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Commits
| Author | SHA1 | Message | Date | |
|---|---|---|---|---|
 Linus Torvalds
|
334fbe734e |
Merge tag 'mm-stable-2026-04-13-21-45' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
Pull MM updates from Andrew Morton: - "maple_tree: Replace big node with maple copy" (Liam Howlett) Mainly prepararatory work for ongoing development but it does reduce stack usage and is an improvement. - "mm, swap: swap table phase III: remove swap_map" (Kairui Song) Offers memory savings by removing the static swap_map. It also yields some CPU savings and implements several cleanups. - "mm: memfd_luo: preserve file seals" (Pratyush Yadav) File seal preservation to LUO's memfd code - "mm: zswap: add per-memcg stat for incompressible pages" (Jiayuan Chen) Additional userspace stats reportng to zswap - "arch, mm: consolidate empty_zero_page" (Mike Rapoport) Some cleanups for our handling of ZERO_PAGE() and zero_pfn - "mm/kmemleak: Improve scan_should_stop() implementation" (Zhongqiu Han) A robustness improvement and some cleanups in the kmemleak code - "Improve khugepaged scan logic" (Vernon Yang) Improve khugepaged scan logic and reduce CPU consumption by prioritizing scanning tasks that access memory frequently - "Make KHO Stateless" (Jason Miu) Simplify Kexec Handover by transitioning KHO from an xarray-based metadata tracking system with serialization to a radix tree data structure that can be passed directly to the next kernel - "mm: vmscan: add PID and cgroup ID to vmscan tracepoints" (Thomas Ballasi and Steven Rostedt) Enhance vmscan's tracepointing - "mm: arch/shstk: Common shadow stack mapping helper and VM_NOHUGEPAGE" (Catalin Marinas) Cleanup for the shadow stack code: remove per-arch code in favour of a generic implementation - "Fix KASAN support for KHO restored vmalloc regions" (Pasha Tatashin) Fix a WARN() which can be emitted the KHO restores a vmalloc area - "mm: Remove stray references to pagevec" (Tal Zussman) Several cleanups, mainly udpating references to "struct pagevec", which became folio_batch three years ago - "mm: Eliminate fake head pages from vmemmap optimization" (Kiryl Shutsemau) Simplify the HugeTLB vmemmap optimization (HVO) by changing how tail pages encode their relationship to the head page - "mm/damon/core: improve DAMOS quota efficiency for core layer filters" (SeongJae Park) Improve two problematic behaviors of DAMOS that makes it less efficient when core layer filters are used - "mm/damon: strictly respect min_nr_regions" (SeongJae Park) Improve DAMON usability by extending the treatment of the min_nr_regions user-settable parameter - "mm/page_alloc: pcp locking cleanup" (Vlastimil Babka) The proper fix for a previously hotfixed SMP=n issue. Code simplifications and cleanups ensued - "mm: cleanups around unmapping / zapping" (David Hildenbrand) A bunch of cleanups around unmapping and zapping. Mostly simplifications, code movements, documentation and renaming of zapping functions - "support batched checking of the young flag for MGLRU" (Baolin Wang) Batched checking of the young flag for MGLRU. It's part cleanups; one benchmark shows large performance benefits for arm64 - "memcg: obj stock and slab stat caching cleanups" (Johannes Weiner) memcg cleanup and robustness improvements - "Allow order zero pages in page reporting" (Yuvraj Sakshith) Enhance free page reporting - it is presently and undesirably order-0 pages when reporting free memory. - "mm: vma flag tweaks" (Lorenzo Stoakes) Cleanup work following from the recent conversion of the VMA flags to a bitmap - "mm/damon: add optional debugging-purpose sanity checks" (SeongJae Park) Add some more developer-facing debug checks into DAMON core - "mm/damon: test and document power-of-2 min_region_sz requirement" (SeongJae Park) An additional DAMON kunit test and makes some adjustments to the addr_unit parameter handling - "mm/damon/core: make passed_sample_intervals comparisons overflow-safe" (SeongJae Park) Fix a hard-to-hit time overflow issue in DAMON core - "mm/damon: improve/fixup/update ratio calculation, test and documentation" (SeongJae Park) A batch of misc/minor improvements and fixups for DAMON - "mm: move vma_(kernel|mmu)_pagesize() out of hugetlb.c" (David Hildenbrand) Fix a possible issue with dax-device when CONFIG_HUGETLB=n. Some code movement was required. - "zram: recompression cleanups and tweaks" (Sergey Senozhatsky) A somewhat random mix of fixups, recompression cleanups and improvements in the zram code - "mm/damon: support multiple goal-based quota tuning algorithms" (SeongJae Park) Extend DAMOS quotas goal auto-tuning to support multiple tuning algorithms that users can select - "mm: thp: reduce unnecessary start_stop_khugepaged()" (Breno Leitao) Fix the khugpaged sysfs handling so we no longer spam the logs with reams of junk when starting/stopping khugepaged - "mm: improve map count checks" (Lorenzo Stoakes) Provide some cleanups and slight fixes in the mremap, mmap and vma code - "mm/damon: support addr_unit on default monitoring targets for modules" (SeongJae Park) Extend the use of DAMON core's addr_unit tunable - "mm: khugepaged cleanups and mTHP prerequisites" (Nico Pache) Cleanups to khugepaged and is a base for Nico's planned khugepaged mTHP support - "mm: memory