From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mx0a-001b2d01.pphosted.com (mx0b-001b2d01.pphosted.com [148.163.158.5]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by lists.ozlabs.org (Postfix) with ESMTPS id 3vSMCG1bDxzDqJ6 for ; Wed, 22 Feb 2017 00:43:21 +1100 (AEDT) Received: from pps.filterd (m0098414.ppops.net [127.0.0.1]) by mx0b-001b2d01.pphosted.com (8.16.0.20/8.16.0.20) with SMTP id v1LDXdO5106438 for ; Tue, 21 Feb 2017 08:43:19 -0500 Received: from e24smtp03.br.ibm.com (e24smtp03.br.ibm.com [32.104.18.24]) by mx0b-001b2d01.pphosted.com with ESMTP id 28rku6ftjn-1 (version=TLSv1.2 cipher=AES256-SHA bits=256 verify=NOT) for ; Tue, 21 Feb 2017 08:43:19 -0500 Received: from localhost by e24smtp03.br.ibm.com with IBM ESMTP SMTP Gateway: Authorized Use Only! Violators will be prosecuted for from ; Tue, 21 Feb 2017 10:43:17 -0300 Received: from d24relay04.br.ibm.com (d24relay04.br.ibm.com [9.18.232.146]) by d24dlp01.br.ibm.com (Postfix) with ESMTP id 612D1352006C for ; Tue, 21 Feb 2017 08:42:40 -0500 (EST) Received: from d24av05.br.ibm.com (d24av05.br.ibm.com [9.18.232.44]) by d24relay04.br.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id v1LDh5FG32571572 for ; Tue, 21 Feb 2017 10:43:13 -0300 Received: from d24av05.br.ibm.com (localhost [127.0.0.1]) by d24av05.br.ibm.com (8.14.4/8.14.4/NCO v10.0 AVout) with ESMTP id v1LDgg9G028735 for ; Tue, 21 Feb 2017 10:42:42 -0300 Subject: Re: [PATCH 2/3] powerpc/xmon: drop the nobt option from xmon plus minor fixes To: Michael Ellerman , linuxppc-dev@lists.ozlabs.org References: <1487290677-7200-1-git-send-email-gpiccoli@linux.vnet.ibm.com> <1487290677-7200-3-git-send-email-gpiccoli@linux.vnet.ibm.com> <87poicm8cw.fsf@concordia.ellerman.id.au> <87k28km7jz.fsf@concordia.ellerman.id.au> Cc: paulus@samba.org, npiggin@gmail.com, xinhui.pan@linux.vnet.ibm.com From: "Guilherme G. Piccoli" Date: Tue, 21 Feb 2017 10:42:16 -0300 MIME-Version: 1.0 In-Reply-To: <87k28km7jz.fsf@concordia.ellerman.id.au> Content-Type: text/plain; charset=windows-1252 Message-Id: <349279b4-3935-bb53-5807-d8a0a1b8a5c4@linux.vnet.ibm.com> List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , On 02/21/2017 02:33 AM, Michael Ellerman wrote: > Michael Ellerman writes: >> "Guilherme G. Piccoli" writes: > ... >> >> Imagine you're debugging a machine and you drop into xmon to check >> something, then drop out again. >> >> Then you go away and leave the box, and it crashes into xmon, but xmon >> doesn't print a backtrace because you've already been in xmon. Usually >> you can just get on the console and hit 't', but sometimes the machine >> crashes so hard that xmon doesn't take input - in which case you now >> have no backtrace. :sadface: > > OK I read your patch wrong, the above won't happen. > > But I still don't think we need any of the auto back trace suppression. Just to clarify, so do you think we always should print the backtrace automatically, correctly? I can change it and resend the patch if you want. Thanks, Guilherme > > cheers >