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Author SHA1 Message Date
Linus Torvalds
7af81cd0c4 - Improve scalability of DM's device hash by switching to rbtree 
- Extend DM ioctl's DM_LIST_DEVICES_CMD handling to include UUID and
   allow filtering based on name or UUID prefix.
 
 - Various small fixes for typos, warnings, unused function, or
   needlessly exported interfaces.
 
 - Remove needless request_queue NULL pointer checks in DM thin and
   cache targets.
 
 - Remove unnecessary loop in DM core's __split_and_process_bio().
 
 - Remove DM core's dm_vcalloc() and just use kvcalloc or
   kvmalloc_array instead (depending whether zeroing is useful).
 
 - Fix request-based DM's double free of blk_mq_tag_set in device
   remove after table load fails.
 
 - Improve DM persistent data performance on non-x86 by fixing packed
   structs to have a stated alignment. Also remove needless extra work
   from redundant calls to sm_disk_get_nr_free() and a paranoid BUG_ON()
   that caused duplicate checksum calculation.
 
 - Fix missing goto in DM integrity's bitmap_flush_interval error
   handling.
 
 - Add "reset_recalculate" feature flag to DM integrity.
 
 - Improve DM integrity by leveraging discard support to avoid needless
   re-writing of metadata and also use discard support to improve
   hash recalculation.
 
 - Fix race with DM raid target's reshape and MD raid4/5/6 resync that
   resulted in inconsistant reshape state during table reloads.
 
 - Update DM raid target to temove unnecessary discard limits for raid0
   and raid10 now that MD has optimized discard handling for both raid
   levels.
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Merge tag 'for-5.13/dm-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/device-mapper/linux-dm

Pull device mapper updates from Mike Snitzer:

 - Improve scalability of DM's device hash by switching to rbtree

 - Extend DM ioctl's DM_LIST_DEVICES_CMD handling to include UUID and
   allow filtering based on name or UUID prefix.

 - Various small fixes for typos, warnings, unused function, or
   needlessly exported interfaces.

 - Remove needless request_queue NULL pointer checks in DM thin and
   cache targets.

 - Remove unnecessary loop in DM core's __split_and_process_bio().

 - Remove DM core's dm_vcalloc() and just use kvcalloc or kvmalloc_array
   instead (depending whether zeroing is useful).

 - Fix request-based DM's double free of blk_mq_tag_set in device remove
   after table load fails.

 - Improve DM persistent data performance on non-x86 by fixing packed
   structs to have a stated alignment. Also remove needless extra work
   from redundant calls to sm_disk_get_nr_free() and a paranoid BUG_ON()
   that caused duplicate checksum calculation.

 - Fix missing goto in DM integrity's bitmap_flush_interval error
   handling.

 - Add "reset_recalculate" feature flag to DM integrity.

 - Improve DM integrity by leveraging discard support to avoid needless
   re-writing of metadata and also use discard support to improve hash
   recalculation.

 - Fix race with DM raid target's reshape and MD raid4/5/6 resync that
   resulted in inconsistant reshape state during table reloads.

 - Update DM raid target to temove unnecessary discard limits for raid0
   and raid10 now that MD has optimized discard handling for both raid
   levels.

* tag 'for-5.13/dm-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/device-mapper/linux-dm: (26 commits)
  dm raid: remove unnecessary discard limits for raid0 and raid10
  dm rq: fix double free of blk_mq_tag_set in dev remove after table load fails
  dm integrity: use discard support when recalculating
  dm integrity: increase RECALC_SECTORS to improve recalculate speed
  dm integrity: don't re-write metadata if discarding same blocks
  dm raid: fix inconclusive reshape layout on fast raid4/5/6 table reload sequences
  dm raid: fix fall-through warning in rs_check_takeover() for Clang
  dm clone metadata: remove unused function
  dm integrity: fix missing goto in bitmap_flush_interval error handling
  dm: replace dm_vcalloc()
  dm space map common: fix division bug in sm_ll_find_free_block()
  dm persistent data: packed struct should have an aligned() attribute too
  dm btree spine: remove paranoid node_check call in node_prep_for_write()
  dm space map disk: remove redundant calls to sm_disk_get_nr_free()
  dm integrity: add the "reset_recalculate" feature flag
  dm persistent data: remove unused return from exit_shadow_spine()
  dm cache: remove needless request_queue NULL pointer checks
  dm thin: remove needless request_queue NULL pointer check
  dm: unexport dm_{get,put}_table_device
  dm ebs: fix a few typos
  ...
 2021-05-01 11:34:03 -07:00
Linus Torvalds
152d32aa84 ARM: 
- Stage-2 isolation for the host kernel when running in protected mode
 
 - Guest SVE support when running in nVHE mode
 
 - Force W^X hypervisor mappings in nVHE mode
 
 - ITS save/restore for guests using direct injection with GICv4.1
 
 - nVHE panics now produce readable backtraces
 
 - Guest support for PTP using the ptp_kvm driver
 
 - Performance improvements in the S2 fault handler
 
 x86:
 
 - Optimizations and cleanup of nested SVM code
 
 - AMD: Support for virtual SPEC_CTRL
 
 - Optimizations of the new MMU code: fast invalidation,
   zap under read lock, enable/disably dirty page logging under
   read lock
 
 - /dev/kvm API for AMD SEV live migration (guest API coming soon)
 
 - support SEV virtual machines sharing the same encryption context
 
 - support SGX in virtual machines
 
 - add a few more statistics
 
 - improved directed yield heuristics
 
 - Lots and lots of cleanups
 
 Generic:
 
 - Rework of MMU notifier interface, simplifying and optimizing
 the architecture-specific code
 
 - Some selftests improvements
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Merge tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm

Pull kvm updates from Paolo Bonzini:
 "This is a large update by KVM standards, including AMD PSP (Platform
  Security Processor, aka "AMD Secure Technology") and ARM CoreSight
  (debug and trace) changes.

  ARM:

   - CoreSight: Add support for ETE and TRBE

   - Stage-2 isolation for the host kernel when running in protected
     mode

   - Guest SVE support when running in nVHE mode

   - Force W^X hypervisor mappings in nVHE mode

   - ITS save/restore for guests using direct injection with GICv4.1

   - nVHE panics now produce readable backtraces

   - Guest support for PTP using the ptp_kvm driver

   - Performance improvements in the S2 fault handler

  x86:

   - AMD PSP driver changes

   - Optimizations and cleanup of nested SVM code

   - AMD: Support for virtual SPEC_CTRL

   - Optimizations of the new MMU code: fast invalidation, zap under
     read lock, enable/disably dirty page logging under read lock

   - /dev/kvm API for AMD SEV live migration (guest API coming soon)

   - support SEV virtual machines sharing the same encryption context

   - support SGX in virtual machines

   - add a few more statistics

   - improved directed yield heuristics

   - Lots and lots of cleanups

  Generic:

   - Rework of MMU notifier interface, simplifying and optimizing the
     architecture-specific code

   - a handful of "Get rid of oprofile leftovers" patches

   - Some selftests improvements"

* tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm: (379 commits)
  KVM: selftests: Speed up set_memory_region_test
  selftests: kvm: Fix the check of return value
  KVM: x86: Take advantage of kvm_arch_dy_has_pending_interrupt()
  KVM: SVM: Skip SEV cache flush if no ASIDs have been used
  KVM: SVM: Remove an unnecessary prototype declaration of sev_flush_asids()
  KVM: SVM: Drop redundant svm_sev_enabled() helper
  KVM: SVM: Move SEV VMCB tracking allocation to sev.c
  KVM: SVM: Explicitly check max SEV ASID during sev_hardware_setup()
  KVM: SVM: Unconditionally invoke sev_hardware_teardown()
  KVM: SVM: Enable SEV/SEV-ES functionality by default (when supported)
  KVM: SVM: Condition sev_enabled and sev_es_enabled on CONFIG_KVM_AMD_SEV=y
  KVM: SVM: Append "_enabled" to module-scoped SEV/SEV-ES control variables
  KVM: SEV: Mask CPUID[0x8000001F].eax according to supported features
  KVM: SVM: Move SEV module params/variables to sev.c
  KVM: SVM: Disable SEV/SEV-ES if NPT is disabled
  KVM: SVM: Free sev_asid_bitmap during init if SEV setup fails
  KVM: SVM: Zero out the VMCB array used to track SEV ASID association
  x86/sev: Drop redundant and potentially misleading 'sev_enabled'
  KVM: x86: Move reverse CPUID helpers to separate header file
  KVM: x86: Rename GPR accessors to make mode-aware variants the defaults
  ...
 2021-05-01 10:14:08 -07:00
Linus Torvalds
4f9701057a IOMMU Updates for Linux v5.13 
Including:
 
 	- Big cleanup of almost unsused parts of the IOMMU API by
 	  Christoph Hellwig. This mostly affects the Freescale PAMU
 	  driver.
 
 	- New IOMMU driver for Unisoc SOCs
 
 	- ARM SMMU Updates from Will:
 
 	  - SMMUv3: Drop vestigial PREFETCH_ADDR support
 	  - SMMUv3: Elide TLB sync logic for empty gather
 	  - SMMUv3: Fix "Service Failure Mode" handling
     	  - SMMUv2: New Qualcomm compatible string
 
 	- Removal of the AMD IOMMU performance counter writeable check
 	  on AMD. It caused long boot delays on some machines and is
 	  only needed to work around an errata on some older (possibly
 	  pre-production) chips. If someone is still hit by this
 	  hardware issue anyway the performance counters will just
 	  return 0.
 
 	- Support for targeted invalidations in the AMD IOMMU driver.
 	  Before that the driver only invalidated a single 4k page or the
 	  whole IO/TLB for an address space. This has been extended now
 	  and is mostly useful for emulated AMD IOMMUs.
 
 	- Several fixes for the Shared Virtual Memory support in the
 	  Intel VT-d driver
 
 	- Mediatek drivers can now be built as modules
 
 	- Re-introduction of the forcedac boot option which got lost
 	  when converting the Intel VT-d driver to the common dma-iommu
 	  implementation.
 
 	- Extension of the IOMMU device registration interface and
 	  support iommu_ops to be const again when drivers are built as
 	  modules.
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Merge tag 'iommu-updates-v5.13' of git://git.kernel.org/pub/scm/linux/kernel/git/joro/iommu

Pull iommu updates from Joerg Roedel:

 - Big cleanup of almost unsused parts of the IOMMU API by Christoph
   Hellwig. This mostly affects the Freescale PAMU driver.

 - New IOMMU driver for Unisoc SOCs

 - ARM SMMU Updates from Will:
     - Drop vestigial PREFETCH_ADDR support (SMMUv3)
     - Elide TLB sync logic for empty gather (SMMUv3)
     - Fix "Service Failure Mode" handling (SMMUv3)
     - New Qualcomm compatible string (SMMUv2)

 - Removal of the AMD IOMMU performance counter writeable check on AMD.
   It caused long boot delays on some machines and is only needed to
   work around an errata on some older (possibly pre-production) chips.
   If someone is still hit by this hardware issue anyway the performance
   counters will just return 0.

