[PATCH v2 00/14] rv: Add selftests to tools and KUnit tests

[Gabriele Monaco <gmonaco@redhat.com>]

This series adds support to the make check target in the rv userspace
tool and the rvgen script, this allows to quickly validate its
functionality. The selftest framework is inspired by the one used in
RTLA.

A few bugs in both tools were also discovered and are fixed as part of
this series.

Additionally it adds unit tests for models. This is achieved by running
the handlers functions directly within KUnit, emulating all modules
paths as if real kernel events fired.

Unit tests emulate a series of events that are expected to trigger
violations and checks that a reaction occurred, stub structs and
functions are used so the kernel is not affected by the test.

Differences since RFC [1]:
* Fix issue with LTL generator printing literals as uppercase
* Add missing state label in selftest dot spec
* Fail selftest if pid was required but not found (harness error)
* Remove useless static keywords in KUnit tests
* Assert after kunit_kzalloc()
* Use RV_KUNIT_EXPECT_REACTION_HERE to avoid false positives
* Prevent running RV monitors and events together with KUnit
* Rearrange KUnit testing headers
* Expect no reaction at the end of KUnit test cases
* Fix broken nomiss test and allocation

[1] - https://lore.kernel.org/lkml/20260427151134.192971-1-gmonaco@redhat.com

To: linux-trace-kernel@vger.kernel.org
To: linux-kernel@vger.kernel.org
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: Nam Cao <namcao@linutronix.de>
Cc: Thomas Weissschuh <thomas.weissschuh@linutronix.de>
Cc: Tomas Glozar <tglozar@redhat.com>
Cc: John Kacur <jkacur@redhat.com>
Cc: Wen Yang <wen.yang@linux.dev>

Gabriele Monaco (14):
  tools/rv: Fix substring match bug in monitor name search
  tools/rv: Fix substring match when listing container monitors
  tools/rv: Fix exit status when monitor execution fails
  tools/rv: Fix cleanup after failed trace setup
  tools/rv: Add selftests
  verification/rvgen: Fix options shared among commands
  verification/rvgen: Fix ltl2k writing True as a literal
  verification/rvgen: Add golden and spec folders for tests
  verification/rvgen: Add selftests
  rv: Add KUnit stub to rv_react() and rv_*_task_monitor_slot()
  rv: Add KUnit tests for some DA/HA monitors
  rv: Add KUnit stubs for current and smp_processor_id()
  rv: Prevent unintentional tracepoints during KUnit tests
  rv: Add KUnit tests for some LTL monitors

