock
+ *             held on entry (with "irqsave") and is expected to be
+ *             held on return. From 2.6.37 onwards, queuecommand is
+ *             called without any locks held.
  *
  *      Calling context: in interrupt (soft irq) or process context
  *
- *      Notes: This function should be relatively fast. Normally it will
- *      not wait for IO to complete. Hence the 'done' callback is invoked 
- *      (often directly from an interrupt service routine) some time after
- *      this function has returned. In some cases (e.g. pseudo adapter 
- *      drivers that manufacture the response to a SCSI INQUIRY)
- *      the 'done' callback may be invoked before this function returns.
- *      If the 'done' callback is not invoked within a certain period
- *      the SCSI mid level will commence error processing.
- *      If a status of CHECK CONDITION is placed in "result" when the
- *      'done' callback is invoked, then the LLD driver should 
- *      perform autosense and fill in the struct scsi_cmnd::sense_buffer
+ *      Notes: This function should be relatively fast. Normally it
+ *      will not wait for IO to complete. Hence the scp->scsi_done
+ *      callback is invoked (often directly from an interrupt service
+ *      routine) some time after this function has returned. In some
+ *      cases (e.g. pseudo adapter drivers that manufacture the
+ *      response to a SCSI INQUIRY) the scp->scsi_done callback may be
+ *      invoked before this function returns.  If the scp->scsi_done
+ *      callback is not invoked within a certain period the SCSI mid
+ *      level will commence error processing.  If a status of CHECK
+ *      CONDITION is placed in "result" when the scp->scsi_done
+ *      callback is invoked, then the LLD driver should perform
+ *      autosense and fill in the struct scsi_cmnd::sense_buffer
  *      array. The scsi_cmnd::sense_buffer array is zeroed prior to
  *      the mid level queuing a command to an LLD.
  *
  *      Defined in: LLD
  **/
-    int queuecommand(struct scsi_cmnd * scp, 
-                     void (*done)(struct scsi_cmnd *))
+    int queuecommand(struct Scsi_Host *shost, struct scsi_cmnd * scp)
 
 
 /**

Documentation/serial/00-INDEX

@@ -14,6 +14,8 @@ riscom8.txt
 	- notes on using the RISCom/8 multi-port serial driver.
 rocket.txt
 	- info on the Comtrol RocketPort multiport serial driver.
+serial-rs485.txt
+	- info about RS485 structures and support in the kernel.
 specialix.txt
 	- info on hardware/driver for specialix IO8+ multiport serial card.
 stallion.txt

Documentation/serial/serial-rs485.txt

@@ -0,0 +1,120 @@
+                        RS485 SERIAL COMMUNICATIONS
+
+1. INTRODUCTION
+
+   EIA-485, also known as TIA/EIA-485 or RS-485, is a standard defining the
+   electrical characteristics of drivers and receivers for use in balanced
+   digital multipoint systems.
+   This standard is widely used for communications in industrial automation
+   because it can be used effectively over long distances and in electrically
+   noisy environments.
+
+2. HARDWARE-RELATED CONSIDERATIONS
+
+   Some CPUs/UARTs (e.g., Atmel AT91 or 16C950 UART) contain a built-in
+   half-duplex mode capable of automatically controlling line direction by
+   toggling RTS or DTR signals. That can be used to control external
+   half-duplex hardware like an RS485 transceiver or any RS232-connected
+   half-duplex devices like some modems.
+
+   For these microcontrollers, the Linux driver should be made capable of
+   working in both modes, and proper ioctls (see later) should be made
+   available at user-level to allow switching from one mode to the other, and
+   vice versa.
+
+3. DATA STRUCTURES ALREADY AVAILABLE IN THE KERNEL
+
+   The Linux kernel provides the serial_rs485 structure (see [1]) to handle
+   RS485 communications. This data structure is used to set and configure RS485
+   parameters in the platform data and in ioctls.
+
+   Any driver for devices capable of working both as RS232 and RS485 should
+   provide at least the following ioctls:
+
+    - TIOCSRS485 (typically associated with number 0x542F). This ioctl is used
+      to enable/disable RS485 mode from user-space
+
+    - TIOCGRS485 (typically associated with number 0x542E). This ioctl is used
+      to get RS485 mode from kernel-space (i.e., driver) to user-space.
+
+   In other words, the serial driver should contain a code similar to the next
+   one:
+
+	static struct uart_ops atmel_pops = {
+		/* ... */
+		.ioctl		= handle_ioctl,
+	};
+
+	static int handle_ioctl(struct uart_port *port,
+		unsigned int cmd,
+		unsigned long arg)
+	{
+		struct serial_rs485 rs485conf;
+
+		switch (cmd) {
+		case TIOCSRS485:
+			if (copy_from_user(&rs485conf,
+				(struct serial_rs485 *) arg,
+				sizeof(rs485conf)))
+					return -EFAULT;
+
+			/* ... */
+			break;
+
+		case TIOCGRS485:
+			if (copy_to_user((struct serial_rs485 *) arg,
+				...,
+				sizeof(rs485conf)))
+					return -EFAULT;
+			/* ... */
+			break;
+
+		/* ... */
+		}
+	}
+
+
+4. USAGE FROM USER-LEVEL
+
+   From user-level, RS485 configuration can be get/set using the previous
+   ioctls. For instance, to set RS485 you can use the following code:
+
+	#include <linux/serial.h>
+
+	/* Driver-specific ioctls: */
+	#define TIOCGRS485      0x542E
+	#define TIOCSRS485      0x542F
+
+	/* Open your specific device (e.g., /dev/mydevice): */
+	int fd = open ("/dev/mydevice", O_RDWR);
+	if (fd < 0) {
+		/* Error handling. See errno. */
+	}
+
+	struct serial_rs485 rs485conf;
+
+	/* Set RS485 mode: */
+	rs485conf.flags |= SER_RS485_ENABLED;
+
+	/* Set rts delay before send, if needed: */
+	rs485conf.flags |= SER_RS485_RTS_BEFORE_SEND;
+	rs485conf.delay_rts_before_send = ...;
+
+	/* Set rts delay after send, if needed: */
+	rs485conf.flags |= SER_RS485_RTS_AFTER_SEND;
+	rs485conf.delay_rts_after_send = ...;
+
+	if (ioctl (fd, TIOCSRS485, &rs485conf) < 0) {
+		/* Error handling. See errno. */
+	}
+
+	/* Use read() and write() syscalls here... */
+
+	/* Close the device when finished: */
+	if (close (fd) < 0) {
+		/* Error handling. See errno. */
+	}
+
+5. REFERENCES
+
+ [1]	include/linux/serial.h

Documentation/sh/clk.txt

@@ -1,32 +0,0 @@
-Clock framework on SuperH architecture
-
-The framework on SH extends existing API by the function clk_set_rate_ex,
-which prototype is as follows:
-
-    clk_set_rate_ex (struct clk *clk, unsigned long rate, int algo_id)
-
-The algo_id parameter is used to specify algorithm used to recalculate clocks,
-adjanced to clock, specified as first argument. It is assumed that algo_id==0
-means no changes to adjanced clock
-
-Internally, the clk_set_rate_ex forwards request to clk->ops->set_rate method,
-if it is present in ops structure. The method should set the clock rate and adjust
-all needed clocks according to the passed algo_id.
-Exact values for algo_id are machine-dependent. For the sh7722, the following
-values are defined:
-
-	NO_CHANGE	= 0,
-	IUS_N1_N1,	/* I:U = N:1, U:Sh = N:1 */
-	IUS_322,	/* I:U:Sh = 3:2:2	 */
-	IUS_522,	/* I:U:Sh = 5:2:2 	 */
-	IUS_N11,	/* I:U:Sh = N:1:1	 */
-	SB_N1,		/* Sh:B = N:1		 */
-	SB3_N1,		/* Sh:B3 = N:1		 */
-	SB3_32,		/* Sh:B3 = 3:2		 */
-	SB3_43,		/* Sh:B3 = 4:3		 */
-	SB3_54,		/* Sh:B3 = 5:4		 */
-	BP_N1,		/* B:P	 = N:1		 */
-	IP_N1		/* I:P	 = N:1		 */
-
-Each of these constants means relation between clocks that can be set via the FRQCR
-register

Documentation/spi/pxa2xx

@@ -19,7 +19,7 @@ Declaring PXA2xx Master Controllers
 -----------------------------------
 Typically a SPI master is defined in the arch/.../mach-*/board-*.c as a
 "platform device".  The master configuration is passed to the driver via a table
-found in arch/arm/mach-pxa/include/mach/pxa2xx_spi.h:
+found in include/linux/spi/pxa2xx_spi.h:
 
 struct pxa2xx_spi_master {
 	enum pxa_ssp_type ssp_type;
@@ -94,7 +94,7 @@ using the "spi_board_info" structure found in "linux/spi/spi.h". See
 
 Each slave device attached to the PXA must provide slave specific configuration
 information via the structure "pxa2xx_spi_chip" found in
-"arch/arm/mach-pxa/include/mach/pxa2xx_spi.h".  The pxa2xx_spi master controller driver
+"include/linux/spi/pxa2xx_spi.h".  The pxa2xx_spi master controller driver
 will uses the configuration whenever the driver communicates with the slave
 device. All fields are optional.
 

Documentation/sysctl/kernel.txt

@@ -28,6 +28,7 @@ show up in /proc/sys/kernel:
 - core_uses_pid
 - ctrl-alt-del
 - dentry-state
+- dmesg_restrict
 - domainname
 - hostname
 - hotplug
@@ -213,6 +214,19 @@ to decide what to do with it.
 
 ==============================================================
 
+dmesg_restrict:
+
+This toggle indicates whether unprivileged users are prevented from using
+dmesg(8) to view messages from the kernel's log buffer.  When
+dmesg_restrict is set to (0) there are no restrictions.  When
+dmesg_restrict is set set to (1), users must have CAP_SYS_ADMIN to use
+dmesg(8).
+
+The kernel config option CONFIG_SECURITY_DMESG_RESTRICT sets the default
+value of dmesg_restrict.
+
+==============================================================
+
 domainname & hostname:
 
 These files can be used to set the NIS/YP domainname and the

Documentation/trace/events-power.txt

@@ -0,0 +1,90 @@
+
+			Subsystem Trace Points: power
+
+The power tracing system captures events related to power transitions
+within the kernel. Broadly speaking there are three major subheadings:
+
+  o Power state switch which reports events related to suspend (S-states),
+     cpuidle (C-states) and cpufreq (P-states)
+  o System clock related changes
+  o Power domains related changes and transitions
+
+This document describes what each of the tracepoints is and why they
+might be useful.
+
+Cf. include/trace/events/power.h for the events definitions.
+
+1. Power state switch events
+============================
+
+1.1 New trace API
+-----------------
+
+A 'cpu' event class gathers the CPU-related events: cpuidle and
+cpufreq.
+
+cpu_idle		"state=%lu cpu_id=%lu"
+cpu_frequency		"state=%lu cpu_id=%lu"
+
+A suspend event is used to indicate the system going in and out of the
+suspend mode:
+
+machine_suspend		"state=%lu"
+
+
+Note: the value of '-1' or '4294967295' for state means an exit from the current state,
+i.e. trace_cpu_idle(4, smp_processor_id()) means that the system
+enters the idle state 4, while trace_cpu_idle(PWR_EVENT_EXIT, smp_processor_id())
+means that the system exits the previous idle state.
+
+The event which has 'state=4294967295' in the trace is very important to the user
+space tools which are using it to detect the end of the current state, and so to
+correctly draw the states diagrams and to calculate accurate statistics etc.
+
+1.2 DEPRECATED trace API
+------------------------
+
+A new Kconfig option CONFIG_EVENT_POWER_TRACING_DEPRECATED with the default value of
+'y' has been created. This allows the legacy trace power API to be used conjointly
+with the new trace API.
+The Kconfig option, the old trace API (in include/trace/events/power.h) and the
+old trace points will disappear in a future release (namely 2.6.41).
+
+power_start		"type=%lu state=%lu cpu_id=%lu"
+power_frequency		"type=%lu state=%lu cpu_id=%lu"
+power_end		"cpu_id=%lu"
+
+The 'type' parameter takes one of those macros:
+ . POWER_NONE	= 0,
+ . POWER_CSTATE	= 1,	/* C-State */
+ . POWER_PSTATE	= 2,	/* Fequency change or DVFS */
+
+The 'state' parameter is set depending on the type:
+ . Target C-state for type=POWER_CSTATE,
+ . Target frequency for type=POWER_PSTATE,
+
+power_end is used to indicate the exit of a state, corresponding to the latest
+power_start event.
+
+2. Clocks events
+================
+The clock events are used for clock enable/disable and for
+clock rate change.
+
+clock_enable		"%s state=%lu cpu_id=%lu"
+clock_disable		"%s state=%lu cpu_id=%lu"
+clock_set_rate		"%s state=%lu cpu_id=%lu"
+
+The first parameter gives the clock name (e.g. "gpio1_iclk").
+The second parameter is '1' for enable, '0' for disable, the target
+clock rate for set_rate.
+
+3. Power domains events
+=======================
+The power domain events are used for power domains transitions
+
+power_domain_target	"%s state=%lu cpu_id=%lu"
+
+The first parameter gives the power domain name (e.g. "mpu_pwrdm").
+The second parameter is the power domain target state.
+

