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9608 commits
| Author | SHA1 | Message | Date | |
|---|---|---|---|---|
Linus Torvalds
|
bf4afc53b7 |
Convert 'alloc_obj' family to use the new default GFP_KERNEL argument
This was done entirely with mindless brute force, using
git grep -l '\<k[vmz]*alloc_objs*(.*, GFP_KERNEL)' |
xargs sed -i 's/\(alloc_objs*(.*\), GFP_KERNEL)/\1)/'
to convert the new alloc_obj() users that had a simple GFP_KERNEL
argument to just drop that argument.
Note that due to the extreme simplicity of the scripting, any slightly
more complex cases spread over multiple lines would not be triggered:
they definitely exist, but this covers the vast bulk of the cases, and
the resulting diff is also then easier to check automatically.
For the same reason the 'flex' versions will be done as a separate
conversion.
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Linus Torvalds
|
8934827db5 |
kmalloc_obj treewide refactoring for v7.0-rc1
-----BEGIN PGP SIGNATURE----- iHUEABYKAB0WIQRSPkdeREjth1dHnSE2KwveOeQkuwUCaZl14wAKCRA2KwveOeQk uz8aAQCBFLYlij3Y3ivVADkBxuVF3xECaznFya41ENYsBwlHdwEArXqMyNrw+DiG TvWCK/tiddNmGIRpI2sxBFzyRpsHfAY= =rVD3 -----END PGP SIGNATURE----- Merge tag 'kmalloc_obj-treewide-v7.0-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux Pull kmalloc_obj conversion from Kees Cook: "This does the tree-wide conversion to kmalloc_obj() and friends using coccinelle, with a subsequent small manual cleanup of whitespace alignment that coccinelle does not handle. This uncovered a clang bug in __builtin_counted_by_ref(), so the conversion is preceded by disabling that for current versions of clang. The imminent clang 22.1 release has the fix. I've done allmodconfig build tests for x86_64, arm64, i386, and arm. I did defconfig builds for alpha, m68k, mips, parisc, powerpc, riscv, s390, sparc, sh, arc, csky, xtensa, hexagon, and openrisc" * tag 'kmalloc_obj-treewide-v7.0-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux: kmalloc_obj: Clean up after treewide replacements treewide: Replace kmalloc with kmalloc_obj for non-scalar types compiler_types: Disable __builtin_counted_by_ref for Clang |
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Benjamin Philip
|
bb1c9ccf74 |
scripts: coccicheck: warn on unset debug file
coccicheck prints debug logs to stdout unless a debug file has been set. This makes it hard to read coccinelle's suggested changes, especially for someone new to coccicheck. From this commit, we warn about this behaviour from within the script on an unset debug file. Explicitly setting the debug file to /dev/null suppresses the warning while keeping the default. Signed-off-by: Benjamin Philip <benjamin.philip495@gmail.com> Signed-off-by: Julia Lawall <julia.lawall@inria.fr> |
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Benjamin Philip
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8952cfe431 |
scripts: coccicheck: simplify debug file handling
This commit separates handling unset files and pre-existing files. It also eliminates a duplicated check for unset files in run_cmd_parmap(). Signed-off-by: Benjamin Philip <benjamin.philip495@gmail.com> Signed-off-by: Julia Lawall <julia.lawall@inria.fr> |
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Kees Cook
|
69050f8d6d |
treewide: Replace kmalloc with kmalloc_obj for non-scalar types
This is the result of running the Coccinelle script from scripts/coccinelle/api/kmalloc_objs.cocci. The script is designed to avoid scalar types (which need careful case-by-case checking), and instead replace kmalloc-family calls that allocate struct or union object instances: Single allocations: kmalloc(sizeof(TYPE), ...) are replaced with: kmalloc_obj(TYPE, ...) Array allocations: kmalloc_array(COUNT, sizeof(TYPE), ...) are replaced with: kmalloc_objs(TYPE, COUNT, ...) Flex array allocations: kmalloc(struct_size(PTR, FAM, COUNT), ...) are replaced with: kmalloc_flex(*PTR, FAM, COUNT, ...) (where TYPE may also be *VAR) The resulting allocations no longer return "void *", instead returning "TYPE *". Signed-off-by: Kees Cook <kees@kernel.org> |
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Linus Torvalds
|
2b7a25df82 |
mm.git review status for linus..mm-nonmm-stable
Total patches: 7 Reviews/patch: 0.57 Reviewed rate: 42% - The 2 patch series "two fixes in kho_populate()" from Ran Xiaokai fixes a couple of not-major issues in the kexec handover code. -----BEGIN PGP SIGNATURE----- iHUEABYKAB0WIQTTMBEPP41GrTpTJgfdBJ7gKXxAjgUCaZaKBAAKCRDdBJ7gKXxA jpB1AP9UpNzT63aGDnB6G8pgekSdK/I2gypZI3cS7MpBPorRUgEAhcClc2//zWGK 0Wz1rxh3sWIE/pzd/yOEsv+7oQHeDQA= =oUp2 -----END PGP SIGNATURE----- Merge tag 'mm-nonmm-stable-2026-02-18-19-56' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm Pull more non-MM updates from Andrew Morton: - "two fixes in kho_populate()" fixes a couple of not-major issues in the kexec handover code (Ran Xiaokai) - misc singletons * tag 'mm-nonmm-stable-2026-02-18-19-56' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm: lib/group_cpus: handle const qualifier from clusters allocation type kho: remove unnecessary WARN_ON(err) in kho_populate() kho: fix missing early_memunmap() call in kho_populate() scripts/gdb: implement x86_page_ops in mm.py objpool: fix the overestimation of object pooling metadata size selftests/memfd: use IPC semaphore instead of SIGSTOP/SIGCONT delayacct: fix build regression on accounting tool |
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Linus Torvalds
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956b9cbd7f |
First round of Kbuild fixes for 7.0
- Ensure tools/objtool is cleaned by 'make clean' and 'make mrproper' - Fix test program for CONFIG_CC_CAN_LINK to avoid a warning, which is made fatal by -Werror - Drop explicit LZMA parallel compression in scripts/make_fit.py - Several fixes for commit |
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Nathan Chancellor
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f94711255a
|
kbuild: rpm-pkg: Disable automatic requires for manual debuginfo package
Stefano reports that after commit |
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Linus Torvalds
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a353e7260b |
virtio,vhost,vdpa: features, fixes
- in order support in virtio core - multiple address space support in vduse - fixes, cleanups all over the place, notably - dma alignment fixes for non cache coherent systems Signed-off-by: Michael S. Tsirkin <mst@redhat.com> -----BEGIN PGP SIGNATURE----- iQFDBAABCgAtFiEEXQn9CHHI+FuUyooNKB8NuNKNVGkFAmmO9rYPHG1zdEByZWRo YXQuY29tAAoJECgfDbjSjVRpBzYH/2wUPo3T8/CKGFjF7QSPzgL/UI2NhnP8iSm4 btg1zVnrWmJK6vVIwnf5UsG8dFKsMcp/BEGCewTmIddNM2wEeSul0kKDXtIzrK/U jdA9bJrUKLMeU7IFKne1Fip/yE+5nkWJttWXXyVRJtOJrYxZlkWfqSns3qYcPvsG g7HXvF6tmici5uoKdRCLqHtQCWsvpnvTD5A7qoZAlEUjlQCDKKmuukpN9oK5UYLl 9uUOgPQAJaxIwx1C4uP7L+AwbLUcN/+MtrvQRNz+sFpP3sN9oXeDJKBpNQp109NB JGk1sUsINL+54Cmdd5RwZ9T1vBJyRDrdWRDy1yHj95LildaPfh0= =pnob -----END PGP SIGNATURE----- Merge tag 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost Pull virtio updates from Michael Tsirkin: - in-order support in virtio core - multiple address space support in vduse - fixes, cleanups all over the place, notably dma alignment fixes for non-cache-coherent systems * tag 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost: (59 commits) vduse: avoid adding implicit padding vhost: fix caching attributes of MMIO regions by setting them explicitly vdpa/mlx5: update MAC address handling in mlx5_vdpa_set_attr() vdpa/mlx5: reuse common function for MAC address updates vdpa/mlx5: update mlx_features with driver state check crypto: virtio: Replace package id with numa node id crypto: virtio: Remove duplicated virtqueue_kick in virtio_crypto_skcipher_crypt_req crypto: virtio: Add spinlock protection with virtqueue notification Documentation: Add documentation for VDUSE Address Space IDs vduse: bump version number vduse: add vq group asid support vduse: merge tree search logic of IOTLB_GET_FD and IOTLB_GET_INFO ioctls vduse: take out allocations from vduse_dev_alloc_coherent vduse: remove unused vaddr parameter of vduse_domain_free_coherent vduse: refactor vdpa_dev_add for goto err handling vhost: forbid change vq groups ASID if DRIVER_OK is set vdpa: document set_group_asid thread safety vduse: return internal vq group struct as map token vduse: add vq group support vduse: add v1 API definition ... |
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Nathan Chancellor
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afdfb71c01
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kbuild: rpm-pkg: Fix manual debuginfo generation when using .src.rpm
Commit |
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Nathan Chancellor
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ffe9ac1ad5
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kernel: rpm-pkg: Restore find-debuginfo.sh approach to -debuginfo package
Commit |
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Nathan Chancellor
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6d6b8b0e28
|
kbuild: rpm-pkg: Restrict manual debug package creation
Commit |
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Chen-Yu Tsai
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59f18d88d9
|
scripts/make_fit.py: Drop explicit LZMA parallel compression
Parallel compression for LZMA was added using the plzip tool. However
plzip produces lzip format output, which is different from the raw LZMA
format that the lzma tool produces. This causes depthcharge (the second
stage bootloader on Chromebooks) to fail to load the payload.
Drop the explicit LZMA parallel compression toolchain. If the lzma tool
on the build machine is from xz-utils, then there's a chance parallel
compression is already enabled.
The xz-utils manpage says the following for the -T (threads) argument:
Specify the number of worker threads to use. Setting threads to a
special value 0 makes xz use up to as many threads as the processor(s)
on the system support. The actual number of threads can be fewer than
threads if the input file is not big enough for threading with the
given settings or if using more threads would exceed the memory usage
limit.
[...]
The default value for threads is 0. In xz 5.4.x and older the default
is 1.
Fixes:
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Mickaël Salaün
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be55899b71
|
kbuild: Fix CC_CAN_LINK detection
Most samples cannot be build on some environments because they depend
on CC_CAN_LINK, which is set according to the result of
scripts/cc-can-link.sh called by cc_can_link_user.
Because cc-can-link.sh must now build without warning, it may fail
because it is calling printf() with an empty string:
+ cat
+ gcc -m32 -Werror -Wl,--fatal-warnings -x c - -o /dev/null
<stdin>: In function ‘main’:
<stdin>:4:9: error: zero-length gnu_printf format string [-Werror=format-zero-length]
cc1: all warnings being treated as errors
Fix this warning and the samples build by actually printing something.
