发布时间：2019-06-18 13:08:39
kernel/include$ vim linux/kdev_t.h#define MINORBITS 20#define MINORMASK ((1U << MINORBITS) - 1)#define MAJOR(dev) ((unsigned int) ((dev) >> MINORBITS)) #define MINOR(dev) ((unsigned int) ((dev) & MINORMASK))#define MKDEV(ma,mi) (((ma) << M.........【阅读全文】
