Commit Graph

8195 Commits

Author SHA1 Message Date
Linus Torvalds
c760b3725e - A series ("kbuild: enable more warnings by default") from Arnd
Bergmann which enables a number of additional build-time warnings.  We
   fixed all the fallout which we could find, there may still be a few
   stragglers.
 
 - Samuel Holland has developed the series "Unified cross-architecture
   kernel-mode FPU API".  This does a lot of consolidation of
   per-architecture kernel-mode FPU usage and enables the use of newer AMD
   GPUs on RISC-V.
 
 - Tao Su has fixed some selftests build warnings in the series
   "Selftests: Fix compilation warnings due to missing _GNU_SOURCE
   definition".
 
 - This pull also includes a nilfs2 fixup from Ryusuke Konishi.
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Merge tag 'mm-nonmm-stable-2024-05-22-17-30' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm

Pull more non-mm updates from Andrew Morton:

 - A series ("kbuild: enable more warnings by default") from Arnd
   Bergmann which enables a number of additional build-time warnings. We
   fixed all the fallout which we could find, there may still be a few
   stragglers.

 - Samuel Holland has developed the series "Unified cross-architecture
   kernel-mode FPU API". This does a lot of consolidation of
   per-architecture kernel-mode FPU usage and enables the use of newer
   AMD GPUs on RISC-V.

 - Tao Su has fixed some selftests build warnings in the series
   "Selftests: Fix compilation warnings due to missing _GNU_SOURCE
   definition".

 - This pull also includes a nilfs2 fixup from Ryusuke Konishi.

* tag 'mm-nonmm-stable-2024-05-22-17-30' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm: (23 commits)
  nilfs2: make block erasure safe in nilfs_finish_roll_forward()
  selftests/harness: use 1024 in place of LINE_MAX
  Revert "selftests/harness: remove use of LINE_MAX"
  selftests/fpu: allow building on other architectures
  selftests/fpu: move FP code to a separate translation unit
  drm/amd/display: use ARCH_HAS_KERNEL_FPU_SUPPORT
  drm/amd/display: only use hard-float, not altivec on powerpc
  riscv: add support for kernel-mode FPU
  x86: implement ARCH_HAS_KERNEL_FPU_SUPPORT
  powerpc: implement ARCH_HAS_KERNEL_FPU_SUPPORT
  LoongArch: implement ARCH_HAS_KERNEL_FPU_SUPPORT
  lib/raid6: use CC_FLAGS_FPU for NEON CFLAGS
  arm64: crypto: use CC_FLAGS_FPU for NEON CFLAGS
  arm64: implement ARCH_HAS_KERNEL_FPU_SUPPORT
  ARM: crypto: use CC_FLAGS_FPU for NEON CFLAGS
  ARM: implement ARCH_HAS_KERNEL_FPU_SUPPORT
  arch: add ARCH_HAS_KERNEL_FPU_SUPPORT
  x86/fpu: fix asm/fpu/types.h include guard
  kbuild: enable -Wcast-function-type-strict unconditionally
  kbuild: enable -Wformat-truncation on clang
  ...
2024-05-22 18:59:29 -07:00
Linus Torvalds
5f16eb0549 Char/Misc and other driver subsystem changes for 6.10-rc1
Here is the big set of char/misc and other driver subsystem updates for
 6.10-rc1.  Nothing major here, just lots of new drivers and updates for
 apis and new hardware types.  Included in here are:
   - big IIO driver updates with more devices and drivers added
   - fpga driver updates
   - hyper-v driver updates
   - uio_pruss driver removal, no one uses it, other drivers control the
     same hardware now
   - binder minor updates
   - mhi driver updates
   - excon driver updates
   - counter driver updates
   - accessability driver updates
   - coresight driver updates
   - other hwtracing driver updates
   - nvmem driver updates
   - slimbus driver updates
   - spmi driver updates
   - other smaller misc and char driver updates
 
 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-6.10-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc

Pull char/misc and other driver subsystem updates from Greg KH:
 "Here is the big set of char/misc and other driver subsystem updates
  for 6.10-rc1. Nothing major here, just lots of new drivers and updates
  for apis and new hardware types. Included in here are:

   - big IIO driver updates with more devices and drivers added

   - fpga driver updates

   - hyper-v driver updates

   - uio_pruss driver removal, no one uses it, other drivers control the
     same hardware now

   - binder minor updates

   - mhi driver updates

   - excon driver updates

   - counter driver updates

   - accessability driver updates

   - coresight driver updates

   - other hwtracing driver updates

   - nvmem driver updates

   - slimbus driver updates

   - spmi driver updates

   - other smaller misc and char driver updates

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

* tag 'char-misc-6.10-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc: (319 commits)
  misc: ntsync: mark driver as "broken" to prevent from building
  spmi: pmic-arb: Add multi bus support
  spmi: pmic-arb: Register controller for bus instead of arbiter
  spmi: pmic-arb: Make core resources acquiring a version operation
  spmi: pmic-arb: Make the APID init a version operation
  spmi: pmic-arb: Fix some compile warnings about members not being described
  dt-bindings: spmi: Deprecate qcom,bus-id
  dt-bindings: spmi: Add X1E80100 SPMI PMIC ARB schema
  spmi: pmic-arb: Replace three IS_ERR() calls by null pointer checks in spmi_pmic_arb_probe()
  spmi: hisi-spmi-controller: Do not override device identifier
  dt-bindings: spmi: hisilicon,hisi-spmi-controller: clean up example
  dt-bindings: spmi: hisilicon,hisi-spmi-controller: fix binding references
  spmi: make spmi_bus_type const
  extcon: adc-jack: Document missing struct members
  extcon: realtek: Remove unused of_gpio.h
  extcon: usbc-cros-ec: Convert to platform remove callback returning void
  extcon: usb-gpio: Convert to platform remove callback returning void
  extcon: max77843: Convert to platform remove callback returning void
  extcon: max3355: Convert to platform remove callback returning void
  extcon: intel-mrfld: Convert to platform remove callback returning void
  ...
2024-05-22 12:26:46 -07:00
Linus Torvalds
7eae27cd12 - Fix-ups
- FB Backlight interaction overhaul
    - Remove superfluous code and simplify overall
    - Constify various structs and struct attributes
 
  - Bug Fixes
    - Repair LED flickering
    - Fix signedness bugs
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Merge tag 'backlight-next-6.10' of git://git.kernel.org/pub/scm/linux/kernel/git/lee/backlight

Pull backlight updates from Lee Jones:
 "Fix-ups:
   - FB Backlight interaction overhaul
   - Remove superfluous code and simplify overall
   - Constify various structs and struct attributes

  Bug Fixes:
   - Repair LED flickering
   - Fix signedness bugs"

* tag 'backlight-next-6.10' of git://git.kernel.org/pub/scm/linux/kernel/git/lee/backlight: (42 commits)
  backlight: sky81452-backlight: Remove unnecessary call to of_node_get()
  backlight: mp3309c: Fix LEDs flickering in PWM mode
  backlight: otm3225a: Drop driver owner assignment
  backlight: lp8788: Drop support for platform data
  backlight: lcd: Make lcd_class constant
  backlight: Make backlight_class constant
  backlight: mp3309c: Fix signedness bug in mp3309c_parse_fwnode()
  const_structs.checkpatch: add lcd_ops
  fbdev: omap: lcd_ams_delta: Constify lcd_ops
  fbdev: imx: Constify lcd_ops
  fbdev: clps711x: Constify lcd_ops
  HID: picoLCD: Constify lcd_ops
  backlight: tdo24m: Constify lcd_ops
  backlight: platform_lcd: Constify lcd_ops
  backlight: otm3225a: Constify lcd_ops
  backlight: ltv350qv: Constify lcd_ops
  backlight: lms501kf03: Constify lcd_ops
  backlight: lms283gf05: Constify lcd_ops
  backlight: l4f00242t03: Constify lcd_ops
  backlight: jornada720_lcd: Constify lcd_ops
  ...
2024-05-22 10:45:12 -07:00
Linus Torvalds
0bfbc914d9 RISC-V Patches for the 6.10 Merge Window, Part 1
* Support for byte/half-word compare-and-exchange, emulated via LR/SC
   loops.
 * Support for Rust.
 * Support for Zihintpause in hwprobe.
 * Support for the PR_RISCV_SET_ICACHE_FLUSH_CTX prctl().
 * Support for lockless lockrefs.
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Merge tag 'riscv-for-linus-6.10-mw1' of git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux

Pull RISC-V updates from Palmer Dabbelt:

 - Add byte/half-word compare-and-exchange, emulated via LR/SC loops

 - Support for Rust

 - Support for Zihintpause in hwprobe

 - Add PR_RISCV_SET_ICACHE_FLUSH_CTX prctl()

 - Support lockless lockrefs

* tag 'riscv-for-linus-6.10-mw1' of git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux: (42 commits)
  riscv: defconfig: Enable CONFIG_CLK_SOPHGO_CV1800
  riscv: select ARCH_HAS_FAST_MULTIPLIER
  riscv: mm: still create swiotlb buffer for kmalloc() bouncing if required
  riscv: Annotate pgtable_l{4,5}_enabled with __ro_after_init
  riscv: Remove redundant CONFIG_64BIT from pgtable_l{4,5}_enabled
  riscv: mm: Always use an ASID to flush mm contexts
  riscv: mm: Preserve global TLB entries when switching contexts
  riscv: mm: Make asid_bits a local variable
  riscv: mm: Use a fixed layout for the MM context ID
  riscv: mm: Introduce cntx2asid/cntx2version helper macros
  riscv: Avoid TLB flush loops when affected by SiFive CIP-1200
  riscv: Apply SiFive CIP-1200 workaround to single-ASID sfence.vma
  riscv: mm: Combine the SMP and UP TLB flush code
  riscv: Only send remote fences when some other CPU is online
  riscv: mm: Broadcast kernel TLB flushes only when needed
  riscv: Use IPIs for remote cache/TLB flushes by default
  riscv: Factor out page table TLB synchronization
  riscv: Flush the instruction cache during SMP bringup
  riscv: hwprobe: export Zihintpause ISA extension
  riscv: misaligned: remove CONFIG_RISCV_M_MODE specific code
  ...
2024-05-22 09:56:00 -07:00
Linus Torvalds
4f05e82003 LoongArch changes for v6.10
1, Select some options in Kconfig;
 2, Give a chance to build with !CONFIG_SMP;
 3, Switch to use built-in rustc target;
 4, Add new supported device nodes to dts;
 5, Some bug fixes and other small changes;
 6, Update the default config file.
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Merge tag 'loongarch-6.10' of git://git.kernel.org/pub/scm/linux/kernel/git/chenhuacai/linux-loongson

Pull LoongArch updates from Huacai Chen:

 - Select some options in Kconfig

 - Give a chance to build with !CONFIG_SMP

 - Switch to use built-in rustc target

 - Add new supported device nodes to dts

 - Some bug fixes and other small changes

 - Update the default config file

* tag 'loongarch-6.10' of git://git.kernel.org/pub/scm/linux/kernel/git/chenhuacai/linux-loongson:
  LoongArch: Update Loongson-3 default config file
  LoongArch: dts: Add new supported device nodes to Loongson-2K2000
  LoongArch: dts: Add new supported device nodes to Loongson-2K0500
  LoongArch: dts: Remove "disabled" state of clock controller node
  LoongArch: rust: Switch to use built-in rustc target
  LoongArch: Fix callchain parse error with kernel tracepoint events again
  LoongArch: Give a chance to build with !CONFIG_SMP
  LoongArch: Select THP_SWAP if HAVE_ARCH_TRANSPARENT_HUGEPAGE
  LoongArch: Select ARCH_WANT_DEFAULT_BPF_JIT
  LoongArch: Select ARCH_SUPPORTS_INT128 if CC_HAS_INT128
  LoongArch: Select ARCH_HAS_FAST_MULTIPLIER
2024-05-22 09:43:07 -07:00
Linus Torvalds
2a8120d7b4 more s390 updates for 6.10 merge window
- Switch read and write software bits for PUDs
 
 - Add missing hardware bits for PUDs and PMDs
 
 - Generate unwind information for C modules to fix GDB unwind
   error for vDSO functions
 
 - Create .build-id links for unstripped vDSO files to enable
   vDSO debugging with symbols
 
 - Use standard stack frame layout for vDSO generated stack frames
   to manually walk stack frames without DWARF information
 
 - Rework perf_callchain_user() and arch_stack_walk_user() functions
   to reduce code duplication
 
 - Skip first stack frame when walking user stack
 
 - Add basic checks to identify invalid instruction pointers when
   walking stack frames
 
 - Introduce and use struct stack_frame_vdso_wrapper within vDSO user
   wrapper code to automatically generate an asm-offset define. Also
   use STACK_FRAME_USER_OVERHEAD instead of STACK_FRAME_OVERHEAD to
   document that the code works with user space stack
 
 - Clear the backchain of the extra stack frame added by the vDSO user
   wrapper code. This allows the user stack walker to detect and skip
   the non-standard stack frame. Without this an incorrect instruction
   pointer would be added to stack traces.
 
 - Rewrite psw_idle() function in C to ease maintenance and further
   enhancements
 
 - Remove get_vtimer() function and use get_cpu_timer() instead
 
 - Mark psw variable in __load_psw_mask() as __unitialized to avoid
   superfluous clearing of PSW
 
 - Remove obsolete and superfluous comment about removed TIF_FPU flag
 
 - Replace memzero_explicit() and kfree() with kfree_sensitive() to
   fix warnings reported by Coccinelle
 
 - Wipe sensitive data and all copies of protected- or secure-keys
   from stack when an IOCTL fails
 
 - Both do_airq_interrupt() and do_io_interrupt() functions set
   CIF_NOHZ_DELAY flag. Move it in do_io_irq() to simplify the code
 
 - Provide iucv_alloc_device() and iucv_release_device() helpers,
   which can be used to deduplicate more or less identical IUCV
   device allocation and release code in four different drivers
 
 - Make use of iucv_alloc_device() and iucv_release_device()
   helpers to get rid of quite some code and also remove a
   cast to an incompatible function (clang W=1)
 
 - There is no user of iucv_root outside of the core IUCV code left.
   Therefore remove the EXPORT_SYMBOL
 
 - __apply_alternatives() contains a runtime check which verifies
   that the size of the to be patched code area is even. Convert
   this to a compile time check
 
 - Increase size of buffers for sending z/VM CP DIAGNOSE X'008'
   commands from 128 to 240
 
 - Do not accept z/VM CP DIAGNOSE X'008' commands longer than
   maximally allowed
 
 - Use correct defines IPL_BP_NVME_LEN and IPL_BP0_NVME_LEN instead
   of IPL_BP_FCP_LEN and IPL_BP0_FCP_LEN ones to initialize NVMe
   reIPL block on 'scp_data' sysfs attribute update
 
 - Initialize the correct fields of the NVMe dump block, which
   were confused with FCP fields
 
 - Refactor macros for 'scp_data' (re-)IPL sysfs attribute to
   reduce code duplication
 
 - Introduce 'scp_data' sysfs attribute for dump IPL to allow tools
   such as dumpconf passing additional kernel command line parameters
   to a stand-alone dumper
 
 - Rework the CPACF query functions to use the correct RRE or RRF
   instruction formats and set instruction register fields correctly
 
 - Instead of calling BUG() at runtime force a link error during
   compile when a unsupported opcode is used with __cpacf_query()
   or __cpacf_check_opcode() functions
 
 - Fix a crash in ap_parse_bitmap_str() function on /sys/bus/ap/apmask
   or /sys/bus/ap/aqmask sysfs file update with a relative mask value
 
 - Fix "bindings complete" udev event which should be sent once all AP
   devices have been bound to device drivers and again when unbind/bind
   actions take place and all AP devices are bound again
 
 - Facility list alt_stfle_fac_list is nowhere used in the decompressor,
   therefore remove it there
 
 - Remove custom kprobes insn slot allocator in favour of the standard
   module_alloc() one, since kernel image and module areas are located
   within 4GB
 
 - Use kvcalloc() instead of kvmalloc_array() in zcrypt driver to avoid
   calling memset() with a large byte count and get rid of the sparse
   warning as result
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Merge tag 's390-6.10-2' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux

Pull more s390 updates from Alexander Gordeev:

 - Switch read and write software bits for PUDs

 - Add missing hardware bits for PUDs and PMDs

 - Generate unwind information for C modules to fix GDB unwind error for
   vDSO functions

 - Create .build-id links for unstripped vDSO files to enable vDSO
   debugging with symbols

 - Use standard stack frame layout for vDSO generated stack frames to
   manually walk stack frames without DWARF information

 - Rework perf_callchain_user() and arch_stack_walk_user() functions to
   reduce code duplication

 - Skip first stack frame when walking user stack

 - Add basic checks to identify invalid instruction pointers when
   walking stack frames

 - Introduce and use struct stack_frame_vdso_wrapper within vDSO user
   wrapper code to automatically generate an asm-offset define. Also use
   STACK_FRAME_USER_OVERHEAD instead of STACK_FRAME_OVERHEAD to document
   that the code works with user space stack

 - Clear the backchain of the extra stack frame added by the vDSO user
   wrapper code. This allows the user stack walker to detect and skip
   the non-standard stack frame. Without this an incorrect instruction
   pointer would be added to stack traces.

 - Rewrite psw_idle() function in C to ease maintenance and further
   enhancements

 - Remove get_vtimer() function and use get_cpu_timer() instead

 - Mark psw variable in __load_psw_mask() as __unitialized to avoid
   superfluous clearing of PSW

 - Remove obsolete and superfluous comment about removed TIF_FPU flag

 - Replace memzero_explicit() and kfree() with kfree_sensitive() to fix
   warnings reported by Coccinelle

 - Wipe sensitive data and all copies of protected- or secure-keys from
   stack when an IOCTL fails

 - Both do_airq_interrupt() and do_io_interrupt() functions set
   CIF_NOHZ_DELAY flag. Move it in do_io_irq() to simplify the code

 - Provide iucv_alloc_device() and iucv_release_device() helpers, which
   can be used to deduplicate more or less identical IUCV device
   allocation and release code in four different drivers

 - Make use of iucv_alloc_device() and iucv_release_device() helpers to
   get rid of quite some code and also remove a cast to an incompatible
   function (clang W=1)

 - There is no user of iucv_root outside of the core IUCV code left.
   Therefore remove the EXPORT_SYMBOL

 - __apply_alternatives() contains a runtime check which verifies that
   the size of the to be patched code area is even. Convert this to a
   compile time check

 - Increase size of buffers for sending z/VM CP DIAGNOSE X'008' commands
   from 128 to 240

 - Do not accept z/VM CP DIAGNOSE X'008' commands longer than maximally
   allowed

 - Use correct defines IPL_BP_NVME_LEN and IPL_BP0_NVME_LEN instead of
   IPL_BP_FCP_LEN and IPL_BP0_FCP_LEN ones to initialize NVMe reIPL
   block on 'scp_data' sysfs attribute update

 - Initialize the correct fields of the NVMe dump block, which were
   confused with FCP fields

 - Refactor macros for 'scp_data' (re-)IPL sysfs attribute to reduce
   code duplication

 - Introduce 'scp_data' sysfs attribute for dump IPL to allow tools such
   as dumpconf passing additional kernel command line parameters to a
   stand-alone dumper

 - Rework the CPACF query functions to use the correct RRE or RRF
   instruction formats and set instruction register fields correctly

 - Instead of calling BUG() at runtime force a link error during compile
   when a unsupported opcode is used with __cpacf_query() or
   __cpacf_check_opcode() functions

 - Fix a crash in ap_parse_bitmap_str() function on /sys/bus/ap/apmask
   or /sys/bus/ap/aqmask sysfs file update with a relative mask value

 - Fix "bindings complete" udev event which should be sent once all AP
   devices have been bound to device drivers and again when unbind/bind
   actions take place and all AP devices are bound again

 - Facility list alt_stfle_fac_list is nowhere used in the decompressor,
   therefore remove it there

 - Remove custom kprobes insn slot allocator in favour of the standard
   module_alloc() one, since kernel image and module areas are located
   within 4GB

 - Use kvcalloc() instead of kvmalloc_array() in zcrypt driver to avoid
   calling memset() with a large byte count and get rid of the sparse
   warning as result

* tag 's390-6.10-2' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux: (39 commits)
  s390/zcrypt: Use kvcalloc() instead of kvmalloc_array()
  s390/kprobes: Remove custom insn slot allocator
  s390/boot: Remove alt_stfle_fac_list from decompressor
  s390/ap: Fix bind complete udev event sent after each AP bus scan
  s390/ap: Fix crash in AP internal function modify_bitmap()
  s390/cpacf: Make use of invalid opcode produce a link error
  s390/cpacf: Split and rework cpacf query functions
  s390/ipl: Introduce sysfs attribute 'scp_data' for dump ipl
  s390/ipl: Introduce macros for (re)ipl sysfs attribute 'scp_data'
  s390/ipl: Fix incorrect initialization of nvme dump block
  s390/ipl: Fix incorrect initialization of len fields in nvme reipl block
  s390/ipl: Do not accept z/VM CP diag X'008' cmds longer than max length
  s390/ipl: Fix size of vmcmd buffers for sending z/VM CP diag X'008' cmds
  s390/alternatives: Convert runtime sanity check into compile time check
  s390/iucv: Unexport iucv_root
  tty: hvc-iucv: Make use of iucv_alloc_device()
  s390/smsgiucv_app: Make use of iucv_alloc_device()
  s390/netiucv: Make use of iucv_alloc_device()
  s390/vmlogrdr: Make use of iucv_alloc_device()
  s390/iucv: Provide iucv_alloc_device() / iucv_release_device()
  ...
2024-05-21 12:09:36 -07:00
Linus Torvalds
334e5639fc m68knommu: updates and fixes for v6.10
. remove use of kernel config option from uapi header
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Merge tag 'm68knommu-for-v6.10' of git://git.kernel.org/pub/scm/linux/kernel/git/gerg/m68knommu

Pull m68knommu update from Greg Ungerer:

 . remove use of kernel config option from uapi header

* tag 'm68knommu-for-v6.10' of git://git.kernel.org/pub/scm/linux/kernel/git/gerg/m68knommu:
  m68k: Avoid CONFIG_COLDFIRE switch in uapi header
2024-05-21 12:05:40 -07:00
Linus Torvalds
8f6a15f095 Coccinelle commits for 6.10
One patch slightly improves the text in a comment.
 
 The other patch (on minmax.cocci) removes a report about ? being used in
 return statements that has been generating not very useful suggestions
 to change idiomatic code.
 
 Signed-off-by: Julia Lawall <Julia.Lawall@inria.fr>
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Merge tag 'cocci-for-6.10' of git://git.kernel.org/pub/scm/linux/kernel/git/jlawall/linux

Pull coccinelle updates from Julia Lawall:
 "One patch slightly improves the text in a comment.

  The other patch (on minmax.cocci) removes a report about ? being used
  in return statements that has been generating not very useful
  suggestions to change idiomatic code"

* tag 'cocci-for-6.10' of git://git.kernel.org/pub/scm/linux/kernel/git/jlawall/linux:
  Coccinelle: pm_runtime: Fix grammar in comment
  coccinelle: misc: minmax: Suppress reports for err returns
2024-05-20 16:00:04 -07:00
Thorsten Blum
88a1fc21df Coccinelle: pm_runtime: Fix grammar in comment
s/does not use unnecessary/do not unnecessarily use/

Signed-off-by: Thorsten Blum <thorsten.blum@toblux.com>
Signed-off-by: Julia Lawall <Julia.Lawall@inria.fr>
2024-05-20 21:31:33 +02:00
Ricardo Ribalda
e4655196e2 coccinelle: misc: minmax: Suppress reports for err returns
Most of the people prefer:

return ret < 0 ? ret: 0;

than:

return min(ret, 0);

Let's tweak the cocci file to ignore those lines completely.

Signed-off-by: Ricardo Ribalda <ribalda@chromium.org>
Signed-off-by: Julia Lawall <Julia.Lawall@inria.fr>
2024-05-20 21:31:20 +02:00
Arnd Bergmann
bd2a70e97a kbuild: enable -Wcast-function-type-strict unconditionally
All known function cast warnings are now addressed, so the warning can be
enabled globally to catch new ones more quickly.

Link: https://lkml.kernel.org/r/20240415122037.1983124-6-arnd@kernel.org
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Reviewed-by: Kees Cook <keescook@chromium.org>
Cc: Masahiro Yamada <masahiroy@kernel.org>
Cc: Nathan Chancellor <nathan@kernel.org>
Cc: Nicolas Schier <nicolas@fjasle.eu>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
2024-05-19 14:36:16 -07:00
Arnd Bergmann
908dd50827 kbuild: enable -Wformat-truncation on clang
This warning option still produces output on gcc but is now clean when
building with clang, so enable it conditionally on the compiler for now.

As far as I can tell, the remaining warnings with gcc are the result of
analysing the code more deeply across inlining, while clang only does this
within a function.

Link: https://lore.kernel.org/lkml/20240326230511.GA2796782@dev-arch.thelio-3990X/
Link: https://lore.kernel.org/linux-patches/20231002-disable-wformat-truncation-overflow-non-kprintf-v1-1-35179205c8d9@kernel.org/
Link: https://lkml.kernel.org/r/20240415122037.1983124-5-arnd@kernel.org
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Cc: Kees Cook <keescook@chromium.org>
Cc: Masahiro Yamada <masahiroy@kernel.org>
Cc: Nathan Chancellor <nathan@kernel.org>
Cc: Nicolas Schier <nicolas@fjasle.eu>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
2024-05-19 14:36:16 -07:00
Arnd Bergmann
06bb7fc0fe kbuild: turn on -Wrestrict by default
All known -Wrestrict warnings are addressed now, so don't disable the
warning any more.

Link: https://lkml.kernel.org/r/20240415122037.1983124-4-arnd@kernel.org
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Cc: Kees Cook <keescook@chromium.org>
Cc: Masahiro Yamada <masahiroy@kernel.org>
Cc: Nathan Chancellor <nathan@kernel.org>
Cc: Nicolas Schier <nicolas@fjasle.eu>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
2024-05-19 14:36:16 -07:00
Arnd Bergmann
2c1460d3b4 kbuild: remove redundant extra warning flags
There is no point in turning individual options off and then on again, or
vice versa, as the last one always wins.  Now that -Wextra always gets
passed first, remove all the redundant lines about warnings that are
implied by either -Wall or -Wextra, and keep only the last one that
disables it in some configurations.

This should not have any effect but keep the Makefile more readable and
the command line shorter.

Link: https://lkml.kernel.org/r/20240415122037.1983124-3-arnd@kernel.org
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Cc: Kees Cook <keescook@chromium.org>
Cc: Masahiro Yamada <masahiroy@kernel.org>
Cc: Nathan Chancellor <nathan@kernel.org>
Cc: Nicolas Schier <nicolas@fjasle.eu>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
2024-05-19 14:36:16 -07:00
Arnd Bergmann
f5982cceb3 kbuild: turn on -Wextra by default
Patch series "kbuild: enable more warnings by default", v3.

All the warning fixes I sent for these warnings have been merged into
mainline or linux-next, so let's turn them on by default.


This patch (of 6):

The -Wextra option controls a number of different warnings that differ
slightly by compiler version.  Some are useful in general, others are
better left at W=1 or higher.  Based on earlier work, the ones that should
be disabled by default are left for the higher warning levels already, and
a lot of the useful ones have no remaining output when enabled.

Move the -Wextra option up into the set of default-enabled warnings and
just rely on the individual ones getting disabled as needed.

The -Wunused warning was always grouped with this, so turn it on by
default as well, except for the -Wunused-parameter warning that really has
no value at all for the kernel since many interfaces have intentionally
unused arguments.

Link: https://lkml.kernel.org/r/20240415122037.1983124-1-arnd@kernel.org
Link: https://lkml.kernel.org/r/20240415122037.1983124-2-arnd@kernel.org
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Nathan Chancellor <nathan@kernel.org>
Cc: Kees Cook <keescook@chromium.org>
Cc: Masahiro Yamada <masahiroy@kernel.org>
Cc: Nicolas Schier <nicolas@fjasle.eu>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
2024-05-19 14:36:15 -07:00
Linus Torvalds
eb6a9339ef Mainly singleton patches, documented in their respective changelogs.
Notable series include:
 
 - Some maintenance and performance work for ocfs2 in Heming Zhao's
   series "improve write IO performance when fragmentation is high".
 
 - Some ocfs2 bugfixes from Su Yue in the series "ocfs2 bugs fixes
   exposed by fstests".
 
 - kfifo header rework from Andy Shevchenko in the series "kfifo: Clean
   up kfifo.h".
 
 - GDB script fixes from Florian Rommel in the series "scripts/gdb: Fixes
   for $lx_current and $lx_per_cpu".
 
 - After much discussion, a coding-style update from Barry Song
   explaining one reason why inline functions are preferred over macros.
   The series is "codingstyle: avoid unused parameters for a function-like
   macro".
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Merge tag 'mm-nonmm-stable-2024-05-19-11-56' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm

Pull non-mm updates from Andrew Morton:
 "Mainly singleton patches, documented in their respective changelogs.
  Notable series include:

   - Some maintenance and performance work for ocfs2 in Heming Zhao's
     series "improve write IO performance when fragmentation is high".

   - Some ocfs2 bugfixes from Su Yue in the series "ocfs2 bugs fixes
     exposed by fstests".

   - kfifo header rework from Andy Shevchenko in the series "kfifo:
     Clean up kfifo.h".

   - GDB script fixes from Florian Rommel in the series "scripts/gdb:
     Fixes for $lx_current and $lx_per_cpu".

