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