[PATCH v1 0/2] tests/amdgpu: Add shared lockdep checks for reset tests

[<vitaly.prosyak@amd.com>]

From: Vitaly Prosyak <vitaly.prosyak@amd.com>

This series extends the existing amdgpu lockdep validation coverage by
moving the common /dev/kmsg and kernel taint checking logic out of
amd_lockdep and into shared amdgpu helpers, then using those helpers in
additional reset-oriented tests.

Patch 1 is a refactor only and makes no functional change to
amd_lockdep. The test still requires CONFIG_LOCKDEP through
/proc/lockdep_stats, opens /dev/kmsg at the start of each
lockdep-sensitive subtest, records the starting taint state, and fails
if a lockdep splat or new TAINT_WARN appears. The helper move keeps that
logic in one place so other amdgpu tests can use the same behavior
without duplicating the plumbing.

Patch 2 enables the shared optional lockdep checks in amd_dispatch,
amd_deadlock, and amd_queue_reset. These tests mostly exercise queue
reset and GPU reset paths, including user queue coverage, so they are a
useful place to catch lockdep issues while reset and recovery paths are
being stressed.

Unlike amd_lockdep, these tests are not dedicated lockdep tests and must
continue to run on kernels without CONFIG_LOCKDEP. The new begin/end
helper checks /proc/lockdep_stats first; when lockdep is unavailable the
check is a no-op, and when lockdep is available each subtest fails if new
lockdep traces or TAINT_WARN are observed.

Vitaly Prosyak (2):
  lib/amdgpu: Add shared lockdep violation helpers
  tests/amdgpu: Check lockdep violations in reset tests

 lib/amdgpu/amd_utils.c         | 100 ++++++++++++++++++++++++++++++
 lib/amdgpu/amd_utils.h         |  14 +++++
 tests/amdgpu/amd_deadlock.c    |  45 ++++++++++++++
 tests/amdgpu/amd_dispatch.c    |  25 ++++++++
 tests/amdgpu/amd_lockdep.c     | 110 ++++-----------------------------
 tests/amdgpu/amd_queue_reset.c |   3 +
 6 files changed, 199 insertions(+), 98 deletions(-)

-- 
2.55.0