kernel/git/stable/linux.git/tools/lib, branch master

Merge tag 'thermal-7.3-rc1-2' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm

2026-08-26T21:21:30+00:00

Pull more thermal control updates from Rafael Wysocki: "This mostly consists of assorted updates of thermal drivers, including new hardware support (Airoha AN7583, Qualcomm Master BandGap thermal monitor, QCom PMIC5 Gen3 ADC), but it also includes two reverts of recent cosmetic thermal core updates that went against driver core plans to eliminate class_create(): - Fix missing bitfield include headers in Armada and QCom SPM BMG drivers (Daniel Lezcano) - Fix missed file when manually applying a change after a conflict resolution for the QCom SPMI ADC TM5 Gen3 (Daniel Lezcano) - Move thermal_zone_device_enable() to the right place in order to prevent calling it if the thermal zone registration failed (Dan Carpenter) - Improve bitfield manipulations on Armada (Bryan B. Lima) - Remove unneeded 'fast_io' on Sun8i and Armada (Wolfram Sang) - Fix wrong boundary when clamping the low values in the set_trips() callback and fix wrong mask when setting the temperature interval on Airoha (Christian Marangi) - Make use of the regmap API to support Airoha AN7583 (Christian Marangi) - Fix adc_tm5_get_temp() return check value on the QCom SPMI ADC sensor (Rakesh Kota) - Fix unbalanced clock enablement when the resume fails on the iMX driver (Can Peng) - Add Qualcomm Master BandGap thermal monitor support (Satya Priya Kakitapalli) - Add Maili Temperature bindings compatible (Haritha S K) - Add a devm action to clean hardware interrupts, sampling, and control registers on Spacemit K1 (Pei Xiao) - Fix trivial typo in a thermal OF code comment (Marek Vasut) - Remove unnecessary print on Qcom SPMI ADC driver when a call to devm_request_threaded_irq() fails as this one already prints a message (Jishnu Prakash) - Add support for QCom PMIC5 Gen3 ADC by using auxiliary driver and shared interrupt with the IIO driver (Jishnu Prakash) - Make resets optional on MT8196 and add the corresponding property in the DT bindings (AngeloGioacchino Del Regno) - Fix clock staying enabled on failing resume operation on Qoriq (Can Peng) - Fix wrong closing brace position in thermal library header (Andreas Haufler) - Fix low and high trip point validation by moving the check after the clamp on the spacemit driver (surendra) - Remove redundant error messages on IRQ request failure (Pan Chuang) - Add IIO_CONSUMER namespace import to the qcom-spmi-mbg-tm thermal driver to avoid modpost warnings that would appear after merging the iio tree against the thermal updates (Nathan Chancellor) - Revert two recent cosmetic updates of the thermal core conflicting with driver core plans to eliminate class_create() (Rafael Wysocki)" * tag 'thermal-7.3-rc1-2' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm: (32 commits) thermal/drivers/qcom-spmi-mbg-tm: Add module namespace import for IIO_CONSUMER Revert "thermal/core: Allocate the thermal class dynamically" Revert "thermal/core: Use the thermal class pointer as init guard" thermal/drivers/armada: Fix missing bitfields include thermal/drivers/qcom/spm mbg tm: Fix missing bitfield header thermal/drivers/qcom: Fix missing spmi adc tm5 gen3 file thermal/drivers: Remove redundant error messages on IRQ request failure thermal/drivers/spacemit: Validate clamped trip thresholds tools/lib/thermal: Fix misplaced extern "C" closing brace thermal/drivers/qoriq: Disable clock on resume failure thermal/drivers/mediatek/lvts_thermal: Make reset optional for MT8196 dt-bindings: thermal: mediatek: Make resets optional for MT8196 thermal/drivers/qcom: add support for PMIC5 Gen3 ADC thermal monitoring iio: adc: qcom-spmi-adc5-gen3: Share SDAM0 IRQ with ADC_TM auxiliary driver iio: adc: qcom-spmi-adc5-gen3: Remove an unnecessary print thermal/of: Fix trivial enabled typo thermal/drivers/spacemit/k1: Add shutdown action and reorder registration order dt-bindings: thermal: qcom-tsens: Document the Maili Temperature Sensor thermal/drivers/qcom: Add support for Qualcomm MBG thermal monitoring dt-bindings: thermal: Add Qualcomm MBG thermal monitor support ...

