[Patch v8 0/5] Perf tools: Support eGPRs/SSP/SIMD registers sampling

[Dapeng Mi]

Changes since v7:
- Address Sashiko's comments including,
  * documents are not update availably; SIMD registers bitmask may be
    overwritten by shorter mask; u16 type in sample meta-data break the
    cross-endian conversion, etc.
- Add SIMD/eGPRs/SSP support in dwarf-regs (Ian).
- Misc enhancements.

Changes since v6:
- Address Ian's comments including,
  * Add more comments for newly added register indexes (patch 1/4).
  * Several minor enhancements in patch 4/4.
- Limit dwarf minimal regs to legacy GPRs (excluding APX eGPRs)
  (patch 2/4).

Changes since v5:
- Split the sampling support for eGPRs/SSP registers and SIMD registers
  into 2 patches.
- Address Ian's comments including,
  * Convert the architecture dependent functions into regular
    architectural independent functions, like whatperf_reg_name() does.
  * Refine the functions name to represent what the functions really do.
  * Add comments for some key functions arguments.
  * Misc enhancements.

This patch-set adds sampling support for x86 eGPRs/SSP/SIMD registers in
perf tools base on the corresponding sampling support for eGPRs/SSP/SIMD
registers in kernel[1]. In versions before v6, these perf-tools patches
are integrated as a whole patch-set with the kernel patches, but it's
split and posted to an independent perf-tools patch-set for convenient
review.

History:
v7: https://lore.kernel.org/all/20260324005706.3778057-1-dapeng1.mi@xxxxxxxxxxxxxxx/
v6: https://lore.kernel.org/all/20260209083514.2225115-1-dapeng1.mi@xxxxxxxxxxxxxxx/
v5: https://lore.kernel.org/all/20251203065500.2597594-1-dapeng1.mi@xxxxxxxxxxxxxxx/
v4: https://lore.kernel.org/all/20250925061213.178796-1-dapeng1.mi@xxxxxxxxxxxxxxx/
v3: https://lore.kernel.org/lkml/20250815213435.1702022-1-kan.liang@xxxxxxxxxxxxxxx/
v2: https://lore.kernel.org/lkml/20250626195610.405379-1-kan.liang@xxxxxxxxxxxxxxx/
v1: https://lore.kernel.org/lkml/20250613134943.3186517-1-kan.liang@xxxxxxxxxxxxxxx/

Ref:
[1] Kernel patches of supporting eGPRs/SSP/SIMD registers sampling:
https://lore.kernel.org/all/20260529075645.580362-1-dapeng1.mi@xxxxxxxxxxxxxxx/


Dapeng Mi (5):
  perf headers: Sync perf_event.h/perf_regs.h with the kernel headers
  perf regs: Support x86 eGPRs/SSP sampling
  perf regs: Support x86 SIMD registers sampling
  perf regs: Enable dumping of SIMD registers
  perf dwarf-regs: Add SIMD/eGPRs support for x86 DWARF registers

 tools/arch/x86/include/uapi/asm/perf_regs.h   |  51 +++
 tools/include/uapi/linux/perf_event.h         |  49 ++-
 tools/perf/Documentation/perf-record.txt      |  10 +-
 tools/perf/builtin-inject.c                   |   7 +
 tools/perf/builtin-script.c                   |   2 +-
 .../util/dwarf-regs-arch/dwarf-regs-x86.c     | 138 +++++-
 tools/perf/util/dwarf-regs.c                  |   7 +-
 tools/perf/util/evsel.c                       | 104 ++++-
 tools/perf/util/header.c                      |   3 +-
 tools/perf/util/include/dwarf-regs.h          |   7 +-
 tools/perf/util/intel-pt.c                    |   1 +
 tools/perf/util/parse-regs-options.c          | 184 +++++++-
 .../perf/util/perf-regs-arch/perf_regs_x86.c  | 416 +++++++++++++++++-
 tools/perf/util/perf_event_attr_fprintf.c     |   6 +
 tools/perf/util/perf_regs.c                   |  84 +++-
 tools/perf/util/perf_regs.h                   |  21 +-
 tools/perf/util/record.h                      |   7 +
 tools/perf/util/sample.h                      |   5 +
 .../scripting-engines/trace-event-python.c    |   2 +-
 tools/perf/util/session.c                     |  91 +++-
 tools/perf/util/synthetic-events.c            |  28 ++
 tools/perf/util/unwind-libdw.c                |   6 +-
 22 files changed, 1143 insertions(+), 86 deletions(-)

-- 
2.34.1