Merge pull request torvalds#458 from libos-nuse/merge-4.19

Merge 4.19

.clang-format

@@ -382,7 +382,7 @@ IncludeIsMainRegex: '(Test)?$'
 IndentCaseLabels: false
 #IndentPPDirectives: None # Unknown to clang-format-5.0
 IndentWidth: 8
-IndentWrappedFunctionNames: true
+IndentWrappedFunctionNames: false
 JavaScriptQuotes: Leave
 JavaScriptWrapImports: true
 KeepEmptyLinesAtTheStartOfBlocks: false

.mailmap

@@ -31,6 +31,8 @@ Arnaud Patard <arnaud.patard@rtp-net.org>
 Arnd Bergmann <arnd@arndb.de>
 Axel Dyks <xl@xlsigned.net>
 Axel Lin <axel.lin@gmail.com>
+Bart Van Assche <bvanassche@acm.org> <bart.vanassche@wdc.com>
+Bart Van Assche <bvanassche@acm.org> <bart.vanassche@sandisk.com>
 Ben Gardner <bgardner@wabtec.com>
 Ben M Cahill <ben.m.cahill@intel.com>
 Björn Steinbrink <B.Steinbrink@gmx.de>
@@ -81,6 +83,9 @@ Javi Merino <javi.merino@kernel.org> <javi.merino@arm.com>
 <javier@osg.samsung.com> <javier.martinez@collabora.co.uk>
 Jean Tourrilhes <jt@hpl.hp.com>
 Jeff Garzik <jgarzik@pretzel.yyz.us>
+Jeff Layton <jlayton@kernel.org> <jlayton@redhat.com>
+Jeff Layton <jlayton@kernel.org> <jlayton@poochiereds.net>
+Jeff Layton <jlayton@kernel.org> <jlayton@primarydata.com>
 Jens Axboe <axboe@suse.de>
 Jens Osterkamp <Jens.Osterkamp@de.ibm.com>
 Johan Hovold <johan@kernel.org> <jhovold@gmail.com>
@@ -154,6 +159,7 @@ Ralf Wildenhues <Ralf.Wildenhues@gmx.de>
 Randy Dunlap <rdunlap@infradead.org> <rdunlap@xenotime.net>
 Rémi Denis-Courmont <rdenis@simphalempin.com>
 Ricardo Ribalda Delgado <ricardo.ribalda@gmail.com>
+Ross Zwisler <zwisler@kernel.org> <ross.zwisler@linux.intel.com>
 Rudolf Marek <R.Marek@sh.cvut.cz>
 Rui Saraiva <rmps@joel.ist.utl.pt>
 Sachin P Sant <ssant@in.ibm.com>

CREDITS

@@ -2571,6 +2571,11 @@ S: Helstorfer Str. 7
 S: D-30625 Hannover
 S: Germany
 
+N: Ron Minnich
+E: rminnich@sandia.gov
+E: rminnich@gmail.com
+D: 9p filesystem development
+
 N: Corey Minyard
 E: minyard@wf-rch.cirr.com
 E: minyard@mvista.com