 - Support for targeted invalidations in the AMD IOMMU driver. Before
   that the driver only invalidated a single 4k page or the whole IO/TLB
   for an address space. This has been extended now and is mostly useful
   for emulated AMD IOMMUs.

 - Several fixes for the Shared Virtual Memory support in the Intel VT-d
   driver

 - Mediatek drivers can now be built as modules

 - Re-introduction of the forcedac boot option which got lost when
   converting the Intel VT-d driver to the common dma-iommu
   implementation.

 - Extension of the IOMMU device registration interface and support
   iommu_ops to be const again when drivers are built as modules.

* tag 'iommu-updates-v5.13' of git://git.kernel.org/pub/scm/linux/kernel/git/joro/iommu: (84 commits)
  iommu: Streamline registration interface
  iommu: Statically set module owner
  iommu/mediatek-v1: Add error handle for mtk_iommu_probe
  iommu/mediatek-v1: Avoid build fail when build as module
  iommu/mediatek: Always enable the clk on resume
  iommu/fsl-pamu: Fix uninitialized variable warning
  iommu/vt-d: Force to flush iotlb before creating superpage
  iommu/amd: Put newline after closing bracket in warning
  iommu/vt-d: Fix an error handling path in 'intel_prepare_irq_remapping()'
  iommu/vt-d: Fix build error of pasid_enable_wpe() with !X86
  iommu/amd: Remove performance counter pre-initialization test
  Revert "iommu/amd: Fix performance counter initialization"
  iommu/amd: Remove duplicate check of devid
  iommu/exynos: Remove unneeded local variable initialization
  iommu/amd: Page-specific invalidations for more than one page
  iommu/arm-smmu-v3: Remove the unused fields for PREFETCH_CONFIG command
  iommu/vt-d: Avoid unnecessary cache flush in pasid entry teardown
  iommu/vt-d: Invalidate PASID cache when root/context entry changed
  iommu/vt-d: Remove WO permissions on second-level paging entries
  iommu/vt-d: Report the right page fault address
  ...
 2021-05-01 09:33:00 -07:00
Linus Torvalds
f34b2cf178 RDMA merge window pull request 
This is significantly bug fixes and general cleanups. The noteworthy new
 features are fairly small:
 
 - XRC support for HNS and improves RQ operations
 
 - Bug fixes and updates for hns, mlx5, bnxt_re, hfi1, i40iw, rxe, siw and
   qib
 
 - Quite a few general cleanups on spelling, error handling, static checker
   detections, etc
 
 - Increase the number of device ports supported beyond 255. High port
   count software switches now exist
 
 - Several bug fixes for rtrs
 
 - mlx5 Device Memory support for host controlled atomics
 
 - Report SRQ tables through to rdma-tool
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Merge tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rdma/rdma

Pull rdma updates from Jason Gunthorpe:
 "This is significantly bug fixes and general cleanups. The noteworthy
  new features are fairly small:

   - XRC support for HNS and improves RQ operations

   - Bug fixes and updates for hns, mlx5, bnxt_re, hfi1, i40iw, rxe, siw
     and qib

   - Quite a few general cleanups on spelling, error handling, static
     checker detections, etc

   - Increase the number of device ports supported beyond 255. High port
     count software switches now exist

   - Several bug fixes for rtrs

   - mlx5 Device Memory support for host controlled atomics

   - Report SRQ tables through to rdma-tool"

* tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rdma/rdma: (145 commits)
  IB/qib: Remove redundant assignment to ret
  RDMA/nldev: Add copy-on-fork attribute to get sys command
  RDMA/bnxt_re: Fix a double free in bnxt_qplib_alloc_res
  RDMA/siw: Fix a use after free in siw_alloc_mr
  IB/hfi1: Remove redundant variable rcd
  RDMA/nldev: Add QP numbers to SRQ information
  RDMA/nldev: Return SRQ information
  RDMA/restrack: Add support to get resource tracking for SRQ
  RDMA/nldev: Return context information
  RDMA/core: Add CM to restrack after successful attachment to a device
  RDMA/cma: Skip device which doesn't support CM
  RDMA/rxe: Fix a bug in rxe_fill_ip_info()
  RDMA/mlx5: Expose private query port
  RDMA/mlx4: Remove an unused variable
  RDMA/mlx5: Fix type assignment for ICM DM
  IB/mlx5: Set right RoCE l3 type and roce version while deleting GID
  RDMA/i40iw: Fix error unwinding when i40iw_hmc_sd_one fails
  RDMA/cxgb4: add missing qpid increment
  IB/ipoib: Remove unnecessary struct declaration
  RDMA/bnxt_re: Get rid of custom module reference counting
  ...
 2021-05-01 09:15:05 -07:00
Linus Torvalds
9f67672a81 New features for ext4 this cycle include support for encrypted 
casefold, ensure that deleted file names are cleared in directory
 blocks by zeroing directory entries when they are unlinked or moved as
 part of a hash tree node split.  We also improve the block allocator's
 performance on a freshly mounted file system by prefetching block
 bitmaps.
 
 There are also the usual cleanups and bug fixes, including fixing a
 page cache invalidation race when there is mixed buffered and direct
 I/O and the block size is less than page size, and allow the dax flag
 to be set and cleared on inline directories.
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Merge tag 'ext4_for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4

Pull ext4 updates from Ted Ts'o:
 "New features for ext4 this cycle include support for encrypted
  casefold, ensure that deleted file names are cleared in directory
  blocks by zeroing directory entries when they are unlinked or moved as
  part of a hash tree node split. We also improve the block allocator's
  performance on a freshly mounted file system by prefetching block
  bitmaps.

  There are also the usual cleanups and bug fixes, including fixing a
  page cache invalidation race when there is mixed buffered and direct
  I/O and the block size is less than page size, and allow the dax flag
  to be set and cleared on inline directories"

* tag 'ext4_for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4: (32 commits)
  ext4: wipe ext4_dir_entry2 upon file deletion
  ext4: Fix occasional generic/418 failure
  fs: fix reporting supported extra file attributes for statx()
  ext4: allow the dax flag to be set and cleared on inline directories
  ext4: fix debug format string warning
  ext4: fix trailing whitespace
  ext4: fix various seppling typos
  ext4: fix error return code in ext4_fc_perform_commit()
  ext4: annotate data race in jbd2_journal_dirty_metadata()
  ext4: annotate data race in start_this_handle()
  ext4: fix ext4_error_err save negative errno into superblock
  ext4: fix error code in ext4_commit_super
  ext4: always panic when errors=panic is specified
  ext4: delete redundant uptodate check for buffer
  ext4: do not set SB_ACTIVE in ext4_orphan_cleanup()
  ext4: make prefetch_block_bitmaps default
  ext4: add proc files to monitor new structures
  ext4: improve cr 0 / cr 1 group scanning
  ext4: add MB_NUM_ORDERS macro
  ext4: add mballoc stats proc file
  ...
 2021-04-30 15:35:30 -07:00
Linus Torvalds
6bab076a3d dlm for 5.13 
This set includes more dlm networking cleanups and improvements for
 making dlm shutdowns more robust.
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Merge tag 'dlm-5.13' of git://git.kernel.org/pub/scm/linux/kernel/git/teigland/linux-dlm

Pull dlm updates from David Teigland:
 "This includes more dlm networking cleanups and improvements for making
  dlm shutdowns more robust"

* tag 'dlm-5.13' of git://git.kernel.org/pub/scm/linux/kernel/git/teigland/linux-dlm:
  fs: dlm: fix missing unlock on error in accept_from_sock()
  fs: dlm: add shutdown hook
  fs: dlm: flush swork on shutdown
  fs: dlm: remove unaligned memory access handling
  fs: dlm: check on minimum msglen size
  fs: dlm: simplify writequeue handling
  fs: dlm: use GFP_ZERO for page buffer
  fs: dlm: change allocation limits
  fs: dlm: add check if dlm is currently running
  fs: dlm: add errno handling to check callback
  fs: dlm: set subclass for othercon sock_mutex
  fs: dlm: set connected bit after accept
  fs: dlm: fix mark setting deadlock
  fs: dlm: fix debugfs dump
 2021-04-30 15:28:25 -07:00
Linus Torvalds
9ec1efbf9d fuse update for 5.13 
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Merge tag 'fuse-update-5.13' of git://git.kernel.org/pub/scm/linux/kernel/git/mszeredi/fuse

Pull fuse updates from Miklos Szeredi:

 - Fix a page locking bug in write (introduced in 2.6.26)

 - Allow sgid bit to be killed in setacl()

 - Miscellaneous fixes and cleanups

* tag 'fuse-update-5.13' of git://git.kernel.org/pub/scm/linux/kernel/git/mszeredi/fuse:
  cuse: simplify refcount
  cuse: prevent clone
  virtiofs: fix userns
  virtiofs: remove useless function
  virtiofs: split requests that exceed virtqueue size
  virtiofs: fix memory leak in virtio_fs_probe()
  fuse: invalidate attrs when page writeback completes
  fuse: add a flag FUSE_SETXATTR_ACL_KILL_SGID to kill SGID
  fuse: extend FUSE_SETXATTR request
  fuse: fix matching of FUSE_DEV_IOC_CLONE command
  fuse: fix a typo
  fuse: don't zero pages twice
  fuse: fix typo for fuse_conn.max_pages comment
  fuse: fix write deadlock
 2021-04-30 15:23:16 -07:00
Linus Torvalds
d652502ef4 overlayfs update for 5.13 
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Merge tag 'ovl-update-5.13' of git://git.kernel.org/pub/scm/linux/kernel/git/mszeredi/vfs

Pull overlayfs update from Miklos Szeredi:

 - Fix a regression introduced in 5.2 that resulted in valid overlayfs
   mounts being rejected with ELOOP (Too many levels of symbolic links)

 - Fix bugs found by various tools

 - Miscellaneous improvements and cleanups

* tag 'ovl-update-5.13' of git://git.kernel.org/pub/scm/linux/kernel/git/mszeredi/vfs:
  ovl: add debug print to ovl_do_getxattr()
  ovl: invalidate readdir cache on changes to dir with origin
  ovl: allow upperdir inside lowerdir
  ovl: show "userxattr" in the mount data
  ovl: trivial typo fixes in the file inode.c
  ovl: fix misspellings using codespell tool
  ovl: do not copy attr several times
  ovl: remove ovl_map_dev_ino() return value
  ovl: fix error for ovl_fill_super()
  ovl: fix missing revert_creds() on error path
  ovl: fix leaked dentry
  ovl: restrict lower null uuid for "xino=auto"
  ovl: check that upperdir path is not on a read-only mount
  ovl: plumb through flush method
 2021-04-30 15:17:08 -07:00
Linus Torvalds
d42f323a7d Merge branch 'akpm' (patches from Andrew) 
Merge misc updates from Andrew Morton:
 "A few misc subsystems and some of MM.

  175 patches.

