[v3,00/11] coresight: etm4x: Fixes and updates for sysfs API

Message

Mike Leach Oct. 15, 2019, 9:19 p.m. UTC

Review of ETMV4 sysfs code resulted in a number of minor issues being
discovered.

Patch set fixes these issues:-
1) Update for ETM v4.4 archtecture.
2) Add missing single shot comparator API.
3) Misc fixes and improvements to sysfs API
4) Updated programmers documentation and reference.

Changes since v2 (reviews from Mathieu and Leo):-
  Patch 0002 now adds stable tag. Tested on 4.9, 4.14, 4.19
  Applies to coresight/next (5.4-rc1)
  Documentation changed to .rst format to match recent updates that
  converted other CoreSight .txt files.
  Misc typo / comment changes.

Changes since v1 (from reviews by Mathieu and Leo):-
  Usability patch split into 2 separate functional patches.
  Docs patch split into 3 patches.
  Misc style and comment typo fixes.

Mike Leach (11):
  coresight: etm4x: Fixes for ETM v4.4 architecture updates.
  coresight: etm4x: Fix input validation for sysfs.
  coresight: etm4x: Add missing API to set EL match on address filters
  coresight: etm4x: Fix issues with start-stop logic.
  coresight: etm4x: Improve usability of sysfs - include/exclude addr.
  coresight: etm4x: Improve usability of sysfs - CID and VMID masks.
  coresight: etm4x: Add view comparator settings API to sysfs.
  coresight: etm4x: Add missing single-shot control API to sysfs
  coresight: etm4x: docs: Update ABI doc for sysfs features added.
  coresight: docs: Create common sub-directory for coresight trace.
  coresight: etm4x: docs: Adds detailed document for programming etm4x.

 .../testing/sysfs-bus-coresight-devices-etm4x | 183 ++--
 .../{ => coresight}/coresight-cpu-debug.rst   |   0
 .../coresight/coresight-etm4x-reference.rst   | 798 ++++++++++++++++++
 .../trace/{ => coresight}/coresight.rst       |   2 +-
 Documentation/trace/{ => coresight}/stm.rst   |   0
 MAINTAINERS                                   |   3 +-
 .../coresight/coresight-etm4x-sysfs.c         | 312 ++++++-
 drivers/hwtracing/coresight/coresight-etm4x.c |  32 +-
 drivers/hwtracing/coresight/coresight-etm4x.h |  17 +-
 9 files changed, 1245 insertions(+), 102 deletions(-)
 rename Documentation/trace/{ => coresight}/coresight-cpu-debug.rst (100%)
 create mode 100644 Documentation/trace/coresight/coresight-etm4x-reference.rst
 rename Documentation/trace/{ => coresight}/coresight.rst (99%)
 rename Documentation/trace/{ => coresight}/stm.rst (100%)