performance events subsystem · Supported

Maintainers

• M Peter Zijlstra <peterz@infradead.org>
• M Ingo Molnar <mingo@redhat.com>
• M Arnaldo Carvalho de Melo <acme@kernel.org>
• M Namhyung Kim <namhyung@kernel.org>
• R Mark Rutland <mark.rutland@arm.com>
• R Alexander Shishkin <alexander.shishkin@linux.intel.com>
• R Jiri Olsa <jolsa@kernel.org>
• R Ian Rogers <irogers@google.com>
• R Adrian Hunter <adrian.hunter@intel.com>
• R James Clark <james.clark@linaro.org>

Paths

• F arch/*/events/*
• F arch/*/events/*/*
• F arch/*/include/asm/perf_event.h
• F arch/*/kernel/*/*/perf_event*.c
• F arch/*/kernel/*/perf_event*.c
• F arch/*/kernel/perf_callchain.c
• F arch/*/kernel/perf_event*.c
• F include/linux/perf_event.h
• F include/uapi/linux/perf_event.h
• F kernel/events/*
• F tools/lib/perf/
• F tools/perf/

Last 30 days

Active reviewers (last 30 days)

• Ian Rogers <irogers@google.com>
  2 attestations (2 Reviewed-by) · last on 2026-07-15

Recent patches

Most-recent 30 patches in this subsystem on llvm (capped at 30), ordered by date desc.

• COOLING7d [PATCH v4 4/4] tools/build: selftests: Remove some duplicate toolchain definitions
  2026-07-15 · James Clark <james.clark@linaro.org>
• COOLING7d REVIEWED: 1 (1M) [PATCH v4 3/4] tools/build: Allow versioning LLVM readelf
  2026-07-15 · James Clark <james.clark@linaro.org>
• COOLING8d [PATCH v3 5/5] tools/build: selftests: Remove some duplicate toolchain definitions
  2026-07-15 · James Clark <james.clark@linaro.org>
• COOLING8d REVIEWED: 1 (1M) [PATCH v3 3/5] tools/build: Allow versioning LLVM readelf
  2026-07-15 · James Clark <james.clark@linaro.org>
• WARM1d [PATCH v3 18/21] perf annotate-arm64: Support 'add' instruction tracking
  2026-07-01 · Tengda Wu <hidden>
• WARM1d [PATCH v3 21/21] perf annotate-arm64: Support 'mrs' instruction to track 'current' pointer
  2026-07-01 · Tengda Wu <hidden>
• WARM1d [PATCH v3 15/21] perf annotate-arm64: Support store instruction tracking
  2026-07-01 · Tengda Wu <hidden>
• WARM1d [PATCH v3 17/21] perf annotate-arm64: Support 'mov' instruction tracking
  2026-07-01 · Tengda Wu <hidden>
• WARM1d [PATCH v3 20/21] perf annotate-arm64: Support per-cpu variable access tracking
  2026-07-01 · Tengda Wu <hidden>
• WARM1d [PATCH v3 11/21] perf auxtrace: Set default period to 1 for PERF_ITRACE_PERIOD_INSTRUCTIONS type
  2026-07-01 · Tengda Wu <hidden>
• WARM1d [PATCH v3 13/21] perf annotate-arm64: Enable instruction tracking support
  2026-07-01 · Tengda Wu <hidden>
• WARM1d [PATCH v3 19/21] perf annotate-arm64: Support 'adrp' instruction to track global variables
  2026-07-01 · Tengda Wu <hidden>
• WARM1d [PATCH v3 16/21] perf annotate-arm64: Support stack variable tracking
  2026-07-01 · Tengda Wu <hidden>
• WARM1d [PATCH v3 14/21] perf annotate-arm64: Support load instruction tracking
  2026-07-01 · Tengda Wu <hidden>
• WARM1d [PATCH v3 01/21] perf capstone: Fix kernel map reference count leak
  2026-07-01 · Tengda Wu <hidden>
• WARM1d [PATCH v3 12/21] perf annotate-data: Extract invalidate_reg_state() as a common helper
  2026-07-01 · Tengda Wu <hidden>
• WARM1d [PATCH v3 03/21] perf llvm: Fix arm64 adrp instruction disassembly mismatch with objdump
  2026-07-01 · Tengda Wu <hidden>
• WARM1d [PATCH v3 09/21] perf annotate-arm64: Implement extract_op_location() callback
  2026-07-01 · Tengda Wu <hidden>
• WARM1d [PATCH v3 08/21] perf annotate: Introduce extract_op_location callback for arch-specific parsing
  2026-07-01 · Tengda Wu <hidden>
• WARM1d [PATCH v3 10/21] perf annotate: Deduplicate overlapping ARM SPE events for data type profiling
  2026-07-01 · Tengda Wu <hidden>
• WARM1d [PATCH v3 04/21] perf annotate-arm64: Generalize arm64_mov__parse to support more instructions
  2026-07-01 · Tengda Wu <hidden>
• WARM1d [PATCH v3 06/21] perf dwarf-regs: Adapt get_dwarf_regnum() for arm64
  2026-07-01 · Tengda Wu <hidden>
• WARM1d [PATCH v3 07/21] perf annotate: Adapt arch__dwarf_regnum() for arm64
  2026-07-01 · Tengda Wu <hidden>
• WARM1d [PATCH v3 02/21] perf capstone: Fix arm64 jump/adrp disassembly mismatch with objdump
  2026-07-01 · Tengda Wu <hidden>
• WARM1d [PATCH v3 05/21] perf annotate-arm64: Handle load and store instructions
  2026-07-01 · Tengda Wu <hidden>
• COLD42d [PATCH] perf s390: Fix TEXTREL in Python extension by compiling as PIC
  2026-06-10 · Jens Remus <hidden>
• COLD37d [PATCH stable 6.1 v2 5/5] perf build: Remove -Wno-unused-but-set-variable from the flex flags when building with clang < 13.0.0
  2026-05-20 · Florian Fainelli <florian.fainelli@broadcom.com>
• COLD37d [PATCH stable 6.1 v2 3/5] perf build: Disable fewer bison warnings
  2026-05-20 · Florian Fainelli <florian.fainelli@broadcom.com>
• COLD37d REVIEWED: 1 (1M) [PATCH stable 6.1 v2 2/5] perf parse-events: Make YYDEBUG dependent on doing a debug build
  2026-05-20 · Florian Fainelli <florian.fainelli@broadcom.com>
• COLD37d [PATCH stable 6.1 v2 1/5] perf build: Conditionally define NDEBUG
  2026-05-20 · Florian Fainelli <florian.fainelli@broadcom.com>