   - After much discussion, a coding-style update from Barry Song
     explaining one reason why inline functions are preferred over
     macros. The series is "codingstyle: avoid unused parameters for a
     function-like macro""

* tag 'mm-nonmm-stable-2024-05-19-11-56' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm: (62 commits)
  fs/proc: fix softlockup in __read_vmcore
  nilfs2: convert BUG_ON() in nilfs_finish_roll_forward() to WARN_ON()
  scripts: checkpatch: check unused parameters for function-like macro
  Documentation: coding-style: ask function-like macros to evaluate parameters
  nilfs2: use __field_struct() for a bitwise field
  selftests/kcmp: remove unused open mode
  nilfs2: remove calls to folio_set_error() and folio_clear_error()
  kernel/watchdog_perf.c: tidy up kerneldoc
  watchdog: allow nmi watchdog to use raw perf event
  watchdog: handle comma separated nmi_watchdog command line
  nilfs2: make superblock data array index computation sparse friendly
  squashfs: remove calls to set the folio error flag
  squashfs: convert squashfs_symlink_read_folio to use folio APIs
  scripts/gdb: fix detection of current CPU in KGDB
  scripts/gdb: make get_thread_info accept pointers
  scripts/gdb: fix parameter handling in $lx_per_cpu
  scripts/gdb: fix failing KGDB detection during probe
  kfifo: don't use "proxy" headers
  media: stih-cec: add missing io.h
  media: rc: add missing io.h
  ...
2024-05-19 14:02:03 -07:00
Linus Torvalds
61307b7be4 The usual shower of singleton fixes and minor series all over MM,
documented (hopefully adequately) in the respective changelogs.  Notable
 series include:
 
 - Lucas Stach has provided some page-mapping
   cleanup/consolidation/maintainability work in the series "mm/treewide:
   Remove pXd_huge() API".
 
 - In the series "Allow migrate on protnone reference with
   MPOL_PREFERRED_MANY policy", Donet Tom has optimized mempolicy's
   MPOL_PREFERRED_MANY mode, yielding almost doubled performance in one
   test.
 
 - In their series "Memory allocation profiling" Kent Overstreet and
   Suren Baghdasaryan have contributed a means of determining (via
   /proc/allocinfo) whereabouts in the kernel memory is being allocated:
   number of calls and amount of memory.
 
 - Matthew Wilcox has provided the series "Various significant MM
   patches" which does a number of rather unrelated things, but in largely
   similar code sites.
 
 - In his series "mm: page_alloc: freelist migratetype hygiene" Johannes
   Weiner has fixed the page allocator's handling of migratetype requests,
   with resulting improvements in compaction efficiency.
 
 - In the series "make the hugetlb migration strategy consistent" Baolin
   Wang has fixed a hugetlb migration issue, which should improve hugetlb
   allocation reliability.
 
 - Liu Shixin has hit an I/O meltdown caused by readahead in a
   memory-tight memcg.  Addressed in the series "Fix I/O high when memory
   almost met memcg limit".
 
 - In the series "mm/filemap: optimize folio adding and splitting" Kairui
   Song has optimized pagecache insertion, yielding ~10% performance
   improvement in one test.
 
 - Baoquan He has cleaned up and consolidated the early zone
   initialization code in the series "mm/mm_init.c: refactor
   free_area_init_core()".
 
 - Baoquan has also redone some MM initializatio code in the series
   "mm/init: minor clean up and improvement".
 
 - MM helper cleanups from Christoph Hellwig in his series "remove
   follow_pfn".
 
 - More cleanups from Matthew Wilcox in the series "Various page->flags
   cleanups".
 
 - Vlastimil Babka has contributed maintainability improvements in the
   series "memcg_kmem hooks refactoring".
 
 - More folio conversions and cleanups in Matthew Wilcox's series
 
 	"Convert huge_zero_page to huge_zero_folio"
 	"khugepaged folio conversions"
 	"Remove page_idle and page_young wrappers"
 	"Use folio APIs in procfs"
 	"Clean up __folio_put()"
 	"Some cleanups for memory-failure"
 	"Remove page_mapping()"
 	"More folio compat code removal"
 
 - David Hildenbrand chipped in with "fs/proc/task_mmu: convert hugetlb
   functions to work on folis".
 
 - Code consolidation and cleanup work related to GUP's handling of
   hugetlbs in Peter Xu's series "mm/gup: Unify hugetlb, part 2".
 
 - Rick Edgecombe has developed some fixes to stack guard gaps in the
   series "Cover a guard gap corner case".
 
 - Jinjiang Tu has fixed KSM's behaviour after a fork+exec in the series
   "mm/ksm: fix ksm exec support for prctl".
 
 - Baolin Wang has implemented NUMA balancing for multi-size THPs.  This
   is a simple first-cut implementation for now.  The series is "support
   multi-size THP numa balancing".
 
 - Cleanups to vma handling helper functions from Matthew Wilcox in the
   series "Unify vma_address and vma_pgoff_address".
 
 - Some selftests maintenance work from Dev Jain in the series
   "selftests/mm: mremap_test: Optimizations and style fixes".
 
 - Improvements to the swapping of multi-size THPs from Ryan Roberts in
   the series "Swap-out mTHP without splitting".
 
 - Kefeng Wang has significantly optimized the handling of arm64's
   permission page faults in the series
 
 	"arch/mm/fault: accelerate pagefault when badaccess"
 	"mm: remove arch's private VM_FAULT_BADMAP/BADACCESS"
 
 - GUP cleanups from David Hildenbrand in "mm/gup: consistently call it
   GUP-fast".
 
 - hugetlb fault code cleanups from Vishal Moola in "Hugetlb fault path to
   use struct vm_fault".
 
 - selftests build fixes from John Hubbard in the series "Fix
   selftests/mm build without requiring "make headers"".
 
 - Memory tiering fixes/improvements from Ho-Ren (Jack) Chuang in the
   series "Improved Memory Tier Creation for CPUless NUMA Nodes".  Fixes
   the initialization code so that migration between different memory types
   works as intended.
 
 - David Hildenbrand has improved follow_pte() and fixed an errant driver
   in the series "mm: follow_pte() improvements and acrn follow_pte()
   fixes".
 
 - David also did some cleanup work on large folio mapcounts in his
   series "mm: mapcount for large folios + page_mapcount() cleanups".
 
 - Folio conversions in KSM in Alex Shi's series "transfer page to folio
   in KSM".
 
 - Barry Song has added some sysfs stats for monitoring multi-size THP's
   in the series "mm: add per-order mTHP alloc and swpout counters".
 
 - Some zswap cleanups from Yosry Ahmed in the series "zswap same-filled
   and limit checking cleanups".
 
 - Matthew Wilcox has been looking at buffer_head code and found the
   documentation to be lacking.  The series is "Improve buffer head
   documentation".
 
 - Multi-size THPs get more work, this time from Lance Yang.  His series
   "mm/madvise: enhance lazyfreeing with mTHP in madvise_free" optimizes
   the freeing of these things.
 
 - Kemeng Shi has added more userspace-visible writeback instrumentation
   in the series "Improve visibility of writeback".
 
 - Kemeng Shi then sent some maintenance work on top in the series "Fix
   and cleanups to page-writeback".
 
 - Matthew Wilcox reduces mmap_lock traffic in the anon vma code in the
   series "Improve anon_vma scalability for anon VMAs".  Intel's test bot
   reported an improbable 3x improvement in one test.
 
 - SeongJae Park adds some DAMON feature work in the series
 
 	"mm/damon: add a DAMOS filter type for page granularity access recheck"
 	"selftests/damon: add DAMOS quota goal test"
 
 - Also some maintenance work in the series
 
 	"mm/damon/paddr: simplify page level access re-check for pageout"
 	"mm/damon: misc fixes and improvements"
 
 - David Hildenbrand has disabled some known-to-fail selftests ni the
   series "selftests: mm: cow: flag vmsplice() hugetlb tests as XFAIL".
 
 - memcg metadata storage optimizations from Shakeel Butt in "memcg:
   reduce memory consumption by memcg stats".
 
 - DAX fixes and maintenance work from Vishal Verma in the series
   "dax/bus.c: Fixups for dax-bus locking".
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Merge tag 'mm-stable-2024-05-17-19-19' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm

Pull mm updates from Andrew Morton:
 "The usual shower of singleton fixes and minor series all over MM,
  documented (hopefully adequately) in the respective changelogs.
  Notable series include:

   - Lucas Stach has provided some page-mapping cleanup/consolidation/
     maintainability work in the series "mm/treewide: Remove pXd_huge()
     API".

   - In the series "Allow migrate on protnone reference with
     MPOL_PREFERRED_MANY policy", Donet Tom has optimized mempolicy's
     MPOL_PREFERRED_MANY mode, yielding almost doubled performance in
     one test.

   - In their series "Memory allocation profiling" Kent Overstreet and
     Suren Baghdasaryan have contributed a means of determining (via
     /proc/allocinfo) whereabouts in the kernel memory is being
     allocated: number of calls and amount of memory.

   - Matthew Wilcox has provided the series "Various significant MM
     patches" which does a number of rather unrelated things, but in
     largely similar code sites.

   - In his series "mm: page_alloc: freelist migratetype hygiene"
     Johannes Weiner has fixed the page allocator's handling of
     migratetype requests, with resulting improvements in compaction
     efficiency.

   - In the series "make the hugetlb migration strategy consistent"
     Baolin Wang has fixed a hugetlb migration issue, which should
     improve hugetlb allocation reliability.

   - Liu Shixin has hit an I/O meltdown caused by readahead in a
     memory-tight memcg. Addressed in the series "Fix I/O high when
     memory almost met memcg limit".

   - In the series "mm/filemap: optimize folio adding and splitting"
     Kairui Song has optimized pagecache insertion, yielding ~10%
     performance improvement in one test.

   - Baoquan He has cleaned up and consolidated the early zone
     initialization code in the series "mm/mm_init.c: refactor
     free_area_init_core()".

   - Baoquan has also redone some MM initializatio code in the series
     "mm/init: minor clean up and improvement".

   - MM helper cleanups from Christoph Hellwig in his series "remove
     follow_pfn".

   - More cleanups from Matthew Wilcox in the series "Various
     page->flags cleanups".

   - Vlastimil Babka has contributed maintainability improvements in the
     series "memcg_kmem hooks refactoring".

   - More folio conversions and cleanups in Matthew Wilcox's series:
	"Convert huge_zero_page to huge_zero_folio"
	"khugepaged folio conversions"
	"Remove page_idle and page_young wrappers"
	"Use folio APIs in procfs"
	"Clean up __folio_put()"
	"Some cleanups for memory-failure"
	"Remove page_mapping()"
	"More folio compat code removal"

   - David Hildenbrand chipped in with "fs/proc/task_mmu: convert
     hugetlb functions to work on folis".

   - Code consolidation and cleanup work related to GUP's handling of
     hugetlbs in Peter Xu's series "mm/gup: Unify hugetlb, part 2".

   - Rick Edgecombe has developed some fixes to stack guard gaps in the
     series "Cover a guard gap corner case".

   - Jinjiang Tu has fixed KSM's behaviour after a fork+exec in the
     series "mm/ksm: fix ksm exec support for prctl".

   - Baolin Wang has implemented NUMA balancing for multi-size THPs.
     This is a simple first-cut implementation for now. The series is
     "support multi-size THP numa balancing".

   - Cleanups to vma handling helper functions from Matthew Wilcox in
     the series "Unify vma_address and vma_pgoff_address".

   - Some selftests maintenance work from Dev Jain in the series
     "selftests/mm: mremap_test: Optimizations and style fixes".

   - Improvements to the swapping of multi-size THPs from Ryan Roberts
     in the series "Swap-out mTHP without splitting".

   - Kefeng Wang has significantly optimized the handling of arm64's
     permission page faults in the series
	"arch/mm/fault: accelerate pagefault when badaccess"
	"mm: remove arch's private VM_FAULT_BADMAP/BADACCESS"

   - GUP cleanups from David Hildenbrand in "mm/gup: consistently call
     it GUP-fast".

   - hugetlb fault code cleanups from Vishal Moola in "Hugetlb fault
     path to use struct vm_fault".

   - selftests build fixes from John Hubbard in the series "Fix
     selftests/mm build without requiring "make headers"".

   - Memory tiering fixes/improvements from Ho-Ren (Jack) Chuang in the
     series "Improved Memory Tier Creation for CPUless NUMA Nodes".
     Fixes the initialization code so that migration between different
     memory types works as intended.

   - David Hildenbrand has improved follow_pte() and fixed an errant
     driver in the series "mm: follow_pte() improvements and acrn
     follow_pte() fixes".

   - David also did some cleanup work on large folio mapcounts in his
     series "mm: mapcount for large folios + page_mapcount() cleanups".

   - Folio conversions in KSM in Alex Shi's series "transfer page to
     folio in KSM".

   - Barry Song has added some sysfs stats for monitoring multi-size
     THP's in the series "mm: add per-order mTHP alloc and swpout
     counters".

   - Some zswap cleanups from Yosry Ahmed in the series "zswap
     same-filled and limit checking cleanups".

   - Matthew Wilcox has been looking at buffer_head code and found the
     documentation to be lacking. The series is "Improve buffer head
     documentation".

   - Multi-size THPs get more work, this time from Lance Yang. His
     series "mm/madvise: enhance lazyfreeing with mTHP in madvise_free"
     optimizes the freeing of these things.

   - Kemeng Shi has added more userspace-visible writeback
     instrumentation in the series "Improve visibility of writeback".

   - Kemeng Shi then sent some maintenance work on top in the series
     "Fix and cleanups to page-writeback".

   - Matthew Wilcox reduces mmap_lock traffic in the anon vma code in
     the series "Improve anon_vma scalability for anon VMAs". Intel's
     test bot reported an improbable 3x improvement in one test.

   - SeongJae Park adds some DAMON feature work in the series
	"mm/damon: add a DAMOS filter type for page granularity access recheck"
	"selftests/damon: add DAMOS quota goal test"

   - Also some maintenance work in the series
	"mm/damon/paddr: simplify page level access re-check for pageout"
	"mm/damon: misc fixes and improvements"

   - David Hildenbrand has disabled some known-to-fail selftests ni the
     series "selftests: mm: cow: flag vmsplice() hugetlb tests as
     XFAIL".

   - memcg metadata storage optimizations from Shakeel Butt in "memcg:
     reduce memory consumption by memcg stats".

   - DAX fixes and maintenance work from Vishal Verma in the series
     "dax/bus.c: Fixups for dax-bus locking""

* tag 'mm-stable-2024-05-17-19-19' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm: (426 commits)
  memcg, oom: cleanup unused memcg_oom_gfp_mask and memcg_oom_order
  selftests/mm: hugetlb_madv_vs_map: avoid test skipping by querying hugepage size at runtime
  mm/hugetlb: add missing VM_FAULT_SET_HINDEX in hugetlb_wp
  mm/hugetlb: add missing VM_FAULT_SET_HINDEX in hugetlb_fault
  selftests: cgroup: add tests to verify the zswap writeback path
  mm: memcg: make alloc_mem_cgroup_per_node_info() return bool
  mm/damon/core: fix return value from damos_wmark_metric_value
  mm: do not update memcg stats for NR_{FILE/SHMEM}_PMDMAPPED
  selftests: cgroup: remove redundant enabling of memory controller
  Docs/mm/damon/maintainer-profile: allow posting patches based on damon/next tree
  Docs/mm/damon/maintainer-profile: change the maintainer's timezone from PST to PT
  Docs/mm/damon/design: use a list for supported filters
  Docs/admin-guide/mm/damon/usage: fix wrong schemes effective quota update command
  Docs/admin-guide/mm/damon/usage: fix wrong example of DAMOS filter matching sysfs file
  selftests/damon: classify tests for functionalities and regressions
  selftests/damon/_damon_sysfs: use 'is' instead of '==' for 'None'
  selftests/damon/_damon_sysfs: find sysfs mount point from /proc/mounts
  selftests/damon/_damon_sysfs: check errors from nr_schemes file reads
  mm/damon/core: initialize ->esz_bp from damos_quota_init_priv()
  selftests/damon: add a test for DAMOS quota goal
  ...
2024-05-19 09:21:03 -07:00
Linus Torvalds
ff9a79307f Kbuild updates for v6.10
- Avoid 'constexpr', which is a keyword in C23
 
  - Allow 'dtbs_check' and 'dt_compatible_check' run independently of
    'dt_binding_check'
 
  - Fix weak references to avoid GOT entries in position-independent
    code generation
 
  - Convert the last use of 'optional' property in arch/sh/Kconfig
 
  - Remove support for the 'optional' property in Kconfig
 
  - Remove support for Clang's ThinLTO caching, which does not work with
    the .incbin directive
 
  - Change the semantics of $(src) so it always points to the source
    directory, which fixes Makefile inconsistencies between upstream and
    downstream
 
  - Fix 'make tar-pkg' for RISC-V to produce a consistent package
 
  - Provide reasonable default coverage for objtool, sanitizers, and
    profilers
 
  - Remove redundant OBJECT_FILES_NON_STANDARD, KASAN_SANITIZE, etc.
 
