Linux驱动开发杂记(0x16) - 内核定时器接口各版本的变化

2.6.13 - 2.6.14

添加

#define DEFINE_TIMER(_name, _function, _expires, _data)

## 2.6.14 - 2.6.15 添加

static inline void setup_timer(struct timer_list * timer,
                              void (*function)(unsigned long),
                               unsigned long data)

## 3.6 - 3.7

void init_timer_key(struct timer_list *timer,
                   const char *name,
                   struct lock_class_key *key);
// 改为
void init_timer_key(struct timer_list *timer, unsigned int flags,
                   const char *name, struct lock_class_key *key);

删除setup_timer_key

4.1 - 4.2

修改

struct timer_list {
	......
	struct tvec_base *base;

	void (*function)(unsigned long);
	unsigned long data;

	int slack;
	......
};
//改为
struct timer_list {
	......
	void			(*function)(unsigned long);
	unsigned long		data;
	u32			flags;
	int			slack;
	......
};

## 4.7 - 4.8 1. 删除struct timer_list {}中的

int			slack;

2. 添加TIMER_PINNED_INITIALIZER 3. 添加init_timer_pinned ## 4.13 - 4.14 添加

static inline void timer_setup(struct timer_list *timer,
			       void (*callback)(struct timer_list *),
			       unsigned int flags)

from_timer(var, callback_timer, timer_fieldname)

## 4.14 - 4.15 修改

struct timer_list {
	......
	void			(*function)(unsigned long);
	unsigned long		data;
	u32			flags;
	......
};
//改为
struct timer_list {
	......
	void			(*function)(struct timer_list *);
	u32			flags;
	......
};

#define DEFINE_TIMER(_name, _function, _expires, _data)
//改为
#define DEFINE_TIMER(_name, _function) 

1. 去除setup_timer函数，改为timer_setup(timer, callback, flags) 2. 去除init_timer函数

void init_timer_key(struct timer_list *timer, unsigned int flags,
		    const char *name, struct lock_class_key *key);
// 改为
void init_timer_key(struct timer_list *timer,
	  void (*func)(struct timer_list *), unsigned int flags,
	  const char *name, struct lock_class_key *key);