77069 Commits

Author SHA1 Message Date
Jonas Karlman
1b22f686f1 dt-bindings: net: rockchip-dwmac: Add compatible string for RK3528
Rockchip RK3528 has two Ethernet controllers based on Synopsys DWC
Ethernet QoS IP.

Add compatible string for the RK3528 variant.

Signed-off-by: Jonas Karlman <jonas@kwiboo.se>
Reviewed-by: Rob Herring (Arm) <robh@kernel.org>
Link: https://patch.msgid.link/20250319214415.3086027-2-jonas@kwiboo.se
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2025-03-25 08:00:55 -07:00
Conor Dooley
a0d8572057
dt-bindings: riscv: document vector crypto requirements
The Unpriv spec states:
| The Zvknhb and Zvbc Vector Crypto Extensions --and accordingly the
| composite extensions Zvkn, Zvknc, Zvkng, and Zvksc-- require a Zve64x
| base, or application ("V") base Vector Extension. All of the other
| Vector Crypto Extensions can be built on any embedded (Zve*) or
| application ("V") base Vector Extension.

Enforce the minimum requirement via schema.

Link: https://github.com/riscv/riscv-isa-manual/blob/main/src/vector-crypto.adoc#extensions-overview
Acked-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Signed-off-by: Conor Dooley <conor.dooley@microchip.com>
Link: https://lore.kernel.org/r/20250312-flask-relay-b36ee622b2c8@spud
Signed-off-by: Alexandre Ghiti <alexghiti@rivosinc.com>
2025-03-25 14:19:35 +00:00
Conor Dooley
e9f1d61a5e
dt-bindings: riscv: add vector sub-extension dependencies
Section 33.18.2. Zve*: Vector Extensions for Embedded Processors
in [1] says:
| The Zve32f and Zve64x extensions depend on the Zve32x extension. The Zve64f extension depends
| on the Zve32f and Zve64x extensions. The Zve64d extension depends on the Zve64f extension

| The Zve32x extension depends on the Zicsr extension. The Zve32f and Zve64f extensions depend
| upon the F extension

| The Zve64d extension depends upon the D extension

Apply these rules to the bindings to help prevent invalid combinations.

Link: https://github.com/riscv/riscv-isa-manual/releases/tag/riscv-isa-release-698e64a-2024-09-09 [1]
Reviewed-by: Clément Léger <cleger@rivosinc.com>
Acked-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Signed-off-by: Conor Dooley <conor.dooley@microchip.com>
Link: https://lore.kernel.org/r/20250312-banking-crestless-58f3259a5018@spud
Signed-off-by: Alexandre Ghiti <alexghiti@rivosinc.com>
2025-03-25 14:19:35 +00:00
Conor Dooley
534d813a06
dt-bindings: riscv: d requires f
Per the specifications, the d extension for double-precision floating
point operations depends on the f extension for single-precision floating
point. Add that requirement to the bindings. This differs from the
Linux implementation, where single-precious only is not supported.

Reviewed-by: Clément Léger <cleger@rivosinc.com>
Acked-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Signed-off-by: Conor Dooley <conor.dooley@microchip.com>
Link: https://lore.kernel.org/r/20250312-perpetual-daunting-ad489c9a857a@spud
Signed-off-by: Alexandre Ghiti <alexghiti@rivosinc.com>
2025-03-25 14:19:34 +00:00
Andre Przywara
a6d86c1b64 dt-bindings: watchdog: sunxi: add Allwinner A523 compatible string
The Allwinner A523 SoC features a watchdog similar to the one used in
previous SoCs, but moves some registers around (by just one word), making
it incompatible to existing IPs.

Add the new name to the list of compatible string, and also to the list
of IP requiring two clock inputs.

Signed-off-by: Andre Przywara <andre.przywara@arm.com>
Acked-by: Jernej Skrabec <jernej.skrabec@gmail.com>
Acked-by: Conor Dooley <conor.dooley@microchip.com>
Link: https://lore.kernel.org/r/20250307005712.16828-4-andre.przywara@arm.com
Signed-off-by: Wim Van Sebroeck <wim@linux-watchdog.org>
2025-03-25 14:11:15 +01:00
Jiri Pirko
3e25c1a7c0 ynl: devlink: add missing board-serial-number
Add a missing attribute of board serial number.

Signed-off-by: Jiri Pirko <jiri@nvidia.com>
Reviewed-by: Simon Horman <horms@kernel.org>
Reviewed-by: Kalesh AP <kalesh-anakkur.purayil@broadcom.com>
Link: https://patch.msgid.link/20250320085947.103419-2-jiri@resnulli.us
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2025-03-25 04:50:39 -07:00
Wolfram Sang
21fd849535 i2c-host updates for v6.15
Refactoring and cleanups
  - octeon, cadence, i801, pasemi, mlxbf, bcm-iproc: general
    refactorings
  - octeon: remove 10-bit address support
 
 Improvements
  - amd-asf: improved error handling
  - designware: use guard(mutex)
  - amd-asf, designware: update naming to follow latest specs
  - cadence: fix cleanup path in probe
  - i801: use MMIO and I/O mapping helpers to access registers
  - pxa: handle error after clk_prepare_enable
 
 New features
  - added i2c_10bit_addr_*_from_msg() and updated multiple drivers
  - omap: added multiplexer state handling
  - qcom-geni: update frequency configuration
  - qup: introduce DMA usage policy
 
 New hardware support
  - exynos: add support for Samsung exynos7870
  - k1: add support for spacemit k1 (new driver)
  - imx: add support for i.mx94 lpi2c
  - rk3x: add support for rk3562
 
 Multiplexers
  - ltc4306, reg: fix assignment in platform_driver structure
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Merge tag 'i2c-host-6.15' of git://git.kernel.org/pub/scm/linux/kernel/git/andi.shyti/linux into i2c/for-mergewindow

i2c-host updates for v6.15

Refactoring and cleanups
 - octeon, cadence, i801, pasemi, mlxbf, bcm-iproc: general
   refactorings
 - octeon: remove 10-bit address support

Improvements
 - amd-asf: improved error handling
 - designware: use guard(mutex)
 - amd-asf, designware: update naming to follow latest specs
 - cadence: fix cleanup path in probe
 - i801: use MMIO and I/O mapping helpers to access registers
 - pxa: handle error after clk_prepare_enable

New features
 - added i2c_10bit_addr_*_from_msg() and updated multiple drivers
 - omap: added multiplexer state handling
 - qcom-geni: update frequency configuration
 - qup: introduce DMA usage policy

New hardware support
 - exynos: add support for Samsung exynos7870
 - k1: add support for spacemit k1 (new driver)
 - imx: add support for i.mx94 lpi2c
 - rk3x: add support for rk3562

Multiplexers
 - ltc4306, reg: fix assignment in platform_driver structure
2025-03-25 12:35:59 +01:00
Jason Xing
f38805c5d2 tcp: support TCP_RTO_MIN_US for set/getsockopt use
Support adjusting/reading RTO MIN for socket level by using set/getsockopt().

This new option has the same effect as TCP_BPF_RTO_MIN, which means it
doesn't affect RTAX_RTO_MIN usage (by using ip route...). Considering that
bpf option was implemented before this patch, so we need to use a standalone
new option for pure tcp set/getsockopt() use.

When the socket is created, its icsk_rto_min is set to the default
value that is controlled by sysctl_tcp_rto_min_us. Then if application
calls setsockopt() with TCP_RTO_MIN_US flag to pass a valid value, then
icsk_rto_min will be overridden in jiffies unit.

This patch adds WRITE_ONCE/READ_ONCE to avoid data-race around
icsk_rto_min.

Signed-off-by: Jason Xing <kerneljasonxing@gmail.com>
Reviewed-by: Eric Dumazet <edumazet@google.com>
Link: https://patch.msgid.link/20250317120314.41404-2-kerneljasonxing@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2025-03-25 04:27:19 -07:00
Denis Mukhin
3181424aea x86/early_printk: Add support for MMIO-based UARTs
During the bring-up of an x86 board, the kernel was crashing before
reaching the platform's console driver because of a bug in the firmware,
leaving no trace of the boot progress.

The only available method to debug the kernel boot process was via the
platform's MMIO-based UART, as the board lacked an I/O port-based UART,
PCI UART, or functional video output.

Then it turned out that earlyprintk= does not have a knob to configure
the MMIO-mapped UART.

Extend the early printk facility to support platform MMIO-based UARTs
on x86 systems, enabling debugging during the system bring-up phase.

The command line syntax to enable platform MMIO-based UART is:

  earlyprintk=mmio,membase[,{nocfg|baudrate}][,keep]

Note, the change does not integrate MMIO-based UART support to:

  arch/x86/boot/early_serial_console.c

Also, update kernel parameters documentation with the new syntax and
add the missing 'nocfg' setting to the PCI serial cards description.

Signed-off-by: Denis Mukhin <dmukhin@ford.com>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Link: https://lore.kernel.org/r/20250324-earlyprintk-v3-1-aee7421dc469@ford.com
2025-03-25 08:35:38 +01:00
Linus Torvalds
ebfb94d87b x86/build updates for v6.15:
- Drop CRC-32 checksum and the build tool that generates it
    (Ard Biesheuvel)
 
  - Fix broken copy command in genimage.sh when making isoimage
    (Nir Lichtman)
 
 Signed-off-by: Ingo Molnar <mingo@kernel.org>
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Merge tag 'x86-build-2025-03-22' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

Pull x86 build updates from Ingo Molnar:

 - Drop CRC-32 checksum and the build tool that generates it (Ard
   Biesheuvel)

 - Fix broken copy command in genimage.sh when making isoimage (Nir
   Lichtman)

* tag 'x86-build-2025-03-22' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  x86/boot: Add back some padding for the CRC-32 checksum
  x86/boot: Drop CRC-32 checksum and the build tool that generates it
  x86/build: Fix broken copy command in genimage.sh when making isoimage
2025-03-24 22:23:23 -07:00
Linus Torvalds
e34c38057a [ Merge note: this pull request depends on you having merged
two locking commits in the locking tree,
 	      part of the locking-core-2025-03-22 pull request. ]
 
 x86 CPU features support:
   - Generate the <asm/cpufeaturemasks.h> header based on build config
     (H. Peter Anvin, Xin Li)
   - x86 CPUID parsing updates and fixes (Ahmed S. Darwish)
   - Introduce the 'setcpuid=' boot parameter (Brendan Jackman)
   - Enable modifying CPU bug flags with '{clear,set}puid='
     (Brendan Jackman)
   - Utilize CPU-type for CPU matching (Pawan Gupta)
   - Warn about unmet CPU feature dependencies (Sohil Mehta)
   - Prepare for new Intel Family numbers (Sohil Mehta)
 
 Percpu code:
   - Standardize & reorganize the x86 percpu layout and
     related cleanups (Brian Gerst)
   - Convert the stackprotector canary to a regular percpu
     variable (Brian Gerst)
   - Add a percpu subsection for cache hot data (Brian Gerst)
   - Unify __pcpu_op{1,2}_N() macros to __pcpu_op_N() (Uros Bizjak)
   - Construct __percpu_seg_override from __percpu_seg (Uros Bizjak)
 
 MM:
   - Add support for broadcast TLB invalidation using AMD's INVLPGB instruction
     (Rik van Riel)
   - Rework ROX cache to avoid writable copy (Mike Rapoport)
   - PAT: restore large ROX pages after fragmentation
     (Kirill A. Shutemov, Mike Rapoport)
   - Make memremap(MEMREMAP_WB) map memory as encrypted by default
     (Kirill A. Shutemov)
   - Robustify page table initialization (Kirill A. Shutemov)
   - Fix flush_tlb_range() when used for zapping normal PMDs (Jann Horn)
   - Clear _PAGE_DIRTY for kernel mappings when we clear _PAGE_RW
     (Matthew Wilcox)
 
 KASLR:
   - x86/kaslr: Reduce KASLR entropy on most x86 systems,
     to support PCI BAR space beyond the 10TiB region
     (CONFIG_PCI_P2PDMA=y) (Balbir Singh)
 
 CPU bugs:
   - Implement FineIBT-BHI mitigation (Peter Zijlstra)
   - speculation: Simplify and make CALL_NOSPEC consistent (Pawan Gupta)
   - speculation: Add a conditional CS prefix to CALL_NOSPEC (Pawan Gupta)
   - RFDS: Exclude P-only parts from the RFDS affected list (Pawan Gupta)
 
 System calls:
   - Break up entry/common.c (Brian Gerst)
   - Move sysctls into arch/x86 (Joel Granados)
 
 Intel LAM support updates: (Maciej Wieczor-Retman)
   - selftests/lam: Move cpu_has_la57() to use cpuinfo flag
   - selftests/lam: Skip test if LAM is disabled
   - selftests/lam: Test get_user() LAM pointer handling
 
 AMD SMN access updates:
   - Add SMN offsets to exclusive region access (Mario Limonciello)
   - Add support for debugfs access to SMN registers (Mario Limonciello)
   - Have HSMP use SMN through AMD_NODE (Yazen Ghannam)
 
 Power management updates: (Patryk Wlazlyn)
   - Allow calling mwait_play_dead with an arbitrary hint
   - ACPI/processor_idle: Add FFH state handling
   - intel_idle: Provide the default enter_dead() handler
   - Eliminate mwait_play_dead_cpuid_hint()
 
 Bootup:
 
 Build system:
   - Raise the minimum GCC version to 8.1 (Brian Gerst)
   - Raise the minimum LLVM version to 15.0.0
     (Nathan Chancellor)
 
 Kconfig: (Arnd Bergmann)
   - Add cmpxchg8b support back to Geode CPUs
   - Drop 32-bit "bigsmp" machine support
   - Rework CONFIG_GENERIC_CPU compiler flags
   - Drop configuration options for early 64-bit CPUs
   - Remove CONFIG_HIGHMEM64G support
   - Drop CONFIG_SWIOTLB for PAE
   - Drop support for CONFIG_HIGHPTE
   - Document CONFIG_X86_INTEL_MID as 64-bit-only
   - Remove old STA2x11 support
   - Only allow CONFIG_EISA for 32-bit
 
 Headers:
   - Replace __ASSEMBLY__ with __ASSEMBLER__ in UAPI and non-UAPI headers
     (Thomas Huth)
 
 Assembly code & machine code patching:
   - x86/alternatives: Simplify alternative_call() interface (Josh Poimboeuf)
   - x86/alternatives: Simplify callthunk patching (Peter Zijlstra)
   - KVM: VMX: Use named operands in inline asm (Josh Poimboeuf)
   - x86/hyperv: Use named operands in inline asm (Josh Poimboeuf)
   - x86/traps: Cleanup and robustify decode_bug() (Peter Zijlstra)
   - x86/kexec: Merge x86_32 and x86_64 code using macros from <asm/asm.h>
     (Uros Bizjak)
   - Use named operands in inline asm (Uros Bizjak)
   - Improve performance by using asm_inline() for atomic locking instructions
     (Uros Bizjak)
 
 Earlyprintk:
   - Harden early_serial (Peter Zijlstra)
 
 NMI handler:
   - Add an emergency handler in nmi_desc & use it in nmi_shootdown_cpus()
     (Waiman Long)
 
 Miscellaneous fixes and cleanups:
 
   - by Ahmed S. Darwish, Andy Shevchenko, Ard Biesheuvel,
     Artem Bityutskiy, Borislav Petkov, Brendan Jackman, Brian Gerst,
     Dan Carpenter, Dr. David Alan Gilbert, H. Peter Anvin,
     Ingo Molnar, Josh Poimboeuf, Kevin Brodsky, Mike Rapoport,
     Lukas Bulwahn, Maciej Wieczor-Retman, Max Grobecker,
     Patryk Wlazlyn, Pawan Gupta, Peter Zijlstra,
     Philip Redkin, Qasim Ijaz, Rik van Riel, Thomas Gleixner,
     Thorsten Blum, Tom Lendacky, Tony Luck, Uros Bizjak,
     Vitaly Kuznetsov, Xin Li, liuye.
 
 Signed-off-by: Ingo Molnar <mingo@kernel.org>
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Merge tag 'x86-core-2025-03-22' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

Pull core x86 updates from Ingo Molnar:
 "x86 CPU features support:
   - Generate the <asm/cpufeaturemasks.h> header based on build config
     (H. Peter Anvin, Xin Li)
   - x86 CPUID parsing updates and fixes (Ahmed S. Darwish)
   - Introduce the 'setcpuid=' boot parameter (Brendan Jackman)
   - Enable modifying CPU bug flags with '{clear,set}puid=' (Brendan
     Jackman)
   - Utilize CPU-type for CPU matching (Pawan Gupta)
   - Warn about unmet CPU feature dependencies (Sohil Mehta)
   - Prepare for new Intel Family numbers (Sohil Mehta)

  Percpu code:
   - Standardize & reorganize the x86 percpu layout and related cleanups
     (Brian Gerst)
   - Convert the stackprotector canary to a regular percpu variable
     (Brian Gerst)
   - Add a percpu subsection for cache hot data (Brian Gerst)
   - Unify __pcpu_op{1,2}_N() macros to __pcpu_op_N() (Uros Bizjak)
   - Construct __percpu_seg_override from __percpu_seg (Uros Bizjak)

  MM:
   - Add support for broadcast TLB invalidation using AMD's INVLPGB
     instruction (Rik van Riel)
   - Rework ROX cache to avoid writable copy (Mike Rapoport)
   - PAT: restore large ROX pages after fragmentation (Kirill A.
     Shutemov, Mike Rapoport)
   - Make memremap(MEMREMAP_WB) map memory as encrypted by default
     (Kirill A. Shutemov)
   - Robustify page table initialization (Kirill A. Shutemov)
   - Fix flush_tlb_range() when used for zapping normal PMDs (Jann Horn)
   - Clear _PAGE_DIRTY for kernel mappings when we clear _PAGE_RW
     (Matthew Wilcox)

  KASLR:
   - x86/kaslr: Reduce KASLR entropy on most x86 systems, to support PCI
     BAR space beyond the 10TiB region (CONFIG_PCI_P2PDMA=y) (Balbir
     Singh)

  CPU bugs:
   - Implement FineIBT-BHI mitigation (Peter Zijlstra)
   - speculation: Simplify and make CALL_NOSPEC consistent (Pawan Gupta)
   - speculation: Add a conditional CS prefix to CALL_NOSPEC (Pawan
     Gupta)
   - RFDS: Exclude P-only parts from the RFDS affected list (Pawan
     Gupta)

  System calls:
   - Break up entry/common.c (Brian Gerst)
   - Move sysctls into arch/x86 (Joel Granados)

  Intel LAM support updates: (Maciej Wieczor-Retman)
   - selftests/lam: Move cpu_has_la57() to use cpuinfo flag
   - selftests/lam: Skip test if LAM is disabled
   - selftests/lam: Test get_user() LAM pointer handling

  AMD SMN access updates:
   - Add SMN offsets to exclusive region access (Mario Limonciello)
   - Add support for debugfs access to SMN registers (Mario Limonciello)
   - Have HSMP use SMN through AMD_NODE (Yazen Ghannam)

  Power management updates: (Patryk Wlazlyn)
   - Allow calling mwait_play_dead with an arbitrary hint
   - ACPI/processor_idle: Add FFH state handling
   - intel_idle: Provide the default enter_dead() handler
   - Eliminate mwait_play_dead_cpuid_hint()

  Build system:
   - Raise the minimum GCC version to 8.1 (Brian Gerst)
   - Raise the minimum LLVM version to 15.0.0 (Nathan Chancellor)

  Kconfig: (Arnd Bergmann)
   - Add cmpxchg8b support back to Geode CPUs
   - Drop 32-bit "bigsmp" machine support
   - Rework CONFIG_GENERIC_CPU compiler flags
   - Drop configuration options for early 64-bit CPUs
   - Remove CONFIG_HIGHMEM64G support
   - Drop CONFIG_SWIOTLB for PAE
   - Drop support for CONFIG_HIGHPTE
   - Document CONFIG_X86_INTEL_MID as 64-bit-only
   - Remove old STA2x11 support
   - Only allow CONFIG_EISA for 32-bit

  Headers:
   - Replace __ASSEMBLY__ with __ASSEMBLER__ in UAPI and non-UAPI
     headers (Thomas Huth)

  Assembly code & machine code patching:
   - x86/alternatives: Simplify alternative_call() interface (Josh
     Poimboeuf)
   - x86/alternatives: Simplify callthunk patching (Peter Zijlstra)
   - KVM: VMX: Use named operands in inline asm (Josh Poimboeuf)
   - x86/hyperv: Use named operands in inline asm (Josh Poimboeuf)
   - x86/traps: Cleanup and robustify decode_bug() (Peter Zijlstra)
   - x86/kexec: Merge x86_32 and x86_64 code using macros from
     <asm/asm.h> (Uros Bizjak)
   - Use named operands in inline asm (Uros Bizjak)
   - Improve performance by using asm_inline() for atomic locking
     instructions (Uros Bizjak)

  Earlyprintk:
   - Harden early_serial (Peter Zijlstra)

  NMI handler:
   - Add an emergency handler in nmi_desc & use it in
     nmi_shootdown_cpus() (Waiman Long)

  Miscellaneous fixes and cleanups:
   - by Ahmed S. Darwish, Andy Shevchenko, Ard Biesheuvel, Artem
     Bityutskiy, Borislav Petkov, Brendan Jackman, Brian Gerst, Dan
     Carpenter, Dr. David Alan Gilbert, H. Peter Anvin, Ingo Molnar,
     Josh Poimboeuf, Kevin Brodsky, Mike Rapoport, Lukas Bulwahn, Maciej
     Wieczor-Retman, Max Grobecker, Patryk Wlazlyn, Pawan Gupta, Peter
     Zijlstra, Philip Redkin, Qasim Ijaz, Rik van Riel, Thomas Gleixner,
     Thorsten Blum, Tom Lendacky, Tony Luck, Uros Bizjak, Vitaly
     Kuznetsov, Xin Li, liuye"

