Merge pull request torvalds#455 from libos-nuse/merge-4.18

Merge 4.18

Author: thehajime

.mailmap

@@ -186,6 +186,9 @@ Uwe Kleine-König <[email protected]>
 Uwe Kleine-König <[email protected]>
 Uwe Kleine-König <[email protected]>
 Valdis Kletnieks <[email protected]>
+Vinod Koul <[email protected]> <[email protected]>
+Vinod Koul <[email protected]> <[email protected]>
+Vinod Koul <[email protected]> <[email protected]>
 Viresh Kumar <[email protected]> <[email protected]>
 Viresh Kumar <[email protected]> <[email protected]>
 Viresh Kumar <[email protected]> <[email protected]>

Documentation/00-INDEX

@@ -64,8 +64,6 @@ auxdisplay/
 	- misc. LCD driver documentation (cfag12864b, ks0108).
 backlight/
 	- directory with info on controlling backlights in flat panel displays
-bcache.txt
-	- Block-layer cache on fast SSDs to improve slow (raid) I/O performance.
 block/
 	- info on the Block I/O (BIO) layer.
 blockdev/
@@ -78,18 +76,10 @@ bus-devices/
 	- directory with info on TI GPMC (General Purpose Memory Controller)
 bus-virt-phys-mapping.txt
 	- how to access I/O mapped memory from within device drivers.
-cachetlb.txt
-	- describes the cache/TLB flushing interfaces Linux uses.
 cdrom/
 	- directory with information on the CD-ROM drivers that Linux has.
 cgroup-v1/
 	- cgroups v1 features, including cpusets and memory controller.
-cgroup-v2.txt
-	- cgroups v2 features, including cpusets and memory controller.
-circular-buffers.txt
-	- how to make use of the existing circular buffer infrastructure
-clk.txt
-	- info on the common clock framework
 cma/
 	- Continuous Memory Area (CMA) debugfs interface.
 conf.py

Documentation/ABI/obsolete/sysfs-gpio

@@ -11,7 +11,7 @@ Description:
   Kernel code may export it for complete or partial access.
 
   GPIOs are identified as they are inside the kernel, using integers in
-  the range 0..INT_MAX.  See Documentation/gpio/gpio.txt for more information.
+  the range 0..INT_MAX.  See Documentation/gpio for more information.
 
     /sys/class/gpio
 	/export ... asks the kernel to export a GPIO to userspace

Documentation/ABI/removed/sysfs-bus-nfit

@@ -0,0 +1,17 @@
+What:		/sys/bus/nd/devices/regionX/nfit/ecc_unit_size
+Date:		Aug, 2017
+KernelVersion:	v4.14 (Removed v4.18)
+Contact:	[email protected]
+Description:
+		(RO) Size of a write request to a DIMM that will not incur a
+		read-modify-write cycle at the memory controller.
+
+		When the nfit driver initializes it runs an ARS (Address Range
+		Scrub) operation across every pmem range. Part of that process
+		involves determining the ARS capabilities of a given address
+		range. One of the capabilities that is reported is the 'Clear
+		Uncorrectable Error Range Length Unit Size' (see: ACPI 6.2
+		section 9.20.7.4 Function Index 1 - Query ARS Capabilities).
+		This property indicates the boundary at which the NVDIMM may
+		need to perform read-modify-write cycles to maintain ECC (Error
+		Correcting Code) blocks.