  Subsystems affected by this patch series: ia64, kbuild, scripts, sh,
  ocfs2, kfifo, vfs, kernel/watchdog, and mm (slab-generic, slub,
  kmemleak, debug, pagecache, msync, gup, memremap, memcg, pagemap,
  mremap, dma, sparsemem, vmalloc, documentation, kasan, initialization,
  pagealloc, and memory-failure)"

* emailed patches from Andrew Morton <akpm@linux-foundation.org>: (175 commits)
  mm/memory-failure: unnecessary amount of unmapping
  mm/mmzone.h: fix existing kernel-doc comments and link them to core-api
  mm: page_alloc: ignore init_on_free=1 for debug_pagealloc=1
  net: page_pool: use alloc_pages_bulk in refill code path
  net: page_pool: refactor dma_map into own function page_pool_dma_map
  SUNRPC: refresh rq_pages using a bulk page allocator
  SUNRPC: set rq_page_end differently
  mm/page_alloc: inline __rmqueue_pcplist
  mm/page_alloc: optimize code layout for __alloc_pages_bulk
  mm/page_alloc: add an array-based interface to the bulk page allocator
  mm/page_alloc: add a bulk page allocator
  mm/page_alloc: rename alloced to allocated
  mm/page_alloc: duplicate include linux/vmalloc.h
  mm, page_alloc: avoid page_to_pfn() in move_freepages()
  mm/Kconfig: remove default DISCONTIGMEM_MANUAL
  mm: page_alloc: dump migrate-failed pages
  mm/mempolicy: fix mpol_misplaced kernel-doc
  mm/mempolicy: rewrite alloc_pages_vma documentation
  mm/mempolicy: rewrite alloc_pages documentation
  mm/mempolicy: rename alloc_pages_current to alloc_pages
  ...
 2021-04-30 14:38:01 -07:00
Linus Torvalds
65ec0a7d24 This is the bulk of the pin control changes for the v5.13 kernel cycle 
Core changes:
 
 - A semantic change to handle pinmux and pinconf in explicit order
   while up until now we depended on the semantic order in the
   device tree. The device tree is a functional programming
   language and does not imply any order, so the right thing is
   for the pin control core to provide these semantics.
 
 - Add a new pinmux-select debugfs file which makes it possible to
   go in and select functions for a pin manually (iteratively, at
   the prompt) for debugging purposes.
 
 - Fixes to gpio regmap handling for a new pin control driver
   making use of regmap-gpio.
 
 - Use octal permissions on debugfs files.
 
 New drivers:
 
 - A massive rewrite of the former custom pin control driver for
   MIPS Broadcom devices to instead use the pin control subsystem.
   New pin control drivers for BCM6345, BCM6328, BCM6358, BCM6362,
   BCM6368, BCM63268 and BCM6318 SoC variants are implemented.
 
 - Support for PM8350, PM8350B, PM8350C, PMK8350, PMR735A and
   PMR735B in the Qualcomm PMIC GPIO driver. Also the two GPIOs
   on PM8008 are supported.
 
 - Support for the Rockchip RK3568/RK3566 pin controller.
 
 - Support for Ingenic JZ4730, JZ4750, JZ4755, JZ4775 and
   X2000.
 
 - Support for Mediatek MTK8195.
 
 - Add a new Xilinx ZynqMP pin control driver.
 
 Driver improvements and non-urgent fixes:
 
 - Modularization and improvements of the Rockchip drivers.
 
 - Some new pins added to the description of new Renesas SoCs.
 
 - Clarifications of the GPIO base calculation in the Intel driver.
 
 - Fix the function names for the MPP54 and MPP55 pins in the Armada
   CP110 pin controller.
 
 - GPIO wakeup interrupt map for Qualcomm SC7280 and SM8350.
 
 - Support for ACPI probing of the Qualcomm SC8180x.
 
 - Fix interrupt clear status on rockchip
 
 - Fix some missing pins on the Ingenic JZ4770, some semantic
   fixes for the behaviour of the Ingenic pin controller.
   Add DMIC pins for JZ4780, X1000, X1500 and X1830.
 
 - A slew of janitorial like of_node_put() calls.
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Merge tag 'pinctrl-v5.13-1' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-pinctrl

Pull pin control updates from Linus Walleij:
 "There is a lot going on!

  Core changes:

   - A semantic change to handle pinmux and pinconf in explicit order
     while up until now we depended on the semantic order in the device
     tree. The device tree is a functional programming language and does
     not imply any order, so the right thing is for the pin control core
     to provide these semantics.

   - Add a new pinmux-select debugfs file which makes it possible to go
     in and select functions for a pin manually (iteratively, at the
     prompt) for debugging purposes.

   - Fixes to gpio regmap handling for a new pin control driver making
     use of regmap-gpio.

   - Use octal permissions on debugfs files.

  New drivers:

   - A massive rewrite of the former custom pin control driver for MIPS
     Broadcom devices to instead use the pin control subsystem. New pin
     control drivers for BCM6345, BCM6328, BCM6358, BCM6362, BCM6368,
     BCM63268 and BCM6318 SoC variants are implemented.

   - Support for PM8350, PM8350B, PM8350C, PMK8350, PMR735A and PMR735B
     in the Qualcomm PMIC GPIO driver. Also the two GPIOs on PM8008 are
     supported.

   - Support for the Rockchip RK3568/RK3566 pin controller.

   - Support for Ingenic JZ4730, JZ4750, JZ4755, JZ4775 and X2000.

   - Support for Mediatek MTK8195.

   - Add a new Xilinx ZynqMP pin control driver.

  Driver improvements and non-urgent fixes:

   - Modularization and improvements of the Rockchip drivers.

   - Some new pins added to the description of new Renesas SoCs.

   - Clarifications of the GPIO base calculation in the Intel driver.

   - Fix the function names for the MPP54 and MPP55 pins in the Armada
     CP110 pin controller.

   - GPIO wakeup interrupt map for Qualcomm SC7280 and SM8350.

   - Support for ACPI probing of the Qualcomm SC8180x.

   - Fix interrupt clear status on rockchip

   - Fix some missing pins on the Ingenic JZ4770, some semantic fixes
     for the behaviour of the Ingenic pin controller. Add DMIC pins for
     JZ4780, X1000, X1500 and X1830.

   - A slew of janitorial like of_node_put() calls"

* tag 'pinctrl-v5.13-1' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-pinctrl: (99 commits)
  pinctrl: Add Xilinx ZynqMP pinctrl driver support
  firmware: xilinx: Add pinctrl support
  pinctrl: rockchip: do coding style for mux route struct
  pinctrl: Add PIN_CONFIG_MODE_PWM to enum pin_config_param
  pinctrl: Introduce MODE group in enum pin_config_param
  pinctrl: Keep enum pin_config_param ordered by name
  dt-bindings: pinctrl: Add binding for ZynqMP pinctrl driver
  pinctrl: core: Fix kernel doc string for pin_get_name()
  pinctrl: mediatek: use spin lock in mtk_rmw
  pinctrl: add drive for I2C related pins on MT8195
  pinctrl: add pinctrl driver on mt8195
  dt-bindings: pinctrl: mt8195: add pinctrl file and binding document
  pinctrl: Ingenic: Add pinctrl driver for X2000.
  pinctrl: Ingenic: Add pinctrl driver for JZ4775.
  pinctrl: Ingenic: Add pinctrl driver for JZ4755.
  pinctrl: Ingenic: Add pinctrl driver for JZ4750.
  pinctrl: Ingenic: Add pinctrl driver for JZ4730.
  dt-bindings: pinctrl: Add bindings for new Ingenic SoCs.
  pinctrl: Ingenic: Reformat the code.
  pinctrl: Ingenic: Add DMIC pins support for Ingenic SoCs.
  ...
 2021-04-30 13:04:30 -07:00
Linus Torvalds
592fa9532d Merge branch 'i2c/for-5.13' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux 
Pull i2c updates from Wolfram Sang:

 - new drivers for Silicon Labs CP2615 and the HiSilicon I2C unit

 - bigger refactoring for the MPC driver

 - support for full software nodes - no need to work around with only
   properties anymore

 - we now have 'devm_i2c_add_adapter', too

 - sub-system wide fixes for the RPM refcounting problem which often
   caused a leak when an error was encountered during probe

 - the rest is usual driver updates and improvements

* 'i2c/for-5.13' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux: (77 commits)
  i2c: mediatek: Use scl_int_delay_ns to compensate clock-stretching
  i2c: mediatek: Fix wrong dma sync flag
  i2c: mediatek: Fix send master code at more than 1MHz
  i2c: sh7760: fix IRQ error path
  i2c: i801: Add support for Intel Alder Lake PCH-M
  i2c: core: Fix spacing error by checkpatch
  i2c: s3c2410: simplify getting of_device_id match data
  i2c: nomadik: Fix space errors
  i2c: iop3xx: Fix coding style issues
  i2c: amd8111: Fix coding style issues
  i2c: mpc: Drop duplicate message from devm_platform_ioremap_resource()
  i2c: mpc: Use device_get_match_data() helper
  i2c: mpc: Remove CONFIG_PM_SLEEP ifdeffery
  i2c: mpc: Use devm_clk_get_optional()
  i2c: mpc: Update license and copyright
  i2c: mpc: Interrupt driven transfer
  i2c: sh7760: add IRQ check
  i2c: rcar: add IRQ check
  i2c: mlxbf: add IRQ check
  i2c: jz4780: add IRQ check
  ...
 2021-04-30 13:01:02 -07:00
Linus Torvalds
efd8929b9e Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/hid/hid 
Pull HID updates from Jiri Kosina:

 - Surface Aggregator Module support from Maximilian Luz

 - Apple Magic Mouse 2 support from John Chen

 - Support for newer Quad/BT 2.0 Logitech receivers in HID proxy mode
   from Hans de Goede

 - Thinkpad X1 Tablet keyboard support from Hans de Goede

 - Support for FTDI FT260 I2C host adapter from Michael Zaidman

 - other various small device-specific quirks, fixes and cleanups

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/hid/hid: (46 commits)
  HID: wacom: Setup pen input capabilities to the targeted tools
  HID: hid-sensor-hub: Move 'hsdev' description to correct struct definition
  HID: hid-sensor-hub: Remove unused struct member 'quirks'
  HID: wacom_sys: Demote kernel-doc abuse
  HID: hid-sensor-custom: Remove unused variable 'ret'
  HID: hid-uclogic-params: Ensure function names are present and correct in kernel-doc headers
  HID: hid-uclogic-rdesc: Kernel-doc is for functions and structs
  HID: hid-logitech-hidpp: Fix conformant kernel-doc header and demote abuses
  HID: hid-picolcd_core: Remove unused variable 'ret'
  HID: hid-kye: Fix incorrect function name for kye_tablet_enable()
  HID: hid-core: Fix incorrect function name in header
  HID: hid-alps: Correct struct misnaming
  HID: usbhid: hid-pidff: Demote a couple kernel-doc abuses
  HID: usbhid: Repair a formatting issue in a struct description
  HID: hid-thrustmaster: Demote a bunch of kernel-doc abuses
  HID: input: map battery capacity (00850065)
  HID: magicmouse: fix reconnection of Magic Mouse 2
  HID: magicmouse: fix 3 button emulation of Mouse 2
  HID: magicmouse: add Apple Magic Mouse 2 support
  HID: lenovo: Add support for Thinkpad X1 Tablet Thin keyboard
  ...
 2021-04-30 12:53:02 -07:00
Linus Torvalds
b71428d7ab sound updates for 5.13 
No surprises in this development cycle, and most of works are about
 the fixes and the improvements of the existing code, while a new LED
 control layer and a few new drivers have been introduced.
 
 Here are some highlights:
 
 Core:
 - A common mute-LED framework was introduced;
   used by HD-audio for now, more adaption will follow later.
   The former "Mic Mute-LED Mode" mixer control has been replaced with
   the corresponding sysfs now.
 - User-control management was changed to count consumed bytes instead
   of capping by number of elements;
   this will allow more controls in the normal usage pattern while
   avoiding the possible memory exhaustion DoS
 
 ASoC:
 - Continued refactoring and cleanups in ASoC core and generic card
   drivers
 - Wide range of small cppcheck and warning fixes
 - New drivers for Freescale i.MX DMA over rpmsg, Mediatek MT6358
    accessory detection, and Realtek RT1019, RT1316, RT711 and RT715
 
 USB-audio:
 - Continued improvements and fixes of the implicit feedback mode,
   including better support for Pioneer and Roland/BOSS devices
 
 HD-audio:
 - Default back to non-buffer preallocation on x86
 - Cirrus codec improvements, more quirks for Realtek codecs
 
 Others:
 - New virtio sound driver
 - FireWire Bebob updates
 
 Note that this PR includes a couple of changes in reset and SPI
 drivers, too, and some merge conflicts might happen.
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Merge tag 'sound-5.13-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound

Pull sound updates from Takashi Iwai:
 "No surprises in this development cycle, and most of work is about the
  fixes and the improvements of the existing code, while a new LED
  control layer and a few new drivers have been introduced.

  Here are some highlights:

  Core:
   - A common mute-LED framework was introduced. It is used by HD-audio
     for now, more adaption will follow later. The former "Mic Mute-LED
     Mode" mixer control has been replaced with the corresponding sysfs
     now.
   - User-control management was changed to count consumed bytes instead
     of capping by number of elements; this will allow more controls in
     the normal usage pattern while avoiding the possible memory
     exhaustion DoS

  ASoC:
   - Continued refactoring and cleanups in ASoC core and generic card
     drivers
   - Wide range of small cppcheck and warning fixes
   - New drivers for Freescale i.MX DMA over rpmsg, Mediatek MT6358
     accessory detection, and Realtek RT1019, RT1316, RT711 and RT715

  USB-audio:
   - Continued improvements and fixes of the implicit feedback mode,
     including better support for Pioneer and Roland/BOSS devices

  HD-audio:
   - Default back to non-buffer preallocation on x86
   - Cirrus codec improvements, more quirks for Realtek codecs

  Others:
   - New virtio sound driver
   - FireWire Bebob updates"

* tag 'sound-5.13-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound: (587 commits)
  ALSA: hda/conexant: Re-order CX5066 quirk table entries
  ALSA: hda/realtek: Remove redundant entry for ALC861 Haier/Uniwill devices
  ALSA: hda/realtek: Re-order ALC662 quirk table entries
  ALSA: hda/realtek: Re-order remaining ALC269 quirk table entries
  ALSA: hda/realtek: Re-order ALC269 Lenovo quirk table entries
  ALSA: hda/realtek: Re-order ALC269 Sony quirk table entries
  ALSA: hda/realtek: Re-order ALC269 ASUS quirk table entries
  ALSA: hda/realtek: Re-order ALC269 Dell quirk table entries
  ALSA: hda/realtek: Re-order ALC269 Acer quirk table entries
  ALSA: hda/realtek: Re-order ALC269 HP quirk table entries
  ALSA: hda/realtek: Re-order ALC882 Clevo quirk table entries
  ALSA: hda/realtek: Re-order ALC882 Sony quirk table entries
  ALSA: hda/realtek: Re-order ALC882 Acer quirk table entries
  ALSA: usb-audio: Remove redundant assignment to len
  ALSA: hda/realtek: Add quirk for Intel Clevo PCx0Dx
  ALSA: virtio: fix kernel-doc
  ALSA: hda/cirrus: Use CS8409 filter to fix abnormal sounds on Bullseye
  ALSA: hda/cirrus: Set Initial DMIC volume for Bullseye to -26 dB
  ALSA: sb: Fix two use after free in snd_sb_qsound_build
  ALSA: emu8000: Fix a use after free in snd_emu8000_create_mixer
  ...
 2021-04-30 12:48:14 -07:00
Linus Torvalds
95275402f6 drm tegra-next + fixes for 5.13-rc1 
tegra:
 - Tegra186 hardware cursor support
 - better capability reporting for different SoC
 - better framebuffer modifier support
 - host1x fixes
 
 ttm:
 - fix unswappable BO handling
 
 efifb:
 - check for PCI before using it
 
 amdgpu:
 - Fixes for Aldebaran
 - Display LTTPR fixes
 - eDP fixes
 - Fixes for Vangogh
 - RAS fixes
 - ASPM support
 - Renoir SMU fixes
 - Modifier fixes
 - Misc code cleanups
 - Freesync fixes
 
 i915:
 - Several fixes to GLK handling in recent display refactoring
 - Rare watchdog timer race fix
 - Cppcheck redundant condition fix
 - Overlay error code propagation fix
 - Documentation fix
 - gvt: Remove one unused function warning
 - gvt: Fix intel_gvt_init_device() return type
 - gvt: Remove one duplicated register accessible check
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Merge tag 'drm-next-2021-04-30' of git://anongit.freedesktop.org/drm/drm

Pull more drm updates from Dave Airlie:
 "Looks like I missed a tegra feature request for next, but should still
  be fine since it's pretty self contained.

  Apart from that got a set of i915 and amdgpu fixes as per usual along
  with a few misc fixes.

  tegra:
   - Tegra186 hardware cursor support
   - better capability reporting for different SoC
   - better framebuffer modifier support
   - host1x fixes

  ttm:
   - fix unswappable BO handling

  efifb:
   - check for PCI before using it

  amdgpu:
   - Fixes for Aldebaran
   - Display LTTPR fixes
   - eDP fixes
   - Fixes for Vangogh
   - RAS fixes
   - ASPM support
   - Renoir SMU fixes
   - Modifier fixes
   - Misc code cleanups
   - Freesync fixes

  i915:
   - Several fixes to GLK handling in recent display refactoring
   - Rare watchdog timer race fix
   - Cppcheck redundant condition fix
   - Overlay error code propagation fix
   - Documentation fix
   - gvt: Remove one unused function warning
   - gvt: Fix intel_gvt_init_device() return type
   - gvt: Remove one duplicated register accessible check"

* tag 'drm-next-2021-04-30' of git://anongit.freedesktop.org/drm/drm: (111 commits)
  efifb: Check efifb_pci_dev before using it
  drm/i915: Fix docbook descriptions for i915_gem_shrinker
  drm/i915: fix an error code in intel_overlay_do_put_image()
  drm/i915/display/psr: Fix cppcheck warnings
  drm/i915: Disable LTTPR detection on GLK once again
  drm/i915: Restore lost glk ccs w/a
  drm/i915: Restore lost glk FBC 16bpp w/a
  drm/i915: Take request reference before arming the watchdog timer
  drm/ttm: fix error handling if no BO can be swapped out v4
  drm/i915/gvt: Remove duplicated register accessible check
  drm/amdgpu/gmc9: remove dummy read workaround for newer chips
  drm/amdgpu: Add mem sync flag for IB allocated by SA
  drm/amdgpu: Fix SDMA RAS error reporting on Aldebaran
  drm/amdgpu: Reset RAS error count and status regs
  Revert "drm/amdgpu: workaround the TMR MC address issue (v2)"
  drm/amd/display: 3.2.132
  drm/amd/display: [FW Promotion] Release 0.0.62
  drm/amd/display: add helper for enabling mst stream features
  drm/amd/display: Report Proper Quantization Range in AVI Infoframe
  drm/amd/display: Fix call to pass bpp in 16ths of a bit
  ...
 2021-04-30 12:44:02 -07:00
Linus Torvalds
65c61de9d0 Summary of modules changes for the 5.13 merge window: 
- Fix an age old bug involving jump_calls and static_labels when
   CONFIG_MODULE_UNLOAD=n. When CONFIG_MODULE_UNLOAD=n, it means you
   can't unload modules, so normally the __exit sections of a module are
   not loaded at all. However, dynamic code patching (jump_label,
   static_call, alternatives) can have sites in __exit sections even if
   __exit is never executed.
 
   Reported by Peter Zijlstra: "Alternatives, jump_labels and static_call
   all can have relocations into __exit code.  Not loading it at all would
   be BAD." Therefore, load the __exit sections even when
   CONFIG_MODULE_UNLOAD=n, and discard them after init.
 
 Signed-off-by: Jessica Yu <jeyu@kernel.org>
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Merge tag 'modules-for-v5.13' of git://git.kernel.org/pub/scm/linux/kernel/git/jeyu/linux

Pull module updates from Jessica Yu:
 "Fix an age old bug involving jump_calls and static_labels when
  CONFIG_MODULE_UNLOAD=n.

  When CONFIG_MODULE_UNLOAD=n, it means you can't unload modules, so
  normally the __exit sections of a module are not loaded at all.
  However, dynamic code patching (jump_label, static_call, alternatives)
  can have sites in __exit sections even if __exit is never executed.

  Reported by Peter Zijlstra:
     'Alternatives, jump_labels and static_call all can have relocations
      into __exit code. Not loading it at all would be BAD.'

  Therefore, load the __exit sections even when CONFIG_MODULE_UNLOAD=n,
  and discard them after init"

* tag 'modules-for-v5.13' of git://git.kernel.org/pub/scm/linux/kernel/git/jeyu/linux:
  module: treat exit sections the same as init sections when !CONFIG_MODULE_UNLOAD
 2021-04-30 12:29:36 -07:00
Linus Torvalds
c70a4be130 powerpc updates for 5.13 
- Enable KFENCE for 32-bit.
 
  - Implement EBPF for 32-bit.
 
  - Convert 32-bit to do interrupt entry/exit in C.
 
  - Convert 64-bit BookE to do interrupt entry/exit in C.
 
  - Changes to our signal handling code to use user_access_begin/end() more extensively.
 
  - Add support for time namespaces (CONFIG_TIME_NS)
 
  - A series of fixes that allow us to reenable STRICT_KERNEL_RWX.
 
  - Other smaller features, fixes & cleanups.
 
 Thanks to: Alexey Kardashevskiy, Andreas Schwab, Andrew Donnellan, Aneesh Kumar K.V,
   Athira Rajeev, Bhaskar Chowdhury, Bixuan Cui, Cédric Le Goater, Chen Huang, Chris
   Packham, Christophe Leroy, Christopher M. Riedl, Colin Ian King, Dan Carpenter, Daniel
   Axtens, Daniel Henrique Barboza, David Gibson, Davidlohr Bueso, Denis Efremov,
   dingsenjie, Dmitry Safonov, Dominic DeMarco, Fabiano Rosas, Ganesh Goudar, Geert
   Uytterhoeven, Geetika Moolchandani, Greg Kurz, Guenter Roeck, Haren Myneni, He Ying,
   Jiapeng Chong, Jordan Niethe, Laurent Dufour, Lee Jones, Leonardo Bras, Li Huafei,
   Madhavan Srinivasan, Mahesh Salgaonkar, Masahiro Yamada, Nathan Chancellor, Nathan
   Lynch, Nicholas Piggin, Oliver O'Halloran, Paul Menzel, Pu Lehui, Randy Dunlap, Ravi
   Bangoria, Rosen Penev, Russell Currey, Santosh Sivaraj, Sebastian Andrzej Siewior,
   Segher Boessenkool, Shivaprasad G Bhat, Srikar Dronamraju, Stephen Rothwell, Thadeu Lima
   de Souza Cascardo, Thomas Gleixner, Tony Ambardar, Tyrel Datwyler, Vaibhav Jain,
   Vincenzo Frascino, Xiongwei Song, Yang Li, Yu Kuai, Zhang Yunkai.
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Merge tag 'powerpc-5.13-1' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux

Pull powerpc updates from Michael Ellerman:

 - Enable KFENCE for 32-bit.

 - Implement EBPF for 32-bit.

 - Convert 32-bit to do interrupt entry/exit in C.

 - Convert 64-bit BookE to do interrupt entry/exit in C.

 - Changes to our signal handling code to use user_access_begin/end()
   more extensively.

 - Add support for time namespaces (CONFIG_TIME_NS)

 - A series of fixes that allow us to reenable STRICT_KERNEL_RWX.

 - Other smaller features, fixes & cleanups.

Thanks to Alexey Kardashevskiy, Andreas Schwab, Andrew Donnellan, Aneesh
Kumar K.V, Athira Rajeev, Bhaskar Chowdhury, Bixuan Cui, Cédric Le
Goater, Chen Huang, Chris Packham, Christophe Leroy, Christopher M.
Riedl, Colin Ian King, Dan Carpenter, Daniel Axtens, Daniel Henrique
Barboza, David Gibson, Davidlohr Bueso, Denis Efremov, dingsenjie,
Dmitry Safonov, Dominic DeMarco, Fabiano Rosas, Ganesh Goudar, Geert
Uytterhoeven, Geetika Moolchandani, Greg Kurz, Guenter Roeck, Haren
Myneni, He Ying, Jiapeng Chong, Jordan Niethe, Laurent Dufour, Lee
Jones, Leonardo Bras, Li Huafei, Madhavan Srinivasan, Mahesh Salgaonkar,
Masahiro Yamada, Nathan Chancellor, Nathan Lynch, Nicholas Piggin,
Oliver O'Halloran, Paul Menzel, Pu Lehui, Randy Dunlap, Ravi Bangoria,
Rosen Penev, Russell Currey, Santosh Sivaraj, Sebastian Andrzej Siewior,
Segher Boessenkool, Shivaprasad G Bhat, Srikar Dronamraju, Stephen
Rothwell, Thadeu Lima de Souza Cascardo, Thomas Gleixner, Tony Ambardar,
Tyrel Datwyler, Vaibhav Jain, Vincenzo Frascino, Xiongwei Song, Yang Li,
Yu Kuai, and Zhang Yunkai.

* tag 'powerpc-5.13-1' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux: (302 commits)
  powerpc/signal32: Fix erroneous SIGSEGV on RT signal return
  powerpc: Avoid clang uninitialized warning in __get_user_size_allowed
  powerpc/papr_scm: Mark nvdimm as unarmed if needed during probe
  powerpc/kvm: Fix build error when PPC_MEM_KEYS/PPC_PSERIES=n
  powerpc/kasan: Fix shadow start address with modules
  powerpc/kernel/iommu: Use largepool as a last resort when !largealloc
  powerpc/kernel/iommu: Align size for IOMMU_PAGE_SIZE() to save TCEs
  powerpc/44x: fix spelling mistake in Kconfig "varients" -> "variants"
  powerpc/iommu: Annotate nested lock for lockdep
  powerpc/iommu: Do not immediately panic when failed IOMMU table allocation
  powerpc/iommu: Allocate it_map by vmalloc
  selftests/powerpc: remove unneeded semicolon
  powerpc/64s: remove unneeded semicolon
  powerpc/eeh: remove unneeded semicolon
  powerpc/selftests: Add selftest to test concurrent perf/ptrace events
  powerpc/selftests/perf-hwbreak: Add testcases for 2nd DAWR
  powerpc/selftests/perf-hwbreak: Coalesce event creation code
  powerpc/selftests/ptrace-hwbreak: Add testcases for 2nd DAWR
  powerpc/configs: Add IBMVNIC to some 64-bit configs
  selftests/powerpc: Add uaccess flush test
  ...
 2021-04-30 12:22:28 -07:00
Linus Torvalds
437d1a5b66 Xtensa updates for v5.13: 
- switch to generic syscall generation scripts
 - new GDBIO implementation for xtensa semihosting interface
 - various small code fixes and cleanups
 - a few typo fixes in comments and Kconfig help text
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Merge tag 'xtensa-20210429' of git://github.com/jcmvbkbc/linux-xtensa

Pull Xtensa updates from Max Filippov:

 - switch to generic syscall generation scripts

 - new GDBIO implementation for xtensa semihosting interface

 - various small code fixes and cleanups

 - a few typo fixes in comments and Kconfig help text

* tag 'xtensa-20210429' of git://github.com/jcmvbkbc/linux-xtensa:
  xtensa: ISS: add GDBIO implementation to semihosting interface
  xtensa: ISS: split simcall implementation from semihosting interface
  xtensa: simcall.h: Change compitible to compatible
  xtensa: Couple of typo fixes
  xtensa: drop extraneous register load from initialize_mmu
  xtensa: fix pgprot_noncached assumptions
  xtensa: simplify coherent_kvaddr logic
  xtensa: syscalls: switch to generic syscallhdr.sh
  xtensa: syscalls: switch to generic syscalltbl.sh
  xtensa: stop filling syscall array with sys_ni_syscall
  xtensa: remove unneeded export in boot-elf/Makefile
  xtensa: move CONFIG_CPU_*_ENDIAN defines to Kconfig
  xtensa: fix warning comparing pointer to 0
  xtensa: fix spelling mistake in Kconfig "wont" -> "won't"
 2021-04-30 12:09:28 -07:00
Mike Snitzer
ca4a4e9a55 dm raid: remove unnecessary discard limits for raid0 and raid10 
Commit 29efc390b9 ("md/md0: optimize raid0 discard handling") and
commit d30588b273 ("md/raid10: improve raid10 discard request")
remove MD raid0's and raid10's inability to properly handle large
discards. So eliminate associated constraints from dm-raid's support.

Depends-on: 29efc390b9 ("md/md0: optimize raid0 discard handling")
Depends-on: d30588b273 ("md/raid10: improve raid10 discard request")
Reported-by: Matthew Ruffell <matthew.ruffell@canonical.com>
Signed-off-by: Mike Snitzer <snitzer@redhat.com>
 2021-04-30 14:38:37 -04:00
Jane Chu
4d75136be8 mm/memory-failure: unnecessary amount of unmapping 
It appears that unmap_mapping_range() actually takes a 'size' as its third
argument rather than a location, the current calling fashion causes
unnecessary amount of unmapping to occur.

Link: https://lkml.kernel.org/r/20210420002821.2749748-1-jane.chu@oracle.com
Fixes: 6100e34b25 ("mm, memory_failure: Teach memory_failure() about dev_pagemap pages")
Signed-off-by: Jane Chu <jane.chu@oracle.com>
Reviewed-by: Dan Williams <dan.j.williams@intel.com>
Reviewed-by: Naoya Horiguchi <naoya.horiguchi@nec.com>
Cc: Dave Jiang <dave.jiang@intel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
 2021-04-30 11:20:44 -07:00
Mike Rapoport
198fba4137 mm/mmzone.h: fix existing kernel-doc comments and link them to core-api 
There are a couple of kernel-doc comments in include/linux/mmzone.h but
they have minor formatting issues that would cause kernel-doc warnings.

Fix the formatting of those comments, add missing Return: descriptions and
link include/linux/mmzone.h to Documentation/core-api/mm-api.rst

Link: https://lkml.kernel.org/r/20210426141927.1314326-2-rppt@kernel.org
Signed-off-by: Mike Rapoport <rppt@linux.ibm.com>
Reviewed-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Reviewed-by: Anshuman Khandual <anshuman.khandual@arm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
 2021-04-30 11:20:43 -07:00
Sergei Trofimovich
9df65f5225 mm: page_alloc: ignore init_on_free=1 for debug_pagealloc=1 
On !ARCH_SUPPORTS_DEBUG_PAGEALLOC (like ia64) debug_pagealloc=1 implies
page_poison=on:

    if (page_poisoning_enabled() ||
         (!IS_ENABLED(CONFIG_ARCH_SUPPORTS_DEBUG_PAGEALLOC) &&
          debug_pagealloc_enabled()))
            static_branch_enable(&_page_poisoning_enabled);

page_poison=on needs to override init_on_free=1.

Before the change it did not work as expected for the following case:
- have PAGE_POISONING=y
- have page_poison unset
- have !ARCH_SUPPORTS_DEBUG_PAGEALLOC arch (like ia64)
- have init_on_free=1
- have debug_pagealloc=1

That way we get both keys enabled:
- static_branch_enable(&init_on_free);
- static_branch_enable(&_page_poisoning_enabled);

which leads to poisoned pages returned for __GFP_ZERO pages.

After the change we execute only:
- static_branch_enable(&_page_poisoning_enabled);
  and ignore init_on_free=1.

Link: https://lkml.kernel.org/r/20210329222555.3077928-1-slyfox@gentoo.org
Link: https://lkml.org/lkml/2021/3/26/443
Fixes: 8db26a3d47 ("mm, page_poison: use static key more efficiently")
Signed-off-by: Sergei Trofimovich <slyfox@gentoo.org>
Acked-by: Vlastimil Babka <vbabka@suse.cz>
Reviewed-by: David Hildenbrand <david@redhat.com>
Cc: Andrey Konovalov <andreyknvl@gmail.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
 2021-04-30 11:20:43 -07:00
Jesper Dangaard Brouer
be5dba25b4 net: page_pool: use alloc_pages_bulk in refill code path 
There are cases where the page_pool need to refill with pages from the
page allocator.  Some workloads cause the page_pool to release pages
instead of recycling these pages.

For these workload it can improve performance to bulk alloc pages from the
page-allocator to refill the alloc cache.

For XDP-redirect workload with 100G mlx5 driver (that use page_pool)
redirecting xdp_frame packets into a veth, that does XDP_PASS to create an
SKB from the xdp_frame, which then cannot return the page to the
page_pool.