 include/rv/da_monitor.h                       |  38 +++
 include/rv/instrumentation.h                  |   5 +
 include/rv/kunit.h                            |  59 +++++
 include/rv/ltl_monitor.h                      |  38 +++
 kernel/trace/rv/Kconfig                       |  14 +
 kernel/trace/rv/Makefile                      |   1 +
 kernel/trace/rv/monitors/nomiss/nomiss.c      |  44 ++++
 kernel/trace/rv/monitors/opid/opid.c          |  26 ++
 .../trace/rv/monitors/pagefault/pagefault.c   |  27 +-
 kernel/trace/rv/monitors/sco/sco.c            |  24 ++
 kernel/trace/rv/monitors/sleep/sleep.c        |  76 +++++-
 kernel/trace/rv/monitors/sssw/sssw.c          |  29 ++
 kernel/trace/rv/monitors/sts/sts.c            |  35 +++
 kernel/trace/rv/rv.c                          |   5 +
 kernel/trace/rv/rv_monitors_test.c            | 166 ++++++++++++
 kernel/trace/rv/rv_reactors.c                 |   7 +
 tools/verification/rv/Makefile                |   5 +-
 tools/verification/rv/src/in_kernel.c         |  58 ++--
 tools/verification/rv/src/rv.c                |   2 +-
 tools/verification/rv/tests/rv_list.t         |  48 ++++
 tools/verification/rv/tests/rv_mon.t          |  95 +++++++
 tools/verification/rvgen/Makefile             |   4 +
 tools/verification/rvgen/__main__.py          |  10 +-
 tools/verification/rvgen/rvgen/ltl2ba.py      |   9 +-
 .../rvgen/tests/golden/da_global/Kconfig      |   9 +
 .../rvgen/tests/golden/da_global/da_global.c  |  95 +++++++
 .../rvgen/tests/golden/da_global/da_global.h  |  47 ++++
 .../tests/golden/da_global/da_global_trace.h  |  15 ++
 .../tests/golden/da_perobj_parent/Kconfig     |  11 +
 .../da_perobj_parent/da_perobj_parent.c       | 110 ++++++++
 .../da_perobj_parent/da_perobj_parent.h       |  64 +++++
 .../da_perobj_parent/da_perobj_parent_trace.h |  15 ++
 .../tests/golden/da_pertask_desc/Kconfig      |   9 +
 .../golden/da_pertask_desc/da_pertask_desc.c  | 105 ++++++++
 .../golden/da_pertask_desc/da_pertask_desc.h  |  64 +++++
 .../da_pertask_desc/da_pertask_desc_trace.h   |  15 ++
 .../rvgen/tests/golden/ha_percpu/Kconfig      |   9 +
 .../rvgen/tests/golden/ha_percpu/ha_percpu.c  | 244 +++++++++++++++++
 .../rvgen/tests/golden/ha_percpu/ha_percpu.h  |  72 +++++
 .../tests/golden/ha_percpu/ha_percpu_trace.h  |  19 ++
 .../rvgen/tests/golden/ltl_pertask/Kconfig    |   9 +
 .../tests/golden/ltl_pertask/ltl_pertask.c    | 107 ++++++++
 .../tests/golden/ltl_pertask/ltl_pertask.h    | 108 ++++++++
 .../golden/ltl_pertask/ltl_pertask_trace.h    |  14 +
 .../rvgen/tests/golden/test_container/Kconfig |   5 +
 .../golden/test_container/test_container.c    |  35 +++
 .../golden/test_container/test_container.h    |   3 +
 .../rvgen/tests/golden/test_da/Kconfig        |   9 +
 .../rvgen/tests/golden/test_da/test_da.c      |  95 +++++++
 .../rvgen/tests/golden/test_da/test_da.h      |  47 ++++
 .../tests/golden/test_da/test_da_trace.h      |  15 ++
 .../rvgen/tests/golden/test_ha/Kconfig        |   9 +
 .../rvgen/tests/golden/test_ha/test_ha.c      | 247 ++++++++++++++++++
 .../rvgen/tests/golden/test_ha/test_ha.h      |  72 +++++
 .../tests/golden/test_ha/test_ha_trace.h      |  19 ++
 .../rvgen/tests/golden/test_ltl/Kconfig       |  11 +
 .../rvgen/tests/golden/test_ltl/test_ltl.c    | 108 ++++++++
 .../rvgen/tests/golden/test_ltl/test_ltl.h    | 108 ++++++++
 .../tests/golden/test_ltl/test_ltl_trace.h    |  14 +
 .../rvgen/tests/rvgen_container.t             |  20 ++
 .../verification/rvgen/tests/rvgen_monitor.t  |  87 ++++++
 .../rvgen/tests/specs/test_da.dot             |  16 ++
 .../rvgen/tests/specs/test_da2.dot            |  19 ++
 .../rvgen/tests/specs/test_ha.dot             |  27 ++
 .../rvgen/tests/specs/test_invalid.dot        |   8 +
 .../rvgen/tests/specs/test_invalid.ltl        |   1 +
 .../rvgen/tests/specs/test_invalid_ha.dot     |  16 ++
 .../rvgen/tests/specs/test_ltl.ltl            |   1 +
 tools/verification/tests/engine.sh            | 166 ++++++++++++