Merge tag 'perf-tools-for-v7.3-2026-08-21' of git://git.kernel.org/pub/scm/linux/kernel/git/perf/perf-tools

2026-08-22T15:47:50+00:00

Pull perf tools updates from Namhyung Kim: "perf c2c: - Add 'function view' in perf c2c report TUI (switched by pressing 'TAB' in the cacheline view) to organize samples around functions rather than cachelines in 3-level hierarchy: Level 1: Read-side function (sorted by estimated Cycles %) Level 2: Contending writer functions (sorted by Store count) Level 3: Shared cacheline addresses Users can navigate the entries and fold/unfold using 'e' key. An example output would look like below: Shared Data Functions Table (19 entries, sorted on Cycles %) Cycles Store % count Function / Contending function / Cacheline ---------------------------------------------------------------------- + 35.67% 876 + [k] cpupri_set + 24.31% 424 + [k] pull_rt_task - 16.53% 555 - [k] dequeue_pushable_task 145 - [k] pull_rt_task 145 0xff2d0082809da080 139 - [k] enqueue_pushable_task 70 0xff2d00a2071f9640 69 0xff2d0082809da000 python module support: - Extend "perf" python module so that it can be fully functional. The goal is to run scripts directly, not by 'perf script' command. This would give better performance as well as more control to build standalone programs with UI. - Add LiveSession helper (perf_live.py) to enable live event collection directly from Python using perf.evlist and perf.parse_events. perf stat: - Add --hide-zero-events option to suppress zero-count events - Reject conflicting --field-separator and --json-output options - Fix duplicate event output with --for-each-cgroup perf sched latency: - Add -H/--histogram and --hist-mode (log|linear) options to show scheduler wait latency histograms - Add --time option to filter analysis by time span in 'perf sched latency' ARM CoreSight: - Synthesize callchains for instruction samples from CoreSight trace using thread stack ('--itrace=g...') - Support call indentation ('perf script -F +callindent') to display call depth hierarchy on branch samples - Decode ETE (Embedded Trace Extension) exception packets Build system: - Add 'make install-build-deps' target to install required packages - Parallelize JSON and metric pre-computation in jevents.py for faster builds Vendor event/metric updates: - Add Intel Nova Lake events and update tables for existing models - Update AMD Zen 5 and Zen 6 core events - Update Arm64 Tegra410 metrics and PowerPC hcalls Internal changes and fixes: - Harden trace-event and synthetic event parsing against corrupted data - Fix unwinding of multi-threaded processes in libdw unwinder - Fix memory leaks in various commands and python bindings - Speed up 'perf test' shell tests" * tag 'perf-tools-for-v7.3-2026-08-21' of git://git.kernel.org/pub/scm/linux/kernel/git/perf/perf-tools: (232 commits) perf vendor events arm64: Fix Tegra410 Olympus event 0x0197 perf vendor events arm64: fix swapped MetricGroup for Tegra410 L1 prefetcher metrics perf evlist: Warn when 'sleep' workload is used without system-wide (-a) option perf c2c: document function view in perf-c2c man page perf c2c: add function view browser UI and cacheline detail perf c2c: build and finalize the function view hierarchy perf c2c: add function view hierarchy entry creation perf c2c: add function view stats merge and memory management perf c2c: add HPP list parsing for function view columns perf c2c: add column rendering for function view perf c2c: add function view model skeleton perf c2c: extract shared data structures into util/c2c.h perf test sample-parsing: Validate PERF_FORMAT_GROUP values without LOST perf dso: Replace assert with runtime check in dso__read_symbol() perf dso: Guard against cache underflow on short reads in dso_cache__memcpy() perf dso: Use stored fd error instead of stale errno in file_read() and file_size() perf dso: Guard close() against invalid fd in dso__decompress_kmodule_path() perf dso: Guard against errno==0 when dso__get_filename() returns NULL perf build: install-build-deps: add RHEL family devel package mapping perf build: Remove leftover feature tests for removed cxx and clang support ...

