在linux-2.6.30版本中tty_flip.h
extern int tty_buffer_request_room(struct tty_struct *tty, size_t size);
extern int tty_insert_flip_string_flags(struct tty_struct *tty, const unsigned char *chars, const char *flags, size_t size);
extern int tty_insert_flip_string_fixed_flag(struct tty_struct *tty, const unsigned char *chars, char flag, size_t size);
extern int tty_prepare_flip_string(struct tty_struct *tty, unsigned char **chars, size_t size);
extern int tty_prepare_flip_string_flags(struct tty_struct *tty, unsigned char **chars, char **flags, size_t size);
void tty_schedule_flip(struct tty_struct *tty);
static inline int tty_insert_flip_char(struct tty_struct *tty,
     unsigned char ch, char flag)
{
 struct tty_buffer *tb = tty->buf.tail;
 if (tb && tb->used < tb->size) {
  tb->flag_buf_ptr[tb->used] = flag;
  tb->char_buf_ptr[tb->used++] = ch;
  return 1;
 }
 return tty_insert_flip_string_flags(tty, &ch, &flag, 1);
}
static inline int tty_insert_flip_string(struct tty_struct *tty, const unsigned char *chars, size_t size)
{
 return tty_insert_flip_string_fixed_flag(tty, chars, TTY_NORMAL, size);
}
在linux-2.6.14版本中tty_flip.h文件
#ifndef _LINUX_TTY_FLIP_H
#define _LINUX_TTY_FLIP_H
#ifdef INCLUDE_INLINE_FUNCS
#define _INLINE_ extern
#else
#define _INLINE_ static __inline__
#endif
_INLINE_ void tty_insert_flip_char(struct tty_struct *tty,
       unsigned char ch, char flag)
{
 if (tty->flip.count < TTY_FLIPBUF_SIZE) {
  tty->flip.count++;
  *tty->flip.flag_buf_ptr++ = flag;
  *tty->flip.char_buf_ptr++ = ch;
 }
}
_INLINE_ void tty_schedule_flip(struct tty_struct *tty)
{
 schedule_delayed_work(&tty->flip.work, 1);
}
目前的tty驱动从linux-2.6.30版本移植到linux-2.6.14版本,里面需要用到tty_insert_flip_string这个接口,但是这个接口调用了如下的接口
tty_insert_flip_string_fixed_flag
tty_buffer_request_room
tty_buffer_find
这些接口在2.6.14中都没有想把tty_insert_flip_string移植到2.6.14版本的内核中,请问各位高手,需要怎么做?
谢谢!