From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from list by lists.gnu.org with archive (Exim 4.90_1) id 1oSz32-0005Ot-MT for mharc-qemu-trivial@gnu.org; Tue, 30 Aug 2022 07:04:48 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:52944) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1oSz31-0005OL-2x for qemu-trivial@nongnu.org; Tue, 30 Aug 2022 07:04:47 -0400 Received: from us-smtp-delivery-124.mimecast.com ([170.10.129.124]:33508) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1oSz2z-0002KE-8b for qemu-trivial@nongnu.org; Tue, 30 Aug 2022 07:04:46 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1661857484; 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=vBAYIK2eRvFa6M051YT8D9eY9GjloJuIA0ppfGTmuKc=; b=DuuVDK5cQ1S/t7alE0si7MFN9hYgTQwhj3EcK9GcC5Qmpwb/cdS+6h3/oK0w42DLrPpj6B GZ+s4cwQPtzCyshcnqv9/AwfHmd2/07r+YkTvstn4U4tIVXvDggyRNGPXn7S08I5V1yn2Q 7vUSHsjOLgNWrcoQTrGYfWcu5uoVO3s= Received: from mimecast-mx02.redhat.com (mimecast-mx02.redhat.com [66.187.233.88]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id us-mta-137-4vDn-WsjNISwY04_e4XMcw-1; Tue, 30 Aug 2022 07:04:41 -0400 X-MC-Unique: 4vDn-WsjNISwY04_e4XMcw-1 Received: from smtp.corp.redhat.com (int-mx10.intmail.prod.int.rdu2.redhat.com [10.11.54.10]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx02.redhat.com (Postfix) with ESMTPS id D5645811E76; Tue, 30 Aug 2022 11:04:40 +0000 (UTC) Received: from blackfin.pond.sub.org (unknown [10.39.193.166]) by smtp.corp.redhat.com (Postfix) with ESMTPS id ACA76492C3B; Tue, 30 Aug 2022 11:04:40 +0000 (UTC) Received: by blackfin.pond.sub.org (Postfix, from userid 1000) id 663F321E6900; Tue, 30 Aug 2022 13:04:39 +0200 (CEST) From: Markus Armbruster To: Dongli Zhang Cc: qemu-devel@nongnu.org, qemu-trivial@nongnu.org, dgilbert@redhat.com, joe.jin@oracle.com, Paolo Bonzini Subject: Re: [PATCH v2 1/1] monitor/hmp: print trace as option in help for log command References: <20220829170316.3053-1-dongli.zhang@oracle.com> Date: Tue, 30 Aug 2022 13:04:39 +0200 In-Reply-To: <20220829170316.3053-1-dongli.zhang@oracle.com> (Dongli Zhang's message of "Mon, 29 Aug 2022 10:03:16 -0700") Message-ID: <87mtbmhu0o.fsf@pond.sub.org> User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/27.2 (gnu/linux) MIME-Version: 1.0 Content-Type: text/plain X-Scanned-By: MIMEDefang 2.85 on 10.11.54.10 Received-SPF: pass client-ip=170.10.129.124; envelope-from=armbru@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, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-trivial@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 30 Aug 2022 11:04:47 -0000 Dongli Zhang writes: > The below is printed when printing help information in qemu-system-x86_64 > command line, and when CONFIG_TRACE_LOG is enabled: > > $ qemu-system-x86_64 -d help > ... ... > trace:PATTERN enable trace events > > Use "-d trace:help" to get a list of trace events. > > However, they are not printed in hmp "help log" command. This leaves me guessing what exactly the patch tries to do. > Cc: Joe Jin > Signed-off-by: Dongli Zhang > --- > Changed since v1: > - change format for "none" as well. > > monitor/hmp.c | 9 +++++++-- > 1 file changed, 7 insertions(+), 2 deletions(-) > > diff --git a/monitor/hmp.c b/monitor/hmp.c > index 15ca047..467fc84 100644 > --- a/monitor/hmp.c > +++ b/monitor/hmp.c > @@ -285,10 +285,15 @@ void help_cmd(Monitor *mon, const char *name) > if (!strcmp(name, "log")) { > const QEMULogItem *item; > monitor_printf(mon, "Log items (comma separated):\n"); > - monitor_printf(mon, "%-10s %s\n", "none", "remove all logs"); > + monitor_printf(mon, "%-15s %s\n", "none", "remove all logs"); > for (item = qemu_log_items; item->mask != 0; item++) { > - monitor_printf(mon, "%-10s %s\n", item->name, item->help); > + monitor_printf(mon, "%-15s %s\n", item->name, item->help); > } > +#ifdef CONFIG_TRACE_LOG > + monitor_printf(mon, "trace:PATTERN enable trace events\n"); > + monitor_printf(mon, "\nUse \"info trace-events\" to get a list of " > + "trace events.\n\n"); Aha: it fixes help to show "log trace:PATTERN". Was that forgotten in Paolo's commit c84ea00dc2 'log: add "-d trace:PATTERN"'? "info trace-events", hmmm... it shows trace events and their state. "log trace:help" also lists them, less their state, and in opposite order. Why do we need both? What about showing them in alphabetical order? > +#endif > return; > }