From d91a4a59905ad81d5eec7d866c763bfe5fd685f7 Mon Sep 17 00:00:00 2001
From: atatat <atatat@NetBSD.org>
Date: Thu, 16 Dec 2004 04:33:03 +0000
Subject: [PATCH] Put caching back on the pts major number.  It's worth the
 code overhead not to go look it up a zillion times when running fstat or ps
 on a machine with a billion people logged in.  fstat mostly.

---
 lib/libc/gen/devname.c | 10 +++++-----
 1 file changed, 5 insertions(+), 5 deletions(-)

diff --git a/lib/libc/gen/devname.c b/lib/libc/gen/devname.c
index 1818995e226f..6160d5558f4f 100644
--- a/lib/libc/gen/devname.c
+++ b/lib/libc/gen/devname.c
@@ -1,4 +1,4 @@
-/*	$NetBSD: devname.c,v 1.15 2004/12/16 04:15:19 atatat Exp $	*/
+/*	$NetBSD: devname.c,v 1.16 2004/12/16 04:33:03 atatat Exp $	*/
 
 /*-
  * Copyright (c) 2000 The NetBSD Foundation, Inc.
@@ -74,7 +74,7 @@
 #if 0
 static char sccsid[] = "@(#)devname.c	8.2 (Berkeley) 4/29/95";
 #else
-__RCSID("$NetBSD: devname.c,v 1.15 2004/12/16 04:15:19 atatat Exp $");
+__RCSID("$NetBSD: devname.c,v 1.16 2004/12/16 04:33:03 atatat Exp $");
 #endif
 #endif /* LIBC_SCCS and not lint */
 
@@ -120,8 +120,7 @@ devname(dev, type)
 	DBT data, key;
 	DEVC *ptr, **pptr;
 	static DEVC **devtb = NULL;
-	dev_t pts;
-
+	static dev_t pts = (dev_t)~1;
 
 	if (!db && !failure &&
 	    !(db = dbopen(_PATH_DEVDB, O_RDONLY, 0, DB_HASH, NULL))) {
@@ -173,7 +172,8 @@ devname(dev, type)
 			return (NULL);
 		ptr->valid = INVALID;
 		if (type == S_IFCHR) {
-			pts = getdevmajor("pts", S_IFCHR);
+			if (pts == (dev_t)~1)
+				pts = getdevmajor("pts", S_IFCHR);
 			if (pts != (dev_t)~0 && major(dev) == pts) {
 				(void)snprintf(ptr->name, sizeof(ptr->name),
 				    "%s%d", _PATH_DEV_PTS +