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

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

Maxime Ripard posted 4 patches 10 months, 1 week 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 10 months, 1 week 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>

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

Posted by Maxime Ripard 10 months ago

On Thu, 03 Apr 2025 15:33:29 +0200, Maxime Ripard wrote:
> 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
> 
> [...]

Applied to misc/kernel.git (drm-misc-next).

Thanks!
Maxime