1 #ifndef _LINUX_TTY_FLIP_H 2 #define _LINUX_TTY_FLIP_H 3 4 extern int tty_buffer_request_room(struct tty_struct *tty, size_t size); 5 extern int tty_insert_flip_string(struct tty_struct *tty, const unsigned char *chars, size_t size); 6 extern int tty_insert_flip_string_flags(struct tty_struct *tty, const unsigned char *chars, const char *flags, size_t size); 7 extern int tty_prepare_flip_string(struct tty_struct *tty, unsigned char **chars, size_t size); 8 extern int tty_prepare_flip_string_flags(struct tty_struct *tty, unsigned char **chars, char **flags, size_t size); 9 10 static inline int tty_insert_flip_char(struct tty_struct *tty, 11 unsigned char ch, char flag) 12 { 13 struct tty_buffer *tb = tty->buf.tail; 14 if (tb && tb->active && tb->used < tb->size) { 15 tb->flag_buf_ptr[tb->used] = flag; 16 tb->char_buf_ptr[tb->used++] = ch; 17 return 1; 18 } 19 return tty_insert_flip_string_flags(tty, &ch, &flag, 1); 20 } 21 22 static inline void tty_schedule_flip(struct tty_struct *tty) 23 { 24 unsigned long flags; 25 spin_lock_irqsave(&tty->buf.lock, flags); 26 if (tty->buf.tail != NULL) { 27 tty->buf.tail->active = 0; 28 tty->buf.tail->commit = tty->buf.tail->used; 29 } 30 spin_unlock_irqrestore(&tty->buf.lock, flags); 31 schedule_delayed_work(&tty->buf.work, 1); 32 } 33 34 #undef _INLINE_ 35 36 37 #endif /* _LINUX_TTY_FLIP_H */ 38 39 40 41 42 43 44 45