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=-8.5 required=3.0 tests=BAYES_00,DKIM_INVALID, DKIM_SIGNED,HEADER_FROM_DIFFERENT_DOMAINS,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 C816EC433E0 for ; Mon, 1 Feb 2021 16:21:44 +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 35AD764DD6 for ; Mon, 1 Feb 2021 16:21:44 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 35AD764DD6 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]:57614 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1l6bxP-0007Lm-4c for qemu-devel@archiver.kernel.org; Mon, 01 Feb 2021 11:21:43 -0500 Received: from eggs.gnu.org ([2001:470:142:3::10]:48218) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1l6brV-0003jM-Em for qemu-devel@nongnu.org; Mon, 01 Feb 2021 11:15:38 -0500 Received: from us-smtp-delivery-124.mimecast.com ([216.205.24.124]:42392) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_CBC_SHA1:256) (Exim 4.90_1) (envelope-from ) id 1l6br9-0003NO-VL for qemu-devel@nongnu.org; Mon, 01 Feb 2021 11:15:29 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1612196113; 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; bh=QVfR0SbRvwLuussdddkdyh1yghwiQHwPZWZmtPF2oIw=; b=JtAA7rT6nGHMFkJzagPBOlJjrrV0o5TQ4GPSmeJHtlyDYjw/Df6vPa+josU2YMxVKt0EvQ eVkbN58v0JgMaLLW2bjz2fXPHBMGxFHYEQ9RGhOEZ0XZ/cW5Rb72eELr4+Q01Y9v7jpDw7 ua1gAUa6yzxNH27+JDgrcvpasQKH+2s= 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-505-MYjYfzD6OFWdCTFnYuMPcg-1; Mon, 01 Feb 2021 11:15:11 -0500 X-MC-Unique: MYjYfzD6OFWdCTFnYuMPcg-1 Received: from smtp.corp.redhat.com (int-mx03.intmail.prod.int.phx2.redhat.com [10.5.11.13]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx01.redhat.com (Postfix) with ESMTPS id 521A259 for ; Mon, 1 Feb 2021 16:15:10 +0000 (UTC) Received: from blackfin.pond.sub.org (ovpn-115-51.ams2.redhat.com [10.36.115.51]) by smtp.corp.redhat.com (Postfix) with ESMTPS id CC2A160D06; Mon, 1 Feb 2021 16:15:05 +0000 (UTC) Received: by blackfin.pond.sub.org (Postfix, from userid 1000) id 40702113865F; Mon, 1 Feb 2021 17:15:04 +0100 (CET) From: Markus Armbruster To: qemu-devel@nongnu.org Subject: [PATCH 0/3] Maximize QMP availability for OOB commands Date: Mon, 1 Feb 2021 17:15:01 +0100 Message-Id: <20210201161504.1976989-1-armbru@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.79 on 10.5.11.13 Authentication-Results: relay.mimecast.com; auth=pass smtp.auth=CUSA124A263 smtp.mailfrom=armbru@redhat.com X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com Content-Transfer-Encoding: 8bit Content-Type: text/plain; charset="US-ASCII" Received-SPF: pass client-ip=216.205.24.124; envelope-from=armbru@redhat.com; helo=us-smtp-delivery-124.mimecast.com X-Spam_score_int: -30 X-Spam_score: -3.1 X-Spam_bar: --- X-Spam_report: (-3.1 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.351, 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_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: kwolf@redhat.com, jsnow@redhat.com, peterx@redhat.com Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" While bisecting a crash bug, I noticed OOB commands can get delayed unduly when a full request queue becomes non-full. Improve that. Related: * [PATCH] docs/interop/qmp-spec: Document the request queue limit Message-Id: <20210127144734.2367693-1-armbru@redhat.com> https://lists.gnu.org/archive/html/qemu-devel/2021-01/msg06931.html * Crash bug report (regression): Message-ID: <87bld7ucor.fsf@dusky.pond.sub.org> https://lists.gnu.org/archive/html/qemu-devel/2021-01/msg07719.html Markus Armbruster (3): qmp: Fix up comments after commit 9ce44e2ce2 qmp: Add more tracepoints qmp: Resume OOB-enabled monitor before processing the request monitor/qmp.c | 44 ++++++++++++++++++++++++++++++++++++-------- monitor/trace-events | 4 ++++ 2 files changed, 40 insertions(+), 8 deletions(-) -- 2.26.2