Cc: stable@vger.kernel.org
Fixes:
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Seongjun Hong
|
55f8b4518d |
scripts/gdb: implement x86_page_ops in mm.py
Implement all member functions of x86_page_ops strictly following the logic of aarch64_page_ops. This includes full support for SPARSEMEM and standard page translation functions. This fixes compatibility with 'lx-' commands on x86_64, preventing AttributeErrors when using lx-pfn_to_page and others. Link: https://lkml.kernel.org/r/20260202034241.649268-1-hsj0512@snu.ac.kr Signed-off-by: Seongjun Hong <hsj0512@snu.ac.kr> Cc: Jan Kiszka <jan.kiszka@siemens.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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Linus Torvalds
|
136114e0ab |
mm.git review status for linus..mm-nonmm-stable
Total patches: 107 Reviews/patch: 1.07 Reviewed rate: 67% - The 2 patch series "ocfs2: give ocfs2 the ability to reclaim suballocator free bg" from Heming Zhao saves disk space by teaching ocfs2 to reclaim suballocator block group space. - The 4 patch series "Add ARRAY_END(), and use it to fix off-by-one bugs" from Alejandro Colomar adds the ARRAY_END() macro and uses it in various places. - The 2 patch series "vmcoreinfo: support VMCOREINFO_BYTES larger than PAGE_SIZE" from Pnina Feder makes the vmcore code future-safe, if VMCOREINFO_BYTES ever exceeds the page size. - The 7 patch series "kallsyms: Prevent invalid access when showing module buildid" from Petr Mladek cleans up kallsyms code related to module buildid and fixes an invalid access crash when printing backtraces. - The 3 patch series "Address page fault in ima_restore_measurement_list()" from Harshit Mogalapalli fixes a kexec-related crash that can occur when booting the second-stage kernel on x86. - The 6 patch series "kho: ABI headers and Documentation updates" from Mike Rapoport updates the kexec handover ABI documentation. - The 4 patch series "Align atomic storage" from Finn Thain adds the __aligned attribute to atomic_t and atomic64_t definitions to get natural alignment of both types on csky, m68k, microblaze, nios2, openrisc and sh. - The 2 patch series "kho: clean up page initialization logic" from Pratyush Yadav simplifies the page initialization logic in kho_restore_page(). - The 6 patch series "Unload linux/kernel.h" from Yury Norov moves several things out of kernel.h and into more appropriate places. - The 7 patch series "don't abuse task_struct.group_leader" from Oleg Nesterov removes the usage of ->group_leader when it is "obviously unnecessary". - The 5 patch series "list private v2 & luo flb" from Pasha Tatashin adds some infrastructure improvements to the live update orchestrator. -----BEGIN PGP SIGNATURE----- iHUEABYKAB0WIQTTMBEPP41GrTpTJgfdBJ7gKXxAjgUCaY4giAAKCRDdBJ7gKXxA jgusAQDnKkP8UWTqXPC1jI+OrDJGU5ciAx8lzLeBVqMKzoYk9AD/TlhT2Nlx+Ef6 0HCUHUD0FMvAw/7/Dfc6ZKxwBEIxyww= =mmsH -----END PGP SIGNATURE----- Merge tag 'mm-nonmm-stable-2026-02-12-10-48' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm Pull non-MM updates from Andrew Morton: - "ocfs2: give ocfs2 the ability to reclaim suballocator free bg" saves disk space by teaching ocfs2 to reclaim suballocator block group space (Heming Zhao) - "Add ARRAY_END(), and use it to fix off-by-one bugs" adds the ARRAY_END() macro and uses it in various places (Alejandro Colomar) - "vmcoreinfo: support VMCOREINFO_BYTES larger than PAGE_SIZE" makes the vmcore code future-safe, if VMCOREINFO_BYTES ever exceeds the page size (Pnina Feder) - "kallsyms: Prevent invalid access when showing module buildid" cleans up kallsyms code related to module buildid and fixes an invalid access crash when printing backtraces (Petr Mladek) - "Address page fault in ima_restore_measurement_list()" fixes a kexec-related crash that can occur when booting the second-stage kernel on x86 (Harshit Mogalapalli) - "kho: ABI headers and Documentation updates" updates the kexec handover ABI documentation (Mike Rapoport) - "Align atomic storage" adds the __aligned attribute to atomic_t and atomic64_t definitions to get natural alignment of both types on csky, m68k, microblaze, nios2, openrisc and sh (Finn Thain) - "kho: clean up page initialization logic" simplifies the page initialization logic in kho_restore_page() (Pratyush Yadav) - "Unload linux/kernel.h" moves several things out of kernel.h and into more appropriate places (Yury Norov) - "don't abuse task_struct.group_leader" removes the usage of ->group_leader when it is "obviously unnecessary" (Oleg Nesterov) - "list private v2 & luo flb" adds some infrastructure improvements to the live update orchestrator (Pasha Tatashin) * tag 'mm-nonmm-stable-2026-02-12-10-48' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm: (107 commits) watchdog/hardlockup: simplify perf event probe and remove per-cpu dependency procfs: fix missing RCU protection when reading real_parent in do_task_stat() watchdog/softlockup: fix sample ring index wrap in need_counting_irqs() kcsan, compiler_types: avoid duplicate type issues in BPF Type Format kho: fix doc for kho_restore_pages() tests/liveupdate: add in-kernel liveupdate test liveupdate: luo_flb: introduce File-Lifecycle-Bound global state liveupdate: luo_file: Use private list list: add kunit test for private list primitives list: add primitives for private list manipulations delayacct: fix uapi timespec64 definition panic: add panic_force_cpu= parameter to redirect panic to a specific CPU netclassid: use thread_group_leader(p) in update_classid_task() RDMA/umem: don't abuse current->group_leader drm/pan*: don't abuse current->group_leader drm/amd: kill the outdated "Only the pthreads threading model is supported" checks drm/amdgpu: don't abuse current->group_leader android/binder: use same_thread_group(proc->tsk, current) in binder_mmap() android/binder: don't abuse current->group_leader kho: skip memoryless NUMA nodes when reserving scratch areas ... |
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Nathan Chancellor
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df989b01b5 |
Kbuild/Kconfig updates for 7.0
Kbuild changes
==============
* Drop '*_probe' pattern from modpost section check allowlist, which hid
legitimate warnings (Johan Hovold)
* Disable -Wtype-limits altogether, instead of enabling at W=2 (Vincent
Mailhol)
* Improve UAPI testing to skip testing headers that require a libc when
CONFIG_CC_CAN_LINK is not set, opening up testing of headers with no
libc dependencies to more environments (Thomas Weißschuh)
* Update gendwarfksyms documentation with required dependencies (Jihan
LIN)
* Reject invalid LLVM= values to avoid unintentionally falling back to
system toolchain (Thomas Weißschuh)
* Add a script to help run the kernel build process in a container for
consistent environments and testing (Guillaume Tucker)
* Simplify kallsyms by getting rid of the relative base (Ard Biesheuvel)
* Performance and usability improvements to scripts/make_fit.py (Simon
Glass)
* Minor various clean ups and fixes
Kconfig changes
===============
* Move XPM icons to individual files, clearing up GTK deprecation
warnings (Rostislav Krasny)
* Support
depends on FOO if BAR
as syntactic sugar for
depends on FOO || !BAR' (Nicolas Pitre, Graham Roff)
* Refactor merge_config.sh to use awk over shell/sed/grep, dramatically
speeding up processing large number of config fragments (Anders
Roxell, Mikko Rapeli)
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Merge 7.0 Kbuild changes into kbuild-fixes
kbuild-fixes needs to be based on 6.19 to apply some fixes for
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Linus Torvalds
|
098b6e44cb |
Devicetree updates for v7.0:
DT core:
- Sync dtc/libfdt with upstream v1.7.2-62-ga26ef6400bd8
- Add a for_each_compatible_node_scoped() loop and convert users in
cpufreq, dmaengine, clk, cdx, powerpc and Arm
- Simplify of/platform.c with scoped loop helpers
- Add fw_devlink tracking for "mmc-pwrseq"
- Optimize fw_devlink callback code size for pinctrl-N properties
- Replace strcmp_suffix() with strends()
DT bindings:
- Support building single binding targets
- Convert google,goldfish-fb, cznic,turris-mox-rwtm, ti,prm-inst
- Add bindings for Freescale AVIC, Realtek RTD1xxx system controllers,
Microchip 25AA010A EEPROM, OnSemi FIN3385, IEI WT61P803 PUZZLE, Delta
Electronics DPS-800-AB power supply, Infineon IR35221 Digital
Multi-phase Controller, Infineon PXE1610 Digital Dual Output 6+1
VR12.5 & VR13 CPU Controller, socionext,uniphier-smpctrl, and
xlnx,zynqmp-firmware
- Lots of trivial binding fixes to address warnings in DTS files. These
are mostly for arm64 platforms which is getting closer to be warning
free. Some public shaming has helped.
- Fix I2C bus node names in examples
- Drop obsolete brcm,vulcan-soc binding
- Drop unreferenced binding headers
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Merge tag 'devicetree-for-7.0' of git://git.kernel.org/pub/scm/linux/kernel/git/robh/linux
Pull devicetree updates from Rob Herring:
"DT core:
- Sync dtc/libfdt with upstream v1.7.2-62-ga26ef6400bd8
- Add a for_each_compatible_node_scoped() loop and convert users in
cpufreq, dmaengine, clk, cdx, powerpc and Arm
- Simplify of/platform.c with scoped loop helpers
- Add fw_devlink tracking for "mmc-pwrseq"
- Optimize fw_devlink callback code size for pinctrl-N properties
- Replace strcmp_suffix() with strends()
DT bindings:
- Support building single binding targets
- Convert google,goldfish-fb, cznic,turris-mox-rwtm, ti,prm-inst
- Add bindings for Freescale AVIC, Realtek RTD1xxx system
controllers, Microchip 25AA010A EEPROM, OnSemi FIN3385, IEI
WT61P803 PUZZLE, Delta Electronics DPS-800-AB power supply,
Infineon IR35221 Digital Multi-phase Controller, Infineon PXE1610
Digital Dual Output 6+1 VR12.5 & VR13 CPU Controller,
socionext,uniphier-smpctrl, and xlnx,zynqmp-firmware
- Lots of trivial binding fixes to address warnings in DTS files.
These are mostly for arm64 platforms which is getting closer to be
warning free. Some public shaming has helped.
- Fix I2C bus node names in examples
- Drop obsolete brcm,vulcan-soc binding
- Drop unreferenced binding headers"
* tag 'devicetree-for-7.0' of git://git.kernel.org/pub/scm/linux/kernel/git/robh/linux: (60 commits)
dt-bindings: interrupt-controller: Add compatiblie string fsl,imx(1|25|27|31|35)-avic
dt-bindings: soc: imx: add fsl,aips and fsl,emi compatible strings
dt-bindings: display: bridge: lt8912b: Drop reset gpio requirement
dt-bindings: firmware: fsl,scu: Mark multi-channel MU layouts as deprecated
cpufreq: s5pv210: Simplify with scoped for each OF child loop
dmaengine: fsl_raid: Simplify with scoped for each OF child loop
clk: imx: imx31: Simplify with scoped for each OF child loop
clk: imx: imx27: Simplify with scoped for each OF child loop
cdx: Use mutex guard to simplify error handling
cdx: Simplify with scoped for each OF child loop
powerpc/wii: Simplify with scoped for each OF child loop
powerpc/fsp2: Simplify with scoped for each OF child loop
ARM: exynos: Simplify with scoped for each OF child loop
ARM: at91: Simplify with scoped for each OF child loop
of: Add for_each_compatible_node_scoped() helper
dt-bindings: Fix emails with spaces or missing brackets
scripts/dtc: Update to upstream version v1.7.2-62-ga26ef6400bd8
dt-bindings: crypto: inside-secure,safexcel: Mandate only ring IRQs
dt-bindings: crypto: inside-secure,safexcel: Add SoC compatibles
of: reserved_mem: Fix placement of __free() annotation
...
|
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|
Linus Torvalds
|
41f1a08645 |
Kbuild/Kconfig updates for 7.0
Kbuild changes
==============
* Drop '*_probe' pattern from modpost section check allowlist, which hid
legitimate warnings (Johan Hovold)
* Disable -Wtype-limits altogether, instead of enabling at W=2 (Vincent
Mailhol)
* Improve UAPI testing to skip testing headers that require a libc when
CONFIG_CC_CAN_LINK is not set, opening up testing of headers with no
libc dependencies to more environments (Thomas Weißschuh)
* Update gendwarfksyms documentation with required dependencies (Jihan
LIN)
* Reject invalid LLVM= values to avoid unintentionally falling back to
system toolchain (Thomas Weißschuh)
* Add a script to help run the kernel build process in a container for
consistent environments and testing (Guillaume Tucker)
* Simplify kallsyms by getting rid of the relative base (Ard Biesheuvel)
* Performance and usability improvements to scripts/make_fit.py (Simon
Glass)
* Minor various clean ups and fixes
Kconfig changes
===============
* Move XPM icons to individual files, clearing up GTK deprecation
warnings (Rostislav Krasny)
* Support
depends on FOO if BAR
as syntactic sugar for
depends on FOO || !BAR' (Nicolas Pitre, Graham Roff)
* Refactor merge_config.sh to use awk over shell/sed/grep, dramatically
speeding up processing large number of config fragments (Anders
Roxell, Mikko Rapeli)
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Merge tag 'kbuild-7.0-1' of git://git.kernel.org/pub/scm/linux/kernel/git/kbuild/linux
Pull Kbuild/Kconfig updates from Nathan Chancellor:
"Kbuild:
- Drop '*_probe' pattern from modpost section check allowlist, which
hid legitimate warnings (Johan Hovold)
- Disable -Wtype-limits altogether, instead of enabling at W=2
(Vincent Mailhol)
- Improve UAPI testing to skip testing headers that require a libc
when CONFIG_CC_CAN_LINK is not set, opening up testing of headers
with no libc dependencies to more environments (Thomas Weißschuh)
- Update gendwarfksyms documentation with required dependencies
(Jihan LIN)
- Reject invalid LLVM= values to avoid unintentionally falling back
to system toolchain (Thomas Weißschuh)
- Add a script to help run the kernel build process in a container
for consistent environments and testing (Guillaume Tucker)
- Simplify kallsyms by getting rid of the relative base (Ard
Biesheuvel)
- Performance and usability improvements to scripts/make_fit.py
(Simon Glass)
- Minor various clean ups and fixes
Kconfig:
- Move XPM icons to individual files, clearing up GTK deprecation
warnings (Rostislav Krasny)
- Support
depends on FOO if BAR
as syntactic sugar for
depends on FOO || !BAR
(Nicolas Pitre, Graham Roff)
- Refactor merge_config.sh to use awk over shell/sed/grep,
dramatically speeding up processing large number of config
fragments (Anders Roxell, Mikko Rapeli)"
* tag 'kbuild-7.0-1' of git://git.kernel.org/pub/scm/linux/kernel/git/kbuild/linux: (39 commits)
kbuild: remove dependency of run-command on config
scripts/make_fit: Compress dtbs in parallel
scripts/make_fit: Support a few more parallel compressors
kbuild: Support a FIT_EXTRA_ARGS environment variable
scripts/make_fit: Move dtb processing into a function
scripts/make_fit: Support an initial ramdisk
scripts/make_fit: Speed up operation
rust: kconfig: Don't require RUST_IS_AVAILABLE for rustc-option
MAINTAINERS: Add scripts/install.sh into Kbuild entry
modpost: Amend ppc64 save/restfpr symnames for -Os build
MIPS: tools: relocs: Ship a definition of R_MIPS_PC32
streamline_config.pl: remove superfluous exclamation mark
kbuild: dummy-tools: Add python3
scripts: kconfig: merge_config.sh: warn on duplicate input files
scripts: kconfig: merge_config.sh: use awk in checks too
scripts: kconfig: merge_config.sh: refactor from shell/sed/grep to awk
kallsyms: Get rid of kallsyms relative base
mips: Add support for PC32 relocations in vmlinux
Documentation: dev-tools: add container.rst page
scripts: add tool to run containerized builds
...
