From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751713AbbAXWYk (ORCPT ); Sat, 24 Jan 2015 17:24:40 -0500 Received: from comal.ext.ti.com ([198.47.26.152]:54921 "EHLO comal.ext.ti.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750956AbbAXWYj (ORCPT ); Sat, 24 Jan 2015 17:24:39 -0500 Date: Sat, 24 Jan 2015 16:23:42 -0600 From: Felipe Balbi To: Arnaldo Carvalho de Melo CC: Felipe Balbi , Peter Zijlstra , Paul Mackerras , Ingo Molnar , Tony Lindgren , Linux Kernel Mailing List , Linux ARM Kernel Mailing List , Linux OMAP Mailing List Subject: Re: perf not capturing stack traces Message-ID: <20150124222342.GA26941@saruman.tx.rr.com> Reply-To: References: <20150123195128.GE26557@saruman.tx.rr.com> <20150123205959.GD3073@kernel.org> <20150123223745.GJ26557@saruman.tx.rr.com> <20150124151204.GF3073@kernel.org> MIME-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha1; protocol="application/pgp-signature"; boundary="XsQoSWH+UP9D9v3l" Content-Disposition: inline In-Reply-To: <20150124151204.GF3073@kernel.org> 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 --XsQoSWH+UP9D9v3l Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable Hi, On Sat, Jan 24, 2015 at 12:12:04PM -0300, Arnaldo Carvalho de Melo wrote: > Em Fri, Jan 23, 2015 at 04:37:45PM -0600, Felipe Balbi escreveu: > > On Fri, Jan 23, 2015 at 05:59:59PM -0300, Arnaldo Carvalho de Melo wrot= e: > > > Em Fri, Jan 23, 2015 at 01:51:28PM -0600, Felipe Balbi escreveu: > > > > I'm using v3.19-rc5 on an ARM Cortex A9 board. Unfortunately, perf = is > > > > not able to capture any stack traces even though I CONFIG_STACKTRAC= E, > > > > CONFIG_FRAME_POINTER and CONFIG_ARM_UNWIND all enabled. > > > >=20 > > > > I wonder if anybody else is facing similar issues. > > >=20 > > > Did it work with a previous kernel? > >=20 > > haven't checked with this board. First time I tried to use perf for > > anything. >=20 > And it is the first time I've heard about such a problem, not dealing > with ARM myself, so I guess this is a case for looking if there was some > previous kernel where this worked, then trying to bisect where the > problem was introduced :-\ yeah, I'll try a few older kernels, also see if I can reproduce on other boards. cheers --=20 balbi --XsQoSWH+UP9D9v3l Content-Type: application/pgp-signature; name="signature.asc" Content-Description: Digital signature -----BEGIN PGP SIGNATURE----- Version: GnuPG v1 iQIcBAEBAgAGBQJUxBtuAAoJEIaOsuA1yqREY04QAKD2Iw6pAQN7tCjURA8ll+aa qVa14qrSQWadeqcvuNHwmtr6e0fTtVnEb5GwaNR9rG27XiteEv51WHnhGPR9bYWG z3d5lyHF8Aha2KZH9kmzi8RBQ3MRuMmWQ1bmNDyXMTWGZxbNA7AseIS/yxEwiHAd vP+cFPNdNCq51KhT7CYBPc0B+6ORjQ+xFZhSwyvGI3HbBjiaioJUbi/mPuFOQUyl lMqrMNW+e8VI8rhLERWBJqmCLKWdKceWTGA35d1XwFR37gBZvJAwRCcyb68sWjfE zgnQGng/kL3tX7JjwvRydByfsxDAf1wYKEuI6Hbxe9GY8mRn+ehkKiKhDr+cyJx9 rjOnpYksmqutKUHeA0wCSqeGeGdb7c9cXZ+Qpp2h2Mj7GU+oXYLm/fII6Q08DM+y 8S2Z4tvgYf74MAhLhEOiuy18OGk8+IaSxulfd1o97RT0Uk4pRz74YebW6AKoOlfs 42m6fjjEae5gpPe5dyOzqkdYpMQlfuv2gw4RLjVtKS62Q8ypFLY9zgwhIPnUbXG6 /2383K1A1PuBB2m2OJ5pLGkOlPGjtU3DRJfe9LHfCNr2qT3LBFzqVHIrX7bfw3eI w+dWbKLi1R7VlVoI+3NdufdZ6lUU7BDJcDLkZAPirsYEJ5t85J8/kZSA6HULHL6U 9y7Pc+ihMmnsH63Ay2D1 =eaJX -----END PGP SIGNATURE----- --XsQoSWH+UP9D9v3l-- From mboxrd@z Thu Jan 1 00:00:00 1970 From: Felipe Balbi Subject: Re: perf not capturing stack traces Date: Sat, 24 Jan 2015 16:23:42 -0600 Message-ID: <20150124222342.GA26941@saruman.tx.rr.com> References: <20150123195128.GE26557@saruman.tx.rr.com> <20150123205959.GD3073@kernel.org> <20150123223745.GJ26557@saruman.tx.rr.com> <20150124151204.GF3073@kernel.org> Reply-To: Mime-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha1; protocol="application/pgp-signature"; boundary="XsQoSWH+UP9D9v3l" Return-path: Received: from comal.ext.ti.com ([198.47.26.152]:54921 "EHLO comal.ext.ti.