  - Remove the last use of tristate choice in drivers/rapidio/Kconfig
 
  - Various cleanups and fixes in Kconfig
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Merge tag 'kbuild-v6.10' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild

Pull Kbuild updates from Masahiro Yamada:

 - Avoid 'constexpr', which is a keyword in C23

 - Allow 'dtbs_check' and 'dt_compatible_check' run independently of
   'dt_binding_check'

 - Fix weak references to avoid GOT entries in position-independent code
   generation

 - Convert the last use of 'optional' property in arch/sh/Kconfig

 - Remove support for the 'optional' property in Kconfig

 - Remove support for Clang's ThinLTO caching, which does not work with
   the .incbin directive

 - Change the semantics of $(src) so it always points to the source
   directory, which fixes Makefile inconsistencies between upstream and
   downstream

 - Fix 'make tar-pkg' for RISC-V to produce a consistent package

 - Provide reasonable default coverage for objtool, sanitizers, and
   profilers

 - Remove redundant OBJECT_FILES_NON_STANDARD, KASAN_SANITIZE, etc.

 - Remove the last use of tristate choice in drivers/rapidio/Kconfig

 - Various cleanups and fixes in Kconfig

* tag 'kbuild-v6.10' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild: (46 commits)
  kconfig: use sym_get_choice_menu() in sym_check_prop()
  rapidio: remove choice for enumeration
  kconfig: lxdialog: remove initialization with A_NORMAL
  kconfig: m/nconf: merge two item_add_str() calls
  kconfig: m/nconf: remove dead code to display value of bool choice
  kconfig: m/nconf: remove dead code to display children of choice members
  kconfig: gconf: show checkbox for choice correctly
  kbuild: use GCOV_PROFILE and KCSAN_SANITIZE in scripts/Makefile.modfinal
  Makefile: remove redundant tool coverage variables
  kbuild: provide reasonable defaults for tool coverage
  modules: Drop the .export_symbol section from the final modules
  kconfig: use menu_list_for_each_sym() in sym_check_choice_deps()
  kconfig: use sym_get_choice_menu() in conf_write_defconfig()
  kconfig: add sym_get_choice_menu() helper
  kconfig: turn defaults and additional prompt for choice members into error
  kconfig: turn missing prompt for choice members into error
  kconfig: turn conf_choice() into void function
  kconfig: use linked list in sym_set_changed()
  kconfig: gconf: use MENU_CHANGED instead of SYMBOL_CHANGED
  kconfig: gconf: remove debug code
  ...
2024-05-18 12:39:20 -07:00
Linus Torvalds
a49468240e Modules changes for v6.10-rc1
Finally something fun. Mike Rapoport does some cleanup to allow us to
 take out module_alloc() out of modules into a new paint shedded execmem_alloc()
 and execmem_free() so to make emphasis these helpers are actually used outside
 of modules. It starts with a no-functional changes API rename / placeholders
 to then allow architectures to define their requirements into a new shiny
 struct execmem_info with ranges, and requirements for those ranges. Archs
 now can intitialize this execmem_info as the last part of mm_core_init() if
 they have to diverge from the norm. Each range is a known type clearly
 articulated and spelled out in enum execmem_type.
 
 Although a lot of this is major cleanup and prep work for future enhancements an
 immediate clear gain is we get to enable KPROBES without MODULES now. That is
 ultimately what motiviated to pick this work up again, now with smaller goal as
 concrete stepping stone.
 
 This has been sitting on linux-next for a little less than a month, a few issues
 were found already and fixed, in particular an odd mips boot issue. Arch folks
 reviewed the code too. This is ready for wider exposure and testing.
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Merge tag 'modules-6.10-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/mcgrof/linux

Pull modules updates from Luis Chamberlain:
 "Finally something fun. Mike Rapoport does some cleanup to allow us to
  take out module_alloc() out of modules into a new paint shedded
  execmem_alloc() and execmem_free() so to make emphasis these helpers
  are actually used outside of modules.

  It starts with a non-functional changes API rename / placeholders to
  then allow architectures to define their requirements into a new shiny
  struct execmem_info with ranges, and requirements for those ranges.

  Archs now can intitialize this execmem_info as the last part of
  mm_core_init() if they have to diverge from the norm. Each range is a
  known type clearly articulated and spelled out in enum execmem_type.

  Although a lot of this is major cleanup and prep work for future
  enhancements an immediate clear gain is we get to enable KPROBES
  without MODULES now. That is ultimately what motiviated to pick this
  work up again, now with smaller goal as concrete stepping stone"

* tag 'modules-6.10-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/mcgrof/linux:
  bpf: remove CONFIG_BPF_JIT dependency on CONFIG_MODULES of
  kprobes: remove dependency on CONFIG_MODULES
  powerpc: use CONFIG_EXECMEM instead of CONFIG_MODULES where appropriate
  x86/ftrace: enable dynamic ftrace without CONFIG_MODULES
  arch: make execmem setup available regardless of CONFIG_MODULES
  powerpc: extend execmem_params for kprobes allocations
  arm64: extend execmem_info for generated code allocations
  riscv: extend execmem_params for generated code allocations
  mm/execmem, arch: convert remaining overrides of module_alloc to execmem
  mm/execmem, arch: convert simple overrides of module_alloc to execmem
  mm: introduce execmem_alloc() and execmem_free()
  module: make module_memory_{alloc,free} more self-contained
  sparc: simplify module_alloc()
  nios2: define virtual address space for modules
  mips: module: rename MODULE_START to MODULES_VADDR
  arm64: module: remove unneeded call to kasan_alloc_module_shadow()
  kallsyms: replace deprecated strncpy with strscpy
  module: allow UNUSED_KSYMS_WHITELIST to be relative against objtree.
2024-05-15 14:05:08 -07:00
Masahiro Yamada
6ffe4fdf89 kconfig: use sym_get_choice_menu() in sym_check_prop()
Choices and their members are associated via the P_CHOICE property.

Currently, prop_get_symbol(sym_get_choice_prop()) is used to obtain
the choice of the given choice member.

Replace it with sym_get_choice_menu(), which retrieves the choice
without relying on P_CHOICE.

Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
2024-05-16 03:18:41 +09:00
Linus Torvalds
1b294a1f35 Networking changes for 6.10.
Core & protocols
 ----------------
 
  - Complete rework of garbage collection of AF_UNIX sockets.
    AF_UNIX is prone to forming reference count cycles due to fd passing
    functionality. New method based on Tarjan's Strongly Connected Components
    algorithm should be both faster and remove a lot of workarounds
    we accumulated over the years.
 
  - Add TCP fraglist GRO support, allowing chaining multiple TCP packets
    and forwarding them together. Useful for small switches / routers which
    lack basic checksum offload in some scenarios (e.g. PPPoE).
 
  - Support using SMP threads for handling packet backlog i.e. packet
    processing from software interfaces and old drivers which don't
    use NAPI. This helps move the processing out of the softirq jumble.
 
  - Continue work of converting from rtnl lock to RCU protection.
    Don't require rtnl lock when reading: IPv6 routing FIB, IPv6 address
    labels, netdev threaded NAPI sysfs files, bonding driver's sysfs files,
    MPLS devconf, IPv4 FIB rules, netns IDs, tcp metrics, TC Qdiscs,
    neighbor entries, ARP entries via ioctl(SIOCGARP), a lot of the link
    information available via rtnetlink.
 
  - Small optimizations from Eric to UDP wake up handling, memory accounting,
    RPS/RFS implementation, TCP packet sizing etc.
 
  - Allow direct page recycling in the bulk API used by XDP, for +2% PPS.
 
  - Support peek with an offset on TCP sockets.
 
  - Add MPTCP APIs for querying last time packets were received/sent/acked,
    and whether MPTCP "upgrade" succeeded on a TCP socket.
 
  - Add intra-node communication shortcut to improve SMC performance.
 
  - Add IPv6 (and IPv{4,6}-over-IPv{4,6}) support to the GTP protocol driver.
 
  - Add HSR-SAN (RedBOX) mode of operation to the HSR protocol driver.
 
  - Add reset reasons for tracing what caused a TCP reset to be sent.
 
  - Introduce direction attribute for xfrm (IPSec) states.
    State can be used either for input or output packet processing.
 
 Things we sprinkled into general kernel code
 --------------------------------------------
 
  - Add bitmap_{read,write}(), bitmap_size(), expose BYTES_TO_BITS().
    This required touch-ups and renaming of a few existing users.
 
  - Add Endian-dependent __counted_by_{le,be} annotations.
 
  - Make building selftests "quieter" by printing summaries like
    "CC object.o" rather than full commands with all the arguments.
 
 Netfilter
 ---------
 
  - Use GFP_KERNEL to clone elements, to deal better with OOM situations
    and avoid failures in the .commit step.
 
 BPF
 ---
 
  - Add eBPF JIT for ARCv2 CPUs.
 
  - Support attaching kprobe BPF programs through kprobe_multi link in
    a session mode, meaning, a BPF program is attached to both function entry
    and return, the entry program can decide if the return program gets
    executed and the entry program can share u64 cookie value with return
    program. "Session mode" is a common use-case for tetragon and bpftrace.
 
  - Add the ability to specify and retrieve BPF cookie for raw tracepoint
    programs in order to ease migration from classic to raw tracepoints.
 
  - Add an internal-only BPF per-CPU instruction for resolving per-CPU
    memory addresses and implement support in x86, ARM64 and RISC-V JITs.
    This allows inlining functions which need to access per-CPU state.
 
  - Optimize x86 BPF JIT's emit_mov_imm64, and add support for various
    atomics in bpf_arena which can be JITed as a single x86 instruction.
    Support BPF arena on ARM64.
 
  - Add a new bpf_wq API for deferring events and refactor process-context
    bpf_timer code to keep common code where possible.
 
  - Harden the BPF verifier's and/or/xor value tracking.
 
  - Introduce crypto kfuncs to let BPF programs call kernel crypto APIs.
 
  - Support bpf_tail_call_static() helper for BPF programs with GCC 13.
 
  - Add bpf_preempt_{disable,enable}() kfuncs in order to allow a BPF
    program to have code sections where preemption is disabled.
 
 Driver API
 ----------
 
  - Skip software TC processing completely if all installed rules are
    marked as HW-only, instead of checking the HW-only flag rule by rule.
 
  - Add support for configuring PoE (Power over Ethernet), similar to
    the already existing support for PoDL (Power over Data Line) config.
 
  - Initial bits of a queue control API, for now allowing a single queue
    to be reset without disturbing packet flow to other queues.
 
  - Common (ethtool) statistics for hardware timestamping.
 
 Tests and tooling
 -----------------
 
  - Remove the need to create a config file to run the net forwarding tests
    so that a naive "make run_tests" can exercise them.
 
  - Define a method of writing tests which require an external endpoint
    to communicate with (to send/receive data towards the test machine).
    Add a few such tests.
 
  - Create a shared code library for writing Python tests. Expose the YAML
    Netlink library from tools/ to the tests for easy Netlink access.
 
  - Move netfilter tests under net/, extend them, separate performance tests
    from correctness tests, and iron out issues found by running them
    "on every commit".
 
  - Refactor BPF selftests to use common network helpers.
 
  - Further work filling in YAML definitions of Netlink messages for:
    nftables, team driver, bonding interfaces, vlan interfaces, VF info,
    TC u32 mark, TC police action.
 
  - Teach Python YAML Netlink to decode attribute policies.
 
  - Extend the definition of the "indexed array" construct in the specs
    to cover arrays of scalars rather than just nests.
 
  - Add hyperlinks between definitions in generated Netlink docs.
 
 Drivers
 -------
 
  - Make sure unsupported flower control flags are rejected by drivers,
    and make more drivers report errors directly to the application rather
    than dmesg (large number of driver changes from Asbjørn Sloth Tønnesen).
 
  - Ethernet high-speed NICs:
    - Broadcom (bnxt):
      - support multiple RSS contexts and steering traffic to them
      - support XDP metadata
      - make page pool allocations more NUMA aware
    - Intel (100G, ice, idpf):
      - extract datapath code common among Intel drivers into a library
      - use fewer resources in switchdev by sharing queues with the PF
      - add PFCP filter support
      - add Ethernet filter support
      - use a spinlock instead of HW lock in PTP clock ops
      - support 5 layer Tx scheduler topology
    - nVidia/Mellanox:
      - 800G link modes and 100G SerDes speeds
      - per-queue IRQ coalescing configuration
    - Marvell Octeon:
      - support offloading TC packet mark action
 
  - Ethernet NICs consumer, embedded and virtual:
    - stop lying about skb->truesize in USB Ethernet drivers, it messes up
      TCP memory calculations
    - Google cloud vNIC:
      - support changing ring size via ethtool
      - support ring reset using the queue control API
    - VirtIO net:
      - expose flow hash from RSS to XDP
      - per-queue statistics
      - add selftests
    - Synopsys (stmmac):
      - support controllers which require an RX clock signal from the MII
        bus to perform their hardware initialization
    - TI:
      - icssg_prueth: support ICSSG-based Ethernet on AM65x SR1.0 devices
      - icssg_prueth: add SW TX / RX Coalescing based on hrtimers
      - cpsw: minimal XDP support
    - Renesas (ravb):
      - support describing the MDIO bus
    - Realtek (r8169):
      - add support for RTL8168M
    - Microchip Sparx5:
      - matchall and flower actions mirred and redirect
 
  - Ethernet switches:
    - nVidia/Mellanox:
      - improve events processing performance
    - Marvell:
      - add support for MV88E6250 family internal PHYs
    - Microchip:
      - add DCB and DSCP mapping support for KSZ switches
      - vsc73xx: convert to PHYLINK
    - Realtek:
      - rtl8226b/rtl8221b: add C45 instances and SerDes switching
 
  - Many driver changes related to PHYLIB and PHYLINK deprecated API cleanup.
 
  - Ethernet PHYs:
    - Add a new driver for Airoha EN8811H 2.5 Gigabit PHY.
    - micrel: lan8814: add support for PPS out and external timestamp trigger
 
  - WiFi:
    - Disable Wireless Extensions (WEXT) in all Wi-Fi 7 devices drivers.
      Modern devices can only be configured using nl80211.
    - mac80211/cfg80211
      - handle color change per link for WiFi 7 Multi-Link Operation
    - Intel (iwlwifi):
      - don't support puncturing in 5 GHz
      - support monitor mode on passive channels
      - BZ-W device support
      - P2P with HE/EHT support
      - re-add support for firmware API 90
      - provide channel survey information for Automatic Channel Selection
    - MediaTek (mt76):
      - mt7921 LED control
      - mt7925 EHT radiotap support
      - mt7920e PCI support
    - Qualcomm (ath11k):
      - P2P support for QCA6390, WCN6855 and QCA2066
      - support hibernation
      - ieee80211-freq-limit Device Tree property support
    - Qualcomm (ath12k):
      - refactoring in preparation of multi-link support
      - suspend and hibernation support
      - ACPI support
      - debugfs support, including dfs_simulate_radar support
    - RealTek:
      - rtw88: RTL8723CS SDIO device support
      - rtw89: RTL8922AE Wi-Fi 7 PCI device support
      - rtw89: complete features of new WiFi 7 chip 8922AE including
        BT-coexistence and Wake-on-WLAN
      - rtw89: use BIOS ACPI settings to set TX power and channels
      - rtl8xxxu: enable Management Frame Protection (MFP) support
 
  - Bluetooth:
    - support for Intel BlazarI and Filmore Peak2 (BE201)
    - support for MediaTek MT7921S SDIO
    - initial support for Intel PCIe BT driver
    - remove HCI_AMP support
 
 Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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Merge tag 'net-next-6.10' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next

Pull networking updates from Jakub Kicinski:
 "Core & protocols:

   - Complete rework of garbage collection of AF_UNIX sockets.

     AF_UNIX is prone to forming reference count cycles due to fd
     passing functionality. New method based on Tarjan's Strongly
     Connected Components algorithm should be both faster and remove a
     lot of workarounds we accumulated over the years.

   - Add TCP fraglist GRO support, allowing chaining multiple TCP
     packets and forwarding them together. Useful for small switches /
     routers which lack basic checksum offload in some scenarios (e.g.
     PPPoE).

   - Support using SMP threads for handling packet backlog i.e. packet
     processing from software interfaces and old drivers which don't use
     NAPI. This helps move the processing out of the softirq jumble.

   - Continue work of converting from rtnl lock to RCU protection.

     Don't require rtnl lock when reading: IPv6 routing FIB, IPv6
     address labels, netdev threaded NAPI sysfs files, bonding driver's
     sysfs files, MPLS devconf, IPv4 FIB rules, netns IDs, tcp metrics,
     TC Qdiscs, neighbor entries, ARP entries via ioctl(SIOCGARP), a lot
     of the link information available via rtnetlink.

   - Small optimizations from Eric to UDP wake up handling, memory
     accounting, RPS/RFS implementation, TCP packet sizing etc.

   - Allow direct page recycling in the bulk API used by XDP, for +2%
     PPS.

   - Support peek with an offset on TCP sockets.

   - Add MPTCP APIs for querying last time packets were received/sent/acked
     and whether MPTCP "upgrade" succeeded on a TCP socket.

   - Add intra-node communication shortcut to improve SMC performance.

   - Add IPv6 (and IPv{4,6}-over-IPv{4,6}) support to the GTP protocol
     driver.

   - Add HSR-SAN (RedBOX) mode of operation to the HSR protocol driver.

   - Add reset reasons for tracing what caused a TCP reset to be sent.

   - Introduce direction attribute for xfrm (IPSec) states. State can be
     used either for input or output packet processing.

  Things we sprinkled into general kernel code:

   - Add bitmap_{read,write}(), bitmap_size(), expose BYTES_TO_BITS().

     This required touch-ups and renaming of a few existing users.

   - Add Endian-dependent __counted_by_{le,be} annotations.

   - Make building selftests "quieter" by printing summaries like
     "CC object.o" rather than full commands with all the arguments.

  Netfilter:

   - Use GFP_KERNEL to clone elements, to deal better with OOM
     situations and avoid failures in the .commit step.

  BPF:

   - Add eBPF JIT for ARCv2 CPUs.

   - Support attaching kprobe BPF programs through kprobe_multi link in
     a session mode, meaning, a BPF program is attached to both function
     entry and return, the entry program can decide if the return
     program gets executed and the entry program can share u64 cookie
     value with return program. "Session mode" is a common use-case for
     tetragon and bpftrace.

   - Add the ability to specify and retrieve BPF cookie for raw
     tracepoint programs in order to ease migration from classic to raw
     tracepoints.

   - Add an internal-only BPF per-CPU instruction for resolving per-CPU
     memory addresses and implement support in x86, ARM64 and RISC-V
     JITs. This allows inlining functions which need to access per-CPU
     state.

   - Optimize x86 BPF JIT's emit_mov_imm64, and add support for various
     atomics in bpf_arena which can be JITed as a single x86
     instruction. Support BPF arena on ARM64.

   - Add a new bpf_wq API for deferring events and refactor
     process-context bpf_timer code to keep common code where possible.

   - Harden the BPF verifier's and/or/xor value tracking.

   - Introduce crypto kfuncs to let BPF programs call kernel crypto
     APIs.

   - Support bpf_tail_call_static() helper for BPF programs with GCC 13.

   - Add bpf_preempt_{disable,enable}() kfuncs in order to allow a BPF
     program to have code sections where preemption is disabled.

  Driver API:

   - Skip software TC processing completely if all installed rules are
     marked as HW-only, instead of checking the HW-only flag rule by
     rule.

   - Add support for configuring PoE (Power over Ethernet), similar to
     the already existing support for PoDL (Power over Data Line)
     config.

   - Initial bits of a queue control API, for now allowing a single
     queue to be reset without disturbing packet flow to other queues.

   - Common (ethtool) statistics for hardware timestamping.

  Tests and tooling:

   - Remove the need to create a config file to run the net forwarding
     tests so that a naive "make run_tests" can exercise them.

   - Define a method of writing tests which require an external endpoint
     to communicate with (to send/receive data towards the test
     machine). Add a few such tests.

   - Create a shared code library for writing Python tests. Expose the
     YAML Netlink library from tools/ to the tests for easy Netlink
     access.

   - Move netfilter tests under net/, extend them, separate performance
     tests from correctness tests, and iron out issues found by running
     them "on every commit".

   - Refactor BPF selftests to use common network helpers.

   - Further work filling in YAML definitions of Netlink messages for:
     nftables, team driver, bonding interfaces, vlan interfaces, VF
     info, TC u32 mark, TC police action.

   - Teach Python YAML Netlink to decode attribute policies.

   - Extend the definition of the "indexed array" construct in the specs
     to cover arrays of scalars rather than just nests.

   - Add hyperlinks between definitions in generated Netlink docs.

  Drivers:

   - Make sure unsupported flower control flags are rejected by drivers,
     and make more drivers report errors directly to the application
     rather than dmesg (large number of driver changes from Asbjørn
     Sloth Tønnesen).

   - Ethernet high-speed NICs:
      - Broadcom (bnxt):
         - support multiple RSS contexts and steering traffic to them
         - support XDP metadata
         - make page pool allocations more NUMA aware
      - Intel (100G, ice, idpf):
         - extract datapath code common among Intel drivers into a library
         - use fewer resources in switchdev by sharing queues with the PF
         - add PFCP filter support
         - add Ethernet filter support
         - use a spinlock instead of HW lock in PTP clock ops
         - support 5 layer Tx scheduler topology
      - nVidia/Mellanox:
         - 800G link modes and 100G SerDes speeds
         - per-queue IRQ coalescing configuration
      - Marvell Octeon:
         - support offloading TC packet mark action

   - Ethernet NICs consumer, embedded and virtual:
      - stop lying about skb->truesize in USB Ethernet drivers, it
        messes up TCP memory calculations
      - Google cloud vNIC:
         - support changing ring size via ethtool
         - support ring reset using the queue control API
      - VirtIO net:
         - expose flow hash from RSS to XDP
         - per-queue statistics
         - add selftests
      - Synopsys (stmmac):
         - support controllers which require an RX clock signal from the
           MII bus to perform their hardware initialization
      - TI:
         - icssg_prueth: support ICSSG-based Ethernet on AM65x SR1.0 devices
         - icssg_prueth: add SW TX / RX Coalescing based on hrtimers
         - cpsw: minimal XDP support
      - Renesas (ravb):
         - support describing the MDIO bus
      - Realtek (r8169):
         - add support for RTL8168M
      - Microchip Sparx5:
         - matchall and flower actions mirred and redirect

   - Ethernet switches:
      - nVidia/Mellanox:
         - improve events processing performance
      - Marvell:
         - add support for MV88E6250 family internal PHYs
      - Microchip:
         - add DCB and DSCP mapping support for KSZ switches
         - vsc73xx: convert to PHYLINK
      - Realtek:
         - rtl8226b/rtl8221b: add C45 instances and SerDes switching

   - Many driver changes related to PHYLIB and PHYLINK deprecated API
     cleanup

   - Ethernet PHYs:
      - Add a new driver for Airoha EN8811H 2.5 Gigabit PHY.
      - micrel: lan8814: add support for PPS out and external timestamp trigger

   - WiFi:
      - Disable Wireless Extensions (WEXT) in all Wi-Fi 7 devices
        drivers. Modern devices can only be configured using nl80211.
      - mac80211/cfg80211
         - handle color change per link for WiFi 7 Multi-Link Operation
      - Intel (iwlwifi):
         - don't support puncturing in 5 GHz
         - support monitor mode on passive channels
         - BZ-W device support
         - P2P with HE/EHT support
         - re-add support for firmware API 90
         - provide channel survey information for Automatic Channel Selection
      - MediaTek (mt76):
         - mt7921 LED control
         - mt7925 EHT radiotap support
         - mt7920e PCI support
      - Qualcomm (ath11k):
         - P2P support for QCA6390, WCN6855 and QCA2066
         - support hibernation
         - ieee80211-freq-limit Device Tree property support
      - Qualcomm (ath12k):
         - refactoring in preparation of multi-link support
         - suspend and hibernation support
         - ACPI support
         - debugfs support, including dfs_simulate_radar support
      - RealTek:
         - rtw88: RTL8723CS SDIO device support
         - rtw89: RTL8922AE Wi-Fi 7 PCI device support
         - rtw89: complete features of new WiFi 7 chip 8922AE including
           BT-coexistence and Wake-on-WLAN
         - rtw89: use BIOS ACPI settings to set TX power and channels
         - rtl8xxxu: enable Management Frame Protection (MFP) support

   - Bluetooth:
      - support for Intel BlazarI and Filmore Peak2 (BE201)
      - support for MediaTek MT7921S SDIO
      - initial support for Intel PCIe BT driver
      - remove HCI_AMP support"

* tag 'net-next-6.10' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next: (1827 commits)
  selftests: netfilter: fix packetdrill conntrack testcase
  net: gro: fix napi_gro_cb zeroed alignment
  Bluetooth: btintel_pcie: Refactor and code cleanup
  Bluetooth: btintel_pcie: Fix warning reported by sparse
  Bluetooth: hci_core: Fix not handling hdev->le_num_of_adv_sets=1
  Bluetooth: btintel: Fix compiler warning for multi_v7_defconfig config
  Bluetooth: btintel_pcie: Fix compiler warnings
  Bluetooth: btintel_pcie: Add *setup* function to download firmware
  Bluetooth: btintel_pcie: Add support for PCIe transport
  Bluetooth: btintel: Export few static functions
  Bluetooth: HCI: Remove HCI_AMP support
  Bluetooth: L2CAP: Fix div-by-zero in l2cap_le_flowctl_init()
  Bluetooth: qca: Fix error code in qca_read_fw_build_info()
  Bluetooth: hci_conn: Use __counted_by() and avoid -Wfamnae warning
  Bluetooth: btintel: Add support for Filmore Peak2 (BE201)
  Bluetooth: btintel: Add support for BlazarI
  LE Create Connection command timeout increased to 20 secs
  dt-bindings: net: bluetooth: Add MediaTek MT7921S SDIO Bluetooth
  Bluetooth: compute LE flow credits based on recvbuf space
  Bluetooth: hci_sync: Use cmd->num_cis instead of magic number
  ...
2024-05-14 19:42:24 -07:00
Linus Torvalds
103916ffe2 arm64 updates for 6.10
ACPI:
 * Support for the Firmware ACPI Control Structure (FACS) signature
   feature which is used to reboot out of hibernation on some systems.
 
 Kbuild:
 * Support for building Flat Image Tree (FIT) images, where the kernel
   Image is compressed alongside a set of devicetree blobs.
 
 Memory management:
 * Optimisation of our early page-table manipulation for creation of the
   linear mapping.
 
 * Support for userfaultfd write protection, which brings along some nice
   cleanups to our handling of invalid but present ptes.
 
 * Extend our use of range TLBI invalidation at EL1.
 
 Perf and PMUs:
 * Ensure that the 'pmu->parent' pointer is correctly initialised by PMU
   drivers.
 
 * Avoid allocating 'cpumask_t' types on the stack in some PMU drivers.
 
 * Fix parsing of the CPU PMU "version" field in assembly code, as it
   doesn't follow the usual architectural rules.
 
 * Add best-effort unwinding support for USER_STACKTRACE
 
 * Minor driver fixes and cleanups.
 
 Selftests:
 * Minor cleanups to the arm64 selftests (missing NULL check, unused
   variable).
 
 Miscellaneous
 * Add a command-line alias for disabling 32-bit application support.
 
 * Add part number for Neoverse-V2 CPUs.
 
 * Minor fixes and cleanups.
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Merge tag 'arm64-upstream' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux

Pull arm64 updates from Will Deacon:
 "The most interesting parts are probably the mm changes from Ryan which
  optimise the creation of the linear mapping at boot and (separately)
  implement write-protect support for userfaultfd.

  Outside of our usual directories, the Kbuild-related changes under
  scripts/ have been acked by Masahiro whilst the drivers/acpi/ parts
  have been acked by Rafael and the addition of cpumask_any_and_but()
  has been acked by Yury.

  ACPI:

   - Support for the Firmware ACPI Control Structure (FACS) signature
     feature which is used to reboot out of hibernation on some systems

  Kbuild:

   - Support for building Flat Image Tree (FIT) images, where the kernel
     Image is compressed alongside a set of devicetree blobs

  Memory management:

   - Optimisation of our early page-table manipulation for creation of
     the linear mapping

   - Support for userfaultfd write protection, which brings along some
     nice cleanups to our handling of invalid but present ptes

   - Extend our use of range TLBI invalidation at EL1

  Perf and PMUs:

   - Ensure that the 'pmu->parent' pointer is correctly initialised by
     PMU drivers

   - Avoid allocating 'cpumask_t' types on the stack in some PMU drivers

   - Fix parsing of the CPU PMU "version" field in assembly code, as it
     doesn't follow the usual architectural rules

   - Add best-effort unwinding support for USER_STACKTRACE

   - Minor driver fixes and cleanups

  Selftests:

   - Minor cleanups to the arm64 selftests (missing NULL check, unused
     variable)

  Miscellaneous:

   - Add a command-line alias for disabling 32-bit application support

   - Add part number for Neoverse-V2 CPUs

   - Minor fixes and cleanups"

* tag 'arm64-upstream' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux: (64 commits)
  arm64/mm: Fix pud_user_accessible_page() for PGTABLE_LEVELS <= 2
  arm64/mm: Add uffd write-protect support
  arm64/mm: Move PTE_PRESENT_INVALID to overlay PTE_NG
  arm64/mm: Remove PTE_PROT_NONE bit
  arm64/mm: generalize PMD_PRESENT_INVALID for all levels
  arm64: simplify arch_static_branch/_jump function
  arm64: Add USER_STACKTRACE support
  arm64: Add the arm64.no32bit_el0 command line option
  drivers/perf: hisi: hns3: Actually use devm_add_action_or_reset()
  drivers/perf: hisi: hns3: Fix out-of-bound access when valid event group
  drivers/perf: hisi_pcie: Fix out-of-bound access when valid event group
  kselftest: arm64: Add a null pointer check
  arm64: defer clearing DAIF.D
  arm64: assembler: update stale comment for disable_step_tsk
  arm64/sysreg: Update PIE permission encodings
  kselftest/arm64: Remove unused parameters in abi test
  perf/arm-spe: Assign parents for event_source device
  perf/arm-smmuv3: Assign parents for event_source device
  perf/arm-dsu: Assign parents for event_source device
  perf/arm-dmc620: Assign parents for event_source device
  ...
2024-05-14 11:09:39 -07:00
Linus Torvalds
6bfd2d442a Updates for the interrupt subsystem:
- Core code:
 
    - Interrupt storm detection for the lockup watchdog:
 
      Lockups which are caused by interrupt storms are not easy to debug
      because there is no information about the events which make the lockup
      detector trigger.
 
      To make this more user friendly, provide an extenstion to interrupt
      statistics which allows to take snapshots and an interface to retrieve
      the delta to the snapshot. Use this new mechanism in the watchdog code
      to do a two stage lockup analysis by taking the snapshot and printing
      the deltas for the topmost active interrupts on the second trigger.
 
      Note: This contains both the interrupt and the watchdog changes as
      the latter depend on the former obviously.
 
   - Avoid summation loops in the /proc/interrupts output and use the global
     counter when possible
 
   - Skip suspended interrupts on CPU hotplug operations to ensure that they
     are not delivered before the system resumes the device drivers when
     coming out of suspend.
 
   - On CPU hot-unplug interrupts which are affine to the outgoing CPU are
     migrated to a different CPU in the affinity mask. This can fail when
     the CPUs have no vectors left. Instead of giving up try to migrate it
     to any online CPU and thereby breaking the affinity setting in order to
     prevent a stale device interrupt which targets an offline CPU
 
   - The usual small cleanups
 
  - Driver code:
 
   - Support for the RISCV AIA MSI controller
 
   - Make the interrupt allocation for the Loongson PCH controller more
     flexible to prevent vector exhaustion
 
   - The usual set of cleanups and fixes all over the place
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Merge tag 'irq-core-2024-05-12' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

Pull interrupt subsystem updates from Thomas Gleixner:
 "Core code:

   - Interrupt storm detection for the lockup watchdog:

     Lockups which are caused by interrupt storms are not easy to debug
     because there is no information about the events which make the
     lockup detector trigger.

     To make this more user friendly, provide an extenstion to interrupt
     statistics which allows to take snapshots and an interface to
     retrieve the delta to the snapshot. Use this new mechanism in the
     watchdog code to do a two stage lockup analysis by taking the
     snapshot and printing the deltas for the topmost active interrupts
     on the second trigger.

     Note: This contains both the interrupt and the watchdog changes as
     the latter depend on the former obviously.

   - Avoid summation loops in the /proc/interrupts output and use the
     global counter when possible

   - Skip suspended interrupts on CPU hotplug operations to ensure that
     they are not delivered before the system resumes the device drivers
     when coming out of suspend.

   - On CPU hot-unplug interrupts which are affine to the outgoing CPU
     are migrated to a different CPU in the affinity mask. This can fail
     when the CPUs have no vectors left. Instead of giving up try to
     migrate it to any online CPU and thereby breaking the affinity
     setting in order to prevent a stale device interrupt which targets
     an offline CPU

   - The usual small cleanups

  Driver code:

   - Support for the RISCV AIA MSI controller

   - Make the interrupt allocation for the Loongson PCH controller more
     flexible to prevent vector exhaustion

   - The usual set of cleanups and fixes all over the place"

* tag 'irq-core-2024-05-12' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (51 commits)
  irqchip/gic-v3-its: Remove BUG_ON in its_vpe_irq_domain_alloc
  cpuidle: Avoid explicit cpumask allocation on stack
  irqchip/sifive-plic: Avoid explicit cpumask allocation on stack
  irqchip/riscv-aplic-direct: Avoid explicit cpumask allocation on stack
  irqchip/loongson-eiointc: Avoid explicit cpumask allocation on stack
  irqchip/gic-v3-its: Avoid explicit cpumask allocation on stack
  irqchip/irq-bcm6345-l1: Avoid explicit cpumask allocation on stack
  cpumask: Introduce cpumask_first_and_and()
  irqchip/irq-brcmstb-l2: Avoid saving mask on shutdown
  genirq: Reuse irq_is_nmi()
  genirq/cpuhotplug: Retry with cpu_online_mask when migration fails
  genirq/cpuhotplug: Skip suspended interrupts when restoring affinity
  arm64: dts: st: Add interrupt parent to pinctrl on stm32mp251
  arm64: dts: st: Add exti1 and exti2 nodes on stm32mp251
  ARM: dts: stm32: List exti parent interrupts on stm32mp131
  ARM: dts: stm32: List exti parent interrupts on stm32mp151
  arm64: Kconfig.platforms: Enable STM32_EXTI for ARCH_STM32
  irqchip/stm32-exti: Mark events reserved with RIF configuration check
  irqchip/stm32-exti: Skip secure events
  irqchip/stm32-exti: Convert driver to standard PM
  ...
2024-05-14 09:47:14 -07:00
Masahiro Yamada
01b9916254 kconfig: lxdialog: remove initialization with A_NORMAL
A_NORMAL is zero, so the attribute is set to the default A_NORMAL
without explicit assignment.

Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
2024-05-14 23:36:19 +09:00
Masahiro Yamada
648d82a984 kconfig: m/nconf: merge two item_add_str() calls
Just trivial cleanups.

Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
2024-05-14 23:36:19 +09:00
Masahiro Yamada
cc3e4e5e38 kconfig: m/nconf: remove dead code to display value of bool choice
Previously, optional bool choices met the following conditions
simultaneously:

 - sym_is_choice(sym)
 - sym_is_changeable(sym)
 - type == S_BOOLEAN

It no longer occurs since 6a1215888e ("kconfig: remove 'optional'
property support"). Remove the dead code.

Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
2024-05-14 23:36:19 +09:00
Masahiro Yamada
e89b46159c kconfig: m/nconf: remove dead code to display children of choice members
This code previously displayed child symbols of the selected choice
member.

Since commit 7e3465f63a ("kconfig: do not reparent the menu inside
a choice block"), choice members never have child symbols, therefore
this is dead code.

Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
2024-05-14 23:36:19 +09:00
Masahiro Yamada
6ba750ddeb kconfig: gconf: show checkbox for choice correctly
Currently, bool choices have a checkbox, but tristate choices do not.
It is opposite.

Bool choices should not have a checkbox, as they are fixed to 'y' since
commit 6a1215888e ("kconfig: remove 'optional' property support").
Tristate choices, however, should have a checkbox to allow users to
toggle the value.

Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
2024-05-14 23:36:19 +09:00
Masahiro Yamada
b4f944ba52 kbuild: use GCOV_PROFILE and KCSAN_SANITIZE in scripts/Makefile.modfinal
Instead of filtering out the GCOV and KCSAN flags, let's set GCOV_PROFILE
and KCSAN_SANITIZE to 'n', as in other Makefiles.

Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
Reviewed-by: Kees Cook <keescook@chromium.org>
Tested-by: Roberto Sassu <roberto.sassu@huawei.com>
2024-05-14 23:36:12 +09:00
Masahiro Yamada
7f7f6f7ad6 Makefile: remove redundant tool coverage variables
Now Kbuild provides reasonable defaults for objtool, sanitizers, and
profilers.

Remove redundant variables.

Note:

This commit changes the coverage for some objects:

  - include arch/mips/vdso/vdso-image.o into UBSAN, GCOV, KCOV
  - include arch/sparc/vdso/vdso-image-*.o into UBSAN
  - include arch/sparc/vdso/vma.o into UBSAN
  - include arch/x86/entry/vdso/extable.o into KASAN, KCSAN, UBSAN, GCOV, KCOV
  - include arch/x86/entry/vdso/vdso-image-*.o into KASAN, KCSAN, UBSAN, GCOV, KCOV
  - include arch/x86/entry/vdso/vdso32-setup.o into KASAN, KCSAN, UBSAN, GCOV, KCOV
  - include arch/x86/entry/vdso/vma.o into GCOV, KCOV
  - include arch/x86/um/vdso/vma.o into KASAN, GCOV, KCOV

I believe these are positive effects because all of them are kernel
space objects.

Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
Reviewed-by: Kees Cook <keescook@chromium.org>
Tested-by: Roberto Sassu <roberto.sassu@huawei.com>
2024-05-14 23:35:48 +09:00
Masahiro Yamada
9c2d1328f8 kbuild: provide reasonable defaults for tool coverage
The objtool, sanitizers (KASAN, UBSAN, etc.), and profilers (GCOV, etc.)
are intended only for kernel space objects.

For instance, the following are not kernel objects, and therefore should
opt out of coverage:

  - vDSO
  - purgatory
  - bootloader (arch/*/boot/)

However, to exclude these from coverage, you need to explicitly set
OBJECT_FILES_NON_STNDARD=y, KASAN_SANITIZE=n, etc.

Kbuild can achieve this without relying on such variables because
objects not directly linked to vmlinux or modules are considered
"non-standard objects".

Detecting standard objects is straightforward:

  - objects added to obj-y or lib-y are linked to vmlinux
  - objects added to obj-m are linked to modules

There are some exceptional Makefiles (e.g., arch/s390/boot/Makefile,
arch/xtensa/boot/lib/Makefile) that use obj-y or lib-y for non-kernel
space objects, but they can be fixed later if necessary.

Going forward, objects that are not listed in obj-y, lib-y, or obj-m
will opt out of objtool, sanitizers, and profilers by default.

You can still override the Kbuild decision by explicitly specifying
OBJECT_FILES_NON_STANDARD, KASAN_SANITIZE, etc. but most of such Make
variables can be removed.

The next commit will clean up redundant variables.

Note:

This commit changes the coverage for some objects:

  - exclude .vmlinux.export.o from UBSAN, KCOV
  - exclude arch/csky/kernel/vdso/vgettimeofday.o from UBSAN
  - exclude arch/parisc/kernel/vdso32/vdso32.so from UBSAN
  - exclude arch/parisc/kernel/vdso64/vdso64.so from UBSAN
  - exclude arch/x86/um/vdso/um_vdso.o from UBSAN
  - exclude drivers/misc/lkdtm/rodata.o from UBSAN, KCOV
  - exclude init/version-timestamp.o from UBSAN, KCOV
  - exclude lib/test_fortify/*.o from all santizers and profilers

I believe these are positive effects.

Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
Reviewed-by: Kees Cook <keescook@chromium.org>
Tested-by: Roberto Sassu <roberto.sassu@huawei.com>
2024-05-14 23:33:51 +09:00
Jens Remus
fc2f5f10f9 s390/vdso: Create .build-id links for unstripped vdso files
Citing Andy Lutomirski from commit dda1e95cee ("x86/vdso: Create
.build-id links for unstripped vdso files"):

"With this change, doing 'make vdso_install' and telling gdb:

set debug-file-directory /lib/modules/KVER/vdso

will enable vdso debugging with symbols.  This is useful for
testing, but kernel RPM builds will probably want to manually delete
these symlinks or otherwise do something sensible when they strip
the vdso/*.so files."

Fixes: 4bff8cb545 ("s390: convert to GENERIC_VDSO")
Signed-off-by: Jens Remus <jremus@linux.ibm.com>
Signed-off-by: Alexander Gordeev <agordeev@linux.ibm.com>
2024-05-14 13:37:06 +02:00
Yifan Hong
8d0b728840 module: allow UNUSED_KSYMS_WHITELIST to be relative against objtree.
If UNUSED_KSYMS_WHITELIST is a file generated
before Kbuild runs, and the source tree is in
a read-only filesystem, the developer must put
the file somewhere and specify an absolute
path to UNUSED_KSYMS_WHITELIST. This worked,
but if IKCONFIG=y, an absolute path is embedded
into .config and eventually into vmlinux, causing
the build to be less reproducible when building
on a different machine.

This patch makes the handling of
UNUSED_KSYMS_WHITELIST to be similar to
MODULE_SIG_KEY.

First, check if UNUSED_KSYMS_WHITELIST is an
absolute path, just as before this patch. If so,
use the path as is.

If it is a relative path, use wildcard to check
the existence of the file below objtree first.
If it does not exist, fall back to the original
behavior of adding $(srctree)/ before the value.

After this patch, the developer can put the generated
file in objtree, then use a relative path against
objtree in .config, eradicating any absolute paths
that may be evaluated differently on different machines.

Signed-off-by: Yifan Hong <elsk@google.com>
Reviewed-by: Elliot Berman <quic_eberman@quicinc.com>
Signed-off-by: Luis Chamberlain <mcgrof@kernel.org>
2024-05-14 00:31:43 -07:00
Wang Yao
8fe51b45c5 modules: Drop the .export_symbol section from the final modules
Commit ddb5cdbafa ("kbuild: generate KSYMTAB entries by modpost")
forget drop the .export_symbol section from the final modules.

Fixes: ddb5cdbafa ("kbuild: generate KSYMTAB entries by modpost")
Signed-off-by: Wang Yao <wangyao@lemote.com>
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
2024-05-14 14:03:26 +09:00
WANG Rui
8f8d74ee11 LoongArch: rust: Switch to use built-in rustc target
This commit switches to use the LoongArch's built-in rustc target
'loongarch64-unknown-none-softfloat'. The Rust samples have been tested.

Acked-by: Miguel Ojeda <ojeda@kernel.org>
Tested-by: Miguel Ojeda <ojeda@kernel.org>
Signed-off-by: WANG Rui <wangrui@loongson.cn>
Signed-off-by: Huacai Chen <chenhuacai@loongson.cn>
2024-05-14 12:24:18 +08:00
Jakub Kicinski
6e62702feb bpf-next-for-netdev
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Merge tag 'for-netdev' of https://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next

Daniel Borkmann says:

====================
pull-request: bpf-next 2024-05-13

We've added 119 non-merge commits during the last 14 day(s) which contain
a total of 134 files changed, 9462 insertions(+), 4742 deletions(-).

The main changes are:

1) Add BPF JIT support for 32-bit ARCv2 processors, from Shahab Vahedi.

2) Add BPF range computation improvements to the verifier in particular
   around XOR and OR operators, refactoring of checks for range computation
   and relaxing MUL range computation so that src_reg can also be an unknown
   scalar, from Cupertino Miranda.

3) Add support to attach kprobe BPF programs through kprobe_multi link in
   a session mode, meaning, a BPF program is attached to both function entry
   and return, the entry program can decide if the return program gets
   executed and the entry program can share u64 cookie value with return
   program. Session mode is a common use-case for tetragon and bpftrace,
   from Jiri Olsa.

4) Fix a potential overflow in libbpf's ring__consume_n() and improve libbpf
   as well as BPF selftest's struct_ops handling, from Andrii Nakryiko.

5) Improvements to BPF selftests in context of BPF gcc backend,
   from Jose E. Marchesi & David Faust.

6) Migrate remaining BPF selftest tests from test_sock_addr.c to prog_test-
   -style in order to retire the old test, run it in BPF CI and additionally
   expand test coverage, from Jordan Rife.

7) Big batch for BPF selftest refactoring in order to remove duplicate code
   around common network helpers, from Geliang Tang.

8) Another batch of improvements to BPF selftests to retire obsolete
   bpf_tcp_helpers.h as everything is available vmlinux.h,
   from Martin KaFai Lau.

9) Fix BPF map tear-down to not walk the map twice on free when both timer
   and wq is used, from Benjamin Tissoires.

10) Fix BPF verifier assumptions about socket->sk that it can be non-NULL,
    from Alexei Starovoitov.

11) Change BTF build scripts to using --btf_features for pahole v1.26+,
    from Alan Maguire.

12) Small improvements to BPF reusing struct_size() and krealloc_array(),
    from Andy Shevchenko.

13) Fix s390 JIT to emit a barrier for BPF_FETCH instructions,
    from Ilya Leoshkevich.

14) Extend TCP ->cong_control() callback in order to feed in ack and
    flag parameters and allow write-access to tp->snd_cwnd_stamp
    from BPF program, from Miao Xu.

15) Add support for internal-only per-CPU instructions to inline
    bpf_get_smp_processor_id() helper call for arm64 and riscv64 BPF JITs,
    from Puranjay Mohan.

16) Follow-up to remove the redundant ethtool.h from tooling infrastructure,
    from Tushar Vyavahare.

17) Extend libbpf to support "module:<function>" syntax for tracing
    programs, from Viktor Malik.

* tag 'for-netdev' of https://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next: (119 commits)
  bpf: make list_for_each_entry portable
  bpf: ignore expected GCC warning in test_global_func10.c
  bpf: disable strict aliasing in test_global_func9.c
  selftests/bpf: Free strdup memory in xdp_hw_metadata
  selftests/bpf: Fix a few tests for GCC related warnings.
  bpf: avoid gcc overflow warning in test_xdp_vlan.c
  tools: remove redundant ethtool.h from tooling infra
  selftests/bpf: Expand ATTACH_REJECT tests
  selftests/bpf: Expand getsockname and getpeername tests
  sefltests/bpf: Expand sockaddr hook deny tests
  selftests/bpf: Expand sockaddr program return value tests
  selftests/bpf: Retire test_sock_addr.(c|sh)
  selftests/bpf: Remove redundant sendmsg test cases
  selftests/bpf: Migrate ATTACH_REJECT test cases
  selftests/bpf: Migrate expected_attach_type tests
  selftests/bpf: Migrate wildcard destination rewrite test
  selftests/bpf: Migrate sendmsg6 v4 mapped address tests
  selftests/bpf: Migrate sendmsg deny test cases
  selftests/bpf: Migrate WILDCARD_IP test
  selftests/bpf: Handle SYSCALL_EPERM and SYSCALL_ENOTSUPP test cases
  ...
====================

Link: https://lore.kernel.org/r/20240513134114.17575-1-daniel@iogearbox.net
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2024-05-13 16:41:10 -07:00
Linus Torvalds
8f5b5f7811 Rust changes for v6.10
The most notable change is the drop of the 'alloc' in-tree fork. This
 is nicely reflected in the diffstat as a ~10k lines drop. In turn, this
 makes the version upgrades way simpler and smaller in the future, e.g.
 the latest one in commit 56f64b3706 ("rust: upgrade to Rust 1.78.0").
 
 More importantly, this increases the chances that a newer compiler
 version just works, which in turn means supporting several compiler
 versions is easier now. Thus we will look into finally setting a minimum
 version in the near future.
 
 Toolchain and infrastructure:
 
  - Upgrade to Rust 1.78.0.
 
    This time around, due to how the kernel and Rust schedules have
    aligned, there are two upgrades in fact. These allow us to remove one
    more unstable feature ('offset_of') from the list, among other
    improvements.
 
  - Drop 'alloc' in-tree fork of the standard library crate, which means
    all the unstable features used by 'alloc' (~30 language ones, ~60
    library ones) are not a concern anymore.
 
  - Support DWARFv5 via the '-Zdwarf-version' flag.
 
  - Support zlib and zstd debuginfo compression via the
    '-Zdebuginfo-compression' flag.
 
 'kernel' crate:
 
  - Support allocation flags ('GFP_*'), particularly in 'Box' (via
    'BoxExt'), 'Vec' (via 'VecExt'), 'Arc' and 'UniqueArc', as well as in
    the 'init' module APIs.
 
  - Remove usage of the 'allocator_api' unstable feature.
 
  - Remove 'try_' prefix in allocation APIs' names.
 
  - Add 'VecExt' (an extension trait) to be able to drop the 'alloc'
    fork.
 
  - Add the '{make,to}_{upper,lower}case()' methods to 'CStr'/'CString'.
 
  - Add the 'as_ptr' method to 'ThisModule'.
 
  - Add the 'from_raw' method to 'ArcBorrow'.
 
  - Add the 'into_unique_or_drop' method to 'Arc'.
 
  - Display column number in the 'dbg!' macro output by applying the
    equivalent change done to the standard library one.
 
  - Migrate 'Work' to '#[pin_data]' thanks to the changes in the 'macros'
    crate, which allows to remove an unsafe call in its 'new' associated
    function.
 
  - Prevent namespacing issues when using the '[try_][pin_]init!' macros
    by changing the generated name of guard variables.
 
  - Make the 'get' method in 'Opaque' const.
 
  - Implement the 'Default' trait for 'LockClassKey'.
 
  - Remove unneeded 'kernel::prelude' imports from doctests.
 
  - Remove redundant imports.
 
 'macros' crate:
 
  - Add 'decl_generics' to 'parse_generics()' to support default values,
    and use that to allow them in '#[pin_data]'.
 
 Helpers:
 
  - Trivial English grammar fix.
 
 Documentation:
 
  - Add section on Rust Kselftests to the "Testing" document.
 
  - Expand the "Abstractions vs. bindings" section of the "General
    Information" document.
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Merge tag 'rust-6.10' of https://github.com/Rust-for-Linux/linux

Pull Rust updates from Miguel Ojeda:
 "The most notable change is the drop of the 'alloc' in-tree fork. This
  is nicely reflected in the diffstat as a ~10k lines drop. In turn,
  this makes the version upgrades way simpler and smaller in the future,
  e.g. the latest one in commit 56f64b3706 ("rust: upgrade to Rust
  1.78.0").

  More importantly, this increases the chances that a newer compiler
  version just works, which in turn means supporting several compiler
  versions is easier now. Thus we will look into finally setting a
  minimum version in the near future.

  Toolchain and infrastructure:

   - Upgrade to Rust 1.78.0

     This time around, due to how the kernel and Rust schedules have
     aligned, there are two upgrades in fact. These allow us to remove
     one more unstable feature ('offset_of') from the list, among other
     improvements

   - Drop 'alloc' in-tree fork of the standard library crate, which
     means all the unstable features used by 'alloc' (~30 language ones,
     ~60 library ones) are not a concern anymore

   - Support DWARFv5 via the '-Zdwarf-version' flag

   - Support zlib and zstd debuginfo compression via the
     '-Zdebuginfo-compression' flag

  'kernel' crate:

   - Support allocation flags ('GFP_*'), particularly in 'Box' (via
     'BoxExt'), 'Vec' (via 'VecExt'), 'Arc' and 'UniqueArc', as well as
     in the 'init' module APIs

   - Remove usage of the 'allocator_api' unstable feature

   - Remove 'try_' prefix in allocation APIs' names

   - Add 'VecExt' (an extension trait) to be able to drop the 'alloc'
     fork

   - Add the '{make,to}_{upper,lower}case()' methods to 'CStr'/'CString'

   - Add the 'as_ptr' method to 'ThisModule'

   - Add the 'from_raw' method to 'ArcBorrow'

   - Add the 'into_unique_or_drop' method to 'Arc'

   - Display column number in the 'dbg!' macro output by applying the
     equivalent change done to the standard library one

   - Migrate 'Work' to '#[pin_data]' thanks to the changes in the
     'macros' crate, which allows to remove an unsafe call in its 'new'
     associated function

   - Prevent namespacing issues when using the '[try_][pin_]init!'
     macros by changing the generated name of guard variables

   - Make the 'get' method in 'Opaque' const

   - Implement the 'Default' trait for 'LockClassKey'

   - Remove unneeded 'kernel::prelude' imports from doctests

   - Remove redundant imports

  'macros' crate:

   - Add 'decl_generics' to 'parse_generics()' to support default
     values, and use that to allow them in '#[pin_data]'

  Helpers:

   - Trivial English grammar fix

  Documentation:

   - Add section on Rust Kselftests to the 'Testing' document

   - Expand the 'Abstractions vs. bindings' section of the 'General
     Information' document"

* tag 'rust-6.10' of https://github.com/Rust-for-Linux/linux: (31 commits)
  rust: alloc: fix dangling pointer in VecExt<T>::reserve()
  rust: upgrade to Rust 1.78.0
  rust: kernel: remove redundant imports
  rust: sync: implement `Default` for `LockClassKey`
  docs: rust: extend abstraction and binding documentation
  docs: rust: Add instructions for the Rust kselftest
  rust: remove unneeded `kernel::prelude` imports from doctests
  rust: update `dbg!()` to format column number
  rust: helpers: Fix grammar in comment
  rust: init: change the generated name of guard variables
  rust: sync: add `Arc::into_unique_or_drop`
  rust: sync: add `ArcBorrow::from_raw`
  rust: types: Make Opaque::get const
  rust: kernel: remove usage of `allocator_api` unstable feature
  rust: init: update `init` module to take allocation flags
  rust: sync: update `Arc` and `UniqueArc` to take allocation flags
  rust: alloc: update `VecExt` to take allocation flags
  rust: alloc: introduce the `BoxExt` trait
  rust: alloc: introduce allocation flags
  rust: alloc: remove our fork of the `alloc` crate
  ...
2024-05-13 15:13:54 -07:00
Linus Torvalds
8815da98e0 Another not-too-busy cycle for documentation, including:
- Some build-system changes to detect the variable fonts installed by some
   distributions that can break the PDF build.
 
 - Various updates and additions to the Spanish, Chinese, Italian, and
   Japanese translations.
 
 - Update the stable-kernel rules to match modern practice
 
 ...and the usual array of corrections, updates, and typo fixes.
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Merge tag 'docs-6.10' of git://git.lwn.net/linux

Pull documentation updates from Jonathan Corbet:
 "Another not-too-busy cycle for documentation, including:

   - Some build-system changes to detect the variable fonts installed by
     some distributions that can break the PDF build.

   - Various updates and additions to the Spanish, Chinese, Italian, and
     Japanese translations.

   - Update the stable-kernel rules to match modern practice

  ... and the usual array of corrections, updates, and typo fixes"

* tag 'docs-6.10' of git://git.lwn.net/linux: (42 commits)
  cgroup: Add documentation for missing zswap memory.stat
  kernel-doc: Added "*" in $type_constants2 to fix 'make htmldocs' warning.
  docs:core-api: fixed typos and grammar in printk-index page
  Documentation: tracing: Fix spelling mistakes
  docs/zh_CN/rust: Update the translation of quick-start to 6.9-rc4
  docs/zh_CN/rust: Update the translation of general-information to 6.9-rc4
  docs/zh_CN/rust: Update the translation of coding-guidelines to 6.9-rc4
  docs/zh_CN/rust: Update the translation of arch-support to 6.9-rc4
  docs: stable-kernel-rules: fix typo sent->send
  docs/zh_CN: remove two inconsistent spaces
  docs: scripts/check-variable-fonts.sh: Improve commands for detection
  docs: stable-kernel-rules: create special tag to flag 'no backporting'
  docs: stable-kernel-rules: explain use of stable@kernel.org (w/o @vger.)
  docs: stable-kernel-rules: remove code-labels tags and a indention level
  docs: stable-kernel-rules: call mainline by its name and change example
  docs: stable-kernel-rules: reduce redundancy
  docs, kprobes: Add riscv as supported architecture
  Docs: typos/spelling
  docs: kernel_include.py: Cope with docutils 0.21
  docs: ja_JP/howto: Catch up update in v6.8
  ...
2024-05-13 10:51:53 -07:00
Linus Torvalds
d65e1a0f30 - Store AP Query Configuration Information in a static buffer
- Rework the AP initialization and add missing cleanups to the error path
 
 - Swap IRQ and AP bus/device registration to avoid race conditions
 
 - Export prot_virt_guest symbol
 
 - Introduce AP configuration changes notifier interface to facilitate
   modularization of the AP bus
 
 - Add CONFIG_AP kernel configuration option to allow modularization of
   the AP bus
 
 - Rework CONFIG_ZCRYPT_DEBUG kernel configuration option description and
   dependency and rename it to CONFIG_AP_DEBUG
 
 - Convert sprintf() and snprintf() to sysfs_emit() in CIO code
 
 - Adjust indentation of RELOCS command build step
 
 - Make crypto performance counters upward compatible
 
 - Convert make_page_secure() and gmap_make_secure() to use folio
 
 - Rework channel-utilization-block (CUB) handling in preparation of
   introducing additional CUBs
 
 - Use attribute groups to simplify registration, removal and extension
   of measurement-related channel-path sysfs attributes
 
 - Add a per-channel-path binary "ext_measurement" sysfs attribute that
   provides access to extended channel-path measurement data
 
 - Export measurement data for all channel-measurement-groups (CMG), not
   only for a specific ones. This enables support of new CMG data formats
   in userspace without the need for kernel changes
 
 - Add a per-channel-path sysfs attribute "speed_bps" that provides the
   operating speed in bits per second or 0 if the operating speed is not
   available
 
 - The CIO tracepoint subchannel-type field "st" is incorrectly set to
   the value of subchannel-enabled SCHIB "ena" field. Fix that
 
 - Do not forcefully limit vmemmap starting address to MAX_PHYSMEM_BITS
 
 - Consider the maximum physical address available to a DCSS segment
   (512GB) when memory layout is set up
 
 - Simplify the virtual memory layout setup by reducing the size of
   identity mapping vs vmemmap overlap
 
 - Swap vmalloc and Lowcore/Real Memory Copy areas in virtual memory.
   This will allow to place the kernel image next to kernel modules
 
 - Move everyting KASLR related from <asm/setup.h> to <asm/page.h>
 
 - Put virtual memory layout information into a structure to improve
   code generation
 
 - Currently __kaslr_offset is the kernel offset in both physical and
   virtual memory spaces. Uncouple these offsets to allow uncoupling
   of the addresses spaces
 
 - Currently the identity mapping base address is implicit and is always
   set to zero. Make it explicit by putting into __identity_base persistent
   boot variable and use it in proper context
 
 - Introduce .amode31 section start and end macros AMODE31_START and
   AMODE31_END
 
 - Introduce OS_INFO entries that do not reference any data in memory,
   but rather provide only values
 
 - Store virtual memory layout in OS_INFO. It is read out by makedumpfile,
   crash and other tools
 
 - Store virtual memory layout in VMCORE_INFO. It is read out by crash and
   other tools when /proc/kcore device is used
 
 - Create additional PT_LOAD ELF program header that covers kernel image
   only, so that vmcore tools could locate kernel text and data when virtual
   and physical memory spaces are uncoupled
 
 - Uncouple physical and virtual address spaces
 
 - Map kernel at fixed location when KASLR mode is disabled. The location is
   defined by CONFIG_KERNEL_IMAGE_BASE kernel configuration value.
 
