From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Subject: Re: [openib-general] Re: [PATCH 04/16] ehca: userspace support From: Michael Ellerman To: Pekka Enberg In-Reply-To: <84144f020604272332s6101032cy6936096230f3637c@mail.gmail.com> References: <4450A176.9000008@de.ibm.com> <20060427114355.GB32127@wohnheim.fh-wedel.de> <1146177388.19236.1.camel@localhost.localdomain> <6C4A3B96-4752-4FF9-8FBE-C383B00AE014@schihei.de> <84144f020604272332s6101032cy6936096230f3637c@mail.gmail.com> Content-Type: multipart/signed; micalg=pgp-sha1; protocol="application/pgp-signature"; boundary="=-85y2jQXXyvqP/sZfaF78" Date: Fri, 28 Apr 2006 17:11:32 +1000 Message-Id: <1146208292.6307.4.camel@localhost.localdomain> Mime-Version: 1.0 Cc: linux-kernel@vger.kernel.org, openib-general@openib.org, linuxppc-dev@ozlabs.org, Christoph Raisch , Hoang-Nam Nguyen , Marcus Eder , =?ISO-8859-1?Q?J=F6rn?= Engel Reply-To: michael@ellerman.id.au List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , --=-85y2jQXXyvqP/sZfaF78 Content-Type: text/plain Content-Transfer-Encoding: quoted-printable On Fri, 2006-04-28 at 09:32 +0300, Pekka Enberg wrote: > Hi Heiko, >=20 > On 4/28/06, Heiko J Schick wrote: > > The problem I see with pr_debug() is that it could only activated via > > a compile flag. To use the debug outputs you have to re-compile / > > compile your own kernel. >=20 > Do you really need this heavy debug logging in the first place? You > can use kprobes for arbitrary run-time inspection anyway, so logging > everything seems wasteful. Yeah, I really don't think you want to be running with that kind of debugging gunk in a production kernel. Is someone who can't build their own kernel really going to be able to make sense of the output? cheers --=20 Michael Ellerman IBM OzLabs wwweb: http://michael.ellerman.id.au phone: +61 2 6212 1183 (tie line 70 21183) We do not inherit the earth from our ancestors, we borrow it from our children. - S.M.A.R.T Person --=-85y2jQXXyvqP/sZfaF78 Content-Type: application/pgp-signature; name=signature.asc Content-Description: This is a digitally signed message part -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.2.2 (GNU/Linux) iD8DBQBEUcAkdSjSd0sB4dIRAlELAKCiEQ/iduYNhhgzQA0ZxpWUwqFyvgCfXAJZ OKiZInityOjb9rLsiQfSxxg= =NS3r -----END PGP SIGNATURE----- --=-85y2jQXXyvqP/sZfaF78-- From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1030282AbWD1HLe (ORCPT ); Fri, 28 Apr 2006 03:11:34 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1030283AbWD1HLe (ORCPT ); Fri, 28 Apr 2006 03:11:34 -0400 Received: from ozlabs.org ([203.10.76.45]:928 "EHLO ozlabs.org") by vger.kernel.org with ESMTP id S1030282AbWD1HLe (ORCPT ); Fri, 28 Apr 2006 03:11:34 -0400 Subject: Re: [openib-general] Re: [PATCH 04/16] ehca: userspace support From: Michael Ellerman Reply-To: michael@ellerman.id.au To: Pekka Enberg Cc: Heiko J Schick , =?ISO-8859-1?Q?J=F6rn?= Engel , linux-kernel@vger.kernel.org, openib-general@openib.org, linuxppc-dev@ozlabs.org, Christoph Raisch , Hoang-Nam Nguyen , Marcus Eder In-Reply-To: <84144f020604272332s6101032cy6936096230f3637c@mail.gmail.com> References: <4450A176.9000008@de.ibm.com> <20060427114355.GB32127@wohnheim.fh-wedel.de> <1146177388.19236.1.camel@localhost.localdomain> <6C4A3B96-4752-4FF9-8FBE-C383B00AE014@schihei.de> <84144f020604272332s6101032cy6936096230f3637c@mail.gmail.com> Content-Type: multipart/signed; micalg=pgp-sha1; protocol="application/pgp-signature"; boundary="=-85y2jQXXyvqP/sZfaF78" Date: Fri, 28 Apr 2006 17:11:32 +1000 Message-Id: <1146208292.6307.4.camel@localhost.localdomain> Mime-Version: 1.0 X-Mailer: Evolution 2.6.1 Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org --=-85y2jQXXyvqP/sZfaF78 Content-Type: text/plain Content-Transfer-Encoding: quoted-printable On Fri, 2006-04-28 at 09:32 +0300, Pekka Enberg wrote: > Hi Heiko, >=20 > On 4/28/06, Heiko J Schick wrote: > > The problem I see with pr_debug() is that it could only activated via > > a compile flag. To use the debug outputs you have to re-compile / > > compile your own kernel. >=20 > Do you really need this heavy debug logging in the first place? You > can use kprobes for arbitrary run-time inspection anyway, so logging > everything seems wasteful. Yeah, I really don't think you want to be running with that kind of debugging gunk in a production kernel. Is someone who can't build their own kernel really going to be able to make sense of the output? cheers --=20 Michael Ellerman IBM OzLabs wwweb: http://michael.ellerman.id.au phone: +61 2 6212 1183 (tie line 70 21183) We do not inherit the earth from our ancestors, we borrow it from our children. - S.M.A.R.T Person --=-85y2jQXXyvqP/sZfaF78 Content-Type: application/pgp-signature; name=signature.asc Content-Description: This is a digitally signed message part -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.2.2 (GNU/Linux) iD8DBQBEUcAkdSjSd0sB4dIRAlELAKCiEQ/iduYNhhgzQA0ZxpWUwqFyvgCfXAJZ OKiZInityOjb9rLsiQfSxxg= =NS3r -----END PGP SIGNATURE----- --=-85y2jQXXyvqP/sZfaF78--