* tag 'x86-core-2025-03-22' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (211 commits)
  zstd: Increase DYNAMIC_BMI2 GCC version cutoff from 4.8 to 11.0 to work around compiler segfault
  x86/asm: Make asm export of __ref_stack_chk_guard unconditional
  x86/mm: Only do broadcast flush from reclaim if pages were unmapped
  perf/x86/intel, x86/cpu: Replace Pentium 4 model checks with VFM ones
  perf/x86/intel, x86/cpu: Simplify Intel PMU initialization
  x86/headers: Replace __ASSEMBLY__ with __ASSEMBLER__ in non-UAPI headers
  x86/headers: Replace __ASSEMBLY__ with __ASSEMBLER__ in UAPI headers
  x86/locking/atomic: Improve performance by using asm_inline() for atomic locking instructions
  x86/asm: Use asm_inline() instead of asm() in clwb()
  x86/asm: Use CLFLUSHOPT and CLWB mnemonics in <asm/special_insns.h>
  x86/hweight: Use asm_inline() instead of asm()
  x86/hweight: Use ASM_CALL_CONSTRAINT in inline asm()
  x86/hweight: Use named operands in inline asm()
  x86/stackprotector/64: Only export __ref_stack_chk_guard on CONFIG_SMP
  x86/head/64: Avoid Clang < 17 stack protector in startup code
  x86/kexec: Merge x86_32 and x86_64 code using macros from <asm/asm.h>
  x86/runtime-const: Add the RUNTIME_CONST_PTR assembly macro
  x86/cpu/intel: Limit the non-architectural constant_tsc model checks
  x86/mm/pat: Replace Intel x86_model checks with VFM ones
  x86/cpu/intel: Fix fast string initialization for extended Families
  ...
2025-03-24 22:06:11 -07:00
Linus Torvalds
32b22538be Scheduler updates for v6.15:
[ Merge note, these two commits are identical:
 
    - f3fa0e40df17 ("sched/clock: Don't define sched_clock_irqtime as static key")
    - b9f2b29b9494 ("sched: Don't define sched_clock_irqtime as static key")
 
   The first one is a cherry-picked version of the second, and the first one
   is already upstream. ]
 
 Core & fair scheduler changes:
 
   - Cancel the slice protection of the idle entity (Zihan Zhou)
   - Reduce the default slice to avoid tasks getting an extra tick
     (Zihan Zhou)
   - Force propagating min_slice of cfs_rq when {en,de}queue tasks
     (Tianchen Ding)
   - Refactor can_migrate_task() to elimate looping (I Hsin Cheng)
   - Add unlikey branch hints to several system calls (Colin Ian King)
   - Optimize current_clr_polling() on certain architectures (Yujun Dong)
 
 Deadline scheduler: (Juri Lelli)
 
   - Remove redundant dl_clear_root_domain call
   - Move dl_rebuild_rd_accounting to cpuset.h
 
 Uclamp:
 
   - Use the uclamp_is_used() helper instead of open-coding it (Xuewen Yan)
   - Optimize sched_uclamp_used static key enabling (Xuewen Yan)
 
 Scheduler topology support: (Juri Lelli)
 
   - Ignore special tasks when rebuilding domains
   - Add wrappers for sched_domains_mutex
   - Generalize unique visiting of root domains
   - Rebuild root domain accounting after every update
   - Remove partition_and_rebuild_sched_domains
   - Stop exposing partition_sched_domains_locked
 
 RSEQ: (Michael Jeanson)
 
   - Update kernel fields in lockstep with CONFIG_DEBUG_RSEQ=y
   - Fix segfault on registration when rseq_cs is non-zero
   - selftests: Add rseq syscall errors test
   - selftests: Ensure the rseq ABI TLS is actually 1024 bytes
 
 Membarriers:
 
   - Fix redundant load of membarrier_state (Nysal Jan K.A.)
 
 Scheduler debugging:
 
   - Introduce and use preempt_model_str() (Sebastian Andrzej Siewior)
   - Make CONFIG_SCHED_DEBUG unconditional (Ingo Molnar)
 
 Fixes and cleanups:
 
   - Always save/restore x86 TSC sched_clock() on suspend/resume
    (Guilherme G. Piccoli)
 
   - Misc fixes and cleanups (Thorsten Blum, Juri Lelli,
     Sebastian Andrzej Siewior)
 
 Signed-off-by: Ingo Molnar <mingo@kernel.org>
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Merge tag 'sched-core-2025-03-22' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

Pull scheduler updates from Ingo Molnar:
 "Core & fair scheduler changes:

   - Cancel the slice protection of the idle entity (Zihan Zhou)
   - Reduce the default slice to avoid tasks getting an extra tick
     (Zihan Zhou)
   - Force propagating min_slice of cfs_rq when {en,de}queue tasks
     (Tianchen Ding)
   - Refactor can_migrate_task() to elimate looping (I Hsin Cheng)
   - Add unlikey branch hints to several system calls (Colin Ian King)
   - Optimize current_clr_polling() on certain architectures (Yujun
     Dong)

  Deadline scheduler: (Juri Lelli)
   - Remove redundant dl_clear_root_domain call
   - Move dl_rebuild_rd_accounting to cpuset.h

  Uclamp:
   - Use the uclamp_is_used() helper instead of open-coding it (Xuewen
     Yan)
   - Optimize sched_uclamp_used static key enabling (Xuewen Yan)

  Scheduler topology support: (Juri Lelli)
   - Ignore special tasks when rebuilding domains
   - Add wrappers for sched_domains_mutex
   - Generalize unique visiting of root domains
   - Rebuild root domain accounting after every update
   - Remove partition_and_rebuild_sched_domains
   - Stop exposing partition_sched_domains_locked

  RSEQ: (Michael Jeanson)
   - Update kernel fields in lockstep with CONFIG_DEBUG_RSEQ=y
   - Fix segfault on registration when rseq_cs is non-zero
   - selftests: Add rseq syscall errors test
   - selftests: Ensure the rseq ABI TLS is actually 1024 bytes

  Membarriers:
   - Fix redundant load of membarrier_state (Nysal Jan K.A.)

  Scheduler debugging:
   - Introduce and use preempt_model_str() (Sebastian Andrzej Siewior)
   - Make CONFIG_SCHED_DEBUG unconditional (Ingo Molnar)

  Fixes and cleanups:
   - Always save/restore x86 TSC sched_clock() on suspend/resume
     (Guilherme G. Piccoli)
   - Misc fixes and cleanups (Thorsten Blum, Juri Lelli, Sebastian
     Andrzej Siewior)"

* tag 'sched-core-2025-03-22' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (40 commits)
  cpuidle, sched: Use smp_mb__after_atomic() in current_clr_polling()
  sched/debug: Remove CONFIG_SCHED_DEBUG
  sched/debug: Remove CONFIG_SCHED_DEBUG from self-test config files
  sched/debug, Documentation: Remove (most) CONFIG_SCHED_DEBUG references from documentation
  sched/debug: Make CONFIG_SCHED_DEBUG functionality unconditional
  sched/debug: Make 'const_debug' tunables unconditional __read_mostly
  sched/debug: Change SCHED_WARN_ON() to WARN_ON_ONCE()
  rseq/selftests: Fix namespace collision with rseq UAPI header
  include/{topology,cpuset}: Move dl_rebuild_rd_accounting to cpuset.h
  sched/topology: Stop exposing partition_sched_domains_locked
  cgroup/cpuset: Remove partition_and_rebuild_sched_domains
  sched/topology: Remove redundant dl_clear_root_domain call
  sched/deadline: Rebuild root domain accounting after every update
  sched/deadline: Generalize unique visiting of root domains
  sched/topology: Wrappers for sched_domains_mutex
  sched/deadline: Ignore special tasks when rebuilding domains
  tracing: Use preempt_model_str()
  xtensa: Rely on generic printing of preemption model
  x86: Rely on generic printing of preemption model
  s390: Rely on generic printing of preemption model
  ...
2025-03-24 21:28:12 -07:00
Linus Torvalds
3ba7dfb8da RCU pull request for v6.15
This pull request contains the following branches:
 
 docs.2025.02.04a:
  - Add broken-timing possibility to stallwarn.rst.
  - Improve discussion of this_cpu_ptr(), add raw_cpu_ptr().
  - Document self-propagating callbacks.
  - Point call_srcu() to call_rcu() for detailed memory ordering.
  - Add CONFIG_RCU_LAZY delays to call_rcu() kernel-doc header.
  - Clarify RCU_LAZY and RCU_LAZY_DEFAULT_OFF help text.
  - Remove references to old grace-period-wait primitives.
 
 srcu.2025.02.05a:
  - Introduce srcu_read_{un,}lock_fast(), which is similar to
    srcu_read_{un,}lock_lite(): avoid smp_mb()s in lock and unlock at the
    cost of calling synchronize_rcu() in synchronize_srcu(). Moreover, by
    returning the percpu offset of the counter at srcu_read_lock_fast()
    time, srcu_read_unlock_fast() can save extra pointer dereferencing,
    which makes it faster than srcu_read_{un,}lock_lite().
    srcu_read_{un,}lock_fast() are intended to replace
    rcu_read_{un,}lock_trace() if possible.
 
 torture.2025.02.05a:
  - Add get_torture_init_jiffies() to return the start time of the test.
  - Add a test_boost_holdoff module parameter to allow delaying boosting
    tests when building rcutorture as built-in.
  - Add grace period sequence number logging at the beginning and end of
    failure/close-call results.
  - Switch to hexadecimal for the expedited grace period sequence number
    in the rcu_exp_grace_period trace point.
  - Make cur_ops->format_gp_seqs take buffer length.
  - Move RCU_TORTURE_TEST_{CHK_RDR_STATE,LOG_CPU} to bool.
  - Complain when invalid SRCU reader_flavor is specified.
  - Add FORCE_NEED_SRCU_NMI_SAFE Kconfig for testing, which forces SRCU
    uses atomics even when percpu ops are NMI safe, and use the Kconfig
    for SRCU lockdep testing.
 
 misc.2025.03.04a:
  - Split rcu_report_exp_cpu_mult() mask parameter and use for tracing.
  - Remove READ_ONCE() for rdp->gpwrap access in __note_gp_changes().
  - Fix get_state_synchronize_rcu_full() GP-start detection.
  - Move RCU Tasks self-tests to core_initcall().
  - Print segment lengths in show_rcu_nocb_gp_state().
  - Make RCU watch ct_kernel_exit_state() warning.
  - Flush console log from kernel_power_off().
  - rcutorture: Allow a negative value for nfakewriters.
  - rcu: Update TREE05.boot to test normal synchronize_rcu().
  - rcu: Use _full() API to debug synchronize_rcu().
 
 lazypreempt.2025.03.04a: Make RCU handle PREEMPT_LAZY better:
  - Fix header guard for rcu_all_qs().
  - rcu: Rename PREEMPT_AUTO to PREEMPT_LAZY.
  - Update __cond_resched comment about RCU quiescent states.
  - Handle unstable rdp in rcu_read_unlock_strict().
  - Handle quiescent states for PREEMPT_RCU=n, PREEMPT_COUNT=y.
  - osnoise: Provide quiescent states.
  - Adjust rcutorture with possible PREEMPT_RCU=n && PREEMPT_COUNT=y
    combination.
  - Limit PREEMPT_RCU configurations.
  - Make rcutorture senario TREE07 and senario TREE10 use PREEMPT_LAZY=y.
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Merge tag 'rcu-next-v6.15' of git://git.kernel.org/pub/scm/linux/kernel/git/rcu/linux

Pull RCU updates from Boqun Feng:
 "Documentation:
   - Add broken-timing possibility to stallwarn.rst
   - Improve discussion of this_cpu_ptr(), add raw_cpu_ptr()
   - Document self-propagating callbacks
   - Point call_srcu() to call_rcu() for detailed memory ordering
   - Add CONFIG_RCU_LAZY delays to call_rcu() kernel-doc header
   - Clarify RCU_LAZY and RCU_LAZY_DEFAULT_OFF help text
   - Remove references to old grace-period-wait primitives

  srcu:
   - Introduce srcu_read_{un,}lock_fast(), which is similar to
     srcu_read_{un,}lock_lite(): avoid smp_mb()s in lock and unlock
     at the cost of calling synchronize_rcu() in synchronize_srcu()

