From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932834AbaLJSe5 (ORCPT ); Wed, 10 Dec 2014 13:34:57 -0500 Received: from mail-qa0-f42.google.com ([209.85.216.42]:45072 "EHLO mail-qa0-f42.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932646AbaLJSez (ORCPT ); Wed, 10 Dec 2014 13:34:55 -0500 Date: Wed, 10 Dec 2014 13:34:50 -0500 From: Tejun Heo To: Greg Kroah-Hartman Cc: linux-serial@vger.kernel.org, Andrew Morton , linux-kernel@vger.kernel.org, Lai Jiangshan , Linus Torvalds , Ingo Molnar Subject: Re: [PATCH wq/for-3.19 3/3] workqueue: dump workqueues on sysrq-t Message-ID: <20141210183450.GG6294@htj.dyndns.org> References: <20141208174326.GB12274@htj.dyndns.org> <20141208174406.GC12274@htj.dyndns.org> <20141208174733.GD12274@htj.dyndns.org> <20141208100613.ecc66d89.akpm@linux-foundation.org> <20141208184035.GE12274@htj.dyndns.org> <20141208110515.7860d68baca2b3bd46c9dab7@linux-foundation.org> <20141208192229.GF12274@htj.dyndns.org> <20141210045057.GA11973@kroah.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20141210045057.GA11973@kroah.com> User-Agent: Mutt/1.5.23 (2014-03-12) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hello, Greg. On Tue, Dec 09, 2014 at 11:50:57PM -0500, Greg Kroah-Hartman wrote: > Oh wait, I think that might be it, shift is needed for the sysrq key on > the keyboard to start with, right? So there probably isn't a way to On x86, the combo is alt-sysrq, so shift can theoretically be added. > test the difference of a lower/upper case key here. > > I'm traveling this week, and don't have access to a "real" keyboard at > the moment, but this should be pretty easy for someone to test who has > one and cares about this type of thing {hint}. Just tested on a PS/2 port attached keyboard and it doesn't go through. I'm not sure where this is getting lost but given that people sometimes have to use ctrl too to invoke sysrq, throwing in shift makes it a four key combo which is likely to be over the rollover capabilities of most keyboards. It doesn't seem like a good path to follow to me. :( Thanks. -- tejun