adstraw commented on code in PR #12411:
URL: https://github.com/apache/tvm/pull/12411#discussion_r954407081
##########
src/runtime/hexagon/hexagon_user_dma.cc:
##########
@@ -82,12 +95,13 @@ int HexagonUserDMA::Copy(void* dst, void* src, uint32_t
length) {
dmstart(dma_desc);
first_dma_ = false;
} else {
- // `dmlink` descriptor to tail
- dmlink(dma_descriptors_.back(), dma_desc);
+ // `dmlink` descriptor to tail descriptor
+ void* tail = GetDescriptorAddr(id_next_dma_desc_ - 1);
+ dmlink(tail, dma_desc);
}
- // set descriptor as new tail
- dma_descriptors_.push_back(dma_desc);
+ // update the ID of the next DMA descriptor
+ id_next_dma_desc_++;
Review Comment:
Added new RingBuffer class along with testing.
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