     Moreover, by returning the percpu offset of the counter at
     srcu_read_lock_fast() time, srcu_read_unlock_fast() can avoid
     extra pointer dereferencing, which makes it faster than
     srcu_read_{un,}lock_lite()

     srcu_read_{un,}lock_fast() are intended to replace
     rcu_read_{un,}lock_trace() if possible

  RCU torture:
   - Add get_torture_init_jiffies() to return the start time of the test
   - Add a test_boost_holdoff module parameter to allow delaying
     boosting tests when building rcutorture as built-in
   - Add grace period sequence number logging at the beginning and end
     of failure/close-call results
   - Switch to hexadecimal for the expedited grace period sequence
     number in the rcu_exp_grace_period trace point
   - Make cur_ops->format_gp_seqs take buffer length
   - Move RCU_TORTURE_TEST_{CHK_RDR_STATE,LOG_CPU} to bool
   - Complain when invalid SRCU reader_flavor is specified
   - Add FORCE_NEED_SRCU_NMI_SAFE Kconfig for testing, which forces SRCU
     uses atomics even when percpu ops are NMI safe, and use the Kconfig
     for SRCU lockdep testing

  Misc:
   - Split rcu_report_exp_cpu_mult() mask parameter and use for tracing
   - Remove READ_ONCE() for rdp->gpwrap access in __note_gp_changes()
   - Fix get_state_synchronize_rcu_full() GP-start detection
   - Move RCU Tasks self-tests to core_initcall()
   - Print segment lengths in show_rcu_nocb_gp_state()
   - Make RCU watch ct_kernel_exit_state() warning
   - Flush console log from kernel_power_off()
   - rcutorture: Allow a negative value for nfakewriters
   - rcu: Update TREE05.boot to test normal synchronize_rcu()
   - rcu: Use _full() API to debug synchronize_rcu()

  Make RCU handle PREEMPT_LAZY better:
   - Fix header guard for rcu_all_qs()
   - rcu: Rename PREEMPT_AUTO to PREEMPT_LAZY
   - Update __cond_resched comment about RCU quiescent states
   - Handle unstable rdp in rcu_read_unlock_strict()
   - Handle quiescent states for PREEMPT_RCU=n, PREEMPT_COUNT=y
   - osnoise: Provide quiescent states
   - Adjust rcutorture with possible PREEMPT_RCU=n && PREEMPT_COUNT=y
     combination
   - Limit PREEMPT_RCU configurations
   - Make rcutorture senario TREE07 and senario TREE10 use
     PREEMPT_LAZY=y"

* tag 'rcu-next-v6.15' of git://git.kernel.org/pub/scm/linux/kernel/git/rcu/linux: (59 commits)
  rcutorture: Make scenario TREE07 build CONFIG_PREEMPT_LAZY=y
  rcutorture: Make scenario TREE10 build CONFIG_PREEMPT_LAZY=y
  rcu: limit PREEMPT_RCU configurations
  rcutorture: Update ->extendables check for lazy preemption
  rcutorture: Update rcutorture_one_extend_check() for lazy preemption
  osnoise: provide quiescent states
  rcu: Use _full() API to debug synchronize_rcu()
  rcu: Update TREE05.boot to test normal synchronize_rcu()
  rcutorture: Allow a negative value for nfakewriters
  Flush console log from kernel_power_off()
  context_tracking: Make RCU watch ct_kernel_exit_state() warning
  rcu/nocb: Print segment lengths in show_rcu_nocb_gp_state()
  rcu-tasks: Move RCU Tasks self-tests to core_initcall()
  rcu: Fix get_state_synchronize_rcu_full() GP-start detection
  torture: Make SRCU lockdep testing use srcu_read_lock_nmisafe()
  srcu: Add FORCE_NEED_SRCU_NMI_SAFE Kconfig for testing
  rcutorture: Complain when invalid SRCU reader_flavor is specified
  rcutorture: Move RCU_TORTURE_TEST_{CHK_RDR_STATE,LOG_CPU} to bool
  rcutorture: Make cur_ops->format_gp_seqs take buffer length
  rcutorture: Add ftrace-compatible timestamp to GP# failure/close-call output
  ...
2025-03-24 19:41:37 -07:00
Linus Torvalds
f81c2b8150 It has been a reasonably busy cycle for docs...
- Significant changes throughout the tree to bring Python code up to
   current standards and raise the minimum Python required to 3.9.  Much of
   this is preparatory to replacing the ancient Perl scripts/kernel-doc
   horror with a slightly less horrifying Python implementation, expected
   for 6.16.
 
 - Update the minimum Sphinx required to 3.4.3, allowing us to remove a
   bunch of older compatibility code.
 
 - Rework and improve the generation of the ABI documentation.
 
   (All of the above done by Mauro)
 
 - Lots of translation updates.  Alex Shi and Yanteng Si are taking on
   responsibility for the Chinese translations going forward; that work will
   still get to you via docs-next
 
 - Try to standardize the format for indicating a developer's affiliation in
   commit tags.
 
 - Clarify the TAB's role in CoC enforcement actions.
 
 - Try to spell out the rules for when a commit tag can name another
   developer without their explicit permission.
 
 Plus lots of other typo fixes and updates.
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Merge tag 'docs-6.15' of git://git.lwn.net/linux

Pull documentation updates from Jonathan Corbet:
 "It has been a reasonably busy cycle for docs...

   - Significant changes throughout the tree to bring Python code up to
     current standards and raise the minimum Python required to 3.9

     Much of this is preparatory to replacing the ancient Perl
     scripts/kernel-doc horror with a slightly less horrifying Python
     implementation, expected for 6.16

   - Update the minimum Sphinx required to 3.4.3, allowing us to remove
     a bunch of older compatibility code

   - Rework and improve the generation of the ABI documentation

  (All of the above done by Mauro)

   - Lots of translation updates. Alex Shi and Yanteng Si are taking on
     responsibility for the Chinese translations going forward; that
     work will still get to you via docs-next

   - Try to standardize the format for indicating a developer's
     affiliation in commit tags

   - Clarify the TAB's role in CoC enforcement actions

   - Try to spell out the rules for when a commit tag can name another
     developer without their explicit permission

  Plus lots of other typo fixes and updates"

* tag 'docs-6.15' of git://git.lwn.net/linux: (98 commits)
  docs/zh_CN: fix spelling mistake
  docs/Chinese: change the disclaimer words
  docs/zh_CN: Add snp-tdx-threat-model index Chinese translation
  docs: driver-api: firmware: clarify userspace requirements
  docs: clarify rules wrt tagging other people
  docs: Remove outdated highuid.rst documentation
  Documentation: dma-buf: heaps: Add heap name definitions
  docs/.../submit-checklist: Use Documentation/admin-guide/abi.rst for cross-ref of README
  docs: Correct installation instruction
  Documentation: kcsan: fix "Plain Accesses and Data Races" URL in kcsan.rst
  Documentation/CoC: Spell out the TAB role in enforcement decisions
  Documentation: ocxl.rst: Update consortium site
  scripts: get_feat.pl: substitute s390x with s390
  scripts/kernel-doc: drop dead code for Wcontents_before_sections
  scripts/kernel-doc: don't add not needed new lines
  docs: driver-api/infiniband.rst: fix Kerneldoc markup
  drivers: firewire: firewire-cdev.h: fix identation on a kernel-doc markup
  drivers: media: intel-ipu3.h: fix identation on a kernel-doc markup
  include/asm-generic/io.h: fix kerneldoc markup
  Docs/arch/arm64: Fix spelling in amu.rst
  ...
2025-03-24 18:42:27 -07:00
Linus Torvalds
bcb044256d sched_ext: Changes for v6.15
- Add mechanism to count and report internal events. This significantly
   improves visibility on subtle corner conditions.
 
 - The default idle CPU selection logic is revamped and improved in multiple
   ways including being made topology aware.
 
 - sched_ext was disabling ttwu_queue for simplicity, which can be costly
   when hardware topology is more complex. Implement
   SCX_OPS_ALLOWED_QUEUED_WAKEUP so that BPF schedulers can selectively
   enable ttwu_queue.
 
 - tools/sched_ext updates to improve compatibility among others.
 
 - Other misc updates and fixes.
 
 - sched_ext/for-6.14-fixes were pulled a few times to receive prerequisite
   fixes and resolve conflicts.
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Merge tag 'sched_ext-for-6.15' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/sched_ext

Pull sched_ext updates from Tejun Heo:

 - Add mechanism to count and report internal events. This significantly
   improves visibility on subtle corner conditions.

 - The default idle CPU selection logic is revamped and improved in
   multiple ways including being made topology aware.

 - sched_ext was disabling ttwu_queue for simplicity, which can be
   costly when hardware topology is more complex. Implement
   SCX_OPS_ALLOWED_QUEUED_WAKEUP so that BPF schedulers can selectively
   enable ttwu_queue.

 - tools/sched_ext updates to improve compatibility among others.

 - Other misc updates and fixes.

 - sched_ext/for-6.14-fixes were pulled a few times to receive
   prerequisite fixes and resolve conflicts.

* tag 'sched_ext-for-6.15' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/sched_ext: (42 commits)
  sched_ext: idle: Refactor scx_select_cpu_dfl()
  sched_ext: idle: Honor idle flags in the built-in idle selection policy
  sched_ext: Skip per-CPU tasks in scx_bpf_reenqueue_local()
  sched_ext: Add trace point to track sched_ext core events
  sched_ext: Change the event type from u64 to s64
  sched_ext: Documentation: add task lifecycle summary
  tools/sched_ext: Provide a compatible helper for scx_bpf_events()
  selftests/sched_ext: Add NUMA-aware scheduler test
  tools/sched_ext: Provide consistent access to scx flags
  sched_ext: idle: Fix scx_bpf_pick_any_cpu_node() behavior
  sched_ext: idle: Introduce scx_bpf_nr_node_ids()
  sched_ext: idle: Introduce node-aware idle cpu kfunc helpers
  sched_ext: idle: Per-node idle cpumasks
  sched_ext: idle: Introduce SCX_OPS_BUILTIN_IDLE_PER_NODE
  sched_ext: idle: Make idle static keys private
  sched/topology: Introduce for_each_node_numadist() iterator
  mm/numa: Introduce nearest_node_nodemask()
  nodemask: numa: reorganize inclusion path
  nodemask: add nodes_copy()
  tools/sched_ext: Sync with scx repo
  ...
2025-03-24 17:23:48 -07:00
Linus Torvalds
94dc216ad8 cgroup: Changes for v6.15
- Add deprecation info messages to cgroup1-only features.
 
 - rstat updates including a bug fix and breaking up a critical section to
   reduce interrupt latency impact.
 
