2017 年引入动态大小核技术。

1. driver not loaded 原因总结MinGW编译器中找不到 MySql驱动或者驱动位数不对MinGW编译器找不到 MySql动态库或者动态库有问题代码写的有问题https://blog.csdn.net/l0p0c/article/details/865437602. 编译Qt MySql驱动2.1 参考https://www.bilibili.com/video/BV1Jk4y1

7.15 Linux内核的面向对象思想：封装（上）字符设备./fs/char_dev.c 用到了include/linux/cdev.hstruct cdev {struct kobject kobj;struct module *owner;const struct file_operations *ops;struct list_head list;dev_t dev;unsigned i