Check the flow of requests into the hardware to verify that are submitted in order along their timeline.
Signed-off-by: Chris Wilson <[email protected]> --- drivers/gpu/drm/i915/gt/intel_lrc.c | 4 ++++ drivers/gpu/drm/i915/i915_request.c | 4 ++++ 2 files changed, 8 insertions(+) diff --git a/drivers/gpu/drm/i915/gt/intel_lrc.c b/drivers/gpu/drm/i915/gt/intel_lrc.c index 16a023ac4604..13941d1c0a4a 100644 --- a/drivers/gpu/drm/i915/gt/intel_lrc.c +++ b/drivers/gpu/drm/i915/gt/intel_lrc.c @@ -1622,6 +1622,7 @@ static bool can_merge_rq(const struct i915_request *prev, if (!can_merge_ctx(prev->context, next->context)) return false; + GEM_BUG_ON(i915_seqno_passed(prev->fence.seqno, next->fence.seqno)); return true; } @@ -2142,6 +2143,9 @@ static void execlists_dequeue(struct intel_engine_cs *engine) GEM_BUG_ON(last && !can_merge_ctx(last->context, rq->context)); + GEM_BUG_ON(last && + i915_seqno_passed(last->fence.seqno, + rq->fence.seqno)); submit = true; last = rq; diff --git a/drivers/gpu/drm/i915/i915_request.c b/drivers/gpu/drm/i915/i915_request.c index ca5361eb1f0b..35147df79655 100644 --- a/drivers/gpu/drm/i915/i915_request.c +++ b/drivers/gpu/drm/i915/i915_request.c @@ -737,6 +737,7 @@ __i915_request_create(struct intel_context *ce, gfp_t gfp) RCU_INIT_POINTER(rq->timeline, tl); RCU_INIT_POINTER(rq->hwsp_cacheline, tl->hwsp_cacheline); rq->hwsp_seqno = tl->hwsp_seqno; + GEM_BUG_ON(i915_request_completed(rq)); rq->rcustate = get_state_synchronize_rcu(); /* acts as smp_mb() */ @@ -1284,6 +1285,9 @@ __i915_request_add_to_timeline(struct i915_request *rq) prev = to_request(__i915_active_fence_set(&timeline->last_request, &rq->fence)); if (prev && !i915_request_completed(prev)) { + GEM_BUG_ON(i915_seqno_passed(prev->fence.seqno, + rq->fence.seqno)); + if (is_power_of_2(prev->engine->mask | rq->engine->mask)) i915_sw_fence_await_sw_fence(&rq->submit, &prev->submit, -- 2.25.1 _______________________________________________ Intel-gfx mailing list [email protected] https://lists.freedesktop.org/mailman/listinfo/intel-gfx