|
||
|
Linus Torvalds
|
2b398c0562 |
asm-generic header updates for 7.0
A series from Thomas Weißschuh cleans up the UAPI header files to no longer contain any references to Kconfig symbols, as these make no sense in userspace. The build-time check for these was originally added by Sam Ravnborg in linux-2.6.28, and a later version started warning for all newly added CONFIG_* checks here but kept a list of known exceptions. With the last exceptions gone from that list, the warning is now unconditional in 'make headers_install'. John Garry contributed a cleanup of cpumask_of_node(). -----BEGIN PGP SIGNATURE----- iQIzBAABCgAdFiEEo6/YBQwIrVS28WGKmmx57+YAGNkFAmmLZAEACgkQmmx57+YA GNlvfQ//fIzdyYgAMMwV5JuRbODjzE3nUtOwHjCEF9IJfgO0sNdJ/qPSmiZJY8ic vcvrX1C+5G6Mck3/RTsOMemC36sTX9/V0+v06lgktmol2ZrOzzyXV7bCQhHrNdyd OnV3MKZkJOMvAzmdVo21GqQe9O0iG9nUfwJOPMO9B/4p8SePnlbvgrDAJZfVM9QB uDvjtLNySFhAhxnuAhSoDNTE+ssRDWO5q5pvHnKMyqwJFMaEFqadf1OU9Jrvmnw2 pv15TqgHuAYCMaDlAGF/9IagbKJBFFnR0KP/19YtHuFAKhGxBbClZ0MlM/BlJIRC poxs0V4a9KCJDIvUaLYwz5kLpaEObLLWNSdnbrPvm2ZCw9LZH3uUVHbBrcjX+Vrq 0KT2nUW+1y6qKkFetchLM6CIo6+QzWM2Jb18j0X3QX89w/7S4Ki/JBK/QeK85SOT uTleUblTZbafhYMlvQthKTclR/IPs/mxHsgEi7VhfethFUP7qCExeUTBFyUnme4m FdCmSdTXSGE+UiJZyTTRHMppDU3rXz15yBbHt2/wImimIjBKXDfvBT2DVKy4KTmO /zvwXizcPwiSV058xxOnv+w6aLe2t2mMGd7OOwBP4r7Nm/rxOI4jERhdUX4NO/Zl mgnsbUEx+CDKa8gB2JxK1hihciHDW9ICps5ne7yuhe7ccAGCjps= =A57a -----END PGP SIGNATURE----- Merge tag 'asm-generic-7.0' of git://git.kernel.org/pub/scm/linux/kernel/git/arnd/asm-generic Pull asm-generic header updates from Arnd Bergmann: "A series from Thomas Weißschuh cleans up the UAPI header files to no longer contain any references to Kconfig symbols, as these make no sense in userspace. The build-time check for these was originally added by Sam Ravnborg in linux-2.6.28, and a later version started warning for all newly added CONFIG_* checks here but kept a list of known exceptions. With the last exceptions gone from that list, the warning is now unconditional in 'make headers_install'. John Garry contributed a cleanup of cpumask_of_node()" * tag 'asm-generic-7.0' of git://git.kernel.org/pub/scm/linux/kernel/git/arnd/asm-generic: scripts: headers_install.sh: Remove config leak ignore machinery x86/uapi: Stop leaking kconfig references to userspace nios2: uapi: Remove custom asm/swab.h from UAPI ARM: uapi: Drop PSR_ENDSTATE ARC: Always use SWAPE instructions for __arch_swab32() include/asm-generic/topology.h: Remove unused definition of cpumask_of_node() |
||
|
Linus Torvalds
|
f1c538ca81 |
Updates for the VDSO subsystem:
- Provide the missing 64-bit variant of clock_getres()
This allows the extension of CONFIG_COMPAT_32BIT_TIME to the vDSO and
finally the removal of 32-bit time types from the kernel and UAPI.
- Remove the useless and broken getcpu_cache from the VDSO
The intention was to provide a trivial way to retrieve the CPU number from
the VDSO, but as the VDSO data is per process there is no way to make it
work.
- Switch get/put_unaligned() from packed struct to memcpy()
The packed struct violates strict aliasing rules which requires to pass
-fno-strict-aliasing to the compiler. As this are scalar values
__builtin_memcpy() turns them into simple loads and stores
- Use __typeof_unqual__() for __unqual_scalar_typeof()
The get/put_unaligned() changes triggered a new sparse warning when __beNN
types are used with get/put_unaligned() as sparse builds add a special
'bitwise' attribute to them which prevents sparse to evaluate the Generic
in __unqual_scalar_typeof().
Newer sparse versions support __typeof_unqual__() which avoids the problem,
but requires a recent sparse install. So this adds a sanity check to sparse
builds, which validates that sparse is available and capable of handling it.
- Force inline __cvdso_clock_getres_common()
Compilers sometimes un-inline agressively, which results in function call
overhead and problems with automatic stack variable initialization.
Interestingly enough the force inlining results in smaller code than the
un-inlined variant produced by GCC when optimizing for size.
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Merge tag 'timers-vdso-2026-02-09' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull VDSO updates from Thomas Gleixner:
- Provide the missing 64-bit variant of clock_getres()
This allows the extension of CONFIG_COMPAT_32BIT_TIME to the vDSO and
finally the removal of 32-bit time types from the kernel and UAPI.
- Remove the useless and broken getcpu_cache from the VDSO
The intention was to provide a trivial way to retrieve the CPU number
from the VDSO, but as the VDSO data is per process there is no way to
make it work.
- Switch get/put_unaligned() from packed struct to memcpy()
The packed struct violates strict aliasing rules which requires to
pass -fno-strict-aliasing to the compiler. As this are scalar values
__builtin_memcpy() turns them into simple loads and stores
- Use __typeof_unqual__() for __unqual_scalar_typeof()
The get/put_unaligned() changes triggered a new sparse warning when
__beNN types are used with get/put_unaligned() as sparse builds add a
special 'bitwise' attribute to them which prevents sparse to evaluate
the Generic in __unqual_scalar_typeof().
Newer sparse versions support __typeof_unqual__() which avoids the
problem, but requires a recent sparse install. So this adds a sanity
check to sparse builds, which validates that sparse is available and
capable of handling it.
- Force inline __cvdso_clock_getres_common()
Compilers sometimes un-inline agressively, which results in function
call overhead and problems with automatic stack variable
initialization.
Interestingly enough the force inlining results in smaller code than
the un-inlined variant produced by GCC when optimizing for size.
* tag 'timers-vdso-2026-02-09' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
vdso/gettimeofday: Force inlining of __cvdso_clock_getres_common()
x86/percpu: Make CONFIG_USE_X86_SEG_SUPPORT work with sparse
compiler: Use __typeof_unqual__() for __unqual_scalar_typeof()
powerpc/vdso: Provide clock_getres_time64()
tools headers: Remove unneeded ignoring of warnings in unaligned.h
tools headers: Update the linux/unaligned.h copy with the kernel sources
vdso: Switch get/put_unaligned() from packed struct to memcpy()
parisc: Inline a type punning version of get_unaligned_le32()
vdso: Remove struct getcpu_cache
MIPS: vdso: Provide getres_time64() for 32-bit ABIs
arm64: vdso32: Provide clock_getres_time64()
ARM: VDSO: Provide clock_getres_time64()
ARM: VDSO: Patch out __vdso_clock_getres() if unavailable
x86/vdso: Provide clock_getres_time64() for x86-32
selftests: vDSO: vdso_test_abi: Add test for clock_getres_time64()
selftests: vDSO: vdso_test_abi: Use UAPI system call numbers
selftests: vDSO: vdso_config: Add configurations for clock_getres_time64()
vdso: Add prototype for __vdso_clock_getres_time64()
|
||
|
Linus Torvalds
|
36ae1c45b2 |
Scheduler changes for v7.0:
Scheduler Kconfig space updates:
- Further consolidate configurable preemption modes: reduce
the number of architectures that are allowed to offer
PREEMPT_NONE and PREEMPT_VOLUNTARY, reducing the number
of preemption models from four to just two: 'full' and 'lazy'
on up-to-date architectures (arm64, loongarch, powerpc,
riscv, s390, x86).
None and voluntary are only available as legacy features
on platforms that don't implement lazy preemption yet,
or which don't even support preemption.
The goal is to eventually remove cond_resched() and
voluntary preemption altogether.
(Peter Zijlstra)
RSEQ based 'scheduler time slice extension' support:
This allows a thread to request a time slice extension when it
enters a critical section to avoid contention on a resource when
the thread is scheduled out inside of the critical section.
- Add fields and constants for time slice extension
- Provide static branch for time slice extensions
- Add statistics for time slice extensions
- Add prctl() to enable time slice extensions
- Implement sys_rseq_slice_yield()
- Implement syscall entry work for time slice extensions
- Implement time slice extension enforcement timer
- Reset slice extension when scheduled
- Implement rseq_grant_slice_extension()
- entry: Hook up rseq time slice extension
- selftests: Implement time slice extension test
(Thomas Gleixner)
- Allow registering RSEQ with slice extension
- Move slice_ext_nsec to debugfs
- Lower default slice extension
- selftests/rseq: Add rseq slice histogram script
(Peter Zijlstra)
Scheduler performance/scalability improvements:
- Update rq->avg_idle when a task is moved to an idle CPU,
which improves the scalability of various workloads.
