From: Jason Cox <steel300@gentoo.org>
To: linux-kernel@vger.kernel.org
Subject: Change number of tty devices
Date: Mon, 19 Apr 2004 22:38:53 +0000 [thread overview]
Message-ID: <E1BFhPh-00027s-IL@smtp.gentoo.org> (raw)
[-- Attachment #1: Type: text/plain, Size: 437 bytes --]
Hello all,
Often, I have wondered what the need for 64 tty devices in /dev is. I began tinkering with the code and am wondering why it's not user configurable. I came up with a quick patch to add it as an option under drivers/char/Kconfig. I also made a lower bound of 12. If this is an idea worth pursuing, please let me know. If this idea has been rejected before, I apologize. What do you think of this idea?
Thanks You,
Jason Cox
[-- Attachment #2: config_tty_devices.patch --]
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diff -urN linux-2.6.5/drivers/char/Kconfig linux-2.6.6_rc1-love1/drivers/char/Kconfig
--- linux-2.6.5/drivers/char/Kconfig 2004-04-19 16:01:50.006624287 -0500
+++ linux-2.6.6_rc1-love1/drivers/char/Kconfig 2004-04-19 16:39:01.877138133 -0500
@@ -57,6 +57,10 @@
If unsure, say Y.
+config NR_TTY_DEVICES
+ int "Number of tty devices"
+ default 63
+
config HW_CONSOLE
bool
depends on VT && !S390 && !UM
diff -urN linux-2.6.5/include/linux/tty.h linux-2.6.6_rc1-love1/include/linux/tty.h
--- linux-2.6.5/include/linux/tty.h 2004-04-19 11:04:19.000000000 -0500
+++ linux-2.6.6_rc1-love1/include/linux/tty.h 2004-04-19 16:52:19.782915029 -0500
@@ -10,8 +10,13 @@
* resizing).
*/
#define MIN_NR_CONSOLES 1 /* must be at least 1 */
+#if (CONFIG_NR_TTY_DEVICES < 11)
#define MAX_NR_CONSOLES 63 /* serial lines start at 64 */
#define MAX_NR_USER_CONSOLES 63 /* must be root to allocate above this */
+#else
+#define MAX_NR_CONSOLES CONFIG_NR_TTY_DEVICES
+#define MAX_NR_USER_CONSOLES CONFIG_NR_TTY_DEVICES
+#endif
/* Note: the ioctl VT_GETSTATE does not work for
consoles 16 and higher (since it returns a short) */
next reply other threads:[~2004-04-19 22:38 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2004-04-19 22:38 Jason Cox [this message]
2004-04-20 12:38 ` [PATCH] Change number of tty devices Jason Cox
2004-04-21 20:14 ` James Simmons
2004-04-22 2:24 ` Jason Cox
2004-04-22 8:33 ` Russell King
2004-04-25 3:15 ` James Simmons
2004-04-25 4:01 ` Horst von Brand
2004-04-25 7:33 ` Russell King
2004-04-25 3:19 ` James Simmons
2004-04-22 3:15 ` Jason Cox
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