Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752631AbaFFIRw (ORCPT ); Fri, 6 Jun 2014 04:17:52 -0400 Received: from bombadil.infradead.org ([198.137.202.9]:52176 "EHLO bombadil.infradead.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751783AbaFFIRs (ORCPT ); Fri, 6 Jun 2014 04:17:48 -0400 Date: Fri, 6 Jun 2014 10:17:26 +0200 From: Peter Zijlstra To: Ingo Molnar Cc: Frederic Weisbecker , Richard Yao , Thomas Gleixner , Ingo Molnar , "H. Peter Anvin" , x86@kernel.org, Andrew Morton , Tejun Heo , Vineet Gupta , Jesper Nilsson , Jiri Slaby , linux-kernel@vger.kernel.org, kernel@gentoo.org, Brian Behlendorf , Linus Torvalds , Arnaldo Carvalho de Melo , Jiri Olsa Subject: Re: [PATCH] x86/dumpstack: Walk frames when built with frame pointers Message-ID: <20140606081726.GT6758@twins.programming.kicks-ass.net> References: <1398535818-14217-1-git-send-email-ryao@gentoo.org> <20140427120820.GC22116@gmail.com> <20140430215606.GD17745@localhost.localdomain> <20140507164014.GB16034@gmail.com> MIME-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha1; protocol="application/pgp-signature"; boundary="pd495SECmvzXpBRb" Content-Disposition: inline In-Reply-To: <20140507164014.GB16034@gmail.com> User-Agent: Mutt/1.5.21 (2012-12-30) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org --pd495SECmvzXpBRb Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On Wed, May 07, 2014 at 06:40:14PM +0200, Ingo Molnar wrote: > Agreed, that's a very good point. >=20 > Also, consider the following holistic argument, what is easier to=20 > achieve, when looking at an oops and not seeing the bug: >=20 > - if only I had more information > - if only I had less information >=20 > we cannot put in information that we cut out, but it's not=20 > particularly hard to skip overly verbose information in most cases. > =20 > Yes, there's a line to be drawn with verbosity: scroll-off is a=20 > concern when the oops does not make it to a log file. >=20 > So I don't really know. So it really stinks its so hard to debug laptops, and it doesn't help the ehci debug dongle costs an arm and a leg. Hopefully the EFI pstore thing will work out, but I've already heard that can wear out very quickly and render your machine a brick :-( Me, I simply refuse to work on machines if they don't have a serial line, but in general that's not a tenable position I suppose :/ --pd495SECmvzXpBRb Content-Type: application/pgp-signature -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.12 (GNU/Linux) iQIcBAEBAgAGBQJTkXkWAAoJEHZH4aRLwOS6h8gP/At7ksJPLulxaZAb4ruWbxPr 9+Y5gGnT/QEctyT1E8doHs3SBiKXmCjdq87GG78XTbwfzltC+NsJcB6eh7ClkPsn YG0JGiekhAPa3sNFGxpvH2Yg3+JhihBBT8RSQmRFHXX9lGvllIQaAMniLSyC3h6w 8mnZdOR7O4crkUG0xEKvauWD8Fxh9KMVzoYjziXpv1AKYWRZzVnZ59coO95bZrte g/8LjxfCQ4oFQ1kUeG2U4dpEGogXQ/xMyMrk1uvIrvBarStw4ObwFfMnhxPB8gel GFBZUG705tV/MKABJNlsvh2DmzPrkNq56uxyxrX6ZpYgvM/blwZ+wDDWLdk+CXqO ZIWBwUbIiOOZztLvCre4VEyzkV5k9nWHGNd7yi3d0Vhu5m89MWuiNjq4N1xlEwzr pE5Uri4MT4eoIvZoCL4IMDoT/Nj3u9iNwoKJCVRnXvG6YxCtKFNwghHh1EmKsz8q va9JfN/DHmd/QVq/ABTcU5swguXTQwN5ezGZ3KlgXfP49cdau8FI3LBD9JCEE0OQ cC081Q4kwbUAmfWJ+FB86qdoW8oy9VPNC6SXW3nOG2M87g80eo4I4h3wRujyoLMV Y3zryey83XjtjlXVenFK52Zj0v9WdVciod9JcJkkXyItAVjvvKVi7+4ps7KTJPE0 1VxvXj/28sfNBqaTjwzB =6IhC -----END PGP SIGNATURE----- --pd495SECmvzXpBRb-- -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/