Documentation/trace/postprocess/trace-vmscan-postprocess.pl

@@ -373,9 +373,18 @@ EVENT_PROCESS:
 				print "         $regex_lru_isolate/o\n";
 				next;
 			}
+			my $isolate_mode = $1;
 			my $nr_scanned = $4;
 			my $nr_contig_dirty = $7;
-			$perprocesspid{$process_pid}->{HIGH_NR_SCANNED} += $nr_scanned;
+
+			# To closer match vmstat scanning statistics, only count isolate_both
+			# and isolate_inactive as scanning. isolate_active is rotation
+			# isolate_inactive == 0
+			# isolate_active   == 1
+			# isolate_both     == 2
+			if ($isolate_mode != 1) {
+				$perprocesspid{$process_pid}->{HIGH_NR_SCANNED} += $nr_scanned;
+			}
 			$perprocesspid{$process_pid}->{HIGH_NR_CONTIG_DIRTY} += $nr_contig_dirty;
 		} elsif ($tracepoint eq "mm_vmscan_lru_shrink_inactive") {
 			$details = $5;

Documentation/usb/power-management.txt

@@ -2,7 +2,7 @@
 
 		 Alan Stern <stern@rowland.harvard.edu>
 
-			    December 11, 2009
+			    October 28, 2010
 
 
 
@@ -107,9 +107,14 @@ allowed to issue dynamic suspends.
 The user interface for controlling dynamic PM is located in the power/
 subdirectory of each USB device's sysfs directory, that is, in
 /sys/bus/usb/devices/.../power/ where "..." is the device's ID.  The
-relevant attribute files are: wakeup, control, and autosuspend.
-(There may also be a file named "level"; this file was deprecated
-as of the 2.6.35 kernel and replaced by the "control" file.)
+relevant attribute files are: wakeup, control, and
+autosuspend_delay_ms.  (There may also be a file named "level"; this
+file was deprecated as of the 2.6.35 kernel and replaced by the
+"control" file.  In 2.6.38 the "autosuspend" file will be deprecated
+and replaced by the "autosuspend_delay_ms" file.  The only difference
+is that the newer file expresses the delay in milliseconds whereas the
+older file uses seconds.  Confusingly, both files are present in 2.6.37
+but only "autosuspend" works.)
 
 	power/wakeup
 
@@ -140,33 +145,36 @@ as of the 2.6.35 kernel and replaced by the "control" file.)
 		suspended and autoresume was not allowed.  This
 		setting is no longer supported.)
 
-	power/autosuspend
+	power/autosuspend_delay_ms
 
 		This file contains an integer value, which is the
-		number of seconds the device should remain idle before
-		the kernel will autosuspend it (the idle-delay time).
-		The default is 2.  0 means to autosuspend as soon as
-		the device becomes idle, and negative values mean
-		never to autosuspend.  You can write a number to the
-		file to change the autosuspend idle-delay time.
-
-Writing "-1" to power/autosuspend and writing "on" to power/control do
-essentially the same thing -- they both prevent the device from being
-autosuspended.  Yes, this is a redundancy in the API.
+		number of milliseconds the device should remain idle
+		before the kernel will autosuspend it (the idle-delay
+		time).  The default is 2000.  0 means to autosuspend
+		as soon as the device becomes idle, and negative
+		values mean never to autosuspend.  You can write a
+		number to the file to change the autosuspend
+		idle-delay time.
+
+Writing "-1" to power/autosuspend_delay_ms and writing "on" to
+power/control do essentially the same thing -- they both prevent the
+device from being autosuspended.  Yes, this is a redundancy in the
+API.
 
 (In 2.6.21 writing "0" to power/autosuspend would prevent the device
 from being autosuspended; the behavior was changed in 2.6.22.  The
 power/autosuspend attribute did not exist prior to 2.6.21, and the
 power/level attribute did not exist prior to 2.6.22.  power/control
-was added in 2.6.34.)
+was added in 2.6.34, and power/autosuspend_delay_ms was added in
+2.6.37 but did not become functional until 2.6.38.)
 
 
 	Changing the default idle-delay time
 	------------------------------------
 
-The default autosuspend idle-delay time is controlled by a module
-parameter in usbcore.  You can specify the value when usbcore is
-loaded.  For example, to set it to 5 seconds instead of 2 you would
+The default autosuspend idle-delay time (in seconds) is controlled by
+a module parameter in usbcore.  You can specify the value when usbcore
+is loaded.  For example, to set it to 5 seconds instead of 2 you would
 do:
 
 	modprobe usbcore autosuspend=5
@@ -234,25 +242,23 @@ every device.
 
 If a driver knows that its device has proper suspend/resume support,
 it can enable autosuspend all by itself.  For example, the video
-driver for a laptop's webcam might do this, since these devices are
-rarely used and so should normally be autosuspended.
+driver for a laptop's webcam might do this (in recent kernels they
+do), since these devices are rarely used and so should normally be
+autosuspended.
 
 Sometimes it turns out that even when a device does work okay with
-autosuspend there are still problems.  For example, there are
-experimental patches adding autosuspend support to the usbhid driver,
-which manages keyboards and mice, among other things.  Tests with a
-number of keyboards showed that typing on a suspended keyboard, while
-causing the keyboard to do a remote wakeup all right, would
-nonetheless frequently result in lost keystrokes.  Tests with mice
-showed that some of them would issue a remote-wakeup request in
-response to button presses but not to motion, and some in response to
-neither.
+autosuspend there are still problems.  For example, the usbhid driver,
+which manages keyboards and mice, has autosuspend support.  Tests with
+a number of keyboards show that typing on a suspended keyboard, while
+causing the keyboard to do a remote wakeup all right, will nonetheless
+frequently result in lost keystrokes.  Tests with mice show that some
+of them will issue a remote-wakeup request in response to button
+presses but not to motion, and some in response to neither.
 
 The kernel will not prevent you from enabling autosuspend on devices
 that can't handle it.  It is even possible in theory to damage a
-device by suspending it at the wrong time -- for example, suspending a
-USB hard disk might cause it to spin down without parking the heads.
-(Highly unlikely, but possible.)  Take care.
+device by suspending it at the wrong time.  (Highly unlikely, but
+possible.)  Take care.
 
 
 	The driver interface for Power Management
@@ -336,10 +342,6 @@ autosuspend the interface's device.  When the usage counter is = 0
 then the interface is considered to be idle, and the kernel may
 autosuspend the device.
 
-(There is a similar usage counter field in struct usb_device,
-associated with the device itself rather than any of its interfaces.
-This counter is used only by the USB core.)
-
 Drivers need not be concerned about balancing changes to the usage
 counter; the USB core will undo any remaining "get"s when a driver
 is unbound from its interface.  As a corollary, drivers must not call
@@ -409,11 +411,11 @@ during autosuspend.  For example, there's not much point
 autosuspending a keyboard if the user can't cause the keyboard to do a
 remote wakeup by typing on it.  If the driver sets
 intf->needs_remote_wakeup to 1, the kernel won't autosuspend the
-device if remote wakeup isn't available or has been disabled through
-the power/wakeup attribute.  (If the device is already autosuspended,
-though, setting this flag won't cause the kernel to autoresume it.
-Normally a driver would set this flag in its probe method, at which
-time the device is guaranteed not to be autosuspended.)
+device if remote wakeup isn't available.  (If the device is already
+autosuspended, though, setting this flag won't cause the kernel to
+autoresume it.  Normally a driver would set this flag in its probe
+method, at which time the device is guaranteed not to be
+autosuspended.)
 
 If a driver does its I/O asynchronously in interrupt context, it
 should call usb_autopm_get_interface_async() before starting output and
@@ -422,20 +424,19 @@ it receives an input event, it should call
 
 	usb_mark_last_busy(struct usb_device *udev);
 
-in the event handler.  This sets udev->last_busy to the current time.
-udev->last_busy is the field used for idle-delay calculations;
-updating it will cause any pending autosuspend to be moved back.  Most
-of the usb_autopm_* routines will also set the last_busy field to the
-current time.
+in the event handler.  This tells the PM core that the device was just
+busy and therefore the next autosuspend idle-delay expiration should
+be pushed back.  Many of the usb_autopm_* routines also make this call,
+so drivers need to worry only when interrupt-driven input arrives.
 
 Asynchronous operation is always subject to races.  For example, a
-driver may call one of the usb_autopm_*_interface_async() routines at
-a time when the core has just finished deciding the device has been
-idle for long enough but not yet gotten around to calling the driver's
-suspend method.  The suspend method must be responsible for
-synchronizing with the output request routine and the URB completion
-handler; it should cause autosuspends to fail with -EBUSY if the
-driver needs to use the device.
+driver may call the usb_autopm_get_interface_async() routine at a time
+when the core has just finished deciding the device has been idle for
+long enough but not yet gotten around to calling the driver's suspend
+method.  The suspend method must be responsible for synchronizing with
+the I/O request routine and the URB completion handler; it should
+cause autosuspends to fail with -EBUSY if the driver needs to use the
+device.
 
 External suspend calls should never be allowed to fail in this way,
 only autosuspend calls.  The driver can tell them apart by checking
@@ -472,7 +473,9 @@ Firstly, a device may already be autosuspended when a system suspend
 occurs.  Since system suspends are supposed to be as transparent as
 possible, the device should remain suspended following the system
 resume.  But this theory may not work out well in practice; over time
-the kernel's behavior in this regard has changed.
+the kernel's behavior in this regard has changed.  As of 2.6.37 the
+policy is to resume all devices during a system resume and let them
+handle their own runtime suspends afterward.
 
 Secondly, a dynamic power-management event may occur as a system
 suspend is underway.  The window for this is short, since system

Documentation/video4linux/CARDLIST.em28xx

@@ -1,5 +1,5 @@
   0 -> Unknown EM2800 video grabber             (em2800)        [eb1a:2800]
-  1 -> Unknown EM2750/28xx video grabber        (em2820/em2840) [eb1a:2710,eb1a:2820,eb1a:2821,eb1a:2860,eb1a:2861,eb1a:2862,eb1a:2863,eb1a:2870,eb1a:2881,eb1a:2883,eb1a:2868]
+  1 -> Unknown EM2750/28xx video grabber        (em2820/em2840) [eb1a:2710,eb1a:2820,eb1a:2821,eb1a:2860,eb1a:2861,eb1a:2862,eb1a:2863,eb1a:2870,eb1a:2881,eb1a:2883,eb1a:2868,eb1a:2875]
   2 -> Terratec Cinergy 250 USB                 (em2820/em2840) [0ccd:0036]
   3 -> Pinnacle PCTV USB 2                      (em2820/em2840) [2304:0208]
   4 -> Hauppauge WinTV USB 2                    (em2820/em2840) [2040:4200,2040:4201]
@@ -9,7 +9,7 @@
   8 -> Kworld USB2800                           (em2800)
   9 -> Pinnacle Dazzle DVC 90/100/101/107 / Kaiser Baas Video to DVD maker  (em2820/em2840) [1b80:e302,1b80:e304,2304:0207,2304:021a]
  10 -> Hauppauge WinTV HVR 900                  (em2880)        [2040:6500]
- 11 -> Terratec Hybrid XS                       (em2880)        [0ccd:0042]
+ 11 -> Terratec Hybrid XS                       (em2880)
  12 -> Kworld PVR TV 2800 RF                    (em2820/em2840)
  13 -> Terratec Prodigy XS                      (em2880)        [0ccd:0047]
  14 -> SIIG AVTuner-PVR / Pixelview Prolink PlayTV USB 2.0 (em2820/em2840)
@@ -53,7 +53,7 @@
  52 -> DNT DA2 Hybrid                           (em2881)
  53 -> Pinnacle Hybrid Pro                      (em2881)
  54 -> Kworld VS-DVB-T 323UR                    (em2882)        [eb1a:e323]
- 55 -> Terratec Hybrid XS (em2882)              (em2882)        [0ccd:005e]
+ 55 -> Terratec Cinnergy Hybrid T USB XS (em2882) (em2882)        [0ccd:005e,0ccd:0042]
  56 -> Pinnacle Hybrid Pro (2)                  (em2882)        [2304:0226]
  57 -> Kworld PlusTV HD Hybrid 330              (em2883)        [eb1a:a316]
  58 -> Compro VideoMate ForYou/Stereo           (em2820/em2840) [185b:2041]