hot(un)plug and SPARSEMEM cleanups" (David Hildenbrand) Code movement and cleanups in the memhotplug and sparsemem code - "mm: remove CONFIG_ARCH_ENABLE_MEMORY_HOTREMOVE and cleanup CONFIG_MIGRATION" (David Hildenbrand) Rationalize some memhotplug Kconfig support - "change young flag check functions to return bool" (Baolin Wang) Cleanups to change all young flag check functions to return bool - "mm/damon/sysfs: fix memory leak and NULL dereference issues" (Josh Law and SeongJae Park) Fix a few potential DAMON bugs - "mm/vma: convert vm_flags_t to vma_flags_t in vma code" (Lorenzo Stoakes) Convert a lot of the existing use of the legacy vm_flags_t data type to the new vma_flags_t type which replaces it. Mainly in the vma code. - "mm: expand mmap_prepare functionality and usage" (Lorenzo Stoakes) Expand the mmap_prepare functionality, which is intended to replace the deprecated f_op->mmap hook which has been the source of bugs and security issues for some time. Cleanups, documentation, extension of mmap_prepare into filesystem drivers - "mm/huge_memory: refactor zap_huge_pmd()" (Lorenzo Stoakes) Simplify and clean up zap_huge_pmd(). Additional cleanups around vm_normal_folio_pmd() and the softleaf functionality are performed. * tag 'mm-stable-2026-04-13-21-45' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm: (369 commits) mm: fix deferred split queue races during migration mm/khugepaged: fix issue with tracking lock mm/huge_memory: add and use has_deposited_pgtable() mm/huge_memory: add and use normal_or_softleaf_folio_pmd() mm: add softleaf_is_valid_pmd_entry(), pmd_to_softleaf_folio() mm/huge_memory: separate out the folio part of zap_huge_pmd() mm/huge_memory: use mm instead of tlb->mm mm/huge_memory: remove unnecessary sanity checks mm/huge_memory: deduplicate zap deposited table call mm/huge_memory: remove unnecessary VM_BUG_ON_PAGE() mm/huge_memory: add a common exit path to zap_huge_pmd() mm/huge_memory: handle buggy PMD entry in zap_huge_pmd() mm/huge_memory: have zap_huge_pmd return a boolean, add kdoc mm/huge: avoid big else branch in zap_huge_pmd() mm/huge_memory: simplify vma_is_specal_huge() mm: on remap assert that input range within the proposed VMA mm: add mmap_action_map_kernel_pages[_full]() uio: replace deprecated mmap hook with mmap_prepare in uio_info drivers: hv: vmbus: replace deprecated mmap hook with mmap_prepare mm: allow handling of stacked mmap_prepare hooks in more drivers ... |
||
|
Linus Torvalds
|
5bdb4078e1 |
Merge tag 'sched_ext-for-7.1' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/sched_ext
Pull sched_ext updates from Tejun Heo: - cgroup sub-scheduler groundwork Multiple BPF schedulers can be attached to cgroups and the dispatch path is made hierarchical. This involves substantial restructuring of the core dispatch, bypass, watchdog, and dump paths to be per-scheduler, along with new infrastructure for scheduler ownership enforcement, lifecycle management, and cgroup subtree iteration The enqueue path is not yet updated and will follow in a later cycle - scx_bpf_dsq_reenq() generalized to support any DSQ including remote local DSQs and user DSQs Built on top of this, SCX_ENQ_IMMED guarantees that tasks dispatched to local DSQs either run immediately or get reenqueued back through ops.enqueue(), giving schedulers tighter control over queueing latency Also useful for opportunistic CPU sharing across sub-schedulers - ops.dequeue() was only invoked when the core knew a task was in BPF data structures, missing scheduling property change events and skipping callbacks for non-local DSQ dispatches from ops.select_cpu() Fixed to guarantee exactly one ops.dequeue() call when a task leaves BPF scheduler custody - Kfunc access validation moved from runtime to BPF verifier time, removing runtime mask enforcement - Idle SMT sibling prioritization in the idle CPU selection path - Documentation, selftest, and tooling updates. Misc bug fixes and cleanups * tag 'sched_ext-for-7.1' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/sched_ext: (134 commits) tools/sched_ext: Add explicit cast from void* in RESIZE_ARRAY() sched_ext: Make string params of __ENUM_set() const tools/sched_ext: Kick home CPU for stranded tasks in scx_qmap sched_ext: Drop spurious warning on kick during scheduler disable sched_ext: Warn on task-based SCX op recursion sched_ext: Rename scx_kf_allowed_on_arg_tasks() to scx_kf_arg_task_ok() sched_ext: Remove runtime kfunc mask enforcement sched_ext: Add verifier-time kfunc context filter sched_ext: Drop redundant rq-locked check from scx_bpf_task_cgroup() sched_ext: Decouple kfunc unlocked-context check from kf_mask sched_ext: Fix ops.cgroup_move() invocation kf_mask and rq tracking sched_ext: Track @p's rq lock across set_cpus_allowed_scx -> ops.set_cpumask sched_ext: Add select_cpu kfuncs to scx_kfunc_ids_unlocked sched_ext: Drop TRACING access to select_cpu kfuncs selftests/sched_ext: Fix wrong DSQ ID in peek_dsq error message sched_ext: Documentation: improve accuracy of task lifecycle pseudo-code selftests/sched_ext: Improve runner error reporting for invalid arguments sched_ext: Documentation: Fix scx_bpf_move_to_local kfunc name sched_ext: Documentation: Add ops.dequeue() to task lifecycle tools/sched_ext: Fix off-by-one in scx_sdt payload zeroing ... |
