On 07/12/2018 09:02, Chris Wilson wrote:
Move the common engine->emit_flush(EMIT_INVALIDATE) back to the backends
(where it was once previously) as we seek to specialise it in future
patches.
Signed-off-by: Chris Wilson <chris@xxxxxxxxxxxxxxxxxx>
---
drivers/gpu/drm/i915/i915_request.c | 5 -----
drivers/gpu/drm/i915/intel_lrc.c | 9 ++++++---
drivers/gpu/drm/i915/intel_ringbuffer.c | 6 ++++--
3 files changed, 10 insertions(+), 10 deletions(-)
diff --git a/drivers/gpu/drm/i915/i915_request.c b/drivers/gpu/drm/i915/i915_request.c
index ca95ab2f4cfa..8ab8e8e6a086 100644
--- a/drivers/gpu/drm/i915/i915_request.c
+++ b/drivers/gpu/drm/i915/i915_request.c
@@ -719,11 +719,6 @@ i915_request_alloc(struct intel_engine_cs *engine, struct i915_gem_context *ctx)
*/
rq->head = rq->ring->emit;
- /* Unconditionally invalidate GPU caches and TLBs. */
- ret = engine->emit_flush(rq, EMIT_INVALIDATE);
- if (ret)
- goto err_unwind;
-
ret = engine->request_alloc(rq);
if (ret)
goto err_unwind;
diff --git a/drivers/gpu/drm/i915/intel_lrc.c b/drivers/gpu/drm/i915/intel_lrc.c
index 27d3a780611a..b1f5db3442eb 100644
--- a/drivers/gpu/drm/i915/intel_lrc.c
+++ b/drivers/gpu/drm/i915/intel_lrc.c
@@ -1253,17 +1253,20 @@ static int execlists_request_alloc(struct i915_request *request)
GEM_BUG_ON(!request->hw_context->pin_count);
- /* Flush enough space to reduce the likelihood of waiting after
+ /*
+ * Flush enough space to reduce the likelihood of waiting after
* we start building the request - in which case we will just
* have to repeat work.
*/
request->reserved_space += EXECLISTS_REQUEST_SIZE;
- ret = intel_ring_wait_for_space(request->ring, request->reserved_space);
+ /* Unconditionally invalidate GPU caches and TLBs. */
+ ret = request->engine->emit_flush(request, EMIT_INVALIDATE);
if (ret)
return ret;
- /* Note that after this point, we have committed to using
+ /*
+ * Note that after this point, we have committed to using
* this request as it is being used to both track the
* state of engine initialisation and liveness of the
* golden renderstate above. Think twice before you try
diff --git a/drivers/gpu/drm/i915/intel_ringbuffer.c b/drivers/gpu/drm/i915/intel_ringbuffer.c
index c5eb26a7ee79..16084749adf5 100644
--- a/drivers/gpu/drm/i915/intel_ringbuffer.c
+++ b/drivers/gpu/drm/i915/intel_ringbuffer.c
@@ -1820,13 +1820,15 @@ static int ring_request_alloc(struct i915_request *request)
GEM_BUG_ON(!request->hw_context->pin_count);
- /* Flush enough space to reduce the likelihood of waiting after
+ /*
+ * Flush enough space to reduce the likelihood of waiting after
* we start building the request - in which case we will just
* have to repeat work.
*/
request->reserved_space += LEGACY_REQUEST_SIZE;
- ret = intel_ring_wait_for_space(request->ring, request->reserved_space);
+ /* Unconditionally invalidate GPU caches and TLBs. */
+ ret = request->engine->emit_flush(request, EMIT_INVALIDATE);
if (ret)
return ret;
intel_ring_wait_for_space is the bit paranoid me actually wanted to have
split out. But okay, maybe I did not say it clear enough. This already
helps singling out that change should something unexpected happen.
Reviewed-by: Tvrtko Ursulin <tvrtko.ursulin@xxxxxxxxx>
Regards,
Tvrtko
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