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750956AbbAXWYj (ORCPT ); Sat, 24 Jan 2015 17:24:39 -0500 Content-Disposition: inline In-Reply-To: <20150124151204.GF3073@kernel.org> Sender: linux-omap-owner@vger.kernel.org List-Id: linux-omap@vger.kernel.org To: Arnaldo Carvalho de Melo Cc: Felipe Balbi , Peter Zijlstra , Paul Mackerras , Ingo Molnar , Tony Lindgren , Linux Kernel Mailing List , Linux ARM Kernel Mailing List , Linux OMAP Mailing List --XsQoSWH+UP9D9v3l Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable Hi, On Sat, Jan 24, 2015 at 12:12:04PM -0300, Arnaldo Carvalho de Melo wrote: > Em Fri, Jan 23, 2015 at 04:37:45PM -0600, Felipe Balbi escreveu: > > On Fri, Jan 23, 2015 at 05:59:59PM -0300, Arnaldo Carvalho de Melo wrot= e: > > > Em Fri, Jan 23, 2015 at 01:51:28PM -0600, Felipe Balbi escreveu: > > > > I'm using v3.19-rc5 on an ARM Cortex A9 board. Unfortunately, perf = is > > > > not able to capture any stack traces even though I CONFIG_STACKTRAC= E, > > > > CONFIG_FRAME_POINTER and CONFIG_ARM_UNWIND all enabled. > > > >=20 > > > > I wonder if anybody else is facing similar issues. > > >=20 > > > Did it work with a previous kernel? > >=20 > > haven't checked with this board. First time I tried to use perf for > > anything. >=20 > And it is the first time I've heard about such a problem, not dealing > with ARM myself, so I guess this is a case for looking if there was some > previous kernel where this worked, then trying to bisect where the > problem was introduced :-\ yeah, I'll try a few older kernels, also see if I can reproduce on other boards. cheers --=20 balbi --XsQoSWH+UP9D9v3l Content-Type: application/pgp-signature; name="signature.asc" Content-Description: Digital signature -----BEGIN PGP SIGNATURE----- Version: GnuPG v1 iQIcBAEBAgAGBQJUxBtuAAoJEIaOsuA1yqREY04QAKD2Iw6pAQN7tCjURA8ll+aa qVa14qrSQWadeqcvuNHwmtr6e0fTtVnEb5GwaNR9rG27XiteEv51WHnhGPR9bYWG z3d5lyHF8Aha2KZH9kmzi8RBQ3MRuMmWQ1bmNDyXMTWGZxbNA7AseIS/yxEwiHAd vP+cFPNdNCq51KhT7CYBPc0B+6ORjQ+xFZhSwyvGI3HbBjiaioJUbi/mPuFOQUyl lMqrMNW+e8VI8rhLERWBJqmCLKWdKceWTGA35d1XwFR37gBZvJAwRCcyb68sWjfE zgnQGng/kL3tX7JjwvRydByfsxDAf1wYKEuI6Hbxe9GY8mRn+ehkKiKhDr+cyJx9 rjOnpYksmqutKUHeA0wCSqeGeGdb7c9cXZ+Qpp2h2Mj7GU+oXYLm/fII6Q08DM+y 8S2Z4tvgYf74MAhLhEOiuy18OGk8+IaSxulfd1o97RT0Uk4pRz74YebW6AKoOlfs 42m6fjjEae5gpPe5dyOzqkdYpMQlfuv2gw4RLjVtKS62Q8ypFLY9zgwhIPnUbXG6 /2383K1A1PuBB2m2OJ5pLGkOlPGjtU3DRJfe9LHfCNr2qT3LBFzqVHIrX7bfw3eI w+dWbKLi1R7VlVoI+3NdufdZ6lUU7BDJcDLkZAPirsYEJ5t85J8/kZSA6HULHL6U 9y7Pc+ihMmnsH63Ay2D1 =eaJX -----END PGP SIGNATURE----- --XsQoSWH+UP9D9v3l-- From mboxrd@z Thu Jan 1 00:00:00 1970 From: balbi@ti.com (Felipe Balbi) Date: Sat, 24 Jan 2015 16:23:42 -0600 Subject: perf not capturing stack traces In-Reply-To: <20150124151204.GF3073@kernel.org> References: <20150123195128.GE26557@saruman.tx.rr.com> <20150123205959.GD3073@kernel.org> <20150123223745.GJ26557@saruman.tx.rr.com> <20150124151204.GF3073@kernel.org> Message-ID: <20150124222342.GA26941@saruman.tx.rr.com> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org Hi, On Sat, Jan 24, 2015 at 12:12:04PM -0300, Arnaldo Carvalho de Melo wrote: > Em Fri, Jan 23, 2015 at 04:37:45PM -0600, Felipe Balbi escreveu: > > On Fri, Jan 23, 2015 at 05:59:59PM -0300, Arnaldo Carvalho de Melo wrote: > > > Em Fri, Jan 23, 2015 at 01:51:28PM -0600, Felipe Balbi escreveu: > > > > I'm using v3.19-rc5 on an ARM Cortex A9 board. Unfortunately, perf is > > > > not able to capture any stack traces even though I CONFIG_STACKTRACE, > > > > CONFIG_FRAME_POINTER and CONFIG_ARM_UNWIND all enabled. > > > > > > > > I wonder if anybody else is facing similar issues. > > > > > > Did it work with a previous kernel? > > > > haven't checked with this board. First time I tried to use perf for > > anything. > > And it is the first time I've heard about such a problem, not dealing > with ARM myself, so I guess this is a case for looking if there was some > previous kernel where this worked, then trying to bisect where the > problem was introduced :-\ yeah, I'll try a few older kernels, also see if I can reproduce on other boards. cheers -- balbi -------------- next part -------------- A non-text attachment was scrubbed... Name: signature.asc Type: application/pgp-signature Size: 819 bytes Desc: Digital signature URL: