Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753694Ab3JYM7i (ORCPT ); Fri, 25 Oct 2013 08:59:38 -0400 Received: from e7.ny.us.ibm.com ([32.97.182.137]:42735 "EHLO e7.ny.us.ibm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752222Ab3JYM7h (ORCPT ); Fri, 25 Oct 2013 08:59:37 -0400 Date: Fri, 25 Oct 2013 18:29:21 +0530 From: Srikar Dronamraju To: Pekka Enberg Cc: Hemant Kumar , LKML , Peter Zijlstra , Oleg Nesterov , hegdevasant@linux.vnet.ibm.com, Ingo Molnar , anton@redhat.com, systemtap@sourceware.org, Namhyung Kim , Masami Hiramatsu , aravinda@linux.vnet.ibm.com Subject: Re: [PATCH v4 2/3] Support for perf to probe into SDT markers: Message-ID: <20131025125921.GA29424@linux.vnet.ibm.com> Reply-To: Srikar Dronamraju References: <20131023044511.1886.82571.stgit@hemant-fedora> <20131023050502.1886.15779.stgit@hemant-fedora> MIME-Version: 1.0 Content-Type: text/plain; charset=iso-8859-1 Content-Disposition: inline In-Reply-To: User-Agent: Mutt/1.5.21 (2010-09-15) X-TM-AS-MML: No X-Content-Scanned: Fidelis XPS MAILER x-cbid: 13102512-5806-0000-0000-00002336F4BE Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1147 Lines: 41 Hi Pekka, > > > > You can now use it in all perf tools, such as: > > > > perf record -e libc:my_event -aR sleep 1 > > Is there a technical reason why 'perf list' could not show all the > available SDT markers on a system and that the 'market to event' > mapping cannot happen automatically? > Technically feasible. But then we would have to parse each of the libraries and executables to list them. Right? I am not sure if such a delay is acceptable. Also if a binary exists in a path thats is not covered in the default search, an user might believe that his binary may not have markers. I know the above reason is more of a user folly than a tooling issue. > So instead of doing all the command line magic above I'd do: > > perf list > > libc:setjmp [SDT marker] > > and I could just do > > perf record -e libc:setjmp -AR sleep 1 > > ? -- Thanks and Regards Srikar Dronamraju -- 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/