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Subject: [PATCH 00/10] drm: selftest: Convert to KUnit
Date:   Wed, 15 Jun 2022 10:58:14 -0300
Message-Id: <20220615135824.15522-1-maira.canal@usp.br>
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KUnit unifies the test structure and provides helper tools that simplify
the development of tests. The basic use case allows running tests as regular
processes, which makes it easier to run unit tests on a development machine
and to integrate the tests into a CI system.

That said, the conversion of selftests for DRM to KUnit tests is beneficial
as it unifies the testing API by using the KUnit API.

KUnit is beneficial for developers as it eases the process to run unit tests.
It is possible to run the tests by using the kunit-tool on userspace with the
following command:

./tools/testing/kunit/kunit.py run --kunitconfig=drivers/gpu/drm/tests --arch=x86_64

For CI system, it is possible to execute during the build. But, we also think
about IGT: we are developing a patch to introduce KUnit to IGT.

These patches were developed during a KUnit hackathon [0] last October. Now,
we believe that both the IGT side and the Kernel side are in good shape for
submission.

If you are willing to check the output, here is the Pastebin with the output
and execution times [1].

[0] https://groups.google.com/g/kunit-dev/c/YqFR1q2uZvk/m/IbvItSfHBAAJ
[1] https://pastebin.com/FJjLPKsC

- Arthur Grillo, Isabella Basso, and Maíra Canal

Arthur Grillo (2):
  drm: selftest: refactor drm_cmdline_parser
  drm: selftest: convert drm_mm selftest to KUnit

Maíra Canal (8):
  drm: selftest: convert drm_damage_helper selftest to KUnit
  drm: selftest: convert drm_cmdline_parser selftest to KUnit
  drm: selftest: convert drm_rect selftest to KUnit
  drm: selftest: convert drm_format selftest to KUnit
  drm: selftest: convert drm_plane_helper selftest to KUnit
  drm: selftest: convert drm_dp_mst_helper selftest to KUnit
  drm: selftest: convert drm_framebuffer selftest to KUnit
  drm: selftest: convert drm_buddy selftest to KUnit

 drivers/gpu/drm/Kconfig                       |   20 +-
 drivers/gpu/drm/Makefile                      |    2 +-
 drivers/gpu/drm/selftests/Makefile            |    8 -
 .../gpu/drm/selftests/drm_buddy_selftests.h   |   15 -
 .../gpu/drm/selftests/drm_cmdline_selftests.h |   68 -
 drivers/gpu/drm/selftests/drm_mm_selftests.h  |   28 -
 .../gpu/drm/selftests/drm_modeset_selftests.h |   40 -
 drivers/gpu/drm/selftests/drm_selftest.c      |  109 --
 drivers/gpu/drm/selftests/drm_selftest.h      |   41 -
 drivers/gpu/drm/selftests/test-drm_buddy.c    |  994 --------------
 .../drm/selftests/test-drm_cmdline_parser.c   | 1141 -----------------
 .../drm/selftests/test-drm_damage_helper.c    |  667 ----------
 drivers/gpu/drm/selftests/test-drm_format.c   |  280 ----
 .../drm/selftests/test-drm_modeset_common.c   |   32 -
 .../drm/selftests/test-drm_modeset_common.h   |   52 -
 drivers/gpu/drm/tests/.kunitconfig            |    3 +
 drivers/gpu/drm/tests/Kconfig                 |  130 ++
 drivers/gpu/drm/tests/Makefile                |   10 +
 drivers/gpu/drm/tests/test-drm_buddy.c        |  748 +++++++++++
 .../gpu/drm/tests/test-drm_cmdline_parser.c   |  799 ++++++++++++
 .../gpu/drm/tests/test-drm_damage_helper.c    |  633 +++++++++
 .../test-drm_dp_mst_helper.c                  |   82 +-
 drivers/gpu/drm/tests/test-drm_format.c       |  284 ++++
 .../test-drm_framebuffer.c                    |   25 +-
 .../drm/{selftests => tests}/test-drm_mm.c    | 1135 +++++++---------
 .../test-drm_plane_helper.c                   |  101 +-
 .../drm/{selftests => tests}/test-drm_rect.c  |  124 +-
 27 files changed, 3240 insertions(+), 4331 deletions(-)
 delete mode 100644 drivers/gpu/drm/selftests/Makefile
 delete mode 100644 drivers/gpu/drm/selftests/drm_buddy_selftests.h
 delete mode 100644 drivers/gpu/drm/selftests/drm_cmdline_selftests.h
 delete mode 100644 drivers/gpu/drm/selftests/drm_mm_selftests.h
 delete mode 100644 drivers/gpu/drm/selftests/drm_modeset_selftests.h
 delete mode 100644 drivers/gpu/drm/selftests/drm_selftest.c
 delete mode 100644 drivers/gpu/drm/selftests/drm_selftest.h
 delete mode 100644 drivers/gpu/drm/selftests/test-drm_buddy.c
 delete mode 100644 drivers/gpu/drm/selftests/test-drm_cmdline_parser.c
 delete mode 100644 drivers/gpu/drm/selftests/test-drm_damage_helper.c
 delete mode 100644 drivers/gpu/drm/selftests/test-drm_format.c
 delete mode 100644 drivers/gpu/drm/selftests/test-drm_modeset_common.c
 delete mode 100644 drivers/gpu/drm/selftests/test-drm_modeset_common.h
 create mode 100644 drivers/gpu/drm/tests/.kunitconfig
 create mode 100644 drivers/gpu/drm/tests/Kconfig
 create mode 100644 drivers/gpu/drm/tests/Makefile
 create mode 100644 drivers/gpu/drm/tests/test-drm_buddy.c
 create mode 100644 drivers/gpu/drm/tests/test-drm_cmdline_parser.c
 create mode 100644 drivers/gpu/drm/tests/test-drm_damage_helper.c
 rename drivers/gpu/drm/{selftests => tests}/test-drm_dp_mst_helper.c (73%)
 create mode 100644 drivers/gpu/drm/tests/test-drm_format.c
 rename drivers/gpu/drm/{selftests => tests}/test-drm_framebuffer.c (96%)
 rename drivers/gpu/drm/{selftests => tests}/test-drm_mm.c (58%)
 rename drivers/gpu/drm/{selftests => tests}/test-drm_plane_helper.c (62%)
 rename drivers/gpu/drm/{selftests => tests}/test-drm_rect.c (53%)

-- 
2.36.1