Changes in Build

3d5e48944e824bddc20d7b874e784f7b279636fe - Merge branch 'for-7.3/steam' into for-linus

Wed, 19 Aug 2026 09:16:28 +0200

Merge branch 'for-7.3/steam' into for-linus- initial support for 2026 Steam Controller (Vicki Pfau)- support for sensor events on the 2025 Steam Controller (Vicki Pfau)- assorted fixes, improvements and code refactoring (Vicki Pfau) List of files: /linux/tools/perf/util/Build

0eaed89c18aeedf0898baf2dbf5ff027c6795152 - Merge tag 'timers-v7.3-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/daniel.lezcano/linux into timers/clocksource

Mon, 17 Aug 2026 10:29:52 +0200

Merge tag 'timers-v7.3-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/daniel.lezcano/linux into timers/clocksource - Use designated initializers for sh_mtu2, sh_cmt, and sh_tmu, and drop the unused initializer in the platform_device_id table for sh_mtu2 (Uwe Kleine-König) - Remove redundant dev_err()/dev_err_probe() messages when devm_request_*_irq() fails, as the helper already logs an error message (Pan Chuang) - Fix a boot hang on Allwinner D1 when a forced minimum delta is used with the sun4i timer (Felix Yan) - Fix an IRQ leak in the cpuhp_setup_state() error path by freeing the IRQ on failure in the NXP PIT driver (WenTao Liang) - Fix incorrect unmapping of shared MMIO between the clocksource and clockevent drivers. If one of them fails to initialize, the error path unmaps the shared MMIO region, leaving the other driver with an invalid mapping on clps711x (Guangshuo Li) - Make the samsung_pwm driver compatible with PREEMPT_RT by replacing regular spinlocks with raw_spinlock_t in atomic contexts (Marek Szyprowski) - Use __raw_readl() and __raw_writel() instead of ioread32() and iowrite32() to support SWAP_IO_SPACE in the rtl-otto driver (Rustam Adilov) - Fix a missing clk_disable_unprepare() call in the timer initialization error path of the Armada driver (Yuho Choi)Link: https://lore.kernel.org/lkml/75feea31-683d-45a1-87f4-ab045e0152ae@oss.qualcomm.com List of files: /linux/tools/perf/util/Build

b4d85f863e5a6f1fa01b186001af0f68f4f5239e - Merge branch 'next' into for-linus

Sat, 15 Aug 2026 06:26:07 +0200

Merge branch 'next' into for-linusPrepare input updates for 7.3 merge window. List of files: /linux/tools/perf/util/Build

76904fccf81936c084faebc73ac72c0919a42941 - Merge tag 'v7.2-rc3' into next

Tue, 14 Jul 2026 04:06:00 +0200

Merge tag 'v7.2-rc3' into nextSync up with mainline to pull in stable fixes to avoid merge conflicts. List of files: /linux/tools/perf/util/Build

00599d4841790d05401820a96cf7edb193888b00 - Merge drm/drm-fixes into drm-misc-fixes

Mon, 29 Jun 2026 17:58:00 +0200

Merge drm/drm-fixes into drm-misc-fixesPull in tag v7.2-rc1 so that drm-misc-fixes becomes useful again,and drm-misc-next-fixes can be closed.Signed-off-by: Maarten Lankhorst List of files: /linux/tools/perf/util/Build

05d2a3da153bc08c5fe7937584b5d86505747b9e - Merge tag 'perf-tools-for-v7.2-1-2026-06-22' of git://git.kernel.org/pub/scm/linux/kernel/git/perf/perf-tools

