基于XEN轻量级虚拟机检查点写时复制的代码，很有参考价值-Copy on write code based on the lightweight virtual machine checkpoint, a good reference value

为了生成轻量级信号量，你可以声明一LWSEM_STRUCT类型的变量并调用_lwsem_create()函数进行初始化，该函数有一指针指向变量并设置了一个初始的信号量计数。该信号量计数表明了并发地访问信号量资源的请求数，并设置为初始值。-In order to generate a lightweight signal, you can initialization function statement LWSEM_STRUCT struct type variables, and call _

ov9650 cmos摄像头Linux驱动源码，处理流程清晰简洁，可作轻量级演示demo.-Linux driver for camera ov9650。