(Shubhang Kaushik)
- Reorder fields in 'struct rq' for better caching
(Blake Jones)
- Fair scheduler SMP NOHZ balancing code speedups:
- Move checking for nohz cpus after time check
- Change likelyhood of nohz.nr_cpus
- Remove nohz.nr_cpus and use weight of cpumask instead
(Shrikanth Hegde)
- Avoid false sharing for sched_clock_irqtime (Wangyang Guo)
- Drop useless cpumask_empty() in find_energy_efficient_cpu()
- Simplify task_numa_find_cpu()
- Use cpumask_weight_and() in sched_balance_find_dst_group()
(Yury Norov)
DL scheduler updates:
- Add a deadline server for sched_ext tasks (by Andrea Righi and
Joel Fernandes, with fixes by Peter Zijlstra)
RT scheduler updates:
- Skip currently executing CPU in rto_next_cpu() (Chen Jinghuang)
Entry code updates and performance improvements, which is part of the
scheduler tree in this cycle due to interdependencies with the RSEQ
based time slice extension work:
- Remove unused syscall argument from syscall_trace_enter()
- Rework syscall_exit_to_user_mode_work() for architecture reuse
- Add arch_ptrace_report_syscall_entry/exit()
- Inline syscall_exit_work() and syscall_trace_enter()
(Jinjie Ruan)
Scheduler core updates:
- Rework sched_class::wakeup_preempt() and rq_modified_*()
- Avoid rq->lock bouncing in sched_balance_newidle()
- Rename rcu_dereference_check_sched_domain() =>
rcu_dereference_sched_domain()
- <linux/compiler_types.h>: Add the __signed_scalar_typeof() helper
(Peter Zijlstra)
Fair scheduler updates/refactoring:
- Fold the sched_avg update
- Change rcu_dereference_check_sched_domain() to rcu-sched
- Switch to rcu_dereference_all()
- Remove superfluous rcu_read_lock()
- Limit hrtick work
(Peter Zijlstra)
- Join two #ifdef CONFIG_FAIR_GROUP_SCHED blocks
- Clean up comments in 'struct cfs_rq'
- Separate se->vlag from se->vprot
- Rename cfs_rq::avg_load to cfs_rq::sum_weight
- Rename cfs_rq::avg_vruntime to ::sum_w_vruntime & helper functions
- Introduce and use the vruntime_cmp() and vruntime_op() wrappers
for wrapped-signed aritmetics
- Sort out 'blocked_load*' namespace noise
(Ingo Molnar)
Scheduler debugging code updates:
- Export hidden tracepoints to modules (Gabriele Monaco)
- Convert copy_from_user() + kstrtouint() to kstrtouint_from_user()
(Fushuai Wang)
- Add assertions to QUEUE_CLASS (Peter Zijlstra)
- hrtimer: Fix tracing oddity (Thomas Gleixner)
Misc fixes and cleanups:
- Re-evaluate scheduling when migrating queued tasks out of
throttled cgroups (Zicheng Qu)
- Remove task_struct->faults_disabled_mapping (Christoph Hellwig)
- Fix math notation errors in avg_vruntime comment (Zhan Xusheng)
- sched/cpufreq: Use %pe format for PTR_ERR() printing (zenghongling)
Signed-off-by: Ingo Molnar <mingo@kernel.org>
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Merge tag 'sched-core-2026-02-09' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull scheduler updates from Ingo Molnar:
"Scheduler Kconfig space updates:
- Further consolidate configurable preemption modes (Peter Zijlstra)
Reduce the number of architectures that are allowed to offer
PREEMPT_NONE and PREEMPT_VOLUNTARY, reducing the number of
preemption models from four to just two: 'full' and 'lazy' on
up-to-date architectures (arm64, loongarch, powerpc, riscv, s390,
x86).
None and voluntary are only available as legacy features on
platforms that don't implement lazy preemption yet, or which don't
even support preemption.
The goal is to eventually remove cond_resched() and voluntary
preemption altogether.
RSEQ based 'scheduler time slice extension' support (Thomas Gleixner
and Peter Zijlstra):
This allows a thread to request a time slice extension when it enters
a critical section to avoid contention on a resource when the thread
is scheduled out inside of the critical section.
- Add fields and constants for time slice extension
- Provide static branch for time slice extensions
- Add statistics for time slice extensions
- Add prctl() to enable time slice extensions
- Implement sys_rseq_slice_yield()
- Implement syscall entry work for time slice extensions
- Implement time slice extension enforcement timer
- Reset slice extension when scheduled
- Implement rseq_grant_slice_extension()
- entry: Hook up rseq time slice extension
- selftests: Implement time slice extension test
- Allow registering RSEQ with slice extension
- Move slice_ext_nsec to debugfs
- Lower default slice extension
- selftests/rseq: Add rseq slice histogram script
Scheduler performance/scalability improvements:
- Update rq->avg_idle when a task is moved to an idle CPU, which
improves the scalability of various workloads (Shubhang Kaushik)
- Reorder fields in 'struct rq' for better caching (Blake Jones)
- Fair scheduler SMP NOHZ balancing code speedups (Shrikanth Hegde):
- Move checking for nohz cpus after time check
- Change likelyhood of nohz.nr_cpus
- Remove nohz.nr_cpus and use weight of cpumask instead
- Avoid false sharing for sched_clock_irqtime (Wangyang Guo)
- Cleanups (Yury Norov):
- Drop useless cpumask_empty() in find_energy_efficient_cpu()
- Simplify task_numa_find_cpu()
- Use cpumask_weight_and() in sched_balance_find_dst_group()
DL scheduler updates:
- Add a deadline server for sched_ext tasks (by Andrea Righi and Joel
Fernandes, with fixes by Peter Zijlstra)
RT scheduler updates:
- Skip currently executing CPU in rto_next_cpu() (Chen Jinghuang)
Entry code updates and performance improvements (Jinjie Ruan)
This is part of the scheduler tree in this cycle due to inter-
dependencies with the RSEQ based time slice extension work:
- Remove unused syscall argument from syscall_trace_enter()
- Rework syscall_exit_to_user_mode_work() for architecture reuse
- Add arch_ptrace_report_syscall_entry/exit()
- Inline syscall_exit_work() and syscall_trace_enter()
Scheduler core updates (Peter Zijlstra):
- Rework sched_class::wakeup_preempt() and rq_modified_*()
- Avoid rq->lock bouncing in sched_balance_newidle()
- Rename rcu_dereference_check_sched_domain() =>
rcu_dereference_sched_domain()
- <linux/compiler_types.h>: Add the __signed_scalar_typeof() helper
Fair scheduler updates/refactoring (Peter Zijlstra and Ingo Molnar):
- Fold the sched_avg update
- Change rcu_dereference_check_sched_domain() to rcu-sched
- Switch to rcu_dereference_all()
- Remove superfluous rcu_read_lock()
- Limit hrtick work
- Join two #ifdef CONFIG_FAIR_GROUP_SCHED blocks
- Clean up comments in 'struct cfs_rq'
- Separate se->vlag from se->vprot
- Rename cfs_rq::avg_load to cfs_rq::sum_weight
- Rename cfs_rq::avg_vruntime to ::sum_w_vruntime & helper functions
- Introduce and use the vruntime_cmp() and vruntime_op() wrappers for
wrapped-signed aritmetics
- Sort out 'blocked_load*' namespace noise
Scheduler debugging code updates:
- Export hidden tracepoints to modules (Gabriele Monaco)
- Convert copy_from_user() + kstrtouint() to kstrtouint_from_user()
(Fushuai Wang)
- Add assertions to QUEUE_CLASS (Peter Zijlstra)
- hrtimer: Fix tracing oddity (Thomas Gleixner)
Misc fixes and cleanups:
- Re-evaluate scheduling when migrating queued tasks out of throttled
cgroups (Zicheng Qu)
- Remove task_struct->faults_disabled_mapping (Christoph Hellwig)
- Fix math notation errors in avg_vruntime comment (Zhan Xusheng)
- sched/cpufreq: Use %pe format for PTR_ERR() printing
(zenghongling)"
* tag 'sched-core-2026-02-09' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (64 commits)
sched: Re-evaluate scheduling when migrating queued tasks out of throttled cgroups
sched/cpufreq: Use %pe format for PTR_ERR() printing
sched/rt: Skip currently executing CPU in rto_next_cpu()
sched/clock: Avoid false sharing for sched_clock_irqtime
selftests/sched_ext: Add test for DL server total_bw consistency
selftests/sched_ext: Add test for sched_ext dl_server
sched/debug: Fix dl_server (re)start conditions
sched/debug: Add support to change sched_ext server params
sched_ext: Add a DL server for sched_ext tasks
sched/debug: Stop and start server based on if it was active
sched/debug: Fix updating of ppos on server write ops
sched/deadline: Clear the defer params
entry: Inline syscall_exit_work() and syscall_trace_enter()
entry: Add arch_ptrace_report_syscall_entry/exit()
entry: Rework syscall_exit_to_user_mode_work() for architecture reuse
entry: Remove unused syscall argument from syscall_trace_enter()
sched: remove task_struct->faults_disabled_mapping
sched: Update rq->avg_idle when a task is moved to an idle CPU
selftests/rseq: Add rseq slice histogram script
hrtimer: Fix trace oddity
...
|
||
|
Linus Torvalds
|
0923fd0419 |
Locking updates for v6.20:
Lock debugging:
- Implement compiler-driven static analysis locking context
checking, using the upcoming Clang 22 compiler's context
analysis features. (Marco Elver)
We removed Sparse context analysis support, because prior to
removal even a defconfig kernel produced 1,700+ context
tracking Sparse warnings, the overwhelming majority of which
are false positives. On an allmodconfig kernel the number of
false positive context tracking Sparse warnings grows to
over 5,200... On the plus side of the balance actual locking
bugs found by Sparse context analysis is also rather ... sparse:
I found only 3 such commits in the last 3 years. So the
rate of false positives and the maintenance overhead is
rather high and there appears to be no active policy in
place to achieve a zero-warnings baseline to move the
annotations & fixers to developers who introduce new code.
Clang context analysis is more complete and more aggressive
in trying to find bugs, at least in principle. Plus it has
a different model to enabling it: it's enabled subsystem by
subsystem, which results in zero warnings on all relevant
kernel builds (as far as our testing managed to cover it).
Which allowed us to enable it by default, similar to other
compiler warnings, with the expectation that there are no
warnings going forward. This enforces a zero-warnings baseline
on clang-22+ builds. (Which are still limited in distribution,
admittedly.)
Hopefully the Clang approach can lead to a more maintainable
zero-warnings status quo and policy, with more and more
subsystems and drivers enabling the feature. Context tracking
can be enabled for all kernel code via WARN_CONTEXT_ANALYSIS_ALL=y
(default disabled), but this will generate a lot of false positives.
( Having said that, Sparse support could still be added back,
if anyone is interested - the removal patch is still
relatively straightforward to revert at this stage. )
Rust integration updates: (Alice Ryhl, Fujita Tomonori, Boqun Feng)
- Add support for Atomic<i8/i16/bool> and replace most Rust native
AtomicBool usages with Atomic<bool>
- Clean up LockClassKey and improve its documentation
- Add missing Send and Sync trait implementation for SetOnce
- Make ARef Unpin as it is supposed to be
- Add __rust_helper to a few Rust helpers as a preparation for
helper LTO
- Inline various lock related functions to avoid additional
function calls.
WW mutexes:
- Extend ww_mutex tests and other test-ww_mutex updates (John Stultz)
Misc fixes and cleanups:
- rcu: Mark lockdep_assert_rcu_helper() __always_inline
(Arnd Bergmann)
- locking/local_lock: Include more missing headers (Peter Zijlstra)
- seqlock: fix scoped_seqlock_read kernel-doc (Randy Dunlap)
- rust: sync: Replace `kernel::c_str!` with C-Strings
(Tamir Duberstein)
Signed-off-by: Ingo Molnar <mingo@kernel.org>
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Merge tag 'locking-core-2026-02-08' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull locking updates from Ingo Molnar:
"Lock debugging:
- Implement compiler-driven static analysis locking context checking,
using the upcoming Clang 22 compiler's context analysis features
(Marco Elver)
We removed Sparse context analysis support, because prior to
removal even a defconfig kernel produced 1,700+ context tracking
Sparse warnings, the overwhelming majority of which are false
positives. On an allmodconfig kernel the number of false positive
context tracking Sparse warnings grows to over 5,200... On the plus
side of the balance actual locking bugs found by Sparse context
analysis is also rather ... sparse: I found only 3 such commits in
the last 3 years. So the rate of false positives and the
maintenance overhead is rather high and there appears to be no
active policy in place to achieve a zero-warnings baseline to move
the annotations & fixers to developers who introduce new code.
Clang context analysis is more complete and more aggressive in
trying to find bugs, at least in principle. Plus it has a different
model to enabling it: it's enabled subsystem by subsystem, which
results in zero warnings on all relevant kernel builds (as far as
our testing managed to cover it). Which allowed us to enable it by
default, similar to other compiler warnings, with the expectation
that there are no warnings going forward. This enforces a
zero-warnings baseline on clang-22+ builds (Which are still limited
in distribution, admittedly)
Hopefully the Clang approach can lead to a more maintainable
zero-warnings status quo and policy, with more and more subsystems
and drivers enabling the feature. Context tracking can be enabled
for all kernel code via WARN_CONTEXT_ANALYSIS_ALL=y (default
disabled), but this will generate a lot of false positives.