Tue, 23 Jun 2026 20:34:49 +0200

Merge tag 'perf-tools-for-v7.2-1-2026-06-22' of git://git.kernel.org/pub/scm/linux/kernel/git/perf/perf-toolsPull perf tools updates from Arnaldo Carvalho de Melo: - Introduce 'perf inject --aslr' to remap ASLR-randomized addresses in perf.data files, enabling reproducible analysis across runs with different address space layouts - Refactor evsel out of sample processing paths: store evsel in struct perf_sample and remove the redundant evsel parameter from tool APIs, tracepoint handlers, hist entry iterators, and db-export, simplifying the entire tool callback chain - Switch architecture detection from string-based perf_env__arch() comparisons to the numeric ELF e_machine field across the codebase (capstone, print_insn, c2c, lock-contention, sort, sample-raw, machine, header), making cross-analysis more robust - Overhaul ARM CoreSight ETM tests: add deterministic and named_threads workloads, speed up basic and disassembly tests, add process attribution and concurrent threads tests, remove unused workloads and duplicate tests, queue context packets for the frontend decoder - Add ARM SPE IMPDEF event decoding for Arm Neoverse N1, store MIDR in arm_spe_pkt for per-CPU event mapping, handle missing CPU IDs gracefully - Refactor libunwind support: remove the libunwind-local backend, make register reading cross-platform, add RISC-V libunwind support, allow dynamic selection between libdw and libunwind unwinding at runtime - Extensive hardening of perf.data parsing against crafted files: add bounds checks and byte-swap validation for session records, feature sections, header attributes, BPF metadata, auxtrace errors, compressed events, CPU maps, build ID notes, and ELF program headers. Add minimum event size validation and file offset diagnostics - Fix libdw API contract violations across dwarf-aux, libdw, probe-finder, annotate-data, and debuginfo subsystems. Fix callchain parent update in ORDER_CALLER mode, support DWARF line 0 in inline lists, handle multiple address spaces in callchains - Fix numerous 'perf sched' bugs: thread reference leaks, memory leaks, heap overflows with cross-machine recordings, NULL dereferences, replace BUG_ON assertions with graceful error handling, bounds-check CPU indices, fix SIGCHLD vs pause() races in sched stats - Overhaul the build system: move BPF skeleton generation out of Makefile.perf into bpf_skel.mak, decouple pmu-events from the prepare target, make beauty generated C code standalone .o files, compile BPF skeletons with -mcpu=v3, fix continuous rebuilds, various cleanups - Add 'perf test' JUnit XML reporting with -j/--junit option, split monolithic test suites into sub-tests, add summary reporting, refactor parallel poll loop, fix test failures on musl-based systems - Fix 'perf c2c' memory leaks in hist entry and format list handling, use-after-free in error paths, bounds-check CPU and node IDs - Fix 'perf bpf' metadata leaks on duplicate insert and alloc failure, bounds-check array offsets, validate event sizes and func_info fields, add NULL checks - Fix hwmon PMU: off-by-one null termination on sysfs reads, strlcpy buffer overflow in parse_hwmon_filename(), fd 0 check, empty label reads, scnprintf usage - Fix symbols subsystem: bounds-check ELF and sysfs build ID note iteration, validate p_filesz, fix 32-bit ELF bswap error, fix signed overflow in size checks, bounds-check .gnu_debuglink section - Fix tools lib api: null termination in filename__read_int/ull(), uninitialized stack data in filename__write_int(), snprintf truncation in mount_overload() - Replace libbabeltrace with babeltrace2-ctf-writer for CTF conversion in 'perf data' - Add RISC-V SDT argument parsing for static tracepoints - Add 'perf trace --show-cpu' option to display CPU id - Add 'perf bench sched pipe --write-size' option - Add a perf-specific .clang-format that overrides some kernel style behaviors - Update Intel vendor events for Alder Lake, Arrow Lake, Clearwater Forest, Emerald Rapids, Granite Rapids, Grand Ridge, Lunar Lake, Meteor Lake, Panther Lake, Sapphire Rapids, Sierra Forest - Add IOMMU metrics for AMD and Intel - Fix AMD event: switch l2_itlb_misses to bp_l1_tlb_miss_l2_tlb_miss.all - Add AMD IBS improvements: decode Streaming-store and Remote-Socket flags, suppress bogus fields on Zen4+, skip privilege test on Zen6+ - Fix 'perf lock contention' SIGCHLD vs pause() race, allow 'mmap_lock' in -L filter, enable end-timestamp for cgroup aggregation, fix non-atomic data updates - Fix 'perf stat' false NMI watchdog warning in aggregation modes, bounds-check CPU index in topology callbacks, add aggr_nr metric parser support for uncore scaling - Fix 'perf timechart' memory leaks, CPU bounds checking, use-after-free on corrupted callchains - Fix 'perf inject' itrace branch stack synthesis, fix synthesized sample size with branch stacks - Fix DSO heap overflow on decompressed paths, uninitialized pathname on fallback, set proper error codes - Fix various snprintf/scnprintf usages to prevent buffer overflows and truncation across the codebase - Fix off-by-one stack buffer overflow in kallsyms__parse() - Fix 'perf kwork' memory management, address sanitizer issues, bounds check work->cpu - Fix 'perf tpebs' concurrent stop races and PID reuse hazards - Add O_CLOEXEC to open() calls and use mkostemp() for temporary files to prevent file descriptor leaks to child processes - Fix s390 Python extension TEXTREL by compiling as PIC - Fix build with ASAN for jitdump - Fix build failure due to btf_vlen() return type change* tag 'perf-tools-for-v7.2-1-2026-06-22' of git://git.kernel.org/pub/scm/linux/kernel/git/perf/perf-tools: (343 commits) perf bpf: Fix up build failure due to change of btf_vlen() return type perf dso: Set standard errno on decompression failure perf bpf: Validate array presence before casting BPF prog info pointers perf c2c: Fix hist entry and format list leaks in c2c_he_free() perf c2c: Free format list entries when c2c_hists__init() fails perf cs-etm: Bounds-check CPU in cs_etm__get_queue() perf cs-etm: Require full global header in auxtrace_info size check perf cs-etm: Validate num_cpu before metadata allocation perf machine: Use snprintf() for guestmount path construction perf machine: Propagate machine__init() error to callers perf trace: Guard __probe_ip suppression with evsel__is_probe() perf evsel: Add lazy-initialized probe type detection helpers perf evsel: Add no-libtraceevent stubs for evsel__field() and evsel__common_field() perf cs-etm: Reject CPU IDs that would overflow signed comparison perf c2c: Free format list entries when releasing c2c hist entries perf bpf: Bounds-check array offsets in bpil_offs_to_addr() perf bpf: Reject oversized BPF metadata events that truncate header.size perf bpf: Validate func_info_rec_size and sub_id in synthesize_bpf_prog_name() perf sched: Replace (void*)1 sentinel with proper runtime allocation perf hwmon: Fix fd check to accept fd 0 in hwmon_pmu__describe_items() ... List of files: /linux/tools/perf/util/Build