Merge tag 'docs-7.3' of git://git.kernel.org/pub/scm/linux/kernel/git/docs/linux

2026-08-20T17:31:50+00:00

Pull documentation updates from Jonathan Corbet: "It has been a not-too-busy cycle for docs; here's the highlights: - A (hopefully) consensus change to our LLM-attribution requirements, removing the specific model name from the Assisted-by tag - A couple of new realtime documents - Various docs-build-system fixes - Ongoing work with the Chinese, Portuguese, and Japanese translations ...and lots of typo fixes, grammar tweaks, etc" * tag 'docs-7.3' of git://git.kernel.org/pub/scm/linux/kernel/git/docs/linux: (85 commits) Doc: admin-guide: pm: Remove unnecessary backticks and fix a spell Documentation: Extend the real-time hardware bits with some firmware bits docs: pt_BR: Reorganize process/index.rst to follow english structure docs: conf.py: fix the 'utf-8' typo doc tools: fix 'path' typos Documentation: real-time: Add kernel configuration guide docs: python: abi_regex: convert adjacent index placeholders docs: python: abi_regex: catch the right exception for a bad regex docs: sphinx-build-wrapper: include localversion in kernel version string Documentation: html: adjust sidebar section titles styling Documentation: html: show sections in the sidebar checkpatch.pl: adapt to new Assisted-by: format MAINTAINERS: update Traditional Chinese documentation maintainers docs: pt_BR: process: Translate CVE documentation docs: pt_BR: translate the management-style.rst to Brazilian Portuguese docs: xforms_lists: support DEFINE_IDTENTRY_IRQ() coding-assistants: simplify attribution docs: translations: pt_BR: translate email-clients.rst docs: pt_BR: process: Translate the security-bugs.rst doc:it_IT: align doc-guide translation ...

Merge tag 'bpf-next-7.3' of git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next

