Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1757304Ab3J1RcG (ORCPT ); Mon, 28 Oct 2013 13:32:06 -0400 Received: from e7.ny.us.ibm.com ([32.97.182.137]:53564 "EHLO e7.ny.us.ibm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1756645Ab3J1RcE (ORCPT ); Mon, 28 Oct 2013 13:32:04 -0400 Date: Mon, 28 Oct 2013 23:01:52 +0530 From: Srikar Dronamraju To: Pekka Enberg Cc: Masami Hiramatsu , Hemant Kumar , LKML , Peter Zijlstra , Oleg Nesterov , hegdevasant@linux.vnet.ibm.com, Ingo Molnar , anton@redhat.com, systemtap@sourceware.org, Namhyung Kim , aravinda@linux.vnet.ibm.com Subject: Re: [PATCH v4 2/3] Support for perf to probe into SDT markers: Message-ID: <20131028173152.GB1040@linux.vnet.ibm.com> Reply-To: Srikar Dronamraju References: <20131023044511.1886.82571.stgit@hemant-fedora> <20131023050502.1886.15779.stgit@hemant-fedora> <526E4940.8000608@hitachi.com> <526E5BA5.7050103@iki.fi> <20131028141152.GA1040@linux.vnet.ibm.com> <526E72EC.9060400@iki.fi> MIME-Version: 1.0 Content-Type: text/plain; charset=iso-8859-1 Content-Disposition: inline In-Reply-To: <526E72EC.9060400@iki.fi> User-Agent: Mutt/1.5.21 (2010-09-15) X-TM-AS-MML: No X-Content-Scanned: Fidelis XPS MAILER x-cbid: 13102817-5806-0000-0000-0000233D5409 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 832 Lines: 25 > > > >But what if a system has both 32 bit libc and 64 bit libc? > >Wont we could end up with 2 libc:setjmp? > >Should we give some more intelligence into perf to choose the 64 bit > >libc over 32 bit one? > > You can just trace both of them by default, no? > There has to be a one to one association with the event name and its mapping. Every event name will finally map to a unique inode and an offset. One option would be for perf to look at these markers and have a different event name for similar markers in different executables. -- 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/