From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751391AbVILPG5 (ORCPT ); Mon, 12 Sep 2005 11:06:57 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1751323AbVILPGd (ORCPT ); Mon, 12 Sep 2005 11:06:33 -0400 Received: from pop.gmx.net ([213.165.64.20]:38340 "HELO mail.gmx.net") by vger.kernel.org with SMTP id S1751389AbVILPGW (ORCPT ); Mon, 12 Sep 2005 11:06:22 -0400 X-Authenticated: #271361 Date: Mon, 12 Sep 2005 17:06:18 +0200 From: Edgar Toernig To: linux-kernel@vger.kernel.org Subject: [udev/vcs] tons of creating/removing /dev/vcs* during boot Message-Id: <20050912170618.69e18341.froese@gmx.de> Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit X-Y-GMX-Trusted: 0 Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Hi, switching from SuSE's 2.6.11.4 to vanilla 2.6.13 I noticed that I get tons of these lines in the log during boot: udev[2124]: configured rule in '/etc/udev/rules.d/50-udev.rules[98]' ... udev[2121]: creating device node '/dev/vcs5' udev[2124]: creating device node '/dev/vcsa3' udev[2140]: configured rule in '/etc/udev/rules.d/50-udev.rules[98]' ... udev[2144]: configured rule in '/etc/udev/rules.d/50-udev.rules[98]' ... udev[2140]: creating device node '/dev/vcs3' udev[2144]: creating device node '/dev/vcsa6' udev[2147]: removing device node '/dev/vcs6' udev[2149]: configured rule in '/etc/udev/rules.d/50-udev.rules[98]' ... udev[2158]: removing device node '/dev/vcs4' udev[2157]: removing device node '/dev/vcsa3' udev[2149]: creating device node '/dev/vcsa5' udev[2172]: configured rule in '/etc/udev/rules.d/50-udev.rules[98]' .... udev[2171]: removing device node '/dev/vcsa2' udev[2172]: creating device node '/dev/vcs5' It's caused by various loadkeys, setleds, etc performed early in an init script. It seems, that every open/close of a tty generates a hotplug event for the appropriate vcs/vcsa device. It stops at the moment gettys are spawned. Looking at the 2.6.11.4 source of drivers/char/vc_screen.c I see that hotplug events are explicitly disabled for the vcs and vcsa devices (not sure whether this was done by SuSE). In 2.6.13 all of that code is gone, including the class_simple that was used to disable hotplug events. How can I avoid all of these hotplug events? Best would be of course to generate only a single event at the same time the tty device is create. But I could also live with no hotplug events for vcs* at all. Ciao, ET.