Documentation/video4linux/CARDLIST.saa7134

@@ -180,3 +180,5 @@
 179 -> Beholder BeholdTV A7                     [5ace:7090]
 180 -> Avermedia PCI M733A                      [1461:4155,1461:4255]
 181 -> TechoTrend TT-budget T-3000              [13c2:2804]
+182 -> Kworld PCI SBTVD/ISDB-T Full-Seg Hybrid  [17de:b136]
+183 -> Compro VideoMate Vista M1F               [185b:c900]

Documentation/video4linux/Makefile

@@ -1,8 +0,0 @@
-# kbuild trick to avoid linker error. Can be omitted if a module is built.
-obj- := dummy.o
-
-# List of programs to build
-hostprogs-y := v4lgrab
-
-# Tell kbuild to always build the programs
-always := $(hostprogs-y)

Documentation/video4linux/README.cpia

@@ -1,191 +0,0 @@
-This is a driver for the CPiA PPC2 driven parallel connected
-Camera. For example the Creative WebcamII is CPiA driven.
-
-   ) [1]Peter Pregler, Linz 2000, published under the [2]GNU GPL
-
----------------------------------------------------------------------------
-
-USAGE:
-
-General:
-========
-
-1) Make sure you have created the video devices (/dev/video*):
-
-- if you have a recent MAKEDEV do a 'cd /dev;./MAKEDEV video'
-- otherwise do a:
-
-cd /dev
-mknod video0 c 81 0
-ln -s video0 video
-
-2) Compile the kernel (see below for the list of options to use),
-   configure your parport and reboot.
-
-3) If all worked well you should get messages similar
-   to the following (your versions may be different) on the console:
-
-V4L-Driver for Vision CPiA based cameras v0.7.4
-parport0: read2 timeout.
-parport0: Multimedia device, VLSI Vision Ltd PPC2
-Parallel port driver for Vision CPiA based camera
-  CPIA Version: 1.20 (2.0)
-  CPIA PnP-ID: 0553:0002:0100
-  VP-Version: 1.0 0100
-  1 camera(s) found
-
-
-As modules:
-===========
-
-Make sure you have selected the following kernel options (you can
-select all stuff as modules):
-
-The cpia-stuff is in the section 'Character devices -> Video For Linux'.
-
-CONFIG_PARPORT=m
-CONFIG_PARPORT_PC=m
-CONFIG_PARPORT_PC_FIFO=y
-CONFIG_PARPORT_1284=y
-CONFIG_VIDEO_DEV=m
-CONFIG_VIDEO_CPIA=m
-CONFIG_VIDEO_CPIA_PP=m
-
-For autoloading of all those modules you need to tell module-init-tools
-some stuff. Add the following line to your module-init-tools config-file
-(e.g. /etc/modprobe.conf or wherever your distribution does store that
-stuff):
-
-options parport_pc io=0x378 irq=7 dma=3
-alias char-major-81 cpia_pp
-
-The first line tells the dma/irq channels to use. Those _must_ match
-the settings of your BIOS. Do NOT simply use the values above.  See
-Documentation/parport.txt for more information about this. The second
-line associates the video-device file with the driver. Of cause you
-can also load the modules once upon boot (usually done in /etc/modules).
-
-Linked into the kernel:
-=======================
-
-Make sure you have selected the following kernel options. Note that
-you cannot compile the parport-stuff as modules and the cpia-driver
-statically (the other way round is okay though).
-
-The cpia-stuff is in the section 'Character devices -> Video For Linux'.
-
-CONFIG_PARPORT=y
-CONFIG_PARPORT_PC=y
-CONFIG_PARPORT_PC_FIFO=y
-CONFIG_PARPORT_1284=y
-CONFIG_VIDEO_DEV=y
-CONFIG_VIDEO_CPIA=y
-CONFIG_VIDEO_CPIA_PP=y
-
-To use DMA/irq you will need to tell the kernel upon boot time the
-hardware configuration of the parport. You can give the boot-parameter
-at the LILO-prompt or specify it in lilo.conf. I use the following
-append-line in lilo.conf:
-
-	append="parport=0x378,7,3"
-
-See Documentation/parport.txt for more information about the
-configuration of the parport and the values given above. Do not simply
-use the values given above.
-
----------------------------------------------------------------------------
-FEATURES:
-
-- mmap/read v4l-interface (but no overlay)
-- image formats: CIF/QCIF, SIF/QSIF, various others used by isabel;
-  note: all sizes except CIF/QCIF are implemented by clipping, i.e.
-  pixels are not uploaded from the camera
-- palettes: VIDEO_PALETTE_GRAY, VIDEO_PALETTE_RGB565, VIDEO_PALETTE_RGB555,
-  VIDEO_PALETTE_RGB24, VIDEO_PALETTE_RGB32, VIDEO_PALETTE_YUYV,
-  VIDEO_PALETTE_UYVY, VIDEO_PALETTE_YUV422
-- state information (color balance, exposure, ...) is preserved between
-  device opens
-- complete control over camera via proc-interface (_all_ camera settings are
-  supported), there is also a python-gtk application available for this [3]
-- works under SMP (but the driver is completely serialized and synchronous)
-  so you get no benefit from SMP, but at least it does not crash your box
-- might work for non-Intel architecture, let us know about this
-
----------------------------------------------------------------------------
-TESTED APPLICATIONS:
-
-- a simple test application based on Xt is available at [3]
-- another test-application based on gqcam-0.4 (uses GTK)
-- gqcam-0.6 should work
-- xawtv-3.x (also the webcam software)
-- xawtv-2.46
-- w3cam (cgi-interface and vidcat, e.g. you may try out 'vidcat  |xv
-  -maxpect -root -quit +noresetroot -rmode 5 -')
-- vic, the MBONE video conferencing tool (version 2.8ucl4-1)
-- isabel 3R4beta (barely working, but AFAICT all the problems are on
-  their side)
-- camserv-0.40
-
-See [3] for pointers to v4l-applications.
-
----------------------------------------------------------------------------
-KNOWN PROBLEMS:
-
-- some applications do not handle the image format correctly, you will
-  see strange horizontal stripes instead of a nice picture -> make sure
-  your application does use a supported image size or queries the driver
-  for the actually used size (reason behind this: the camera cannot
-  provide any image format, so if size NxM is requested the driver will
-  use a format to the closest fitting N1xM1, the application should now
-  query for this granted size, most applications do not).
-- all the todo ;)
-- if there is not enough light and the picture is too dark try to
-  adjust the SetSensorFPS setting, automatic frame rate adjustment
-  has its price
-- do not try out isabel 3R4beta (built 135), you will be disappointed
-
----------------------------------------------------------------------------
-TODO:
-
-- multiple camera support (struct camera or something) - This should work,
-  but hasn't been tested yet.
-- architecture independence?
-- SMP-safe asynchronous mmap interface
-- nibble mode for old parport interfaces
-- streaming capture, this should give a performance gain
-
----------------------------------------------------------------------------
-IMPLEMENTATION NOTES:
-
-The camera can act in two modes, streaming or grabbing. Right now a
-polling grab-scheme is used. Maybe interrupt driven streaming will be
-used for a asynchronous mmap interface in the next major release of the
-driver. This might give a better frame rate.
-
----------------------------------------------------------------------------
-THANKS (in no particular order):
-
-- Scott J. Bertin <sbertin@mindspring.com> for cleanups, the proc-filesystem
-  and much more
-- Henry Bruce <whb@vvl.co.uk> for providing developers information about
-  the CPiA chip, I wish all companies would treat Linux as seriously
-- Karoly Erdei <Karoly.Erdei@risc.uni-linz.ac.at> and RISC-Linz for being
-  my boss ;) resp. my employer and for providing me the hardware and
-  allow me to devote some working time to this project
-- Manuel J. Petit de Gabriel <mpetit@dit.upm.es> for providing help
-  with Isabel (http://isabel.dit.upm.es/)
-- Bas Huisman <bhuism@cs.utwente.nl> for writing the initial parport code
-- Jarl Totland <Jarl.Totland@bdc.no> for setting up the mailing list
-  and maintaining the web-server[3]
-- Chris Whiteford <Chris@informinteractive.com> for fixes related to the
-  1.02 firmware
-- special kudos to all the tester whose machines crashed and/or
-  will crash. :)
-
----------------------------------------------------------------------------
-REFERENCES
-
-   1. http://www.risc.uni-linz.ac.at/
-      mailto:Peter_Pregler@email.com
-   2. see the file COPYING in the top directory of the kernel tree
-   3. http://webcam.sourceforge.net/

Documentation/video4linux/Zoran

@@ -322,76 +322,11 @@ your IRQs and make sure the card has its own interrupts.
 
 4. Programming interface
 
-This driver conforms to video4linux and video4linux2, both can be used to
-use the driver. Since video4linux didn't provide adequate calls to fully
-use the cards' features, we've introduced several programming extensions,
-which are currently officially accepted in the 2.4.x branch of the kernel.
-These extensions are known as the v4l/mjpeg extensions. See zoran.h for
-details (structs/ioctls).
-
-Information - video4linux:
-http://linux.bytesex.org/v4l2/API.html
-Documentation/video4linux/API.html
-/usr/include/linux/videodev.h
-
-Information - video4linux/mjpeg extensions:
-./zoran.h
-(also see below)
-
-Information - video4linux2:
-http://linuxtv.org
-http://v4l2spec.bytesex.org/
-/usr/include/linux/videodev2.h
-
-More information on the video4linux/mjpeg extensions, by Serguei
-Miridonovi and Rainer Johanni:
---
-The ioctls for that interface are as follows:
-
-BUZIOC_G_PARAMS
-BUZIOC_S_PARAMS
-
-Get and set the parameters of the buz. The user should always do a
-BUZIOC_G_PARAMS (with a struct buz_params) to obtain the default
-settings, change what he likes and then make a BUZIOC_S_PARAMS call.
-
-BUZIOC_REQBUFS
-
-Before being able to capture/playback, the user has to request
-the buffers he is wanting to use. Fill the structure
-zoran_requestbuffers with the size (recommended: 256*1024) and
-the number (recommended 32 up to 256). There are no such restrictions
-as for the Video for Linux buffers, you should LEAVE SUFFICIENT
-MEMORY for your system however, else strange things will happen ....
-On return, the zoran_requestbuffers structure contains number and
-size of the actually allocated buffers.
-You should use these numbers for doing a mmap of the buffers
-into the user space.
-The BUZIOC_REQBUFS ioctl also makes it happen, that the next mmap
-maps the MJPEG buffer instead of the V4L buffers.
-
-BUZIOC_QBUF_CAPT
-BUZIOC_QBUF_PLAY
-
-Queue a buffer for capture or playback. The first call also starts
-streaming capture. When streaming capture is going on, you may
-only queue further buffers or issue syncs until streaming
-capture is switched off again with a argument of -1 to
-a BUZIOC_QBUF_CAPT/BUZIOC_QBUF_PLAY ioctl.
-
-BUZIOC_SYNC
-
-Issue this ioctl when all buffers are queued. This ioctl will
-block until the first buffer becomes free for saving its
-data to disk (after BUZIOC_QBUF_CAPT) or for reuse (after BUZIOC_QBUF_PLAY).
-
-BUZIOC_G_STATUS
-
-Get the status of the input lines (video source connected/norm).
+This driver conforms to video4linux2. Support for V4L1 and for the custom
+zoran ioctls has been removed in kernel 2.6.38.
 
 For programming example, please, look at lavrec.c and lavplay.c code in
-lavtools-1.2p2 package (URL: http://www.cicese.mx/)
-and the 'examples' directory in the original Buz driver distribution.
+the MJPEG-tools (http://mjpeg.sf.net/).
 
 Additional notes for software developers:
 
@@ -402,9 +337,6 @@ Additional notes for software developers:
    standard is "more constant" for current country than geometry
    settings of a variety of TV capture cards which may work in ITU or
    square pixel format.
---
-Please note that lavplay/lavrec are also included in the MJPEG-tools
-(http://mjpeg.sf.net/).
 
