[PATCH v3 00/14] perf arm-spe: Support new events in FEAT_SPEv1p4

[Leo Yan]

This series adds support for new event types introduced in Arm SPE v1.4.

The first patch modifies the Arm SPE driver to expose 'event_filter'
entry in SysFS caps folder. This allows users to discover the event
filter is supported by the hardware.

Patch 02 is a fixing for setting remote bit. Patch 03 is for fixing
memory level info for remote access.

Patch 04 is a refactoring for using full type for data_src.

Patch 05 refactors the code to avoid duplicate definitions of event
bits.

Patch 06 dumps new event bits in raw format via the 'perf script -D'
command.

Patches 07 to 13 enhance memory-level information based on the new
events introduced in FEAT_SPEv1p4.

Patch 14 changes the logic to parse events after data source analysis.
The event information complements the data source and provides a more
complete view. As a result, Arm SPE can now support both HITM and peer
modes (See the "--display" options in perf c2c).

This series has been tested on FVP RevC platform.

Note: for a local HITM event, the emulation does not provide any info
for LLC. However, the perf c2c tool relies on LLC + HITM for accounting
local HITM. I to manually set the LLC HIT flag to verify the
"perf c2c -d tot" command.

---
Changes in v3:
- Retrieve CPU number from PMU type (Ian).
- Link to v2: https://lore.kernel.org/r/20250630-arm_spe_support_hitm_overhead_v1_public-v2-0-2e1afab313b9@arm.com

Changes in v2:
- Dropped the kernel change for caching "pmsevfr_res0" (James)
- Renamed the "events" entry to "event_filter" (James)
- Added a new refactoring patch 04 (James)
- Updated memory level info for remote access (James)
- Link to v1: https://lore.kernel.org/r/20250613-arm_spe_support_hitm_overhead_v1_public-v1-0-6faecf0a8775@arm.com

---
James Clark (1):
      perf arm_spe: Use full type for data_src

Leo Yan (13):
      drivers/perf: arm_spe: Expose event filter
      perf arm_spe: Correct setting remote access
      perf arm_spe: Correct memory level for remote access
      perf arm_spe: Directly propagate raw event
      perf arm_spe: Decode event types for new features
      perf arm_spe: Add "event_filter" entry in meta data
      perf arm_spe: Refine memory level filling
      perf arm_spe: Separate setting of memory levels for loads and stores
      perf arm_spe: Fill memory levels for FEAT_SPEv1p4
      perf arm_spe: Improve CPU number retrieving in per-thread mode
      perf arm_spe: Refactor arm_spe__get_metadata_by_cpu()
      perf arm_spe: Set HITM flag
      perf arm_spe: Allow parsing both data source and events

 drivers/perf/arm_spe_pmu.c                         |  36 ++--
 tools/perf/arch/arm64/util/arm-spe.c               |   5 +
 tools/perf/util/arm-spe-decoder/arm-spe-decoder.c  |  37 +---
 tools/perf/util/arm-spe-decoder/arm-spe-decoder.h  |  33 ++--
 .../util/arm-spe-decoder/arm-spe-pkt-decoder.c     |  14 ++
 .../util/arm-spe-decoder/arm-spe-pkt-decoder.h     |   7 +
 tools/perf/util/arm-spe.c                          | 220 ++++++++++++++++-----
 tools/perf/util/arm-spe.h                          |   2 +
 8 files changed, 234 insertions(+), 120 deletions(-)
---
base-commit: d7b8f8e20813f0179d8ef519541a3527e7661d3a
change-id: 20250610-arm_spe_support_hitm_overhead_v1_public-c4a263385434

Best regards,
-- 
Leo Yan <leo.yan at arm.com>