Documentation/ABI/stable/sysfs-bus-vmbus

@@ -1,25 +1,25 @@
-What:		/sys/bus/vmbus/devices/vmbus_*/id
+What:		/sys/bus/vmbus/devices/<UUID>/id
 Date:		Jul 2009
 KernelVersion:	2.6.31
 Contact:	K. Y. Srinivasan <[email protected]>
 Description:	The VMBus child_relid of the device's primary channel
 Users:		tools/hv/lsvmbus
 
-What:		/sys/bus/vmbus/devices/vmbus_*/class_id
+What:		/sys/bus/vmbus/devices/<UUID>/class_id
 Date:		Jul 2009
 KernelVersion:	2.6.31
 Contact:	K. Y. Srinivasan <[email protected]>
 Description:	The VMBus interface type GUID of the device
 Users:		tools/hv/lsvmbus
 
-What:		/sys/bus/vmbus/devices/vmbus_*/device_id
+What:		/sys/bus/vmbus/devices/<UUID>/device_id
 Date:		Jul 2009
 KernelVersion:	2.6.31
 Contact:	K. Y. Srinivasan <[email protected]>
 Description:	The VMBus interface instance GUID of the device
 Users:		tools/hv/lsvmbus
 
-What:		/sys/bus/vmbus/devices/vmbus_*/channel_vp_mapping
+What:		/sys/bus/vmbus/devices/<UUID>/channel_vp_mapping
 Date:		Jul 2015
 KernelVersion:	4.2.0
 Contact:	K. Y. Srinivasan <[email protected]>
@@ -28,112 +28,112 @@ Description:	The mapping of which primary/sub channels are bound to which
 		Format: <channel's child_relid:the bound cpu's number>
 Users:		tools/hv/lsvmbus
 
-What:		/sys/bus/vmbus/devices/vmbus_*/device
+What:		/sys/bus/vmbus/devices/<UUID>/device
 Date:		Dec. 2015
 KernelVersion:	4.5
 Contact:	K. Y. Srinivasan <[email protected]>
 Description:	The 16 bit device ID of the device
 Users:		tools/hv/lsvmbus and user level RDMA libraries
 
-What:		/sys/bus/vmbus/devices/vmbus_*/vendor
+What:		/sys/bus/vmbus/devices/<UUID>/vendor
 Date:		Dec. 2015
 KernelVersion:	4.5
 Contact:	K. Y. Srinivasan <[email protected]>
 Description:	The 16 bit vendor ID of the device
 Users:		tools/hv/lsvmbus and user level RDMA libraries
 
-What:		/sys/bus/vmbus/devices/vmbus_*/channels/NN
+What:		/sys/bus/vmbus/devices/<UUID>/channels/<N>
 Date:		September. 2017
 KernelVersion:	4.14
 Contact:	Stephen Hemminger <[email protected]>
 Description:	Directory for per-channel information
 		NN is the VMBUS relid associtated with the channel.
 
-What:		/sys/bus/vmbus/devices/vmbus_*/channels/NN/cpu
+What:		/sys/bus/vmbus/devices/<UUID>/channels/<N>/cpu
 Date:		September. 2017
 KernelVersion:	4.14
 Contact:	Stephen Hemminger <[email protected]>
 Description:	VCPU (sub)channel is affinitized to
 Users:		tools/hv/lsvmbus and other debugging tools
 
-What:		/sys/bus/vmbus/devices/vmbus_*/channels/NN/cpu
+What:		/sys/bus/vmbus/devices/<UUID>/channels/<N>/cpu
 Date:		September. 2017
 KernelVersion:	4.14
 Contact:	Stephen Hemminger <[email protected]>
 Description:	VCPU (sub)channel is affinitized to
 Users:		tools/hv/lsvmbus and other debugging tools
 
-What:		/sys/bus/vmbus/devices/vmbus_*/channels/NN/in_mask
+What:		/sys/bus/vmbus/devices/<UUID>/channels/<N>/in_mask
 Date:		September. 2017
 KernelVersion:	4.14
 Contact:	Stephen Hemminger <[email protected]>
 Description:	Host to guest channel interrupt mask
 Users:		Debugging tools
 
-What:		/sys/bus/vmbus/devices/vmbus_*/channels/NN/latency
+What:		/sys/bus/vmbus/devices/<UUID>/channels/<N>/latency
 Date:		September. 2017
 KernelVersion:	4.14
 Contact:	Stephen Hemminger <[email protected]>
 Description:	Channel signaling latency
 Users:		Debugging tools
 
