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 542B4C433C1 for ; Wed, 31 Mar 2021 10:56:59 +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 7B47A61952 for ; Wed, 31 Mar 2021 10:56:58 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 7B47A61952 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]:54836 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1lRYWv-0005dv-0T for qemu-devel@archiver.kernel.org; Wed, 31 Mar 2021 06:56:57 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:37386) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1lRYVm-0004zp-Dk for qemu-devel@nongnu.org; Wed, 31 Mar 2021 06:55:46 -0400 Received: from us-smtp-delivery-124.mimecast.com ([170.10.133.124]:55453) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1lRYVi-0004QA-4O for qemu-devel@nongnu.org; Wed, 31 Mar 2021 06:55:45 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1617188140; 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: in-reply-to:in-reply-to:references:references; bh=/3MZ3EZPSoi0R7N60TyY6IPqjbOAkZodewUKbjM+Ogc=; b=JyUvE7gqfGU2mKk+s04hS+FTbJv3hA1kDgr1q8bkOFVOWFBGFarO2Sn/9CFrrZPtY3MnTX o5XlzfJvcJs4b0o+B0yvQ+hIYBmWmxc3+hAxFVYuksLFKCgThexV+hpRDNp3VoNU0zQrwM iF0Qgdzm8dCbWabQ07oYCpiXJs5NrWs= 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-354-npqCDTyLMROZyBk00SwXBQ-1; Wed, 31 Mar 2021 06:55:39 -0400 X-MC-Unique: npqCDTyLMROZyBk00SwXBQ-1 Received: from smtp.corp.redhat.com (int-mx01.intmail.prod.int.phx2.redhat.com [10.5.11.11]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx01.redhat.com (Postfix) with ESMTPS id 3BE8183DD23 for ; Wed, 31 Mar 2021 10:55:38 +0000 (UTC) Received: from sirius.home.kraxel.org (ovpn-114-142.ams2.redhat.com [10.36.114.142]) by smtp.corp.redhat.com (Postfix) with ESMTPS id C04626F135; Wed, 31 Mar 2021 10:55:34 +0000 (UTC) Received: by sirius.home.kraxel.org (Postfix, from userid 1000) id ABEA11800844; Wed, 31 Mar 2021 12:55:32 +0200 (CEST) Date: Wed, 31 Mar 2021 12:55:32 +0200 From: Gerd Hoffmann To: Daniel =?utf-8?B?UC4gQmVycmFuZ8Op?= Subject: Re: [PATCH v3 0/8] [RfC] fix tracing for modules Message-ID: <20210331105532.h5dtris4a6is6wam@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> <20210329094818.q4xtejd6labmb5gr@sirius.home.kraxel.org> MIME-Version: 1.0 In-Reply-To: X-Scanned-By: MIMEDefang 2.79 on 10.5.11.11 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=us-ascii Content-Disposition: inline Received-SPF: pass client-ip=170.10.133.124; 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=0.001, RCVD_IN_MSPIKE_WL=0.001, 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: "Dr. David Alan Gilbert" , Markus Armbruster , Stefan Hajnoczi , qemu-devel@nongnu.org Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" Hi, > > 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? > > Hmm, strange, makes me think we have a bug causing it to not pull in > global functions. Hmm. 5.1.0 fails the same way. 5.2.0 fails in a different way. Seems we had temporary breakage in 5.2.0 (was that the module thing which needed some workaround?). Given 5.1.0 fails too I suspect this is a systemtap change (/me runs fedora 33). Googling didn't found much, other than indicating pid() is used frequently in examples and tutorials. stap-prep asked for kernel-debuginfo, but installing that (huge package with 3.5G(!) installed size) hasn't changed the situation. Guess I only actually need that if I want trace the kernel not userspace? take care, Gerd