 - Other misc and doc updates.
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Merge tag 'cgroup-for-6.15' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/cgroup

Pull cgroup updates from Tejun Heo:

 - Add deprecation info messages to cgroup1-only features

 - rstat updates including a bug fix and breaking up a critical section
   to reduce interrupt latency impact

 - Other misc and doc updates

* tag 'cgroup-for-6.15' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/cgroup:
  cgroup: rstat: Cleanup flushing functions and locking
  cgroup/rstat: avoid disabling irqs for O(num_cpu)
  mm: Fix a build breakage in memcontrol-v1.c
  blk-cgroup: Simplify policy files registration
  cgroup: Update file naming comment
  cgroup: Add deprecation message to legacy freezer controller
  mm: Add transformation message for per-memcg swappiness
  RFC cgroup/cpuset-v1: Add deprecation messages to sched_relax_domain_level
  cgroup/cpuset-v1: Add deprecation messages to memory_migrate
  cgroup/cpuset-v1: Add deprecation messages to mem_exclusive and mem_hardwall
  cgroup: Print message when /proc/cgroups is read on v2-only system
  cgroup/blkio: Add deprecation messages to reset_stats
  cgroup/cpuset-v1: Add deprecation messages to memory_spread_page and memory_spread_slab
  cgroup/cpuset-v1: Add deprecation messages to sched_load_balance and memory_pressure_enabled
  cgroup, docs: Be explicit about independence of RT_GROUP_SCHED and non-cpu controllers
  cgroup/rstat: Fix forceidle time in cpu.stat
  cgroup/misc: Remove unused misc_cg_res_total_usage
  cgroup/cpuset: Move procfs cpuset attribute under cgroup-v1.c
  cgroup: update comment about dropping cgroup kn refs
2025-03-24 16:49:40 -07:00
Linus Torvalds
fc13a78e1f hardening updates for v6.15-rc1
- loadpin: remove unsupported MODULE_COMPRESS_NONE (Arulpandiyan Vadivel)
 
 - samples/check-exec: Fix script name (Mickaël Salaün)
 
 - yama: remove needless locking in yama_task_prctl() (Oleg Nesterov)
 
 - lib/string_choices: Sort by function name (R Sundar)
 
 - hardening: Allow default HARDENED_USERCOPY to be set at compile time
   (Mel Gorman)
 
 - uaccess: Split out compile-time checks into ucopysize.h
 
 - kbuild: clang: Support building UM with SUBARCH=i386
 
 - x86: Enable i386 FORTIFY_SOURCE on Clang 16+
 
 - ubsan/overflow: Rework integer overflow sanitizer option
 
 - Add missing __nonstring annotations for callers of memtostr*()/strtomem*()
 
 - Add __must_be_noncstr() and have memtostr*()/strtomem*() check for it
 
 - Introduce __nonstring_array for silencing future GCC 15 warnings
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Merge tag 'hardening-v6.15-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux

Pull hardening updates from Kees Cook:
 "As usual, it's scattered changes all over. Patches touching things
  outside of our traditional areas in the tree have been Acked by
  maintainers or were trivial changes:

   - loadpin: remove unsupported MODULE_COMPRESS_NONE (Arulpandiyan
     Vadivel)

   - samples/check-exec: Fix script name (Mickaël Salaün)

   - yama: remove needless locking in yama_task_prctl() (Oleg Nesterov)

   - lib/string_choices: Sort by function name (R Sundar)

   - hardening: Allow default HARDENED_USERCOPY to be set at compile
     time (Mel Gorman)

   - uaccess: Split out compile-time checks into ucopysize.h

   - kbuild: clang: Support building UM with SUBARCH=i386

   - x86: Enable i386 FORTIFY_SOURCE on Clang 16+

   - ubsan/overflow: Rework integer overflow sanitizer option

   - Add missing __nonstring annotations for callers of
     memtostr*()/strtomem*()

   - Add __must_be_noncstr() and have memtostr*()/strtomem*() check for
     it

   - Introduce __nonstring_array for silencing future GCC 15 warnings"

* tag 'hardening-v6.15-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux: (26 commits)
  compiler_types: Introduce __nonstring_array
  hardening: Enable i386 FORTIFY_SOURCE on Clang 16+
  x86/build: Remove -ffreestanding on i386 with GCC
  ubsan/overflow: Enable ignorelist parsing and add type filter
  ubsan/overflow: Enable pattern exclusions
  ubsan/overflow: Rework integer overflow sanitizer option to turn on everything
  samples/check-exec: Fix script name
  yama: don't abuse rcu_read_lock/get_task_struct in yama_task_prctl()
  kbuild: clang: Support building UM with SUBARCH=i386
  loadpin: remove MODULE_COMPRESS_NONE as it is no longer supported
  lib/string_choices: Rearrange functions in sorted order
  string.h: Validate memtostr*()/strtomem*() arguments more carefully
  compiler.h: Introduce __must_be_noncstr()
  nilfs2: Mark on-disk strings as nonstring
  uapi: stddef.h: Introduce __kernel_nonstring
  x86/tdx: Mark message.bytes as nonstring
  string: kunit: Mark nonstring test strings as __nonstring
  scsi: qla2xxx: Mark device strings as nonstring
  scsi: mpt3sas: Mark device strings as nonstring
  scsi: mpi3mr: Mark device strings as nonstring
  ...
2025-03-24 15:18:08 -07:00
Linus Torvalds
06961fbbbd move-lib-kunit for v6.15-rc1
- move lib/ selftests into lib/tests/ (Kees Cook, Gabriela Bittencourt,
   Luis Felipe Hernandez, Lukas Bulwahn, Tamir Duberstein)
 
 - lib/math: Add int_log test suite (Bruno Sobreira França)
 
 - lib/math: Add Kunit test suite for gcd() (Yu-Chun Lin)
 
 - lib/tests/kfifo_kunit.c: add tests for the kfifo structure (Diego Vieira)
 
 - unicode: refactor selftests into KUnit (Gabriela Bittencourt)
 
 - lib/prime_numbers: convert self-test to KUnit (Tamir Duberstein)
 
 - printf: convert self-test to KUnit (Tamir Duberstein)
 
 - scanf: convert self-test to KUnit (Tamir Duberstein)
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Merge tag 'move-lib-kunit-v6.15-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux

Pull lib kunit selftest move from Kees Cook:
 "This is a one-off tree to coordinate the move of selftests out of lib/
  and into lib/tests/. A separate tree was used for this to keep the
  paths sane with all the work in the same place.

   - move lib/ selftests into lib/tests/ (Kees Cook, Gabriela
     Bittencourt, Luis Felipe Hernandez, Lukas Bulwahn, Tamir
     Duberstein)

   - lib/math: Add int_log test suite (Bruno Sobreira França)

   - lib/math: Add Kunit test suite for gcd() (Yu-Chun Lin)

   - lib/tests/kfifo_kunit.c: add tests for the kfifo structure (Diego
     Vieira)

   - unicode: refactor selftests into KUnit (Gabriela Bittencourt)

   - lib/prime_numbers: convert self-test to KUnit (Tamir Duberstein)

   - printf: convert self-test to KUnit (Tamir Duberstein)

   - scanf: convert self-test to KUnit (Tamir Duberstein)"

* tag 'move-lib-kunit-v6.15-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux: (21 commits)
  scanf: break kunit into test cases
  scanf: convert self-test to KUnit
  scanf: remove redundant debug logs
  scanf: implicate test line in failure messages
  printf: implicate test line in failure messages
  printf: break kunit into test cases
  printf: convert self-test to KUnit
  kunit/fortify: Replace "volatile" with OPTIMIZER_HIDE_VAR()
  kunit/fortify: Expand testing of __compiletime_strlen()
  kunit/stackinit: Use fill byte different from Clang i386 pattern
  kunit/overflow: Fix DEFINE_FLEX tests for counted_by
  selftests: remove reference to prime_numbers.sh
  MAINTAINERS: adjust entries in FORTIFY_SOURCE and KERNEL HARDENING
  lib/prime_numbers: convert self-test to KUnit
  lib/math: Add Kunit test suite for gcd()
  unicode: kunit: change tests filename and path
  unicode: kunit: refactor selftest to kunit tests
  lib/tests/kfifo_kunit.c: add tests for the kfifo structure
  lib: Move KUnit tests into tests/ subdirectory
  lib/math: Add int_log test suite
  ...
2025-03-24 15:15:11 -07:00
Gabriele Monaco
03abeaa63c Documentation/rv: Add docs for the sched monitors
Add man page and kernel documentation for the sched monitors, as sched
is a container of other monitors, document all in the same page.
sched is the first nested monitor, also explain what is a nested monitor
and how enabling containers or children monitors work.

To: Ingo Molnar <mingo@redhat.com>
To: Peter Zijlstra <peterz@infradead.org>
Cc: Juri Lelli <juri.lelli@redhat.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Jonathan Corbet <corbet@lwn.net>
Cc: John Kacur <jkacur@redhat.com>
Cc: Clark Williams <williams@redhat.com>
Link: https://lore.kernel.org/20250305140406.350227-9-gmonaco@redhat.com
Signed-off-by: Gabriele Monaco <gmonaco@redhat.com>
Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org>
2025-03-24 17:27:40 -04:00
Andrea della Porta
01a1e9d6a0 dt-bindings: PCI: Add common schema for devices accessible through PCI BARs
Common YAML schema for devices that exports internal peripherals through
PCI BARs. The BARs are exposed as simple-buses through which the
peripherals can be accessed.

This is not intended to be used as a standalone binding, but should be
included by device specific bindings.

Signed-off-by: Andrea della Porta <andrea.porta@suse.com>
Reviewed-by: Rob Herring (Arm) <robh@kernel.org>
Reviewed-by: Florian Fainelli <florian.fainelli@broadcom.com>
Signed-off-by: Krzysztof Wilczyński <kwilczynski@kernel.org>
[bhelgaas: fix typo]
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Link: https://lore.kernel.org/r/096ab7addb39e498e28ac2526c07157cc9327c42.1742418429.git.andrea.porta@suse.com
2025-03-24 15:15:03 -05:00
Ryohei Kinugawa
4f34c2b779 docs/kcm: Fix typo "BFP"
'BFP' should be 'BPF'.

Signed-off-by: Ryohei Kinugawa <ryohei.kinugawa@gmail.com>
Link: https://patch.msgid.link/20250318095154.4187952-1-ryohei.kinugawa@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2025-03-24 12:20:42 -07:00
WangYuli
6d1929475e docs: networking: strparser: Fix a typo
The context indicates that 'than' is the correct word instead of 'then',
as a comparison is being performed.

Given that 'then' is also a valid English word, checkpatch.pl wouldn't
have picked up on this spelling error.

This typo was caught by AI during code review.

Suggested-by: Wentao Guan <guanwentao@uniontech.com>
Signed-off-by: WangYuli <wangyuli@uniontech.com>
Reviewed-by: Yanteng Si <si.yanteng@linux.dev>
Link: https://patch.msgid.link/A43BEA49ED5CC6E5+20250318074656.644391-1-wangyuli@uniontech.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2025-03-24 12:14:16 -07:00
Yui Washizu
f8e1bcec62 docs: fix the path of example code and example commands for device memory TCP
This updates the old path and fixes the description of unavailable options.

Signed-off-by: Yui Washizu <yui.washidu@gmail.com>
Reviewed-by: Simon Horman <horms@kernel.org>
Reviewed-by: Mina Almasry <almasrymina@google.com>
Link: https://patch.msgid.link/20250318061251.775191-1-yui.washidu@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2025-03-24 12:12:09 -07:00
Linus Torvalds
aaca83f7b1 vfs-6.15-rc1.sysv
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Merge tag 'vfs-6.15-rc1.sysv' of git://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs

Pull vfs sysv removal from Christian Brauner:
 "This removes the sysv filesystem. We've discussed this various times.

  It's time to try"

* tag 'vfs-6.15-rc1.sysv' of git://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs:
  sysv: Remove the filesystem
2025-03-24 11:35:53 -07:00
Linus Torvalds
26d8e43079 vfs-6.15-rc1.async.dir
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Merge tag 'vfs-6.15-rc1.async.dir' of git://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs

Pull vfs async dir updates from Christian Brauner:
 "This contains cleanups that fell out of the work from async directory
  handling:

   - Change kern_path_locked() and user_path_locked_at() to never return
     a negative dentry. This simplifies the usability of these helpers
     in various places

   - Drop d_exact_alias() from the remaining place in NFS where it is
     still used. This also allows us to drop the d_exact_alias() helper
     completely

   - Drop an unnecessary call to fh_update() from nfsd_create_locked()

   - Change i_op->mkdir() to return a struct dentry

     Change vfs_mkdir() to return a dentry provided by the filesystems
     which is hashed and positive. This allows us to reduce the number
     of cases where the resulting dentry is not positive to very few
     cases. The code in these places becomes simpler and easier to
     understand.

   - Repack DENTRY_* and LOOKUP_* flags"

* tag 'vfs-6.15-rc1.async.dir' of git://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs:
  doc: fix inline emphasis warning
  VFS: Change vfs_mkdir() to return the dentry.
  nfs: change mkdir inode_operation to return alternate dentry if needed.
  fuse: return correct dentry for ->mkdir
  ceph: return the correct dentry on mkdir
  hostfs: store inode in dentry after mkdir if possible.
  Change inode_operations.mkdir to return struct dentry *
  nfsd: drop fh_update() from S_IFDIR branch of nfsd_create_locked()
  nfs/vfs: discard d_exact_alias()
  VFS: add common error checks to lookup_one_qstr_excl()
  VFS: change kern_path_locked() and user_path_locked_at() to never return negative dentry
  VFS: repack LOOKUP_ bit flags.
  VFS: repack DENTRY_ flags.
2025-03-24 10:47:14 -07:00
Linus Torvalds
804382d59b vfs-6.15-rc1.overlayfs
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Merge tag 'vfs-6.15-rc1.overlayfs' of git://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs

Pull vfs overlayfs updates from Christian Brauner:
 "Currently overlayfs uses the mounter's credentials for its
  override_creds() calls. That provides a consistent permission model.

  This patches allows a caller to instruct overlayfs to use its
  credentials instead. The caller must be located in the same user
  namespace hierarchy as the user namespace the overlayfs instance will
  be mounted in. This provides a consistent and simple security model.

  With this it is possible to e.g., mount an overlayfs instance where
  the mounter must have CAP_SYS_ADMIN but the credentials used for
  override_creds() have dropped CAP_SYS_ADMIN. It also allows the usage
  of custom fs{g,u}id different from the callers and other tweaks"

* tag 'vfs-6.15-rc1.overlayfs' of git://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs:
  selftests/ovl: add third selftest for "override_creds"
  selftests/ovl: add second selftest for "override_creds"
  selftests/filesystems: add utils.{c,h}
  selftests/ovl: add first selftest for "override_creds"
  ovl: allow to specify override credentials
2025-03-24 10:37:40 -07:00
Linus Torvalds
0ec0d4ecdd vfs-6.15-rc1.iomap
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Merge tag 'vfs-6.15-rc1.iomap' of git://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs

Pull vfs iomap updates from Christian Brauner:

 - Allow the filesystem to submit the writeback bios.

    - Allow the filsystem to track completions on a per-bio bases
      instead of the entire I/O.

    - Change writeback_ops so that ->submit_bio can be done by the
      filesystem.

    - A new ANON_WRITE flag for writes that don't have a block number
      assigned to them at the iomap level leaving the filesystem to do
      that work in the submission handler.

 - Incremental iterator advance

   The folio_batch support for zero range where the filesystem provides
   a batch of folios to process that might not be logically continguous
   requires more flexibility than the current offset based iteration
   currently offers.

   Update all iomap operations to advance the iterator within the
   operation and thus remove the need to advance from the core iomap
   iterator.

 - Make buffered writes work with RWF_DONTCACHE

   If RWF_DONTCACHE is set for a write, mark the folios being written as
   uncached. On writeback completion the pages will be dropped.

 - Introduce infrastructure for large atomic writes

   This will eventually be used by xfs and ext4.

* tag 'vfs-6.15-rc1.iomap' of git://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs: (42 commits)
  iomap: rework IOMAP atomic flags
  iomap: comment on atomic write checks in iomap_dio_bio_iter()
  iomap: inline iomap_dio_bio_opflags()
  iomap: fix inline data on buffered read
  iomap: Lift blocksize restriction on atomic writes
  iomap: Support SW-based atomic writes
  iomap: Rename IOMAP_ATOMIC -> IOMAP_ATOMIC_HW
  xfs: flag as supporting FOP_DONTCACHE
  iomap: make buffered writes work with RWF_DONTCACHE
  iomap: introduce a full map advance helper
  iomap: rename iomap_iter processed field to status
  iomap: remove unnecessary advance from iomap_iter()
  dax: advance the iomap_iter on pte and pmd faults
  dax: advance the iomap_iter on dedupe range
  dax: advance the iomap_iter on unshare range
  dax: advance the iomap_iter on zero range
  dax: push advance down into dax_iomap_iter() for read and write
  dax: advance the iomap_iter in the read/write path
  iomap: convert misc simple ops to incremental advance
  iomap: advance the iter on direct I/O
  ...
2025-03-24 10:19:31 -07:00
Eric Dumazet
1937a0be28 tcp: move icsk_clean_acked to a better location
As a followup of my presentation in Zagreb for netdev 0x19:

icsk_clean_acked is only used by TCP when/if CONFIG_TLS_DEVICE
is enabled from tcp_ack().

Rename it to tcp_clean_acked, move it to tcp_sock structure
in the tcp_sock_read_rx for better cache locality in TCP
fast path.

Define this field only when CONFIG_TLS_DEVICE is enabled
saving 8 bytes on configs not using it.

Signed-off-by: Eric Dumazet <edumazet@google.com>
Reviewed-by: Neal Cardwell <ncardwell@google.com>
Reviewed-by: Sabrina Dubroca <sd@queasysnail.net>
Reviewed-by: Kuniyuki Iwashima <kuniyu@amazon.com>
Link: https://patch.msgid.link/20250317085313.2023214-1-edumazet@google.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2025-03-24 09:55:18 -07:00
Linus Torvalds
99c21beaab vfs-6.15-rc1.misc
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Merge tag 'vfs-6.15-rc1.misc' of git://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs

Pull misc vfs updates from Christian Brauner:
 "Features:

   - Add CONFIG_DEBUG_VFS infrastucture:
      - Catch invalid modes in open
      - Use the new debug macros in inode_set_cached_link()
      - Use debug-only asserts around fd allocation and install

   - Place f_ref to 3rd cache line in struct file to resolve false
     sharing

Cleanups:

   - Start using anon_inode_getfile_fmode() helper in various places

   - Don't take f_lock during SEEK_CUR if exclusion is guaranteed by
     f_pos_lock

   - Add unlikely() to kcmp()

   - Remove legacy ->remount_fs method from ecryptfs after port to the
     new mount api

   - Remove invalidate_inodes() in favour of evict_inodes()

   - Simplify ep_busy_loopER by removing unused argument

   - Avoid mmap sem relocks when coredumping with many missing pages

   - Inline getname()

   - Inline new_inode_pseudo() and de-staticize alloc_inode()

   - Dodge an atomic in putname if ref == 1

   - Consistently deref the files table with rcu_dereference_raw()

   - Dedup handling of struct filename init and refcounts bumps

   - Use wq_has_sleeper() in end_dir_add()

   - Drop the lock trip around I_NEW wake up in evict()

   - Load the ->i_sb pointer once in inode_sb_list_{add,del}

   - Predict not reaching the limit in alloc_empty_file()

   - Tidy up do_sys_openat2() with likely/unlikely

   - Call inode_sb_list_add() outside of inode hash lock

   - Sort out fd allocation vs dup2 race commentary

   - Turn page_offset() into a wrapper around folio_pos()

   - Remove locking in exportfs around ->get_parent() call

   - try_lookup_one_len() does not need any locks in autofs

   - Fix return type of several functions from long to int in open

   - Fix return type of several functions from long to int in ioctls

  Fixes:

   - Fix watch queue accounting mismatch"

* tag 'vfs-6.15-rc1.misc' of git://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs: (30 commits)
  fs: sort out fd allocation vs dup2 race commentary, take 2
  fs: call inode_sb_list_add() outside of inode hash lock
  fs: tidy up do_sys_openat2() with likely/unlikely
  fs: predict not reaching the limit in alloc_empty_file()
  fs: load the ->i_sb pointer once in inode_sb_list_{add,del}
  fs: drop the lock trip around I_NEW wake up in evict()
  fs: use wq_has_sleeper() in end_dir_add()
  VFS/autofs: try_lookup_one_len() does not need any locks
  fs: dedup handling of struct filename init and refcounts bumps
  fs: consistently deref the files table with rcu_dereference_raw()
  exportfs: remove locking around ->get_parent() call.
  fs: use debug-only asserts around fd allocation and install
  fs: dodge an atomic in putname if ref == 1
  vfs: Remove invalidate_inodes()
  ecryptfs: remove NULL remount_fs from super_operations
  watch_queue: fix pipe accounting mismatch
  fs: place f_ref to 3rd cache line in struct file to resolve false sharing
  epoll: simplify ep_busy_loop by removing always 0 argument
  fs: Turn page_offset() into a wrapper around folio_pos()
  kcmp: improve performance adding an unlikely hint to task comparisons
  ...
2025-03-24 09:13:50 -07:00
Takashi Iwai
a98a9c11a3 ASoC: Updates for v6.15
This is a very big release due to a combination of some big new work,
 mainly new drivers and generic SoundWire support, and some wide ranging
 cleanup work that made small changes to a lot of drivers.
 
  - Morimoto-san has completed the conversion to use modern terminology
    for the clocking configuration, and several other cleanups with
    narrower impact.
  - All the power management operation configuration was updated to use
    current idioms by Takashi Iwai.
  - Clarification of the control operations from Charles Keepax.
  - Prepartory work for more generic SoundWire SCDA controls from Charles
    Keepax.
  - Support for AMD ACP 7.x, AWINC WM88166, Everest ES8388, Intel AVS
    PEAKVOL and GAIN DSP modules Mediatek MT8188 DMIC, NXP i.MX95, nVidia
    Tegra interconnects, Rockchip RK3588 S/PDIF, Texas Instruments
    SN012776 and TAS5770L, and Wolfson WM8904 DMICs,
 
 Some changes from the tip tree adding APIs needed by the AMD code are
 included, these were unfortunately rebased in the tip tree after being
 pulled in.  There's also some regmap changes supporting the SCDA work
 and some devres refactoring that was pulled in to support other changes.
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Merge tag 'asoc-v6.15' of https://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound into for-next

ASoC: Updates for v6.15

This is a very big release due to a combination of some big new work,
mainly new drivers and generic SoundWire support, and some wide ranging
cleanup work that made small changes to a lot of drivers.

 - Morimoto-san has completed the conversion to use modern terminology
   for the clocking configuration, and several other cleanups with
   narrower impact.
 - All the power management operation configuration was updated to use
   current idioms by Takashi Iwai.
 - Clarification of the control operations from Charles Keepax.
 - Prepartory work for more generic SoundWire SCDA controls from Charles
   Keepax.
 - Support for AMD ACP 7.x, AWINC WM88166, Everest ES8388, Intel AVS
   PEAKVOL and GAIN DSP modules Mediatek MT8188 DMIC, NXP i.MX95, nVidia
   Tegra interconnects, Rockchip RK3588 S/PDIF, Texas Instruments
   SN012776 and TAS5770L, and Wolfson WM8904 DMICs,

Some changes from the tip tree adding APIs needed by the AMD code are
included, these were unfortunately rebased in the tip tree after being
pulled in.  There's also some regmap changes supporting the SCDA work
and some devres refactoring that was pulled in to support other changes.
2025-03-24 15:40:24 +01:00
Takashi Iwai
41a5070950 Merge branch 'for-linus' into for-next
Get ready for 6.15 merge window

Signed-off-by: Takashi Iwai <tiwai@suse.de>
2025-03-24 15:39:32 +01:00
Rafael J. Wysocki
7a9072d859 Merge branch 'pm-cpuidle'
Merge cpuidle updates for 6.15-rc5, including a menu governor update
that is reported to improve some benchmark results quite significantly:

 - Update the handling of the most recent idle intervals in the menu
   cpuidle governor to prevent useful information from being discarded
   by it in some cases and improve the prediction accuracy (Rafael
   Wysocki).

