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Author SHA1 Message Date
Linus Torvalds
e5e1170364 workqueue: Fixes for v6.6-rc5 
* Fix access-after-free in pwq allocation error path.
 
 * Implicitly ordered unbound workqueues should lose the implicit ordering if
   an attribute change which isn't compatible with ordered operation is
   requested. However, attribute changes requested through the sysfs
   interface weren't doing that leaving no way to override the implicit
   ordering through the sysfs interface. Fix it.
 
 * Other doc and misc updates.
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Merge tag 'wq-for-6.6-rc5-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/wq

Pull workqueue fixes from Tejun Heo:

 - Fix access-after-free in pwq allocation error path

 - Implicitly ordered unbound workqueues should lose the implicit
   ordering if an attribute change which isn't compatible with ordered
   operation is requested. However, attribute changes requested through
   the sysfs interface weren't doing that leaving no way to override the
   implicit ordering through the sysfs interface. Fix it.

 - Other doc and misc updates

* tag 'wq-for-6.6-rc5-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/wq:
  workqueue: fix -Wformat-truncation in create_worker
  workqueue: Override implicit ordered attribute in workqueue_apply_unbound_cpumask()
  workqueue: Use the kmem_cache_free() instead of kfree() to release pwq
  workqueue: doc: Fix function and sysfs path errors
  workqueue: Fix UAF report by KASAN in pwq_release_workfn()
 2023-10-12 17:16:10 -07:00
WangJinchao
bd9e7326b8 workqueue: doc: Fix function and sysfs path errors 
alloc_ordered_queue -> alloc_ordered_workqueue
/sys/devices/virtual/WQ_NAME/
    -> /sys/devices/virtual/workqueue/WQ_NAME/

Signed-off-by: WangJinchao <wangjinchao@xfusion.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
 2023-10-12 07:27:22 -10:00
Tiezhu Yang
e74a6b7f37 docs/zh_CN/LoongArch: Update the links of ABI 
The current links of ABI can not be found for some time, let us fix
the broken links.

By the way, the latest and official ABI documentation releases are
available at https://github.com/loongson/la-abi-specs, but there are
no Chinese and pdf versions for now, so just do the minimal changes
to update the links so that they can be found, hope there are stable
links in the future.

Signed-off-by: Tiezhu Yang <yangtiezhu@loongson.cn>
Signed-off-by: Huacai Chen <chenhuacai@loongson.cn>
 2023-09-20 14:26:38 +08:00
Linus Torvalds
12952b6bbd LoongArch changes for v6.6 
1, Allow usage of LSX/LASX in the kernel;
 2, Add SIMD-optimized RAID5/RAID6 routines;
 3, Add Loongson Binary Translation (LBT) extension support;
 4, Add basic KGDB & KDB support;
 5, Add building with kcov coverage;
 6, Add KFENCE (Kernel Electric-Fence) support;
 7, Add KASAN (Kernel Address Sanitizer) support;
 8, Some bug fixes and other small changes;
 9, Update the default config file.
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Merge tag 'loongarch-6.6' of git://git.kernel.org/pub/scm/linux/kernel/git/chenhuacai/linux-loongson

Pull LoongArch updates from Huacai Chen:

 - Allow usage of LSX/LASX in the kernel, and use them for
   SIMD-optimized RAID5/RAID6 routines

 - Add Loongson Binary Translation (LBT) extension support

 - Add basic KGDB & KDB support

 - Add building with kcov coverage

 - Add KFENCE (Kernel Electric-Fence) support

 - Add KASAN (Kernel Address Sanitizer) support

 - Some bug fixes and other small changes

 - Update the default config file

* tag 'loongarch-6.6' of git://git.kernel.org/pub/scm/linux/kernel/git/chenhuacai/linux-loongson: (25 commits)
  LoongArch: Update Loongson-3 default config file
  LoongArch: Add KASAN (Kernel Address Sanitizer) support
  LoongArch: Simplify the processing of jumping new kernel for KASLR
  kasan: Add (pmd|pud)_init for LoongArch zero_(pud|p4d)_populate process
  kasan: Add __HAVE_ARCH_SHADOW_MAP to support arch specific mapping
  LoongArch: Add KFENCE (Kernel Electric-Fence) support
  LoongArch: Get partial stack information when providing regs parameter
  LoongArch: mm: Add page table mapped mode support for virt_to_page()
  kfence: Defer the assignment of the local variable addr
  LoongArch: Allow building with kcov coverage
  LoongArch: Provide kaslr_offset() to get kernel offset
  LoongArch: Add basic KGDB & KDB support
  LoongArch: Add Loongson Binary Translation (LBT) extension support
  raid6: Add LoongArch SIMD recovery implementation
  raid6: Add LoongArch SIMD syndrome calculation
  LoongArch: Add SIMD-optimized XOR routines
  LoongArch: Allow usage of LSX/LASX in the kernel
  LoongArch: Define symbol 'fault' as a local label in fpu.S
  LoongArch: Adjust {copy, clear}_user exception handler behavior
  LoongArch: Use static defined zero page rather than allocated
  ...
 2023-09-08 12:16:52 -07:00
Qing Zhang
5aa4ac64e6 LoongArch: Add KASAN (Kernel Address Sanitizer) support 
1/8 of kernel addresses reserved for shadow memory. But for LoongArch,
There are a lot of holes between different segments and valid address
space (256T available) is insufficient to map all these segments to kasan
shadow memory with the common formula provided by kasan core, saying
(addr >> KASAN_SHADOW_SCALE_SHIFT) + KASAN_SHADOW_OFFSET

So LoongArch has a arch-specific mapping formula, different segments are
mapped individually, and only limited space lengths of these specific
segments are mapped to shadow.

At early boot stage the whole shadow region populated with just one
physical page (kasan_early_shadow_page). Later, this page is reused as
readonly zero shadow for some memory that kasan currently don't track.
After mapping the physical memory, pages for shadow memory are allocated
and mapped.

Functions like memset()/memcpy()/memmove() do a lot of memory accesses.
If bad pointer passed to one of these function it is important to be
caught. Compiler's instrumentation cannot do this since these functions
are written in assembly.

KASan replaces memory functions with manually instrumented variants.
Original functions declared as weak symbols so strong definitions in
mm/kasan/kasan.c could replace them. Original functions have aliases
with '__' prefix in names, so we could call non-instrumented variant
if needed.

Signed-off-by: Qing Zhang <zhangqing@loongson.cn>
Signed-off-by: Huacai Chen <chenhuacai@loongson.cn>
 2023-09-06 22:54:16 +08:00
Linus Torvalds
cd99b9eb4b Documentation work keeps chugging along; stuff for 6.6 includes: 
- Work from Carlos Bilbao to integrate rustdoc output into the generated
   HTML documentation.  This took some work to figure out how to do it
   without slowing the docs build and without creating people who don't have
   Rust installed, but Carlos got there.
 
 - Move the loongarch and mips architecture documentation under
   Documentation/arch/.
 
 - Some more maintainer documentation from Jakub
 
 ...plus the usual assortment of updates, translations, and fixes.
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Merge tag 'docs-6.6' of git://git.lwn.net/linux

Pull documentation updates from Jonathan Corbet:
 "Documentation work keeps chugging along; this includes:

   - Work from Carlos Bilbao to integrate rustdoc output into the
     generated HTML documentation. This took some work to figure out how
     to do it without slowing the docs build and without creating people
     who don't have Rust installed, but Carlos got there

   - Move the loongarch and mips architecture documentation under
     Documentation/arch/

   - Some more maintainer documentation from Jakub

  ... plus the usual assortment of updates, translations, and fixes"

* tag 'docs-6.6' of git://git.lwn.net/linux: (56 commits)
  Docu: genericirq.rst: fix irq-example
  input: docs: pxrc: remove reference to phoenix-sim
  Documentation: serial-console: Fix literal block marker
  docs/mm: remove references to hmm_mirror ops and clean typos
  docs/zh_CN: correct regi_chg(),regi_add() to region_chg(),region_add()
  Documentation: Fix typos
  Documentation/ABI: Fix typos
  scripts: kernel-doc: fix macro handling in enums
  scripts: kernel-doc: parse DEFINE_DMA_UNMAP_[ADDR|LEN]
  Documentation: riscv: Update boot image header since EFI stub is supported
  Documentation: riscv: Add early boot document
  Documentation: arm: Add bootargs to the table of added DT parameters
  docs: kernel-parameters: Refer to the correct bitmap function
  doc: update params of memhp_default_state=
  docs: Add book to process/kernel-docs.rst
  docs: sparse: fix invalid link addresses
  docs: vfs: clean up after the iterate() removal
  docs: Add a section on surveys to the researcher guidelines
  docs: move mips under arch
  docs: move loongarch under arch
  ...
 2023-08-30 20:05:42 -07:00
Matthew Wilcox (Oracle)
454a00c40a mm: convert free_huge_page() to free_huge_folio() 
Pass a folio instead of the head page to save a few instructions.  Update
the documentation, at least in English.

Link: https://lkml.kernel.org/r/20230816151201.3655946-4-willy@infradead.org
Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Reviewed-by: Sidhartha Kumar <sidhartha.kumar@oracle.com>
Cc: Yanteng Si <siyanteng@loongson.cn>
Cc: David Hildenbrand <david@redhat.com>
Cc: Jens Axboe <axboe@kernel.dk>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
 2023-08-21 14:28:43 -07:00
Vishal Moola (Oracle)
9a4bbd8d97 mm: remove pgtable_{pmd, pte}_page_{ctor, dtor}() wrappers 
These functions are no longer necessary.  Remove them and cleanup
Documentation referencing them.