7a0e692a0381254b2f77c54dec100cd3325a6fdf - Merge branch 'next' into for-linus

Tue, 23 Jun 2026 08:10:08 +0200

Merge branch 'next' into for-linusPrepare input updates for 7.2 merge window. List of files: /linux/tools/perf/util/Build

aa776949fb77462ee712eee28bc54a9ce95c5b40 - Merge branch 'for-7.2/wiimote' into for-linus

Tue, 16 Jun 2026 21:47:16 +0200

Merge branch 'for-7.2/wiimote' into for-linus List of files: /linux/tools/perf/util/Build

febea9ec382f5616954c1e3578e70308f4762e59 - perf inject/aslr: Add ASLR tool infrastructure and MMAP tracking

Thu, 11 Jun 2026 18:41:19 +0200

perf inject/aslr: Add ASLR tool infrastructure and MMAP trackingIf perf.data files are taken from one machine to another they mayleak virtual addresses and so weaken ASLR on the machine they arecoming from. Add an aslr option for perf inject that remaps allvirtual addresses, or drops data/events, so that the virtual addressinformation isn't leaked.This patch introduces the core ASLR remapping tool infrastructure andimplements remapping/tracking for metadata events (MMAP, MMAP2, COMM,FORK, EXIT, KSYMBOL, TEXT_POKE). Sample events are delegated withoutremapping for now.Assisted-by: Antigravity:gemini-3.1-proSigned-off-by: Ian Rogers Co-developed-by: Gabriel Marin Signed-off-by: Gabriel Marin Tested-by: James Clark Cc: Adrian Hunter Cc: Ingo Molnar Cc: Jiri Olsa Cc: Namhyung Kim Cc: Peter Zijlstra Signed-off-by: Arnaldo Carvalho de Melo List of files: /linux/tools/perf/util/Build

