Merge branches 'for-5.16/asus' and 'for-5.16/apple' into for-next

Documentation/ABI/stable/sysfs-driver-dma-idxd

@@ -128,6 +128,8 @@ Date:		Aug 28, 2020
 KernelVersion:	5.10.0
 Contact:	dmaengine@vger.kernel.org
 Description:	The last executed device administrative command's status/error.
+		Also last configuration error overloaded.
+		Writing to it will clear the status.
 
 What:		/sys/bus/dsa/devices/wq<m>.<n>/block_on_fault
 Date:		Oct 27, 2020
@@ -211,6 +213,13 @@ Contact:	dmaengine@vger.kernel.org
 Description:	Indicate whether ATS disable is turned on for the workqueue.
 		0 indicates ATS is on, and 1 indicates ATS is off for the workqueue.
 
+What:		/sys/bus/dsa/devices/wq<m>.<n>/occupancy
+Date		May 25, 2021
+KernelVersion:	5.14.0
+Contact:	dmaengine@vger.kernel.org
+Description:	Show the current number of entries in this WQ if WQ Occupancy
+		Support bit WQ capabilities is 1.
+
 What:           /sys/bus/dsa/devices/engine<m>.<n>/group_id
 Date:           Oct 25, 2019
 KernelVersion:  5.6.0

Documentation/ABI/testing/debugfs-driver-habanalabs

@@ -215,6 +215,17 @@ Description:    Sets the skip reset on timeout option for the device. Value of
                 "0" means device will be reset in case some CS has timed out,
                 otherwise it will not be reset.
 
+What:           /sys/kernel/debug/habanalabs/hl<n>/state_dump
+Date:           Oct 2021
+KernelVersion:  5.15
+Contact:        ynudelman@habana.ai
+Description:    Gets the state dump occurring on a CS timeout or failure.
+                State dump is used for debug and is created each time in case of
+                a problem in a CS execution, before reset.
+                Reading from the node returns the newest state dump available.
+                Writing an integer X discards X state dumps, so that the
+                next read would return X+1-st newest state dump.
+
 What:           /sys/kernel/debug/habanalabs/hl<n>/stop_on_err
 Date:           Mar 2020
 KernelVersion:  5.6
@@ -230,6 +241,14 @@ Description:    Displays a list with information about the currently user
                 pointers (user virtual addresses) that are pinned and mapped
                 to DMA addresses
 
+What:           /sys/kernel/debug/habanalabs/hl<n>/userptr_lookup
+Date:           Aug 2021
+KernelVersion:  5.15
+Contact:        ogabbay@kernel.org
+Description:    Allows to search for specific user pointers (user virtual
+                addresses) that are pinned and mapped to DMA addresses, and see
+                their resolution to the specific dma address.
+
 What:           /sys/kernel/debug/habanalabs/hl<n>/vm
 Date:           Jan 2019
 KernelVersion:  5.1

Documentation/ABI/testing/sysfs-bus-pci

@@ -121,6 +121,23 @@ Description:
 		child buses, and re-discover devices removed earlier
 		from this part of the device tree.
 
+What:		/sys/bus/pci/devices/.../reset_method
+Date:		August 2021
+Contact:	Amey Narkhede <ameynarkhede03@gmail.com>
+Description:
+		Some devices allow an individual function to be reset
+		without affecting other functions in the same slot.
+
+		For devices that have this support, a file named
+		reset_method is present in sysfs.  Reading this file
+		gives names of the supported and enabled reset methods and
+		their ordering.  Writing a space-separated list of names of
+		reset methods sets the reset methods and ordering to be
+		used when resetting the device.  Writing an empty string
+		disables the ability to reset the device.  Writing
+		"default" enables all supported reset methods in the
+		default ordering.
+
 What:		/sys/bus/pci/devices/.../reset
 Date:		July 2009
 Contact:	Michael S. Tsirkin <mst@redhat.com>