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|
Linus Torvalds
|
f21f7b5162 |
Merge tag 'timers-vdso-2026-04-12' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull vdso updates from Thomas Gleixner: - Make the handling of compat functions consistent and more robust - Rework the underlying data store so that it is dynamically allocated, which allows the conversion of the last holdout SPARC64 to the generic VDSO implementation - Rework the SPARC64 VDSO to utilize the generic implementation - Mop up the left overs of the non-generic VDSO support in the core code - Expand the VDSO selftest and make them more robust - Allow time namespaces to be enabled independently of the generic VDSO support, which was not possible before due to SPARC64 not using it - Various cleanups and improvements in the related code * tag 'timers-vdso-2026-04-12' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (51 commits) timens: Use task_lock guard in timens_get*() timens: Use mutex guard in proc_timens_set_offset() timens: Simplify some calls to put_time_ns() timens: Add a __free() wrapper for put_time_ns() timens: Remove dependency on the vDSO vdso/timens: Move functions to new file selftests: vDSO: vdso_test_correctness: Add a test for time() selftests: vDSO: vdso_test_correctness: Use facilities from parse_vdso.c selftests: vDSO: vdso_test_correctness: Handle different tv_usec types selftests: vDSO: vdso_test_correctness: Drop SYS_getcpu fallbacks selftests: vDSO: vdso_test_gettimeofday: Remove nolibc checks Revert "selftests: vDSO: parse_vdso: Use UAPI headers instead of libc headers" random: vDSO: Remove ifdeffery random: vDSO: Trim vDSO includes vdso/datapage: Trim down unnecessary includes vdso/datapage: Remove inclusion of gettimeofday.h vdso/helpers: Explicitly include vdso/processor.h vdso/gettimeofday: Add explicit includes random: vDSO: Add explicit includes MIPS: vdso: Explicitly include asm/vdso/vdso.h ... |
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Linus Torvalds
|
5d0d362330 |
Merge tag 'kbuild-7.1-1' of git://git.kernel.org/pub/scm/linux/kernel/git/kbuild/linux
Pull Kbuild/Kconfig updates from Nicolas Schier:
"Kbuild:
- reject unexpected values for LLVM=
- uapi: remove usage of toolchain headers
- switch from '-fms-extensions' to '-fms-anonymous-structs' when
available (currently: clang >= 23.0.0)
- reduce the number of compiler-generated suffixes for clang thin-lto
build
- reduce output spam ("GEN Makefile") when building out of tree
- improve portability for testing headers
- also test UAPI headers against C++ compilers
- drop build ID architecture allow-list in vdso_install
- only run checksyscalls when necessary
- update the debug information notes in reproducible-builds.rst
- expand inlining hints with -fdiagnostics-show-inlining-chain
Kconfig:
- forbid multiple entries with the same symbol in a choice
- error out on duplicated kconfig inclusion"
* tag 'kbuild-7.1-1' of git://git.kernel.org/pub/scm/linux/kernel/git/kbuild/linux: (35 commits)
kbuild: expand inlining hints with -fdiagnostics-show-inlining-chain
kconfig: forbid multiple entries with the same symbol in a choice
Documentation: kbuild: Update the debug information notes in reproducible-builds.rst
checksyscalls: move instance functionality into generic code
checksyscalls: only run when necessary
checksyscalls: fail on all intermediate errors
checksyscalls: move path to reference table to a variable
kbuild: vdso_install: drop build ID architecture allow-list
kbuild: vdso_install: gracefully handle images without build ID
kbuild: vdso_install: hide readelf warnings
kbuild: vdso_install: split out the readelf invocation
kbuild: uapi: also test UAPI headers against C++ compilers
kbuild: uapi: provide a C++ compatible dummy definition of NULL
kbuild: uapi: handle UML in architecture-specific exclusion lists
kbuild: uapi: move all include path flags together
kbuild: uapi: move some compiler arguments out of the command definition
check-uapi: use dummy libc includes
check-uapi: honor ${CROSS_COMPILE} setting
check-uapi: link into shared objects
kbuild: reduce output spam when building out of tree
...
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|
Linus Torvalds
|
26ff969926 |
Merge tag 'rust-7.1' of git://git.kernel.org/pub/scm/linux/kernel/git/ojeda/linux
Pull Rust updates from Miguel Ojeda:
"Toolchain and infrastructure:
- Bump the minimum Rust version to 1.85.0 (and 'bindgen' to 0.71.1).
As proposed in LPC 2025 and the Maintainers Summit [1], we are
going to follow Debian Stable's Rust versions as our minimum
versions.
Debian Trixie was released on 2025-08-09 with a Rust 1.85.0 and
'bindgen' 0.71.1 toolchain, which is a fair amount of time for e.g.
kernel developers to upgrade.
Other major distributions support a Rust version that is high
enough as well, including:
+ Arch Linux.
+ Fedora Linux.
+ Gentoo Linux.
+ Nix.
+ openSUSE Slowroll and openSUSE Tumbleweed.
+ Ubuntu 25.10 and 26.04 LTS. In addition, 24.04 LTS using
their versioned packages.
The merged patch series comes with the associated cleanups and
simplifications treewide that can be performed thanks to both
bumps, as well as documentation updates.
In addition, start using 'bindgen''s '--with-attribute-custom-enum'
feature to set the 'cfi_encoding' attribute for the 'lru_status'
enum used in Binder.