-What:		/sys/bus/vmbus/devices/vmbus_*/channels/NN/out_mask
+What:		/sys/bus/vmbus/devices/<UUID>/channels/<N>/out_mask
 Date:		September. 2017
 KernelVersion:	4.14
 Contact:	Stephen Hemminger <[email protected]>
 Description:	Guest to host channel interrupt mask
 Users:		Debugging tools
 
-What:		/sys/bus/vmbus/devices/vmbus_*/channels/NN/pending
+What:		/sys/bus/vmbus/devices/<UUID>/channels/<N>/pending
 Date:		September. 2017
 KernelVersion:	4.14
 Contact:	Stephen Hemminger <[email protected]>
 Description:	Channel interrupt pending state
 Users:		Debugging tools
 
-What:		/sys/bus/vmbus/devices/vmbus_*/channels/NN/read_avail
+What:		/sys/bus/vmbus/devices/<UUID>/channels/<N>/read_avail
 Date:		September. 2017
 KernelVersion:	4.14
 Contact:	Stephen Hemminger <[email protected]>
 Description:	Bytes available to read
 Users:		Debugging tools
 
-What:		/sys/bus/vmbus/devices/vmbus_*/channels/NN/write_avail
+What:		/sys/bus/vmbus/devices/<UUID>/channels/<N>/write_avail
 Date:		September. 2017
 KernelVersion:	4.14
 Contact:	Stephen Hemminger <[email protected]>
 Description:	Bytes available to write
 Users:		Debugging tools
 
-What:		/sys/bus/vmbus/devices/vmbus_*/channels/NN/events
+What:		/sys/bus/vmbus/devices/<UUID>/channels/<N>/events
 Date:		September. 2017
 KernelVersion:	4.14
 Contact:	Stephen Hemminger <[email protected]>
 Description:	Number of times we have signaled the host
 Users:		Debugging tools
 
-What:		/sys/bus/vmbus/devices/vmbus_*/channels/NN/interrupts
+What:		/sys/bus/vmbus/devices/<UUID>/channels/<N>/interrupts
 Date:		September. 2017
 KernelVersion:	4.14
 Contact:	Stephen Hemminger <[email protected]>
 Description:	Number of times we have taken an interrupt (incoming)
 Users:		Debugging tools
 
-What:		/sys/bus/vmbus/devices/vmbus_*/channels/NN/subchannel_id
+What:		/sys/bus/vmbus/devices/<UUID>/channels/<N>/subchannel_id
 Date:		January. 2018
 KernelVersion:	4.16
 Contact:	Stephen Hemminger <[email protected]>
 Description:	Subchannel ID associated with VMBUS channel
 Users:		Debugging tools and userspace drivers
 
-What:		/sys/bus/vmbus/devices/vmbus_*/channels/NN/monitor_id
+What:		/sys/bus/vmbus/devices/<UUID>/channels/<N>/monitor_id
 Date:		January. 2018
 KernelVersion:	4.16
 Contact:	Stephen Hemminger <[email protected]>
 Description:	Monitor bit associated with channel
 Users:		Debugging tools and userspace drivers
 
-What:		/sys/bus/vmbus/devices/vmbus_*/channels/NN/ring
+What:		/sys/bus/vmbus/devices/<UUID>/channels/<N>/ring
 Date:		January. 2018
 KernelVersion:	4.16
 Contact:	Stephen Hemminger <[email protected]>

Documentation/ABI/stable/sysfs-devices-node

@@ -90,4 +90,4 @@ Date:		December 2009
 Contact:	Lee Schermerhorn <[email protected]>
 Description:
 		The node's huge page size control/query attributes.
-		See Documentation/vm/hugetlbpage.txt
+		See Documentation/admin-guide/mm/hugetlbpage.rst

Documentation/ABI/testing/evm

@@ -57,3 +57,16 @@ Description:
 		dracut (via 97masterkey and 98integrity) and systemd (via
 		core/ima-setup) have support for loading keys at boot
 		time.
+
+What:		security/integrity/evm/evm_xattrs
+Date:		April 2018
+Contact:	Matthew Garrett <[email protected]>
+Description:
+		Shows the set of extended attributes used to calculate or
+		validate the EVM signature, and allows additional attributes
+		to be added at runtime. Any signatures generated after
+		additional attributes are added (and on files posessing those
+		additional attributes) will only be valid if the same
+		additional attributes are configured on system boot. Writing
+		a single period (.) will lock the xattr list from any further
+		modification.

