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=-13.7 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED 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 B58FEC433DB for ; Mon, 1 Feb 2021 16:07:40 +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 F389C64E8F for ; Mon, 1 Feb 2021 16:07:39 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org F389C64E8F Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=eik.bme.hu Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Received: from localhost ([::1]:35174 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1l6bjn-0005SP-3T for qemu-devel@archiver.kernel.org; Mon, 01 Feb 2021 11:07:39 -0500 Received: from eggs.gnu.org ([2001:470:142:3::10]:45942) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1l6bi0-0003Qi-G1; Mon, 01 Feb 2021 11:05:49 -0500 Received: from zero.eik.bme.hu ([2001:738:2001:2001::2001]:13367) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1l6bhx-0006hl-5p; Mon, 01 Feb 2021 11:05:47 -0500 Received: from zero.eik.bme.hu (blah.eik.bme.hu [152.66.115.182]) by localhost (Postfix) with SMTP id 9B6A37462DB; Mon, 1 Feb 2021 17:05:38 +0100 (CET) Received: by zero.eik.bme.hu (Postfix, from userid 432) id 6646F7462BD; Mon, 1 Feb 2021 17:05:38 +0100 (CET) Received: from localhost (localhost [127.0.0.1]) by zero.eik.bme.hu (Postfix) with ESMTP id 644B67456B4; Mon, 1 Feb 2021 17:05:38 +0100 (CET) Date: Mon, 1 Feb 2021 17:05:38 +0100 (CET) From: BALATON Zoltan To: Stefan Hajnoczi Subject: Re: [PULL 10/11] trace: document how to specify multiple --trace patterns In-Reply-To: <20210201154703.180022-11-stefanha@redhat.com> Message-ID: References: <20210201154703.180022-1-stefanha@redhat.com> <20210201154703.180022-11-stefanha@redhat.com> MIME-Version: 1.0 Content-Type: multipart/mixed; boundary="3866299591-590698333-1612195538=:91053" Received-SPF: pass client-ip=2001:738:2001:2001::2001; envelope-from=balaton@eik.bme.hu; helo=zero.eik.bme.hu X-Spam_score_int: -18 X-Spam_score: -1.9 X-Spam_bar: - X-Spam_report: (-1.9 / 5.0 requ) BAYES_00=-1.9, 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: Peter Maydell , Eduardo Habkost , qemu-block@nongnu.org, qemu-devel@nongnu.org, Markus Armbruster , Cleber Rosa , Paolo Bonzini , =?ISO-8859-15?Q?Philippe_Mathieu-Daud=E9?= Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" This message is in MIME format. The first part should be readable text, while the remaining parts are likely unreadable without MIME-aware tools. --3866299591-590698333-1612195538=:91053 Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 8BIT On Mon, 1 Feb 2021, Stefan Hajnoczi wrote: > It is possible to repeat the --trace option to specify multiple > patterns. This may be preferrable to users who do not want to create a > file with a list of patterns. > > Suggested-by: BALATON Zoltan > Signed-off-by: Stefan Hajnoczi > Reviewed-by: Philippe Mathieu-Daudé > Message-id: 20210112165859.225534-2-stefanha@redhat.com > Signed-off-by: Stefan Hajnoczi > --- > docs/devel/tracing.rst | 9 +++++++-- > 1 file changed, 7 insertions(+), 2 deletions(-) > > diff --git a/docs/devel/tracing.rst b/docs/devel/tracing.rst > index af395e957d..e8f9b82c5e 100644 > --- a/docs/devel/tracing.rst > +++ b/docs/devel/tracing.rst > @@ -22,10 +22,15 @@ events:: > This output comes from the "log" trace backend that is enabled by default when > ``./configure --enable-trace-backends=BACKENDS`` was not explicitly specified. > > -More than one trace event pattern can be specified by providing a file > -instead:: > +Multiple patterns can be specified by repeating the ``--trace`` option:: > + > + $ qemu --trace "kvm_*" --trace "virtio_*" ... Does that actually work? I've always used -trace enable="pattern1" -trace enable="pattern2" Not sure if omitting enable= is the same. Regards, BALATON Zoltan > + > +When patterns are used frequently it is more convenient to store them in a > +file to avoid long command-line options:: > > $ echo "memory_region_ops_*" >/tmp/events > + $ echo "kvm_*" >>/tmp/events > $ qemu --trace events=/tmp/events ... > > Trace events > -- > 2.29.2 --3866299591-590698333-1612195538=:91053--