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[UR][Offload] Implement stub functions for mem advise/prefetch #19937

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Merged
merged 1 commit into from
Sep 2, 2025
Merged

[UR][Offload] Implement stub functions for mem advise/prefetch #19937

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27 changes: 27 additions & 0 deletions unified-runtime/source/adapters/offload/enqueue.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -442,3 +442,30 @@ UR_APIEXPORT ur_result_t UR_APICALL urEnqueueUSMMemcpy(

return UR_RESULT_SUCCESS;
}

UR_APIEXPORT ur_result_t UR_APICALL urEnqueueUSMAdvise(
ur_queue_handle_t hQueue, [[maybe_unused]] const void *pMem,
[[maybe_unused]] size_t size, [[maybe_unused]] ur_usm_advice_flags_t advice,
ur_event_handle_t *phEvent) {
// Currently not supported - do nothing
if (phEvent) {
*phEvent =
ur_event_handle_t_::createEmptyEvent(UR_COMMAND_USM_ADVISE, hQueue);
}
return UR_RESULT_SUCCESS;
}

UR_APIEXPORT ur_result_t UR_APICALL urEnqueueUSMPrefetch(
ur_queue_handle_t hQueue, [[maybe_unused]] const void *pMem,
[[maybe_unused]] size_t size,
[[maybe_unused]] ur_usm_migration_flags_t flags,
uint32_t numEventsInWaitList, const ur_event_handle_t *phEventWaitList,
ur_event_handle_t *phEvent) {
// Currently not supported - do nothing
ol_queue_handle_t Queue;
OL_RETURN_ON_ERR(hQueue->nextQueue(Queue));
OL_RETURN_ON_ERR(waitOnEvents(Queue, phEventWaitList, numEventsInWaitList));
OL_RETURN_ON_ERR(makeEvent(UR_COMMAND_USM_PREFETCH, Queue, hQueue, phEvent));

return UR_RESULT_SUCCESS;
}
4 changes: 2 additions & 2 deletions unified-runtime/source/adapters/offload/ur_interface_loader.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -187,10 +187,10 @@ UR_DLLEXPORT ur_result_t UR_APICALL urGetEnqueueProcAddrTable(
pDdiTable->pfnMemUnmap = urEnqueueMemUnmap;
pDdiTable->pfnUSMFill2D = urEnqueueUSMFill2D;
pDdiTable->pfnUSMFill = urEnqueueUSMFill;
pDdiTable->pfnUSMAdvise = nullptr;
pDdiTable->pfnUSMAdvise = urEnqueueUSMAdvise;
pDdiTable->pfnUSMMemcpy2D = urEnqueueUSMMemcpy2D;
pDdiTable->pfnUSMMemcpy = urEnqueueUSMMemcpy;
pDdiTable->pfnUSMPrefetch = nullptr;
pDdiTable->pfnUSMPrefetch = urEnqueueUSMPrefetch;
pDdiTable->pfnReadHostPipe = nullptr;
pDdiTable->pfnWriteHostPipe = nullptr;
return UR_RESULT_SUCCESS;
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