 - Make it possible to tell the intel_idle driver to ignore its built-in
   table of idle states for the given processor, clean up the handling
   of auto-demotion disabling on Baytrail and Cherrytrail chips in it,
   and update its MAINTAINERS entry (David Arcari, Artem Bityutskiy,
   Rafael Wysocki).

 - Make some cpuidle drivers use for_each_present_cpu() instead of
   for_each_possible_cpu() during initialization to avoid issues
   occurring when nosmp or maxcpus=0 are used (Jacky Bai).

* pm-cpuidle:
  cpuidle: Init cpuidle only for present CPUs
  cpuidle: intel_idle: Update MAINTAINERS
  intel_idle: introduce 'no_native' module parameter
  cpuidle: menu: Update documentation after get_typical_interval() changes
  cpuidle: menu: Avoid discarding useful information
  cpuidle: menu: Eliminate outliers on both ends of the sample set
  cpuidle: menu: Tweak threshold use in get_typical_interval()
  cpuidle: menu: Use one loop for average and variance computations
  cpuidle: menu: Drop a redundant local variable
  intel_idle: clean up BYT/CHT auto demotion disable
2025-03-24 14:43:30 +01:00
Rafael J. Wysocki
1774be7cfc Merge branch 'pm-cpufreq'
Merge cpufreq updates for 6.15-rc1:

 - Manage sysfs attributes and boost frequencies efficiently from
   cpufreq core to reduce boilerplate code from drivers (Viresh Kumar).

 - Minor cleanups to cpufreq drivers (Aaron Kling, Benjamin Schneider,
   Dhananjay Ugwekar, Imran Shaik, and zuoqian).

 - Migrate some cpufreq drivers to using for_each_present_cpu() (Jacky
   Bai).

 - cpufreq-qcom-hw DT binding fixes (Krzysztof Kozlowski).

 - Use str_enable_disable() helper in cpufreq_online() (Lifeng Zheng).

 - Optimize the amd-pstate driver to avoid cases where call paths end
   up calling the same writes multiple times and needlessly caching
   variables through code reorganization, locking overhaul and tracing
   adjustments (Mario Limonciello, Dhananjay Ugwekar).

 - Make it possible to avoid enabling capacity-aware scheduling (CAS) in
   the intel_pstate driver and relocate a check for out-of-band (OOB)
   platform handling in it to make it detect OOB before checking HWP
   availability (Rafael Wysocki).

 - Fix dbs_update() to avoid inadvertent conversions of negative integer
   values to unsigned int which causes CPU frequency selection to be
   inaccurate in some cases when the "conservative" cpufreq governor is
   in use (Jie Zhan).

* pm-cpufreq: (91 commits)
  dt-bindings: cpufreq: cpufreq-qcom-hw: Narrow properties on SDX75, SA8775p and SM8650
  dt-bindings: cpufreq: cpufreq-qcom-hw: Drop redundant minItems:1
  dt-bindings: cpufreq: cpufreq-qcom-hw: Add missing constraint for interrupt-names
  dt-bindings: cpufreq: cpufreq-qcom-hw: Add QCS8300 compatible
  cpufreq: Init cpufreq only for present CPUs
  cpufreq: tegra186: Share policy per cluster
  cpufreq/amd-pstate: Drop actions in amd_pstate_epp_cpu_offline()
  cpufreq/amd-pstate: Stop caching EPP
  cpufreq/amd-pstate: Rework CPPC enabling
  cpufreq/amd-pstate: Drop debug statements for policy setting
  cpufreq/amd-pstate: Update cppc_req_cached for shared mem EPP writes
  cpufreq/amd-pstate: Move all EPP tracing into *_update_perf and *_set_epp functions
  cpufreq/amd-pstate: Cache CPPC request in shared mem case too
  cpufreq/amd-pstate: Replace all AMD_CPPC_* macros with masks
  cpufreq/amd-pstate-ut: Adjust variable scope
  cpufreq/amd-pstate-ut: Run on all of the correct CPUs
  cpufreq/amd-pstate-ut: Drop SUCCESS and FAIL enums
  cpufreq/amd-pstate-ut: Allow lowest nonlinear and lowest to be the same
  cpufreq/amd-pstate-ut: Use _free macro to free put policy
  cpufreq/amd-pstate: Drop `cppc_cap1_cached`
  ...
2025-03-24 14:19:50 +01:00
Nick Hu
0f920690a8 dt-bindings: timer: Add SiFive CLINT2
Add compatible string and property for the SiFive CLINT v2. The SiFive
CLINT v2 is incompatible with the SiFive CLINT v0 due to differences
in their control methods.

Signed-off-by: Nick Hu <nick.hu@sifive.com>
Reviewed-by: Samuel Holland <samuel.holland@sifive.com>
Acked-by: Conor Dooley <conor.dooley@microchip.com>
Link: https://lore.kernel.org/r/20250321083507.25298-1-nick.hu@sifive.com
Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
2025-03-23 10:55:43 +01:00
Tuomas Ahola
34ceb69edd Documentation/fs/9p: fix broken link
In b529c06f9dc7 (Update the documentation referencing Plan 9 from User
Space., 2020-04-26), another instance of the link was left unfixed.
Fix that as well.

Signed-off-by: Tuomas Ahola <taahol@utu.fi>
Message-ID: <20250322153639.4917-1-taahol@utu.fi>
Signed-off-by: Dominique Martinet <asmadeus@codewreck.org>
2025-03-23 06:20:36 +09:00
Thomas Weißschuh
cacd22ce69 kbuild: make all file references relative to source root
-fmacro-prefix-map only affects __FILE__ and __BASE_FILE__.
Other references, for example in debug information, are not affected.
This makes handling of file references in the compiler outputs harder to
use and creates problems for reproducible builds.

Switch to -ffile-prefix map which affects all references.

Also drop the documentation section advising manual specification of
-fdebug-prefix-map for reproducible builds, as it is not necessary
anymore.

Suggested-by: Ben Hutchings <ben@decadent.org.uk>
Link: https://lore.kernel.org/lkml/c49cc967294f9a3a4a34f69b6a8727a6d3959ed8.camel@decadent.org.uk/
Signed-off-by: Thomas Weißschuh <linux@weissschuh.net>
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
2025-03-22 23:50:58 +09:00
Rafael J. Wysocki
7a6589f1aa ARM cpufreq updates for 6.15
- manage sysfs attributes and boost frequencies efficiently from cpufreq
   core to reduce boilerplate code from drivers (Viresh Kumar).
 
 - Minor cleanups to cpufreq drivers (Aaron Kling, Benjamin Schneider,
   Dhananjay Ugwekar, Imran Shaik, and zuoqian).
 
 - Migrate to using for_each_present_cpu (Jacky Bai).
 
 - cpufreq-qcom-hw DT binding fixes (Krzysztof Kozlowski).
 
 - Use str_enable_disable() helper (Lifeng Zheng).
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Merge tag 'cpufreq-arm-updates-6.15' of git://git.kernel.org/pub/scm/linux/kernel/git/vireshk/pm

Merge ARM cpufreq updates for 6.15 from Viresh Kumar:

"- manage sysfs attributes and boost frequencies efficiently from cpufreq
   core to reduce boilerplate code from drivers (Viresh Kumar).

 - Minor cleanups to cpufreq drivers (Aaron Kling, Benjamin Schneider,
   Dhananjay Ugwekar, Imran Shaik, and zuoqian).

 - Migrate to using for_each_present_cpu (Jacky Bai).

 - cpufreq-qcom-hw DT binding fixes (Krzysztof Kozlowski).

 - Use str_enable_disable() helper (Lifeng Zheng)."

* tag 'cpufreq-arm-updates-6.15' of git://git.kernel.org/pub/scm/linux/kernel/git/vireshk/pm: (59 commits)
  dt-bindings: cpufreq: cpufreq-qcom-hw: Narrow properties on SDX75, SA8775p and SM8650
  dt-bindings: cpufreq: cpufreq-qcom-hw: Drop redundant minItems:1
  dt-bindings: cpufreq: cpufreq-qcom-hw: Add missing constraint for interrupt-names
  dt-bindings: cpufreq: cpufreq-qcom-hw: Add QCS8300 compatible
  cpufreq: Init cpufreq only for present CPUs
  cpufreq: tegra186: Share policy per cluster
  cpufreq: tegra194: Allow building for Tegra234
  cpufreq: enable 1200Mhz clock speed for armada-37xx
  cpufreq: Remove cpufreq_enable_boost_support()
  cpufreq: staticize policy_has_boost_freq()
  cpufreq: qcom: Set .set_boost directly
  cpufreq: dt: Set .set_boost directly
  cpufreq: scmi: Set .set_boost directly
  cpufreq: powernv: Set .set_boost directly
  cpufreq: loongson: Set .set_boost directly
  cpufreq: apple: Set .set_boost directly
  cpufreq: Restrict enabling boost on policies with no boost frequencies
  cpufreq: cppc: Set policy->boost_supported
  cpufreq: amd: Set policy->boost_supported
  cpufreq: acpi: Set policy->boost_supported
  ...
2025-03-22 15:00:00 +01:00
Konrad Dybcio
4b4ab93ddc dt-bindings: remoteproc: Consolidate SC8180X and SM8150 PAS files
SC8180X PAS bindings are plain wrong, resulting in false-positive
dt checker errors. SC8180X's remoteprocs happen to be identical to
SM8150's from the kernel point of view, so reuse that binding instead.

Fixes: 4865ed136045 ("dt-bindings: remoteproc: qcom: pas: Add SC8180X adsp, cdsp and mpss")
Signed-off-by: Konrad Dybcio <konrad.dybcio@oss.qualcomm.com>
Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Acked-by: Rob Herring (Arm) <robh@kernel.org>
Link: https://lore.kernel.org/r/20241116-topic-sc8180x_rproc_bindings-v1-1-ae5d3f7ab261@oss.qualcomm.com
Signed-off-by: Bjorn Andersson <andersson@kernel.org>
2025-03-22 08:42:39 -05:00
Hao Jia
4c8bc7c4e3 cgroup: docs: add pswpin and pswpout items in cgroup v2 doc
The commit 15ff4d409e1a ("mm/memcontrol: add per-memcg pgpgin/pswpin
counter") introduced the pswpin and pswpout items in the memory.stat of
cgroup v2.  Therefore, update them accordingly in the cgroup-v2
documentation.

Link: https://lkml.kernel.org/r/20250318075833.90615-3-jiahao.kernel@gmail.com
Fixes: 15ff4d409e1a ("mm/memcontrol: add per-memcg pgpgin/pswpin counter") 
Signed-off-by: Hao Jia <jiahao1@lixiang.com>
Acked-by: Tejun Heo <tj@kernel.org>
Acked-by: Johannes Weiner <hannes@cmpxchg.org>
Cc: Jonathan Corbet <corbet@lwn.net>
Cc: Michal Hocko <mhocko@kernel.org>
Cc: Michal Koutný <mkoutny@suse.com>
Cc: Muchun Song <muchun.song@linux.dev>
Cc: Roman Gushchin <roman.gushchin@linux.dev>
Cc: Shakeel Butt <shakeel.butt@linux.dev>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
2025-03-21 22:03:16 -07:00
Hao Jia
e452872b40 mm: vmscan: split proactive reclaim statistics from direct reclaim statistics
Patch series "Adding Proactive Memory Reclaim Statistics".

