Some i915 selftests still use i915_vma_lock() as inner lock, and intel_context_create_request() intel_timeline->mutex as outer lock. Fortunately for selftests this is not an issue, they should be fixed but we can move ahead and cleanify lockdep now. Signed-off-by: Maarten Lankhorst <maarten.lankhorst@xxxxxxxxxxxxxxx> --- drivers/gpu/drm/i915/gt/intel_context.c | 12 ++++++++++++ 1 file changed, 12 insertions(+) diff --git a/drivers/gpu/drm/i915/gt/intel_context.c b/drivers/gpu/drm/i915/gt/intel_context.c index 64948386630f..fe9fff5a63b1 100644 --- a/drivers/gpu/drm/i915/gt/intel_context.c +++ b/drivers/gpu/drm/i915/gt/intel_context.c @@ -459,6 +459,18 @@ struct i915_request *intel_context_create_request(struct intel_context *ce) rq = i915_request_create(ce); intel_context_unpin(ce); + if (IS_ERR(rq)) + return rq; + + /* + * timeline->mutex should be the inner lock, but is used as outer lock. + * Hack around this to shut up lockdep in selftests.. + */ + lockdep_unpin_lock(&ce->timeline->mutex, rq->cookie); + mutex_release(&ce->timeline->mutex.dep_map, _RET_IP_); + mutex_acquire(&ce->timeline->mutex.dep_map, SINGLE_DEPTH_NESTING, 0, _RET_IP_); + rq->cookie = lockdep_pin_lock(&ce->timeline->mutex); + return rq; } -- 2.26.1 _______________________________________________ Intel-gfx mailing list Intel-gfx@xxxxxxxxxxxxxxxxxxxxx https://lists.freedesktop.org/mailman/listinfo/intel-gfx
