DMA-BUF System Heap

modulename: system_heap.ko


Linux Kernel Configuration
└─>Device Drivers
└─>DMABUF options
└─>DMA-BUF Userland Memory Heaps
└─>DMA-BUF System Heap
In linux kernel since version 5.1 (release Date: 2019-05-05)  
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.

source code: