From: Chris Wilson Date: Thu, 27 Feb 2020 20:47:27 +0000 (+0000) Subject: drm/i915/gt: Check engine-is-awake on reset later X-Git-Tag: libata-5.7-2020-04-09~30^2~12^2~179 X-Git-Url: https://git.kernel.dk/?a=commitdiff_plain;h=d3b03d8bf4b82b74f3faeec4115ca648195d6b29;p=linux-2.6-block.git drm/i915/gt: Check engine-is-awake on reset later As we drop the engine-pm on retiring, that may happen while there are still CS events in the buffer. As such we cannot assert the engine is still active on reset, until we know that the current request is still in flight. Closes: https://gitlab.freedesktop.org/drm/intel/issues/1338 Signed-off-by: Chris Wilson Reviewed-by: Andi Shyti Link: https://patchwork.freedesktop.org/patch/msgid/20200227204727.2009346-1-chris@chris-wilson.co.uk --- diff --git a/drivers/gpu/drm/i915/gt/intel_lrc.c b/drivers/gpu/drm/i915/gt/intel_lrc.c index 39b0125b7143..e262571fb00c 100644 --- a/drivers/gpu/drm/i915/gt/intel_lrc.c +++ b/drivers/gpu/drm/i915/gt/intel_lrc.c @@ -3637,9 +3637,6 @@ static void __execlists_reset(struct intel_engine_cs *engine, bool stalled) if (!rq) goto unwind; - /* We still have requests in-flight; the engine should be active */ - GEM_BUG_ON(!intel_engine_pm_is_awake(engine)); - ce = rq->context; GEM_BUG_ON(!i915_vma_is_pinned(ce->state)); @@ -3649,8 +3646,12 @@ static void __execlists_reset(struct intel_engine_cs *engine, bool stalled) goto out_replay; } + /* We still have requests in-flight; the engine should be active */ + GEM_BUG_ON(!intel_engine_pm_is_awake(engine)); + /* Context has requests still in-flight; it should not be idle! */ GEM_BUG_ON(i915_active_is_idle(&ce->active)); + rq = active_request(ce->timeline, rq); head = intel_ring_wrap(ce->ring, rq->head); GEM_BUG_ON(head == ce->ring->tail);