Link: https://lkml.kernel.org/r/20230807230513.102486-32-vishal.moola@gmail.com
Signed-off-by: Vishal Moola (Oracle) <vishal.moola@gmail.com>
Acked-by: Mike Rapoport (IBM) <rppt@kernel.org>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Christophe Leroy <christophe.leroy@csgroup.eu>
Cc: Claudio Imbrenda <imbrenda@linux.ibm.com>
Cc: Dave Hansen <dave.hansen@linux.intel.com>
Cc: David Hildenbrand <david@redhat.com>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: Dinh Nguyen <dinguyen@kernel.org>
Cc: Geert Uytterhoeven <geert@linux-m68k.org>
Cc: Geert Uytterhoeven <geert+renesas@glider.be>
Cc: Guo Ren <guoren@kernel.org>
Cc: Huacai Chen <chenhuacai@kernel.org>
Cc: Hugh Dickins <hughd@google.com>
Cc: John Paul Adrian Glaubitz <glaubitz@physik.fu-berlin.de>
Cc: Jonas Bonn <jonas@southpole.se>
Cc: Matthew Wilcox <willy@infradead.org>
Cc: Palmer Dabbelt <palmer@rivosinc.com>
Cc: Paul Walmsley <paul.walmsley@sifive.com>
Cc: Richard Weinberger <richard@nod.at>
Cc: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
Cc: Yoshinori Sato <ysato@users.sourceforge.jp>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
 2023-08-21 13:37:58 -07:00
Johannes Weiner
42c06a0e8e mm: kill frontswap 
The only user of frontswap is zswap, and has been for a long time.  Have
swap call into zswap directly and remove the indirection.

[hannes@cmpxchg.org: remove obsolete comment, per Yosry]
  Link: https://lkml.kernel.org/r/20230719142832.GA932528@cmpxchg.org
[fengwei.yin@intel.com: don't warn if none swapcache folio is passed to zswap_load]
  Link: https://lkml.kernel.org/r/20230810095652.3905184-1-fengwei.yin@intel.com
Link: https://lkml.kernel.org/r/20230717160227.GA867137@cmpxchg.org
Signed-off-by: Johannes Weiner <hannes@cmpxchg.org>
Signed-off-by: Yin Fengwei <fengwei.yin@intel.com>
Acked-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Acked-by: Nhat Pham <nphamcs@gmail.com>
Acked-by: Yosry Ahmed <yosryahmed@google.com>
Acked-by: Christoph Hellwig <hch@lst.de>
Cc: Domenico Cerasuolo <cerasuolodomenico@gmail.com>
Cc: Matthew Wilcox (Oracle) <willy@infradead.org>
Cc: Vitaly Wool <vitaly.wool@konsulko.com>
Cc: Vlastimil Babka <vbabka@suse.cz>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
 2023-08-21 13:37:26 -07:00
Xueshi Hu
21b25bd111 docs/zh_CN: correct regi_chg(),regi_add() to region_chg(),region_add() 
Minor typo fix in translations.

Signed-off-by: Xueshi Hu <xueshi.hu@smartx.com>
Acked-by: Yanteng Si <siyanteng@loongson.cn>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Link: https://lore.kernel.org/r/20230813132417.815036-1-xueshi.hu@smartx.com
 2023-08-18 11:43:16 -06:00
Costa Shulyupin
ec62a746b6 docs: move mips under arch 
and fix all in-tree references.

Architecture-specific documentation is being moved into Documentation/arch/
as a way of cleaning up the top-level documentation directory and making
the docs hierarchy more closely match the source hierarchy.

Signed-off-by: Costa Shulyupin <costa.shul@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Link: https://lore.kernel.org/r/20230725043835.2249678-1-costa.shul@redhat.com
 2023-08-18 11:03:52 -06:00
Costa Shulyupin
51712e49b4 docs: move loongarch under arch 
and fix all in-tree references.

Architecture-specific documentation is being moved into Documentation/arch/
as a way of cleaning up the top-level documentation directory and making
the docs hierarchy more closely match the source hierarchy.

Signed-off-by: Costa Shulyupin <costa.shul@redhat.com>
Acked-by: Huacai Chen <chenhuacai@loongson.cn>
Reviewed-by: Yanteng Si <siyanteng@loongson.cn>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Link: https://lore.kernel.org/r/20230717192456.453124-1-costa.shul@redhat.com
 2023-08-18 11:03:52 -06:00
Hu Haowen
44a54e25b1 docs/zh_CN: change my own email address 
The previous email address was abandoned due to some reasons by myself, and
thus shift the email contents mentioned from the old email address
(src.res@email.cn) to the current version (src.res.211@gmail.com).

Signed-off-by: Hu Haowen <src.res.211@gmail.com>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Link: https://lore.kernel.org/r/20230707160119.26873-1-src.res.211@gmail.com
 2023-07-14 13:01:50 -06:00
Linus Torvalds
7210de3a32 A half-dozen late arriving docs patches. They are mostly fixes, but we 
also have a kernel-doc tweak for enums and the long-overdue removal of the
 outdated and redundant patch-submission comments at the top of the
 MAINTAINERS file.
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Merge tag 'docs-6.5-2' of git://git.lwn.net/linux

Pull mode documentation updates from Jonathan Corbet:
 "A half-dozen late arriving docs patches. They are mostly fixes, but we
  also have a kernel-doc tweak for enums and the long-overdue removal of
  the outdated and redundant patch-submission comments at the top of the
  MAINTAINERS file"

* tag 'docs-6.5-2' of git://git.lwn.net/linux:
  scripts: kernel-doc: support private / public marking for enums
  Documentation: KVM: SEV: add a missing backtick
  Documentation: ACPI: fix typo in ssdt-overlays.rst
  Fix documentation of panic_on_warn
  docs: remove the tips on how to submit patches from MAINTAINERS
  docs: fix typo in zh_TW and zh_CN translation
 2023-07-06 22:15:38 -07:00
Xueshi Hu
c398488dab docs: fix typo in zh_TW and zh_CN translation 
In zh_TW and zh_CN translation, "http://lwn.net/Articles" is incorrectly
written as "http://lwn.net/Articles".

This patch is generated by the following script:

rg -l "lwn.net/Articles" |
	xargs sed -i  's/lwn.net\/articles/lwn.net\/Articles/g'

Signed-off-by: Xueshi Hu <xueshi.hu@smartx.com>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Message-ID: <mr4mjneo2eghtpm2z6envih3kzjdjpptqcot2fm2wp5crljxag@oianggqjllbl>
 2023-07-03 08:33:42 -06:00
Linus Torvalds
e5476f57b3 gpio updates for v6.5 
Core GPIO library:
 - remove unused symbols
 - don't spam the kernel log with messages about hogs
 - remove old sysfs API cruft
 - improve handling of GPIO masks
 
 New drivers
 - add a driver for the BlueField-3 GPIO controller
 - add GPIO support for the TPS65219 PMIC
 
 Driver improvements:
 - extend the gpio-aggregator driver to support ramp-up/ramp-down delay
 - remove unnecessary CONFIG_OF guards from gpio-aggregator
 - readability improvements in gpio-tangier
 - switch i2c drivers back to using probe() now that it's been converted in
   the i2c subsystem to not taking the id parameter
 - remove unused inclusions of of_gpio.h in several drivers
 - make pm ops static in gpio-davinci and fix a comment
 - use more devres in drivers to shrink and simplify the code
 - add missing include in gpio-sa1100
 - add HAS_IOPORT KConfig dependency where needed
 - add permissions checks before accessing pins in gpio-tegra186
 - convert the gpio-zynq driver to using immutable irqchips
 - preserve output settings set by the bootloader in gpio-mpc8xxx
 
 Selftests:
 - tweak the variable naming in script tests
 
 Device tree updates:
 - convert gpio-mmio and gpio-stmpe to YAML
 - add parsing of GPIO hogs to gpio-vf610
 - add bindings for the Cirrus EP93xx GPIO controller
 - add gpio-line-names property to the gpio-pca9570 bindings
 - extend the binding for x-powers,axp209 with another block
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Merge tag 'gpio-updates-for-v6.5' of git://git.kernel.org/pub/scm/linux/kernel/git/brgl/linux

Pull gpio updates from Bartosz Golaszewski:
 "We have two new drivers, some improvements to the core code, lots of
  different updates to existing GPIO drivers and some dt-bindings on
  top.

  There's nothing controversial in here and almost everything has been
  in next for more than a week (95% a lot longer than this). The only
  thing that has spent less time in next is a new driver so no risk of
  regressions.

  The single merge pulls in changes that remove all usage of global GPIO
  numbers from arch/arm/mach-omap.

  Core GPIO library:
   - remove unused symbols
   - don't spam the kernel log with messages about hogs
   - remove old sysfs API cruft
   - improve handling of GPIO masks

  New drivers:
   - add a driver for the BlueField-3 GPIO controller
   - add GPIO support for the TPS65219 PMIC

  Driver improvements:
   - extend the gpio-aggregator driver to support ramp-up/ramp-down
     delay
   - remove unnecessary CONFIG_OF guards from gpio-aggregator
   - readability improvements in gpio-tangier
   - switch i2c drivers back to using probe() now that it's been
     converted in the i2c subsystem to not taking the id parameter
   - remove unused inclusions of of_gpio.h in several drivers
   - make pm ops static in gpio-davinci and fix a comment
   - use more devres in drivers to shrink and simplify the code
   - add missing include in gpio-sa1100
   - add HAS_IOPORT KConfig dependency where needed
   - add permissions checks before accessing pins in gpio-tegra186
   - convert the gpio-zynq driver to using immutable irqchips
   - preserve output settings set by the bootloader in gpio-mpc8xxx

  Selftests:
   - tweak the variable naming in script tests

  Device tree updates:
   - convert gpio-mmio and gpio-stmpe to YAML
   - add parsing of GPIO hogs to gpio-vf610
   - add bindings for the Cirrus EP93xx GPIO controller
   - add gpio-line-names property to the gpio-pca9570 bindings
   - extend the binding for x-powers,axp209 with another block"

* tag 'gpio-updates-for-v6.5' of git://git.kernel.org/pub/scm/linux/kernel/git/brgl/linux: (58 commits)
  of: unittest: drop assertions for GPIO hog messages
  gpiolib: Drop unused domain_ops memeber of GPIO IRQ chip
  gpio: synq: remove unused zynq_gpio_irq_reqres/zynq_gpio_irq_relres
  dt-bindings: gpio: gpio-vf610: Add parsing of hogs
  gpio: lpc18xx: Remove unused of_gpio.h inclusion
  gpio: xra1403: Remove unused of_gpio.h inclusion
  gpio: mpc8xxx: Remove unused of_gpio.h inclusion
  dt-bindings: gpio: Add Cirrus EP93xx
  gpio: mpc8xxx: latch GPIOs state on module load when configured as output
  selftests: gpio: gpio-sim: Use same variable name for sysfs pathname
  gpio: mlxbf3: Add gpio driver support
  gpio: delay: Remove duplicative functionality
  gpio: aggregator: Set up a parser of delay line parameters
  gpio: aggregator: Support delay for setting up individual GPIOs
  gpio: aggregator: Remove CONFIG_OF and of_match_ptr() protections
  dt-bindings: gpio: pca9570: add gpio-line-names property
  gpiolib: remove unused gpio_cansleep()
  gpio: tps65219: add GPIO support for TPS65219 PMIC
  gpio: zynq: fix zynqmp_gpio not an immutable chip warning
  gpio: davinci: make davinci_gpio_dev_pm_ops static
  ...
 2023-06-29 10:11:10 -07:00
Linus Torvalds
6e17c6de3d - Yosry Ahmed brought back some cgroup v1 stats in OOM logs. 
- Yosry has also eliminated cgroup's atomic rstat flushing.
 