Documentation/ABI/testing/sysfs-driver-ufs

@@ -1298,3 +1298,239 @@ Description:	This node is used to set or display whether UFS WriteBooster is
 		(if the platform supports UFSHCD_CAP_CLK_SCALING). For a
 		platform that doesn't support UFSHCD_CAP_CLK_SCALING, we can
 		disable/enable WriteBooster through this sysfs node.
+
+What:		/sys/bus/platform/drivers/ufshcd/*/device_descriptor/hpb_version
+Date:		June 2021
+Contact:	Daejun Park <daejun7.park@samsung.com>
+Description:	This entry shows the HPB specification version.
+		The full information about the descriptor can be found in the UFS
+		HPB (Host Performance Booster) Extension specifications.
+		Example: version 1.2.3 = 0123h
+
+		The file is read only.
+
+What:		/sys/bus/platform/drivers/ufshcd/*/device_descriptor/hpb_control
+Date:		June 2021
+Contact:	Daejun Park <daejun7.park@samsung.com>
+Description:	This entry shows an indication of the HPB control mode.
+		00h: Host control mode
+		01h: Device control mode
+
+		The file is read only.
+
+What:		/sys/bus/platform/drivers/ufshcd/*/geometry_descriptor/hpb_region_size
+Date:		June 2021
+Contact:	Daejun Park <daejun7.park@samsung.com>
+Description:	This entry shows the bHPBRegionSize which can be calculated
+		as in the following (in bytes):
+		HPB Region size = 512B * 2^bHPBRegionSize
+
+		The file is read only.
+
+What:		/sys/bus/platform/drivers/ufshcd/*/geometry_descriptor/hpb_number_lu
+Date:		June 2021
+Contact:	Daejun Park <daejun7.park@samsung.com>
+Description:	This entry shows the maximum number of HPB LU supported	by
+		the device.
+		00h: HPB is not supported by the device.
+		01h ~ 20h: Maximum number of HPB LU supported by the device
+
+		The file is read only.
+
+What:		/sys/bus/platform/drivers/ufshcd/*/geometry_descriptor/hpb_subregion_size
+Date:		June 2021
+Contact:	Daejun Park <daejun7.park@samsung.com>
+Description:	This entry shows the bHPBSubRegionSize, which can be
+		calculated as in the following (in bytes) and shall be a multiple of
+		logical block size:
+		HPB Sub-Region size = 512B x 2^bHPBSubRegionSize
+		bHPBSubRegionSize shall not exceed bHPBRegionSize.
+
+		The file is read only.
+
+What:		/sys/bus/platform/drivers/ufshcd/*/geometry_descriptor/hpb_max_active_regions
+Date:		June 2021
+Contact:	Daejun Park <daejun7.park@samsung.com>
+Description:	This entry shows the maximum number of active HPB regions that
+		is supported by the device.
+
+		The file is read only.
+
+What:		/sys/class/scsi_device/*/device/unit_descriptor/hpb_lu_max_active_regions
+Date:		June 2021
+Contact:	Daejun Park <daejun7.park@samsung.com>
+Description:	This entry shows the maximum number of HPB regions assigned to
+		the HPB logical unit.
+
+		The file is read only.
+
+What:		/sys/class/scsi_device/*/device/unit_descriptor/hpb_pinned_region_start_offset
+Date:		June 2021
+Contact:	Daejun Park <daejun7.park@samsung.com>
+Description:	This entry shows the start offset of HPB pinned region.
+
+		The file is read only.
+
+What:		/sys/class/scsi_device/*/device/unit_descriptor/hpb_number_pinned_regions
+Date:		June 2021
+Contact:	Daejun Park <daejun7.park@samsung.com>
+Description:	This entry shows the number of HPB pinned regions assigned to
+		the HPB logical unit.
+
+		The file is read only.
+
+What:		/sys/class/scsi_device/*/device/hpb_stats/hit_cnt
+Date:		June 2021
+Contact:	Daejun Park <daejun7.park@samsung.com>
+Description:	This entry shows the number of reads that changed to HPB read.
+
+		The file is read only.
+
+What:		/sys/class/scsi_device/*/device/hpb_stats/miss_cnt
+Date:		June 2021
+Contact:	Daejun Park <daejun7.park@samsung.com>
+Description:	This entry shows the number of reads that cannot be changed to
+		HPB read.
+
+		The file is read only.
+
+What:		/sys/class/scsi_device/*/device/hpb_stats/rb_noti_cnt
+Date:		June 2021
+Contact:	Daejun Park <daejun7.park@samsung.com>
+Description:	This entry shows the number of response UPIUs that has
+		recommendations for activating sub-regions and/or inactivating region.
+
+		The file is read only.
+
+What:		/sys/class/scsi_device/*/device/hpb_stats/rb_active_cnt
+Date:		June 2021
+Contact:	Daejun Park <daejun7.park@samsung.com>
+Description:	This entry shows the number of active sub-regions recommended by
+		response UPIUs.
+
+		The file is read only.
+
+What:		/sys/class/scsi_device/*/device/hpb_stats/rb_inactive_cnt
+Date:		June 2021
+Contact:	Daejun Park <daejun7.park@samsung.com>
+Description:	This entry shows the number of inactive regions recommended by
+		response UPIUs.
+
+		The file is read only.
+
+What:		/sys/class/scsi_device/*/device/hpb_stats/map_req_cnt
+Date:		June 2021
+Contact:	Daejun Park <daejun7.park@samsung.com>
+Description:	This entry shows the number of read buffer commands for
+		activating sub-regions recommended by response UPIUs.
+
+		The file is read only.