 ===========================
 

Documentation/video4linux/bttv/Cards

@@ -464,10 +464,6 @@ Siemens
 -------
    Multimedia eXtension Board (MXB) (SAA7146, SAA7111)
 
-Stradis
--------
-   SDM275,SDM250,SDM026,SDM025 (SAA7146, IBMMPEG2): MPEG2 decoder only
-
 Powercolor
 ----------
    MTV878

Documentation/video4linux/gspca.txt

@@ -366,6 +366,7 @@ t613		17a1:0128	TASCORP JPEG Webcam, NGS Cyclops
 vc032x		17ef:4802	Lenovo Vc0323+MI1310_SOC
 pac207		2001:f115	D-Link DSB-C120
 sq905c		2770:9050	Disney pix micro (CIF)
+sq905c		2770:9051	Lego Bionicle
 sq905c		2770:9052	Disney pix micro 2 (VGA)
 sq905c		2770:905c	All 11 known cameras with this ID
 sq905		2770:9120	All 24 known cameras with this ID

Documentation/video4linux/meye.txt

@@ -45,8 +45,6 @@ module argument syntax (<param>=<value> when passing the option to the
 module or meye.<param>=<value> on the kernel boot line when meye is
 statically linked into the kernel). Those options are:
 
-	forcev4l1:	force use of V4L1 API instead of V4L2
-
 	gbuffers:	number of capture buffers, default is 2 (32 max)
 
 	gbufsize:	size of each capture buffer, default is 614400
@@ -79,9 +77,8 @@ Usage:
 Private API:
 ------------
 
-	The driver supports frame grabbing with the video4linux API
-	(either v4l1 or v4l2), so all video4linux tools (like xawtv)
-	should work with this driver.
+	The driver supports frame grabbing with the video4linux API,
+	so all video4linux tools (like xawtv) should work with this driver.
 
 	Besides the video4linux interface, the driver has a private interface
 	for accessing the Motion Eye extended parameters (camera sharpness,
@@ -123,7 +120,4 @@ Private API:
 Bugs / Todo:
 ------------
 
-	- the driver could be much cleaned up by removing the v4l1 support.
-	  However, this means all v4l1-only applications will stop working.
-
 	- 'motioneye' still uses the meye private v4l1 API extensions.

Documentation/video4linux/v4lgrab.c

@@ -1,201 +0,0 @@
-/* Simple Video4Linux image grabber. */
-/*
- *	Video4Linux Driver Test/Example Framegrabbing Program
- *
- *	Compile with:
- *		gcc -s -Wall -Wstrict-prototypes v4lgrab.c -o v4lgrab
- *	Use as:
- *		v4lgrab >image.ppm
- *
- *	Copyright (C) 1998-05-03, Phil Blundell <philb@gnu.org>
- *	Copied from http://www.tazenda.demon.co.uk/phil/vgrabber.c
- *	with minor modifications (Dave Forrest, drf5n@virginia.edu).
- *
- *
- *	For some cameras you may need to pre-load libv4l to perform
- *	the necessary decompression, e.g.:
- *
- *	export LD_PRELOAD=/usr/lib/libv4l/v4l1compat.so
- *	./v4lgrab >image.ppm
- *
- *	see http://hansdegoede.livejournal.com/3636.html for details.
- *
- */
-
-#include <unistd.h>
-#include <sys/types.h>
-#include <sys/stat.h>
-#include <fcntl.h>
-#include <stdio.h>
-#include <sys/ioctl.h>
-#include <stdlib.h>
-
-#include <linux/types.h>
-#include <linux/videodev.h>
-
-#define VIDEO_DEV "/dev/video0"
-
-/* Stole this from tvset.c */
-
-#define READ_VIDEO_PIXEL(buf, format, depth, r, g, b)                   \
-{                                                                       \
-	switch (format)                                                 \
-	{                                                               \
-		case VIDEO_PALETTE_GREY:                                \
-			switch (depth)                                  \
-			{                                               \
-				case 4:                                 \
-				case 6:                                 \
-				case 8:                                 \
-					(r) = (g) = (b) = (*buf++ << 8);\
-					break;                          \
-									\
-				case 16:                                \
-					(r) = (g) = (b) =               \
-						*((unsigned short *) buf);      \
-					buf += 2;                       \
-					break;                          \
-			}                                               \
-			break;                                          \
-									\
-									\
-		case VIDEO_PALETTE_RGB565:                              \
-		{                                                       \
-			unsigned short tmp = *(unsigned short *)buf;    \
-			(r) = tmp&0xF800;                               \
-			(g) = (tmp<<5)&0xFC00;                          \
-			(b) = (tmp<<11)&0xF800;                         \
-			buf += 2;                                       \
-		}                                                       \
-		break;                                                  \
-									\
-		case VIDEO_PALETTE_RGB555:                              \
-			(r) = (buf[0]&0xF8)<<8;                         \
-			(g) = ((buf[0] << 5 | buf[1] >> 3)&0xF8)<<8;    \
-			(b) = ((buf[1] << 2 ) & 0xF8)<<8;               \
-			buf += 2;                                       \
-			break;                                          \
-									\
-		case VIDEO_PALETTE_RGB24:                               \
-			(r) = buf[0] << 8; (g) = buf[1] << 8;           \
-			(b) = buf[2] << 8;                              \
-			buf += 3;                                       \
-			break;                                          \
-									\
-		default:                                                \
-			fprintf(stderr,                                 \
-				"Format %d not yet supported\n",        \
-				format);                                \
-	}                                                               \
-}
-
-static int get_brightness_adj(unsigned char *image, long size, int *brightness) {
-  long i, tot = 0;
-  for (i=0;i<size*3;i++)
-    tot += image[i];
-  *brightness = (128 - tot/(size*3))/3;
-  return !((tot/(size*3)) >= 126 && (tot/(size*3)) <= 130);
-}
-
-int main(int argc, char ** argv)
-{
-  int fd = open(VIDEO_DEV, O_RDONLY), f;
-  struct video_capability cap;
-  struct video_window win;
-  struct video_picture vpic;
-
-  unsigned char *buffer, *src;
-  int bpp = 24, r = 0, g = 0, b = 0;
-  unsigned int i, src_depth = 16;
-
-  if (fd < 0) {
-    perror(VIDEO_DEV);
-    exit(1);
-  }
-
-  if (ioctl(fd, VIDIOCGCAP, &cap) < 0) {
-    perror("VIDIOGCAP");
-    fprintf(stderr, "(" VIDEO_DEV " not a video4linux device?)\n");
-    close(fd);
-    exit(1);
-  }
-
-  if (ioctl(fd, VIDIOCGWIN, &win) < 0) {
-    perror("VIDIOCGWIN");
-    close(fd);
-    exit(1);
-  }
-
-  if (ioctl(fd, VIDIOCGPICT, &vpic) < 0) {
-    perror("VIDIOCGPICT");
-    close(fd);
-    exit(1);
-  }
-
-  if (cap.type & VID_TYPE_MONOCHROME) {
-    vpic.depth=8;
-    vpic.palette=VIDEO_PALETTE_GREY;    /* 8bit grey */
-    if(ioctl(fd, VIDIOCSPICT, &vpic) < 0) {
-      vpic.depth=6;
-      if(ioctl(fd, VIDIOCSPICT, &vpic) < 0) {
-	vpic.depth=4;
-	if(ioctl(fd, VIDIOCSPICT, &vpic) < 0) {
-	  fprintf(stderr, "Unable to find a supported capture format.\n");
-	  close(fd);
-	  exit(1);
-	}
-      }
-    }
-  } else {
-    vpic.depth=24;
-    vpic.palette=VIDEO_PALETTE_RGB24;
-
-    if(ioctl(fd, VIDIOCSPICT, &vpic) < 0) {
-      vpic.palette=VIDEO_PALETTE_RGB565;
-      vpic.depth=16;
-
-      if(ioctl(fd, VIDIOCSPICT, &vpic)==-1) {
-	vpic.palette=VIDEO_PALETTE_RGB555;
-	vpic.depth=15;
-
-	if(ioctl(fd, VIDIOCSPICT, &vpic)==-1) {
-	  fprintf(stderr, "Unable to find a supported capture format.\n");
-	  return -1;
-	}
-      }
-    }
-  }
-
-  buffer = malloc(win.width * win.height * bpp);
-  if (!buffer) {
-    fprintf(stderr, "Out of memory.\n");
-    exit(1);
-  }
-
-  do {
-    int newbright;
-    read(fd, buffer, win.width * win.height * bpp);
-    f = get_brightness_adj(buffer, win.width * win.height, &newbright);
-    if (f) {
-      vpic.brightness += (newbright << 8);
-      if(ioctl(fd, VIDIOCSPICT, &vpic)==-1) {
-	perror("VIDIOSPICT");
-	break;
-      }
-    }
-  } while (f);
-
-  fprintf(stdout, "P6\n%d %d 255\n", win.width, win.height);
-
-  src = buffer;
-
-  for (i = 0; i < win.width * win.height; i++) {
-    READ_VIDEO_PIXEL(src, vpic.palette, src_depth, r, g, b);
-    fputc(r>>8, stdout);
-    fputc(g>>8, stdout);
-    fputc(b>>8, stdout);
-  }
-
-  close(fd);
-  return 0;
-}

Documentation/video4linux/videobuf

@@ -247,8 +247,6 @@ calls.  The relevant helper functions are:
 		       int nonblocking);
     int videobuf_streamon(struct videobuf_queue *q);
     int videobuf_streamoff(struct videobuf_queue *q);
-    int videobuf_cgmbuf(struct videobuf_queue *q, struct video_mbuf *mbuf,
-			int count);
 
 So, for example, a VIDIOC_REQBUFS call turns into a call to the driver's
 vidioc_reqbufs() callback which, in turn, usually only needs to locate the
@@ -258,10 +256,7 @@ boilerplate in a lot of V4L2 drivers.
 
 The vidioc_streamon() and vidioc_streamoff() functions will be a bit more
 complex, of course, since they will also need to deal with starting and
-stopping the capture engine.  videobuf_cgmbuf(), called from the driver's
-vidiocgmbuf() function, only exists if the V4L1 compatibility module has
-been selected with CONFIG_VIDEO_V4L1_COMPAT, so its use must be surrounded
-with #ifdef directives.
+stopping the capture engine.
 
 Buffer allocation
 

Documentation/x86/boot.txt

@@ -600,6 +600,7 @@ Protocol:	2.07+
   0x00000001	lguest
   0x00000002	Xen
   0x00000003	Moorestown MID
+  0x00000004	CE4100 TV Platform
 
 Field name:	hardware_subarch_data
 Type:		write (subarch-dependent)

MAINTAINERS

@@ -161,14 +161,13 @@ M:	Greg Kroah-Hartman <gregkh@suse.de>
 L:	linux-serial@vger.kernel.org
 W:	http://serial.sourceforge.net
 S:	Maintained
-T:	quilt kernel.org/pub/linux/kernel/people/gregkh/gregkh-2.6/
+T:	git git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty-2.6.git
 F:	drivers/serial/8250*
 F:	include/linux/serial_8250.h
 
 8390 NETWORK DRIVERS [WD80x3/SMC-ELITE, SMC-ULTRA, NE2000, 3C503, etc.]
-M:	Paul Gortmaker <p_gortmaker@yahoo.com>
 L:	netdev@vger.kernel.org
-S:	Maintained
+S:	Orphan / Obsolete
 F:	drivers/net/*8390*
 F:	drivers/net/ax88796.c
 
@@ -405,7 +404,7 @@ S:	Supported
 F:	drivers/usb/gadget/amd5536udc.*
 
 AMD GEODE PROCESSOR/CHIPSET SUPPORT
-P:	Jordan Crouse
+P:	Andres Salomon <dilinger@queued.net>
 L:	linux-geode@lists.infradead.org (moderated for non-subscribers)
 W:	http://www.amd.com/us-en/ConnectivitySolutions/TechnicalResources/0,,50_2334_2452_11363,00.html
 S:	Supported
@@ -559,14 +558,14 @@ W:	http://maxim.org.za/at91_26.html
 S:	Maintained
 
 ARM/BCMRING ARM ARCHITECTURE
-M:	Leo Chen <leochen@broadcom.com>
+M:	Jiandong Zheng <jdzheng@broadcom.com>
 M:	Scott Branden <sbranden@broadcom.com>
 L:	linux-arm-kernel@lists.infradead.org (moderated for non-subscribers)
 S:	Maintained
 F:	arch/arm/mach-bcmring
 
 ARM/BCMRING MTD NAND DRIVER
-M:	Leo Chen <leochen@broadcom.com>
+M:	Jiandong Zheng <jdzheng@broadcom.com>
 M:	Scott Branden <sbranden@broadcom.com>
 L:	linux-mtd@lists.infradead.org
 S:	Maintained
@@ -792,11 +791,14 @@ S:	Maintained
 
 ARM/NOMADIK ARCHITECTURE
 M:	Alessandro Rubini <rubini@unipv.it>
+M:	Linus Walleij <linus.walleij@stericsson.com>
 M:	STEricsson <STEricsson_nomadik_linux@list.st.com>
 L:	linux-arm-kernel@lists.infradead.org (moderated for non-subscribers)
 S:	Maintained
 F:	arch/arm/mach-nomadik/
 F:	arch/arm/plat-nomadik/
+F:	drivers/i2c/busses/i2c-nomadik.c
+T:	git git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-stericsson.git
 
