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=-15.3 required=3.0 tests=BAYES_00,DKIM_INVALID, DKIM_SIGNED,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,NICE_REPLY_A,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED, USER_AGENT_SANE_1 autolearn=ham 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 ED78CC433E0 for ; Wed, 6 Jan 2021 13:49:20 +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 4391322BEA for ; Wed, 6 Jan 2021 13:49:19 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 4391322BEA 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]:43986 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1kx9Be-0004L7-TJ for qemu-devel@archiver.kernel.org; Wed, 06 Jan 2021 08:49:18 -0500 Received: from eggs.gnu.org ([2001:470:142:3::10]:41748) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1kx9Al-0003sP-20 for qemu-devel@nongnu.org; Wed, 06 Jan 2021 08:48:23 -0500 Received: from us-smtp-delivery-124.mimecast.com ([216.205.24.124]:24933) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_CBC_SHA1:256) (Exim 4.90_1) (envelope-from ) id 1kx9Ag-000754-NB for qemu-devel@nongnu.org; Wed, 06 Jan 2021 08:48:22 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1609940897; 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=DzAPtJOpJDA9oHdwaF1Ke5kcPEF7wuhLQ8M2tKmCqiI=; b=BtmnuhhPCJcwV7B2HDQRxN33m4nWwixdYiVGK1ACM5/i/21H0regViKaT0Y0Lr1oQfKob+ 1+FUQF+9vMDsslK/hH/P7AAsYyLDp9JjvYOeiv7w/EAnRBC2o6B5xN6x9Xru2eTvTs+9G6 AGSvWvOLcoKNw+gjl/BRVKtmQFpsRfM= 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-165-h6tjf8PNPieLxvLW3Ryt4A-1; Wed, 06 Jan 2021 08:48:16 -0500 X-MC-Unique: h6tjf8PNPieLxvLW3Ryt4A-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 11504801AA7 for ; Wed, 6 Jan 2021 13:48:15 +0000 (UTC) Received: from [10.36.113.101] (ovpn-113-101.ams2.redhat.com [10.36.113.101]) by smtp.corp.redhat.com (Postfix) with ESMTP id 44CFF5D6A1; Wed, 6 Jan 2021 13:48:10 +0000 (UTC) Subject: Re: [PATCH v2] tracetool: also strip %l and %ll from systemtap format strings To: =?UTF-8?Q?Daniel_P=2e_Berrang=c3=a9?= , qemu-devel@nongnu.org References: <20210106130239.1004729-1-berrange@redhat.com> From: Laurent Vivier Message-ID: <4e2649d6-9707-bae8-f908-f94aaed683e0@redhat.com> Date: Wed, 6 Jan 2021 14:48:09 +0100 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:78.0) Gecko/20100101 Thunderbird/78.6.0 MIME-Version: 1.0 In-Reply-To: <20210106130239.1004729-1-berrange@redhat.com> X-Scanned-By: MIMEDefang 2.79 on 10.5.11.15 Authentication-Results: relay.mimecast.com; auth=pass smtp.auth=CUSA124A263 smtp.mailfrom=lvivier@redhat.com X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: 8bit Received-SPF: pass client-ip=216.205.24.124; envelope-from=lvivier@redhat.com; helo=us-smtp-delivery-124.mimecast.com X-Spam_score_int: -32 X-Spam_score: -3.3 X-Spam_bar: --- X-Spam_report: (-3.3 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.252, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, NICE_REPLY_A=-0.249, RCVD_IN_DNSWL_LOW=-0.7, RCVD_IN_MSPIKE_H3=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: William Cohen , Stefan Hajnoczi Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" On 06/01/2021 14:02, Daniel P. Berrangé wrote: > All variables are 64-bit and so %l / %ll are not required, and the > latter is actually invalid: > > $ sudo stap -e 'probe begin{printf ("BEGIN")}' -I . > parse error: invalid or missing conversion specifier > saw: operator ',' at ./qemu-system-x86_64-log.stp:15118:101 > source: printf("%d@%d vhost_vdpa_set_log_base dev: %p base: 0x%x size: %llu > refcnt: %d fd: %d log: %p\n", pid(), gettimeofday_ns(), dev, base, size, refcnt, fd, log) > > ^ > > Signed-off-by: Daniel P. Berrangé > --- > scripts/tracetool/format/log_stap.py | 7 ++++++- > 1 file changed, 6 insertions(+), 1 deletion(-) > > In v2: > > - Change existing logic that stripped %z to handle %l/%ll too > > diff --git a/scripts/tracetool/format/log_stap.py b/scripts/tracetool/format/log_stap.py > index b486beb672..fac911a0f4 100644 > --- a/scripts/tracetool/format/log_stap.py > +++ b/scripts/tracetool/format/log_stap.py > @@ -77,7 +77,12 @@ def c_fmt_to_stap(fmt): > elif state == STATE_LITERAL: > bits.append(literal) > > - fmt = re.sub("%(\d*)z(x|u|d)", "%\\1\\2", "".join(bits)) > + # All variables in systemtap are 64-bit in size > + # The "%l" integer size qualifier is thus redundant > + # and "%ll" is not valid at all. Simiarly the size_t > + # based "%z" size qualifier is not valid. We just > + # strip all size qualifiers for sanity. > + fmt = re.sub("%(\d*)(l+|z)(x|u|d)", "%\\1\\3", "".join(bits)) > return fmt > > def generate(events, backend, group): > Reviewed-by: Laurent Vivier Tested-by: Laurent Vivier