2026-08-20T14:36:20+00:00

Pull bpf updates from Daniel Borkmann: "Major changes: - Redesign the verifier error reporting: failures now carry source and instruction annotations along with the causal event history that led to them, making program rejections far easier to debug and repair (Kumar Kartikeya Dwivedi) - Add arena argument support to kfuncs and struct_ops through the new __arena and __arena__nullable suffixes (Tejun Heo, Puranjay Mohan, Kumar Kartikeya Dwivedi, Ihor Solodrai) - Signed BPF program loader rework to accommodate both BPF and security community needs where the kernel runs the signature verification at BPF_PROG_LOAD time before the LSM admission hook (Daniel Borkmann) - Add a set of ksock kfuncs which let BPF LSM and syscall programs create, connect and send on UDP sockets in order to emit telemetry data (Mahe Tardy) - Unify helper and kfunc call argument verification and classify kfunc arguments purely from BTF into a generated bpf_func_proto which is computed once at add-call time (Amery Hung) Other features and fixes: - Enable EXECMEM_ROX_CACHE for BPF allocations on x86 (Mike Rapoport) - Add bidirectional VLAN support to bpf_fib_lookup() through the new BPF_FIB_LOOKUP_VLAN and BPF_FIB_LOOKUP_VLAN_INPUT flags (Avinash Duduskar) - Infer zext_dst from static register liveness analysis to fix 32-bit zero-extension semantics, and remove the artificial limitations on pointer types eligible for spilling (Eduard Zingerman) - Inline the numeric open-coded iterator kfuncs so that bpf_for() loops no longer pay a kfunc call on every iteration (Puranjay Mohan) - Add an arena-based bitmap data structure to libarena along with serial and parallel selftests (Emil Tsalapatis) - Teach resolve_btfids to discover kfuncs from the kernel's BTF ID sets and to emit kfunc BTF decl tags, reducing the kernel build's dependency on pahole features (Ihor Solodrai) - Add BPF_F_ADJ_ROOM_DECAP_* flags to bpf_skb_adjust_room() so that tunnel decapsulation can update the GSO and encapsulation state of the skb (Nick Hudson) - Fix the ring buffer pending_pos walk and the available-data accounting on 32-bit position wrap (Israel Téllez García) - Add memory usage accounting for arena maps and fix an mmap_lock deadlock on arena lock failure (Jiayuan Chen) - Add tracing_multi link info support to the kernel UAPI and bpftool, and refactor the stack map code to run with preemption disabled (Jiri Olsa) - Support BPF_F_EGRESS in bpf_redirect_peer() to emit the skb in the egress direction of the target's peer device (Jordan Rife) - Add a KF_SPINLOCK_SAFE kfunc flag so that providers, in particular modules, can declare kfuncs safe to call under bpf_spin_lock instead of relying on the verifier's hard-coded allowlist (Kaitao Cheng) - Introduce global percpu data for BPF programs with libbpf probing and bpftool skeleton support, and stop exposing uninitialized kernel heap memory when copying per-CPU map values (Leon Hwang) - Add s390 JIT support for load-acquire and store-release instructions (Maxim Khmelevskii) - Fix a CFI mismatch in the task work callback and an arm64 KASAN false positive after bpf_throw() (Mykyta Yatsenko) - Reject writes through untrusted BTF pointers and bound the rdonly/rdwr_buf_size kfunc arguments (Nicholas Dudar) - Invalidate RCU pointers only after the final spin unlock and account for preempt and IRQ disabled regions as overlapping RCU protection (Ning Ding) - Support mixing bpf2bpf calls and tail calls on RV64, add signed operations and 32-bit atomics to the RV32 JIT, and add timed may_goto support (Pu Lehui, Kuan-Wei Chiu, Feng Jiang) - Fix a use-after-free on mm_struct in bpf_find_vma() for foreign tasks and an mmap_lock leak in the irq_work path (Sanghyun Park) - Populate mmap-able BPF array map memory lazily which makes mmap() O(1) instead of proportional to the map size (Song Liu) - Introduce a jit_required flag and reject programs with inlined helpers when no JIT is available, where the interpreter would otherwise jump into an invalid address (Tiezhu Yang) - Fix the x86 JIT per-CPU address resolution into an extended register where the REX prefix dropped the high destination register bit (Vineet Gupta) - Reject MEM_ALLOC BTF accesses past object bounds, arena frees below the arena base, and mixed arena and ordinary atomic paths (Yiyang Chen) - Fix the trampoline handling of 128-bit arguments and of return values larger than 8 bytes (Yonghong Song) - Ensure that any fault prone load is rewritten with exception table handling, and fix the arena load-acquire and atomic fetch handling in the x86, arm64, riscv and s390 JITs (Daniel Borkmann) - Many more fixes and cleanups across the verifier, arena, trampolines, sockmap, cgroup, ring buffer, x86/arm64/riscv/s390 JITs, libbpf, bpftool, resolve_btfids and selftests" * tag 'bpf-next-7.3' of git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next: (373 commits) selftests/bpf: Add tests for a store on a fault prone qdisc pointer selftests/bpf: Add tests for fault prone loads out of RCU pointers selftests/bpf: Add tests for pointer type merge at a shared load selftests/bpf: Remove duplicate copies of the arena spinlock qnodes selftests/bpf: Retry stat generation in cgroup_iter_memcg selftests/bpf: Test pseudo-function policy diagnostics bpf: Distinguish function references in policy diagnostics bpf: Preserve source attribution without source text selftests/bpf: Test kfunc argument diagnostics bpf: Correct kfunc argument diagnostics bpf: Use canonical stack argument names in diagnostics bpf: Preserve R0 lineage across helper calls selftests/bpf: Exercise negative optlen in cgroup getsockopt hook bpf: Reject negative optlen in cgroup getsockopt hook selftests/bpf: tc_tunnel - validate decap GSO and encapsulation state bpf: Clear decap state on skb_adjust_room shrink path bpf: Allow new DECAP flags and add guard rails bpf: Add BPF_F_ADJ_ROOM_DECAP_* flags for tunnel decapsulation bpf: Refactor masks for ADJ_ROOM flags and encap validation bpf: Name the enum for BPF_FUNC_skb_adjust_room flags ...

libbpf: Fix ring buffer consumer loop on 32-bit position wrap

2026-08-14T22:21:09+00:00

ringbuf_process_ring() walks the records between the consumer and the producer with an ordering comparison: while (cons_pos < prod_pos) { cons_pos and prod_pos mirror the kernel's ring positions and are unsigned long here too, so on 32-bit they wrap at 2^32 bytes of traffic. When producer_pos has wrapped and consumer_pos has not, prod_pos is the smaller of the two, the loop body never runs and no record is consumed. Since consumer_pos only advances inside that loop, it never wraps either and the consumer stops delivering samples for good, with no error returned to the caller: ring_buffer__poll() keeps reporting zero records while the kernel side fills up and starts dropping. Compare the distance instead. The consumer never runs ahead of the producer, so prod_pos - cons_pos is the amount of unconsumed data and stays correct across the wrap. 64-bit hosts are unaffected in practice: the counters would need 16 EiB to wrap. This is the userspace counterpart of the kernel-side walk fixed in "bpf: Fix pending_pos walk on 32-bit ring position wrap"; a 32-bit consumer hits whichever of the two comes first. Signed-off-by: Israel Téllez García Signed-off-by: Andrii Nakryiko Link: https://lore.kernel.org/bpf/20260814124843.22041-5-i.tellez@btesa.com