 ARM/OPENMOKO NEO FREERUNNER (GTA02) MACHINE SUPPORT
 M:	Nelson Castillo <arhuaco@freaks-unidos.net>
@@ -815,7 +817,7 @@ F:	drivers/mmc/host/msm_sdcc.c
 F:	drivers/mmc/host/msm_sdcc.h
 F:	drivers/serial/msm_serial.h
 F:	drivers/serial/msm_serial.c
-T:	git git://codeaurora.org/quic/kernel/dwalker/linux-msm.git
+T:	git git://codeaurora.org/quic/kernel/davidb/linux-msm.git
 S:	Maintained
 
 ARM/TOSA MACHINE SUPPORT
@@ -945,7 +947,7 @@ M:	Magnus Damm <magnus.damm@gmail.com>
 L:	linux-sh@vger.kernel.org
 W:	http://oss.renesas.com
 Q:	http://patchwork.kernel.org/project/linux-sh/list/
-T:	git git://git.kernel.org/pub/scm/linux/kernel/git/lethal/genesis-2.6.git
+T:	git git://git.kernel.org/pub/scm/linux/kernel/git/lethal/sh-2.6.git rmobile-latest
 S:	Supported
 F:	arch/arm/mach-shmobile/
 F:	drivers/sh/
@@ -998,12 +1000,24 @@ F:	drivers/i2c/busses/i2c-stu300.c
 F:	drivers/rtc/rtc-coh901331.c
 F:	drivers/watchdog/coh901327_wdt.c
 F:	drivers/dma/coh901318*
+F:	drivers/mfd/ab3100*
+F:	drivers/rtc/rtc-ab3100.c
+F:	drivers/rtc/rtc-coh901331.c
+T:	git git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-stericsson.git
 
-ARM/U8500 ARM ARCHITECTURE
+ARM/Ux500 ARM ARCHITECTURE
 M:	Srinidhi Kasagar <srinidhi.kasagar@stericsson.com>
+M:	Linus Walleij <linus.walleij@stericsson.com>
 L:	linux-arm-kernel@lists.infradead.org (moderated for non-subscribers)
 S:	Maintained
 F:	arch/arm/mach-ux500/
+F:	drivers/dma/ste_dma40*
+F:	drivers/mfd/ab3550*
+F:	drivers/mfd/abx500*
+F:	drivers/mfd/ab8500*
+F:	drivers/mfd/stmpe*
+F:	drivers/rtc/rtc-ab8500.c
+T:	git git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-stericsson.git
 
 ARM/VFP SUPPORT
 M:	Russell King <linux@arm.linux.org.uk>
@@ -1080,6 +1094,12 @@ S:	Supported
 F:	Documentation/aoe/
 F:	drivers/block/aoe/
 
+ATHEROS ATH GENERIC UTILITIES
+M:	"Luis R. Rodriguez" <lrodriguez@atheros.com>
+L:	linux-wireless@vger.kernel.org
+S:	Supported
+F:	drivers/net/wireless/ath/*
+
 ATHEROS ATH5K WIRELESS DRIVER
 M:	Jiri Slaby <jirislaby@gmail.com>
 M:	Nick Kossifidis <mickflemm@gmail.com>
@@ -1258,6 +1278,15 @@ S:	Maintained
 F:	drivers/video/backlight/
 F:	include/linux/backlight.h
 
+BATMAN ADVANCED
+M:	Marek Lindner <lindner_marek@yahoo.de>
+M:	Simon Wunderlich <siwu@hrz.tu-chemnitz.de>
+M:	Sven Eckelmann <sven@narfation.org>
+L:	b.a.t.m.a.n@lists.open-mesh.org
+W:	http://www.open-mesh.org/
+S:	Maintained
+F:	net/batman-adv/
+
 BAYCOM/HDLCDRV DRIVERS FOR AX.25
 M:	Thomas Sailer <t.sailer@alumni.ethz.ch>
 L:	linux-hams@vger.kernel.org
@@ -1359,7 +1388,7 @@ F:	include/net/bluetooth/
 
 BONDING DRIVER
 M:	Jay Vosburgh <fubar@us.ibm.com>
-L:	bonding-devel@lists.sourceforge.net
+L:	netdev@vger.kernel.org
 W:	http://sourceforge.net/projects/bonding/
 S:	Supported
 F:	drivers/net/bonding/
@@ -1829,6 +1858,13 @@ W:	http://www.chelsio.com
 S:	Supported
 F:	drivers/net/cxgb4vf/
 
+STMMAC ETHERNET DRIVER
+M:	Giuseppe Cavallaro <peppe.cavallaro@st.com>
+L:	netdev@vger.kernel.org
+W:	http://www.stlinux.com
+S:	Supported
+F:	drivers/net/stmmac/
+
 CYBERPRO FB DRIVER
 M:	Russell King <linux@arm.linux.org.uk>
 L:	linux-arm-kernel@lists.infradead.org (moderated for non-subscribers)
@@ -2008,6 +2044,7 @@ F:	drivers/hwmon/dme1737.c
 DOCBOOK FOR DOCUMENTATION
 M:	Randy Dunlap <rdunlap@xenotime.net>
 S:	Maintained
+F:	scripts/kernel-doc
 
 DOCKING STATION DRIVER
 M:	Shaohua Li <shaohua.li@intel.com>
@@ -2018,6 +2055,7 @@ F:	drivers/acpi/dock.c
 DOCUMENTATION
 M:	Randy Dunlap <rdunlap@xenotime.net>
 L:	linux-doc@vger.kernel.org
+T:	quilt oss.oracle.com/~rdunlap/kernel-doc-patches/current/
 S:	Maintained
 F:	Documentation/
 
@@ -2051,7 +2089,7 @@ F:	Documentation/blockdev/drbd/
 
 DRIVER CORE, KOBJECTS, DEBUGFS AND SYSFS
 M:	Greg Kroah-Hartman <gregkh@suse.de>
-T:	quilt kernel.org/pub/linux/kernel/people/gregkh/gregkh-2.6/
+T:	git git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core-2.6.git
 S:	Supported
 F:	Documentation/kobject.txt
 F:	drivers/base/
@@ -2071,7 +2109,7 @@ F:	include/drm/
 
 INTEL DRM DRIVERS (excluding Poulsbo, Moorestown and derivative chipsets)
 M:	Chris Wilson <chris@chris-wilson.co.uk>
-L:	intel-gfx@lists.freedesktop.org
+L:	intel-gfx@lists.freedesktop.org (subscribers-only)
 L:	dri-devel@lists.freedesktop.org
 T:	git git://git.kernel.org/pub/scm/linux/kernel/git/ickle/drm-intel.git
 S:	Supported
@@ -2435,9 +2473,12 @@ F:	drivers/net/wan/sdla.c
 FRAMEBUFFER LAYER
 L:	linux-fbdev@vger.kernel.org
 W:	http://linux-fbdev.sourceforge.net/
+Q:	http://patchwork.kernel.org/project/linux-fbdev/list/
+T:	git git://git.kernel.org/pub/scm/linux/kernel/git/lethal/fbdev-2.6.git
 S:	Orphan
 F:	Documentation/fb/
-F:	drivers/video/fb*
+F:	drivers/video/
+F:	include/video/
 F:	include/linux/fb.h
 
 FREESCALE DMA DRIVER
@@ -2785,6 +2826,10 @@ M:	Thomas Gleixner <tglx@linutronix.de>
 S:	Maintained
 F:	Documentation/timers/
 F:	kernel/hrtimer.c
+F:	kernel/time/clockevents.c
+F:	kernel/time/tick*.*
+F:	kernel/time/timer_*.c
+F	include/linux/clockevents.h
 F:	include/linux/hrtimer.h
 
 HIGH-SPEED SCC DRIVER FOR AX.25
@@ -3020,8 +3065,10 @@ F:	drivers/input/
 INPUT MULTITOUCH (MT) PROTOCOL
 M:	Henrik Rydberg <rydberg@euromail.se>
 L:	linux-input@vger.kernel.org
+T:	git git://git.kernel.org/pub/scm/linux/kernel/git/rydberg/input-mt.git
 S:	Maintained
 F:	Documentation/input/multi-touch-protocol.txt
+F:	drivers/input/input-mt.c
 K:	\b(ABS|SYN)_MT_
 
 INTEL IDLE DRIVER
@@ -3108,6 +3155,8 @@ M:	Alex Duyck <alexander.h.duyck@intel.com>
 M:	John Ronciak <john.ronciak@intel.com>
 L:	e1000-devel@lists.sourceforge.net
 W:	http://e1000.sourceforge.net/
+T:	git git://git.kernel.org/pub/scm/linux/kernel/git/jkirsher/net-2.6.git
+T:	git git://git.kernel.org/pub/scm/linux/kernel/git/jkirsher/net-next-2.6.git
 S:	Supported
 F:	Documentation/networking/e100.txt
 F:	Documentation/networking/e1000.txt
@@ -4052,9 +4101,8 @@ F:	drivers/scsi/NCR_D700.*
 
 NETEFFECT IWARP RNIC DRIVER (IW_NES)
 M:	Faisal Latif <faisal.latif@intel.com>
-M:	Chien Tung <chien.tin.tung@intel.com>
 L:	linux-rdma@vger.kernel.org
-W:	http://www.neteffect.com
+W:	http://www.intel.com/Products/Server/Adapters/Server-Cluster/Server-Cluster-overview.htm
 S:	Supported
 F:	drivers/infiniband/hw/nes/
 
@@ -4317,6 +4365,20 @@ M:	Deepak Saxena <dsaxena@plexity.net>
 S:	Maintained
 F:	drivers/char/hw_random/omap-rng.c
 
+OMAP HWMOD SUPPORT
+M:	Benoît Cousson <b-cousson@ti.com>
+M:	Paul Walmsley <paul@pwsan.com>
+L:	linux-omap@vger.kernel.org
+S:	Maintained
+F:	arch/arm/mach-omap2/omap_hwmod.c
+F:	arch/arm/plat-omap/include/plat/omap_hwmod.h
+
+OMAP HWMOD DATA FOR OMAP4-BASED DEVICES
+M:	Benoît Cousson <b-cousson@ti.com>
+L:	linux-omap@vger.kernel.org
+S:	Maintained
+F:	arch/arm/mach-omap2/omap_hwmod_44xx_data.c
+
 OMAP USB SUPPORT
 M:	Felipe Balbi <balbi@ti.com>
 M:	David Brownell <dbrownell@users.sourceforge.net>
@@ -4579,7 +4641,7 @@ F:	drivers/pcmcia/
 F:	include/pcmcia/
 
 PCNET32 NETWORK DRIVER
-M:	Don Fry <pcnet32@verizon.net>
+M:	Don Fry <pcnet32@frontier.com>
 L:	netdev@vger.kernel.org
 S:	Maintained
 F:	drivers/net/pcnet32.c
@@ -4591,6 +4653,16 @@ S:	Maintained
 F:	crypto/pcrypt.c
 F:	include/crypto/pcrypt.h
 
+PER-CPU MEMORY ALLOCATOR
+M:	Tejun Heo <tj@kernel.org>
+M:	Christoph Lameter <cl@linux-foundation.org>
+L:	linux-kernel@vger.kernel.org
+T:	git git://git.kernel.org/pub/scm/linux/kernel/git/tj/percpu.git
+S:	Maintained
+F:	include/linux/percpu*.h
+F:	mm/percpu*.c
+F:	arch/*/include/asm/percpu.h
+
 PER-TASK DELAY ACCOUNTING
 M:	Balbir Singh <balbir@linux.vnet.ibm.com>
 S:	Maintained
@@ -4601,7 +4673,7 @@ PERFORMANCE EVENTS SUBSYSTEM
 M:	Peter Zijlstra <a.p.zijlstra@chello.nl>
 M:	Paul Mackerras <paulus@samba.org>
 M:	Ingo Molnar <mingo@elte.hu>
-M:	Arnaldo Carvalho de Melo <acme@redhat.com>
+M:	Arnaldo Carvalho de Melo <acme@ghostprotocols.net>
 S:	Supported
 F:	kernel/perf_event*.c
 F:	include/linux/perf_event.h
@@ -5026,7 +5098,7 @@ L:	linux-wireless@vger.kernel.org
 W:	http://linuxwireless.org/
 T:	git git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless-testing.git
 S:	Maintained
-F:	drivers/net/wireless/rtl818x/rtl8180*
+F:	drivers/net/wireless/rtl818x/rtl8180/
 
