1 list_for_each_entry(pos, head, member)
函数功能：遍历链表，查找指定类型
参数定义：pos-循环游标；head-链表头节点；member-头节点在结构体中的名称
返回结果：
/** * list_for_each_entry - iterate over list of given type * @pos: the type * to use as a loop cursor. * @head: the head for your list. * @member: the name of the list_head within the struct. */ #define list_for_each_entry(pos, head, member) \ for (pos = list_first_entry(head, typeof(*pos), member); \ &pos->member != (head); \ pos = list_next_entry(pos, member))2 list_for_each_entry_safe
函数功能：
参数定义：
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3 list_first_entry(ptr, type, member)
函数功能：
参数定义：ptr-结构体头指针；type-结构体类型；name-在结构体中的名称
返回结果：
/** * list_entry - get the struct for this entry * @ptr: the &struct list_head pointer. * @type: the type of the struct this is embedded in. * @member: the name of the list_head within the struct. */ #define list_entry(ptr, type, member) container_of(ptr, type, member) /** * container_of - cast a member of a structure out to the containing structure * @ptr: the pointer to the member. * @type: the type of the container struct this is embedded in. * @member: the name of the member within the struct. * */ #define container_of(ptr, type, member) ({ \ const typeof( ((type *)0)->member ) *__mptr = (ptr); \ (type *)( (char *)__mptr - offsetof(type,member) );})4 list_add_tail
函数功能：在链表中加入一个新条目
参数定义：new-待添加条目；head-接受新条目的链表头节点
static inline void list_add_tail(struct list_head *new, struct list_head *head) { __list_add(new, head->prev, head); } /* * Insert a new entry between two known consecutive entries. * * This is only for internal list manipulation where we know * the prev/next entries already! */ #ifndef CONFIG_DEBUG_LIST static inline void __list_add(struct list_head *new, struct list_head *prev, struct list_head *next) { next->prev = new; new->next = next; new->prev = prev; prev->next = new; } #else extern void __list_add(struct list_head *new, struct list_head *prev, struct list_head *next); #endif
