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bh=4d/q8CArbXwjDyOTymBG33h/R3c1p79JWHLpeX64kxM=; b=Lm5iOfNBqOVIK8WUeCoYadz8q1pyXzsKLWgxJTb5wnDFv7W0XmIcMCvujg2oI3gwlHfR5Y TjPVapiNIG/Ozd5PbZ6l0MKGcqN1GVsxUXPHifZOsuhxxLSeheUnnhnP3XnT1OBCaisewu VySsMa7XS/uDtXfwpAfsYezxKrpgIow= 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-36-SUB1YWOdOCOA6f1yw1AriQ-1; Mon, 29 Mar 2021 05:23:56 -0400 X-MC-Unique: SUB1YWOdOCOA6f1yw1AriQ-1 Received: from smtp.corp.redhat.com (int-mx05.intmail.prod.int.phx2.redhat.com [10.5.11.15]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx01.redhat.com (Postfix) with ESMTPS id 25BA1190A7A5 for ; Mon, 29 Mar 2021 09:23:55 +0000 (UTC) Received: from redhat.com (ovpn-114-228.ams2.redhat.com [10.36.114.228]) by smtp.corp.redhat.com (Postfix) with ESMTPS id 4DE3963633; Mon, 29 Mar 2021 09:23:45 +0000 (UTC) Date: Mon, 29 Mar 2021 10:23:42 +0100 From: Daniel =?utf-8?B?UC4gQmVycmFuZ8Op?= To: Gerd Hoffmann Subject: Re: [PATCH v3 0/8] [RfC] fix tracing for modules Message-ID: 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: <20210326124700.taujcpo2xqbn2pzj@sirius.home.kraxel.org> User-Agent: Mutt/2.0.5 (2021-01-21) X-Scanned-By: MIMEDefang 2.79 on 10.5.11.15 Authentication-Results: relay.mimecast.com; auth=pass smtp.auth=CUSA124A263 smtp.mailfrom=berrange@redhat.com X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com Content-Type: text/plain; charset=utf-8 Content-Disposition: inline Received-SPF: pass client-ip=170.10.133.124; envelope-from=berrange@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: , Reply-To: Daniel =?utf-8?B?UC4gQmVycmFuZ8Op?= 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 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. > > qxl.destroy_primary(int qid) "%d" > > qxl.enter_vga_mode(int qid) "%d" > > qxl.exit_vga_mode(int qid) "%d" > > > > this would be backwards compatible, as we can turn the "." back into > > a "_" for all existing trace backends, except stp. > > Hmm, not sure I like this inconsistency. I think names should be the > same no matter which trace backend is used. Regards, Daniel -- |: https://berrange.com -o- https://www.flickr.com/photos/dberrange :| |: https://libvirt.org -o- https://fstop138.berrange.com :| |: https://entangle-photo.org -o- https://www.instagram.com/dberrange :|