Performance results under GitHub xdp-project[1]:
 [1] https://github.com/xdp-project/xdp-project/blob/master/areas/mem/page_pool06_alloc_pages_bulk.org

Mel: The patch "net: page_pool: convert to use alloc_pages_bulk_array
variant" was squashed with this patch. From the test page, the array
variant was superior with one of the test results as follows.

	Kernel		XDP stats       CPU     pps           Delta
	Baseline	XDP-RX CPU      total   3,771,046       n/a
	List		XDP-RX CPU      total   3,940,242    +4.49%
	Array		XDP-RX CPU      total   4,249,224   +12.68%

Link: https://lkml.kernel.org/r/20210325114228.27719-10-mgorman@techsingularity.net
Signed-off-by: Jesper Dangaard Brouer <brouer@redhat.com>
Signed-off-by: Mel Gorman <mgorman@techsingularity.net>
Reviewed-by: Alexander Lobakin <alobakin@pm.me>
Cc: Alexander Duyck <alexander.duyck@gmail.com>
Cc: Christoph Hellwig <hch@infradead.org>
Cc: Chuck Lever <chuck.lever@oracle.com>
Cc: David Miller <davem@davemloft.net>
Cc: Ilias Apalodimas <ilias.apalodimas@linaro.org>
Cc: Matthew Wilcox (Oracle) <willy@infradead.org>
Cc: Vlastimil Babka <vbabka@suse.cz>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
 2021-04-30 11:20:43 -07:00
Jesper Dangaard Brouer
dfa59717b9 net: page_pool: refactor dma_map into own function page_pool_dma_map 
In preparation for next patch, move the dma mapping into its own function,
as this will make it easier to follow the changes.

[ilias.apalodimas: make page_pool_dma_map return boolean]

Link: https://lkml.kernel.org/r/20210325114228.27719-9-mgorman@techsingularity.net
Signed-off-by: Jesper Dangaard Brouer <brouer@redhat.com>
Signed-off-by: Mel Gorman <mgorman@techsingularity.net>
Reviewed-by: Ilias Apalodimas <ilias.apalodimas@linaro.org>
Reviewed-by: Alexander Lobakin <alobakin@pm.me>
Cc: Alexander Duyck <alexander.duyck@gmail.com>
Cc: Christoph Hellwig <hch@infradead.org>
Cc: Chuck Lever <chuck.lever@oracle.com>
Cc: David Miller <davem@davemloft.net>
Cc: Matthew Wilcox (Oracle) <willy@infradead.org>
Cc: Vlastimil Babka <vbabka@suse.cz>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
 2021-04-30 11:20:43 -07:00
Chuck Lever
f6e70aab9d SUNRPC: refresh rq_pages using a bulk page allocator 
Reduce the rate at which nfsd threads hammer on the page allocator.  This
improves throughput scalability by enabling the threads to run more
independently of each other.

[mgorman: Update interpretation of alloc_pages_bulk return value]

Link: https://lkml.kernel.org/r/20210325114228.27719-8-mgorman@techsingularity.net
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Signed-off-by: Mel Gorman <mgorman@techsingularity.net>
Reviewed-by: Alexander Lobakin <alobakin@pm.me>
Cc: Alexander Duyck <alexander.duyck@gmail.com>
Cc: Christoph Hellwig <hch@infradead.org>
Cc: David Miller <davem@davemloft.net>
Cc: Ilias Apalodimas <ilias.apalodimas@linaro.org>
Cc: Jesper Dangaard Brouer <brouer@redhat.com>
Cc: Matthew Wilcox (Oracle) <willy@infradead.org>
Cc: Vlastimil Babka <vbabka@suse.cz>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
 2021-04-30 11:20:43 -07:00
Chuck Lever
ab8362645f SUNRPC: set rq_page_end differently 
Patch series "SUNRPC consumer for the bulk page allocator"

This patch set and the measurements below are based on yesterday's
bulk allocator series:

  git://git.kernel.org/pub/scm/linux/kernel/git/mel/linux.git mm-bulk-rebase-v5r9

The patches change SUNRPC to invoke the array-based bulk allocator
instead of alloc_page().

The micro-benchmark results are promising.  I ran a mixture of 256KB
reads and writes over NFSv3.  The server's kernel is built with KASAN
enabled, so the comparison is exaggerated but I believe it is still
valid.

I instrumented svc_recv() to measure the latency of each call to
svc_alloc_arg() and report it via a trace point.  The following results
are averages across the trace events.

  Single page: 25.007 us per call over 532,571 calls
  Bulk list:    6.258 us per call over 517,034 calls
  Bulk array:   4.590 us per call over 517,442 calls

This patch (of 2)

Refactor:

I'm about to use the loop variable @i for something else.

As far as the "i++" is concerned, that is a post-increment. The
value of @i is not used subsequently, so the increment operator
is unnecessary and can be removed.

Also note that nfsd_read_actor() was renamed nfsd_splice_actor()
by commit cf8208d0ea ("sendfile: convert nfsd to
splice_direct_to_actor()").

Link: https://lkml.kernel.org/r/20210325114228.27719-7-mgorman@techsingularity.net
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Signed-off-by: Mel Gorman <mgorman@techsingularity.net>
Reviewed-by: Alexander Lobakin <alobakin@pm.me>
Cc: Alexander Duyck <alexander.duyck@gmail.com>
Cc: Christoph Hellwig <hch@infradead.org>
Cc: David Miller <davem@davemloft.net>
Cc: Ilias Apalodimas <ilias.apalodimas@linaro.org>
Cc: Jesper Dangaard Brouer <brouer@redhat.com>
Cc: Matthew Wilcox (Oracle) <willy@infradead.org>
Cc: Vlastimil Babka <vbabka@suse.cz>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
 2021-04-30 11:20:43 -07:00
Jesper Dangaard Brouer
3b822017b6 mm/page_alloc: inline __rmqueue_pcplist 
When __alloc_pages_bulk() got introduced two callers of __rmqueue_pcplist
exist and the compiler chooses to not inline this function.

  ./scripts/bloat-o-meter vmlinux-before vmlinux-inline__rmqueue_pcplist
  add/remove: 0/1 grow/shrink: 2/0 up/down: 164/-125 (39)
  Function                                     old     new   delta
  rmqueue                                     2197    2296     +99
  __alloc_pages_bulk                          1921    1986     +65
  __rmqueue_pcplist                            125       -    -125
  Total: Before=19374127, After=19374166, chg +0.00%

modprobe page_bench04_bulk loops=$((10**7))

Type:time_bulk_page_alloc_free_array
 -  Per elem: 106 cycles(tsc) 29.595 ns (step:64)
 - (measurement period time:0.295955434 sec time_interval:295955434)
 - (invoke count:10000000 tsc_interval:1065447105)

Before:
 - Per elem: 110 cycles(tsc) 30.633 ns (step:64)

Link: https://lkml.kernel.org/r/20210325114228.27719-6-mgorman@techsingularity.net
Signed-off-by: Jesper Dangaard Brouer <brouer@redhat.com>
Signed-off-by: Mel Gorman <mgorman@techsingularity.net>
Reviewed-by: Alexander Lobakin <alobakin@pm.me>
Acked-by: Vlastimil Babka <vbabka@suse.cz>
Cc: Alexander Duyck <alexander.duyck@gmail.com>
Cc: Christoph Hellwig <hch@infradead.org>
Cc: Chuck Lever <chuck.lever@oracle.com>
Cc: David Miller <davem@davemloft.net>
Cc: Ilias Apalodimas <ilias.apalodimas@linaro.org>
Cc: Matthew Wilcox (Oracle) <willy@infradead.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
 2021-04-30 11:20:43 -07:00
Jesper Dangaard Brouer
ce76f9a1d9 mm/page_alloc: optimize code layout for __alloc_pages_bulk 
Looking at perf-report and ASM-code for __alloc_pages_bulk() it is clear
that the code activated is suboptimal.  The compiler guesses wrong and
places unlikely code at the beginning.  Due to the use of WARN_ON_ONCE()
macro the UD2 asm instruction is added to the code, which confuse the
I-cache prefetcher in the CPU.

[mgorman@techsingularity.net: minor changes and rebasing]

Link: https://lkml.kernel.org/r/20210325114228.27719-5-mgorman@techsingularity.net
Signed-off-by: Jesper Dangaard Brouer <brouer@redhat.com>
Signed-off-by: Mel Gorman <mgorman@techsingularity.net>
Reviewed-by: Alexander Lobakin <alobakin@pm.me>
Acked-By: Vlastimil Babka <vbabka@suse.cz>
Cc: Alexander Duyck <alexander.duyck@gmail.com>
Cc: Christoph Hellwig <hch@infradead.org>
Cc: Chuck Lever <chuck.lever@oracle.com>
Cc: David Miller <davem@davemloft.net>
Cc: Ilias Apalodimas <ilias.apalodimas@linaro.org>
Cc: Matthew Wilcox (Oracle) <willy@infradead.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
 2021-04-30 11:20:43 -07:00
Mel Gorman
0f87d9d30f mm/page_alloc: add an array-based interface to the bulk page allocator 
The proposed callers for the bulk allocator store pages from the bulk
allocator in an array.  This patch adds an array-based interface to the
API to avoid multiple list iterations.  The page list interface is
preserved to avoid requiring all users of the bulk API to allocate and
manage enough storage to store the pages.

[akpm@linux-foundation.org: remove now unused local `allocated']

Link: https://lkml.kernel.org/r/20210325114228.27719-4-mgorman@techsingularity.net
Signed-off-by: Mel Gorman <mgorman@techsingularity.net>
Reviewed-by: Alexander Lobakin <alobakin@pm.me>
Acked-by: Vlastimil Babka <vbabka@suse.cz>
Cc: Alexander Duyck <alexander.duyck@gmail.com>
Cc: Christoph Hellwig <hch@infradead.org>
Cc: Chuck Lever <chuck.lever@oracle.com>
Cc: David Miller <davem@davemloft.net>
Cc: Ilias Apalodimas <ilias.apalodimas@linaro.org>
Cc: Jesper Dangaard Brouer <brouer@redhat.com>
Cc: Matthew Wilcox (Oracle) <willy@infradead.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
 2021-04-30 11:20:43 -07:00
Mel Gorman
387ba26fb1 mm/page_alloc: add a bulk page allocator 
This patch adds a new page allocator interface via alloc_pages_bulk, and
__alloc_pages_bulk_nodemask.  A caller requests a number of pages to be
allocated and added to a list.

The API is not guaranteed to return the requested number of pages and
may fail if the preferred allocation zone has limited free memory, the
cpuset changes during the allocation or page debugging decides to fail
an allocation.  It's up to the caller to request more pages in batch if
necessary.

Note that this implementation is not very efficient and could be
improved but it would require refactoring.  The intent is to make it
available early to determine what semantics are required by different
callers.  Once the full semantics are nailed down, it can be refactored.

