[PATCH v5 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 two patches modify the SPE driver to expose 'event_filter'
entry in SysFS caps folder. These patches are part of James' series
"[PATCH v8 00/12] perf: arm_spe: Armv8.8 SPE features" [1]. In case this
series will be merged independently of James' series, these patches have
have been included here.

Patches 03 ~ 14 are support new events in Perf tool:

  * Patches 03 ~ 04: Fix for remote access.
  * Patches 05 ~ 06: Refactor for data source and event bits.
  * Patch 07       : Dump new event bits.
  * Patches 08 ~ 13: Enhance memory-level info for the new events.
  * Patch 14       : Combine analysis of data source and events.
		     As a result, Arm SPE can 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 manually set the LLC HIT flag to verify the
"perf c2c report -d tot" command.

[1] https://lore.kernel.org/linux-arm-kernel/20250901-james-perf-feat_spe_eft-v8-0-2e2738f24559@linaro.org/

---
Changes in v5:
- Dropped retrieving CPU ID with perf_pmus__find_by_type() (James)
- Added James's tags and rebased on latest perf next branch.
- Link to v4: https://lore.kernel.org/r/20250731-arm_spe_support_hitm_overhead_v1_public-v4-0-58e5677a412b@arm.com

Changes in v4:
- Refactor exposing event filter in SPE driver (Will).
- Rebased on latest perf-tools-next branch.
- Link to v3: https://lore.kernel.org/r/20250707-arm_spe_support_hitm_overhead_v1_public-v3-0-33ea82da3280@arm.com

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 (2):
      perf: arm_spe: Support FEAT_SPEv1p4 filters
      perf arm_spe: Use full type for data_src

Leo Yan (12):
      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: Refactor arm_spe__get_metadata_by_cpu()
      perf arm_spe: Set HITM flag
      perf arm_spe: Allow parsing both data source and events

 arch/arm64/include/asm/sysreg.h                    |   9 -
 drivers/perf/arm_spe_pmu.c                         |  45 +++--
 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                          | 210 +++++++++++++++------
 tools/perf/util/arm-spe.h                          |   2 +
 9 files changed, 231 insertions(+), 131 deletions(-)
---
base-commit: 1e5881b168b94871fecd4603633a5fe6a519cbbf
change-id: 20250610-arm_spe_support_hitm_overhead_v1_public-c4a263385434

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