 RTL8187 WIRELESS DRIVER
 M:	Herton Ronaldo Krzesinski <herton@mandriva.com.br>
@@ -5036,7 +5108,17 @@ L:	linux-wireless@vger.kernel.org
 W:	http://linuxwireless.org/
 T:	git git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless-testing.git
 S:	Maintained
-F:	drivers/net/wireless/rtl818x/rtl8187*
+F:	drivers/net/wireless/rtl818x/rtl8187/
+
+RTL8192CE WIRELESS DRIVER
+M:	Larry Finger <Larry.Finger@lwfinger.net>
+M:	Chaoming Li <chaoming_li@realsil.com.cn>
+L:	linux-wireless@vger.kernel.org
+W:	http://linuxwireless.org/
+T:	git git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless-testing.git
+S:	Maintained
+F:	drivers/net/wireless/rtlwifi/
+F:	drivers/net/wireless/rtlwifi/rtl8192ce/
 
 S3 SAVAGE FRAMEBUFFER DRIVER
 M:	Antonino Daplas <adaplas@gmail.com>
@@ -5116,6 +5198,18 @@ L:	alsa-devel@alsa-project.org (moderated for non-subscribers)
 S:	Supported
 F:	sound/soc/s3c24xx
 
+TIMEKEEPING, NTP
+M:	John Stultz <johnstul@us.ibm.com>
+M:	Thomas Gleixner <tglx@linutronix.de>
+S:	Supported
+F:	include/linux/clocksource.h
+F:	include/linux/time.h
+F:	include/linux/timex.h
+F:	include/linux/timekeeping.h
+F:	kernel/time/clocksource.c
+F:	kernel/time/time*.c
+F:	kernel/time/ntp.c
+
 TLG2300 VIDEO4LINUX-2 DRIVER
 M:	Huang Shijie <shijie8@gmail.com>
 M:	Kang Yong <kangyong@telegent.com>
@@ -5676,7 +5770,7 @@ S:	Maintained
 
 STAGING SUBSYSTEM
 M:	Greg Kroah-Hartman <gregkh@suse.de>
-T:	git git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging-next-2.6.git
+T:	git git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging-2.6.git
 L:	devel@driverdev.osuosl.org
 S:	Maintained
 F:	drivers/staging/
@@ -5686,12 +5780,6 @@ M:	Ion Badulescu <ionut@badula.org>
 S:	Odd Fixes
 F:	drivers/net/starfire*
 
-STRADIS MPEG-2 DECODER DRIVER
-M:	Nathan Laredo <laredo@gnu.org>
-W:	http://www.stradis.com/
-S:	Maintained
-F:	drivers/media/video/stradis.c
-
 SUN3/3X
 M:	Sam Creasey <sammy@sammy.net>
 W:	http://sammy.net/sun3/
@@ -5705,7 +5793,7 @@ M:	Paul Mundt <lethal@linux-sh.org>
 L:	linux-sh@vger.kernel.org
 W:	http://www.linux-sh.org
 Q:	http://patchwork.kernel.org/project/linux-sh/list/
-T:	git git://git.kernel.org/pub/scm/linux/kernel/git/lethal/sh-2.6.git
+T:	git git://git.kernel.org/pub/scm/linux/kernel/git/lethal/sh-2.6.git sh-latest
 S:	Supported
 F:	Documentation/sh/
 F:	arch/sh/
@@ -5827,6 +5915,8 @@ M:	Chris Metcalf <cmetcalf@tilera.com>
 W:	http://www.tilera.com/scm/
 S:	Supported
 F:	arch/tile/
+F:	drivers/char/hvc_tile.c
+F:	drivers/net/tile/
 
 TLAN NETWORK DRIVER
 M:	Samuel Chessman <chessman@tux.org>
@@ -5910,7 +6000,7 @@ S:	Maintained
 TTY LAYER
 M:	Greg Kroah-Hartman <gregkh@suse.de>
 S:	Maintained
-T:	quilt kernel.org/pub/linux/kernel/people/gregkh/gregkh-2.6/
+T:	git git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty-2.6.git
 F:	drivers/char/tty_*
 F:	drivers/serial/serial_core.c
 F:	include/linux/serial_core.h
@@ -5919,7 +6009,6 @@ F:	include/linux/tty.h
 
 TULIP NETWORK DRIVERS
 M:	Grant Grundler <grundler@parisc-linux.org>
-M:	Kyle McMartin <kyle@mcmartin.ca>
 L:	netdev@vger.kernel.org
 S:	Maintained
 F:	drivers/net/tulip/
@@ -6233,7 +6322,7 @@ USB SUBSYSTEM
 M:	Greg Kroah-Hartman <gregkh@suse.de>
 L:	linux-usb@vger.kernel.org
 W:	http://www.linux-usb.org
-T:	quilt kernel.org/pub/linux/kernel/people/gregkh/gregkh-2.6/
+T:	git git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb-2.6.git
 S:	Supported
 F:	Documentation/usb/
 F:	drivers/net/usb/
@@ -6571,6 +6660,15 @@ F:	include/linux/mfd/wm8400*
 F:	include/sound/wm????.h
 F:	sound/soc/codecs/wm*
 
+WORKQUEUE
+M:	Tejun Heo <tj@kernel.org>
+L:	linux-kernel@vger.kernel.org
+T:	git git://git.kernel.org/pub/scm/linux/kernel/git/tj/wq.git
+S:	Maintained
+F:	include/linux/workqueue.h
+F:	kernel/workqueue.c
+F:	Documentation/workqueue.txt
+
 X.25 NETWORK LAYER
 M:	Andrew Hendry <andrew.hendry@gmail.com>
 L:	linux-x25@vger.kernel.org
@@ -6598,14 +6696,14 @@ F:	drivers/platform/x86
 
 XEN PCI SUBSYSTEM
 M:	Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
-L:	xen-devel@lists.xensource.com
+L:	xen-devel@lists.xensource.com (moderated for non-subscribers)
 S:	Supported
 F:	arch/x86/pci/*xen*
 F:	drivers/pci/*xen*
 
 XEN SWIOTLB SUBSYSTEM
 M:	Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
-L:	xen-devel@lists.xensource.com
+L:	xen-devel@lists.xensource.com (moderated for non-subscribers)
 S:	Supported
 F:	arch/x86/xen/*swiotlb*
 F:	drivers/xen/*swiotlb*
@@ -6613,7 +6711,7 @@ F:	drivers/xen/*swiotlb*
 XEN HYPERVISOR INTERFACE
 M:	Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
 M:	Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
-L:	xen-devel@lists.xen.org
+L:	xen-devel@lists.xensource.com (moderated for non-subscribers)
 L:	virtualization@lists.osdl.org
 S:	Supported
 F:	arch/x86/xen/

Makefile

@@ -1,7 +1,7 @@
 VERSION = 2
 PATCHLEVEL = 6
 SUBLEVEL = 37
-EXTRAVERSION = -rc1
+EXTRAVERSION =
 NAME = Flesh-Eating Bats with Fangs
 
 # *DOCUMENTATION*

arch/Kconfig

@@ -175,4 +175,7 @@ config HAVE_PERF_EVENTS_NMI
 config HAVE_ARCH_JUMP_LABEL
 	bool
 
+config HAVE_ARCH_MUTEX_CPU_RELAX
+	bool
+
 source "kernel/gcov/Kconfig"

arch/alpha/include/asm/ioctls.h

@@ -92,6 +92,7 @@
 #define TIOCGSID	0x5429  /* Return the session ID of FD */
 #define TIOCGPTN	_IOR('T',0x30, unsigned int) /* Get Pty Number (of pty-mux device) */
 #define TIOCSPTLCK	_IOW('T',0x31, int)  /* Lock/unlock Pty */
+#define TIOCGDEV	_IOR('T',0x32, unsigned int) /* Get primary device node of /dev/console */
 #define TIOCSIG		_IOW('T',0x36, int)  /* Generate signal on Pty slave */
 
 #define TIOCSERCONFIG	0x5453

arch/alpha/include/asm/perf_event.h

@@ -1,10 +1,4 @@
 #ifndef __ASM_ALPHA_PERF_EVENT_H
 #define __ASM_ALPHA_PERF_EVENT_H
 
-#ifdef CONFIG_PERF_EVENTS
-extern void init_hw_perf_events(void);
-#else
-static inline void init_hw_perf_events(void)    { }
-#endif
-
 #endif /* __ASM_ALPHA_PERF_EVENT_H */

arch/alpha/kernel/irq_alpha.c

@@ -112,8 +112,6 @@ init_IRQ(void)
 	wrent(entInt, 0);
 
 	alpha_mv.init_irq();
-
-	init_hw_perf_events();
 }
 
 /*

arch/alpha/kernel/perf_event.c

@@ -14,6 +14,7 @@
 #include <linux/kernel.h>
 #include <linux/kdebug.h>
 #include <linux/mutex.h>
+#include <linux/init.h>
 
 #include <asm/hwrpb.h>
 #include <asm/atomic.h>
@@ -863,13 +864,13 @@ static void alpha_perf_event_irq_handler(unsigned long la_ptr,
 /*
  * Init call to initialise performance events at kernel startup.
  */
-void __init init_hw_perf_events(void)
+int __init init_hw_perf_events(void)
 {
 	pr_info("Performance events: ");
 
 	if (!supported_cpu()) {
 		pr_cont("No support for your CPU.\n");
-		return;
+		return 0;
 	}
 
 	pr_cont("Supported CPU type!\n");
@@ -881,6 +882,8 @@ void __init init_hw_perf_events(void)
 	/* And set up PMU specification */
 	alpha_pmu = &ev67_pmu;
 
-	perf_pmu_register(&pmu);
-}
+	perf_pmu_register(&pmu, "cpu", PERF_TYPE_RAW);
 
+	return 0;
+}
+early_initcall(init_hw_perf_events);

arch/arm/Kconfig

@@ -2,18 +2,20 @@ config ARM
 	bool
 	default y
 	select HAVE_AOUT
+	select HAVE_DMA_API_DEBUG
 	select HAVE_IDE
 	select HAVE_MEMBLOCK
 	select RTC_LIB
 	select SYS_SUPPORTS_APM_EMULATION
-	select GENERIC_ATOMIC64 if (!CPU_32v6K)
+	select GENERIC_ATOMIC64 if (!CPU_32v6K || !AEABI)
 	select HAVE_OPROFILE if (HAVE_PERF_EVENTS)
 	select HAVE_ARCH_KGDB
-	select HAVE_KPROBES if (!XIP_KERNEL)
+	select HAVE_KPROBES if (!XIP_KERNEL && !THUMB2_KERNEL)
 	select HAVE_KRETPROBES if (HAVE_KPROBES)
 	select HAVE_FUNCTION_TRACER if (!XIP_KERNEL)
 	select HAVE_FTRACE_MCOUNT_RECORD if (!XIP_KERNEL)
 	select HAVE_DYNAMIC_FTRACE if (!XIP_KERNEL)
+	select HAVE_FUNCTION_GRAPH_TRACER if (!THUMB2_KERNEL)
 	select HAVE_GENERIC_DMA_COHERENT
 	select HAVE_KERNEL_GZIP
 	select HAVE_KERNEL_LZO
@@ -23,6 +25,7 @@ config ARM
 	select PERF_USE_VMALLOC
 	select HAVE_REGS_AND_STACK_ACCESS_API
 	select HAVE_HW_BREAKPOINT if (PERF_EVENTS && (CPU_V6 || CPU_V7))
+	select HAVE_C_RECORDMCOUNT
 	help
 	  The ARM series is a line of low-power-consumption RISC chip designs
 	  licensed by ARM Ltd and targeted at embedded applications and
@@ -34,9 +37,15 @@ config ARM
 config HAVE_PWM
 	bool
 