536e81f07450562caba8e62022763a78fd00a0a7 - perf data ctf: replace libbabeltrace with babeltrace2-ctf-writer

Thu, 04 Jun 2026 19:17:05 +0200

perf data ctf: replace libbabeltrace with babeltrace2-ctf-writerThe 1.x branch of Babeltrace has been superseded by 2.x in 2020 and hasbeen unmaintained since 2022, efforts have started to remove it frompopular distributions.Babeltrace 2.x offers a very similar 'ctf-writer' library that can be usedwith minimal changes for the '--to-ctf' feature and has been packagedsince Debian 11 and Fedora 32.This patch replaces the 'libbabeltrace' build feature with'babeltrace2-ctf-writer' using pkgconfig detection, adjusts the naming ofthe public headers and applies minor API cleanups.There is no changes to the output ctf traces, the ctf-writer API stillimplements version 1.8 of the CTF specification that can be read byeither Babeltrace 1 / 2 or any CTF compliant reader.Also remove some ifdefs in the cli option parsing to allow printing thehelpful error message with '--to-ctf' when built without babeltrace2.Reviewed-by: Ian Rogers Signed-off-by: Michael Jeanson Cc: Adrian Hunter Cc: Alexander Shishkin Cc: Derek Foreman Cc: Ingo Molnar Cc: James Clark Cc: Jiri Olsa Cc: Mark Rutland Cc: Mathieu Desnoyers Cc: Namhyung Kim Cc: Peter Zijlstra Signed-off-by: Arnaldo Carvalho de Melo List of files: /linux/tools/perf/util/Build

fff88709f9a9153af85b5224b4594caa5387ca60 - Merge tag 'v7.1-rc6' into next

Mon, 01 Jun 2026 04:43:25 +0200

Merge tag 'v7.1-rc6' into nextSync up with mainline to pull in a fix to IMS PCU driver and otherenhancements. List of files: /linux/tools/perf/util/Build

639609b83f69fe4cd08e01423ae8e12d84484cfa - Merge branch 'arena_direct_access' of git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next into for-7.2

Mon, 25 May 2026 21:34:24 +0200

Merge branch 'arena_direct_access' of git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next into for-7.2 List of files: /linux/tools/perf/util/Build

5c8cbca290acdd49a694b36c0af76ba0c00bbf12 - Merge branch '20260507-ubwc-rework-v4-4-c19593d20c1d@oss.qualcomm.com' of https://git.kernel.org/pub/scm/linux/kernel/git/qcom/linux into HEAD

Thu, 21 May 2026 22:36:50 +0200

Merge branch '20260507-ubwc-rework-v4-4-c19593d20c1d@oss.qualcomm.com' of https://git.kernel.org/pub/scm/linux/kernel/git/qcom/linux into HEADMerge the branch with the soc/qcom changes, required for the next UBWCpatches.Signed-off-by: Dmitry Baryshkov List of files: /linux/tools/perf/util/Build

713eeb2279402758bbfba301be6fae62c729b34e - perf build: Move BPF skeleton generation out of Makefile.perf