 69 files changed, 3075 insertions(+), 49 deletions(-)
 create mode 100644 include/rv/kunit.h
 create mode 100644 kernel/trace/rv/rv_monitors_test.c
 create mode 100644 tools/verification/rv/tests/rv_list.t
 create mode 100644 tools/verification/rv/tests/rv_mon.t
 create mode 100644 tools/verification/rvgen/tests/golden/da_global/Kconfig
 create mode 100644 tools/verification/rvgen/tests/golden/da_global/da_global.c
 create mode 100644 tools/verification/rvgen/tests/golden/da_global/da_global.h
 create mode 100644 tools/verification/rvgen/tests/golden/da_global/da_global_trace.h
 create mode 100644 tools/verification/rvgen/tests/golden/da_perobj_parent/Kconfig
 create mode 100644 tools/verification/rvgen/tests/golden/da_perobj_parent/da_perobj_parent.c
 create mode 100644 tools/verification/rvgen/tests/golden/da_perobj_parent/da_perobj_parent.h
 create mode 100644 tools/verification/rvgen/tests/golden/da_perobj_parent/da_perobj_parent_trace.h
 create mode 100644 tools/verification/rvgen/tests/golden/da_pertask_desc/Kconfig
 create mode 100644 tools/verification/rvgen/tests/golden/da_pertask_desc/da_pertask_desc.c
 create mode 100644 tools/verification/rvgen/tests/golden/da_pertask_desc/da_pertask_desc.h
 create mode 100644 tools/verification/rvgen/tests/golden/da_pertask_desc/da_pertask_desc_trace.h
 create mode 100644 tools/verification/rvgen/tests/golden/ha_percpu/Kconfig
 create mode 100644 tools/verification/rvgen/tests/golden/ha_percpu/ha_percpu.c
 create mode 100644 tools/verification/rvgen/tests/golden/ha_percpu/ha_percpu.h
 create mode 100644 tools/verification/rvgen/tests/golden/ha_percpu/ha_percpu_trace.h
 create mode 100644 tools/verification/rvgen/tests/golden/ltl_pertask/Kconfig
 create mode 100644 tools/verification/rvgen/tests/golden/ltl_pertask/ltl_pertask.c
 create mode 100644 tools/verification/rvgen/tests/golden/ltl_pertask/ltl_pertask.h
 create mode 100644 tools/verification/rvgen/tests/golden/ltl_pertask/ltl_pertask_trace.h
 create mode 100644 tools/verification/rvgen/tests/golden/test_container/Kconfig
 create mode 100644 tools/verification/rvgen/tests/golden/test_container/test_container.c
 create mode 100644 tools/verification/rvgen/tests/golden/test_container/test_container.h
 create mode 100644 tools/verification/rvgen/tests/golden/test_da/Kconfig
 create mode 100644 tools/verification/rvgen/tests/golden/test_da/test_da.c
 create mode 100644 tools/verification/rvgen/tests/golden/test_da/test_da.h
 create mode 100644 tools/verification/rvgen/tests/golden/test_da/test_da_trace.h
 create mode 100644 tools/verification/rvgen/tests/golden/test_ha/Kconfig
 create mode 100644 tools/verification/rvgen/tests/golden/test_ha/test_ha.c
 create mode 100644 tools/verification/rvgen/tests/golden/test_ha/test_ha.h
 create mode 100644 tools/verification/rvgen/tests/golden/test_ha/test_ha_trace.h
 create mode 100644 tools/verification/rvgen/tests/golden/test_ltl/Kconfig
 create mode 100644 tools/verification/rvgen/tests/golden/test_ltl/test_ltl.c
 create mode 100644 tools/verification/rvgen/tests/golden/test_ltl/test_ltl.h
 create mode 100644 tools/verification/rvgen/tests/golden/test_ltl/test_ltl_trace.h
 create mode 100644 tools/verification/rvgen/tests/rvgen_container.t
 create mode 100644 tools/verification/rvgen/tests/rvgen_monitor.t
 create mode 100644 tools/verification/rvgen/tests/specs/test_da.dot
 create mode 100644 tools/verification/rvgen/tests/specs/test_da2.dot
 create mode 100644 tools/verification/rvgen/tests/specs/test_ha.dot
 create mode 100644 tools/verification/rvgen/tests/specs/test_invalid.dot
 create mode 100644 tools/verification/rvgen/tests/specs/test_invalid.ltl
 create mode 100644 tools/verification/rvgen/tests/specs/test_invalid_ha.dot
 create mode 100644 tools/verification/rvgen/tests/specs/test_ltl.ltl
 create mode 100644 tools/verification/tests/engine.sh


base-commit: e1914add2799225a87502051415fc5c32aeb02ae
-- 
2.54.0