From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753675AbbAXPMH (ORCPT ); Sat, 24 Jan 2015 10:12:07 -0500 Received: from mail.kernel.org ([198.145.29.136]:51055 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753389AbbAXPMF (ORCPT ); Sat, 24 Jan 2015 10:12:05 -0500 Date: Sat, 24 Jan 2015 12:12:04 -0300 From: Arnaldo Carvalho de Melo To: Felipe Balbi Cc: 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: <20150124151204.GF3073@kernel.org> References: <20150123195128.GE26557@saruman.tx.rr.com> <20150123205959.GD3073@kernel.org> <20150123223745.GJ26557@saruman.tx.rr.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20150123223745.GJ26557@saruman.tx.rr.com> X-Url: http://acmel.wordpress.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 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 :-\ - Arnaldo From mboxrd@z Thu Jan 1 00:00:00 1970 From: Arnaldo Carvalho de Melo Subject: Re: perf not capturing stack traces Date: Sat, 24 Jan 2015 12:12:04 -0300 Message-ID: <20150124151204.GF3073@kernel.org> References: <20150123195128.GE26557@saruman.tx.rr.com> <20150123205959.GD3073@kernel.org> <20150123223745.GJ26557@saruman.tx.rr.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Return-path: Content-Disposition: inline In-Reply-To: <20150123223745.GJ26557@saruman.tx.rr.com> Sender: linux-kernel-owner@vger.kernel.org To: Felipe Balbi Cc: Peter Zijlstra , Paul Mackerras , Ingo Molnar , Tony Lindgren , Linux Kernel Mailing List , Linux ARM Kernel Mailing List , Linux OMAP Mailing List List-Id: linux-omap@vger.kernel.org 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 :-\ - Arnaldo From mboxrd@z Thu Jan 1 00:00:00 1970 From: acme@kernel.org (Arnaldo Carvalho de Melo) Date: Sat, 24 Jan 2015 12:12:04 -0300 Subject: perf not capturing stack traces In-Reply-To: <20150123223745.GJ26557@saruman.tx.rr.com> References: <20150123195128.GE26557@saruman.tx.rr.com> <20150123205959.GD3073@kernel.org> <20150123223745.GJ26557@saruman.tx.rr.com> Message-ID: <20150124151204.GF3073@kernel.org> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org 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 :-\ - Arnaldo