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/*既然上面分析了，块设备的工作原理。 那如何写一个块设备呢？*//*怎么写一个块设备驱动程序？* 1. 分配一个gendisk结构，用alloc_disk函数* 2. 分配一个request队列，用blk_init_queue函数* 3. 设置gendisk结构* 3.1 设置主设备号，次设备号* 3.2 设置block_device_operations结构* 3.3 设置qu

/*分析 块设备的工作原理*/void ll_rw_block(int rw, int nr, struct buffer_head *bhs[]){ int i; for (i = 0; i < nr; i++) { struct buffer_head *bh = bhs[i]; if (!trylock_buffer(bh)) continue; //写操作

#include struct list_head{ struct list_head *next; struct list_head *prev;};struct score{ int num; int math; struct list_head list; };#define list_for_each(pos, head) \ for (pos = (he

#include #include #include typedef char D_Char;typedef int D_Int;typedef struct _D_List D_List;struct _D_List{ D_List *prev; D_List *next;};typedef struct{ D_List list; D_Char name

#include #include #include typedef unsigned char D_U8;typedef unsigned short D_U16;typedef unsigned int D_U32;typedef struct _D_List D_List;struct _D_List{ D_List *prev; D_List *next;}

#include #include #include typedef unsigned char D_U8;typedef unsigned short D_U16;typedef unsigned int D_U32;typedef struct _D_List D_List;struct _D_List{ D_List *prev; D_List *next;}

#include #include #include typedef char D_Char;typedef int D_Int;typedef struct _D_List D_List;struct _D_List{ D_List *prev; D_List *next;};typedef struct{ D_List list; D_Char name

#include #include #include typedef char D_Char;typedef int D_Int;typedef struct _D_List D_List;struct _D_List{ D_List *prev; D_List *next;};typedef struct{ D_List list; D_Char name

原文地址： http://www.tuicool.com/articles/ryIFFrJ1.功能作用 rtcwake是利用电脑主板上带的rtc来作为定时基准，在给定的时间唤醒处于待机或休眠状态的电脑。 2.位置 /usr/sbin/rtcwake 3.格式用法 rtcwake[options] 4.主要参数-d, –device     select rtc