Link: https://lwn.net/Articles/1050174/ [1]
- Add experimental Kconfig option ('CONFIG_RUST_INLINE_HELPERS') that
inlines C helpers into Rust.
Essentially, it performs a step similar to LTO, but just for the
helpers, i.e. very local and fast.
It relies on 'llvm-link' and its '--internalize' flag, and requires
a compatible LLVM between Clang and 'rustc' (i.e. same major
version, 'CONFIG_RUSTC_CLANG_LLVM_COMPATIBLE'). It is only enabled
for two architectures for now.
The result is a measurable speedup in different workloads that
different users have tested. For instance, for the null block
driver, it amounts to a 2%.
- Support global per-version flags.
While we already have per-version flags in many places, we didn't
have a place to set global ones that depend on the compiler
version, i.e. in 'rust_common_flags', which sometimes is needed to
e.g. tweak the lints set per version.
Use that to allow the 'clippy::precedence' lint for Rust < 1.86.0,
since it had a change in behavior.
- Support overriding the crate name and apply it to Rust Binder,
which wanted the module to be called 'rust_binder'.
- Add the remaining '__rust_helper' annotations (started in the
previous cycle).
'kernel' crate:
- Introduce the 'const_assert!' macro: a more powerful version of
'static_assert!' that can refer to generics inside functions or
implementation bodies, e.g.:
fn f<const N: usize>() {
const_assert!(N > 1);
}
fn g<T>() {
const_assert!(size_of::<T>() > 0, "T cannot be ZST");
}
In addition, reorganize our set of build-time assertion macros
('{build,const,static_assert}!') to live in the 'build_assert'
module.
Finally, improve the docs as well to clarify how these are
different from one another and how to pick the right one to use,
and their equivalence (if any) to the existing C ones for extra
clarity.
- 'sizes' module: add 'SizeConstants' trait.
This gives us typed 'SZ_*' constants (avoiding casts) for use in
device address spaces where the address width depends on the
hardware (e.g. 32-bit MMIO windows, 64-bit GPU framebuffers, etc.),
e.g.:
let gpu_heap = 14 * u64::SZ_1M;
let mmio_window = u32::SZ_16M;
- 'clk' module: implement 'Send' and 'Sync' for 'Clk' and thus
simplify the users in Tyr and PWM.
- 'ptr' module: add 'const_align_up'.
- 'str' module: improve the documentation of the 'c_str!' macro to
explain that one should only use it for non-literal cases (for the
other case we instead use C string literals, e.g. 'c"abc"').
- Disallow the use of 'CStr::{as_ptr,from_ptr}' and clean one such
use in the 'task' module.
- 'sync' module: finish the move of 'ARef' and 'AlwaysRefCounted'
outside of the 'types' module, i.e. update the last remaining
instances and finally remove the re-exports.
- 'error' module: clarify that 'from_err_ptr' can return 'Ok(NULL)',
including runtime-tested examples.
The intention is to hopefully prevent UB that assumes the result of
the function is not 'NULL' if successful. This originated from a
case of UB I noticed in 'regulator' that created a 'NonNull' on it.
Timekeeping:
- Expand the example section in the 'HrTimer' documentation.
- Mark the 'ClockSource' trait as unsafe to ensure valid values for
'ktime_get()'.
- Add 'Delta::from_nanos()'.
'pin-init' crate:
- Replace the 'Zeroable' impls for 'Option<NonZero*>' with impls of
'ZeroableOption' for 'NonZero*'.
- Improve feature gate handling for unstable features.
- Declutter the documentation of implementations of 'Zeroable' for
tuples.
- Replace uses of 'addr_of[_mut]!' with '&raw [mut]'.
rust-analyzer:
- Add type annotations to 'generate_rust_analyzer.py'.
- Add support for scripts written in Rust ('generate_rust_target.rs',
'rustdoc_test_builder.rs', 'rustdoc_test_gen.rs').
- Refactor 'generate_rust_analyzer.py' to explicitly identify host
and target crates, improve readability, and reduce duplication.
And some other fixes, cleanups and improvements"
* tag 'rust-7.1' of git://git.kernel.org/pub/scm/linux/kernel/git/ojeda/linux: (79 commits)
rust: sizes: add SizeConstants trait for device address space constants
rust: kernel: update `file_with_nul` comment
rust: kbuild: allow `clippy::precedence` for Rust < 1.86.0
rust: kbuild: support global per-version flags
rust: declare cfi_encoding for lru_status
docs: rust: general-information: use real example
docs: rust: general-information: simplify Kconfig example
docs: rust: quick-start: remove GDB/Binutils mention
docs: rust: quick-start: remove Nix "unstable channel" note
docs: rust: quick-start: remove Gentoo "testing" note
docs: rust: quick-start: add Ubuntu 26.04 LTS and remove subsection title
docs: rust: quick-start: update minimum Ubuntu version
docs: rust: quick-start: update Ubuntu versioned packages
docs: rust: quick-start: openSUSE provides `rust-src` package nowadays
rust: kbuild: remove "dummy parameter" workaround for `bindgen` < 0.71.1
rust: kbuild: update `bindgen --rust-target` version and replace comment
rust: rust_is_available: remove warning for `bindgen` < 0.69.5 && libclang >= 19.1
rust: rust_is_available: remove warning for `bindgen` 0.66.[01]
rust: bump `bindgen` minimum supported version to 0.71.1 (Debian Trixie)
rust: block: update `const_refs_to_static` MSRV TODO comment
...
