Re: Printk output on console

[Luca Falavigna <dktrkranz@gmail.com>]

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Hi Selvakumar,
| While the
|> kernel is in execution where the output of all these
|> statements will go?

printk messages go to /proc/kmsg. You can read them using cat (e.g. cat
/proc/kmsg)
| can we redirect the output of
|> printk to our console?

There is another way to display kernel messages on a console: managing
ttys. Here is some code (taken from Peter Salzman's "The Linux Kernel
Module Programming Guide"):

static void print_string(char *str)
{
	struct tty_struct *tty;

#if ( LINUX_VERSION_CODE <= KERNEL_VERSION(2,6,5) )
	tty = current->tty;
#else
	tty = current->signal->tty;
#endif

	if (!tty)
		return;

	((my_tty->driver)->write) (my_tty, 0, str, strlen(str));
	((my_tty->driver)->write) (my_tty, 0, "\015\012", 2);

}

Regards,

					Luca
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