[PATCH v3 0/4] perf: cs-etm: HW_ID improvements

[James Clark]

The driver might not always be able to write HW_IDs, but we don't need
them for unformatted mode anyway, so fix that in commit ("perf cs-etm:
Synthesize missing HW_ID mappings for raw trace").

Include some other minor improvements encountered on the way to appease
Sashiko, like properly freeing queues and ("perf: cs-etm: Respect
--no-itrace option") makes debugging broken Coresight perf.data files
easier.

Signed-off-by: James Clark <james.clark@xxxxxxxxxx>
---
Changes in v3:
- Remove old b4 prerequisite metadata that's no longer relevant.
- Link to v2: https://patch.msgid.link/20261002-james-cs-hw_id-output-failure-v2-0-7a194aa61173@xxxxxxxxxx

Changes in v2:
- Drop driver changes and move to https://lore.kernel.org/linux-perf-users/20261001-james-cs-retry-hw_id-v1-0-4d45ab46cde7@xxxxxxxxxx/T/#t
- Don't process any HW_IDs for unformatted queues, just create decoders
  unconditionally with trace ID 1.
- Use zfree() instead of etmq->decoder = NULL
- Remove dependency on "[PATCH v2 00/14] perf cs-etm: Per-thread mode
  fixes and snapshot wrap support", it wasn't functionally dependant,
  just touching some of the same lines.
- Link to v1: https://patch.msgid.link/20260821-james-cs-hw_id-output-failure-v1-0-9d532ddabcc3@xxxxxxxxxx

---
James Clark (3):
      perf: cs-etm: Don't add global v0 HW_IDs to unformatted queues
      perf cs-etm: Free partially created queues
      perf: cs-etm: Respect --no-itrace option

Leo Yan (1):
      perf cs-etm: Synthesize missing HW_ID mappings for raw trace

 tools/perf/util/auxtrace.c                      |   2 +-
 tools/perf/util/auxtrace.h                      |   1 +
 tools/perf/util/cs-etm-decoder/cs-etm-decoder.c |  12 +-
 tools/perf/util/cs-etm-decoder/cs-etm-decoder.h |   2 +-
 tools/perf/util/cs-etm.c                        | 184 +++++++++++++++---------
 5 files changed, 123 insertions(+), 78 deletions(-)
---
base-commit: 705da5b15ab89ba97b11eedbe507c2fd83d31cb9
change-id: 20260706-james-cs-hw_id-output-failure-1d06d042ef96

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