Documentation/ABI/obsolete/sysfs-class-typec

@@ -0,0 +1,48 @@
+These files are deprecated and will be removed. The same files are available
+under /sys/bus/typec (see Documentation/ABI/testing/sysfs-bus-typec).
+
+What:		/sys/class/typec/<port|partner|cable>/<dev>/svid
+Date:		April 2017
+Contact:	Heikki Krogerus <heikki.krogerus@linux.intel.com>
+Description:
+		The SVID (Standard or Vendor ID) assigned by USB-IF for this
+		alternate mode.
+
+What:		/sys/class/typec/<port|partner|cable>/<dev>/mode<index>/
+Date:		April 2017
+Contact:	Heikki Krogerus <heikki.krogerus@linux.intel.com>
+Description:
+		Every supported mode will have its own directory. The name of
+		a mode will be "mode<index>" (for example mode1), where <index>
+		is the actual index to the mode VDO returned by Discover Modes
+		USB power delivery command.
+
+What:		/sys/class/typec/<port|partner|cable>/<dev>/mode<index>/description
+Date:		April 2017
+Contact:	Heikki Krogerus <heikki.krogerus@linux.intel.com>
+Description:
+		Shows description of the mode. The description is optional for
+		the drivers, just like with the Billboard Devices.
+
+What:		/sys/class/typec/<port|partner|cable>/<dev>/mode<index>/vdo
+Date:		April 2017
+Contact:	Heikki Krogerus <heikki.krogerus@linux.intel.com>
+Description:
+		Shows the VDO in hexadecimal returned by Discover Modes command
+		for this mode.
+
+What:		/sys/class/typec/<port|partner|cable>/<dev>/mode<index>/active
+Date:		April 2017
+Contact:	Heikki Krogerus <heikki.krogerus@linux.intel.com>
+Description:
+		Shows if the mode is active or not. The attribute can be used
+		for entering/exiting the mode with partners and cable plugs, and
+		with the port alternate modes it can be used for disabling
+		support for specific alternate modes. Entering/exiting modes is
+		supported as synchronous operation so write(2) to the attribute
+		does not return until the enter/exit mode operation has
+		finished. The attribute is notified when the mode is
+		entered/exited so poll(2) on the attribute wakes up.
+		Entering/exiting a mode will also generate uevent KOBJ_CHANGE.
+
+		Valid values: yes, no

Documentation/ABI/stable/sysfs-bus-vmbus

@@ -42,6 +42,13 @@ Contact:	K. Y. Srinivasan <kys@microsoft.com>
 Description:	The 16 bit vendor ID of the device
 Users:		tools/hv/lsvmbus and user level RDMA libraries
 
+What:		/sys/bus/vmbus/devices/<UUID>/numa_node
+Date:		Jul 2018
+KernelVersion:	4.19
+Contact:	Stephen Hemminger <sthemmin@microsoft.com>
+Description:	This NUMA node to which the VMBUS device is
+		attached, or -1 if the node is unknown.
+
 What:		/sys/bus/vmbus/devices/<UUID>/channels/<N>
 Date:		September. 2017
 KernelVersion:	4.14

Documentation/ABI/stable/sysfs-bus-xen-backend

@@ -73,3 +73,12 @@ KernelVersion:	3.0
 Contact:	Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
 Description:
                 Number of sectors written by the frontend.
+
+What:		/sys/bus/xen-backend/devices/*/state
+Date:		August 2018
+KernelVersion:	4.19
+Contact:	Joe Jin <joe.jin@oracle.com>
+Description:
+                The state of the device. One of: 'Unknown',
+                'Initialising', 'Initialised', 'Connected', 'Closing',
+                'Closed', 'Reconfiguring', 'Reconfigured'.

Documentation/ABI/stable/sysfs-class-rfkill

@@ -11,7 +11,7 @@ KernelVersion:	v2.6.22
 Contact:	linux-wireless@vger.kernel.org,
 Description: 	The rfkill class subsystem folder.
 		Each registered rfkill driver is represented by an rfkillX
-		subfolder (X being an integer > 0).
+		subfolder (X being an integer >= 0).
 
 
 What:		/sys/class/rfkill/rfkill[0-9]+/name
@@ -48,8 +48,8 @@ Contact:	linux-wireless@vger.kernel.org
 Description: 	Current state of the transmitter.
 		This file was scheduled to be removed in 2014, but due to its
 		large number of users it will be sticking around for a bit
-		longer. Despite it being marked as stabe, the newer "hard" and
-		"soft" interfaces should be preffered, since it is not possible
+		longer. Despite it being marked as stable, the newer "hard" and
+		"soft" interfaces should be preferred, since it is not possible
 		to express the 'soft and hard block' state of the rfkill driver
 		through this interface. There will likely be another attempt to
 		remove it in the future.