Mon, 18 May 2026 17:46:29 +0200

perf build: Move BPF skeleton generation out of Makefile.perfCurrently, the top-level Makefile.perf defines a massive global bpf-skelumbrella target that pre-compiles all 12+ BPF skeletons (%.skel.h) upfrontbefore launching sub-makes. This forces unrelated sub-makes to serializebehind bpftool and clang BPF target evaluations, causing parallel buildbottlenecks.Furthermore, bench_uprobe.bpf.c lived inside util/bpf_skel/, breakingconceptual directory encapsulation since it is consumed purely bybench/uprobe.c.Refactor the BPF skeletons to better achieve directory isolation:1. Move tools/perf/util/bpf_skel/bench_uprobe.bpf.c directly into tools/perf/bench/bpf_skel/.2. Extract the skeleton generation infrastructure out of Makefile.perf into a shared inclusion file tools/perf/bpf_skel.mak.3. Include bpf_skel.mak locally inside tools/perf/util/Build and tools/perf/bench/Build and bind precise local prerequisites.4. Safely synchronize the shared bpftool bootstrap and vmlinux.h targets via the conditional prepare: umbrella to avoid parallel sub-make races, while evaluating the actual skeletons completely locally on demand. A later patch will move these targets into bpf_skel.mak.5. Export CLANG from the global Makefile to ensure accurate tool propagation.6. Clean up Makefile.perf by stripping the global bpf-skel umbrella target and its SKELETONS list.While removing code from Makefile.perf generally helps buildperformance, the impact here is minimal. The main motivation for thechange is to better encapsulate things in the build and simplifyMakefile.perf that has around 50 lines removed.Reviewed-by: Namhyung Kim Assisted-by: Gemini:gemini-3.1-pro-previewSigned-off-by: Ian Rogers Tested-by: James Clark Cc: Adrian Hunter Cc: Albert Ou Cc: Alexandre Chartre Cc: Alexandre Ghiti Cc: Andrii Nakryiko Cc: Ankur Arora Cc: Collin Funk Cc: Costa Shulyupin Cc: Daniel Borkmann Cc: Dapeng Mi Cc: David Sterba Cc: Dmitrii Dolgov <9erthalion6@gmail.com>Cc: Eduard Zingerman Cc: Howard Chu Cc: Ingo Molnar Cc: Jiri Olsa Cc: Kumar Kartikeya Dwivedi Cc: Leo Yan Cc: Markus Mayer Cc: Martin KaFai Lau Cc: Nathan Chancellor Cc: Nick Terrell Cc: Palmer Dabbelt Cc: Paul Walmsley Cc: Peter Zijlstra Cc: Quentin Monnet Cc: Ricky Ringler Cc: Song Liu Cc: Swapnil Sapkal Cc: Thomas Falcon Cc: Tomas Glozar Cc: Yonghong Song Signed-off-by: Arnaldo Carvalho de Melo List of files: /linux/tools/perf/util/Build

537609924c43715e39a41762d3e3d3c7c534bb71 - perf trace beauty: Make beauty generated C code standalone .o files

