From patchwork Sun Sep 27 04:55:20 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Zheng Chuan X-Patchwork-Id: 304350 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=-12.8 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH, MAILING_LIST_MULTI, SIGNED_OFF_BY, SPF_HELO_NONE, SPF_PASS, USER_AGENT_GIT 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 CCECEC47426 for ; Sun, 27 Sep 2020 04:46:27 +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 DFC91239D4 for ; Sun, 27 Sep 2020 04:46:25 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org DFC91239D4 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=huawei.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Received: from localhost ([::1]:38366 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1kMOZs-0007ZV-K3 for qemu-devel@archiver.kernel.org; Sun, 27 Sep 2020 00:46:24 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:48070) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1kMOYu-00072y-LN for qemu-devel@nongnu.org; Sun, 27 Sep 2020 00:45:24 -0400 Received: from szxga04-in.huawei.com ([45.249.212.190]:5148 helo=huawei.com) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1kMOYs-0001St-KR for qemu-devel@nongnu.org; Sun, 27 Sep 2020 00:45:24 -0400 Received: from DGGEMS410-HUB.china.huawei.com (unknown [172.30.72.60]) by Forcepoint Email with ESMTP id 44EC45A7CFABD8C1552A; Sun, 27 Sep 2020 12:45:05 +0800 (CST) Received: from huawei.com (10.175.101.6) by DGGEMS410-HUB.china.huawei.com (10.3.19.210) with Microsoft SMTP Server id 14.3.487.0; Sun, 27 Sep 2020 12:44:54 +0800 From: Chuan Zheng To: , , , Subject: [PATCH] migration/dirtyrate: present dirty rate only when querying the rate has completed Date: Sun, 27 Sep 2020 12:55:20 +0800 Message-ID: <1601182520-130450-1-git-send-email-zhengchuan@huawei.com> X-Mailer: git-send-email 1.8.3.1 MIME-Version: 1.0 X-Originating-IP: [10.175.101.6] X-CFilter-Loop: Reflected Received-SPF: pass client-ip=45.249.212.190; envelope-from=zhengchuan@huawei.com; helo=huawei.com X-detected-operating-system: by eggs.gnu.org: First seen = 2020/09/27 00:45:05 X-ACL-Warn: Detected OS = Linux 3.11 and newer [fuzzy] X-Spam_score_int: -41 X-Spam_score: -4.2 X-Spam_bar: ---- X-Spam_report: (-4.2 / 5.0 requ) BAYES_00=-1.9, RCVD_IN_DNSWL_MED=-2.3, RCVD_IN_MSPIKE_H4=0.001, RCVD_IN_MSPIKE_WL=0.001, SPF_HELO_PASS=-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: alex.chen@huawei.com, wanghao232@huawei.com, zhang.zhanghailiang@huawei.com, xiexiangyou@huawei.com, qemu-devel@nongnu.org Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" Make dirty_rate field optional, present dirty rate only when querying the rate has completed. The qmp results is shown as follow: @unstarted: {"return":{"status":"unstarted","start-time":0,"calc-time":0},"id":"libvirt-12"} @measuring: {"return":{"status":"measuring","start-time":0,"calc-time":0},"id":"libvirt-14"} @measured: {"return":{"status":"measured","dirty-rate":4,"start-time":150146,"calc-time":1},"id":"libvirt-15"} Signed-off-by: Chuan Zheng Reviewed-by: David Edmondson --- migration/dirtyrate.c | 3 +-- qapi/migration.json | 9 ++++----- 2 files changed, 5 insertions(+), 7 deletions(-) diff --git a/migration/dirtyrate.c b/migration/dirtyrate.c index 68577ef..9024b0f 100644 --- a/migration/dirtyrate.c +++ b/migration/dirtyrate.c @@ -69,9 +69,8 @@ static struct DirtyRateInfo *query_dirty_rate_info(void) struct DirtyRateInfo *info = g_malloc0(sizeof(DirtyRateInfo)); if (qatomic_read(&CalculatingState) == DIRTY_RATE_STATUS_MEASURED) { + info->has_dirty_rate = true; info->dirty_rate = dirty_rate; - } else { - info->dirty_rate = -1; } info->status = CalculatingState; diff --git a/qapi/migration.json b/qapi/migration.json index ce2216c..6e428f7 100644 --- a/qapi/migration.json +++ b/qapi/migration.json @@ -1743,10 +1743,9 @@ # # Information about current dirty page rate of vm. # -# @dirty-rate: @dirtyrate describing the dirty page rate of vm -# in units of MB/s. -# If this field returns '-1', it means querying has not -# yet started or completed. +# @dirty-rate: dirty-rate describing the dirty page rate of vm +# in units of MB/s, present only when querying the +# rate has completed. # # @status: status containing dirtyrate query status includes # 'unstarted' or 'measuring' or 'measured' @@ -1759,7 +1758,7 @@ # ## { 'struct': 'DirtyRateInfo', - 'data': {'dirty-rate': 'int64', + 'data': {'*dirty-rate': 'int64', 'status': 'DirtyRateStatus', 'start-time': 'int64', 'calc-time': 'int64'} }