linux-kernel - [PATCH v9 0/5] perf: arm

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Message-Id: <20251029-james-perf-feat_spe_eft-v9-0-d22536b9cf94@linaro.org>
Date: Wed, 29 Oct 2025 15:46:00 +0000
From: James Clark <james.clark@...aro.org>
To: Catalin Marinas <catalin.marinas@....com>, 
 Will Deacon <will@...nel.org>, Mark Rutland <mark.rutland@....com>, 
 Jonathan Corbet <corbet@....net>, Marc Zyngier <maz@...nel.org>, 
 Oliver Upton <oliver.upton@...ux.dev>, Joey Gouly <joey.gouly@....com>, 
 Suzuki K Poulose <suzuki.poulose@....com>, 
 Zenghui Yu <yuzenghui@...wei.com>, Peter Zijlstra <peterz@...radead.org>, 
 Ingo Molnar <mingo@...hat.com>, Arnaldo Carvalho de Melo <acme@...nel.org>, 
 Namhyung Kim <namhyung@...nel.org>, 
 Alexander Shishkin <alexander.shishkin@...ux.intel.com>, 
 Jiri Olsa <jolsa@...nel.org>, Ian Rogers <irogers@...gle.com>, 
 Adrian Hunter <adrian.hunter@...el.com>, Leo Yan <leo.yan@....com>, 
 Anshuman Khandual <anshuman.khandual@....com>
Cc: linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org, 
 linux-perf-users@...r.kernel.org, linux-doc@...r.kernel.org, 
 kvmarm@...ts.linux.dev, James Clark <james.clark@...aro.org>
Subject: [PATCH v9 0/5] perf: arm_spe: Armv8.8 SPE features

Support SPE_FEAT_FDS data source filtering.

---
Changes in v9:
- Fix another typo in docs: s/data_src_filter/inv_data_src_filter/g
- Drop already applied patches for other features. Only the data source
  filtering patches remain.
- Rebase on latest perf-tools-next
- Link to v8: https://lore.kernel.org/r/20250901-james-perf-feat_spe_eft-v8-0-2e2738f24559@linaro.org

Changes in v8:
- Define __spe_vers_imp before it's used
- "disable traps to PMSDSFR" -> "disable traps of PMSDSFR to EL2"
- Link to v7: https://lore.kernel.org/r/20250814-james-perf-feat_spe_eft-v7-0-6a743f7fa259@linaro.org

Changes in v7:
- Fix typo in docs: s/data_src_filter/inv_data_src_filter/g
- Pickup trailers
- Link to v6: https://lore.kernel.org/r/20250808-james-perf-feat_spe_eft-v6-0-6daf498578c8@linaro.org

Changes in v6:
- Rebase to resolve conflict with BRBE changes in el2_setup.h
- Link to v5: https://lore.kernel.org/r/20250721-james-perf-feat_spe_eft-v5-0-a7bc533485a1@linaro.org

Changes in v5:
- Forgot to pickup tags from v4
- Forgot to drop test and review tags on v4 patches that were
  significantly modified
- Update commit message for data source filtering to mention inversion
- Link to v4: https://lore.kernel.org/r/20250721-james-perf-feat_spe_eft-v4-0-0a527410f8fd@linaro.org

Changes in v4:
- Rewrite "const u64 feat_spe_eft_bits" inline
- Invert data source filter so that it's possible to exclude all data
  sources without adding an additional 'enable filter' flag
- Add a macro in el2_setup.h to check for an SPE version
- Probe valid filter bits instead of hardcoding them
- Take in Leo's commit to expose the filter bits as it depends on the
  new filter probing
- Link to v3: https://lore.kernel.org/r/20250605-james-perf-feat_spe_eft-v3-0-71b0c9f98093@linaro.org

Changes in v3:
- Use PMSIDR_EL1_FDS instead of 1 << PMSIDR_EL1_FDS_SHIFT
- Add VNCR offsets
- Link to v2: https://lore.kernel.org/r/20250529-james-perf-feat_spe_eft-v2-0-a01a9baad06a@linaro.org

Changes in v2:
- Fix detection of FEAT_SPE_FDS in el2_setup.h
- Pickup Marc Z's sysreg change instead which matches the json
- Restructure and expand docs changes
- Link to v1: https://lore.kernel.org/r/20250506-james-perf-feat_spe_eft-v1-0-dd480e8e4851@linaro.org

---
James Clark (5):
      perf: Add perf_event_attr::config4
      perf: arm_spe: Add support for filtering on data source
      tools headers UAPI: Sync linux/perf_event.h with the kernel sources
      perf tools: Add support for perf_event_attr::config4
      perf docs: arm-spe: Document new SPE filtering features

 drivers/perf/arm_spe_pmu.c                |  37 +++++++++++
 include/uapi/linux/perf_event.h           |   2 +
 tools/include/uapi/linux/perf_event.h     |   2 +
 tools/perf/Documentation/perf-arm-spe.txt | 104 +++++++++++++++++++++++++++---
 tools/perf/tests/parse-events.c           |  13 +++-
 tools/perf/util/parse-events.c            |  11 ++++
 tools/perf/util/parse-events.h            |   1 +
 tools/perf/util/parse-events.l            |   1 +
 tools/perf/util/pmu.c                     |   8 +++
 tools/perf/util/pmu.h                     |   1 +
 10 files changed, 170 insertions(+), 10 deletions(-)
---
base-commit: ab29ff9f6fe06d23c16b5565fcae96bad21be900
change-id: 20250312-james-perf-feat_spe_eft-66cdf4d8fe99

Best regards,
-- 
James Clark <james.clark@...aro.org>