 - Nhat Pham adds the new cachestat() syscall.  It provides userspace
   with the ability to query pagecache status - a similar concept to
   mincore() but more powerful and with improved usability.
 
 - Mel Gorman provides more optimizations for compaction, reducing the
   prevalence of page rescanning.
 
 - Lorenzo Stoakes has done some maintanance work on the get_user_pages()
   interface.
 
 - Liam Howlett continues with cleanups and maintenance work to the maple
   tree code.  Peng Zhang also does some work on maple tree.
 
 - Johannes Weiner has done some cleanup work on the compaction code.
 
 - David Hildenbrand has contributed additional selftests for
   get_user_pages().
 
 - Thomas Gleixner has contributed some maintenance and optimization work
   for the vmalloc code.
 
 - Baolin Wang has provided some compaction cleanups,
 
 - SeongJae Park continues maintenance work on the DAMON code.
 
 - Huang Ying has done some maintenance on the swap code's usage of
   device refcounting.
 
 - Christoph Hellwig has some cleanups for the filemap/directio code.
 
 - Ryan Roberts provides two patch series which yield some
   rationalization of the kernel's access to pte entries - use the provided
   APIs rather than open-coding accesses.
 
 - Lorenzo Stoakes has some fixes to the interaction between pagecache
   and directio access to file mappings.
 
 - John Hubbard has a series of fixes to the MM selftesting code.
 
 - ZhangPeng continues the folio conversion campaign.
 
 - Hugh Dickins has been working on the pagetable handling code, mainly
   with a view to reducing the load on the mmap_lock.
 
 - Catalin Marinas has reduced the arm64 kmalloc() minimum alignment from
   128 to 8.
 
 - Domenico Cerasuolo has improved the zswap reclaim mechanism by
   reorganizing the LRU management.
 
 - Matthew Wilcox provides some fixups to make gfs2 work better with the
   buffer_head code.
 
 - Vishal Moola also has done some folio conversion work.
 
 - Matthew Wilcox has removed the remnants of the pagevec code - their
   functionality is migrated over to struct folio_batch.
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Merge tag 'mm-stable-2023-06-24-19-15' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm

Pull mm updates from Andrew Morton:

 - Yosry Ahmed brought back some cgroup v1 stats in OOM logs

 - Yosry has also eliminated cgroup's atomic rstat flushing

 - Nhat Pham adds the new cachestat() syscall. It provides userspace
   with the ability to query pagecache status - a similar concept to
   mincore() but more powerful and with improved usability

 - Mel Gorman provides more optimizations for compaction, reducing the
   prevalence of page rescanning

 - Lorenzo Stoakes has done some maintanance work on the
   get_user_pages() interface

 - Liam Howlett continues with cleanups and maintenance work to the
   maple tree code. Peng Zhang also does some work on maple tree

 - Johannes Weiner has done some cleanup work on the compaction code

 - David Hildenbrand has contributed additional selftests for
   get_user_pages()

 - Thomas Gleixner has contributed some maintenance and optimization
   work for the vmalloc code

 - Baolin Wang has provided some compaction cleanups,

 - SeongJae Park continues maintenance work on the DAMON code

 - Huang Ying has done some maintenance on the swap code's usage of
   device refcounting

 - Christoph Hellwig has some cleanups for the filemap/directio code

 - Ryan Roberts provides two patch series which yield some
   rationalization of the kernel's access to pte entries - use the
   provided APIs rather than open-coding accesses

 - Lorenzo Stoakes has some fixes to the interaction between pagecache
   and directio access to file mappings

 - John Hubbard has a series of fixes to the MM selftesting code

 - ZhangPeng continues the folio conversion campaign

 - Hugh Dickins has been working on the pagetable handling code, mainly
   with a view to reducing the load on the mmap_lock

 - Catalin Marinas has reduced the arm64 kmalloc() minimum alignment
   from 128 to 8

 - Domenico Cerasuolo has improved the zswap reclaim mechanism by
   reorganizing the LRU management

 - Matthew Wilcox provides some fixups to make gfs2 work better with the
   buffer_head code

 - Vishal Moola also has done some folio conversion work

 - Matthew Wilcox has removed the remnants of the pagevec code - their
   functionality is migrated over to struct folio_batch

* tag 'mm-stable-2023-06-24-19-15' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm: (380 commits)
  mm/hugetlb: remove hugetlb_set_page_subpool()
  mm: nommu: correct the range of mmap_sem_read_lock in task_mem()
  hugetlb: revert use of page_cache_next_miss()
  Revert "page cache: fix page_cache_next/prev_miss off by one"
  mm/vmscan: fix root proactive reclaim unthrottling unbalanced node
  mm: memcg: rename and document global_reclaim()
  mm: kill [add|del]_page_to_lru_list()
  mm: compaction: convert to use a folio in isolate_migratepages_block()
  mm: zswap: fix double invalidate with exclusive loads
  mm: remove unnecessary pagevec includes
  mm: remove references to pagevec
  mm: rename invalidate_mapping_pagevec to mapping_try_invalidate
  mm: remove struct pagevec
  net: convert sunrpc from pagevec to folio_batch
  i915: convert i915_gpu_error to use a folio_batch
  pagevec: rename fbatch_count()
  mm: remove check_move_unevictable_pages()
  drm: convert drm_gem_put_pages() to use a folio_batch
  i915: convert shmem_sg_free_table() to use a folio_batch
  scatterlist: add sg_set_folio()
  ...
 2023-06-28 10:28:11 -07:00
Linus Torvalds
6aeadf7896 Move the arm64 architecture documentation under Documentation/arch/. This 
brings some order to the documentation directory, declutters the top-level
 directory, and makes the documentation organization more closely match that
 of the source.
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Merge tag 'docs-arm64-move' of git://git.lwn.net/linux

Pull arm64 documentation move from Jonathan Corbet:
 "Move the arm64 architecture documentation under Documentation/arch/.

  This brings some order to the documentation directory, declutters the
  top-level directory, and makes the documentation organization more
  closely match that of the source"

* tag 'docs-arm64-move' of git://git.lwn.net/linux:
  perf arm-spe: Fix a dangling Documentation/arm64 reference
  mm: Fix a dangling Documentation/arm64 reference
  arm64: Fix dangling references to Documentation/arm64
  dt-bindings: fix dangling Documentation/arm64 reference
  docs: arm64: Move arm64 documentation under Documentation/arch/
 2023-06-27 21:52:15 -07:00
Linus Torvalds
04fc8904d5 Move the Arm architecture documentation under Documentation/arch/. This 
brings some order to the documentation directory, declutters the top-level
 directory, and makes the documentation organization more closely match that
 of the source.
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Merge tag 'docs-arm-move' of git://git.lwn.net/linux

Pull arm documentation move from Jonathan Corbet:
 "Move the Arm architecture documentation under Documentation/arch/.

  This brings some order to the documentation directory, declutters the
  top-level directory, and makes the documentation organization more
  closely match that of the source"

* tag 'docs-arm-move' of git://git.lwn.net/linux:
  dt-bindings: Update Documentation/arm references
  docs: update some straggling Documentation/arm references
  crypto: update some Arm documentation references
  mips: update a reference to a moved Arm Document
  arm64: Update Documentation/arm references
  arm: update in-source documentation references
  arm: docs: Move Arm documentation to Documentation/arch/
 2023-06-27 11:58:16 -07:00
Jonathan Corbet
e4624435f3 docs: arm64: Move arm64 documentation under Documentation/arch/ 
Architecture-specific documentation is being moved into Documentation/arch/
as a way of cleaning up the top-level documentation directory and making
the docs hierarchy more closely match the source hierarchy.  Move
Documentation/arm64 into arch/ (along with the Chinese equvalent
translations) and fix up documentation references.

Cc: Will Deacon <will@kernel.org>
Cc: Alex Shi <alexs@kernel.org>
Cc: Hu Haowen <src.res@email.cn>
Cc: Paolo Bonzini <pbonzini@redhat.com>
Acked-by: Catalin Marinas <catalin.marinas@arm.com>
Reviewed-by: Yantengsi <siyanteng@loongson.cn>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
 2023-06-21 08:51:51 -06:00
Andy Shevchenko
7d0b80647f gpiolib: remove unused gpio_cansleep() 
There is not a single user in the entire kernel of this deprecated API,
kill it for good.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Reviewed-by: Yanteng Si <siyanteng@loongson.cn>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
 2023-06-13 16:49:23 +02:00
Jonathan Corbet
e790a4ce52 arm: docs: Move Arm documentation to Documentation/arch/ 
Architecture-specific documentation is being moved into Documentation/arch/
as a way of cleaning up the top-level documentation directory and making
the docs hierarchy more closely match the source hierarchy.  Move
Documentation/arm into arch/ (along with the Chinese equvalent
translations).

Cc: Maxime Coquelin <mcoquelin.stm32@gmail.com>
Cc: Chen-Yu Tsai <wens@csie.org>
Cc: Jernej Skrabec <jernej.skrabec@gmail.com>
Cc: Samuel Holland <samuel@sholland.org>
Cc: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Cc: Alim Akhtar <alim.akhtar@samsung.com>
Cc: Alex Shi <alexs@kernel.org>
Cc: linux-doc@vger.kernel.org
Cc: linux-arm-kernel@lists.infradead.org
Cc: linux-arch@vger.kernel.org
Acked-by: Alexandre TORGUE <alexandre.torgue@foss.st.com>
Reviewed-by: Yanteng Si <siyanteng@loongson.cn>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
 2023-06-12 06:33:40 -06:00
Matthew Wilcox (Oracle)
4e096ae180 mm: convert migrate_pages() to work on folios 
Almost all of the callers & implementors of migrate_pages() were already
converted to use folios.  compaction_alloc() & compaction_free() are
trivial to convert a part of this patch and not worth splitting out.

Link: https://lkml.kernel.org/r/20230513001101.276972-1-willy@infradead.org
Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Reviewed-by: "Huang, Ying" <ying.huang@intel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
 2023-06-09 16:25:27 -07:00
Baruch Siach
b0b4a63f38 docs: zh_CN/devicetree: sync usage-model fix 
Sync compatibly string fix from the English document.

Signed-off-by: Baruch Siach <baruch@tkos.co.il>
Reviewed-by: Yanteng Si <siyanteng@loongson.cn>
Link: https://lore.kernel.org/r/b39560250cb58f8cdcfe95791ce5af7455c6e8e3.1682333574.git.baruch@tkos.co.il
Signed-off-by: Rob Herring <robh@kernel.org>
 2023-06-08 07:31:59 -06:00
Andy Shevchenko
9df8c63c2b gpiolib: Kill unused GPIOF_OPEN_* 
There is no use of the GPIOF_OPEN_* in the kernel. Kill it for good.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
 2023-06-01 09:52:39 +02:00
Andy Shevchenko
2f804aca48 gpiolib: Kill unused GPIOF_EXPORT and Co 
There is no use of the GPIOF_EXPORT in the kernel. Kill it for good.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
 2023-06-01 09:52:31 +02:00
Linus Torvalds
647681bfa6 A handful of late-arriving documentation fixes, plus one Spanish 
translation that has been ready for some time but got applied late.
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Merge tag 'docs-6.4-2' of git://git.lwn.net/linux

Pull more documentation updates from Jonathan Corbet:
 "A handful of late-arriving documentation fixes, plus one Spanish
  translation that has been ready for some time but got applied late"

* tag 'docs-6.4-2' of git://git.lwn.net/linux:
  docs/sp_SP: Add translation of process/adding-syscalls
  CREDITS: Update email address for Mat Martineau
  Documentation: update kernel stack for x86_64
  docs: Remove unnecessary unicode character
  docs: fix "Reviewd" typo
  Documentation: timers: hrtimers: Make hybrid union historical
  docs/admin-guide/mm/ksm.rst fix intraface -> interface typo
  doc:it_IT: fix some typos
 2023-05-05 13:16:42 -07:00
Tao Liu
4a2d80ad06 docs: Remove unnecessary unicode character 
There is a non-printable unicode char '\u202a' or "0xe2 0x80 0xaa" in hex
in the translation doc. It is unnecessary and should be removed for better
text formatting when using editors like vi.

Signed-off-by: Tao Liu <ltao@redhat.com>
Reviewed-by: Yanteng Si <siyanteng@loongson.cn>
Link: https://lore.kernel.org/r/20230426021452.9745-1-ltao@redhat.com
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
 2023-05-02 10:55:21 -06:00
Linus Torvalds
33afd4b763 Mainly singleton patches all over the place. Series of note are: 
- updates to scripts/gdb from Glenn Washburn
 
 - kexec cleanups from Bjorn Helgaas
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Merge tag 'mm-nonmm-stable-2023-04-27-16-01' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm

Pull non-MM updates from Andrew Morton:
 "Mainly singleton patches all over the place.

  Series of note are:

   - updates to scripts/gdb from Glenn Washburn

   - kexec cleanups from Bjorn Helgaas"

* tag 'mm-nonmm-stable-2023-04-27-16-01' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm: (50 commits)
  mailmap: add entries for Paul Mackerras
  libgcc: add forward declarations for generic library routines
  mailmap: add entry for Oleksandr
  ocfs2: reduce ioctl stack usage
  fs/proc: add Kthread flag to /proc/$pid/status
  ia64: fix an addr to taddr in huge_pte_offset()
  checkpatch: introduce proper bindings license check
  epoll: rename global epmutex
  scripts/gdb: add GDB convenience functions $lx_dentry_name() and $lx_i_dentry()
  scripts/gdb: create linux/vfs.py for VFS related GDB helpers
  uapi/linux/const.h: prefer ISO-friendly __typeof__
  delayacct: track delays from IRQ/SOFTIRQ
  scripts/gdb: timerlist: convert int chunks to str
  scripts/gdb: print interrupts
  scripts/gdb: raise error with reduced debugging information
  scripts/gdb: add a Radix Tree Parser
  lib/rbtree: use '+' instead of '|' for setting color.
  proc/stat: remove arch_idle_time()
  checkpatch: check for misuse of the link tags
  checkpatch: allow Closes tags with links
  ...
 2023-04-27 19:57:00 -07:00
Linus Torvalds
513f17f8d6 sh updates for v6.4 
- sh: Use generic GCC library routines
 - sh: sq: Use the bitmap API when applicable
 - sh: sq: Fix incorrect element size for allocating bitmap buffer
 - sh: pci: Remove unused variable in SH-7786 PCI Express code
 - sh: mcount.S: fix build error when PRINTK is not enabled
 - sh: remove sh5/sh64 last fragments
 - sh: math-emu: fix macro redefined warning
 - sh: init: use OF_EARLY_FLATTREE for early init
 - sh: nmi_debug: fix return value of __setup handler
 - sh: SH2007: drop the bad URL info
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Merge tag 'sh-for-v6.4-tag1' of git://git.kernel.org/pub/scm/linux/kernel/git/glaubitz/sh-linux

Pull sh updates from John Paul Adrian Glaubitz:
 "This is a bit larger than my previous one and mainly consists of
  clean-up work in the arch/sh directory by Geert Uytterhoeven and Randy
  Dunlap.

  Additionally, this fixes a bug in the Storage Queue code that was
  discovered while I was reviewing a patch to switch the code to the
  bitmap API by Christophe Jaillet.

  So this contains both a fix for the original bug in the Storage Queue
  code that can be backported later as well as the Christophe's patch to
  swich the code to the bitmap API.

  Summary:

   - Use generic GCC library routines

   - sq: Use the bitmap API when applicable

   - sq: Fix incorrect element size for allocating bitmap buffer

   - pci: Remove unused variable in SH-7786 PCI Express code

   - mcount.S: fix build error when PRINTK is not enabled

   - remove sh5/sh64 last fragments

   - math-emu: fix macro redefined warning

   - init: use OF_EARLY_FLATTREE for early init

   - nmi_debug: fix return value of __setup handler

   - SH2007: drop the bad URL info"

* tag 'sh-for-v6.4-tag1' of git://git.kernel.org/pub/scm/linux/kernel/git/glaubitz/sh-linux:
  sh: Replace <uapi/asm/types.h> by <asm-generic/int-ll64.h>
  sh: Use generic GCC library routines
  sh: sq: Use the bitmap API when applicable
  sh: sq: Fix incorrect element size for allocating bitmap buffer
  sh: pci: Remove unused variable in SH-7786 PCI Express code
  sh: mcount.S: fix build error when PRINTK is not enabled
  sh: remove sh5/sh64 last fragments
  sh: math-emu: fix macro redefined warning
  sh: init: use OF_EARLY_FLATTREE for early init
  sh: nmi_debug: fix return value of __setup handler
  sh: SH2007: drop the bad URL info
 2023-04-27 17:41:23 -07:00
Linus Torvalds
b6a7828502 modules-6.4-rc1 
The summary of the changes for this pull requests is:
 
  * Song Liu's new struct module_memory replacement
  * Nick Alcock's MODULE_LICENSE() removal for non-modules
  * My cleanups and enhancements to reduce the areas where we vmalloc
    module memory for duplicates, and the respective debug code which
    proves the remaining vmalloc pressure comes from userspace.
 
 Most of the changes have been in linux-next for quite some time except
 the minor fixes I made to check if a module was already loaded
 prior to allocating the final module memory with vmalloc and the
 respective debug code it introduces to help clarify the issue. Although
 the functional change is small it is rather safe as it can only *help*
 reduce vmalloc space for duplicates and is confirmed to fix a bootup
 issue with over 400 CPUs with KASAN enabled. I don't expect stable
 kernels to pick up that fix as the cleanups would have also had to have
 been picked up. Folks on larger CPU systems with modules will want to
 just upgrade if vmalloc space has been an issue on bootup.
 
 Given the size of this request, here's some more elaborate details
 on this pull request.
 
 The functional change change in this pull request is the very first
 patch from Song Liu which replaces the struct module_layout with a new
 struct module memory. The old data structure tried to put together all
 types of supported module memory types in one data structure, the new
 one abstracts the differences in memory types in a module to allow each
 one to provide their own set of details. This paves the way in the
 future so we can deal with them in a cleaner way. If you look at changes
 they also provide a nice cleanup of how we handle these different memory
 areas in a module. This change has been in linux-next since before the
 merge window opened for v6.3 so to provide more than a full kernel cycle
 of testing. It's a good thing as quite a bit of fixes have been found
 for it.
 
 Jason Baron then made dynamic debug a first class citizen module user by
 using module notifier callbacks to allocate / remove module specific
 dynamic debug information.
 
 Nick Alcock has done quite a bit of work cross-tree to remove module
 license tags from things which cannot possibly be module at my request
 so to:
 
   a) help him with his longer term tooling goals which require a
      deterministic evaluation if a piece a symbol code could ever be
      part of a module or not. But quite recently it is has been made
      clear that tooling is not the only one that would benefit.
      Disambiguating symbols also helps efforts such as live patching,
      kprobes and BPF, but for other reasons and R&D on this area
      is active with no clear solution in sight.
 
   b) help us inch closer to the now generally accepted long term goal
      of automating all the MODULE_LICENSE() tags from SPDX license tags
 
 In so far as a) is concerned, although module license tags are a no-op
 for non-modules, tools which would want create a mapping of possible
 modules can only rely on the module license tag after the commit
 8b41fc4454 ("kbuild: create modules.builtin without Makefile.modbuiltin
 or tristate.conf").  Nick has been working on this *for years* and
 AFAICT I was the only one to suggest two alternatives to this approach
 for tooling. The complexity in one of my suggested approaches lies in
 that we'd need a possible-obj-m and a could-be-module which would check
 if the object being built is part of any kconfig build which could ever
 lead to it being part of a module, and if so define a new define
 -DPOSSIBLE_MODULE [0]. A more obvious yet theoretical approach I've
 suggested would be to have a tristate in kconfig imply the same new
 -DPOSSIBLE_MODULE as well but that means getting kconfig symbol names
 mapping to modules always, and I don't think that's the case today. I am
 not aware of Nick or anyone exploring either of these options. Quite
 recently Josh Poimboeuf has pointed out that live patching, kprobes and
 BPF would benefit from resolving some part of the disambiguation as
 well but for other reasons. The function granularity KASLR (fgkaslr)
 patches were mentioned but Joe Lawrence has clarified this effort has
 been dropped with no clear solution in sight [1].
 
 In the meantime removing module license tags from code which could never
 be modules is welcomed for both objectives mentioned above. Some
 developers have also welcomed these changes as it has helped clarify
 when a module was never possible and they forgot to clean this up,
 and so you'll see quite a bit of Nick's patches in other pull
 requests for this merge window. I just picked up the stragglers after
 rc3. LWN has good coverage on the motivation behind this work [2] and
 the typical cross-tree issues he ran into along the way. The only
 concrete blocker issue he ran into was that we should not remove the
 MODULE_LICENSE() tags from files which have no SPDX tags yet, even if
 they can never be modules. Nick ended up giving up on his efforts due
 to having to do this vetting and backlash he ran into from folks who
 really did *not understand* the core of the issue nor were providing
 any alternative / guidance. I've gone through his changes and dropped
 the patches which dropped the module license tags where an SPDX
 license tag was missing, it only consisted of 11 drivers.  To see
 if a pull request deals with a file which lacks SPDX tags you
 can just use:
 
   ./scripts/spdxcheck.py -f \
 	$(git diff --name-only commid-id | xargs echo)
 
 You'll see a core module file in this pull request for the above,
 but that's not related to his changes. WE just need to add the SPDX
 license tag for the kernel/module/kmod.c file in the future but
 it demonstrates the effectiveness of the script.
 
 Most of Nick's changes were spread out through different trees,
 and I just picked up the slack after rc3 for the last kernel was out.
 Those changes have been in linux-next for over two weeks.
 
 The cleanups, debug code I added and final fix I added for modules
 were motivated by David Hildenbrand's report of boot failing on
 a systems with over 400 CPUs when KASAN was enabled due to running
 out of virtual memory space. Although the functional change only
 consists of 3 lines in the patch "module: avoid allocation if module is
 already present and ready", proving that this was the best we can
 do on the modules side took quite a bit of effort and new debug code.
 
 The initial cleanups I did on the modules side of things has been
 in linux-next since around rc3 of the last kernel, the actual final
 fix for and debug code however have only been in linux-next for about a
 week or so but I think it is worth getting that code in for this merge
 window as it does help fix / prove / evaluate the issues reported
 with larger number of CPUs. Userspace is not yet fixed as it is taking
 a bit of time for folks to understand the crux of the issue and find a
 proper resolution. Worst come to worst, I have a kludge-of-concept [3]
 of how to make kernel_read*() calls for modules unique / converge them,
 but I'm currently inclined to just see if userspace can fix this
 instead.
 
 [0] https://lore.kernel.org/all/Y/kXDqW+7d71C4wz@bombadil.infradead.org/
 [1] https://lkml.kernel.org/r/025f2151-ce7c-5630-9b90-98742c97ac65@redhat.com
 [2] https://lwn.net/Articles/927569/
 [3] https://lkml.kernel.org/r/20230414052840.1994456-3-mcgrof@kernel.org
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Merge tag 'modules-6.4-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/mcgrof/linux

Pull module updates from Luis Chamberlain:
 "The summary of the changes for this pull requests is:

   - Song Liu's new struct module_memory replacement

   - Nick Alcock's MODULE_LICENSE() removal for non-modules

   - My cleanups and enhancements to reduce the areas where we vmalloc
     module memory for duplicates, and the respective debug code which
     proves the remaining vmalloc pressure comes from userspace.

  Most of the changes have been in linux-next for quite some time except
  the minor fixes I made to check if a module was already loaded prior
  to allocating the final module memory with vmalloc and the respective
  debug code it introduces to help clarify the issue. Although the
  functional change is small it is rather safe as it can only *help*
  reduce vmalloc space for duplicates and is confirmed to fix a bootup
  issue with over 400 CPUs with KASAN enabled. I don't expect stable
  kernels to pick up that fix as the cleanups would have also had to
  have been picked up. Folks on larger CPU systems with modules will
  want to just upgrade if vmalloc space has been an issue on bootup.

  Given the size of this request, here's some more elaborate details:

  The functional change change in this pull request is the very first
  patch from Song Liu which replaces the 'struct module_layout' with a
  new 'struct module_memory'. The old data structure tried to put
  together all types of supported module memory types in one data
  structure, the new one abstracts the differences in memory types in a
  module to allow each one to provide their own set of details. This
  paves the way in the future so we can deal with them in a cleaner way.
  If you look at changes they also provide a nice cleanup of how we
  handle these different memory areas in a module. This change has been
  in linux-next since before the merge window opened for v6.3 so to
  provide more than a full kernel cycle of testing. It's a good thing as
  quite a bit of fixes have been found for it.

  Jason Baron then made dynamic debug a first class citizen module user
  by using module notifier callbacks to allocate / remove module
  specific dynamic debug information.

  Nick Alcock has done quite a bit of work cross-tree to remove module
  license tags from things which cannot possibly be module at my request
  so to:

   a) help him with his longer term tooling goals which require a
      deterministic evaluation if a piece a symbol code could ever be
      part of a module or not. But quite recently it is has been made
      clear that tooling is not the only one that would benefit.
      Disambiguating symbols also helps efforts such as live patching,
      kprobes and BPF, but for other reasons and R&D on this area is
      active with no clear solution in sight.

   b) help us inch closer to the now generally accepted long term goal
      of automating all the MODULE_LICENSE() tags from SPDX license tags

  In so far as a) is concerned, although module license tags are a no-op
  for non-modules, tools which would want create a mapping of possible
  modules can only rely on the module license tag after the commit
  8b41fc4454 ("kbuild: create modules.builtin without
  Makefile.modbuiltin or tristate.conf").

  Nick has been working on this *for years* and AFAICT I was the only
  one to suggest two alternatives to this approach for tooling. The
  complexity in one of my suggested approaches lies in that we'd need a
  possible-obj-m and a could-be-module which would check if the object
  being built is part of any kconfig build which could ever lead to it
  being part of a module, and if so define a new define
  -DPOSSIBLE_MODULE [0].

  A more obvious yet theoretical approach I've suggested would be to
  have a tristate in kconfig imply the same new -DPOSSIBLE_MODULE as
  well but that means getting kconfig symbol names mapping to modules
  always, and I don't think that's the case today. I am not aware of
  Nick or anyone exploring either of these options. Quite recently Josh
  Poimboeuf has pointed out that live patching, kprobes and BPF would
  benefit from resolving some part of the disambiguation as well but for
  other reasons. The function granularity KASLR (fgkaslr) patches were
  mentioned but Joe Lawrence has clarified this effort has been dropped
  with no clear solution in sight [1].

  In the meantime removing module license tags from code which could
  never be modules is welcomed for both objectives mentioned above. Some
  developers have also welcomed these changes as it has helped clarify
  when a module was never possible and they forgot to clean this up, and
  so you'll see quite a bit of Nick's patches in other pull requests for
  this merge window. I just picked up the stragglers after rc3. LWN has
  good coverage on the motivation behind this work [2] and the typical
  cross-tree issues he ran into along the way. The only concrete blocker
  issue he ran into was that we should not remove the MODULE_LICENSE()
  tags from files which have no SPDX tags yet, even if they can never be
  modules. Nick ended up giving up on his efforts due to having to do
  this vetting and backlash he ran into from folks who really did *not
  understand* the core of the issue nor were providing any alternative /
  guidance. I've gone through his changes and dropped the patches which
  dropped the module license tags where an SPDX license tag was missing,
  it only consisted of 11 drivers. To see if a pull request deals with a
  file which lacks SPDX tags you can just use:

    ./scripts/spdxcheck.py -f \
	$(git diff --name-only commid-id | xargs echo)

  You'll see a core module file in this pull request for the above, but
  that's not related to his changes. WE just need to add the SPDX
  license tag for the kernel/module/kmod.c file in the future but it
  demonstrates the effectiveness of the script.

  Most of Nick's changes were spread out through different trees, and I
  just picked up the slack after rc3 for the last kernel was out. Those
  changes have been in linux-next for over two weeks.

  The cleanups, debug code I added and final fix I added for modules
  were motivated by David Hildenbrand's report of boot failing on a
  systems with over 400 CPUs when KASAN was enabled due to running out
  of virtual memory space. Although the functional change only consists
  of 3 lines in the patch "module: avoid allocation if module is already
  present and ready", proving that this was the best we can do on the
  modules side took quite a bit of effort and new debug code.

  The initial cleanups I did on the modules side of things has been in
  linux-next since around rc3 of the last kernel, the actual final fix
  for and debug code however have only been in linux-next for about a
  week or so but I think it is worth getting that code in for this merge
  window as it does help fix / prove / evaluate the issues reported with
  larger number of CPUs. Userspace is not yet fixed as it is taking a
  bit of time for folks to understand the crux of the issue and find a
  proper resolution. Worst come to worst, I have a kludge-of-concept [3]
  of how to make kernel_read*() calls for modules unique / converge
  them, but I'm currently inclined to just see if userspace can fix this
  instead"

Link: https://lore.kernel.org/all/Y/kXDqW+7d71C4wz@bombadil.infradead.org/ [0]
Link: https://lkml.kernel.org/r/025f2151-ce7c-5630-9b90-98742c97ac65@redhat.com [1]
Link: https://lwn.net/Articles/927569/ [2]
Link: https://lkml.kernel.org/r/20230414052840.1994456-3-mcgrof@kernel.org [3]

* tag 'modules-6.4-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/mcgrof/linux: (121 commits)
  module: add debugging auto-load duplicate module support
  module: stats: fix invalid_mod_bytes typo
  module: remove use of uninitialized variable len
  module: fix building stats for 32-bit targets
  module: stats: include uapi/linux/module.h
  module: avoid allocation if module is already present and ready
  module: add debug stats to help identify memory pressure
  module: extract patient module check into helper
  modules/kmod: replace implementation with a semaphore
  Change DEFINE_SEMAPHORE() to take a number argument
  module: fix kmemleak annotations for non init ELF sections
  module: Ignore L0 and rename is_arm_mapping_symbol()
  module: Move is_arm_mapping_symbol() to module_symbol.h
  module: Sync code of is_arm_mapping_symbol()
  scripts/gdb: use mem instead of core_layout to get the module address
  interconnect: remove module-related code
  interconnect: remove MODULE_LICENSE in non-modules
  zswap: remove MODULE_LICENSE in non-modules
  zpool: remove MODULE_LICENSE in non-modules
  x86/mm/dump_pagetables: remove MODULE_LICENSE in non-modules
  ...
 2023-04-27 16:36:55 -07:00
Linus Torvalds
cec24b8b6b Char/Misc drivers for 6.4-rc1 
Here is the "big" set of char/misc and other driver subsystems for
 6.4-rc1.
 
 It's pretty big, but due to the removal of pcmcia drivers, almost breaks
 even for number of lines added vs. removed, a nice change.
 
 Included in here are:
   - removal of unused PCMCIA drivers (finally!)
   - Interconnect driver updates and additions
   - Lots of IIO driver updates and additions
   - MHI driver updates
   - Coresight driver updates
   - NVMEM driver updates, which required some OF updates
   - W1 driver updates and a new maintainer to manage the subsystem
   - FPGA driver updates
   - New driver subsystem, CDX, for AMD systems
   - lots of other small driver updates and additions
 
 All of these have been in linux-next for a while with no reported
 issues.
 
 Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'char-misc-6.4-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc

Pull char/misc drivers updates from Greg KH:
 "Here is the "big" set of char/misc and other driver subsystems for
  6.4-rc1.

  It's pretty big, but due to the removal of pcmcia drivers, almost
  breaks even for number of lines added vs. removed, a nice change.

  Included in here are:

   - removal of unused PCMCIA drivers (finally!)

   - Interconnect driver updates and additions

   - Lots of IIO driver updates and additions

   - MHI driver updates

   - Coresight driver updates

   - NVMEM driver updates, which required some OF updates

   - W1 driver updates and a new maintainer to manage the subsystem

   - FPGA driver updates

   - New driver subsystem, CDX, for AMD systems

   - lots of other small driver updates and additions

  All of these have been in linux-next for a while with no reported
  issues"

* tag 'char-misc-6.4-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc: (196 commits)
  mcb-lpc: Reallocate memory region to avoid memory overlapping
  mcb-pci: Reallocate memory region to avoid memory overlapping
  mcb: Return actual parsed size when reading chameleon table
  kernel/configs: Drop Android config fragments
  virt: acrn: Replace obsolete memalign() with posix_memalign()
  spmi: Add a check for remove callback when removing a SPMI driver
  spmi: fix W=1 kernel-doc warnings
  spmi: mtk-pmif: Drop of_match_ptr for ID table
  spmi: pmic-arb: Convert to platform remove callback returning void
  spmi: mtk-pmif: Convert to platform remove callback returning void
  spmi: hisi-spmi-controller: Convert to platform remove callback returning void
  w1: gpio: remove unnecessary ENOMEM messages
  w1: omap-hdq: remove unnecessary ENOMEM messages
  w1: omap-hdq: add SPDX tag
  w1: omap-hdq: allow compile testing
  w1: matrox: remove unnecessary ENOMEM messages
  w1: matrox: use inline over __inline__
  w1: matrox: switch from asm to linux header
  w1: ds2482: do not use assignment in if condition
  w1: ds2482: drop unnecessary header
  ...
 2023-04-27 12:07:50 -07:00
Linus Torvalds
556eb8b791 Driver core changes for 6.4-rc1 
Here is the large set of driver core changes for 6.4-rc1.
 
 Once again, a busy development cycle, with lots of changes happening in
 the driver core in the quest to be able to move "struct bus" and "struct
 class" into read-only memory, a task now complete with these changes.
 
 This will make the future rust interactions with the driver core more
 "provably correct" as well as providing more obvious lifetime rules for
 all busses and classes in the kernel.
 
 The changes required for this did touch many individual classes and
 busses as many callbacks were changed to take const * parameters
 instead.  All of these changes have been submitted to the various
 subsystem maintainers, giving them plenty of time to review, and most of
 them actually did so.
 
 Other than those changes, included in here are a small set of other
 things:
   - kobject logging improvements
   - cacheinfo improvements and updates
   - obligatory fw_devlink updates and fixes
   - documentation updates
   - device property cleanups and const * changes
   - firwmare loader dependency fixes.
 
 All of these have been in linux-next for a while with no reported
 problems.
 
 Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'driver-core-6.4-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core

Pull driver core updates from Greg KH:
 "Here is the large set of driver core changes for 6.4-rc1.

  Once again, a busy development cycle, with lots of changes happening
  in the driver core in the quest to be able to move "struct bus" and
  "struct class" into read-only memory, a task now complete with these
  changes.

  This will make the future rust interactions with the driver core more
  "provably correct" as well as providing more obvious lifetime rules
  for all busses and classes in the kernel.

  The changes required for this did touch many individual classes and
  busses as many callbacks were changed to take const * parameters
  instead. All of these changes have been submitted to the various
  subsystem maintainers, giving them plenty of time to review, and most
  of them actually did so.

  Other than those changes, included in here are a small set of other
  things:

   - kobject logging improvements

   - cacheinfo improvements and updates

   - obligatory fw_devlink updates and fixes

   - documentation updates

   - device property cleanups and const * changes

   - firwmare loader dependency fixes.

  All of these have been in linux-next for a while with no reported
  problems"

* tag 'driver-core-6.4-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core: (120 commits)
  device property: make device_property functions take const device *
  driver core: update comments in device_rename()
  driver core: Don't require dynamic_debug for initcall_debug probe timing
  firmware_loader: rework crypto dependencies
  firmware_loader: Strip off \n from customized path
  zram: fix up permission for the hot_add sysfs file
  cacheinfo: Add use_arch[|_cache]_info field/function
  arch_topology: Remove early cacheinfo error message if -ENOENT
  cacheinfo: Check cache properties are present in DT
  cacheinfo: Check sib_leaf in cache_leaves_are_shared()
  cacheinfo: Allow early level detection when DT/ACPI info is missing/broken
  cacheinfo: Add arm64 early level initializer implementation
  cacheinfo: Add arch specific early level initializer
  tty: make tty_class a static const structure
  driver core: class: remove struct class_interface * from callbacks
  driver core: class: mark the struct class in struct class_interface constant
  driver core: class: make class_register() take a const *
  driver core: class: mark class_release() as taking a const *
  driver core: remove incorrect comment for device_create*
  MIPS: vpe-cmp: remove module owner pointer from struct class usage.
  ...
 2023-04-27 11:53:57 -07:00
Linus Torvalds
2c96606a0f gpio updates for v6.4-rc1 
New drivers:
 - add a driver for the Loongson GPIO controller
 - add a driver for the fxl6408 I2C GPIO expander
 - add a GPIO module containing code common for Intel Elkhart Lake and
   Merrifield platforms
 - add a driver for the Intel Elkhart Lake platform reusing the code from
   the intel tangier library
 
 GPIOLIB core:
 - GPIO ACPI improvements
 - simplify gpiochip_add_data_with_keys() fwnode handling
 - cleanup header inclusions (remove unneeded ones, order the rest
   alphabetically)
 - remove duplicate code (reuse krealloc() instead of open-coding it, drop
   a duplicated check in gpiod_find_and_request())
 - reshuffle the code to remove unnecessary forward declarations
 - coding style cleanups and improvements
 - add a helper for accessing device fwnodes
 - small updates in docs
 
 Driver improvements:
 - convert all remaining GPIO irqchip drivers to using immutable irqchips
 - drop unnecessary of_match_ptr() macro expansions
 - shrink the code in gpio-merrifield significantly by reusing the code from
   gpio-tangier + minor tweaks to the driver code
 - remove MODULE_LICENSE() from drivers that can only be built-in
 - add device-tree support to gpio-loongson1
 - use new regmap features in gpio-104-dio-48e and gpio-pcie-idio-24
 - minor tweaks and fixes to gpio-xra1403, gpio-sim, gpio-tegra194, gpio-omap,
   gpio-aspeed, gpio-raspberrypi-exp
 - shrink code in gpio-ich and gpio-pxa
 - Kconfig tweak for gpio-pmic-eic-sprd
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Merge tag 'gpio-updates-for-v6.4' of git://git.kernel.org/pub/scm/linux/kernel/git/brgl/linux

Pull gpio updates from Bartosz Golaszewski:
 "We have some new drivers, significant refactoring of existing intel
  platforms, lots of improvements all around, mass conversion to using
  immutable irqchips by drivers that had not been converted individually
  yet and some changes in the core library code.

