From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S262205AbUEBIBL (ORCPT ); Sun, 2 May 2004 04:01:11 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S262272AbUEBIBL (ORCPT ); Sun, 2 May 2004 04:01:11 -0400 Received: from caramon.arm.linux.org.uk ([212.18.232.186]:52494 "EHLO caramon.arm.linux.org.uk") by vger.kernel.org with ESMTP id S262205AbUEBIBJ (ORCPT ); Sun, 2 May 2004 04:01:09 -0400 Date: Sun, 2 May 2004 09:00:59 +0100 From: Russell King To: Andrew Morton Cc: Petr Vandrovec , cw@f00f.org, koke@amedias.org, linux-kernel@vger.kernel.org Subject: Re: strange delays on console logouts (tty != 1) Message-ID: <20040502090059.A9605@flint.arm.linux.org.uk> Mail-Followup-To: Andrew Morton , Petr Vandrovec , cw@f00f.org, koke@amedias.org, linux-kernel@vger.kernel.org References: <20040430195351.GA1837@amedias.org> <20040501214617.GA6446@taniwha.stupidest.org> <20040501232448.GA4707@vana.vc.cvut.cz> <20040501180347.31f85764.akpm@osdl.org> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline User-Agent: Mutt/1.2.5.1i In-Reply-To: <20040501180347.31f85764.akpm@osdl.org>; from akpm@osdl.org on Sat, May 01, 2004 at 06:03:47PM -0700 Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org On Sat, May 01, 2004 at 06:03:47PM -0700, Andrew Morton wrote: > Petr Vandrovec wrote: > > > > (2) tty hangup is scheduled for work_queue. > > This is the problem, isn't it? > > >From what context is tty_hangup() invoked? (stick a dump_stack() in there>?) >>From IRQ context. It's tty_vhangup() which is invoked from user context, and calls do_tty_hangup() synchronously. -- Russell King Linux kernel 2.6 ARM Linux - http://www.arm.linux.org.uk/ maintainer of: 2.6 PCMCIA - http://pcmcia.arm.linux.org.uk/ 2.6 Serial core