P4 to Git Change 1973670 by gandryey@gera-win10 on 2019/07/25 11:27:11

SWDEV-79445 - OCL generic changes and code clean-up
	- Don't create an extra queue for DMA transfers when SDMA is disabled. That should allow to avoid useless sync operations.

Affected files ...

... //depot/stg/opencl/drivers/opencl/runtime/device/pal/palconstbuf.cpp#13 edit
... //depot/stg/opencl/drivers/opencl/runtime/device/pal/palgpuopen.cpp#15 edit
... //depot/stg/opencl/drivers/opencl/runtime/device/pal/palresource.cpp#75 edit
... //depot/stg/opencl/drivers/opencl/runtime/device/pal/paltimestamp.cpp#5 edit
... //depot/stg/opencl/drivers/opencl/runtime/device/pal/paltimestamp.hpp#5 edit
... //depot/stg/opencl/drivers/opencl/runtime/device/pal/palvirtual.cpp#143 edit

rocclr/runtime/device/pal/palconstbuf.cpp

@@ -69,8 +69,10 @@ address ManagedBuffer::reserve(uint32_t size, uint64_t* gpu_address) {
     // Get the next buffer in the list
     ++activeBuffer_;
     activeBuffer_ %= MaxNumberOfBuffers;
-    // Make sure the buffer isn't busy
-    gpu().waitForEvent(&pool_[activeBuffer_].events[SdmaEngine]);
+    if (!gpu().dev().settings().disableSdma_) {
+      // Make sure the buffer isn't busy
+      gpu().waitForEvent(&pool_[activeBuffer_].events[SdmaEngine]);
+    }
     gpu().waitForEvent(&pool_[activeBuffer_].events[MainEngine]);
     wrtAddress_ = pool_[activeBuffer_].buf->data();
     wrtOffset_ = 0;