  Summary:

  New drivers:
   - add a driver for the Loongson GPIO controller
   - add a driver for the fxl6408 I2C GPIO expander
   - add a GPIO module containing code common for Intel Elkhart Lake and
     Merrifield platforms
   - add a driver for the Intel Elkhart Lake platform reusing the code
     from the intel tangier library

  GPIOLIB core:
   - GPIO ACPI improvements
   - simplify gpiochip_add_data_with_keys() fwnode handling
   - cleanup header inclusions (remove unneeded ones, order the rest
     alphabetically)
   - remove duplicate code (reuse krealloc() instead of open-coding it,
     drop a duplicated check in gpiod_find_and_request())
   - reshuffle the code to remove unnecessary forward declarations
   - coding style cleanups and improvements
   - add a helper for accessing device fwnodes
   - small updates in docs

  Driver improvements:
   - convert all remaining GPIO irqchip drivers to using immutable
     irqchips
   - drop unnecessary of_match_ptr() macro expansions
   - shrink the code in gpio-merrifield significantly by reusing the
     code from gpio-tangier + minor tweaks to the driver code
   - remove MODULE_LICENSE() from drivers that can only be built-in
   - add device-tree support to gpio-loongson1
   - use new regmap features in gpio-104-dio-48e and gpio-pcie-idio-24
   - minor tweaks and fixes to gpio-xra1403, gpio-sim, gpio-tegra194,
     gpio-omap, gpio-aspeed, gpio-raspberrypi-exp
   - shrink code in gpio-ich and gpio-pxa
   - Kconfig tweak for gpio-pmic-eic-sprd"

* tag 'gpio-updates-for-v6.4' of git://git.kernel.org/pub/scm/linux/kernel/git/brgl/linux: (99 commits)
  gpio: gpiolib: Simplify gpiochip_add_data_with_key() fwnode
  gpiolib: Add gpiochip_set_data() helper
  gpiolib: Move gpiochip_get_data() higher in the code
  gpiolib: Check array_info for NULL only once in gpiod_get_array()
  gpiolib: Replace open coded krealloc()
  gpiolib: acpi: Add a ignore wakeup quirk for Clevo NL5xNU
  gpiolib: acpi: Move ACPI device NULL check to acpi_get_driver_gpio_data()
  gpiolib: acpi: use the fwnode in acpi_gpiochip_find()
  gpio: mm-lantiq: Fix typo in the newly added header filename
  sh: mach-x3proto: Add missing #include <linux/gpio/driver.h>
  powerpc/40x: Add missing select OF_GPIO_MM_GPIOCHIP
  gpio: xlp: Convert to immutable irq_chip
  gpio: xilinx: Convert to immutable irq_chip
  gpio: xgs-iproc: Convert to immutable irq_chip
  gpio: visconti: Convert to immutable irq_chip
  gpio: tqmx86: Convert to immutable irq_chip
  gpio: thunderx: Convert to immutable irq_chip
  gpio: stmpe: Convert to immutable irq_chip
  gpio: siox: Convert to immutable irq_chip
  gpio: rda: Convert to immutable irq_chip
  ...
 2023-04-25 17:18:18 -07:00
Linus Torvalds
c23f28975a Commit volume in documentation is relatively low this time, but there is 
still a fair amount going on, including:
 
 - Reorganizing the architecture-specific documentation under
   Documentation/arch.  This makes the structure match the source directory
   and helps to clean up the mess that is the top-level Documentation
   directory a bit.  This work creates the new directory and moves x86 and
   most of the less-active architectures there.  The current plan is to move
   the rest of the architectures in 6.5, with the patches going through the
   appropriate subsystem trees.
 
 - Some more Spanish translations and maintenance of the Italian
   translation.
 
 - A new "Kernel contribution maturity model" document from Ted.
 
 - A new tutorial on quickly building a trimmed kernel from Thorsten.
 
 Plus the usual set of updates and fixes.
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Merge tag 'docs-6.4' of git://git.lwn.net/linux

Pull documentation updates from Jonathan Corbet:
 "Commit volume in documentation is relatively low this time, but there
  is still a fair amount going on, including:

   - Reorganize the architecture-specific documentation under
     Documentation/arch

     This makes the structure match the source directory and helps to
     clean up the mess that is the top-level Documentation directory a
     bit. This work creates the new directory and moves x86 and most of
     the less-active architectures there.

     The current plan is to move the rest of the architectures in 6.5,
     with the patches going through the appropriate subsystem trees.

   - Some more Spanish translations and maintenance of the Italian
     translation

   - A new "Kernel contribution maturity model" document from Ted

   - A new tutorial on quickly building a trimmed kernel from Thorsten

  Plus the usual set of updates and fixes"

* tag 'docs-6.4' of git://git.lwn.net/linux: (47 commits)
  media: Adjust column width for pdfdocs
  media: Fix building pdfdocs
  docs: clk: add documentation to log which clocks have been disabled
  docs: trace: Fix typo in ftrace.rst
  Documentation/process: always CC responsible lists
  docs: kmemleak: adjust to config renaming
  ELF: document some de-facto PT_* ABI quirks
  Documentation: arm: remove stih415/stih416 related entries
  docs: turn off "smart quotes" in the HTML build
  Documentation: firmware: Clarify firmware path usage
  docs/mm: Physical Memory: Fix grammar
  Documentation: Add document for false sharing
  dma-api-howto: typo fix
  docs: move m68k architecture documentation under Documentation/arch/
  docs: move parisc documentation under Documentation/arch/
  docs: move ia64 architecture docs under Documentation/arch/
  docs: Move arc architecture docs under Documentation/arch/
  docs: move nios2 documentation under Documentation/arch/
  docs: move openrisc documentation under Documentation/arch/
  docs: move superh documentation under Documentation/arch/
  ...
 2023-04-24 12:35:49 -07:00
Jonathan Corbet
92b3de3f8a docs: move parisc documentation under Documentation/arch/ 
Architecture-specific documentation is being moved into Documentation/arch/
as a way of cleaning up the top-level documentation directory and making
the docs hierarchy more closely match the source hierarchy.  Move
Documentation/parisc into arch/ and fix all in-tree references.

Cc: "James E.J. Bottomley" <James.Bottomley@HansenPartnership.com>
Cc: Helge Deller <deller@gmx.de>
Cc: Alex Shi <alexs@kernel.org>
Reviewed-by: Yanteng Si <siyanteng@loongson.cn>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
 2023-04-10 16:45:52 -06:00
Greg Kroah-Hartman
5790d407da Merge 6.3-rc6 into char-misc-next 
We need it here to apply other char/misc driver changes to.

Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
 2023-04-10 08:49:26 +02:00
Wang Yong
eca7de7cdc delayacct: improve the average delay precision of getdelay tool to microsecond 
Improve the average delay precision of getdelay tool to microsecond.  When
using the getdelay tool, it is sometimes found that the average delay
except CPU is not 0, but display is 0, because the precison is too low. 
For example, see delay average of SWAP below when using ZRAM.

print delayacct stats ON
PID	32915
CPU             count     real total  virtual total    delay total  delay average
               339202     2793871936     9233585504        7951112          0.000ms
IO              count    delay total  delay average
                   41      419296904             10ms
SWAP            count    delay total  delay average
               242589     1045792384              0ms

This wrong display is misleading, so improve the millisecond precision of
the average delay to microsecond just like CPU.  Then user would get more
accurate information of delay time.

Link: https://lkml.kernel.org/r/202302131408087983857@zte.com.cn
Signed-off-by: Wang Yong <wang.yong12@zte.com.cn>
Reviewed-by: Yang Yang <yang.yang29@zte.com.cn>
Cc: David Hildenbrand <david@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
 2023-04-08 13:45:36 -07:00
Greg Kroah-Hartman
cd8fe5b6db Merge 6.3-rc5 into driver-core-next 
We need the fixes in here for testing, as well as the driver core
changes for documentation updates to build on.

Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
 2023-04-03 09:33:30 +02:00
Linus Torvalds
a10ca0950a Driver core fixes for 6.3-rc5 
Here are 3 small changes for 6.3-rc5 semi-related to driver core stuff:
   - documentation update where we move the security_bugs file to a more
     relevant location.
   - mdt/spi-nor debugfs memory leak fix that's been floating around for
     a long time and acked by the maintainer
   - cacheinfo bugfix for a regression in 6.3-rc1
 
 All have been in linux-next with no reported problems.
 
 Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'driver-core-6.3-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core

Pull driver core fixes from Greg KH:
 "Here are three small changes for 6.3-rc5 semi-related to driver core
  stuff:

   - documentation update where we move the security_bugs file to a more
     relevant location.

   - mdt/spi-nor debugfs memory leak fix that's been floating around for
     a long time and acked by the maintainer

   - cacheinfo bugfix for a regression in 6.3-rc1

  All have been in linux-next with no reported problems"

* tag 'driver-core-6.3-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core:
  cacheinfo: Fix LLC is not exported through sysfs
  Documentation/security-bugs: move from admin-guide/ to process/
  mtd: spi-nor: fix memory leak when using debugfs_lookup()
 2023-04-02 10:10:16 -07:00
Jonathan Corbet
0e9ab8e4d4 docs: move openrisc documentation under Documentation/arch/ 
Architecture-specific documentation is being moved into Documentation/arch/
as a way of cleaning up the top-level documentation directory and making
the docs hierarchy more closely match the source hierarchy.  Move
Documentation/openrisc into arch/ and fix all in-tree references.

Cc: Jonas Bonn <jonas@southpole.se>
Cc: Stefan Kristiansson <stefan.kristiansson@saunalahti.fi>
Cc: Stafford Horne <shorne@gmail.com>
Acked-by: Alex Shi <alexs@kernel.org>
Reviewed-by: Yanteng Si <siyanteng@loongson.cn>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
 2023-03-30 13:00:35 -06:00
Jonathan Corbet
0c25e10091 docs: zh_CN: create the architecture-specific top-level directory 
This mirrors commit 4f1bb0386d ("docs: create a top-level arch/
directory"), creating a top-level directory to hold architecture-specific
documentation.

