path: root/Documentation/devices.txt
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authorSamo Pogacnik <samo_pogacnik@t-2.net>2010-08-25 20:44:07 +0200
committerGreg Kroah-Hartman <gregkh@suse.de>2010-10-22 10:20:02 -0700
commit24b4b67d17c308aaa956b73ab1e88190f6642bbe (patch)
tree86ff019ce69aca93371719487869de4ad6d205e0 /Documentation/devices.txt
parent891b9dd10764352926e1e107756aa229dfa2c210 (diff)
add ttyprintk driver
Ttyprintk is a pseudo TTY driver, which allows users to make printk messages, via output to ttyprintk device. It is possible to store "console" messages inline with kernel messages for better analyses of the boot process, for example. Signed-off-by: Samo Pogacnik <samo_pogacnik@t-2.net> Acked-by: Alan Cox <alan@lxorguk.ukuu.org.uk> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'Documentation/devices.txt')
1 files changed, 1 insertions, 0 deletions
diff --git a/Documentation/devices.txt b/Documentation/devices.txt
index d0d1df6cb5d..6a08fd731d2 100644
--- a/Documentation/devices.txt
+++ b/Documentation/devices.txt
@@ -239,6 +239,7 @@ Your cooperation is appreciated.
0 = /dev/tty Current TTY device
1 = /dev/console System console
2 = /dev/ptmx PTY master multiplex
+ 3 = /dev/ttyprintk User messages via printk TTY device
64 = /dev/cua0 Callout device for ttyS0
255 = /dev/cua191 Callout device for ttyS191