android13/kernel-5.10/drivers/dma-buf/heaps/Kconfig

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menuconfig DMABUF_HEAPS_DEFERRED_FREE
bool "DMA-BUF heaps deferred-free library"
help
Choose this option to enable the DMA-BUF heaps deferred-free library.
menuconfig DMABUF_HEAPS_PAGE_POOL
bool "DMA-BUF heaps page-pool library"
help
Choose this option to enable the DMA-BUF heaps page-pool library.
config DMABUF_HEAPS_SYSTEM
tristate "DMA-BUF System Heap"
depends on DMABUF_HEAPS && DMABUF_HEAPS_DEFERRED_FREE && DMABUF_HEAPS_PAGE_POOL
help
Choose this option to enable the system dmabuf heap. The system heap
is backed by pages from the buddy allocator. If in doubt, say Y.
config DMABUF_HEAPS_CMA
tristate "DMA-BUF CMA Heap"
depends on DMABUF_HEAPS && DMA_CMA
help
Choose this option to enable dma-buf CMA heap. This heap is backed
by the Contiguous Memory Allocator (CMA). If your system has these
regions, you should say Y here.
config DMABUF_HEAPS_SRAM
tristate "Export on-chip SRAM pools using DMA-Heaps"
depends on DMABUF_HEAPS && SRAM
help
This driver allows the export of on-chip SRAM marked as exportable
to userspace using the DMA-Heaps interface.