Documentation/ABI/testing/ima_policy

@@ -21,7 +21,7 @@ Description:
 			audit | hash | dont_hash
 		condition:= base | lsm  [option]
 			base:	[[func=] [mask=] [fsmagic=] [fsuuid=] [uid=]
-				[euid=] [fowner=]]
+				[euid=] [fowner=] [fsname=]]
 			lsm:	[[subj_user=] [subj_role=] [subj_type=]
 				 [obj_user=] [obj_role=] [obj_type=]]
 			option:	[[appraise_type=]] [permit_directio]

Documentation/ABI/testing/sysfs-bus-iio

@@ -190,6 +190,13 @@ Description:
 		but should match other such assignments on device).
 		Units after application of scale and offset are m/s^2.
 
+What:		/sys/bus/iio/devices/iio:deviceX/in_angl_raw
+KernelVersion:	4.17
+Contact:	[email protected]
+Description:
+		Angle of rotation. Units after application of scale and offset
+		are radians.
+
 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
@@ -297,6 +304,7 @@ What:		/sys/bus/iio/devices/iio:deviceX/in_pressure_offset
 What:		/sys/bus/iio/devices/iio:deviceX/in_humidityrelative_offset
 What:		/sys/bus/iio/devices/iio:deviceX/in_magn_offset
 What:		/sys/bus/iio/devices/iio:deviceX/in_rot_offset
+What:		/sys/bus/iio/devices/iio:deviceX/in_angl_offset
 KernelVersion:	2.6.35
 Contact:	[email protected]
 Description:
@@ -350,6 +358,7 @@ What:		/sys/bus/iio/devices/iio:deviceX/in_humidityrelative_scale
 What:		/sys/bus/iio/devices/iio:deviceX/in_velocity_sqrt(x^2+y^2+z^2)_scale
 What:		/sys/bus/iio/devices/iio:deviceX/in_illuminance_scale
 What:		/sys/bus/iio/devices/iio:deviceX/in_countY_scale
+What:		/sys/bus/iio/devices/iio:deviceX/in_angl_scale
 KernelVersion:	2.6.35
 Contact:	[email protected]
 Description:

Documentation/ABI/testing/sysfs-bus-nfit

@@ -212,22 +212,3 @@ Description:
 		range. Used by NVDIMM Region Mapping Structure to uniquely refer
 		to this structure. Value of 0 is reserved and not used as an
 		index.
-
-
-What:		/sys/bus/nd/devices/regionX/nfit/ecc_unit_size
-Date:		Aug, 2017
-KernelVersion:	v4.14
-Contact:	[email protected]
-Description:
-		(RO) Size of a write request to a DIMM that will not incur a
-		read-modify-write cycle at the memory controller.
-
-		When the nfit driver initializes it runs an ARS (Address Range
-		Scrub) operation across every pmem range. Part of that process
-		involves determining the ARS capabilities of a given address
-		range. One of the capabilities that is reported is the 'Clear
-		Uncorrectable Error Range Length Unit Size' (see: ACPI 6.2
-		section 9.20.7.4 Function Index 1 - Query ARS Capabilities).
-		This property indicates the boundary at which the NVDIMM may
-		need to perform read-modify-write cycles to maintain ECC (Error
-		Correcting Code) blocks.