+config MIGHT_HAVE_PCI
+	bool
+
 config SYS_SUPPORTS_APM_EMULATION
 	bool
 
+config HAVE_SCHED_CLOCK
+	bool
+
 config GENERIC_GPIO
 	bool
 
@@ -221,7 +230,7 @@ config ARCH_INTEGRATOR
 	bool "ARM Ltd. Integrator family"
 	select ARM_AMBA
 	select ARCH_HAS_CPUFREQ
-	select COMMON_CLKDEV
+	select CLKDEV_LOOKUP
 	select ICST
 	select GENERIC_CLOCKEVENTS
 	select PLAT_VERSATILE
@@ -231,7 +240,8 @@ config ARCH_INTEGRATOR
 config ARCH_REALVIEW
 	bool "ARM Ltd. RealView family"
 	select ARM_AMBA
-	select COMMON_CLKDEV
+	select CLKDEV_LOOKUP
+	select HAVE_SCHED_CLOCK
 	select ICST
 	select GENERIC_CLOCKEVENTS
 	select ARCH_WANT_OPTIONAL_GPIOLIB
@@ -245,7 +255,8 @@ config ARCH_VERSATILE
 	bool "ARM Ltd. Versatile family"
 	select ARM_AMBA
 	select ARM_VIC
-	select COMMON_CLKDEV
+	select CLKDEV_LOOKUP
+	select HAVE_SCHED_CLOCK
 	select ICST
 	select GENERIC_CLOCKEVENTS
 	select ARCH_WANT_OPTIONAL_GPIOLIB
@@ -259,9 +270,10 @@ config ARCH_VEXPRESS
 	select ARCH_WANT_OPTIONAL_GPIOLIB
 	select ARM_AMBA
 	select ARM_TIMER_SP804
-	select COMMON_CLKDEV
+	select CLKDEV_LOOKUP
 	select GENERIC_CLOCKEVENTS
 	select HAVE_CLK
+	select HAVE_SCHED_CLOCK
 	select ICST
 	select PLAT_VERSATILE
 	help
@@ -280,7 +292,7 @@ config ARCH_BCMRING
 	depends on MMU
 	select CPU_V6
 	select ARM_AMBA
-	select COMMON_CLKDEV
+	select CLKDEV_LOOKUP
 	select GENERIC_CLOCKEVENTS
 	select ARCH_WANT_OPTIONAL_GPIOLIB
 	help
@@ -298,6 +310,7 @@ config ARCH_CNS3XXX
 	select CPU_V6
 	select GENERIC_CLOCKEVENTS
 	select ARM_GIC
+	select MIGHT_HAVE_PCI
 	select PCI_DOMAINS if PCI
 	help
 	  Support for Cavium Networks CNS3XXX platform.
@@ -327,7 +340,7 @@ config ARCH_EP93XX
 	select CPU_ARM920T
 	select ARM_AMBA
 	select ARM_VIC
-	select COMMON_CLKDEV
+	select CLKDEV_LOOKUP
 	select ARCH_REQUIRE_GPIOLIB
 	select ARCH_HAS_HOLES_MEMORYMODEL
 	select ARCH_USES_GETTIMEOFFSET
@@ -347,14 +360,22 @@ config ARCH_MXC
 	bool "Freescale MXC/iMX-based"
 	select GENERIC_CLOCKEVENTS
 	select ARCH_REQUIRE_GPIOLIB
-	select COMMON_CLKDEV
+	select CLKDEV_LOOKUP
 	help
 	  Support for Freescale MXC/iMX-based family of processors
 
+config ARCH_MXS
+	bool "Freescale MXS-based"
+	select GENERIC_CLOCKEVENTS
+	select ARCH_REQUIRE_GPIOLIB
+	select COMMON_CLKDEV
+	help
+	  Support for Freescale MXS-based family of processors
+
 config ARCH_STMP3XXX
 	bool "Freescale STMP3xxx"
 	select CPU_ARM926T
-	select COMMON_CLKDEV
+	select CLKDEV_LOOKUP
 	select ARCH_REQUIRE_GPIOLIB
 	select GENERIC_CLOCKEVENTS
 	select USB_ARCH_HAS_EHCI
@@ -433,6 +454,8 @@ config ARCH_IXP4XX
 	select CPU_XSCALE
 	select GENERIC_GPIO
 	select GENERIC_CLOCKEVENTS
+	select HAVE_SCHED_CLOCK
+	select MIGHT_HAVE_PCI
 	select DMABOUNCE if PCI
 	help
 	  Support for Intel's IXP4XX (XScale) family of processors.
@@ -472,7 +495,7 @@ config ARCH_LPC32XX
 	select HAVE_IDE
 	select ARM_AMBA
 	select USB_ARCH_HAS_OHCI
-	select COMMON_CLKDEV
+	select CLKDEV_LOOKUP
 	select GENERIC_TIME
 	select GENERIC_CLOCKEVENTS
 	help
@@ -506,8 +529,9 @@ config ARCH_MMP
 	bool "Marvell PXA168/910/MMP2"
 	depends on MMU
 	select ARCH_REQUIRE_GPIOLIB
-	select COMMON_CLKDEV
+	select CLKDEV_LOOKUP
 	select GENERIC_CLOCKEVENTS
+	select HAVE_SCHED_CLOCK
 	select TICK_ONESHOT
 	select PLAT_PXA
 	select SPARSE_IRQ
@@ -539,7 +563,7 @@ config ARCH_W90X900
 	bool "Nuvoton W90X900 CPU"
 	select CPU_ARM926T
 	select ARCH_REQUIRE_GPIOLIB
-	select COMMON_CLKDEV
+	select CLKDEV_LOOKUP
 	select GENERIC_CLOCKEVENTS
 	help
 	  Support for Nuvoton (Winbond logic dept.) ARM9 processor,
@@ -553,18 +577,19 @@ config ARCH_W90X900
 config ARCH_NUC93X
 	bool "Nuvoton NUC93X CPU"
 	select CPU_ARM926T
-	select COMMON_CLKDEV
+	select CLKDEV_LOOKUP
 	help
 	  Support for Nuvoton (Winbond logic dept.) NUC93X MCU,The NUC93X is a
 	  low-power and high performance MPEG-4/JPEG multimedia controller chip.
 
 config ARCH_TEGRA
 	bool "NVIDIA Tegra"
+	select CLKDEV_LOOKUP
 	select GENERIC_TIME
 	select GENERIC_CLOCKEVENTS
 	select GENERIC_GPIO
 	select HAVE_CLK
-	select COMMON_CLKDEV
+	select HAVE_SCHED_CLOCK
 	select ARCH_HAS_BARRIERS if CACHE_L2X0
 	select ARCH_HAS_CPUFREQ
 	help
@@ -574,7 +599,7 @@ config ARCH_TEGRA
 config ARCH_PNX4008
 	bool "Philips Nexperia PNX4008 Mobile"
 	select CPU_ARM926T
-	select COMMON_CLKDEV
+	select CLKDEV_LOOKUP
 	select ARCH_USES_GETTIMEOFFSET
 	help
 	  This enables support for Philips PNX4008 mobile platform.
@@ -584,9 +609,10 @@ config ARCH_PXA
 	depends on MMU
 	select ARCH_MTD_XIP
 	select ARCH_HAS_CPUFREQ
-	select COMMON_CLKDEV
+	select CLKDEV_LOOKUP
 	select ARCH_REQUIRE_GPIOLIB
 	select GENERIC_CLOCKEVENTS
+	select HAVE_SCHED_CLOCK
 	select TICK_ONESHOT
 	select PLAT_PXA
 	select SPARSE_IRQ
@@ -606,9 +632,15 @@ config ARCH_MSM
 	  (clock and power control, etc).
 
 config ARCH_SHMOBILE
-	bool "Renesas SH-Mobile"
+	bool "Renesas SH-Mobile / R-Mobile"
+	select HAVE_CLK
+	select CLKDEV_LOOKUP
+	select GENERIC_CLOCKEVENTS
+	select NO_IOPORT
+	select SPARSE_IRQ
+	select MULTI_IRQ_HANDLER
 	help
-	  Support for Renesas's SH-Mobile ARM platforms
+	  Support for Renesas's SH-Mobile and R-Mobile ARM platforms.
 
 config ARCH_RPC
 	bool "RiscPC"
@@ -635,6 +667,7 @@ config ARCH_SA1100
 	select CPU_FREQ
 	select GENERIC_CLOCKEVENTS
 	select HAVE_CLK
+	select HAVE_SCHED_CLOCK
 	select TICK_ONESHOT
 	select ARCH_REQUIRE_GPIOLIB
 	help
@@ -646,7 +679,7 @@ config ARCH_S3C2410
 	select ARCH_HAS_CPUFREQ
 	select HAVE_CLK
 	select ARCH_USES_GETTIMEOFFSET
-	select HAVE_S3C2410_I2C
+	select HAVE_S3C2410_I2C if I2C
 	help
 	  Samsung S3C2410X CPU based systems, such as the Simtec Electronics
 	  BAST (<http://www.simtec.co.uk/products/EB110ITX/>), the IPAQ 1940 or
@@ -676,8 +709,8 @@ config ARCH_S3C64XX
 	select S3C_DEV_NAND
 	select USB_ARCH_HAS_OHCI
 	select SAMSUNG_GPIOLIB_4BIT
-	select HAVE_S3C2410_I2C
-	select HAVE_S3C2410_WATCHDOG
+	select HAVE_S3C2410_I2C if I2C
+	select HAVE_S3C2410_WATCHDOG if WATCHDOG
 	help
 	  Samsung S3C64XX series based systems
 
@@ -686,10 +719,10 @@ config ARCH_S5P64X0
 	select CPU_V6
 	select GENERIC_GPIO
 	select HAVE_CLK
-	select HAVE_S3C2410_WATCHDOG
+	select HAVE_S3C2410_WATCHDOG if WATCHDOG
 	select ARCH_USES_GETTIMEOFFSET
-	select HAVE_S3C2410_I2C
-	select HAVE_S3C_RTC
+	select HAVE_S3C2410_I2C if I2C
+	select HAVE_S3C_RTC if RTC_CLASS
 	help
 	  Samsung S5P64X0 CPU based systems, such as the Samsung SMDK6440,
 	  SMDK6450.
@@ -700,7 +733,7 @@ config ARCH_S5P6442
 	select GENERIC_GPIO
 	select HAVE_CLK
 	select ARCH_USES_GETTIMEOFFSET
-	select HAVE_S3C2410_WATCHDOG
+	select HAVE_S3C2410_WATCHDOG if WATCHDOG
 	help
 	  Samsung S5P6442 CPU based systems
 
@@ -711,9 +744,9 @@ config ARCH_S5PC100
 	select CPU_V7
 	select ARM_L1_CACHE_SHIFT_6
 	select ARCH_USES_GETTIMEOFFSET
-	select HAVE_S3C2410_I2C
-	select HAVE_S3C_RTC
-	select HAVE_S3C2410_WATCHDOG
+	select HAVE_S3C2410_I2C if I2C
+	select HAVE_S3C_RTC if RTC_CLASS
+	select HAVE_S3C2410_WATCHDOG if WATCHDOG
 	help
 	  Samsung S5PC100 series based systems
 
@@ -726,9 +759,9 @@ config ARCH_S5PV210
 	select ARM_L1_CACHE_SHIFT_6
 	select ARCH_HAS_CPUFREQ
 	select ARCH_USES_GETTIMEOFFSET
-	select HAVE_S3C2410_I2C
-	select HAVE_S3C_RTC
-	select HAVE_S3C2410_WATCHDOG
+	select HAVE_S3C2410_I2C if I2C
+	select HAVE_S3C_RTC if RTC_CLASS
+	select HAVE_S3C2410_WATCHDOG if WATCHDOG
 	help
 	  Samsung S5PV210/S5PC110 series based systems
 
@@ -739,9 +772,9 @@ config ARCH_S5PV310
 	select GENERIC_GPIO
 	select HAVE_CLK
 	select GENERIC_CLOCKEVENTS
-	select HAVE_S3C_RTC
-	select HAVE_S3C2410_I2C
-	select HAVE_S3C2410_WATCHDOG
+	select HAVE_S3C_RTC if RTC_CLASS
+	select HAVE_S3C2410_I2C if I2C
+	select HAVE_S3C2410_WATCHDOG if WATCHDOG
 	help
 	  Samsung S5PV310 series based systems
 
@@ -761,7 +794,7 @@ config ARCH_TCC_926
 	bool "Telechips TCC ARM926-based systems"
 	select CPU_ARM926T
 	select HAVE_CLK
-	select COMMON_CLKDEV
+	select CLKDEV_LOOKUP
 	select GENERIC_CLOCKEVENTS
 	help
 	  Support for Telechips TCC ARM926-based systems.
@@ -781,11 +814,12 @@ config ARCH_U300
 	bool "ST-Ericsson U300 Series"
 	depends on MMU
 	select CPU_ARM926T
+	select HAVE_SCHED_CLOCK
 	select HAVE_TCM
 	select ARM_AMBA
 	select ARM_VIC
 	select GENERIC_CLOCKEVENTS
-	select COMMON_CLKDEV
+	select CLKDEV_LOOKUP
 	select GENERIC_GPIO
 	help
 	  Support for ST-Ericsson U300 series mobile platforms.
@@ -795,8 +829,9 @@ config ARCH_U8500
 	select CPU_V7
 	select ARM_AMBA
 	select GENERIC_CLOCKEVENTS
-	select COMMON_CLKDEV
+	select CLKDEV_LOOKUP
 	select ARCH_REQUIRE_GPIOLIB
+	select ARCH_HAS_CPUFREQ
 	help
 	  Support for ST-Ericsson's Ux500 architecture
 