 - Rework deployment of kernel image for both compressed and uncompressed
   variants as defined by CONFIG_KERNEL_UNCOMPRESSED kernel configuration
   value
 
 - Move .vmlinux.relocs section in front of the compressed kernel.
   The interim section rescue step is avoided as result
 
 - Correct modules thunk offset calculation when branch target is more
   than 2GB away
 
 - Kernel modules contain their own set of expoline thunks. Now that the
   kernel modules area is less than 4GB away from kernel expoline thunks,
   make modules use kernel expolines. Also make EXPOLINE_EXTERN the default
   if the compiler supports it
 
 - userfaultfd can insert shared zeropages into processes running VMs,
   but that is not allowed for s390. Fallback to allocating a fresh
   zeroed anonymous folio and insert that instead
 
 - Re-enable shared zeropages for non-PV and non-skeys KVM guests
 
 - Rename hex2bitmap() to ap_hex2bitmap() and export it for external use
 
 - Add ap_config sysfs attribute to provide the means for setting or
   displaying adapters, domains and control domains assigned to a vfio-ap
   mediated device in a single operation
 
 - Make vfio_ap_mdev_link_queue() ignore duplicate link requests
 
 - Add write support to ap_config sysfs attribute to allow atomic update
   a vfio-ap mediated device state
 
 - Document ap_config sysfs attribute
 
 - Function os_info_old_init() is expected to be called only from a regular
   kdump kernel. Enable it to be called from a stand-alone dump kernel
 
 - Address gcc -Warray-bounds warning and fix array size in struct os_info
 
 - s390 does not support SMBIOS, so drop unneeded CONFIG_DMI checks
 
 - Use unwinder instead of __builtin_return_address() with ftrace to
   prevent returning of undefined values
 
 - Sections .hash and .gnu.hash are only created when CONFIG_PIE_BUILD
   kernel is enabled. Drop these for the case CONFIG_PIE_BUILD is disabled
 
 - Compile kernel with -fPIC and link with -no-pie to allow kpatch feature
   always succeed and drop the whole CONFIG_PIE_BUILD option-enabled code
 
 - Add missing virt_to_phys() converter for VSIE facility and crypto
   control blocks
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Merge tag 's390-6.10-1' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux

Pull s390 updates from Alexander Gordeev:

 - Store AP Query Configuration Information in a static buffer

 - Rework the AP initialization and add missing cleanups to the error
   path

 - Swap IRQ and AP bus/device registration to avoid race conditions

 - Export prot_virt_guest symbol

 - Introduce AP configuration changes notifier interface to facilitate
   modularization of the AP bus

 - Add CONFIG_AP kernel configuration option to allow modularization of
   the AP bus

 - Rework CONFIG_ZCRYPT_DEBUG kernel configuration option description
   and dependency and rename it to CONFIG_AP_DEBUG

 - Convert sprintf() and snprintf() to sysfs_emit() in CIO code

 - Adjust indentation of RELOCS command build step

 - Make crypto performance counters upward compatible

 - Convert make_page_secure() and gmap_make_secure() to use folio

 - Rework channel-utilization-block (CUB) handling in preparation of
   introducing additional CUBs

 - Use attribute groups to simplify registration, removal and extension
   of measurement-related channel-path sysfs attributes

 - Add a per-channel-path binary "ext_measurement" sysfs attribute that
   provides access to extended channel-path measurement data

 - Export measurement data for all channel-measurement-groups (CMG), not
   only for a specific ones. This enables support of new CMG data
   formats in userspace without the need for kernel changes

 - Add a per-channel-path sysfs attribute "speed_bps" that provides the
   operating speed in bits per second or 0 if the operating speed is not
   available

 - The CIO tracepoint subchannel-type field "st" is incorrectly set to
   the value of subchannel-enabled SCHIB "ena" field. Fix that

 - Do not forcefully limit vmemmap starting address to MAX_PHYSMEM_BITS

 - Consider the maximum physical address available to a DCSS segment
   (512GB) when memory layout is set up

 - Simplify the virtual memory layout setup by reducing the size of
   identity mapping vs vmemmap overlap

 - Swap vmalloc and Lowcore/Real Memory Copy areas in virtual memory.
   This will allow to place the kernel image next to kernel modules

 - Move everyting KASLR related from <asm/setup.h> to <asm/page.h>

 - Put virtual memory layout information into a structure to improve
   code generation

 - Currently __kaslr_offset is the kernel offset in both physical and
   virtual memory spaces. Uncouple these offsets to allow uncoupling of
   the addresses spaces

 - Currently the identity mapping base address is implicit and is always
   set to zero. Make it explicit by putting into __identity_base
   persistent boot variable and use it in proper context

 - Introduce .amode31 section start and end macros AMODE31_START and
   AMODE31_END

 - Introduce OS_INFO entries that do not reference any data in memory,
   but rather provide only values

 - Store virtual memory layout in OS_INFO. It is read out by
   makedumpfile, crash and other tools

 - Store virtual memory layout in VMCORE_INFO. It is read out by crash
   and other tools when /proc/kcore device is used

 - Create additional PT_LOAD ELF program header that covers kernel image
   only, so that vmcore tools could locate kernel text and data when
   virtual and physical memory spaces are uncoupled

 - Uncouple physical and virtual address spaces

 - Map kernel at fixed location when KASLR mode is disabled. The
   location is defined by CONFIG_KERNEL_IMAGE_BASE kernel configuration
   value.

 - Rework deployment of kernel image for both compressed and
   uncompressed variants as defined by CONFIG_KERNEL_UNCOMPRESSED kernel
   configuration value

 - Move .vmlinux.relocs section in front of the compressed kernel. The
   interim section rescue step is avoided as result

 - Correct modules thunk offset calculation when branch target is more
   than 2GB away

 - Kernel modules contain their own set of expoline thunks. Now that the
   kernel modules area is less than 4GB away from kernel expoline
   thunks, make modules use kernel expolines. Also make EXPOLINE_EXTERN
   the default if the compiler supports it

 - userfaultfd can insert shared zeropages into processes running VMs,
   but that is not allowed for s390. Fallback to allocating a fresh
   zeroed anonymous folio and insert that instead

 - Re-enable shared zeropages for non-PV and non-skeys KVM guests

 - Rename hex2bitmap() to ap_hex2bitmap() and export it for external use

 - Add ap_config sysfs attribute to provide the means for setting or
   displaying adapters, domains and control domains assigned to a
   vfio-ap mediated device in a single operation

 - Make vfio_ap_mdev_link_queue() ignore duplicate link requests

 - Add write support to ap_config sysfs attribute to allow atomic update
   a vfio-ap mediated device state

 - Document ap_config sysfs attribute

 - Function os_info_old_init() is expected to be called only from a
   regular kdump kernel. Enable it to be called from a stand-alone dump
   kernel

 - Address gcc -Warray-bounds warning and fix array size in struct
   os_info

 - s390 does not support SMBIOS, so drop unneeded CONFIG_DMI checks

 - Use unwinder instead of __builtin_return_address() with ftrace to
   prevent returning of undefined values

 - Sections .hash and .gnu.hash are only created when CONFIG_PIE_BUILD
   kernel is enabled. Drop these for the case CONFIG_PIE_BUILD is
   disabled

 - Compile kernel with -fPIC and link with -no-pie to allow kpatch
   feature always succeed and drop the whole CONFIG_PIE_BUILD
   option-enabled code

 - Add missing virt_to_phys() converter for VSIE facility and crypto
   control blocks

* tag 's390-6.10-1' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux: (54 commits)
  Revert "s390: Relocate vmlinux ELF data to virtual address space"
  KVM: s390: vsie: Use virt_to_phys for crypto control block
  s390: Relocate vmlinux ELF data to virtual address space
  s390: Compile kernel with -fPIC and link with -no-pie
  s390: vmlinux.lds.S: Drop .hash and .gnu.hash for !CONFIG_PIE_BUILD
  s390/ftrace: Use unwinder instead of __builtin_return_address()
  s390/pci: Drop unneeded reference to CONFIG_DMI
  s390/os_info: Fix array size in struct os_info
  s390/os_info: Initialize old os_info in standalone dump kernel
  docs: Update s390 vfio-ap doc for ap_config sysfs attribute
  s390/vfio-ap: Add write support to sysfs attr ap_config
  s390/vfio-ap: Ignore duplicate link requests in vfio_ap_mdev_link_queue
  s390/vfio-ap: Add sysfs attr, ap_config, to export mdev state
  s390/ap: Externalize AP bus specific bitmap reading function
  s390/mm: Re-enable the shared zeropage for !PV and !skeys KVM guests
  mm/userfaultfd: Do not place zeropages when zeropages are disallowed
  s390/expoline: Make modules use kernel expolines
  s390/nospec: Correct modules thunk offset calculation
  s390/boot: Do not rescue .vmlinux.relocs section
  s390/boot: Rework deployment of the kernel image
  ...
2024-05-13 08:33:52 -07:00
Xining Xu
b1be5844c1 scripts: checkpatch: check unused parameters for function-like macro
If function-like macros do not utilize a parameter, it might result in a
build warning.  In our coding style guidelines, we advocate for utilizing
static inline functions to replace such macros.  This patch verifies
compliance with the new rule.

For a macro such as the one below,

 #define test(a) do { } while (0)

The test result is as follows.

 WARNING: Argument 'a' is not used in function-like macro
 #21: FILE: mm/init-mm.c:20:
 +#define test(a) do { } while (0)

 total: 0 errors, 1 warnings, 8 lines checked

Link: https://lkml.kernel.org/r/20240507032757.146386-3-21cnbao@gmail.com
Signed-off-by: Xining Xu <mac.xxn@outlook.com>
Tested-by: Barry Song <v-songbaohua@oppo.com>
Signed-off-by: Barry Song <v-songbaohua@oppo.com>
Acked-by: Joe Perches <joe@perches.com>
Cc: Chris Zankel <chris@zankel.net>
Cc: Huacai Chen <chenhuacai@loongson.cn>
Cc: Herbert Xu <herbert@gondor.apana.org.au>
Cc: Guenter Roeck <linux@roeck-us.net>
Cc: Stephen Rothwell <sfr@canb.auug.org.au>
Cc: Mark Brown <broonie@kernel.org>
Cc: Andy Whitcroft <apw@canonical.com>
Cc: Dwaipayan Ray <dwaipayanray1@gmail.com>
Cc: Jonathan Corbet <corbet@lwn.net>
Cc: Lukas Bulwahn <lukas.bulwahn@gmail.com>
Cc: Max Filippov <jcmvbkbc@gmail.com>
Cc: Jeff Johnson <quic_jjohnson@quicinc.com>
Cc: Charlemagne Lasse <charlemagnelasse@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
2024-05-11 15:51:44 -07:00
Alan Maguire
fcd1ed89a0 kbuild,bpf: Switch to using --btf_features for pahole v1.26 and later
The btf_features list can be used for pahole v1.26 and later -
it is useful because if a feature is not yet implemented it will
not exit with a failure message.  This will allow us to add feature
requests to the pahole options without having to check pahole versions
in future; if the version of pahole supports the feature it will be
added.

Signed-off-by: Alan Maguire <alan.maguire@oracle.com>
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Tested-by: Eduard Zingerman <eddyz87@gmail.com>
Acked-by: Andrii Nakryiko <andrii@kernel.org>
Link: https://lore.kernel.org/bpf/20240507135514.490467-1-alan.maguire@oracle.com
2024-05-09 14:44:35 -07:00
Masahiro Yamada
dfff05cc10 kconfig: use menu_list_for_each_sym() in sym_check_choice_deps()
Choices and their members are associated via the P_CHOICE property.

Currently, sym_get_choice_prop() and expr_list_for_each_sym() are
used to iterate on choice members.

Replace them with menu_for_each_sub_entry(), which achieves the same
without relying on P_CHOICE.

Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
2024-05-10 04:34:53 +09:00
Masahiro Yamada
fb8dd48214 kconfig: use sym_get_choice_menu() in conf_write_defconfig()
Choices and their members are associated via the P_CHOICE property.

Currently, prop_get_symbol(sym_get_choice_prop()) is used to obtain
the choice of the given choice member.

Replace it with sym_get_choice_menu(), which retrieves the choice
without relying on P_CHOICE.

Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
2024-05-10 04:34:53 +09:00
Masahiro Yamada
7bcf2e03b5 kconfig: add sym_get_choice_menu() helper
Choices and their members are associated via the P_CHOICE property.

Currently, prop_get_symbol(sym_get_choice_prop()) is used to obtain
the choice of the given choice member.

We can do this without relying on P_CHOICE by checking the parent in
the menu structure.

Introduce a new helper to retrieve the choice if the given symbol is a
choice member.

This is intended to replace prop_get_symbol(sym_get_choice_prop()) and
deprecate P_CHOICE eventually.

Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
2024-05-10 04:34:53 +09:00
Masahiro Yamada
8a22f867e3 kconfig: turn defaults and additional prompt for choice members into error
menu_finalize() warns default properties for choice members and prompts
outside the choice block. These should be hard errors.

While I was here, I moved the checks to slim down menu_finalize().

Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
2024-05-10 04:34:53 +09:00
Masahiro Yamada
700e7a8d05 kconfig: turn missing prompt for choice members into error
Choice members must have a prompt; hence make it an error.

While I was here, I moved the check to the parser to slim down
_menu_finalize().

Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
2024-05-10 04:34:53 +09:00
Masahiro Yamada
8c00e58005 kconfig: turn conf_choice() into void function
The return value of conf_choice() is not used.

Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
2024-05-10 04:34:53 +09:00
Masahiro Yamada
7d2806746d kconfig: use linked list in sym_set_changed()
Following the approach employed in commit bedf923623 ("kconfig: use
linked list in get_symbol_str() to iterate over menus"), simplify the
iteration on the menus of the specified symbol.

Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
2024-05-10 04:34:52 +09:00
Masahiro Yamada
4cc7e6cef3 kconfig: gconf: use MENU_CHANGED instead of SYMBOL_CHANGED
SYMBOL_CHANGED and MENU_CHANGED are used to update GUI frontends
when the symbol value is changed. These are used inconsistently:
SYMBOL_CHANGED in gconf.c and MENU_CHANGE in qconf.cc.

MENU_CHANGED works more properly when a symbol has multiple prompts
(although such code is not ideal).

[test code]

    config FOO
            bool "foo prompt 1"

    config FOO
            bool "foo prompt 2"

In gconfig, if one of the two checkboxes is clicked, only the first
one is toggled. In xconfig, the two checkboxes work in sync.

Replace SYMBOL_CHANGED in gconf.c with MENU_CHANGED to align with
the xconfig behavior.

Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
2024-05-10 04:34:52 +09:00
Masahiro Yamada
a7efb160f6 kconfig: gconf: remove debug code
This is not so useful. If necessary, you can insert printf() or
whatever during debugging.

Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
2024-05-10 04:34:52 +09:00