+
+What:		/sys/class/scsi_device/*/device/hpb_params/requeue_timeout_ms
+Date:		June 2021
+Contact:	Daejun Park <daejun7.park@samsung.com>
+Description:	This entry shows the requeue timeout threshold for write buffer
+		command in ms. The value can be changed by writing an integer to
+		this entry.
+
+What:		/sys/bus/platform/drivers/ufshcd/*/attributes/max_data_size_hpb_single_cmd
+Date:		June 2021
+Contact:	Daejun Park <daejun7.park@samsung.com>
+Description:	This entry shows the maximum HPB data size for using a single HPB
+		command.
+
+		===  ========
+		00h  4KB
+		01h  8KB
+		02h  12KB
+		...
+		FFh  1024KB
+		===  ========
+
+		The file is read only.
+
+What:		/sys/bus/platform/drivers/ufshcd/*/flags/hpb_enable
+Date:		June 2021
+Contact:	Daejun Park <daejun7.park@samsung.com>
+Description:	This entry shows the status of HPB.
+
+		== ============================
+		0  HPB is not enabled.
+		1  HPB is enabled
+		== ============================
+
+		The file is read only.
+
+What:		/sys/class/scsi_device/*/device/hpb_param_sysfs/activation_thld
+Date:		February 2021
+Contact:	Avri Altman <avri.altman@wdc.com>
+Description:	In host control mode, reads are the major source of activation
+		trials.  Once this threshold hs met, the region is added to the
+		"to-be-activated" list.  Since we reset the read counter upon
+		write, this include sending a rb command updating the region
+		ppn as well.
+
+What:		/sys/class/scsi_device/*/device/hpb_param_sysfs/normalization_factor
+Date:		February 2021
+Contact:	Avri Altman <avri.altman@wdc.com>
+Description:	In host control mode, we think of the regions as "buckets".
+		Those buckets are being filled with reads, and emptied on write.
+		We use entries_per_srgn - the amount of blocks in a subregion as
+		our bucket size.  This applies because HPB1.0 only handles
+		single-block reads.  Once the bucket size is crossed, we trigger
+		a normalization work - not only to avoid overflow, but mainly
+		because we want to keep those counters normalized, as we are
+		using those reads as a comparative score, to make various decisions.
+		The normalization is dividing (shift right) the read counter by
+		the normalization_factor. If during consecutive normalizations
+		an active region has exhausted its reads - inactivate it.
+
+What:		/sys/class/scsi_device/*/device/hpb_param_sysfs/eviction_thld_enter
+Date:		February 2021
+Contact:	Avri Altman <avri.altman@wdc.com>
+Description:	Region deactivation is often due to the fact that eviction took
+		place: A region becomes active at the expense of another. This is
+		happening when the max-active-regions limit has been crossed.
+		In host mode, eviction is considered an extreme measure. We
+		want to verify that the entering region has enough reads, and
+		the exiting region has much fewer reads.  eviction_thld_enter is
+		the min reads that a region must have in order to be considered
+		a candidate for evicting another region.
+
+What:		/sys/class/scsi_device/*/device/hpb_param_sysfs/eviction_thld_exit
+Date:		February 2021
+Contact:	Avri Altman <avri.altman@wdc.com>
+Description:	Same as above for the exiting region. A region is considered to
+		be a candidate for eviction only if it has fewer reads than
+		eviction_thld_exit.
+
+What:		/sys/class/scsi_device/*/device/hpb_param_sysfs/read_timeout_ms
+Date:		February 2021
+Contact:	Avri Altman <avri.altman@wdc.com>
+Description:	In order not to hang on to "cold" regions, we inactivate
+		a region that has no READ access for a predefined amount of
+		time - read_timeout_ms. If read_timeout_ms has expired, and the
+		region is dirty, it is less likely that we can make any use of
+		HPB reading it so we inactivate it.  Still, deactivation has
+		its overhead, and we may still benefit from HPB reading this
+		region if it is clean - see read_timeout_expiries.
+
+What:		/sys/class/scsi_device/*/device/hpb_param_sysfs/read_timeout_expiries
+Date:		February 2021
+Contact:	Avri Altman <avri.altman@wdc.com>
+Description:	If the region read timeout has expired, but the region is clean,
+		just re-wind its timer for another spin.  Do that as long as it
+		is clean and did not exhaust its read_timeout_expiries threshold.
+
+What:		/sys/class/scsi_device/*/device/hpb_param_sysfs/timeout_polling_interval_ms
+Date:		February 2021
+Contact:	Avri Altman <avri.altman@wdc.com>
+Description:	The frequency with which the delayed worker that checks the
+		read_timeouts is awakened.
+
+What:		/sys/class/scsi_device/*/device/hpb_param_sysfs/inflight_map_req
+Date:		February 2021
+Contact:	Avri Altman <avri.altman@wdc.com>
+Description:	In host control mode the host is the originator of map requests.
+		To avoid flooding the device with map requests, use a simple throttling
+		mechanism that limits the number of inflight map requests.