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 Miguel Ojeda
|
93553d9922 |
rust: kbuild: remove "dummy parameter" workaround for bindgen < 0.71.1
Until the version bump of `bindgen`, we needed to pass a dummy parameter to avoid failing the `--version` call. Thus remove it. Reviewed-by: Tamir Duberstein <tamird@kernel.org> Reviewed-by: Gary Guo <gary@garyguo.net> Link: https://patch.msgid.link/20260405235309.418950-22-ojeda@kernel.org Signed-off-by: Miguel Ojeda <ojeda@kernel.org> |
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Miguel Ojeda
|
4ab22c543f |
rust: remove RUSTC_HAS_COERCE_POINTEE and simplify code
With the Rust version bump in place, the `RUSTC_HAS_COERCE_POINTEE` Kconfig (automatic) option is always true. Thus remove the option and simplify the code. In particular, this includes removing our use of the predecessor unstable features we used with Rust < 1.84.0 (`coerce_unsized`, `dispatch_from_dyn` and `unsize`). Reviewed-by: Tamir Duberstein <tamird@kernel.org> Acked-by: Danilo Krummrich <dakr@kernel.org> Reviewed-by: Gary Guo <gary@garyguo.net> Link: https://patch.msgid.link/20260405235309.418950-11-ojeda@kernel.org Signed-off-by: Miguel Ojeda <ojeda@kernel.org> |
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Miguel Ojeda
|
9b398d0565 |
rust: remove RUSTC_HAS_SLICE_AS_FLATTENED and simplify code
With the Rust version bump in place, the `RUSTC_HAS_SLICE_AS_FLATTENED` Kconfig (automatic) option is always true. Thus remove the option and simplify the code. In particular, this includes removing the `slice` module which contained the temporary slice helpers, i.e. the `AsFlattened` extension trait and its `impl`s. Reviewed-by: Tamir Duberstein <tamird@kernel.org> Reviewed-by: Gary Guo <gary@garyguo.net> Link: https://patch.msgid.link/20260405235309.418950-10-ojeda@kernel.org Signed-off-by: Miguel Ojeda <ojeda@kernel.org> |
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Miguel Ojeda
|
b28711ac98 |
rust: simplify RUSTC_VERSION Kconfig conditions
With the Rust version bump in place, several Kconfig conditions based on `RUSTC_VERSION` are always true. Thus simplify them. The minimum supported major LLVM version by our new Rust minimum version is now LLVM 18, instead of LLVM 16. However, there are no possible cleanups for `RUSTC_LLVM_VERSION`. Reviewed-by: Tamir Duberstein <tamird@kernel.org> Reviewed-by: Gary Guo <gary@garyguo.net> Link: https://patch.msgid.link/20260405235309.418950-9-ojeda@kernel.org Signed-off-by: Miguel Ojeda <ojeda@kernel.org> |
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  David Hildenbrand (Arm)andAndrew Morton
|
6ebf98d71f |
mm: introduce CONFIG_NUMA_MIGRATION and simplify CONFIG_MIGRATION
CONFIG_MEMORY_HOTREMOVE, CONFIG_COMPACTION and CONFIG_CMA all select CONFIG_MIGRATION, because they require it to work (users). Only CONFIG_NUMA_BALANCING and CONFIG_BALLOON_MIGRATION depend on CONFIG_MIGRATION. CONFIG_BALLOON_MIGRATION is not an actual user, but an implementation of migration support, so the dependency is correct (CONFIG_BALLOON_MIGRATION does not make any sense without CONFIG_MIGRATION). However, kconfig-language.rst clearly states "In general use select only for non-visible symbols". So far CONFIG_MIGRATION is user-visible ... and the dependencies rather confusing. The whole reason why CONFIG_MIGRATION is user-visible is because of CONFIG_NUMA: some users might want CONFIG_NUMA but not page migration support. Let's clean all that up by introducing a dedicated CONFIG_NUMA_MIGRATION config option for that purpose only. Make CONFIG_NUMA_BALANCING that so far depended on CONFIG_NUMA && CONFIG_MIGRATION to depend on CONFIG_MIGRATION instead. CONFIG_NUMA_MIGRATION will depend on CONFIG_NUMA && CONFIG_MMU. CONFIG_NUMA_MIGRATION is user-visible and will default to "y". We use that default so new configs will automatically enable it, just like it was the case with CONFIG_MIGRATION. The downside is that some configs that used to have CONFIG_MIGRATION=n might get it re-enabled by CONFIG_NUMA_MIGRATION=y, which shouldn't be a problem. CONFIG_MIGRATION is now a non-visible config option. Any code that select CONFIG_MIGRATION (as before) must depend directly or indirectly on CONFIG_MMU. CONFIG_NUMA_MIGRATION is responsible for any NUMA migration code, which is mempolicy migration code, memory-tiering code, and move_pages() code in migrate.c. CONFIG_NUMA_BALANCING uses its functionality. Note that this implies that with CONFIG_NUMA_MIGRATION=n, move_pages() will not be available even though CONFIG_MIGRATION=y, which is an expected change. In migrate.c, we can remove the CONFIG_NUMA check as both CONFIG_NUMA_MIGRATION and CONFIG_NUMA_BALANCING depend on it. With this change, CONFIG_MIGRATION is an internal config, all users of migration selects CONFIG_MIGRATION, and only CONFIG_BALLOON_MIGRATION depends on it. Link: https://lkml.kernel.org/r/20260319-config_migration-v1-2-42270124966f@kernel.org Signed-off-by: David Hildenbrand (Arm) <david@kernel.org> Reviewed-by: Lorenzo Stoakes (Oracle) <ljs@kernel.org> Acked-by: Zi Yan <ziy@nvidia.com> Reviewed-by: Jonathan Cameron <jonathan.cameron@huawei.com> Cc: Albert Ou <aou@eecs.berkeley.edu> Cc: Alexander Gordeev <agordeev@linux.ibm.com> Cc: Alexandre Ghiti <alex@ghiti.fr> Cc: Alistair Popple <apopple@nvidia.com> Cc: "Borislav Petkov (AMD)" <bp@alien8.de> Cc: Byungchul Park <byungchul@sk.com> Cc: Catalin Marinas <catalin.marinas@arm.com> Cc: Christian Borntraeger <borntraeger@linux.ibm.com> Cc: Gregory Price <gourry@gourry.net> Cc: Heiko Carstens <hca@linux.ibm.com> Cc: "H. Peter Anvin" <hpa@zytor.com> Cc: Huacai Chen <chenhuacai@kernel.org> Cc: "Huang, Ying" <ying.huang@linux.alibaba.com> Cc: Ingo Molnar <mingo@redhat.com> Cc: Joshua Hahn <joshua.hahnjy@gmail.com> Cc: Liam Howlett <liam.howlett@oracle.com> Cc: Madhavan Srinivasan <maddy@linux.ibm.com> Cc: Matthew Brost <matthew.brost@intel.com> Cc: Michael Ellerman <mpe@ellerman.id.au> Cc: Michal Hocko <mhocko@suse.com> Cc: Mike Rapoport <rppt@kernel.org> Cc: Nicholas Piggin <npiggin@gmail.com> Cc: Palmer Dabbelt <palmer@dabbelt.com> Cc: Rakie Kim <rakie.kim@sk.com> Cc: Sebastian Andrzej Siewior <bigeasy@linutronix.de> Cc: Steven Rostedt <rostedt@goodmis.org> Cc: Suren Baghdasaryan <surenb@google.com> Cc: Sven Schnelle <svens@linux.ibm.com> Cc: Vasily Gorbik <gor@linux.ibm.com> Cc: WANG Xuerui <kernel@xen0n.name> Cc: Will Deacon <will@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
||
 Gary GuoandMiguel Ojeda
|
e90f97ce20 |
kbuild: rust: add CONFIG_RUSTC_CLANG_LLVM_COMPATIBLE
This config detects if Rust and Clang have matching LLVM major version. All IR or bitcode operations (e.g. LTO) rely on LLVM major version to be matching, otherwise it may generate errors, or worse, miscompile silently due to change of IR semantics. It's usually suggested to use the exact same LLVM version, but this can be difficult to guarantee. Rust's suggestion [1] is also major-version only, so I think this check is sufficient for the kernel. Link: https://doc.rust-lang.org/rustc/linker-plugin-lto.html [1] Reviewed-by: Andreas Hindborg <a.hindborg@kernel.org> Signed-off-by: Gary Guo <gary@garyguo.net> Signed-off-by: Matthew Maurer <mmaurer@google.com> Signed-off-by: Alice Ryhl <aliceryhl@google.com> Reviewed-by: Nathan Chancellor <nathan@kernel.org> Tested-by: Nathan Chancellor <nathan@kernel.org> Reviewed-by: Nicolas Schier <nsc@kernel.org> Tested-by: Nicolas Schier <nsc@kernel.org> Tested-by: Andreas Hindborg <a.hindborg@kernel.org> Link: https://patch.msgid.link/20260203-inline-helpers-v2-1-beb8547a03c9@google.com [ Fixed typo. - Miguel ] Signed-off-by: Miguel Ojeda <ojeda@kernel.org> |
||
  Thomas WeißschuhandThomas Gleixner
|
1b6c89285d |
timens: Remove dependency on the vDSO
Previously, missing time namespace support in the vDSO meant that time namespaces needed to be disabled globally. This was expressed in a hard dependency on the generic vDSO library. This also meant that architectures without any vDSO or only a stub vDSO could not enable time namespaces. Now that all architectures using a real vDSO are using the generic library, that dependency is not necessary anymore. Remove the dependency and let all architectures enable time namespaces. Signed-off-by: Thomas Weißschuh <thomas.weissschuh@linutronix.de> Signed-off-by: Thomas Gleixner <tglx@kernel.org> Link: https://patch.msgid.link/20260326-vdso-timens-decoupling-v2-2-c82693a7775f@linutronix.de |
||
|
Linus Torvalds
|
d2a43e7f89 |
Merge tag 'hardening-v7.0-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux
Pull hardening fixes from Kees Cook: - fix required Clang version for CC_HAS_COUNTED_BY_PTR (Nathan Chancellor) - update Coccinelle script used for kmalloc_obj * tag 'hardening-v7.0-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux: init/Kconfig: Require a release version of clang-22 for CC_HAS_COUNTED_BY_PTR coccinelle: kmalloc_obj: Remove default GFP_KERNEL arg |
||
  Cheng-Yang ChouandTejun Heo
|
e73b1d7210 |
sched_ext: Fix build errors and unused label warning in non-cgroup configs
When building with SCHED_CLASS_EXT=y but CGROUPS=n, clang reports errors
for undeclared cgroup_put() and cgroup_get() calls, and a warning for the
unused err_stop_helper label.