Quiet for 30+ days

Patches with no review trailers and no replies. Either the author is heads-down elsewhere or these slipped through. Oldest first.

• STALE173d [PATCH v9 2/3] perf llvm: Support for dlopen-ing libLLVM.so
  2026-01-27 · Ian Rogers <irogers@google.com>
• STALE173d [PATCH v9 3/3] perf llvm: Mangle libperf-llvm.so function names
  2026-01-27 · Ian Rogers <irogers@google.com>
• STALE173d [PATCH v10 1/3] perf capstone: Support for dlopen-ing libcapstone.so
  2026-01-30 · Ian Rogers <irogers@google.com>
• STALE173d [PATCH v10 2/3] perf llvm: Support for dlopen-ing libLLVM.so
  2026-01-30 · Ian Rogers <irogers@google.com>
• DORMANTno replies [PATCH v10 3/3] perf llvm: Mangle libperf-llvm.so function names
  2026-01-30 · Ian Rogers <irogers@google.com>
• STALE134d [PATCH v3 07/30] perf build: Append extra host flags
  2026-03-08 · Leo Yan <leo.yan@arm.com>
• STALE87d [PATCH v2 10/16] perf annotate-arm64: Support store instruction tracking
  2026-04-03 · Tengda Wu <hidden>
• STALE87d [PATCH v2 06/16] perf dwarf-regs: Adapt get_dwarf_regnum() for arm64
  2026-04-03 · Tengda Wu <hidden>
• STALE87d [PATCH v2 01/16] perf llvm: Fix arm64 adrp instruction disassembly mismatch with objdump
  2026-04-03 · Tengda Wu <hidden>
• STALE87d [PATCH v2 05/16] perf annotate: Introduce extract_op_location callback for arch-specific parsing
  2026-04-03 · Tengda Wu <hidden>