Documentation/ABI/stable/sysfs-devices-system-xen_memory

@@ -75,3 +75,12 @@ Contact:	Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
 Description:
 		Amount (in KiB) of low (or normal) memory in the
 		balloon.
+
+What:		/sys/devices/system/xen_memory/xen_memory0/scrub_pages
+Date:		September 2018
+KernelVersion:	4.20
+Contact:	xen-devel@lists.xenproject.org
+Description:
+		Control scrubbing pages before returning them to Xen for others domains
+		use. Can be set with xen_scrub_pages cmdline
+		parameter. Default value controlled with CONFIG_XEN_SCRUB_PAGES_DEFAULT.

Documentation/ABI/stable/sysfs-driver-mlxreg-io

@@ -0,0 +1,78 @@
+What:		/sys/devices/platform/mlxplat/mlxreg-io/hwmon/hwmon*/
+							asic_health
+
+Date:		June 2018
+KernelVersion:	4.19
+Contact:	Vadim Pasternak <vadimpmellanox.com>
+Description:	This file shows ASIC health status. The possible values are:
+		0 - health failed, 2 - health OK, 3 - ASIC in booting state.
+
+		The files are read only.
+
+What:		/sys/devices/platform/mlxplat/mlxreg-io/hwmon/hwmon*/
+							cpld1_version
+							cpld2_version
+
+Date:		June 2018
+KernelVersion:	4.19
+Contact:	Vadim Pasternak <vadimpmellanox.com>
+Description:	These files show with which CPLD versions have been burned
+		on carrier and switch boards.
+
+		The files are read only.
+
+What:		/sys/devices/platform/mlxplat/mlxreg-io/hwmon/hwmon*/select_iio
+Date:		June 2018
+KernelVersion:	4.19
+Contact:	Vadim Pasternak <vadimpmellanox.com>
+Description:	This file allows iio devices selection.
+
+		Attribute select_iio can be written with 0 or with 1. It
+		selects which one of iio devices can be accessed.
+
+		The file is read/write.
+
+What:		/sys/devices/platform/mlxplat/mlxreg-io/hwmon/hwmon*/psu1_on
+		/sys/devices/platform/mlxplat/mlxreg-io/hwmon/hwmon*/psu2_on
+		/sys/devices/platform/mlxplat/mlxreg-io/hwmon/hwmon*/pwr_cycle
+		/sys/devices/platform/mlxplat/mlxreg-io/hwmon/hwmon*/pwr_down
+Date:		June 2018
+KernelVersion:	4.19
+Contact:	Vadim Pasternak <vadimpmellanox.com>
+Description:	These files allow asserting system power cycling, switching
+		power supply units on and off and system's main power domain
+		shutdown.
+		Expected behavior:
+		When pwr_cycle is written 1: auxiliary power domain will go
+		down and after short period (about 1 second) up.
+		When  psu1_on or psu2_on is written 1, related unit will be
+		disconnected from the power source, when written 0 - connected.
+		If both are written 1 - power supplies main power domain will
+		go down.
+		When pwr_down is written 1, system's main power domain will go
+		down.
+
+		The files are write only.
+
+What:		/sys/devices/platform/mlxplat/mlxreg-io/hwmon/hwmon*/
+							reset_aux_pwr_or_ref
+							reset_asic_thermal
+							reset_hotswap_or_halt
+							reset_hotswap_or_wd
+							reset_fw_reset
+							reset_long_pb
+							reset_main_pwr_fail
+							reset_short_pb
+							reset_sw_reset
+Date:		June 2018
+KernelVersion:	4.19
+Contact:	Vadim Pasternak <vadimpmellanox.com>
+Description:	These files show the system reset cause, as following: power
+		auxiliary outage or power refresh, ASIC thermal shutdown, halt,
+		hotswap, watchdog, firmware reset, long press power button,
+		short press power button, software reset. Value 1 in file means
+		this is reset cause, 0 - otherwise. Only one of the above
+		causes could be 1 at the same time, representing only last
+		reset cause.
+
+		The files are read only.

Documentation/ABI/testing/configfs-usb-gadget-uvc

@@ -263,3 +263,8 @@ Description:	Specific streaming header descriptors
 					is connected
 		bmInfo			- capabilities of this video streaming
 					interface
+
+What:		/sys/class/udc/udc.name/device/gadget/video4linux/video.name/function_name
+Date:		May 2018
+KernelVersion:	4.19
+Description:	UVC configfs function instance name

Documentation/ABI/testing/ppc-memtrace

@@ -13,10 +13,11 @@ Contact:	linuxppc-dev@lists.ozlabs.org
 Description:	Write an integer containing the size in bytes of the memory
 		you want removed from each NUMA node to this file - it must be
 		aligned to the memblock size. This amount of RAM will be removed
-		from the kernel mappings and the following debugfs files will be
-		created. This can only be successfully done once per boot. Once
-		memory is successfully removed from each node, the following
-		files are created.
+		from each NUMA node in the kernel mappings and the following
+		debugfs files will be created. Once memory is successfully
+		removed from each node, the following files are created. To
+		re-add memory to the kernel, echo 0 into this file (it will be
+		automatically onlined).
 
 What:		/sys/kernel/debug/powerpc/memtrace/<node-id>
 Date:		Aug 2017

Documentation/ABI/testing/procfs-diskstats

@@ -5,6 +5,7 @@ Description:
 		The /proc/diskstats file displays the I/O statistics
 		of block devices. Each line contains the following 14
 		fields:
+
 		 1 - major number
 		 2 - minor mumber
 		 3 - device name
@@ -19,4 +20,13 @@ Description:
 		12 - I/Os currently in progress
 		13 - time spent doing I/Os (ms)
 		14 - weighted time spent doing I/Os (ms)
+
+		Kernel 4.18+ appends four more fields for discard
+		tracking putting the total at 18:
+
+		15 - discards completed successfully
+		16 - discards merged
+		17 - sectors discarded
+		18 - time spent discarding
+
 		For more details refer to Documentation/iostats.txt

Documentation/ABI/testing/sysfs-bus-coresight-devices-tmc

@@ -83,3 +83,11 @@ KernelVersion:	4.7
 Contact:	Mathieu Poirier <mathieu.poirier@linaro.org>
 Description:	(R) Indicates the capabilities of the Coresight TMC.
 		The value is read directly from the DEVID register, 0xFC8,
+
+What:		/sys/bus/coresight/devices/<memory_map>.tmc/buffer_size
+Date:		December 2018
+KernelVersion:	4.19
+Contact:	Mathieu Poirier <mathieu.poirier@linaro.org>
+Description:	(RW) Size of the trace buffer for TMC-ETR when used in SYSFS
+		mode. Writable only for TMC-ETR configurations. The value
+		should be aligned to the kernel pagesize.

Documentation/ABI/testing/sysfs-bus-iio

@@ -197,6 +197,18 @@ Description:
 		Angle of rotation. Units after application of scale and offset
 		are radians.
 