Mon, 18 May 2026 17:46:26 +0200

perf trace beauty: Make beauty generated C code standalone .o filesPreviously, builtin-trace.c directly included 15 embedded C files(e.g. trace/beauty/mmap.c and fsconfig_arrays.c), which in turn dependon dozens of generated beauty script arrays. To satisfy these embeddedinclusions, the global Makefile.perf would define all the generatorvariables/rules and include them in the prepare umbrella target, chokingparallel build startup.Furthermore, tools/perf/util/syscalltbl.c included its own generated mapper,and util/env.c conditionally included arch_errno_names.c inline, splittingconsumers across directories and preventing clean Make encapsulation.Refactor the framework to achieve better encapsulation:1. Move util/syscalltbl.[ch] into trace/beauty/ to co-locate with all generated code consumers.2. Create fsconfig.c and flatten embedded beauty .c files to compile as independent standalone objects via trace/beauty/Build, exporting their formatting functions via beauty.h and env.h. Switch arch_errno_names.o and syscalltbl.o assignments directly to perf-util-y and add an unconditional top-level recursive kbuild hook (perf-util-y += trace/beauty/) to compile them into libperf-util.a, resolving remote linkage for util/env.c, util/bpf-trace-summary.c, and standalone python extensions.3. Bridge private opaque references (struct trace) securely via accessors trace__show_zeros() and trace__host(), avoiding header entanglements.4. Consolidate all generator variables, script paths, and array generation rules entirely out of Makefile.perf and place them directly inside the exact local Build files where their output objects are compiled (trace/beauty/Build and trace/beauty/tracepoints/Build), binding prerequisites locally. Use directly inside generator recipes to guarantee dynamic directory creation before script redirection, and append across all rules to print clean, standardized GEN ... file.c output during compilation.5. Clean up clean target to recursively remove the generated directory instead of relying on dozens of individual variables.This unchokes the "prepare" target parallel barrier, allows make to evaluategeneration scripts purely locally where consumed, and flattens the tracepointformatting architecture.Testing a parallel build (make -j28 all from scratch) shows improvements: Before: real 0m28.689s user 2m38.490s sys 0m30.148s After: real 0m27.642s user 2m32.356s sys 0m26.683sSo reclaiming ~9.6 seconds of raw CPU time and over 1 full second offoverall real-world build latency, by overlapping sub-make startup andavoiding top-level double-parsing overhead.Reviewed-by: Namhyung Kim Assisted-by: Gemini:gemini-3.1-pro-previewSigned-off-by: Ian Rogers Tested-by: James Clark Cc: Adrian Hunter Cc: Albert Ou Cc: Alexandre Chartre Cc: Alexandre Ghiti Cc: Andrii Nakryiko Cc: Ankur Arora Cc: Collin Funk Cc: Costa Shulyupin Cc: Daniel Borkmann Cc: Dapeng Mi Cc: David Sterba Cc: Dmitrii Dolgov <9erthalion6@gmail.com>Cc: Eduard Zingerman Cc: Howard Chu Cc: Ingo Molnar Cc: Jiri Olsa Cc: Kumar Kartikeya Dwivedi Cc: Leo Yan Cc: Markus Mayer Cc: Martin KaFai Lau Cc: Nathan Chancellor Cc: Nick Terrell Cc: Palmer Dabbelt Cc: Paul Walmsley Cc: Peter Zijlstra Cc: Quentin Monnet Cc: Ricky Ringler Cc: Song Liu Cc: Swapnil Sapkal Cc: Thomas Falcon Cc: Tomas Glozar Cc: Yonghong Song Signed-off-by: Arnaldo Carvalho de Melo List of files: /linux/tools/perf/util/Build

09d6818d3bdc1ea6e49a425040528cbdbc97bc0a - Merge branch 'linus' into timers/clocksource

Mon, 18 May 2026 11:01:07 +0200

Merge branch 'linus' into timers/clocksource... to bring it up to date for new changes. List of files: /linux/tools/perf/util/Build

88b4275ff542510fa80c32c863571c71d60f8766 - perf unwind-libunwind: Remove libunwind-local

Thu, 14 May 2026 01:31:50 +0200

perf unwind-libunwind: Remove libunwind-localLocal unwinding only works on the machine libunwind is built for,rather than cross platform, the APIs for remote and local unwindingare similar but types like unw_word_t depend on the includedheader. Place the architecture specific code into the appropriatelibunwind-.c file. Put generic code in unwind-libunwind.c anduse libunwind-arch to choose the correct implementation based on thethread's e_machine. Structuring the code this way avoids including theunwind-libunwind-local.c for each architecture of remoteunwinding. Data is moved into the struct unwind_info to simplify thearchitecture and generic code, trying to keep as much code as possiblegeneric.Signed-off-by: Ian Rogers Cc: Adrian Hunter Cc: Albert Ou Cc: Alexander Shishkin Cc: Alexandre Ghiti Cc: Andrew Jones Cc: Athira Rajeev Cc: Dapeng Mi Cc: Dmitrii Dolgov <9erthalion6@gmail.com>Cc: Florian Fainelli Cc: Howard Chu Cc: Ingo Molnar Cc: James Clark Cc: Jiri Olsa Cc: John Garry Cc: Leo Yan Cc: Li Guan Cc: Namhyung Kim Cc: Palmer Dabbelt Cc: Paul Walmsley Cc: Peter Zijlstra Cc: Shimin Guo Cc: Thomas Richter Cc: Tomas Glozar Cc: Will Deacon Signed-off-by: Arnaldo Carvalho de Melo List of files: /linux/tools/perf/util/Build

fdf08e4b5a33e840b6c2a988cd4392b4443ca51b - perf unwind-libunwind: Make libunwind register reading cross platform