Acked-by: Alex Shi <alexs@kernel.org>
Reviewed-by: Yanteng Si <siyanteng@loongson.cn>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
 2023-03-30 12:59:54 -06:00
Bagas Sanjaya
3edf091d5c Documentation: core-api: update kernel-doc reference to kmod.c 
Commit d6f819908f8aac ("module: fold usermode helper kmod into modules
directory") moves kmod helper implementation (kmod.c) to kernel/module/
directory but forgets to update its reference on kernel api doc, hence:

WARNING: kernel-doc './scripts/kernel-doc -rst -enable-lineno -sphinx-version 2.4.4 -export ./kernel/kmod.c' failed with return code 2

Update the reference.

Fixes: d6f819908f8aac ("module: fold usermode helper kmod into modules directory")
Reported-by: Stephen Rothwell <sfr@canb.auug.org.au>
Link: https://lore.kernel.org/linux-next/20230324154413.19cc78be@canb.auug.org.au/
Signed-off-by: Bagas Sanjaya <bagasdotme@gmail.com>
Reviewed-by: Liam Beguin <liambeguin@gmail.com>
Signed-off-by: Luis Chamberlain <mcgrof@kernel.org>
 2023-03-24 11:33:09 -07:00
Zang Leigang
1aa63d4eb8 docs/zh_CN: fix a wrong format 
Add a missing markup for the code snippet at the end of lru_sort.rst

Signed-off-by: Zang Leigang <zangleigang@hisilicon.com>
Reviewed-by: Alex Shi <alexs@kernel.org>
Link: https://lore.kernel.org/r/20230316024519.27992-1-zangleigang@hisilicon.com
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
 2023-03-23 12:00:27 -06:00
Greg Kroah-Hartman
75cff725d9 driver core: bus: mark the struct bus_type for sysfs callbacks as constant 
struct bus_type should never be modified in a sysfs callback as there is
nothing in the structure to modify, and frankly, the structure is almost
never used in a sysfs callback, so mark it as constant to allow struct
bus_type to be moved to read-only memory.

Cc: "David S. Miller" <davem@davemloft.net>
Cc: "James E.J. Bottomley" <jejb@linux.ibm.com>
Cc: "K. Y. Srinivasan" <kys@microsoft.com>
Cc: Alexander Gordeev <agordeev@linux.ibm.com>
Cc: Alexandre Bounine <alex.bou9@gmail.com>
Cc: Alison Schofield <alison.schofield@intel.com>
Cc: Ben Widawsky <bwidawsk@kernel.org>
Cc: Dexuan Cui <decui@microsoft.com>
Cc: Eric Dumazet <edumazet@google.com>
Cc: Haiyang Zhang <haiyangz@microsoft.com>
Cc: Hannes Reinecke <hare@suse.de>
Cc: Harald Freudenberger <freude@linux.ibm.com>
Cc: Heiko Carstens <hca@linux.ibm.com>
Cc: Hu Haowen <src.res@email.cn>
Cc: Jakub Kicinski <kuba@kernel.org>
Cc: Jens Axboe <axboe@kernel.dk>
Cc: Jonathan Corbet <corbet@lwn.net>
Cc: Laurentiu Tudor <laurentiu.tudor@nxp.com>
Cc: Matt Porter <mporter@kernel.crashing.org>
Cc: Michael Ellerman <mpe@ellerman.id.au>
Cc: Paolo Abeni <pabeni@redhat.com>
Cc: Stuart Yoder <stuyoder@gmail.com>
Cc: Vasily Gorbik <gor@linux.ibm.com>
Cc: Vishal Verma <vishal.l.verma@intel.com>
Cc: Yanteng Si <siyanteng@loongson.cn>
Acked-by: Ilya Dryomov <idryomov@gmail.com> # rbd
Acked-by: Ira Weiny <ira.weiny@intel.com> # cxl
Reviewed-by: Alex Shi <alexs@kernel.org>
Acked-by: Iwona Winiarska <iwona.winiarska@intel.com>
Acked-by: Dan Williams <dan.j.williams@intel.com>
Acked-by: Bjorn Helgaas <bhelgaas@google.com>	# pci
Acked-by: Wei Liu <wei.liu@kernel.org>
Acked-by: Martin K. Petersen <martin.petersen@oracle.com> # scsi
Link: https://lore.kernel.org/r/20230313182918.1312597-23-gregkh@linuxfoundation.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
 2023-03-23 13:20:40 +01:00
Randy Dunlap
644a9cf0d2 sh: remove sh5/sh64 last fragments 
A previous patch removed most of the sh5 (sh64) support from the
kernel tree. Now remove the last stragglers.

Fixes: 37744feebc ("sh: remove sh5 support")
Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
Cc: Geert Uytterhoeven <geert+renesas@glider.be>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Rich Felker <dalias@libc.org>
Cc: Yoshinori Sato <ysato@users.sourceforge.jp>
Cc: John Paul Adrian Glaubitz <glaubitz@physik.fu-berlin.de>
Cc: linux-sh@vger.kernel.org
Acked-by: John Paul Adrian Glaubitz <glaubitz@physik.fu-berlin.de>
Reviewed-by: John Paul Adrian Glaubitz <glaubitz@physik.fu-berlin.de>
Link: https://lore.kernel.org/r/20230306040037.20350-6-rdunlap@infradead.org
Signed-off-by: John Paul Adrian Glaubitz <glaubitz@physik.fu-berlin.de>
 2023-03-23 10:02:02 +01:00
Greg Kroah-Hartman
abae262640 Merge 6.3-rc3 into char-misc-next 
We need the mainline fixes in this branch for testing and other
subsystem changes to be based properly on.

Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
 2023-03-20 09:06:37 +01:00
Vegard Nossum
44ac5abac8 Documentation/security-bugs: move from admin-guide/ to process/ 
Jiri Kosina, Jonathan Corbet, and Willy Tarreau all expressed a desire
to move this document under process/.

Create a new section for security issues in the index and group it with
embargoed-hardware-issues.

I'm doing this at the start of the series to make all the subsequent
changes show up in 'git blame'.

Existing references were updated using:

  git grep -l security-bugs ':!Documentation/translations/' | xargs sed -i 's|admin-guide/security-bugs|process/security-bugs|g'
  git grep -l security-bugs Documentation/translations/ | xargs sed -i 's|Documentation/admin-guide/security-bugs|Documentation/process/security-bugs|g'
  git grep -l security-bugs Documentation/translations/ | xargs sed -i '/Original:/s|\.\./admin-guide/security-bugs|\.\./process/security-bugs|g'

Notably, the page is not moved in the translations (due to my lack of
knowledge of these languages), but the translations have been updated
to point to the new location of the original document where these
references exist.

Link: https://lore.kernel.org/all/nycvar.YFH.7.76.2206062326230.10851@cbobk.fhfr.pm/
Suggested-by: Jiri Kosina <jikos@kernel.org>
Cc: Alex Shi <alexs@kernel.org>
Cc: Yanteng Si <siyanteng@loongson.cn>
Cc: Hu Haowen <src.res@email.cn>
Cc: Federico Vaga <federico.vaga@vaga.pv.it>
Cc: Tsugikazu Shibata <tshibata@ab.jp.nec.com>
Cc: Minchan Kim <minchan@kernel.org>
Cc: Jeimi Lee <jamee.lee@samsung.com>
Cc: Carlos Bilbao <carlos.bilbao@amd.com>
Cc: Akira Yokosawa <akiyks@gmail.com>
Signed-off-by: Vegard Nossum <vegard.nossum@oracle.com>
Acked-by: Carlos Bilbao <carlos.bilbao@amd.com>
Reviewed-by: Yanteng Si <siyanteng@loongson.cn>
Reviewed-by: Akira Yokosawa <akiyks@gmail.com>
Acked-by: Federico Vaga <federico.vaga@vaga.pv.it>
Reviewed-by: Bagas Sanjaya <bagasdotme@gmail.com>
Link: https://lore.kernel.org/r/20230305220010.20895-2-vegard.nossum@oracle.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
 2023-03-12 15:56:43 +01:00
Jiri Slaby
9b12f050c7 char: pcmcia: remove all the drivers 
These char PCMCIA drivers are buggy[1] and receive only minimal care. It
was concluded[2], that we should try to remove most pcmcia drivers
completely. Let's start with these char broken one.

Note that I also removed a UAPI header: include/uapi/linux/cm4000_cs.h.
I found only coccinelle tests mentioning some ioctl constants from that
file. But they are not actually used. Anyway, should someone complain,
we may reintroduce the header (or its parts).

[1] https://lore.kernel.org/all/f41c2765-80e0-48bc-b1e4-8cfd3230fd4a@www.fastmail.com/
[2] https://lore.kernel.org/all/c5b39544-a4fb-4796-a046-0b9be9853787@app.fastmail.com/

Signed-off-by: Jiri Slaby (SUSE) <jirislaby@kernel.org>
Cc: "Hyunwoo Kim" <imv4bel@gmail.com>
Cc: Harald Welte <laforge@gnumonks.org>
Cc: Lubomir Rintel <lkundrak@v3.sk>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Acked-by: Dominik Brodowski <linux@dominikbrodowski.net>
Reviewed-by: Arnd Bergmann <arnd@arndb.de>
Link: https://lore.kernel.org/r/20230222092302.6348-2-jirislaby@kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
 2023-03-09 17:30:27 +01:00
Mike Rapoport (IBM)
87eae26099 docs/mm: hugetlbfs_reserv: fix a reference to a file that doesn't exist 
kbuild reports:

>> Warning: Documentation/mm/hugetlbfs_reserv.rst references a file that doesn't exist: Documentation/mm/hugetlbpage.rst
>> Warning: Documentation/translations/zh_CN/mm/hugetlbfs_reserv.rst references a file that doesn't exist: Documentation/mm/hugetlbpage.rst

Fix the filename to be 'Documentation/admin-guide/mm/hugetlbpage.rst'.

Reported-by: kernel test robot <lkp@intel.com>
Link: https://lore.kernel.org/oe-kbuild-all/202302231854.sKlCmx9K-lkp@intel.com/
Fixes: ee86588960 ("docs/mm: remove useless markup")
Signed-off-by: Mike Rapoport (IBM) <rppt@kernel.org>
Link: https://lore.kernel.org/r/20230224100306.2287696-2-rppt@kernel.org
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
 2023-03-07 10:31:49 -07:00