+What:		/sys/bus/iio/devices/iio:deviceX/in_positionrelative_x_raw
+What:		/sys/bus/iio/devices/iio:deviceX/in_positionrelative_y_raw
+KernelVersion:	4.18
+Contact:	linux-iio@vger.kernel.org
+Description:
+		Relative position in direction x or y on a pad (may be
+		arbitrarily assigned but should match other such assignments on
+		device).
+		Units after application of scale and offset are milli percents
+		from the pad's size in both directions. Should be calibrated by
+		the consumer.
+
 What:		/sys/bus/iio/devices/iio:deviceX/in_anglvel_x_raw
 What:		/sys/bus/iio/devices/iio:deviceX/in_anglvel_y_raw
 What:		/sys/bus/iio/devices/iio:deviceX/in_anglvel_z_raw
@@ -1295,13 +1307,16 @@ What:		/sys/.../iio:deviceX/in_intensityY_raw
 What:		/sys/.../iio:deviceX/in_intensityY_ir_raw
 What:		/sys/.../iio:deviceX/in_intensityY_both_raw
 What:		/sys/.../iio:deviceX/in_intensityY_uv_raw
+What:		/sys/.../iio:deviceX/in_intensityY_duv_raw
 KernelVersion:	3.4
 Contact:	linux-iio@vger.kernel.org
 Description:
 		Unit-less light intensity. Modifiers both and ir indicate
 		that measurements contain visible and infrared light
-		components or just infrared light, respectively. Modifier uv indicates
-		that measurements contain ultraviolet light components.
+		components or just infrared light, respectively. Modifier
+		uv indicates that measurements contain ultraviolet light
+		components. Modifier duv indicates that measurements
+		contain deep ultraviolet light components.
 
 What:		/sys/.../iio:deviceX/in_uvindex_input
 KernelVersion:	4.6
@@ -1663,3 +1678,10 @@ KernelVersion:	4.12
 Contact:	linux-iio@vger.kernel.org
 Description:
 		Raw counter device counters direction for channel Y.
+
+What:		/sys/bus/iio/devices/iio:deviceX/in_phaseY_raw
+KernelVersion:	4.18
+Contact:	linux-iio@vger.kernel.org
+Description:
+		Raw (unscaled) phase difference reading from channel Y
+		that can be processed to radians.

Documentation/ABI/testing/sysfs-bus-iio-isl29501

@@ -0,0 +1,47 @@
+What:		/sys/bus/iio/devices/iio:deviceX/in_proximity0_agc_gain
+What:		/sys/bus/iio/devices/iio:deviceX/in_proximity0_agc_gain_bias
+KernelVersion:	4.18
+Contact:	linux-iio@vger.kernel.org
+Description:
+		This sensor has an automatic gain control (agc) loop
+		which sets the analog signal levels at an optimum
+		level by controlling programmable gain amplifiers. The
+		criteria for optimal gain is determined by the sensor.
+
+		Return the actual gain value as an integer in [0; 65536]
+		range when read from.
+
+		The agc gain read when measuring crosstalk shall be
+		written into in_proximity0_agc_gain_bias.
+
+What:		/sys/bus/iio/devices/iio:deviceX/in_proximity0_calib_phase_temp_a
+What:		/sys/bus/iio/devices/iio:deviceX/in_proximity0_calib_phase_temp_b
+What:		/sys/bus/iio/devices/iio:deviceX/in_proximity0_calib_phase_light_a
+What:		/sys/bus/iio/devices/iio:deviceX/in_proximity0_calib_phase_light_b
+KernelVersion:	4.18
+Contact:	linux-iio@vger.kernel.org
+Description:
+		The sensor is able to perform correction of distance
+		measurements due to changing temperature and ambient
+		light conditions. It can be programmed to correct for
+		a second order error polynomial.
+
+		Phase data has to be collected when temperature and
+		ambient light are modulated independently.
+
+		Then a least squares curve fit to a second order
+		polynomial has to be generated from the data. The
+		resultant curves have the form ax^2 + bx + c.
+
+		From those two curves, a and b coefficients shall be
+		stored in in_proximity0_calib_phase_temp_a and
+		in_proximity0_calib_phase_temp_b for temperature and
+		in in_proximity0_calib_phase_light_a and
+		in_proximity0_calib_phase_light_b for ambient light.
+
+		Those values must be integer in [0; 8355840] range.
+
+		Finally, the c constant is set by the sensor
+		internally.
+
+		The value stored in sensor is displayed when read from.