Documentation/ABI/testing/sysfs-fs-f2fs

@@ -41,8 +41,7 @@ Description:	This parameter controls the number of prefree segments to be
 What:		/sys/fs/f2fs/<disk>/main_blkaddr
 Date:		November 2019
 Contact:	"Ramon Pantin" <pantin@google.com>
-Description:
-		 Shows first block address of MAIN area.
+Description:	Shows first block address of MAIN area.
 
 What:		/sys/fs/f2fs/<disk>/ipu_policy
 Date:		November 2013
@@ -493,3 +492,23 @@ Contact:	"Chao Yu" <yuchao0@huawei.com>
 Description:	When ATGC is on, it controls age threshold to bypass GCing young
 		candidates whose age is not beyond the threshold, by default it was
 		initialized as 604800 seconds (equals to 7 days).
+
+What:		/sys/fs/f2fs/<disk>/gc_reclaimed_segments
+Date:		July 2021
+Contact:	"Daeho Jeong" <daehojeong@google.com>
+Description:	Show how many segments have been reclaimed by GC during a specific
+		GC mode (0: GC normal, 1: GC idle CB, 2: GC idle greedy,
+		3: GC idle AT, 4: GC urgent high, 5: GC urgent low)
+		You can re-initialize this value to "0".
+
+What:		/sys/fs/f2fs/<disk>/gc_segment_mode
+Date:		July 2021
+Contact:	"Daeho Jeong" <daehojeong@google.com>
+Description:	You can control for which gc mode the "gc_reclaimed_segments" node shows.
+		Refer to the description of the modes in "gc_reclaimed_segments".
+
+What:		/sys/fs/f2fs/<disk>/seq_file_ra_mul
+Date:		July 2021
+Contact:	"Daeho Jeong" <daehojeong@google.com>
+Description:	You can	control the multiplier value of	bdi device readahead window size
+		between 2 (default) and 256 for POSIX_FADV_SEQUENTIAL advise option.

Documentation/ABI/testing/sysfs-kernel-iommu_groups

@@ -42,8 +42,12 @@ Description:	/sys/kernel/iommu_groups/<grp_id>/type shows the type of default
 		========  ======================================================
 		DMA       All the DMA transactions from the device in this group
 		          are translated by the iommu.
+		DMA-FQ    As above, but using batched invalidation to lazily
+		          remove translations after use. This may offer reduced
+			  overhead at the cost of reduced memory protection.
 		identity  All the DMA transactions from the device in this group
-		          are not translated by the iommu.
+		          are not translated by the iommu. Maximum performance
+			  but zero protection.
 		auto      Change to the type the device was booted with.
 		========  ======================================================
 

Documentation/ABI/testing/sysfs-kernel-mm-numa

@@ -0,0 +1,24 @@
+What:		/sys/kernel/mm/numa/
+Date:		June 2021
+Contact:	Linux memory management mailing list <linux-mm@kvack.org>
+Description:	Interface for NUMA
+
+What:		/sys/kernel/mm/numa/demotion_enabled
+Date:		June 2021
+Contact:	Linux memory management mailing list <linux-mm@kvack.org>
+Description:	Enable/disable demoting pages during reclaim
+
+		Page migration during reclaim is intended for systems
+		with tiered memory configurations.  These systems have
+		multiple types of memory with varied performance
+		characteristics instead of plain NUMA systems where
+		the same kind of memory is found at varied distances.
+		Allowing page migration during reclaim enables these
+		systems to migrate pages from fast tiers to slow tiers
+		when the fast tier is under pressure.  This migration
+		is performed before swap.  It may move data to a NUMA
+		node that does not fall into the cpuset of the
+		allocating process which might be construed to violate
+		the guarantees of cpusets.  This should not be enabled
+		on systems which need strict cpuset location
+		guarantees.