These two patches are related to proactive memory reclaim.

Patch 1 Split proactive reclaim statistics from direct reclaim counters
and introduces new counters: pgsteal_proactive, pgdemote_proactive,
and pgscan_proactive.

Patch 2 Adds pswpin and pswpout items to the cgroup-v2 documentation.


This patch (of 2):

In proactive memory reclaim scenarios, it is necessary to accurately track
proactive reclaim statistics to dynamically adjust the frequency and
amount of memory being reclaimed proactively.  Currently, proactive
reclaim is included in direct reclaim statistics, which can make these
direct reclaim statistics misleading.

Therefore, separate proactive reclaim memory from the direct reclaim
counters by introducing new counters: pgsteal_proactive,
pgdemote_proactive, and pgscan_proactive, to avoid confusion with direct
reclaim.

Link: https://lkml.kernel.org/r/20250318075833.90615-1-jiahao.kernel@gmail.com
Link: https://lkml.kernel.org/r/20250318075833.90615-2-jiahao.kernel@gmail.com
Signed-off-by: Hao Jia <jiahao1@lixiang.com>
Acked-by: Johannes Weiner <hannes@cmpxchg.org>
Cc: Jonathan Corbet <corbet@lwn.net>
Cc: Michal Hocko <mhocko@kernel.org>
Cc: Michal Koutný <mkoutny@suse.com>
Cc: Muchun Song <muchun.song@linux.dev>
Cc: Roman Gushchin <roman.gushchin@linux.dev>
Cc: Shakeel Butt <shakeel.butt@linux.dev>
Cc: Tejun Heo <tj@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
2025-03-21 22:03:16 -07:00
Nhat Pham
af96c610c6 docs/mm/damon/design: document active DAMOS filter type
Document availability and meaning of "active" DAMOS filter type on design
document.  Since introduction of the type requires no additional user ABI,
usage and ABI document need no update.

Link: https://lkml.kernel.org/r/20250318183029.2062917-3-nphamcs@gmail.com
Signed-off-by: Nhat Pham <nphamcs@gmail.com>
Suggested-by: SeongJae Park <sj@kernel.org>
Reviewed-by: SeongJae Park <sj@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
2025-03-21 22:03:15 -07:00
Nico Pache
0bfd458685 MM documentation: add "Unaccepted" meminfo entry
Commit dcdfdd40fa82 ("mm: Add support for unaccepted memory") added a
entry to meminfo but did not document it in the proc.rst file.

This counter tracks the amount of "Unaccepted" guest memory for some
Virtual Machine platforms, such as Intel TDX or AMD SEV-SNP.

Add the missing entry in the documentation.

Link: https://lkml.kernel.org/r/20250317230403.79632-1-npache@redhat.com
Signed-off-by: Nico Pache <npache@redhat.com>
Acked-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Acked-by: David Hildenbrand <david@redhat.com>
Cc: Andrii Nakryiko <andrii@kernel.org>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Jeff Xu <jeffxu@chromium.org>
Cc: Jonathan Corbet <corbet@lwn.net>
Cc: Pasha Tatashin <pasha.tatashin@soleen.com>
Cc: Suren Baghdasaryan <surenb@google.com>
Cc: xu xin <xu.xin16@zte.com.cn>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
2025-03-21 22:03:14 -07:00
Jiwen Qi
9f171d94be docs/mm: Physical Memory: Populate the "Zones" section
Briefly describe what zones are and the fields of struct zone.

Link: https://lkml.kernel.org/r/20250315211317.27612-1-jiwen7.qi@gmail.com
Signed-off-by: Jiwen Qi <jiwen7.qi@gmail.com>
Acked-by: Mike Rapoport (Microsoft) <rppt@kernel.org>
Cc: Bagas Sanjaya <bagasdotme@gmail.com>
Cc: Jonathan Corbet <corbet@lwn.net>
Cc: Randy Dunlap <rdunlap@infradead.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
2025-03-21 22:03:14 -07:00
Nico Pache
835de37603 meminfo: add a per node counter for balloon drivers
Patch series "track memory used by balloon drivers", v2.

This series introduces a way to track memory used by balloon drivers.

Add a NR_BALLOON_PAGES counter to track how many pages are reclaimed by
the balloon drivers.  First add the accounting, then updates the balloon
drivers (virtio, Hyper-V, VMware, Pseries-cmm, and Xen) to maintain this
counter.  The virtio, Vmware, and pseries-cmm balloon drivers utilize the
balloon_compaction interface to allocate and free balloon pages.  Other
balloon drivers will have to maintain this counter manually.

This makes the information visible in memory reporting interfaces like
/proc/meminfo, show_mem, and OOM reporting.

This provides admins visibility into their VM balloon sizes without
requiring different virtualization tooling.  Furthermore, this information
is helpful when debugging an OOM inside a VM.


This patch (of 4):

Add NR_BALLOON_PAGES counter to track memory used by balloon drivers and
expose it through /proc/meminfo and other memory reporting interfaces.

[npache@redhat.com: document Balloon Meminfo entry]
  Link: https://lkml.kernel.org/r/a0315ccf-f244-460e-8643-fd7388724fe5@redhat.com
Link: https://lkml.kernel.org/r/20250314213757.244258-1-npache@redhat.com
Link: https://lkml.kernel.org/r/20250314213757.244258-2-npache@redhat.com
Signed-off-by: Nico Pache <npache@redhat.com>
Cc: Alexander Atanasov <alexander.atanasov@virtuozzo.com>
Cc: Chengming Zhou <chengming.zhou@linux.dev>
Cc: David Hildenbrand <david@redhat.com>
Cc: Dexuan Cui <decui@microsoft.com>
Cc: Haiyang Zhang <haiyangz@microsoft.com>
Cc: Johannes Weiner <hannes@cmpxchg.org>
Cc: Juegren Gross <jgross@suse.com>
Cc: Kanchana P Sridhar <kanchana.p.sridhar@intel.com>
Cc: K. Y. Srinivasan <kys@microsoft.com>
Cc: "Michael S. Tsirkin" <mst@redhat.com>
Cc: Michal Hocko <mhocko@kernel.org>
Cc: Muchun Song <muchun.song@linux.dev>
Cc: Nhat Pham <nphamcs@gmail.com>
Cc: Oleksandr Tyshchenko <oleksandr_tyshchenko@epam.com>
Cc: Roman Gushchin <roman.gushchin@linux.dev>
Cc: Shakeel Butt <shakeel.butt@linux.dev>
Cc: Stefano Stabellini <sstabellini@kernel.org>
Cc: Wei Liu <wei.liu@kernel.org>
Cc: Michael Kelley <mhklinux@outlook.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
2025-03-21 22:03:13 -07:00
Florin Leotescu
a25633a009 dt-bindings: hwmon: Add Microchip emc2305 support
Introduce yaml schema for Microchip emc2305 pwm fan controller.

Signed-off-by: Florin Leotescu <florin.leotescu@nxp.com>
Reviewed-by: Frank Li <Frank.Li@nxp.com>
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Reviewed-by: Rob Herring (Arm) <robh@kernel.org>
Link: https://lore.kernel.org/r/20250321143308.4008623-2-florin.leotescu@oss.nxp.com
[groeck: Fixed comment line length, added 'maxItems: 1'
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2025-03-21 17:06:23 -07:00
Shannon Nelson
4032570706 pds_fwctl: add Documentation entries
Add pds_fwctl to the driver and fwctl documentation pages.

Link: https://patch.msgid.link/r/20250320194412.67983-7-shannon.nelson@amd.com
Reviewed-by: Leon Romanovsky <leonro@nvidia.com>
Signed-off-by: Shannon Nelson <shannon.nelson@amd.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
2025-03-21 20:57:55 -03:00
Dr. David Alan Gilbert
fec04edb74 hwspinlock: Remove unused hwspin_lock_get_id()
hwspin_lock_get_id() has been unused since the original 2011
commit bd9a4c7df256 ("drivers: hwspinlock: add framework")

Remove it and the corresponding docs.

Note that the of_hwspin_lock_get_id() version is still in use,
so leave that alone.

Signed-off-by: Dr. David Alan Gilbert <linux@treblig.org>
Reviewed-by: Baolin Wang <baolin.wang@linux.alibaba.com>
Link: https://lore.kernel.org/r/20241215022023.181435-1-linux@treblig.org
Signed-off-by: Bjorn Andersson <andersson@kernel.org>
2025-03-21 17:12:04 -05:00
Dr. David Alan Gilbert
e9a3682d17 hwspinlock: Remove unused (devm_)hwspin_lock_request()
devm_hwspin_lock_request() was added by 2018's
commit 4f1acd758b08 ("hwspinlock: Add devm_xxx() APIs to request/free
hwlock") however, it's never been used, everyone uses the
devm_hwspin_lock_request_specific() call instead.

Remove it.

Similarly, the none-devm variant isn't used.
Remove it, and the referring documentation.

Signed-off-by: Dr. David Alan Gilbert <linux@treblig.org>
Reviewed-by: Baolin Wang <baolin.wang@linux.alibaba.com>
Link: https://lore.kernel.org/r/20241027205445.239108-1-linux@treblig.org
Signed-off-by: Bjorn Andersson <andersson@kernel.org>
2025-03-21 17:12:04 -05:00
Alistair Francis
2311ab1820 PCI/DOE: Expose DOE features via sysfs
PCIe r6.0 added support for Data Object Exchange (DOE).  When DOE is
supported, the DOE Discovery Feature must be implemented per PCIe r6.1, sec
6.30.1.1. DOE allows a requester to obtain information about the other DOE
features supported by the device.

The kernel already queries the DOE features supported and caches the
values.  Expose the values in sysfs to allow user space to determine which
DOE features are supported by the PCIe device.

By exposing the information to userspace, tools like lspci can relay the
information to users. By listing all of the supported features we can allow
userspace to parse the list, which might include vendor specific features
as well as yet to be supported features.

As the DOE Discovery feature must always be supported we treat it as a
special named attribute case. This allows the usual PCI attribute_group
handling to correctly create the doe_features directory when registering
pci_doe_sysfs_group (otherwise it doesn't and sysfs_add_file_to_group()
will seg fault).

After this patch is supported you can see something like this when
attaching a DOE device:

  $ ls /sys/devices/pci0000:00/0000:00:02.0//doe*
  0001:01        0001:02        doe_discovery

Link: https://lore.kernel.org/r/20250306075211.1855177-3-alistair@alistair23.me
Signed-off-by: Alistair Francis <alistair@alistair23.me>
[bhelgaas: drop pci_doe_sysfs_init() stub return, make
DEVICE_ATTR_RO(doe_discovery) static]
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Reviewed-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2025-03-21 16:36:01 -05:00
Rob Herring (Arm)
065cadf3c8 media: dt-bindings: mediatek,vcodec-encoder: Drop assigned-clock properties
The assigned-clock properties are always allowed on nodes with
'clocks' and generally not required. Additionally the mt8183 doesn't
define them, so they must not be required in that case.

Signed-off-by: "Rob Herring (Arm)" <robh@kernel.org>
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Link: https://lore.kernel.org/r/20250317214621.794674-1-robh@kernel.org
Signed-off-by: Rob Herring (Arm) <robh@kernel.org>
2025-03-21 16:24:29 -05:00