基于S3C2440班子的linux字符型驱动课件源程序，包括内核空间与用户空间数据拷贝，自旋锁与信号量，proc文件系统等试验源码-Based on the source of the the S3C2440 team linux character-driven courseware, including the kernel space and user space data copy, spin locks and semaphores, proc file system test sou