P4 to Git Change 1095130 by xcui@merged_opencl_jxcwin on 2014/11/07 18:09:55

EPR #408459 - changed the implementation of svmAlloc, so that the first device can create amd::Memory object, and the rest of devices only added gpu memory to it. This is part of changes for mgpu support for svmalloc
	code review:
	http://ocltc.amd.com/reviews/r/6245/
	precheckin testing results:
	http://ocltc.amd.com:8111/viewModification.html?modId=43136&personal=true&buildTypeId=&tab=vcsModificationTests

Affected files ...

... //depot/stg/opencl/drivers/opencl/runtime/device/cpu/cpudevice.hpp#88 edit
... //depot/stg/opencl/drivers/opencl/runtime/device/device.hpp#233 edit
... //depot/stg/opencl/drivers/opencl/runtime/device/gpu/gpudevice.cpp#479 edit
... //depot/stg/opencl/drivers/opencl/runtime/device/gpu/gpudevice.hpp#133 edit
... //depot/stg/opencl/drivers/opencl/runtime/device/hsa/hsadevice.cpp#87 edit
... //depot/stg/opencl/drivers/opencl/runtime/device/hsa/hsadevice.hpp#44 edit
... //depot/stg/opencl/drivers/opencl/runtime/device/hsa_foundation/hsadevice.cpp#19 edit
... //depot/stg/opencl/drivers/opencl/runtime/device/hsa_foundation/hsadevice.hpp#6 edit
... //depot/stg/opencl/drivers/opencl/runtime/platform/context.cpp#34 edit

rocclr/runtime/platform/context.cpp

@@ -307,11 +307,8 @@ Context::svmAlloc(size_t size, size_t alignment, cl_svm_mem_flags flags)
 
         for (const auto& dev : svmAllocDevice_) {
             if (dev->type() == CL_DEVICE_TYPE_GPU) {
-                tempPtr = dev->svmAlloc(*this, size, alignment, flags);
-                if (dev == svmAllocDevice_.front()) {
-                    svmPtrAlloced = tempPtr;
-                }
-                if ((svmPtrAlloced != tempPtr) || (NULL == tempPtr)) {
+                svmPtrAlloced = dev->svmAlloc(*this, size, alignment, flags, svmPtrAlloced);
+                if (svmPtrAlloced == NULL) {
                     return NULL;
                 }
             }