( Having said that, Sparse support could still be added back,
if anyone is interested - the removal patch is still
relatively straightforward to revert at this stage. )
Rust integration updates: (Alice Ryhl, Fujita Tomonori, Boqun Feng)
- Add support for Atomic<i8/i16/bool> and replace most Rust native
AtomicBool usages with Atomic<bool>
- Clean up LockClassKey and improve its documentation
- Add missing Send and Sync trait implementation for SetOnce
- Make ARef Unpin as it is supposed to be
- Add __rust_helper to a few Rust helpers as a preparation for
helper LTO
- Inline various lock related functions to avoid additional function
calls
WW mutexes:
- Extend ww_mutex tests and other test-ww_mutex updates (John
Stultz)
Misc fixes and cleanups:
- rcu: Mark lockdep_assert_rcu_helper() __always_inline (Arnd
Bergmann)
- locking/local_lock: Include more missing headers (Peter Zijlstra)
- seqlock: fix scoped_seqlock_read kernel-doc (Randy Dunlap)
- rust: sync: Replace `kernel::c_str!` with C-Strings (Tamir
Duberstein)"
* tag 'locking-core-2026-02-08' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (90 commits)
locking/rwlock: Fix write_trylock_irqsave() with CONFIG_INLINE_WRITE_TRYLOCK
rcu: Mark lockdep_assert_rcu_helper() __always_inline
compiler-context-analysis: Remove __assume_ctx_lock from initializers
tomoyo: Use scoped init guard
crypto: Use scoped init guard
kcov: Use scoped init guard
compiler-context-analysis: Introduce scoped init guards
cleanup: Make __DEFINE_LOCK_GUARD handle commas in initializers
seqlock: fix scoped_seqlock_read kernel-doc
tools: Update context analysis macros in compiler_types.h
rust: sync: Replace `kernel::c_str!` with C-Strings
rust: sync: Inline various lock related methods
rust: helpers: Move #define __rust_helper out of atomic.c
rust: wait: Add __rust_helper to helpers
rust: time: Add __rust_helper to helpers
rust: task: Add __rust_helper to helpers
rust: sync: Add __rust_helper to helpers
rust: refcount: Add __rust_helper to helpers
rust: rcu: Add __rust_helper to helpers
rust: processor: Add __rust_helper to helpers
...
|
||
|
Linus Torvalds
|
a9aabb3b83 |
Rust changes for v6.20 / v7.0
Toolchain and infrastructure:
- Add '__rust_helper' annotation to the C helpers.
This is needed to inline these helpers into Rust code.
- Remove imports available via the prelude, treewide.
This was possible thanks to a new lint in Klint that Gary has
implemented -- more Klint-related changes, including initial upstream
support, are coming.
- Deduplicate pin-init flags.
'kernel' crate:
- Add support for calling a function exactly once with the new
'do_once_lite!' macro (and 'OnceLite' type).
Based on this, add 'pr_*_once!' macros to print only once.
- Add 'impl_flags!' macro for defining common bitflags operations:
impl_flags!(
/// Represents multiple permissions.
#[derive(Debug, Clone, Default, Copy, PartialEq, Eq)]
pub struct Permissions(u32);
/// Represents a single permission.
#[derive(Debug, Clone, Copy, PartialEq, Eq)]
pub enum Permission {
/// Read permission.
Read = 1 << 0,
/// Write permission.
Write = 1 << 1,
/// Execute permission.
Execute = 1 << 2,
}
);
let mut f: Permissions = Permission::Read | Permission::Write;
assert!(f.contains(Permission::Read));
assert!(!f.contains(Permission::Execute));
f |= Permission::Execute;
assert!(f.contains(Permission::Execute));
let f2: Permissions = Permission::Write | Permission::Execute;
assert!((f ^ f2).contains(Permission::Read));
assert!(!(f ^ f2).contains(Permission::Write));
- 'bug' module: support 'CONFIG_DEBUG_BUGVERBOSE_DETAILED' in the
'warn_on!' macro in order to show the evaluated condition alongside
the file path:
------------[ cut here ]------------
WARNING: [val == 1] linux/samples/rust/rust_minimal.rs:27 at ...
Modules linked in: rust_minimal(+)
- Add safety module with 'unsafe_precondition_assert!' macro, currently
a wrapper for 'debug_assert!', intended to mark the validation of
safety preconditions where possible:
/// # Safety
///
/// The caller must ensure that `index` is less than `N`.
unsafe fn set_unchecked(&mut self, index: usize, value: T) {
unsafe_precondition_assert!(
index < N,
"set_unchecked() requires index ({index}) < N ({N})"
);
...
}
- Add instructions to 'build_assert!' documentation requesting to
always inline functions when used with function arguments.
- 'ptr' module: replace 'build_assert!' with a 'const' one.
- 'rbtree' module: reduce unsafe blocks on pointer derefs.
- 'transmute' module: implement 'FromBytes' and 'AsBytes' for
inhabited ZSTs, and use it in Nova.
- More treewide replacements of 'c_str!' with C string literals.
'macros' crate:
- Rewrite most procedural macros ('module!', 'concat_idents!',
'#[export]', '#[vtable]', '#[kunit_tests]') to use the 'syn' parsing
library which we introduced last cycle, with better diagnostics.
This also allows to support '#[cfg]' properly in the '#[vtable]'
macro, to support arbitrary types in 'module!' macro (not just an
identifier) and to remove several custom parsing helpers we had.
- Use 'quote!' from the recently vendored 'quote' library and remove
our custom one.
The vendored one also allows us to avoid quoting '"' and '{}' inside
the template anymore and editors can now highlight it. In addition,
it improves robustness as it eliminates the need for string quoting
and escaping.
- Use 'pin_init::zeroed()' to simplify KUnit code.
'pin-init' crate:
- Rewrite all procedural macros ('[pin_]init!', '#[pin_data]',
'#[pinned_drop]', 'derive([Maybe]Zeroable)') to use the 'syn' parsing
library which we introduced last cycle, with better diagnostics.
- Implement 'InPlaceWrite' for '&'static mut MaybeUninit<T>'. This
enables users to use external allocation mechanisms such as
'static_cell'.
- Support tuple structs in 'derive([Maybe]Zeroable)'.
- Support attributes on fields in '[pin_]init!' (such as
'#[cfg(...)]').
- Add a '#[default_error(<type>)]' attribute to '[pin_]init!' to
override the default error (when no '? Error' is specified).
- Support packed structs in '[pin_]init!' with
'#[disable_initialized_field_access]'.
- Remove 'try_[pin_]init!' in favor of merging their feature
with '[pin_]init!'. Update the kernel's own 'try_[pin_]init!'
macros to use the 'default_error' attribute.
- Correct 'T: Sized' bounds to 'T: ?Sized' in the generated
'PinnedDrop' check by '#[pin_data]'.
Documentation:
- Conclude the Rust experiment.
MAINTAINERS:
- Add "RUST [RUST-ANALYZER]" entry for the rust-analyzer support. Tamir
and Jesung will take care of it. They have both been active around it
for a while. The new tree will flow through the Rust one.
- Add Gary as maintainer for "RUST [PIN-INIT]".
- Update Boqun and Tamir emails to their kernel.org accounts.
And a few other cleanups and improvements.
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Merge tag 'rust-6.20-7.0' of git://git.kernel.org/pub/scm/linux/kernel/git/ojeda/linux
Pull rust updates from Miguel Ojeda:
"Toolchain and infrastructure:
- Add '__rust_helper' annotation to the C helpers
This is needed to inline these helpers into Rust code
- Remove imports available via the prelude, treewide
This was possible thanks to a new lint in Klint that Gary has
implemented -- more Klint-related changes, including initial
upstream support, are coming
- Deduplicate pin-init flags
'kernel' crate:
- Add support for calling a function exactly once with the new
'do_once_lite!' macro (and 'OnceLite' type)
Based on this, add 'pr_*_once!' macros to print only once
- Add 'impl_flags!' macro for defining common bitflags operations:
impl_flags!(
/// Represents multiple permissions.
#[derive(Debug, Clone, Default, Copy, PartialEq, Eq)]
pub struct Permissions(u32);
/// Represents a single permission.
#[derive(Debug, Clone, Copy, PartialEq, Eq)]
pub enum Permission {
/// Read permission.
Read = 1 << 0,
/// Write permission.
Write = 1 << 1,
/// Execute permission.
Execute = 1 << 2,
}
);
let mut f: Permissions = Permission::Read | Permission::Write;
assert!(f.contains(Permission::Read));
assert!(!f.contains(Permission::Execute));
f |= Permission::Execute;
assert!(f.contains(Permission::Execute));
let f2: Permissions = Permission::Write | Permission::Execute;
assert!((f ^ f2).contains(Permission::Read));
assert!(!(f ^ f2).contains(Permission::Write));
- 'bug' module: support 'CONFIG_DEBUG_BUGVERBOSE_DETAILED' in the
'warn_on!' macro in order to show the evaluated condition alongside
the file path:
------------[ cut here ]------------
WARNING: [val == 1] linux/samples/rust/rust_minimal.rs:27 at ...
Modules linked in: rust_minimal(+)
- Add safety module with 'unsafe_precondition_assert!' macro,
currently a wrapper for 'debug_assert!', intended to mark the
validation of safety preconditions where possible:
/// # Safety
///
/// The caller must ensure that `index` is less than `N`.
unsafe fn set_unchecked(&mut self, index: usize, value: T) {
unsafe_precondition_assert!(
index < N,
"set_unchecked() requires index ({index}) < N ({N})"
);
...
}
- Add instructions to 'build_assert!' documentation requesting to
always inline functions when used with function arguments
- 'ptr' module: replace 'build_assert!' with a 'const' one
- 'rbtree' module: reduce unsafe blocks on pointer derefs
- 'transmute' module: implement 'FromBytes' and 'AsBytes' for
inhabited ZSTs, and use it in Nova
- More treewide replacements of 'c_str!' with C string literals
'macros' crate:
- Rewrite most procedural macros ('module!', 'concat_idents!',
'#[export]', '#[vtable]', '#[kunit_tests]') to use the 'syn'
parsing library which we introduced last cycle, with better
diagnostics
This also allows to support '#[cfg]' properly in the '#[vtable]'
macro, to support arbitrary types in 'module!' macro (not just an
identifier) and to remove several custom parsing helpers we had
- Use 'quote!' from the recently vendored 'quote' library and remove
our custom one
The vendored one also allows us to avoid quoting '"' and '{}'
inside the template anymore and editors can now highlight it. In
addition, it improves robustness as it eliminates the need for
string quoting and escaping
- Use 'pin_init::zeroed()' to simplify KUnit code
'pin-init' crate:
- Rewrite all procedural macros ('[pin_]init!', '#[pin_data]',
'#[pinned_drop]', 'derive([Maybe]Zeroable)') to use the 'syn'
parsing library which we introduced last cycle, with better
diagnostics
- Implement 'InPlaceWrite' for '&'static mut MaybeUninit<T>'. This
enables users to use external allocation mechanisms such as
'static_cell'
- Support tuple structs in 'derive([Maybe]Zeroable)'
- Support attributes on fields in '[pin_]init!' (such as
'#[cfg(...)]')
- Add a '#[default_error(<type>)]' attribute to '[pin_]init!' to
override the default error (when no '? Error' is specified)
- Support packed structs in '[pin_]init!' with
'#[disable_initialized_field_access]'
- Remove 'try_[pin_]init!' in favor of merging their feature with
'[pin_]init!'. Update the kernel's own 'try_[pin_]init!' macros to
use the 'default_error' attribute
- Correct 'T: Sized' bounds to 'T: ?Sized' in the generated
'PinnedDrop' check by '#[pin_data]'
Documentation:
- Conclude the Rust experiment
MAINTAINERS:
- Add "RUST [RUST-ANALYZER]" entry for the rust-analyzer support.
