[Patch v3 00/22] Arch-PEBS and PMU supports for Clearwater Forest and Panther Lake

[Dapeng Mi <dapeng1.mi@linux.intel.com>]

This v3 patch serires is based on latest perf/core tree "5c3627b6f059
 perf/x86/intel/bts: Replace offsetof() with struct_size()" plus extra 2
patches in patchset "perf/x86/intel: Don't clear perf metrics overflow
 bit unconditionally"[1].

Changes:
  v2 -> v3:
  * Rebase patches to 6.15-rc1 code base.
  * Refactor arch-PEBS buffer allocation/release code, decouple with
    legacy PEBS buffer allocation/release code.
  * Support to capture SSP/XMM/YMM/ZMM registers for user space registers
    sampling (--user-regs options) with PEBS events.
  * Fix incorrect sampling frequency issue in frequency sampling mode.
  * Misc changes to address other v2 comments.

Tests:
  Run below tests on Clearwater Forest and Pantherlake, no issue is
  found.
  
  1. Basic perf counting case.
    perf stat -e '{branches,branches,branches,branches,branches,branches,branches,branches,cycles,instructions,ref-cycles}' sleep 1

  2. Basic PMI based perf sampling case.
    perf record -e '{branches,branches,branches,branches,branches,branches,branches,branches,cycles,instructions,ref-cycles}' sleep 1

  3. Basic PEBS based perf sampling case.
    perf record -e '{branches,branches,branches,branches,branches,branches,branches,branches,cycles,instructions,ref-cycles}:p' sleep 1

  4. PEBS sampling case with basic, GPRs, vector-registers and LBR groups
    perf record -e branches:p -Iax,bx,ip,ssp,xmm0,ymm0 -b -c 10000 sleep 1

  5. User space PEBS sampling case with basic, GPRs, vector-registers and LBR groups
    perf record -e branches:pu --user-regs=ax,bx,ip,ssp,xmm0,ymm0 -b -c 10000 sleep 1

  6 PEBS sampling case with auxiliary (memory info) group
    perf mem record sleep 1

  7. PEBS sampling case with counter group
    perf record -e '{branches:p,branches,cycles}:S' -c 10000 sleep 1

  8. Perf stat and record test
    perf test 92; perf test 120

  9. perf-fuzzer test


History:
  v2: https://lore.kernel.org/all/20250218152818.158614-1-dapeng1.mi@linux.intel.com/
  v1: https://lore.kernel.org/all/20250123140721.2496639-1-dapeng1.mi@linux.intel.com/

Ref:
  [1]: https://lore.kernel.org/all/20250415104135.318169-1-dapeng1.mi@linux.intel.com/


Dapeng Mi (21):
  perf/x86/intel: Add PMU support for Clearwater Forest
  perf/x86/intel: Parse CPUID archPerfmonExt leaves for non-hybrid CPUs
  perf/x86/intel: Decouple BTS initialization from PEBS initialization
  perf/x86/intel: Rename x86_pmu.pebs to x86_pmu.ds_pebs
  perf/x86/intel: Introduce pairs of PEBS static calls
  perf/x86/intel: Initialize architectural PEBS
  perf/x86/intel/ds: Factor out PEBS record processing code to functions
  perf/x86/intel/ds: Factor out PEBS group processing code to functions
  perf/x86/intel: Process arch-PEBS records or record fragments
  perf/x86/intel: Allocate arch-PEBS buffer and initialize PEBS_BASE MSR
  perf/x86/intel: Update dyn_constranit base on PEBS event precise level
  perf/x86/intel: Setup PEBS data configuration and enable legacy groups
  perf/x86/intel: Add counter group support for arch-PEBS
  perf/x86/intel: Support SSP register capturing for arch-PEBS
  perf/core: Support to capture higher width vector registers
  perf/x86/intel: Support arch-PEBS vector registers group capturing
  perf tools: Support to show SSP register
  perf tools: Enhance arch__intr/user_reg_mask() helpers
  perf tools: Enhance sample_regs_user/intr to capture more registers
  perf tools: Support to capture more vector registers (x86/Intel)
  perf tools/tests: Add vector registers PEBS sampling test

Kan Liang (1):
  perf/x86/intel: Add Panther Lake support

 arch/arm/kernel/perf_regs.c                   |   6 +
 arch/arm64/kernel/perf_regs.c                 |   6 +
 arch/csky/kernel/perf_regs.c                  |   5 +
 arch/loongarch/kernel/perf_regs.c             |   5 +
 arch/mips/kernel/perf_regs.c                  |   5 +
 arch/powerpc/perf/perf_regs.c                 |   5 +
 arch/riscv/kernel/perf_regs.c                 |   5 +
 arch/s390/kernel/perf_regs.c                  |   5 +
 arch/x86/events/core.c                        | 136 +++-
 arch/x86/events/intel/bts.c                   |   6 +-
 arch/x86/events/intel/core.c                  | 329 +++++++-
 arch/x86/events/intel/ds.c                    | 714 ++++++++++++++----
 arch/x86/events/perf_event.h                  |  60 +-
 arch/x86/include/asm/intel_ds.h               |  10 +-
 arch/x86/include/asm/msr-index.h              |  26 +
 arch/x86/include/asm/perf_event.h             | 145 +++-
 arch/x86/include/uapi/asm/perf_regs.h         |  83 +-
 arch/x86/kernel/perf_regs.c                   |  71 +-
 include/linux/perf_event.h                    |   4 +
 include/linux/perf_regs.h                     |  10 +
 include/uapi/linux/perf_event.h               |  11 +
 kernel/events/core.c                          |  98 ++-
 tools/arch/x86/include/uapi/asm/perf_regs.h   |  86 ++-
 tools/include/uapi/linux/perf_event.h         |  14 +
 tools/perf/arch/arm/util/perf_regs.c          |   8 +-
 tools/perf/arch/arm64/util/perf_regs.c        |  11 +-
 tools/perf/arch/csky/util/perf_regs.c         |   8 +-
 tools/perf/arch/loongarch/util/perf_regs.c    |   8 +-
 tools/perf/arch/mips/util/perf_regs.c         |   8 +-
 tools/perf/arch/powerpc/util/perf_regs.c      |  17 +-
 tools/perf/arch/riscv/util/perf_regs.c        |   8 +-
 tools/perf/arch/s390/util/perf_regs.c         |   8 +-
 tools/perf/arch/x86/util/perf_regs.c          | 138 +++-
 tools/perf/builtin-script.c                   |  23 +-
 tools/perf/tests/shell/record.sh              |  55 ++
 tools/perf/util/evsel.c                       |  36 +-
 tools/perf/util/intel-pt.c                    |   2 +-
 tools/perf/util/parse-regs-options.c          |  23 +-
 .../perf/util/perf-regs-arch/perf_regs_x86.c  |  84 +++
 tools/perf/util/perf_regs.c                   |   8 +-
 tools/perf/util/perf_regs.h                   |  20 +-
 tools/perf/util/record.h                      |   4 +-
 tools/perf/util/sample.h                      |   6 +-
 tools/perf/util/session.c                     |  29 +-
 tools/perf/util/synthetic-events.c            |  12 +-
 45 files changed, 2075 insertions(+), 286 deletions(-)


base-commit: 538f1f04b5bfeaff4cd681b2567a0fde2335be38
-- 
2.40.1