From efe79d48a7debf57ad156a43a9215f8b0c9210d4 Mon Sep 17 00:00:00 2001 From: Chris Wilson Date: Mon, 25 Jun 2018 11:06:04 +0100 Subject: [PATCH] drm/i915: Context objects can never be active when freed Due to how we only release the pining on the context state on retirement and never track activity on the context vma itself, the object can never be active at the point of release. Replace the conditional transfer of ownership onto an active-reference with an assert that the object is idle. Signed-off-by: Chris Wilson Cc: Tvrtko Ursulin Reviewed-by: Tvrtko Ursulin Link: https://patchwork.freedesktop.org/patch/msgid/20180625100604.22598-2-chris@chris-wilson.co.uk --- drivers/gpu/drm/i915/intel_lrc.c | 4 +++- drivers/gpu/drm/i915/intel_ringbuffer.c | 7 +++++-- 2 files changed, 8 insertions(+), 3 deletions(-) diff --git a/drivers/gpu/drm/i915/intel_lrc.c b/drivers/gpu/drm/i915/intel_lrc.c index 8f02053..4657297 100644 --- a/drivers/gpu/drm/i915/intel_lrc.c +++ b/drivers/gpu/drm/i915/intel_lrc.c @@ -1344,7 +1344,9 @@ static void execlists_context_destroy(struct intel_context *ce) return; intel_ring_free(ce->ring); - __i915_gem_object_release_unless_active(ce->state->obj); + + GEM_BUG_ON(i915_gem_object_is_active(ce->state->obj)); + i915_gem_object_put(ce->state->obj); } static void execlists_context_unpin(struct intel_context *ce) diff --git a/drivers/gpu/drm/i915/intel_ringbuffer.c b/drivers/gpu/drm/i915/intel_ringbuffer.c index 4dae238..d248742 100644 --- a/drivers/gpu/drm/i915/intel_ringbuffer.c +++ b/drivers/gpu/drm/i915/intel_ringbuffer.c @@ -1167,8 +1167,11 @@ static void intel_ring_context_destroy(struct intel_context *ce) { GEM_BUG_ON(ce->pin_count); - if (ce->state) - __i915_gem_object_release_unless_active(ce->state->obj); + if (!ce->state) + return; + + GEM_BUG_ON(i915_gem_object_is_active(ce->state->obj)); + i915_gem_object_put(ce->state->obj); } static int __context_pin_ppgtt(struct i915_gem_context *ctx) -- 2.7.4