Commit 95f9bfc6 authored by Alan Cox's avatar Alan Cox Committed by Linus Torvalds

tty: Move tty_write_message out of kernel/printk

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: default avatarAlan Cox <alan@redhat.com>
Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
parent 452a00d2
......@@ -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
......
......@@ -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
/*
......
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