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电子工程专辑
3 年
LINUX网络子系统中DMA机制的实现
我们先从计算机组成原理的层面介绍DMA,再简单介绍Linux网络子系统的DMA机制是如何的实现的。 一、计算机组成原理中的DMA 以往的I/O设备和主存交换信息都要经过CPU的操作。不论是最早的轮询方式,还是我们学过的中断方式。虽然中断方式相比轮询方式已经节省 ...
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