1config DMABUF_HEAPS_SYSTEM 2 bool "DMA-BUF System Heap" 3 depends on DMABUF_HEAPS 4 help 5 Choose this option to enable the system dmabuf heap. The system heap 6 is backed by pages from the buddy allocator. If in doubt, say Y. 7 8config DMABUF_HEAPS_CMA 9 bool "DMA-BUF CMA Heap" 10 depends on DMABUF_HEAPS && DMA_CMA 11 help 12 Choose this option to enable dma-buf CMA heap. This heap is backed 13 by the Contiguous Memory Allocator (CMA). If your system has these 14 regions, you should say Y here. 15 16config DMABUF_HEAPS_CMA_LEGACY 17 bool "Legacy DMA-BUF CMA Heap" 18 default y 19 depends on DMABUF_HEAPS_CMA 20 help 21 Add a duplicate CMA-backed dma-buf heap with legacy naming derived 22 from the CMA area's devicetree node, or "reserved" if the area is not 23 defined in the devicetree. This uses the same underlying allocator as 24 CONFIG_DMABUF_HEAPS_CMA. 25