Documentation/ABI/testing/sysfs-bus-rpmsg

@@ -73,3 +73,23 @@ Description:
 		This sysfs entry tells us whether the channel is a local
 		server channel that is announced (values are either
 		true or false).
+
+What:		/sys/bus/rpmsg/devices/.../driver_override
+Date:		April 2018
+KernelVersion:	4.18
+Contact:	Bjorn Andersson <[email protected]>
+Description:
+		Every rpmsg device is a communication channel with a remote
+		processor. Channels are identified by a textual name (see
+		/sys/bus/rpmsg/devices/.../name above) and have a local
+		("source") rpmsg address, and remote ("destination") rpmsg
+		address.
+
+		The listening entity (or client) which communicates with a
+		remote processor is referred as rpmsg driver. The rpmsg device
+		and rpmsg driver are matched based on rpmsg device name and
+		rpmsg driver ID table.
+
+		This sysfs entry allows the rpmsg driver for a rpmsg device
+		to be specified which will override standard OF, ID table
+		and name matching.

Documentation/ABI/testing/sysfs-bus-usb

@@ -189,6 +189,28 @@ Description:
 		The file will read "hotplug", "wired" and "not used" if the
 		information is available, and "unknown" otherwise.
 
+What:		/sys/bus/usb/devices/.../(hub interface)/portX/quirks
+Date:		May 2018
+Contact:	Nicolas Boichat <[email protected]>
+Description:
+		In some cases, we care about time-to-active for devices
+		connected on a specific port (e.g. non-standard USB port like
+		pogo pins), where the device to be connected is known in
+		advance, and behaves well according to the specification.
+		This attribute is a bit-field that controls the behavior of
+		a specific port:
+		 - Bit 0 of this field selects the "old" enumeration scheme,
+		   as it is considerably faster (it only causes one USB reset
+		   instead of 2).
+		   The old enumeration scheme can also be selected globally
+		   using /sys/module/usbcore/parameters/old_scheme_first, but
+		   it is often not desirable as the new scheme was introduced to
+		   increase compatibility with more devices.
+		 - Bit 1 reduces TRSTRCY to the 10 ms that are required by the
+		   USB 2.0 specification, instead of the 50 ms that are normally
+		   used to help make enumeration work better on some high speed
+		   devices.
+
 What:		/sys/bus/usb/devices/.../(hub interface)/portX/over_current_count
 Date:		February 2018
 Contact:	Richard Leitner <[email protected]>
@@ -236,3 +258,21 @@ Description:
 		Supported values are 0 - 15.
 		More information on how besl values map to microseconds can be found in
 		USB 2.0 ECN Errata for Link Power Management, section 4.10)
+
+What:		/sys/bus/usb/devices/.../rx_lanes
+Date:		March 2018
+Contact:	Mathias Nyman <[email protected]>
+Description:
+		Number of rx lanes the device is using.
+		USB 3.2 adds Dual-lane support, 2 rx and 2 tx lanes over Type-C.
+		Inter-Chip SSIC devices support asymmetric lanes up to 4 lanes per
+		direction. Devices before USB 3.2 are single lane (rx_lanes = 1)
+
+What:		/sys/bus/usb/devices/.../tx_lanes
+Date:		March 2018
+Contact:	Mathias Nyman <[email protected]>
+Description:
+		Number of tx lanes the device is using.
+		USB 3.2 adds Dual-lane support, 2 rx and 2 tx -lanes over Type-C.
+		Inter-Chip SSIC devices support asymmetric lanes up to 4 lanes per
+		direction. Devices before USB 3.2 are single lane (tx_lanes = 1)

Documentation/ABI/testing/sysfs-class-cxl

@@ -69,7 +69,9 @@ Date:           September 2014
 Contact:        [email protected]
 Description:    read/write
                 Set the mode for prefaulting in segments into the segment table
-                when performing the START_WORK ioctl. Possible values:
+                when performing the START_WORK ioctl. Only applicable when
+                running under hashed page table mmu.
+                Possible values:
                         none: No prefaulting (default)
                         work_element_descriptor: Treat the work element
                                  descriptor as an effective address and