[mgorman@techsingularity.net: fix alloc_pages_bulk() return type, per Matthew]
  Link: https://lkml.kernel.org/r/20210325123713.GQ3697@techsingularity.net
[mgorman@techsingularity.net: fix uninit var warning]
  Link: https://lkml.kernel.org/r/20210330114847.GX3697@techsingularity.net
[mgorman@techsingularity.net: fix comment, per Vlastimil]
  Link: https://lkml.kernel.org/r/20210412110255.GV3697@techsingularity.net

Link: https://lkml.kernel.org/r/20210325114228.27719-3-mgorman@techsingularity.net
Signed-off-by: Mel Gorman <mgorman@techsingularity.net>
Acked-by: Vlastimil Babka <vbabka@suse.cz>
Reviewed-by: Alexander Lobakin <alobakin@pm.me>
Tested-by: Colin Ian King <colin.king@canonical.com>
Cc: Alexander Duyck <alexander.duyck@gmail.com>
Cc: Christoph Hellwig <hch@infradead.org>
Cc: Chuck Lever <chuck.lever@oracle.com>
Cc: David Miller <davem@davemloft.net>
Cc: Ilias Apalodimas <ilias.apalodimas@linaro.org>
Cc: Jesper Dangaard Brouer <brouer@redhat.com>
Cc: Matthew Wilcox (Oracle) <willy@infradead.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
 2021-04-30 11:20:43 -07:00
Mel Gorman
cb66bede61 mm/page_alloc: rename alloced to allocated 
Patch series "Introduce a bulk order-0 page allocator with two in-tree users", v6.

This series introduces a bulk order-0 page allocator with sunrpc and the
network page pool being the first users.  The implementation is not
efficient as semantics needed to be ironed out first.  If no other
semantic changes are needed, it can be made more efficient.  Despite that,
this is a performance-related for users that require multiple pages for an
operation without multiple round-trips to the page allocator.  Quoting the
last patch for the high-speed networking use-case

            Kernel          XDP stats       CPU     pps           Delta
            Baseline        XDP-RX CPU      total   3,771,046       n/a
            List            XDP-RX CPU      total   3,940,242    +4.49%
            Array           XDP-RX CPU      total   4,249,224   +12.68%

Via the SUNRPC traces of svc_alloc_arg()

	Single page: 25.007 us per call over 532,571 calls
	Bulk list:    6.258 us per call over 517,034 calls
	Bulk array:   4.590 us per call over 517,442 calls

Both potential users in this series are corner cases (NFS and high-speed
networks) so it is unlikely that most users will see any benefit in the
short term.  Other potential other users are batch allocations for page
cache readahead, fault around and SLUB allocations when high-order pages
are unavailable.  It's unknown how much benefit would be seen by
converting multiple page allocation calls to a single batch or what
difference it may make to headline performance.

Light testing of my own running dbench over NFS passed.  Chuck and Jesper
conducted their own tests and details are included in the changelogs.

Patch 1 renames a variable name that is particularly unpopular

Patch 2 adds a bulk page allocator

Patch 3 adds an array-based version of the bulk allocator

Patches 4-5 adds micro-optimisations to the implementation

Patches 6-7 SUNRPC user

Patches 8-9 Network page_pool user

This patch (of 9):

Review feedback of the bulk allocator twice found problems with "alloced"
being a counter for pages allocated.  The naming was based on the API name
"alloc" and was based on the idea that verbal communication about malloc
tends to use the fake word "malloced" instead of the fake word mallocated.
To be consistent, this preparation patch renames alloced to allocated in
rmqueue_bulk so the bulk allocator and per-cpu allocator use similar names
when the bulk allocator is introduced.

Link: https://lkml.kernel.org/r/20210325114228.27719-1-mgorman@techsingularity.net
Link: https://lkml.kernel.org/r/20210325114228.27719-2-mgorman@techsingularity.net
Signed-off-by: Mel Gorman <mgorman@techsingularity.net>
Reviewed-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Reviewed-by: Alexander Lobakin <alobakin@pm.me>
Acked-by: Vlastimil Babka <vbabka@suse.cz>
Cc: Chuck Lever <chuck.lever@oracle.com>
Cc: Jesper Dangaard Brouer <brouer@redhat.com>
Cc: Christoph Hellwig <hch@infradead.org>
Cc: Alexander Duyck <alexander.duyck@gmail.com>
Cc: Ilias Apalodimas <ilias.apalodimas@linaro.org>
Cc: David Miller <davem@davemloft.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
 2021-04-30 11:20:43 -07:00
zhouchuangao
8f709dbdf9 mm/page_alloc: duplicate include linux/vmalloc.h 
linux/vmalloc.h is repeatedly in the file page_alloc.c

Link: https://lkml.kernel.org/r/1616468751-80656-1-git-send-email-zhouchuangao@vivo.com
Signed-off-by: zhouchuangao <zhouchuangao@vivo.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
 2021-04-30 11:20:43 -07:00
Kefeng Wang
39ddb991fc mm, page_alloc: avoid page_to_pfn() in move_freepages() 
The start_pfn and end_pfn are already available in move_freepages_block(),
there is no need to go back and forth between page and pfn in
move_freepages and move_freepages_block, and pfn_valid_within() should
validate pfn first before touching the page.

Link: https://lkml.kernel.org/r/20210323131215.934472-1-liushixin2@huawei.com
Signed-off-by: Kefeng Wang <wangkefeng.wang@huawei.com>
Signed-off-by: Liu Shixin <liushixin2@huawei.com>
Reviewed-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Acked-by: Vlastimil Babka <vbabka@suse.cz>
Cc: Stephen Rothwell <sfr@canb.auug.org.au>
Cc: Michal Hocko <mhocko@suse.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
 2021-04-30 11:20:43 -07:00
Geert Uytterhoeven
d68d015a7e mm/Kconfig: remove default DISCONTIGMEM_MANUAL 
Commit 214496cb18 ("ia64: make SPARSEMEM default and disable
DISCONTIGMEM") removed the last enabler of ARCH_DISCONTIGMEM_DEFAULT,
hence the memory model can no longer default to DISCONTIGMEM_MANUAL.

Link: https://lkml.kernel.org/r/20210312141208.3465520-1-geert@linux-m68k.org
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
Reviewed-by: Mike Rapoport <rppt@linux.ibm.com>
Reviewed-by: David Hildenbrand <david@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
 2021-04-30 11:20:43 -07:00
Minchan Kim
a1394bddf9 mm: page_alloc: dump migrate-failed pages 
Currently, debugging CMA allocation failures is quite limited.  The most
common source of these failures seems to be page migration which doesn't
provide any useful information on the reason of the failure by itself.
alloc_contig_range can report those failures as it holds a list of
migrate-failed pages.

The information logged by dump_page() has already proven helpful for
debugging allocation issues, like identifying long-term pinnings on
ZONE_MOVABLE or MIGRATE_CMA.

Let's use the dynamic debugging infrastructure, such that we avoid
flooding the logs and creating a lot of noise on frequent
alloc_contig_range() calls.  This information is helpful for debugging
only.

There are two ifdefery conditions to support common dyndbg options:

 - CONFIG_DYNAMIC_DEBUG_CORE && DYNAMIC_DEBUG_MODULE
   It aims for supporting the feature with only specific file with
   adding ccflags.

 - CONFIG_DYNAMIC_DEBUG
   It aims for supporting the feature with system wide globally.

A simple example to enable the feature:

Admin could enable the dump like this(by default, disabled)

	echo "func alloc_contig_dump_pages +p" > control

Admin could disable it.

	echo "func alloc_contig_dump_pages =_" > control

Detail goes Documentation/admin-guide/dynamic-debug-howto.rst

A concern is utility functions in dump_page use inconsistent
loglevels. In the future, we might want to make the loglevels
used inside dump_page() consistent and eventually rework the way
we log the information here. See [1].

[1] https://lore.kernel.org/linux-mm/YEh4doXvyuRl5BDB@google.com/

Link: https://lkml.kernel.org/r/20210311194042.825152-1-minchan@kernel.org
Signed-off-by: Minchan Kim <minchan@kernel.org>
Reviewed-by: David Hildenbrand <david@redhat.com>
Cc: John Dias <joaodias@google.com>
Cc: Michal Hocko <mhocko@suse.com>
Cc: David Hildenbrand <david@redhat.com>
Cc: Jason Baron <jbaron@akamai.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
 2021-04-30 11:20:43 -07:00
Matthew Wilcox (Oracle)
5f076944f0 mm/mempolicy: fix mpol_misplaced kernel-doc 
Sphinx interprets the Return section as a list and complains about it.
Turn it into a sentence and move it to the end of the kernel-doc to fit
the kernel-doc style.

Link: https://lkml.kernel.org/r/20210225150642.2582252-8-willy@infradead.org
Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Acked-by: Mike Rapoport <rppt@linux.ibm.com>
Acked-by: Vlastimil Babka <vbabka@suse.cz>
Cc: Michal Hocko <mhocko@suse.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
 2021-04-30 11:20:43 -07:00
Matthew Wilcox (Oracle)
eb35073960 mm/mempolicy: rewrite alloc_pages_vma documentation 
The current formatting doesn't quite work with kernel-doc.

Link: https://lkml.kernel.org/r/20210225150642.2582252-7-willy@infradead.org
Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Acked-by: Mike Rapoport <rppt@linux.ibm.com>
Acked-by: Vlastimil Babka <vbabka@suse.cz>
Cc: Michal Hocko <mhocko@suse.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
 2021-04-30 11:20:43 -07:00
Matthew Wilcox (Oracle)
6421ec764a mm/mempolicy: rewrite alloc_pages documentation 
Document alloc_pages() for both NUMA and non-NUMA cases as kernel-doc
doesn't care.

Link: https://lkml.kernel.org/r/20210225150642.2582252-6-willy@infradead.org
Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Acked-by: Mike Rapoport <rppt@linux.ibm.com>
Acked-by: Michal Hocko <mhocko@suse.com>
Acked-by: Vlastimil Babka <vbabka@suse.cz>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
 2021-04-30 11:20:43 -07:00
Matthew Wilcox (Oracle)
d7f946d0fa mm/mempolicy: rename alloc_pages_current to alloc_pages 
When CONFIG_NUMA is enabled, alloc_pages() is a wrapper around
alloc_pages_current().  This is pointless, just implement alloc_pages()
directly.

Link: https://lkml.kernel.org/r/20210225150642.2582252-5-willy@infradead.org
Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Acked-by: Vlastimil Babka <vbabka@suse.cz>
Acked-by: Michal Hocko <mhocko@suse.com>
Cc: Mike Rapoport <rppt@linux.ibm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
 2021-04-30 11:20:43 -07:00
Matthew Wilcox (Oracle)
84172f4bb7 mm/page_alloc: combine __alloc_pages and __alloc_pages_nodemask 
There are only two callers of __alloc_pages() so prune the thicket of
alloc_page variants by combining the two functions together.  Current
callers of __alloc_pages() simply add an extra 'NULL' parameter and
current callers of __alloc_pages_nodemask() call __alloc_pages() instead.

Link: https://lkml.kernel.org/r/20210225150642.2582252-4-willy@infradead.org
Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Acked-by: Vlastimil Babka <vbabka@suse.cz>
Acked-by: Michal Hocko <mhocko@suse.com>
Cc: Mike Rapoport <rppt@linux.ibm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
 2021-04-30 11:20:42 -07:00
Matthew Wilcox (Oracle)
6e5e0f286e mm/page_alloc: rename gfp_mask to gfp 
Shorten some overly-long lines by renaming this identifier.