Thu, 14 May 2026 01:31:48 +0200

perf unwind-libunwind: Make libunwind register reading cross platformMove the libunwind register to perf register mapping functions inarch/../util/unwind-libunwind.c into a new libunwind-archdirectory. Rename the functions to__get_perf_regnum_for_unw_regnum_. Add untested ppc32 and s390functions. Add a get_perf_regnum_for_unw_regnum function that takes anELF machine as well as a register number and chooses the appropriatearchitecture implementation.Split the x86 and powerpc 32 and 64-bit implementations apart so thata single libunwind-.h header is included.Move the e_machine into the unwind_info struct to make it easier topass.Signed-off-by: Ian Rogers Cc: Adrian Hunter Cc: Albert Ou Cc: Alexander Shishkin Cc: Alexandre Ghiti Cc: Andrew Jones Cc: Athira Rajeev Cc: Dapeng Mi Cc: Dmitrii Dolgov <9erthalion6@gmail.com>Cc: Florian Fainelli Cc: Howard Chu Cc: Ingo Molnar Cc: James Clark Cc: Jiri Olsa Cc: John Garry Cc: Leo Yan Cc: Li Guan Cc: Namhyung Kim Cc: Palmer Dabbelt Cc: Paul Walmsley Cc: Peter Zijlstra Cc: Shimin Guo Cc: Thomas Richter Cc: Tomas Glozar Cc: Will Deacon [ Map UNW_PPC32_NIP to PERF_REG_POWERPC_NIP like done for 64-bit, pointed out by a local sashiko ]Signed-off-by: Arnaldo Carvalho de Melo List of files: /linux/tools/perf/util/Build

4248ae6e799605b3e62855be6085935d89de50d1 - perf unwind: Refactor get_entries to allow dynamic libdw/libunwind selection

Thu, 14 May 2026 01:31:45 +0200

perf unwind: Refactor get_entries to allow dynamic libdw/libunwind selectionCurrently, both libdw and libunwind define 'unwind__get_entries'. Thiscauses a duplicate symbol build failure when both are compiled intoperf.This commit refactors the DWARF unwind post-processing to beconfigurable at runtime via the .perfconfig file option'unwind.style', or using the argument '--unwind-style' in the commands'perf report', 'perf script' and 'perf inject', in a similar manner tothe addr2line or the disassembler style.The file 'tools/perf/util/unwind.c' adds the top-level dispatchfunction 'unwind__get_entries'. The backend implementations arerenamed to 'libdw__get_entries' and 'libunwind__get_entries'. Both areattempted as fallbacks if not configured, or if the primary backendfails.Fixes: 2e9191573a69ff96 ("perf build: Remove NO_LIBDW_DWARF_UNWIND option")Signed-off-by: Ian Rogers Cc: Adrian Hunter Cc: Albert Ou Cc: Alexander Shishkin Cc: Alexandre Ghiti Cc: Andrew Jones Cc: Athira Rajeev Cc: Dapeng Mi Cc: Dmitrii Dolgov <9erthalion6@gmail.com>Cc: Florian Fainelli Cc: Howard Chu Cc: Ingo Molnar Cc: James Clark Cc: Jiri Olsa Cc: John Garry Cc: Leo Yan Cc: libunwind-devel@nongnu.orgCc: Li Guan Cc: Namhyung Kim Cc: Palmer Dabbelt Cc: Paul Walmsley Cc: Peter Zijlstra Cc: Shimin Guo Cc: Thomas Richter Cc: Tomas Glozar Cc: Will Deacon [ Don't mix declarations and code, move 'entries' variable to the start of scope ][ Use pr_warning_once() instead of pr_err() in stubs for get_entries(), suggested by a local sashiko instance ]Signed-off-by: Arnaldo Carvalho de Melo List of files: /linux/tools/perf/util/Build

658a6021492ad3b1b8a6e9a83963a1fad35a2af8 - Merge drm/drm-next into drm-intel-next

Fri, 15 May 2026 13:01:15 +0200

Merge drm/drm-next into drm-intel-nextSome Display Port Adaptive Sync depends on drm work.Signed-off-by: Rodrigo Vivi List of files: /linux/tools/perf/util/Build