EXT_SUB_SCHED is def_bool y depending only on SCHED_CLASS_EXT, but it
fundamentally requires cgroups (cgroup_path, cgroup_get, cgroup_put,
cgroup_id, etc.). Add the missing CGROUPS dependency to EXT_SUB_SCHED in
init/Kconfig.
Guard cgroup_put() and cgroup_get() in the common paths with:
#if defined(CONFIG_EXT_GROUP_SCHED) || defined(CONFIG_EXT_SUB_SCHED)
Guard the err_stop_helper label with #ifdef CONFIG_EXT_SUB_SCHED since
all gotos targeting it are inside that same ifdef block.
Tested with both CGROUPS enabled and disabled.
Fixes:
|
||
  Nathan ChancellorandKees Cook
|
7a618ca9b9 |
init/Kconfig: Require a release version of clang-22 for CC_HAS_COUNTED_BY_PTR
Commit |
||
 Nathan ChancellorandNicolas Schier
|
0d3fccf68d |
kbuild: Use '-fms-anonymous-structs' if it is available
Clang recently added '-fms-anonymous-structs' [1] to specifically enable the Microsoft tagged anonymous structure / union extension, for which the kernel added '-fms-extensions' in commit |
||
|
Tejun Heo
|
ebeca1f930 |
sched_ext: Introduce cgroup sub-sched support
A system often runs multiple workloads especially in multi-tenant server environments where a system is split into partitions servicing separate more-or-less independent workloads each requiring an application-specific scheduler. To support such and other use cases, sched_ext is in the process of growing multiple scheduler support. When partitioning a system in terms of CPUs for such use cases, an oft-taken approach is hard partitioning the system using cpuset. While it would be possible to tie sched_ext multiple scheduler support to cpuset partitions, such an approach would have fundamental limitations stemming from the lack of dynamism and flexibility. Users often don't care which specific CPUs are assigned to which workload and want to take advantage of optimizations which are enabled by running workloads on a larger machine - e.g. opportunistic over-commit, improving latency critical workload characteristics while maintaining bandwidth fairness, employing control mechanisms based on different criteria than on-CPU time for e.g. flexible memory bandwidth isolation, packing similar parts from different workloads on same L3s to improve cache efficiency, and so on. As this sort of dynamic behaviors are impossible or difficult to implement with hard partitioning, sched_ext is implementing cgroup sub-sched support where schedulers can be attached to the cgroup hierarchy and a parent scheduler is responsible for controlling the CPUs that each child can use at any given moment. This makes CPU distribution dynamically controlled by BPF allowing high flexibility. This patch adds the skeletal sched_ext cgroup sub-sched support: - sched_ext_ops.sub_cgroup_id and .sub_attach/detach() are added. Non-zero sub_cgroup_id indicates that the scheduler is to be attached to the identified cgroup. A sub-sched is attached to the cgroup iff the nearest ancestor scheduler implements .sub_attach() and grants the attachment. Max nesting depth is limited by SCX_SUB_MAX_DEPTH. - When a scheduler exits, all its descendant schedulers are exited together. Also, cgroup.scx_sched added which points to the effective scheduler instance for the cgroup. This is updated on scheduler init/exit and inherited on cgroup online. When a cgroup is offlined, the attached scheduler is automatically exited. - Sub-sched support is gated on CONFIG_EXT_SUB_SCHED which is automatically enabled if both SCX and cgroups are enabled. Sub-sched support is not tied to the CPU controller but rather the cgroup hierarchy itself. This is intentional as the support for cpu.weight and cpu.max based resource control is orthogonal to sub-sched support. Note that CONFIG_CGROUPS around cgroup subtree iteration support for scx_task_iter is replaced with CONFIG_EXT_SUB_SCHED for consistency. - This allows loading sub-scheds and most framework operations such as propagating disable down the hierarchy work. However, sub-scheds are not operational yet and all tasks stay with the root sched. This will serve as the basis for building up full sub-sched support. - DSQs point to the scx_sched they belong to. - scx_qmap is updated to allow attachment of sub-scheds and also serving as sub-scheds. - scx_is_descendant() is added but not yet used in this patch. It is used by later changes in the series and placed here as this is where the function belongs. Signed-off-by: Tejun Heo <tj@kernel.org> Reviewed-by: Andrea Righi <arighi@nvidia.com> |
||
|
Linus Torvalds
|
3ad66a34cc |
Merge tag 'io_uring-7.0-20260305' of git://git.kernel.org/pub/scm/linux/kernel/git/axboe/linux
Pull io_uring fixes from Jens Axboe: - Fix a typo in the mock_file help text - Fix a comment regarding IORING_SETUP_TASKRUN_FLAG in the io_uring.h UAPI header - Use READ_ONCE() for reading refill queue entries - Reject SEND_VECTORIZED for fixed buffer sends, as it isn't implemented. Currently this flag is silently ignored This is in preparation for making these work, but first we need a fixup so that older kernels will correctly reject them - Ensure "0" means default for the rx page size * tag 'io_uring-7.0-20260305' of git://git.kernel.org/pub/scm/linux/kernel/git/axboe/linux: io_uring/zcrx: use READ_ONCE with user shared RQEs io_uring/mock: Fix typo in help text io_uring/net: reject SEND_VECTORIZED when unsupported io_uring: correct comment for IORING_SETUP_TASKRUN_FLAG io_uring/zcrx: don't set rx_page_size when not requested |
||
  J. NeuschäferandJens Axboe
|
9e7dc228bb |
io_uring/mock: Fix typo in help text
Fix the spelling of "subsystem". Signed-off-by: J. Neuschäfer <j.ne@posteo.net> Signed-off-by: Jens Axboe <axboe@kernel.dk> |
||
|
Nathan ChancellorandKees Cook
|
f709859f33 |
init/Kconfig: Adjust fixed clang version for __builtin_counted_by_ref
Commit |
||
|
Kees Cook
|
d39a1d7486 |
compiler_types: Disable __builtin_counted_by_ref for Clang
Unfortunately, there is a corner case of __builtin_counted_by_ref() usage that crashes[1] Clang since support was introduced in Clang 19. Disable it prior to Clang 22. Found while tested kmalloc_obj treewide refactoring (via kmalloc_flex() usage). Link: https://github.com/llvm/llvm-project/issues/182575 [1] Signed-off-by: Kees Cook <kees@kernel.org> |
||
|
Linus Torvalds
|
41f1a08645 |
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
|
36ae1c45b2 |
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
|
4d84667627 |
Merge tag 'perf-core-2026-02-09' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull performance event updates from Ingo Molnar:
"x86 PMU driver updates:
- Add support for the core PMU for Intel Diamond Rapids (DMR) CPUs
(Dapeng Mi)
Compared to previous iterations of the Intel PMU code, there's been
a lot of changes, which center around three main areas:
- Introduce the OFF-MODULE RESPONSE (OMR) facility to replace the
Off-Core Response (OCR) facility
- New PEBS data source encoding layout
- Support the new "RDPMC user disable" feature
- Likewise, a large series adds uncore PMU support for Intel Diamond
Rapids (DMR) CPUs (Zide Chen)
This centers around these four main areas:
- DMR may have two Integrated I/O and Memory Hub (IMH) dies,
separate from the compute tile (CBB) dies. Each CBB and each IMH
die has its own discovery domain.
- Unlike prior CPUs that retrieve the global discovery table
portal exclusively via PCI or MSR, DMR uses PCI for IMH PMON
discovery and MSR for CBB PMON discovery.
- DMR introduces several new PMON types: SCA, HAMVF, D2D_ULA, UBR,
PCIE4, CRS, CPC, ITC, OTC, CMS, and PCIE6.
- IIO free-running counters in DMR are MMIO-based, unlike SPR.
- Also add support for Add missing PMON units for Intel Panther Lake,
and support Nova Lake (NVL), which largely maps to Panther Lake.
(Zide Chen)
- KVM integration: Add support for mediated vPMUs (by Kan Liang and
Sean Christopherson, with fixes and cleanups by Peter Zijlstra,
Sandipan Das and Mingwei Zhang)
- Add Intel cstate driver to support for Wildcat Lake (WCL) CPUs,
which are a low-power variant of Panther Lake (Zide Chen)
- Add core, cstate and MSR PMU support for the Airmont NP Intel CPU
(aka MaxLinear Lightning Mountain), which maps to the existing
Airmont code (Martin Schiller)
Performance enhancements:
- Speed up kexec shutdown by avoiding unnecessary cross CPU calls
(Jan H. Schönherr)
- Fix slow perf_event_task_exit() with LBR callstacks (Namhyung Kim)
User-space stack unwinding support:
- Various cleanups and refactorings in preparation to generalize the
unwinding code for other architectures (Jens Remus)
Uprobes updates:
- Transition from kmap_atomic to kmap_local_page (Keke Ming)
- Fix incorrect lockdep condition in filter_chain() (Breno Leitao)
- Fix XOL allocation failure for 32-bit tasks (Oleg Nesterov)
Misc fixes and cleanups:
- s390: Remove kvm_types.h from Kbuild (Randy Dunlap)
- x86/intel/uncore: Convert comma to semicolon (Chen Ni)
- x86/uncore: Clean up const mismatch (Greg Kroah-Hartman)
- x86/ibs: Fix typo in dc_l2tlb_miss comment (Xiang-Bin Shi)"
* tag 'perf-core-2026-02-09' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (58 commits)
s390: remove kvm_types.h from Kbuild
uprobes: Fix incorrect lockdep condition in filter_chain()
x86/ibs: Fix typo in dc_l2tlb_miss comment
x86/uprobes: Fix XOL allocation failure for 32-bit tasks
perf/x86/intel/uncore: Convert comma to semicolon
perf/x86/intel: Add support for rdpmc user disable feature
perf/x86: Use macros to replace magic numbers in attr_rdpmc
perf/x86/intel: Add core PMU support for Novalake
perf/x86/intel: Add support for PEBS memory auxiliary info field in NVL
perf/x86/intel: Add core PMU support for DMR
perf/x86/intel: Add support for PEBS memory auxiliary info field in DMR
perf/x86/intel: Support the 4 new OMR MSRs introduced in DMR and NVL
perf/core: Fix slow perf_event_task_exit() with LBR callstacks
perf/core: Speed up kexec shutdown by avoiding unnecessary cross CPU calls
uprobes: use kmap_local_page() for temporary page mappings
arm/uprobes: use kmap_local_page() in arch_uprobe_copy_ixol()
mips/uprobes: use kmap_local_page() in arch_uprobe_copy_ixol()
arm64/uprobes: use kmap_local_page() in arch_uprobe_copy_ixol()
riscv/uprobes: use kmap_local_page() in arch_uprobe_copy_ixol()
perf/x86/intel/uncore: Add Nova Lake support
...
|
||
|
Linus Torvalds
|
f17b474e36 |
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()
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