Link: https://lkml.kernel.org/r/20210225150642.2582252-3-willy@infradead.org
Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Acked-by: Vlastimil Babka <vbabka@suse.cz>
Cc: Michal Hocko <mhocko@suse.com>
Cc: Mike Rapoport <rppt@linux.ibm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
 2021-04-30 11:20:42 -07:00
Matthew Wilcox (Oracle)
8e6a930bb3 mm/page_alloc: rename alloc_mask to alloc_gfp 
Patch series "Rationalise __alloc_pages wrappers", v3.

I was poking around the __alloc_pages variants trying to understand why
they each exist, and couldn't really find a good justification for keeping
__alloc_pages and __alloc_pages_nodemask as separate functions.  That led
to getting rid of alloc_pages_current() and then I noticed the
documentation was bad, and then I noticed the mempolicy documentation
wasn't included.

Anyway, this is all cleanups & doc fixes.

This patch (of 7):

We have two masks involved -- the nodemask and the gfp mask, so alloc_mask
is an unclear name.

Link: https://lkml.kernel.org/r/20210225150642.2582252-2-willy@infradead.org
Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Acked-by: Vlastimil Babka <vbabka@suse.cz>
Cc: Michal Hocko <mhocko@suse.com>
Cc: Mike Rapoport <rppt@linux.ibm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
 2021-04-30 11:20:42 -07:00
Yu Zhao
1587db62d8 include/linux/page-flags-layout.h: cleanups 
Tidy things up and delete comments stating the obvious with typos or
making no sense.

Link: https://lkml.kernel.org/r/20210303071609.797782-2-yuzhao@google.com
Signed-off-by: Yu Zhao <yuzhao@google.com>
Cc: Matthew Wilcox <willy@infradead.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
 2021-04-30 11:20:42 -07:00
Yu Zhao
f73c6c8805 include/linux/page-flags-layout.h: correctly determine LAST_CPUPID_WIDTH 
The naming convention used in include/linux/page-flags-layout.h:
  *_SHIFT: the number of bits trying to allocate
  *_WIDTH: the number of bits successfully allocated

So when it comes to LAST_CPUPID_WIDTH, we need to check whether all
previous *_WIDTH and LAST_CPUPID_SHIFT can fit into page flags. This
means we need to use NODES_WIDTH, not NODES_SHIFT.

Link: https://lkml.kernel.org/r/20210303071609.797782-1-yuzhao@google.com
Signed-off-by: Yu Zhao <yuzhao@google.com>
Cc: Matthew Wilcox <willy@infradead.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
 2021-04-30 11:20:42 -07:00
Minchan Kim
cef4c7d29d mm: remove lru_add_drain_all in alloc_contig_range 
__alloc_contig_migrate_range already has lru_add_drain_all call via
migrate_prep.  It's necessary to move LRU taget pages into LRU list to be
able to isolated.  However, lru_add_drain_all call after
__alloc_contig_migrate_range is pointless since it has changed source page
freeing from putback_lru_pages to put_page[1].

This patch removes it.

[1] c6c919eb90, ("mm: use put_page() to free page instead of putback_lru_page()"

Link: https://lkml.kernel.org/r/20210303204512.2863087-1-minchan@kernel.org
Signed-off-by: Minchan Kim <minchan@kernel.org>
Reviewed-by: Oscar Salvador <osalvador@suse.de>
Acked-by: Vlastimil Babka <vbabka@suse.cz>
Acked-by: Michal Hocko <mhocko@suse.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
 2021-04-30 11:20:42 -07:00
David Hildenbrand
77febec206 mm/page_alloc: drop pr_info_ratelimited() in alloc_contig_range() 
The information that some PFNs are busy is:

a) not helpful for ordinary users: we don't even know *who* called
   alloc_contig_range(). This is certainly not worth a pr_info.*().

b) not really helpful for debugging: we don't have any details *why*
   these PFNs are busy, and that is what we usually care about.

c) not complete: there are other cases where we fail alloc_contig_range()
   using different paths that are not getting recorded.

For example, we reach this path once we succeeded in isolating pageblocks,
but failed to migrate some pages - which can happen easily on ZONE_NORMAL
(i.e., has_unmovable_pages() is racy) but also on ZONE_MOVABLE i.e., we
would have to retry longer to migrate).

For example via virtio-mem when unplugging memory, we can create quite
some noise (especially with ZONE_NORMAL) that is not of interest to users
- it's expected that some allocations may fail as memory is busy.

Let's just drop that pr_info_ratelimit() and rather implement a dynamic
debugging mechanism in the future that can give us a better reason why
alloc_contig_range() failed on specific pages.

Link: https://lkml.kernel.org/r/20210301150945.77012-1-david@redhat.com
Signed-off-by: David Hildenbrand <david@redhat.com>
Reviewed-by: Zi Yan <ziy@nvidia.com>
Acked-by: Michal Hocko <mhocko@suse.com>
Reviewed-by: Oscar Salvador <osalvador@suse.de>
Acked-by: Minchan Kim <minchan@kernel.org>
Cc: Vlastimil Babka <vbabka@suse.cz>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
 2021-04-30 11:20:42 -07:00
Kefeng Wang
1f9d03c5e9 mm: move mem_init_print_info() into mm_init() 
mem_init_print_info() is called in mem_init() on each architecture, and
pass NULL argument, so using void argument and move it into mm_init().

Link: https://lkml.kernel.org/r/20210317015210.33641-1-wangkefeng.wang@huawei.com
Signed-off-by: Kefeng Wang <wangkefeng.wang@huawei.com>
Acked-by: Dave Hansen <dave.hansen@linux.intel.com>	[x86]
Reviewed-by: Christophe Leroy <christophe.leroy@c-s.fr>	[powerpc]
Acked-by: David Hildenbrand <david@redhat.com>
Tested-by: Anatoly Pugachev <matorola@gmail.com>	[sparc64]
Acked-by: Russell King <rmk+kernel@armlinux.org.uk>	[arm]
Acked-by: Mike Rapoport <rppt@linux.ibm.com>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Richard Henderson <rth@twiddle.net>
Cc: Guo Ren <guoren@kernel.org>
Cc: Yoshinori Sato <ysato@users.osdn.me>
Cc: Huacai Chen <chenhuacai@kernel.org>
Cc: Jonas Bonn <jonas@southpole.se>
Cc: Palmer Dabbelt <palmer@dabbelt.com>
Cc: Heiko Carstens <hca@linux.ibm.com>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: "Peter Zijlstra" <peterz@infradead.org>
Cc: Ingo Molnar <mingo@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
 2021-04-30 11:20:42 -07:00
Zqiang
e2b5bcf9f5 irq_work: record irq_work_queue() call stack 
Add the irq_work_queue() call stack into the KASAN auxiliary stack in
order to improve KASAN reports.  this will let us know where the irq work
be queued.

Link: https://lkml.kernel.org/r/20210331063202.28770-1-qiang.zhang@windriver.com
Signed-off-by: Zqiang <qiang.zhang@windriver.com>
Reviewed-by: Dmitry Vyukov <dvyukov@google.com>
Acked-by: Andrey Konovalov <andreyknvl@gmail.com>
Cc: Andrey Ryabinin <ryabinin.a.a@gmail.com>
Cc: Alexander Potapenko <glider@google.com>
Cc: Matthias Brugger <matthias.bgg@gmail.com>
Cc: Oleg Nesterov <oleg@redhat.com>
Cc: Walter Wu <walter-zh.wu@mediatek.com>
Cc: Frederic Weisbecker <frederic@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
 2021-04-30 11:20:42 -07:00
Andrey Konovalov
99734b535d kasan: detect false-positives in tests 
Currently, KASAN-KUnit tests can check that a particular annotated part of
code causes a KASAN report.  However, they do not check that no unwanted
reports happen between the annotated parts.

This patch implements these checks.

It is done by setting report_data.report_found to false in
kasan_test_init() and at the end of KUNIT_EXPECT_KASAN_FAIL() and then
checking that it remains false at the beginning of
KUNIT_EXPECT_KASAN_FAIL() and in kasan_test_exit().

kunit_add_named_resource() call is moved to kasan_test_init(), and the
value of fail_data.report_expected is kept as false in between
KUNIT_EXPECT_KASAN_FAIL() annotations for consistency.

Link: https://lkml.kernel.org/r/48079c52cc329fbc52f4386996598d58022fb872.1617207873.git.andreyknvl@google.com
Signed-off-by: Andrey Konovalov <andreyknvl@google.com>
Reviewed-by: Marco Elver <elver@google.com>
Cc: Alexander Potapenko <glider@google.com>
Cc: Dmitry Vyukov <dvyukov@google.com>
Cc: Andrey Ryabinin <aryabinin@virtuozzo.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
 2021-04-30 11:20:42 -07:00
Walter Wu
23f61f0fe1 kasan: record task_work_add() call stack 
Why record task_work_add() call stack?  Syzbot reports many use-after-free
issues for task_work, see [1].  After seeing the free stack and the
current auxiliary stack, we think they are useless, we don't know where
the work was registered.  This work may be the free call stack, so we miss
the root cause and don't solve the use-after-free.

Add the task_work_add() call stack into the KASAN auxiliary stack in order
to improve KASAN reports.  It helps programmers solve use-after-free
issues.

[1]: https://groups.google.com/g/syzkaller-bugs/search?q=kasan%20use-after-free%20task_work_run

Link: https://lkml.kernel.org/r/20210316024410.19967-1-walter-zh.wu@mediatek.com
Signed-off-by: Walter Wu <walter-zh.wu@mediatek.com>
Suggested-by: Dmitry Vyukov <dvyukov@google.com>
Reviewed-by: Dmitry Vyukov <dvyukov@google.com>
Reviewed-by: Jens Axboe <axboe@kernel.dk>
Acked-by: Oleg Nesterov <oleg@redhat.com>
Acked-by: Andrey Konovalov <andreyknvl@google.com>
Cc: Andrey Ryabinin <ryabinin.a.a@gmail.com>
Cc: Alexander Potapenko <glider@google.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Matthias Brugger <matthias.bgg@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
 2021-04-30 11:20:42 -07:00
Andrey Konovalov
fc23c074ef kasan: docs: update tests section 
Update the "Tests" section in KASAN documentation:

 - Add an introductory sentence.

 - Add proper indentation for the list of ways to run KUnit tests.

 - Punctuation, readability, and other minor clean-ups.

Link: https://lkml.kernel.org/r/fb08845e25c8847ffda271fa19cda2621c04a65b.1615559068.git.andreyknvl@google.com
Signed-off-by: Andrey Konovalov <andreyknvl@google.com>
Reviewed-by: Marco Elver <elver@google.com>
Cc: Alexander Potapenko <glider@google.com>
Cc: Andrey Ryabinin <aryabinin@virtuozzo.com>
Cc: Dmitry Vyukov <dvyukov@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
 2021-04-30 11:20:42 -07:00