Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754624Ab3JaKzh (ORCPT ); Thu, 31 Oct 2013 06:55:37 -0400 Received: from mx1.redhat.com ([209.132.183.28]:24497 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753973Ab3JaKze (ORCPT ); Thu, 31 Oct 2013 06:55:34 -0400 Subject: Re: [PATCH v4 2/3] Support for perf to probe into SDT markers: From: Mark Wielaard To: Pekka Enberg Cc: Masami Hiramatsu , "Frank Ch. Eigler" , Pekka Enberg , Hemant Kumar , LKML , Srikar Dronamraju , Peter Zijlstra , Oleg Nesterov , hegdevasant@linux.vnet.ibm.com, Ingo Molnar , anton@redhat.com, systemtap@sourceware.org, Namhyung Kim , aravinda@linux.vnet.ibm.com, dsahern@gmail.com, "yrl.pp-manager.tt@hitachi.com" In-Reply-To: <5270F2DE.6040505@iki.fi> References: <20131023044511.1886.82571.stgit@hemant-fedora> <20131023050502.1886.15779.stgit@hemant-fedora> <5270D9F7.3090105@hitachi.com> <5270F2DE.6040505@iki.fi> Content-Type: text/plain; charset="UTF-8" Date: Thu, 31 Oct 2013 11:54:46 +0100 Message-ID: <1383216886.6521.5910.camel@bordewijk.wildebeest.org> Mime-Version: 1.0 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 843 Lines: 25 On Wed, 2013-10-30 at 13:51 +0200, Pekka Enberg wrote: > On 10/30/13 12:05 PM, Masami Hiramatsu wrote: > > To find all system libraries, we can use ldconfig. > > > > $ ldconfig --print-cache > > > > shows what dynamic libraries will be loaded. On my own laptop (running > > ubuntu13.04) shows ~1000 libs. > > Good point. That definitely narrows down the scanned set. It is fast. But that would miss the various libjvm.so variants for example. Or other programs, like libreoffice, which have SDT probes in their internal shared libraries that aren't in the default ldconfig paths. Cheers, Mark -- 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/