[v2] drm/vc4: tests: Fix locking failures

[PATCH v2 0/4] drm/vc4: tests: Fix locking failures

Maxime Ripard posted 4 patches 21 hours ago

Diff against v1
Download series mbox

drivers/gpu/drm/vc4/tests/vc4_mock_output.c    |  62 ++++++++--
drivers/gpu/drm/vc4/tests/vc4_test_pv_muxing.c | 154 ++++++++++++++++++++++---
2 files changed, 189 insertions(+), 27 deletions(-)

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[PATCH v2 0/4] drm/vc4: tests: Fix locking failures

Posted by Maxime Ripard 21 hours ago

Hi,

This series deals with (lack of) EDEADLK handling in vc4 PV muxing
tests.

This was leading to failures with CONFIG_DEBUG_WW_MUTEX_SLOWPATH
enabled.

Maxime

Signed-off-by: Maxime Ripard <mripard@kernel.org>
---
Changes in v2:
- Fix typo in commit log.
- Enhance the backoff code 
- Link to v1: https://lore.kernel.org/r/20250318-drm-vc4-kunit-failures-v1-0-779864d9ab37@kernel.org

---
Maxime Ripard (4):
      drm/vc4: tests: Use return instead of assert
      drm/vc4: tests: Document output handling functions
      drm/vc4: tests: Stop allocating the state in test init
      drm/vc4: tests: Retry pv-muxing tests when EDEADLK

 drivers/gpu/drm/vc4/tests/vc4_mock_output.c    |  62 ++++++++--
 drivers/gpu/drm/vc4/tests/vc4_test_pv_muxing.c | 154 ++++++++++++++++++++++---
 2 files changed, 189 insertions(+), 27 deletions(-)
---
base-commit: c0988d693eb10e115d95747f8a0cccc83babb3fc
change-id: 20250318-drm-vc4-kunit-failures-313b4775c438

Best regards,
-- 
Maxime Ripard <mripard@kernel.org>