From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1756667Ab2GYRIR (ORCPT ); Wed, 25 Jul 2012 13:08:17 -0400 Received: from mx1.redhat.com ([209.132.183.28]:24866 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1756354Ab2GYRIQ (ORCPT ); Wed, 25 Jul 2012 13:08:16 -0400 Date: Wed, 25 Jul 2012 14:00:08 -0300 From: Arnaldo Carvalho de Melo To: Stephane Eranian , Peter Zijlstra Cc: Frederic Weisbecker , Jiri Olsa , a.p.zijlstra@chello.nl, mingo@elte.hu, paulus@samba.org, cjashfor@linux.vnet.ibm.com, eranian@google.com, gorcunov@openvz.org, tzanussi@gmail.com, mhiramat@redhat.com, robert.richter@amd.com, fche@redhat.com, linux-kernel@vger.kernel.org, masami.hiramatsu.pt@hitachi.com, drepper@gmail.com, asharma@fb.com, benjamin.redelings@nescent.org Subject: Re: [PATCH 02/17] perf: Add ability to attach user level registers dump to sample Message-ID: <20120725170008.GB17355@infradead.org> References: <1342959280-5361-1-git-send-email-jolsa@redhat.com> <1342959280-5361-3-git-send-email-jolsa@redhat.com> <20120725161302.GC1173@somewhere.redhat.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20120725161302.GC1173@somewhere.redhat.com> X-Url: http://acmel.wordpress.com User-Agent: Mutt/1.5.20 (2009-12-10) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Em Wed, Jul 25, 2012 at 06:13:06PM +0200, Frederic Weisbecker escreveu: > On Sun, Jul 22, 2012 at 02:14:25PM +0200, Jiri Olsa wrote: > > Introducing PERF_SAMPLE_REGS_USER sample type bit to trigger > > the dump of user level registers on sample. Registers we want > > to dump are specified by sample_regs_user bitmask. > > > > Only user level registers are dumped at the moment. Meaning the > > register values of the user space context as it was before the > > user entered the kernel for whatever reason (syscall, irq, > > exception, or a PMI happening in userspace). > > > > The layout of the sample_regs_user bitmap is described in > > asm/perf_regs.h for archs that support register dump. > > > > This is going to be useful to bring Dwarf CFI based stack > > unwinding on top of samples. > > > > Signed-off-by: Jiri Olsa > > Original-patch-by: Frederic Weisbecker > > Acked-by: Frederic Weisbecker Cool, Stephane, Peter, are you ok with it? Can I get your Acked-by or even Reviewed-by? - Arnaldo