libbpf: Avoid unnecessary mmap resize for percpu data maps

2026-08-14T20:33:35+00:00

Use array_map_mmap_sz() for PERCPU_ARRAY like ARRAY in bpf_map_mmap_sz(). This lets bpf_map__set_value_size() skip mmap(), memcpy(), and munmap() when the old and new value sizes occupy the same number of pages. Fix some typos btw: * mmapble -> mmapable * satisified -> satisfied * relocatin -> relocation * atach_btf_obj_fd -> attach_btf_obj_fd * len_secnd -> len_second * precendence -> precedence Signed-off-by: Leon Hwang Signed-off-by: Andrii Nakryiko Link: https://lore.kernel.org/bpf/20260814173206.93082-3-leon.hwang@linux.dev

bpftool: Generate skeleton for global percpu data

2026-08-13T17:27:40+00:00

Enhance bpftool to generate skeletons that properly handle global percpu variables. The generated skeleton now includes a dedicated structure for percpu data, allowing users to initialize and access percpu variables more efficiently. For global percpu variables, the skeleton now includes a nested structure, e.g.: struct test_global_percpu_data { struct bpf_object_skeleton *skeleton; struct bpf_object *obj; struct { struct bpf_map *percpu; } maps; // ... struct test_global_percpu_data__percpu { int data; char run; struct { char set; int i; int nums[7]; } struct_data; int nums[7]; } *percpu; // ... }; * The "struct test_global_percpu_data__percpu *percpu" points to initialized data, which is actually "maps.percpu->mmaped". * Before loading the skeleton, updating the "struct test_global_percpu_data__percpu *percpu" modifies the initial value of the corresponding global percpu variables. * After loading the skeleton, "maps.percpu->mmaped" has been marked as read-only in libbpf. If users want to update the global percpu variables, they have to update the "maps.percpu" map instead. * For lightweight skeleton, "lskel->percpu" will be protected by "mprotect(p, sz, PROT_READ)". * For subskeleton, those variables of global percpu data will be skipped. Assisted-by: Codex:gpt-5.5-xhigh Signed-off-by: Leon Hwang Signed-off-by: Andrii Nakryiko Acked-by: Quentin Monnet Link: https://lore.kernel.org/bpf/20260813152324.97937-7-leon.hwang@linux.dev

libbpf: Add support for global percpu data

2026-08-13T17:27:40+00:00

Add support for global percpu data in libbpf by adding a new ".percpu" section, similar to ".data". It enables efficient handling of percpu global variables in bpf programs. When generating loader for lightweight skeleton, update the percpu_array map used for global percpu data using BPF_F_ALL_CPUS, in order to update values across all CPUs using one value slot. Unlike global data, the mmaped data for global percpu data will be marked as read-only after populating the percpu_array map. Thereafter, users can read those initialized percpu data after loading prog. If they want to update the percpu data after loading prog, they have to update the percpu_array map using key=0 instead. Signed-off-by: Leon Hwang Signed-off-by: Andrii Nakryiko Link: https://lore.kernel.org/bpf/20260813152324.97937-6-leon.hwang@linux.dev

libbpf: Probe percpu data feature

2026-08-13T17:27:40+00:00

libbpf needs a reliable way to distinguish kernels that can support global percpu data from those that cannot. Add a dedicated feature probe, so libbpf can make capability decisions early and fail predictably when global percpu data is unavailable. Signed-off-by: Leon Hwang Signed-off-by: Andrii Nakryiko Reviewed-by: Emil Tsalapatis Acked-by: Andrii Nakryiko Link: https://lore.kernel.org/bpf/20260813152324.97937-5-leon.hwang@linux.dev

docs: python: abi_regex: convert adjacent index placeholders

2026-08-11T16:36:28+00:00

While validating recent CXL ABI documentation updates with get_abi.py, every decoderX.Y entry was reported as undocumented. The placeholder conversion mishandles adjacent index placeholders, producing patterns that cannot match the corresponding sysfs paths. As a result, valid ABI entries are reported as undocumented. Handle adjacent placeholders independently so generated patterns match the documented paths. This fixes decoderX.Y entries in the CXL ABI and other ABI documentation that uses the same naming convention. Signed-off-by: Alison Schofield Signed-off-by: Jonathan Corbet Message-ID: