In-Depth Analysis of DMA-BUF: Zero-Copy Buffer Sharing Architecture in the Linux Kernel
Introduction: Why is DMA-BUF Needed? In modern heterogeneous computing systems, multiple processing units (CPU, GPU, ISP, video codecs, etc.) need to share data efficiently. Traditional data sharing methods involve frequent memory copies, which can incur significant performance overhead in scenarios such as high-resolution video processing and complex graphics rendering. DMA-BUF was developed to provide a … Read more