From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-3.6 required=3.0 tests=BAYES_00,DKIM_INVALID, DKIM_SIGNED,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE, SPF_PASS autolearn=no autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 48332C433DB for ; Mon, 29 Mar 2021 09:49:49 +0000 (UTC) Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 8FFF36191F for ; Mon, 29 Mar 2021 09:49:48 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 8FFF36191F Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=redhat.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Received: from localhost ([::1]:51338 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1lQoWp-0001Tb-9b for qemu-devel@archiver.kernel.org; Mon, 29 Mar 2021 05:49:47 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:55596) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1lQoVa-0000rW-8S for qemu-devel@nongnu.org; Mon, 29 Mar 2021 05:48:30 -0400 Received: from us-smtp-delivery-124.mimecast.com ([216.205.24.124]:53359) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1lQoVX-0002VL-Sr for qemu-devel@nongnu.org; Mon, 29 Mar 2021 05:48:29 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1617011307; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=MBE+SgwNMI3IQlaPr85o1e69oy9vHUd7O6ldzQaI/xs=; b=G7phaL8BNUBxyKGIwbnNXyhoj82bMMvRWXo/DoOwc0LKeLspH0fiviRtF18G2ufZNXLWR7 eCufGk1cIDa9EbxTfambczalDJ72nR/rxvacSMgEkzu+6cQT0iD6IKA1TSX0sE06I42+77 25wVTjiFwb9iA75SPO96bV3YsCQZDI8= Received: from mimecast-mx01.redhat.com (mimecast-mx01.redhat.com [209.132.183.4]) (Using TLS) by relay.mimecast.com with ESMTP id us-mta-265-8IwPd-t6OImZjO1eloUcZQ-1; Mon, 29 Mar 2021 05:48:25 -0400 X-MC-Unique: 8IwPd-t6OImZjO1eloUcZQ-1 Received: from smtp.corp.redhat.com (int-mx08.intmail.prod.int.phx2.redhat.com [10.5.11.23]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx01.redhat.com (Postfix) with ESMTPS id 2642B871377 for ; Mon, 29 Mar 2021 09:48:24 +0000 (UTC) Received: from sirius.home.kraxel.org (ovpn-112-102.ams2.redhat.com [10.36.112.102]) by smtp.corp.redhat.com (Postfix) with ESMTPS id 07C9719C45; Mon, 29 Mar 2021 09:48:20 +0000 (UTC) Received: by sirius.home.kraxel.org (Postfix, from userid 1000) id 5823118000A0; Mon, 29 Mar 2021 11:48:18 +0200 (CEST) Date: Mon, 29 Mar 2021 11:48:18 +0200 From: Gerd Hoffmann To: Daniel =?utf-8?B?UC4gQmVycmFuZ8Op?= Subject: Re: [PATCH v3 0/8] [RfC] fix tracing for modules Message-ID: <20210329094818.q4xtejd6labmb5gr@sirius.home.kraxel.org> References: <20210121125028.3247190-1-kraxel@redhat.com> <20210203163202.GF241524@stefanha-x1.localdomain> <20210222151332.vea6cszd4pwtkeno@sirius.home.kraxel.org> <20210326124700.taujcpo2xqbn2pzj@sirius.home.kraxel.org> MIME-Version: 1.0 In-Reply-To: X-Scanned-By: MIMEDefang 2.84 on 10.5.11.23 Authentication-Results: relay.mimecast.com; auth=pass smtp.auth=CUSA124A263 smtp.mailfrom=kraxel@redhat.com X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com Content-Type: text/plain; charset=iso-8859-1 Content-Disposition: inline Content-Transfer-Encoding: 8bit Received-SPF: pass client-ip=216.205.24.124; envelope-from=kraxel@redhat.com; helo=us-smtp-delivery-124.mimecast.com X-Spam_score_int: -27 X-Spam_score: -2.8 X-Spam_bar: -- X-Spam_report: (-2.8 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.001, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_LOW=-0.7, RCVD_IN_MSPIKE_H4=-0.01, RCVD_IN_MSPIKE_WL=-0.01, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: qemu-devel@nongnu.org, "Dr. David Alan Gilbert" , Stefan Hajnoczi , Markus Armbruster Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" On Mon, Mar 29, 2021 at 10:23:42AM +0100, Daniel P. Berrangé wrote: > On Fri, Mar 26, 2021 at 01:47:00PM +0100, Gerd Hoffmann wrote: > > Hi, > > > > > eg a trace point "dma_map_wait" gets mapped to probes in many > > > .stp files, once per target, because we need to match based on > > > the executable path: > > > > > > probe qemu.system.x86_64.dma_map_wait = process("/usr/libexec/qemu-system-x86_64").mark("dma_map_wait") > > > probe qemu.system.x86_64.dma_map_wait = process("/usr/libexec/qemu-system-ppc64").mark("dma_map_wait") > > > > Probe qemu.system.ppc64.dma_map_wait = ... > > > > Can I trace qemu started from build directory? > > Seems scripts/qemu-trace-stap doesn't support that. > > We should really generate extra equiv .stp files just for running from > the build. Well, "make install" with --prefix=$HOME/qemu-install fixed that for the time being. Now I have this: kraxel@sirius ~/qemu-install/bin# sudo ./qemu-trace-stap -v run ./qemu-system-x86_64 "qxl_soft_reset" Using tapset dir '/home/kraxel/qemu-install/share/systemtap/tapset' for binary './qemu-system-x86_64' Compiling script 'probe qemu.system.x86_64.log.qxl_soft_reset {}' semantic error: unresolved function pid: identifier 'pid' at /home/kraxel/qemu-install/share/systemtap/tapset/qemu-system-x86_64-log.stp:5451:41 source: printf("%d@%d qxl_soft_reset %d\n", pid(), gettimeofday_ns(), qid) ^ Pass 2: analysis failed. [man error::pass2] Any clue why pid() isn't known? thanks, Gerd