Tamir and Jesung will take care of it. They have both been active
around it for a while. The new tree will flow through the Rust one
- Add Gary as maintainer for "RUST [PIN-INIT]"
- Update Boqun and Tamir emails to their kernel.org accounts
And a few other cleanups and improvements"
* tag 'rust-6.20-7.0' of git://git.kernel.org/pub/scm/linux/kernel/git/ojeda/linux: (59 commits)
rust: safety: introduce `unsafe_precondition_assert!` macro
rust: add `impl_flags!` macro for defining common bitflag operations
rust: print: Add pr_*_once macros
rust: bug: Support DEBUG_BUGVERBOSE_DETAILED option
rust: print: Add support for calling a function exactly once
rust: kbuild: deduplicate pin-init flags
gpu: nova-core: remove imports available via prelude
rust: clk: replace `kernel::c_str!` with C-Strings
MAINTAINERS: Update my email address to @kernel.org
rust: macros: support `#[cfg]` properly in `#[vtable]` macro.
rust: kunit: use `pin_init::zeroed` instead of custom null value
rust: macros: rearrange `#[doc(hidden)]` in `module!` macro
rust: macros: allow arbitrary types to be used in `module!` macro
rust: macros: convert `#[kunit_tests]` macro to use `syn`
rust: macros: convert `concat_idents!` to use `syn`
rust: macros: convert `#[export]` to use `syn`
rust: macros: use `quote!` for `module!` macro
rust: macros: use `syn` to parse `module!` macro
rust: macros: convert `#[vtable]` macro to use `syn`
rust: macros: use `quote!` from vendored crate
...
|
||
|
Linus Torvalds
|
f17b474e36 |
bpf-next-7.0
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Merge tag 'bpf-next-7.0' of git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next
Pull bpf updates from Alexei Starovoitov:
- Support associating BPF program with struct_ops (Amery Hung)
- Switch BPF local storage to rqspinlock and remove recursion detection
counters which were causing false positives (Amery Hung)
- Fix live registers marking for indirect jumps (Anton Protopopov)
- Introduce execution context detection BPF helpers (Changwoo Min)
- Improve verifier precision for 32bit sign extension pattern
(Cupertino Miranda)
- Optimize BTF type lookup by sorting vmlinux BTF and doing binary
search (Donglin Peng)
- Allow states pruning for misc/invalid slots in iterator loops (Eduard
Zingerman)
- In preparation for ASAN support in BPF arenas teach libbpf to move
global BPF variables to the end of the region and enable arena kfuncs
while holding locks (Emil Tsalapatis)
- Introduce support for implicit arguments in kfuncs and migrate a
number of them to new API. This is a prerequisite for cgroup
sub-schedulers in sched-ext (Ihor Solodrai)
- Fix incorrect copied_seq calculation in sockmap (Jiayuan Chen)
- Fix ORC stack unwind from kprobe_multi (Jiri Olsa)
- Speed up fentry attach by using single ftrace direct ops in BPF
trampolines (Jiri Olsa)
- Require frozen map for calculating map hash (KP Singh)
- Fix lock entry creation in TAS fallback in rqspinlock (Kumar
Kartikeya Dwivedi)
- Allow user space to select cpu in lookup/update operations on per-cpu
array and hash maps (Leon Hwang)
- Make kfuncs return trusted pointers by default (Matt Bobrowski)
- Introduce "fsession" support where single BPF program is executed
upon entry and exit from traced kernel function (Menglong Dong)
- Allow bpf_timer and bpf_wq use in all programs types (Mykyta
Yatsenko, Andrii Nakryiko, Kumar Kartikeya Dwivedi, Alexei
Starovoitov)
- Make KF_TRUSTED_ARGS the default for all kfuncs and clean up their
definition across the tree (Puranjay Mohan)
- Allow BPF arena calls from non-sleepable context (Puranjay Mohan)
- Improve register id comparison logic in the verifier and extend
linked registers with negative offsets (Puranjay Mohan)
- In preparation for BPF-OOM introduce kfuncs to access memcg events
(Roman Gushchin)
- Use CFI compatible destructor kfunc type (Sami Tolvanen)
- Add bitwise tracking for BPF_END in the verifier (Tianci Cao)
- Add range tracking for BPF_DIV and BPF_MOD in the verifier (Yazhou
Tang)
- Make BPF selftests work with 64k page size (Yonghong Song)
* tag 'bpf-next-7.0' of git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next: (268 commits)
selftests/bpf: Fix outdated test on storage->smap
selftests/bpf: Choose another percpu variable in bpf for btf_dump test
selftests/bpf: Remove test_task_storage_map_stress_lookup
selftests/bpf: Update task_local_storage/task_storage_nodeadlock test
selftests/bpf: Update task_local_storage/recursion test
selftests/bpf: Update sk_storage_omem_uncharge test
bpf: Switch to bpf_selem_unlink_nofail in bpf_local_storage_{map_free, destroy}
bpf: Support lockless unlink when freeing map or local storage
bpf: Prepare for bpf_selem_unlink_nofail()
bpf: Remove unused percpu counter from bpf_local_storage_map_free
bpf: Remove cgroup local storage percpu counter
bpf: Remove task local storage percpu counter
bpf: Change local_storage->lock and b->lock to rqspinlock
bpf: Convert bpf_selem_unlink to failable
bpf: Convert bpf_selem_link_map to failable
bpf: Convert bpf_selem_unlink_map to failable
bpf: Select bpf_local_storage_map_bucket based on bpf_local_storage
selftests/xsk: fix number of Tx frags in invalid packet
selftests/xsk: properly handle batch ending in the middle of a packet
bpf: Prevent reentrance into call_rcu_tasks_trace()
...
|
||
|
Linus Torvalds
|
a7423e6ea2 |
Modules changes for v7.0-rc1
Module signing:
- Remove SHA-1 support for signing modules. SHA-1 is no longer
considered secure for signatures due to vulnerabilities that can
lead to hash collisions. None of the major distributions use
SHA-1 anymore, and the kernel has defaulted to SHA-512 since
v6.11. Note that loading SHA-1 signed modules is still supported.
- Update scripts/sign-file to use only the OpenSSL CMS API for
signing. As SHA-1 support is gone, we can drop the legacy PKCS#7
API which was limited to SHA-1. This also cleans up support for
legacy OpenSSL versions.
Cleanups and fixes:
- Use system_dfl_wq instead of the per-cpu system_wq following the
ongoing workqueue API refactoring.
- Avoid open-coded kvrealloc() in module decompression logic by
using the standard helper.
- Improve section annotations by replacing the custom __modinit
with __init_or_module and removing several unused __INIT*_OR_MODULE
macros.
- Fix kernel-doc warnings in include/linux/moduleparam.h.
- Ensure set_module_sig_enforced is only declared when module
signing is enabled.
- Fix gendwarfksyms build failures on 32-bit hosts.
MAINTAINERS:
- Update the module subsystem entry to reflect the maintainer
rotation and update the git repository link.
The changes have been soaking in linux-next since -rc2.
Note that like Daniel mentioned in the previous pull request [1], we
rotate maintainership every 6 months, and I will be handling the module
subsystem pull requests for the first half of this year.
Link: https://lore.kernel.org/r/20251203234840.3720-1-da.gomez@kernel.org [1]
Signed-off-by: Sami Tolvanen <samitolvanen@google.com>
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Merge tag 'modules-7.0-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/modules/linux
Pull module updates from Sami Tolvanen:
"Module signing:
- Remove SHA-1 support for signing modules.
SHA-1 is no longer considered secure for signatures due to
vulnerabilities that can lead to hash collisions. None of the major
distributions use SHA-1 anymore, and the kernel has defaulted to
SHA-512 since v6.11.
Note that loading SHA-1 signed modules is still supported.
- Update scripts/sign-file to use only the OpenSSL CMS API for
signing.
As SHA-1 support is gone, we can drop the legacy PKCS#7 API which
was limited to SHA-1. This also cleans up support for legacy
OpenSSL versions.
Cleanups and fixes:
- Use system_dfl_wq instead of the per-cpu system_wq following the
ongoing workqueue API refactoring.
- Avoid open-coded kvrealloc() in module decompression logic by using
the standard helper.
- Improve section annotations by replacing the custom __modinit with
__init_or_module and removing several unused __INIT*_OR_MODULE
macros.
- Fix kernel-doc warnings in include/linux/moduleparam.h.
- Ensure set_module_sig_enforced is only declared when module signing
is enabled.
- Fix gendwarfksyms build failures on 32-bit hosts.
MAINTAINERS:
- Update the module subsystem entry to reflect the maintainer
rotation and update the git repository link"
* tag 'modules-7.0-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/modules/linux:
modules: moduleparam.h: fix kernel-doc comments
module: Only declare set_module_sig_enforced when CONFIG_MODULE_SIG=y
module/decompress: Avoid open-coded kvrealloc()
gendwarfksyms: Fix build on 32-bit hosts
sign-file: Use only the OpenSSL CMS API for signing
module: Remove SHA-1 support for module signing
module: replace use of system_wq with system_dfl_wq
params: Replace __modinit with __init_or_module
module: Remove unused __INIT*_OR_MODULE macros
MAINTAINERS: Update module subsystem maintainers and repository
|
||
|
Linus Torvalds
|
b63c907203 |
keys: Support for ML-DSA module signing
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||
|
Linus Torvalds
|
958f7fb68c |
kmalloc_obj branch for v7.0-rc1
- Introduce kmalloc_obj*() family of type-based allocator APIs - checkpatch: Suggest kmalloc_obj family for sizeof allocations - coccinelle: Add kmalloc_objs conversion script -----BEGIN PGP SIGNATURE----- iHUEABYKAB0WIQRSPkdeREjth1dHnSE2KwveOeQkuwUCaYosbAAKCRA2KwveOeQk u+pzAPwK+re4aOGay+muhKaA5omh0wFz20a/BxjJVcDfp3qBcwEAhG7YGZ2cITH9 7dFgStecoHtvg8eObMq+W4XVwWdmeQQ= =52iK -----END PGP SIGNATURE----- Merge tag 'kmalloc_obj-v7.0-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux Pull kmalloc_obj updates from Kees Cook: "Introduce the kmalloc_obj* family of APIs for switching to type-based kmalloc allocations, away from purely size-based allocations. Discussed on lkml, with you, and at Linux Plumbers. It's been in -next for the entire dev cycle. Before the merge window closes, I'd like to send the treewide change (generated from the Coccinelle script included here), which mechanically converts almost 20k callsites from kmalloc* to kmalloc_obj*: 8007 files changed, 19980 insertions(+), 20838 deletions(-) This change needed fixes for mismatched types (since now the return type from allocations is a pointer to the requested type, not "void *"), and I've been fixing these over the last 4 releases. These fixes have mostly been trivial mismatches with const qualifiers or accidentally identical sizes (e.g. same object size: "struct kvec" vs "struct iovec", or differing pointers to pointers), but I did catch one case of too-small allocation. Summary: - Introduce kmalloc_obj*() family of type-based allocator APIs - checkpatch: Suggest kmalloc_obj family for sizeof allocations - coccinelle: Add kmalloc_objs conversion script" * tag 'kmalloc_obj-v7.0-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux: coccinelle: Add kmalloc_objs conversion script slab: Introduce kmalloc_flex() and family compiler_types: Introduce __flex_counter() and family checkpatch: Suggest kmalloc_obj family for sizeof allocations slab: Introduce kmalloc_obj() and family |
||
|
Linus Torvalds
|
13d83ea9d8 |
Crypto library updates for 7.0
- Add support for verifying ML-DSA signatures.
ML-DSA (Module-Lattice-Based Digital Signature Algorithm) is a
recently-standardized post-quantum (quantum-resistant) signature
algorithm. It was known as Dilithium pre-standardization.
The first use case in the kernel will be module signing. But there
are also other users of RSA and ECDSA signatures in the kernel that
might want to upgrade to ML-DSA eventually.
- Improve the AES library:
- Make the AES key expansion and single block encryption and
decryption functions use the architecture-optimized AES code.
Enable these optimizations by default.
- Support preparing an AES key for encryption-only, using about
half as much memory as a bidirectional key.
- Replace the existing two generic implementations of AES with a
single one.
- Simplify how Adiantum message hashing is implemented. Remove the
"nhpoly1305" crypto_shash in favor of direct lib/crypto/ support for
NH hashing, and enable optimizations by default.
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Merge tag 'libcrypto-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiggers/linux
Pull crypto library updates from Eric Biggers:
- Add support for verifying ML-DSA signatures.
ML-DSA (Module-Lattice-Based Digital Signature Algorithm) is a
recently-standardized post-quantum (quantum-resistant) signature
algorithm. It was known as Dilithium pre-standardization.
The first use case in the kernel will be module signing. But there
are also other users of RSA and ECDSA signatures in the kernel that
might want to upgrade to ML-DSA eventually.
- Improve the AES library:
- Make the AES key expansion and single block encryption and
decryption functions use the architecture-optimized AES code.
Enable these optimizations by default.
- Support preparing an AES key for encryption-only, using about
half as much memory as a bidirectional key.
- Replace the existing two generic implementations of AES with a
single one.
- Simplify how Adiantum message hashing is implemented. Remove the
"nhpoly1305" crypto_shash in favor of direct lib/crypto/ support for
NH hashing, and enable optimizations by default.
* tag 'libcrypto-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiggers/linux: (53 commits)
lib/crypto: mldsa: Clarify the documentation for mldsa_verify() slightly
lib/crypto: aes: Drop 'volatile' from aes_sbox and aes_inv_sbox
lib/crypto: aes: Remove old AES en/decryption functions
lib/crypto: aesgcm: Use new AES library API
lib/crypto: aescfb: Use new AES library API
crypto: omap - Use new AES library API
crypto: inside-secure - Use new AES library API
crypto: drbg - Use new AES library API
crypto: crypto4xx - Use new AES library API
crypto: chelsio - Use new AES library API
crypto: ccp - Use new AES library API
crypto: x86/aes-gcm - Use new AES library API
crypto: arm64/ghash - Use new AES library API
crypto: arm/ghash - Use new AES library API
staging: rtl8723bs: core: Use new AES library API
net: phy: mscc: macsec: Use new AES library API
chelsio: Use new AES library API
Bluetooth: SMP: Use new AES library API
crypto: x86/aes - Remove the superseded AES-NI crypto_cipher
lib/crypto: x86/aes: Add AES-NI optimization
...
|
||
|
Linus Torvalds
|
72c395024d |
A slightly calmer cycle for docs this time around, though there is still a
fair amount going on, including:
- Some signs of life on the long-moribund Japanese translation
- Documentation on policies around the use of generative tools for patch
submissions, and a separate document intended for consumption by
generative tools.
- The completion of the move of the documentation tools to tools/docs. For
now we're leaving a /scripts/kernel-doc symlink behind to avoid breaking
scripts.
- Ongoing build-system work includes the incorporation of documentation in
Python code, better support for documenting variables, and lots of
improvements and fixes.
- Automatic linking of man-page references -- cat(1), for example -- to
the online pages in the HTML build.
...and the usual array of typo fixes and such.
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Merge tag 'docs-7.0' of git://git.kernel.org/pub/scm/linux/kernel/git/docs/linux
Pull documentation updates from Jonathan Corbet:
"A slightly calmer cycle for docs this time around, though there is
still a fair amount going on, including:
- Some signs of life on the long-moribund Japanese translation
- Documentation on policies around the use of generative tools for
patch submissions, and a separate document intended for consumption
by generative tools
- The completion of the move of the documentation tools to
tools/docs. For now we're leaving a /scripts/kernel-doc symlink
behind to avoid breaking scripts
- Ongoing build-system work includes the incorporation of
documentation in Python code, better support for documenting
variables, and lots of improvements and fixes
- Automatic linking of man-page references -- cat(1), for example --
to the online pages in the HTML build
...and the usual array of typo fixes and such"
* tag 'docs-7.0' of git://git.kernel.org/pub/scm/linux/kernel/git/docs/linux: (107 commits)
doc: development-process: add notice on testing
tools: sphinx-build-wrapper: improve its help message
docs: sphinx-build-wrapper: allow -v override -q
docs: kdoc: Fix pdfdocs build for tools
docs: ja_JP: process: translate 'Obtain a current source tree'
docs: fix 're-use' -> 'reuse' in documentation
docs: ioctl-number: fix a typo in ioctl-number.rst
docs: filesystems: ensure proc pid substitutable is complete
docs: automarkup.py: Skip common English words as C identifiers
Documentation: use a source-read extension for the index link boilerplate
docs: parse_features: make documentation more consistent
docs: add parse_features module documentation
docs: jobserver: do some documentation improvements
docs: add jobserver module documentation
docs: kabi: helpers: add documentation for each "enum" value
docs: kabi: helpers: add helper for debug bits 7 and 8
docs: kabi: system_symbols: end docstring phrases with a dot
docs: python: abi_regex: do some improvements at documentation
docs: python: abi_parser: do some improvements at documentation
docs: add kabi modules documentation
...
|
||
|
Kees Cook
|
bdc5071d7f |
coccinelle: Add kmalloc_objs conversion script
Finds and converts sized kmalloc-family of allocations into the typed kmalloc_obj-family of allocations. Link: https://patch.msgid.link/20251203233036.3212363-5-kees@kernel.org Signed-off-by: Kees Cook <kees@kernel.org> |
||
|
Linus Torvalds
|
ef852baaf6 |
RCU changes for v7.0
RCU Tasks Trace:
Re-implement RCU tasks trace in term of SRCU-fast, not only more than 500 lines
of code are saved because of the reimplementation, a new set of API,
rcu_read_{,un}lock_tasks_trace(), becomes possible as well. Compared to the
previous rcu_read_{,un}lock_trace(), the new API avoid the task_struct accesses
thanks to the SRCU-fast semantics. As a result, the old
rcu_read{,un}lock_trace() API is now deprecated.
RCU Torture Test:
- Multiple improvements on kvm-series.sh (parallel run and progress showing
metrics)
- Add context checks to rcu_torture_timer().
- Make config2csv.sh properly handle comments in .boot files.
- Include commit discription in testid.txt.
Miscellaneous RCU changes:
- Reduce synchronize_rcu() latency by reporting GP kthread's CPU QS early.
- Use suitable gfp_flags for the init_srcu_struct_nodes().
- Fix rcu_read_unlock() deadloop due to softirq.
- Correctly compute probability to invoke ->exp_current() in rcutorture.
- Make expedited RCU CPU stall warnings detect stall-end races.
RCU nocb:
- Remove unnecessary WakeOvfIsDeferred wake path and callback overload
handling.
- Extract nocb_defer_wakeup_cancel() helper.
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Merge tag 'rcu.release.v7.0' of git://git.kernel.org/pub/scm/linux/kernel/git/rcu/linux
Pull RCU updates from Boqun Feng:
- RCU Tasks Trace:
Re-implement RCU tasks trace in term of SRCU-fast, not only more than
500 lines of code are saved because of the reimplementation, a new
set of API, rcu_read_{,un}lock_tasks_trace(), becomes possible as
well. Compared to the previous rcu_read_{,un}lock_trace(), the new
API avoid the task_struct accesses thanks to the SRCU-fast semantics.
As a result, the old rcu_read{,un}lock_trace() API is now deprecated.
- RCU Torture Test:
- Multiple improvements on kvm-series.sh (parallel run and
progress showing metrics)
- Add context checks to rcu_torture_timer()
- Make config2csv.sh properly handle comments in .boot files
- Include commit discription in testid.txt
- Miscellaneous RCU changes:
- Reduce synchronize_rcu() latency by reporting GP kthread's
CPU QS early
- Use suitable gfp_flags for the init_srcu_struct_nodes()
- Fix rcu_read_unlock() deadloop due to softirq
- Correctly compute probability to invoke ->exp_current()
in rcutorture
- Make expedited RCU CPU stall warnings detect stall-end races
- RCU nocb:
- Remove unnecessary WakeOvfIsDeferred wake path and callback
overload handling
- Extract nocb_defer_wakeup_cancel() helper
* tag 'rcu.release.v7.0' of git://git.kernel.org/pub/scm/linux/kernel/git/rcu/linux: (25 commits)
rcu/nocb: Extract nocb_defer_wakeup_cancel() helper
rcu/nocb: Remove dead callback overload handling
rcu/nocb: Remove unnecessary WakeOvfIsDeferred wake path
rcu: Reduce synchronize_rcu() latency by reporting GP kthread's CPU QS early
srcu: Use suitable gfp_flags for the init_srcu_struct_nodes()
rcu: Fix rcu_read_unlock() deadloop due to softirq
rcutorture: Correctly compute probability to invoke ->exp_current()
rcu: Make expedited RCU CPU stall warnings detect stall-end races
rcutorture: Add --kill-previous option to terminate previous kvm.sh runs
rcutorture: Prevent concurrent kvm.sh runs on same source tree
torture: Include commit discription in testid.txt
torture: Make config2csv.sh properly handle comments in .boot files
torture: Make kvm-series.sh give run numbers and totals
torture: Make kvm-series.sh give build numbers and totals
torture: Parallelize kvm-series.sh guest-OS execution
rcutorture: Add context checks to rcu_torture_timer()
rcutorture: Test rcu_tasks_trace_expedite_current()
srcu: Create an rcu_tasks_trace_expedite_current() function
checkpatch: Deprecate rcu_read_{,un}lock_trace()
rcu: Update Requirements.rst for RCU Tasks Trace
...
|
||
|
Linus Torvalds
|
7e0b172c80 |
Misc objtool fixes:
- Bump up the Clang minimum version requirements
for livepatch builds, due to Clang assembler
section handling bugs causing silent
miscompilations.
- Strip livepatching symbol artifacts from
non-livepatch modules.
- Fix livepatch build warnings when certain
Clang LTO options are enabled.
- Fix livepatch build error when
CONFIG_MEM_ALLOC_PROFILING_DEBUG=y.
Signed-off-by: Ingo Molnar <mingo@kernel.org>
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Merge tag 'objtool-urgent-2026-02-07' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull objtool fixes from Ingo Molnar::
- Bump up the Clang minimum version requirements for livepatch
builds, due to Clang assembler section handling bugs causing
silent miscompilations
- Strip livepatching symbol artifacts from non-livepatch modules
- Fix livepatch build warnings when certain Clang LTO options
are enabled
- Fix livepatch build error when CONFIG_MEM_ALLOC_PROFILING_DEBUG=y
* tag 'objtool-urgent-2026-02-07' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
objtool/klp: Fix unexported static call key access for manually built livepatch modules
objtool/klp: Fix symbol correlation for orphaned local symbols
livepatch: Free klp_{object,func}_ext data after initialization
livepatch: Fix having __klp_objects relics in non-livepatch modules
livepatch/klp-build: Require Clang assembler >= 20
|
||
Petr Pavlu
|
b525fcaf0a |
livepatch: Free klp_{object,func}_ext data after initialization
The klp_object_ext and klp_func_ext data, which are stored in the __klp_objects and __klp_funcs sections, respectively, are not needed after they are used to create the actual klp_object and klp_func instances. This operation is implemented by the init function in scripts/livepatch/init.c. Prefix the two sections with ".init" so they are freed after the module is initializated. Signed-off-by: Petr Pavlu <petr.pavlu@suse.com> Acked-by: Joe Lawrence <joe.lawrence@redhat.com> Acked-by: Miroslav Benes <mbenes@suse.cz> Reviewed-by: Aaron Tomlin <atomlin@atomlin.com> Link: https://patch.msgid.link/20260123102825.3521961-3-petr.pavlu@suse.com Signed-off-by: Josh Poimboeuf <jpoimboe@kernel.org> |
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Petr Pavlu
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ab10815472 |
livepatch: Fix having __klp_objects relics in non-livepatch modules
The linker script scripts/module.lds.S specifies that all input
__klp_objects sections should be consolidated into an output section of
the same name, and start/stop symbols should be created to enable
scripts/livepatch/init.c to locate this data.
This start/stop pattern is not ideal for modules because the symbols are
created even if no __klp_objects input sections are present.
Consequently, a dummy __klp_objects section also appears in the
resulting module. This unnecessarily pollutes non-livepatch modules.
Instead, since modules are relocatable files, the usual method for
locating consolidated data in a module is to read its section table.
This approach avoids the aforementioned problem.
The klp_modinfo already stores a copy of the entire section table with
the final addresses. Introduce a helper function that
scripts/livepatch/init.c can call to obtain the location of the
__klp_objects section from this data.
Fixes:
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Krzysztof Kozlowski
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620097c6c0 |
of: Add for_each_compatible_node_scoped() helper
Just like looping through children and available children, add a scoped helper for for_each_compatible_node() so error paths can drop of_node_put() leading to simpler code. Suggested-by: Jonathan Cameron <jonathan.cameron@huawei.com> Reviewed-by: Jonathan Cameron <jonathan.cameron@huawei.com> Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@oss.qualcomm.com> Link: https://patch.msgid.link/20260109-of-for-each-compatible-scoped-v3-1-c22fa2c0749a@oss.qualcomm.com Signed-off-by: Rob Herring (Arm) <robh@kernel.org> |
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Rob Herring (Arm)
|
dfe057874b |
scripts/dtc: Update to upstream version v1.7.2-62-ga26ef6400bd8
This adds the following commits from upstream: a26ef6400bd8 Restore phandle references from __fixups__ node 05c524db44ff Restore phandle references from __local_fixups__ node db65a3a3f4f0 Restore labels from __symbols__ node 64330c682cac Improve type guessing when compiling to dts format cbb48690c697 Set DTSF_PLUGIN if needed when compiling from dtb ef3b1baf6370 Emit /plugin/ when compiling to .dts with DTSF_PLUGIN set 7c78c8542d73 Added empty node name check 14dd76b96732 fdtdump: Change FDT_PROP prob handling to ease future addition 9a1c801a1a3c Fix discarded const qualifiers 194ac9422ac9 libfdt: fdt_get_name: Add can_assume(VALID_DTB) check 39cae0bd0031 libfdt: Improve size savings in FDT_RO_PROBE slightly b12692473298 libfdt: libfdt_internal.h correct final comment in ASSUME block 7f3184a6c550 libfdt: Remove old MacOS strnlen workaround 9197f1ccd95c checks: Do not check overlays for alias paths e1284ee5dc20 livetree: Add only new data to fixup nodes instead of complete regeneration cba90ce82064 checks: Remove check for graph child addresses 763c6ab4189c livetree: Simplify append_to_property() 739403f22242 libfdt: Drop including string.h from libfdt_internal.h 1c6c51e51b29 Consider drive letters when checking for absolute paths on Windows. 617f3d9b60f7 ci: Add Cirrus CI configuration for FreeBSD testing 04f948e83fef ci: Add GitLab CI configuration for Linux builds e89680263137 ci: Tweaks to GitHub Actions setup 2ad738722b79 build: Add FreeBSD and non-GNU linker compatibility 4132ac08ba95 libfdt: Document most remaining functions 33e66ec845b8 tests: Add compatibility with uutils a0dd7b608102 fdtput: Use strtol() in preference to sscanf() 5b71660724d7 tests: Work around limitation in FreeBSD's printf(1) The graph_child_address check has been removed from upstream. Drop it from the makefiles. Signed-off-by: Rob Herring (Arm) <robh@kernel.org> |
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Simon Glass
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c7c88b20cd
|
scripts/make_fit: Compress dtbs in parallel
When there are 1500 device tree files it takes quite a while to compress them. Do it in parallel. Signed-off-by: Simon Glass <sjg@chromium.org> Link: https://patch.msgid.link/20260106162738.2605574-7-sjg@chromium.org Signed-off-by: Nathan Chancellor <nathan@kernel.org> |
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Simon Glass
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fcdcf22a34
|
scripts/make_fit: Support a few more parallel compressors
Add support for pbzip2, xz and plzip which can compress in parallel. This speeds up the ramdisk compression. Signed-off-by: Simon Glass <sjg@chromium.org> Reviewed-by: Nicolas Schier <nsc@kernel.org> Link: https://patch.msgid.link/20260106162738.2605574-6-sjg@chromium.org Signed-off-by: Nathan Chancellor <nathan@kernel.org> |
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Simon Glass
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9a329df6e0
|
kbuild: Support a FIT_EXTRA_ARGS environment variable
In some cases it is useful to be able to pass additional flags to the make_fit.py script. For example, since ramdisks are typically large, passing -E to use external data can be helpful. Add a new FIT_EXTRA_ARGS variable for this. Signed-off-by: Simon Glass <sjg@chromium.org> Reviewed-by: Nicolas Schier <nsc@kernel.org> Reviewed-by: Thomas Weißschuh <thomas.weissschuh@linutronix.de> Link: https://patch.msgid.link/20260106162738.2605574-5-sjg@chromium.org Signed-off-by: Nathan Chancellor <nathan@kernel.org> |
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Simon Glass
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873c283698
|
scripts/make_fit: Move dtb processing into a function
Since build_fit() is getting quite long, move the dtb processing into a separate function. Change the double quotes in the write() call to single, to match the rest of the script. Signed-off-by: Simon Glass <sjg@chromium.org> Reviewed-by: Nicolas Schier <nsc@kernel.org> Reviewed-by: Ahmad Fatoum <a.fatoum@pengutronix.de> Reviewed-by: Chen-Yu Tsai <wenst@chromium.org> Link: https://patch.msgid.link/20260106162738.2605574-4-sjg@chromium.org Signed-off-by: Nathan Chancellor <nathan@kernel.org> |
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Simon Glass
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26428e7dd6
|
scripts/make_fit: Support an initial ramdisk
FIT (Flat Image Tree) allows a ramdisk to be included in each configuration. Add support for this to the script. This feature is not available via 'make image.fit' since the ramdisk likely needs to be built separately anyway, e.g. using modules from the kernel build. Future work may provide support for doing that. Note that the uncompressed size is not correct when a ramdisk is used, since it is too expensive to decompress the ramdisk. Signed-off-by: Simon Glass <sjg@chromium.org> Reviewed-by: Nicolas Schier <nsc@kernel.org> Reviewed-by: Ahmad Fatoum <a.fatoum@pengutronix.de> Link: https://patch.msgid.link/20260106162738.2605574-3-sjg@chromium.org Signed-off-by: Nathan Chancellor <nathan@kernel.org> |
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Simon Glass
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621fd65adc
|
scripts/make_fit: Speed up operation
The kernel is likely at least 16MB so we may as well use that as a step size when reallocating space for the FIT in memory. Pack the FIT at the end, so there is no wasted space. This reduces the time to pack by an order of magnitude, or so. Signed-off-by: Simon Glass <sjg@chromium.org> Reviewed-by: Nicolas Schier <nsc@kernel.org> Reviewed-by: Ahmad Fatoum <a.fatoum@pengutronix.de> Tested-by: Chen-Yu Tsai <wenst@chromium.org> Link: https://patch.msgid.link/20260106162738.2605574-2-sjg@chromium.org Signed-off-by: Nathan Chancellor <nathan@kernel.org> |
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Matthew Maurer
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f2445d6f26
|
rust: kconfig: Don't require RUST_IS_AVAILABLE for rustc-option
The final version of this macro does not fail in the absence of an invokable `$(RUSTC)`, so we don't need to be careful not to invoke it. Link: https://lore.kernel.org/all/CAGSQo01mQfcU1EiW53be1hcts0c1p-HQAab_HBk6VcVmhq3n2Q@mail.gmail.com/ Signed-off-by: Matthew Maurer <mmaurer@google.com> Link: https://patch.msgid.link/20250909-docrem-v1-1-dcc69059a5cb@google.com Signed-off-by: Nathan Chancellor <nathan@kernel.org> |
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René Rebe
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3cd9763ce4
|
modpost: Amend ppc64 save/restfpr symnames for -Os build
Building a size optimized ppc64 kernel (-Os), gcc emits more FP save/restore symbols, that the linker generates on demand into the .sfpr section. Explicitly allow-list those in scripts/mod/modpost.c, too. They are needed for the amdgpu in-kernel floating point support. MODPOST Module.symvers ERROR: modpost: "_restfpr_20" [drivers/gpu/drm/amd/amdgpu/amdgpu.ko] undefined! ERROR: modpost: "_restfpr_26" [drivers/gpu/drm/amd/amdgpu/amdgpu.ko] undefined! ERROR: modpost: "_restfpr_22" [drivers/gpu/drm/amd/amdgpu/amdgpu.ko] undefined! ERROR: modpost: "_savegpr1_27" [drivers/gpu/drm/amd/amdgpu/amdgpu.ko] undefined! ERROR: modpost: "_savegpr1_25" [drivers/gpu/drm/amd/amdgpu/amdgpu.ko] undefined! ERROR: modpost: "_restfpr_28" [drivers/gpu/drm/amd/amdgpu/amdgpu.ko] undefined! ERROR: modpost: "_savegpr1_29" [drivers/gpu/drm/amd/amdgpu/amdgpu.ko] undefined! ERROR: modpost: "_savefpr_20" [drivers/gpu/drm/amd/amdgpu/amdgpu.ko] undefined! ERROR: modpost: "_savefpr_22" [drivers/gpu/drm/amd/amdgpu/amdgpu.ko] undefined! ERROR: modpost: "_restfpr_15" [drivers/gpu/drm/amd/amdgpu/amdgpu.ko] undefined! WARNING: modpost: suppressed 56 unresolved symbol warnings because there were too many) Signed-off-by: René Rebe <rene@exactco.de> Link: https://patch.msgid.link/20251123.131330.407910684435629198.rene@exactco.de Signed-off-by: Nathan Chancellor <nathan@kernel.org> |
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Peter Zijlstra
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3e4067169c |
Linux 6.19-rc8
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Diego Viola
|
72043cf7f1
|
streamline_config.pl: remove superfluous exclamation mark
In order to make the output cleaner and more consistent with other scripts. Signed-off-by: Diego Viola <diego.viola@gmail.com> Link: https://patch.msgid.link/20260202054541.17399-1-diego.viola@gmail.com Signed-off-by: Nathan Chancellor <nathan@kernel.org> |
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David Howells
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0ad9a71933 |
modsign: Enable ML-DSA module signing
Allow ML-DSA module signing to be enabled. Note that OpenSSL's CMS_*() function suite does not, as of OpenSSL-3.6, support the use of CMS_NOATTR with ML-DSA, so the prohibition against using signedAttrs with module signing has to be removed. The selected digest then applies only to the algorithm used to calculate the digest stored in the messageDigest attribute. The OpenSSL development branch has patches applied that fix this[1], but it appears that that will only be available in OpenSSL-4. [1] https://github.com/openssl/openssl/pull/28923 sign-file won't set CMS_NOATTR if openssl is earlier than v4, resulting in the use of signed attributes. The ML-DSA algorithm takes the raw data to be signed without regard to what digest algorithm is specified in the CMS message. The CMS specified digest algorithm is ignored unless signedAttrs are used; in such a case, only SHA512 is permitted. Signed-off-by: David Howells <dhowells@redhat.com> cc: Jarkko Sakkinen <jarkko@kernel.org> cc: Eric Biggers <ebiggers@kernel.org> cc: Lukas Wunner <lukas@wunner.de> cc: Ignat Korchagin <ignat@cloudflare.com> cc: Stephan Mueller <smueller@chronox.de> cc: Herbert Xu <herbert@gondor.apana.org.au> cc: keyrings@vger.kernel.org cc: linux-crypto@vger.kernel.org |
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Linus Torvalds
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969b5726ac |
Miscellaneous objtool fixes:
- Fix a build error on ia32-x86_64 cross builds
- Replace locally open coded ALIGN_UP(), ALIGN_UP_POW2()
and MAX(), which, beyond being duplicates, the
ALIGN_UP_POW2() is also buggy.
- Fix objtool klp-diff regression caused by a recent
change to the bug table format.
- Fix klp-build vs CONFIG_MODULE_SRCVERSION_ALL build
failure.
Signed-off-by: Ingo Molnar <mingo@kernel.org>
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Merge tag 'objtool-urgent-2026-02-01' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull objtool fixes from Ingo Molnar:
- Fix a build error on ia32-x86_64 cross builds
- Replace locally open coded ALIGN_UP(), ALIGN_UP_POW2()
and MAX(), which, beyond being duplicates, the
ALIGN_UP_POW2() is also buggy
- Fix objtool klp-diff regression caused by a recent
change to the bug table format
- Fix klp-build vs CONFIG_MODULE_SRCVERSION_ALL build
failure
* tag 'objtool-urgent-2026-02-01' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
livepatch/klp-build: Fix klp-build vs CONFIG_MODULE_SRCVERSION_ALL
objtool/klp: Fix bug table handling for __WARN_printf()
objtool: Replace custom macros in elf.c with shared ones
objtool: Print bfd_vma as unsigned long long on ia32-x86_64 cross build
|
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Eric Dumazet
|
cc20650a09 |
scripts/bloat-o-meter: ignore __noinstr_text_start
__noinstr_text_start is adding noise to the script, ignore it. For instance using __always_inline on __skb_incr_checksum_unnecessary and CC=clang build. Before this patch, __noinstr_text_start can show up and confuse us. $ scripts/bloat-o-meter -t vmlinux.old vmlinux.new add/remove: 0/2 grow/shrink: 3/0 up/down: 212/-206 (6) Function old new delta tcp6_gro_complete 208 283 +75 tcp4_gro_complete 376 449 +73 __noinstr_text_start 3536 3600 +64 __pfx___skb_incr_checksum_unnecessary 32 - -32 __skb_incr_checksum_unnecessary 174 - -174 Total: Before=25509464, After=25509470, chg +0.00% After this patch we have a more precise result. $ scripts/bloat-o-meter -t vmlinux.old vmlinux.new add/remove: 0/2 grow/shrink: 2/0 up/down: 148/-206 (-58) Function old new delta tcp6_gro_complete 208 283 +75 tcp4_gro_complete 376 449 +73 __pfx___skb_incr_checksum_unnecessary 32 - -32 __skb_incr_checksum_unnecessary 174 - -174 Total: Before=25505928, After=25505870, chg -0.00% Link: https://lkml.kernel.org/r/20260117083448.3877418-1-edumazet@google.com Signed-off-by: Eric Dumazet <edumazet@google.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |