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tty: Move tty_write_message out of kernel/printk

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This is pure tty code so put it in the tty layer where it can be with the
locking relevant material it uses

Signed-off-by: Alan Cox <alan@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Alan Cox 2008-10-13 10:39:23 +01:00 committed by Linus Torvalds
parent 452a00d2ee
commit 95f9bfc6b7
2 changed files with 25 additions and 16 deletions
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25
drivers/char/tty_io.c
View file

@ -1081,6 +1081,31 @@ static inline ssize_t do_tty_write(
return ret;
}
/**
* tty_write_message - write a message to a certain tty, not just the console.
* @tty: the destination tty_struct
* @msg: the message to write
*
* This is used for messages that need to be redirected to a specific tty.
* We don't put it into the syslog queue right now maybe in the future if
* really needed.
*
* We must still hold the BKL and test the CLOSING flag for the moment.
*/
void tty_write_message(struct tty_struct *tty, char *msg)
{
lock_kernel();
if (tty) {
mutex_lock(&tty->atomic_write_lock);
if (tty->ops->write && !test_bit(TTY_CLOSING, &tty->flags))
tty->ops->write(tty, msg, strlen(msg));
tty_write_unlock(tty);
}
unlock_kernel();
return;
}
/**
* tty_write - write method for tty device file

16
kernel/printk.c
View file

@ -1291,22 +1291,6 @@ static int __init disable_boot_consoles(void)
}
late_initcall(disable_boot_consoles);
/**
* tty_write_message - write a message to a certain tty, not just the console.
* @tty: the destination tty_struct
* @msg: the message to write
*
* This is used for messages that need to be redirected to a specific tty.
* We don't put it into the syslog queue right now maybe in the future if
* really needed.
*/
void tty_write_message(struct tty_struct *tty, char *msg)
{
if (tty && tty->ops->write)
tty->ops->write(tty, msg, strlen(msg));
return;
}
#if defined CONFIG_PRINTK
/*