@@ -805,7 +840,7 @@ config ARCH_NOMADIK
 	select ARM_AMBA
 	select ARM_VIC
 	select CPU_ARM926T
-	select COMMON_CLKDEV
+	select CLKDEV_LOOKUP
 	select GENERIC_CLOCKEVENTS
 	select ARCH_REQUIRE_GPIOLIB
 	help
@@ -817,7 +852,7 @@ config ARCH_DAVINCI
 	select ARCH_REQUIRE_GPIOLIB
 	select ZONE_DMA
 	select HAVE_IDE
-	select COMMON_CLKDEV
+	select CLKDEV_LOOKUP
 	select GENERIC_ALLOCATOR
 	select ARCH_HAS_HOLES_MEMORYMODEL
 	help
@@ -829,6 +864,7 @@ config ARCH_OMAP
 	select ARCH_REQUIRE_GPIOLIB
 	select ARCH_HAS_CPUFREQ
 	select GENERIC_CLOCKEVENTS
+	select HAVE_SCHED_CLOCK
 	select ARCH_HAS_HOLES_MEMORYMODEL
 	help
 	  Support for TI's OMAP platform (OMAP1/2/3/4).
@@ -837,7 +873,7 @@ config PLAT_SPEAR
 	bool "ST SPEAr"
 	select ARM_AMBA
 	select ARCH_REQUIRE_GPIOLIB
-	select COMMON_CLKDEV
+	select CLKDEV_LOOKUP
 	select GENERIC_CLOCKEVENTS
 	select HAVE_CLK
 	help
@@ -902,6 +938,8 @@ source "arch/arm/mach-mv78xx0/Kconfig"
 
 source "arch/arm/plat-mxc/Kconfig"
 
+source "arch/arm/mach-mxs/Kconfig"
+
 source "arch/arm/mach-netx/Kconfig"
 
 source "arch/arm/mach-nomadik/Kconfig"
@@ -982,9 +1020,11 @@ config ARCH_ACORN
 config PLAT_IOP
 	bool
 	select GENERIC_CLOCKEVENTS
+	select HAVE_SCHED_CLOCK
 
 config PLAT_ORION
 	bool
+	select HAVE_SCHED_CLOCK
 
 config PLAT_PXA
 	bool
@@ -999,8 +1039,8 @@ source arch/arm/mm/Kconfig
 
 config IWMMXT
 	bool "Enable iWMMXt support"
-	depends on CPU_XSCALE || CPU_XSC3 || CPU_MOHAWK
-	default y if PXA27x || PXA3xx || ARCH_MMP
+	depends on CPU_XSCALE || CPU_XSC3 || CPU_MOHAWK || CPU_PJ4
+	default y if PXA27x || PXA3xx || PXA95x || ARCH_MMP
 	help
 	  Enable support for iWMMXt context switching at run time if
 	  running on a CPU that supports it.
@@ -1017,6 +1057,11 @@ config CPU_HAS_PMU
 	default y
 	bool
 
+config MULTI_IRQ_HANDLER
+	bool
+	help
+	  Allow each machine to specify it's own IRQ handler at run time.
+
 if !MMU
 source "arch/arm/Kconfig-nommu"
 endif
@@ -1164,7 +1209,7 @@ config ISA_DMA_API
 	bool
 
 config PCI
-	bool "PCI support" if ARCH_INTEGRATOR_AP || ARCH_VERSATILE_PB || ARCH_IXP4XX || ARCH_KS8695 || MACH_ARMCORE || ARCH_CNS3XXX
+	bool "PCI support" if MIGHT_HAVE_PCI
 	help
 	  Find out whether you have a PCI motherboard. PCI is the name of a
 	  bus system, i.e. the way the CPU talks to the other stuff inside
@@ -1175,6 +1220,12 @@ config PCI_DOMAINS
 	bool
 	depends on PCI
 
+config PCI_NANOENGINE
+	bool "BSE nanoEngine PCI support"
+	depends on SA1100_NANOENGINE
+	help
+	  Enable PCI on the BSE nanoEngine board.
+
 config PCI_SYSCALL
 	def_bool PCI
 
@@ -1205,10 +1256,11 @@ config SMP
 	depends on EXPERIMENTAL
 	depends on GENERIC_CLOCKEVENTS
 	depends on REALVIEW_EB_ARM11MP || REALVIEW_EB_A9MP || \
-		 MACH_REALVIEW_PB11MP || MACH_REALVIEW_PBX || ARCH_OMAP4 ||\
-		 ARCH_S5PV310 || ARCH_TEGRA || ARCH_U8500 || ARCH_VEXPRESS_CA9X4
+		 MACH_REALVIEW_PB11MP || MACH_REALVIEW_PBX || ARCH_OMAP4 || \
+		 ARCH_S5PV310 || ARCH_TEGRA || ARCH_U8500 || ARCH_VEXPRESS_CA9X4 || \
+		 ARCH_MSM_SCORPIONMP || ARCH_SHMOBILE
 	select USE_GENERIC_SMP_HELPERS
-	select HAVE_ARM_SCU
+	select HAVE_ARM_SCU if !ARCH_MSM_SCORPIONMP
 	help
 	  This enables support for systems with more than one CPU. If you have
 	  a system with only one CPU, like most personal computers, say N. If
@@ -1229,7 +1281,7 @@ config SMP
 config SMP_ON_UP
 	bool "Allow booting SMP kernel on uniprocessor systems (EXPERIMENTAL)"
 	depends on EXPERIMENTAL
-	depends on SMP && !XIP && !THUMB2_KERNEL
+	depends on SMP && !XIP
 	default y
 	help
 	  SMP kernels contain instructions which fail on non-SMP processors.
@@ -1248,6 +1300,7 @@ config HAVE_ARM_SCU
 config HAVE_ARM_TWD
 	bool
 	depends on SMP
+	select TICK_ONESHOT
 	help
 	  This options enables support for the ARM timer and watchdog unit
 
@@ -1283,6 +1336,7 @@ config NR_CPUS
 config HOTPLUG_CPU
 	bool "Support for hot-pluggable CPUs (EXPERIMENTAL)"
 	depends on SMP && HOTPLUG && EXPERIMENTAL
+	depends on !ARCH_MSM
 	help
 	  Say Y here to experiment with turning CPUs off and on.  CPUs
 	  can be controlled through /sys/devices/system/cpu.
@@ -1291,7 +1345,7 @@ config LOCAL_TIMERS
 	bool "Use local timer interrupts"
 	depends on SMP
 	default y
-	select HAVE_ARM_TWD
+	select HAVE_ARM_TWD if !ARCH_MSM_SCORPIONMP
 	help
 	  Enable support for local timers on SMP platforms, rather then the
 	  legacy IPI broadcast method.  Local timers allows the system
@@ -1310,8 +1364,8 @@ config HZ
 	default 100
 
 config THUMB2_KERNEL
-	bool "Compile the kernel in Thumb-2 mode"
-	depends on CPU_V7 && EXPERIMENTAL
+	bool "Compile the kernel in Thumb-2 mode (EXPERIMENTAL)"
+	depends on CPU_V7 && !CPU_V6 && EXPERIMENTAL
 	select AEABI
 	select ARM_ASM_UNIFIED
 	help
@@ -1524,6 +1578,7 @@ config SECCOMP
 
 config CC_STACKPROTECTOR
 	bool "Enable -fstack-protector buffer overflow detection (EXPERIMENTAL)"
+	depends on EXPERIMENTAL
 	help
 	  This option turns on the -fstack-protector GCC feature. This
 	  feature puts, at the beginning of functions, a canary value on
@@ -1650,6 +1705,19 @@ config ATAGS_PROC
 	  Should the atags used to boot the kernel be exported in an "atags"
 	  file in procfs. Useful with kexec.
 
+config CRASH_DUMP
+	bool "Build kdump crash kernel (EXPERIMENTAL)"
+	depends on EXPERIMENTAL
+	help
+	  Generate crash dump after being started by kexec. This should
+	  be normally only set in special crash dump kernels which are
+	  loaded in the main kernel with kexec-tools into a specially
+	  reserved region and then later executed after a crash by
+	  kdump/kexec. The crash dump kernel must be compiled to a
+	  memory address not used by the main kernel
+
+	  For more details see Documentation/kdump/kdump.txt
+
 config AUTO_ZRELADDR
 	bool "Auto calculation of the decompressed kernel image address"
 	depends on !ZBOOT_ROM && !ARCH_U300
@@ -1707,7 +1775,7 @@ config CPU_FREQ_S3C
 	  Internal configuration node for common cpufreq on Samsung SoC
 
 config CPU_FREQ_S3C24XX
-	bool "CPUfreq driver for Samsung S3C24XX series CPUs"
+	bool "CPUfreq driver for Samsung S3C24XX series CPUs (EXPERIMENTAL)"
 	depends on ARCH_S3C2410 && CPU_FREQ && EXPERIMENTAL
 	select CPU_FREQ_S3C
 	help
@@ -1719,7 +1787,7 @@ config CPU_FREQ_S3C24XX
 	  If in doubt, say N.
 
 config CPU_FREQ_S3C24XX_PLL
-	bool "Support CPUfreq changing of PLL frequency"
+	bool "Support CPUfreq changing of PLL frequency (EXPERIMENTAL)"
 	depends on CPU_FREQ_S3C24XX && EXPERIMENTAL
 	help
 	  Compile in support for changing the PLL frequency from the
@@ -1759,7 +1827,7 @@ comment "At least one emulation must be selected"
 
 config FPE_NWFPE
 	bool "NWFPE math emulation"
-	depends on !AEABI || OABI_COMPAT
+	depends on (!AEABI || OABI_COMPAT) && !THUMB2_KERNEL
 	---help---
 	  Say Y to include the NWFPE floating point emulator in the kernel.
 	  This is necessary to run most binaries. Linux does not currently

arch/arm/Kconfig.debug

@@ -23,7 +23,7 @@ config STRICT_DEVMEM
 config FRAME_POINTER
 	bool
 	depends on !THUMB2_KERNEL
-	default y if !ARM_UNWIND
+	default y if !ARM_UNWIND || FUNCTION_GRAPH_TRACER
 	help
 	  If you say N here, the resulting kernel will be slightly smaller and
 	  faster. However, if neither FRAME_POINTER nor ARM_UNWIND are enabled,
@@ -31,7 +31,7 @@ config FRAME_POINTER
 	  reported is severely limited.
 
 config ARM_UNWIND
-	bool "Enable stack unwinding support"
+	bool "Enable stack unwinding support (EXPERIMENTAL)"
 	depends on AEABI && EXPERIMENTAL
 	default y
 	help

arch/arm/Makefile

@@ -154,10 +154,11 @@ machine-$(CONFIG_ARCH_MSM)		:= msm
 machine-$(CONFIG_ARCH_MV78XX0)		:= mv78xx0
 machine-$(CONFIG_ARCH_MX1)		:= imx
 machine-$(CONFIG_ARCH_MX2)		:= imx
-machine-$(CONFIG_ARCH_MX25)		:= mx25
+machine-$(CONFIG_ARCH_MX25)		:= imx
 machine-$(CONFIG_ARCH_MX3)		:= mx3
 machine-$(CONFIG_ARCH_MX5)		:= mx5
 machine-$(CONFIG_ARCH_MXC91231)		:= mxc91231
+machine-$(CONFIG_ARCH_MXS)		:= mxs
 machine-$(CONFIG_ARCH_NETX)		:= netx
 machine-$(CONFIG_ARCH_NOMADIK)		:= nomadik
 machine-$(CONFIG_ARCH_NS9XXX)		:= ns9xxx

arch/arm/boot/Makefile

@@ -70,12 +70,7 @@ else
 $(obj)/uImage: LOADADDR=$(ZRELADDR)
 endif
 
-ifeq ($(CONFIG_THUMB2_KERNEL),y)
-# Set bit 0 to 1 so that "mov pc, rx" switches to Thumb-2 mode
-$(obj)/uImage: STARTADDR=$(shell echo $(LOADADDR) | sed -e "s/.$$/1/")
-else
 $(obj)/uImage: STARTADDR=$(LOADADDR)
-endif
 
 $(obj)/uImage:	$(obj)/zImage FORCE
 	$(call if_changed,uimage)

arch/arm/boot/bootp/init.S

@@ -73,6 +73,8 @@ move:		ldmia	r4!, {r7 - r10}		@ move 32-bytes at a time
 
 		.size	_start, . - _start
 
+		.align
+
 		.type	data,#object
 data:		.word	initrd_start		@ source initrd address
 		.word	initrd_phys		@ destination initrd address

arch/arm/boot/compressed/Makefile

@@ -45,6 +45,10 @@ else
 endif
 endif
 
+ifeq ($(CONFIG_ARCH_SHMOBILE),y)
+OBJS		+= head-shmobile.o
+endif
+
 #
 # We now have a PIC decompressor implementation.  Decompressors running
 # from RAM should not define ZTEXTADDR.  Decompressors running directly