From patchwork Tue Sep 29 03:42:17 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Zheng Chuan X-Patchwork-Id: 11804929 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 0EC3E1580 for ; Tue, 29 Sep 2020 03:33:57 +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 7ACCD208D5 for ; Tue, 29 Sep 2020 03:33:56 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 7ACCD208D5 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+patchwork-qemu-devel=patchwork.kernel.org@nongnu.org Received: from localhost ([::1]:57138 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1kN6Op-0006F8-Az for patchwork-qemu-devel@patchwork.kernel.org; Mon, 28 Sep 2020 23:33:55 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:33070) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1kN6N9-0004SS-St for qemu-devel@nongnu.org; Mon, 28 Sep 2020 23:32:11 -0400 Received: from szxga04-in.huawei.com ([45.249.212.190]:5152 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 1kN6N7-0001h1-JR for qemu-devel@nongnu.org; Mon, 28 Sep 2020 23:32:11 -0400 Received: from DGGEMS406-HUB.china.huawei.com (unknown [172.30.72.58]) by Forcepoint Email with ESMTP id F3CB7CB6FDBEFCDFBD6E; Tue, 29 Sep 2020 11:32:04 +0800 (CST) Received: from huawei.com (10.175.101.6) by DGGEMS406-HUB.china.huawei.com (10.3.19.206) with Microsoft SMTP Server id 14.3.487.0; Tue, 29 Sep 2020 11:31:56 +0800 From: Chuan Zheng To: , , , Subject: [PATCH v2 1/2] migration/dirtyrate: record start_time and calc_time while at the measuring state Date: Tue, 29 Sep 2020 11:42:17 +0800 Message-ID: <1601350938-128320-2-git-send-email-zhengchuan@huawei.com> X-Mailer: git-send-email 1.8.3.1 In-Reply-To: <1601350938-128320-1-git-send-email-zhengchuan@huawei.com> References: <1601350938-128320-1-git-send-email-zhengchuan@huawei.com> 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 = 2020/09/28 23:32:05 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, zhang.zhanghailiang@huawei.com, qemu-devel@nongnu.org, xiexiangyou@huawei.com, david.edmondson@oracle.com, wanghao232@huawei.com Errors-To: qemu-devel-bounces+patchwork-qemu-devel=patchwork.kernel.org@nongnu.org Sender: "Qemu-devel" Querying could include both the start-time and the calc-time while at the measuring state, allowing a caller to determine when they should expect to come back looking for a result. Signed-off-by: Chuan Zheng Reviewed-by: David Edmondson --- migration/dirtyrate.c | 13 +++++++++---- 1 file changed, 9 insertions(+), 4 deletions(-) diff --git a/migration/dirtyrate.c b/migration/dirtyrate.c index 68577ef..40e41e7 100644 --- a/migration/dirtyrate.c +++ b/migration/dirtyrate.c @@ -83,14 +83,14 @@ static struct DirtyRateInfo *query_dirty_rate_info(void) return info; } -static void reset_dirtyrate_stat(void) +static void init_dirtyrate_stat(int64_t start_time, int64_t calc_time) { DirtyStat.total_dirty_samples = 0; DirtyStat.total_sample_count = 0; DirtyStat.total_block_mem_MB = 0; DirtyStat.dirty_rate = -1; - DirtyStat.start_time = 0; - DirtyStat.calc_time = 0; + DirtyStat.start_time = start_time; + DirtyStat.calc_time = calc_time; } static void update_dirtyrate_stat(struct RamblockDirtyInfo *info) @@ -335,7 +335,6 @@ static void calculate_dirtyrate(struct DirtyRateConfig config) int64_t initial_time; rcu_register_thread(); - reset_dirtyrate_stat(); rcu_read_lock(); initial_time = qemu_clock_get_ms(QEMU_CLOCK_REALTIME); if (!record_ramblock_hash_info(&block_dinfo, config, &block_count)) { @@ -365,6 +364,8 @@ void *get_dirtyrate_thread(void *arg) { struct DirtyRateConfig config = *(struct DirtyRateConfig *)arg; int ret; + int64_t start_time; + int64_t calc_time; ret = dirtyrate_set_state(&CalculatingState, DIRTY_RATE_STATUS_UNSTARTED, DIRTY_RATE_STATUS_MEASURING); @@ -373,6 +374,10 @@ void *get_dirtyrate_thread(void *arg) return NULL; } + start_time = qemu_clock_get_ms(QEMU_CLOCK_REALTIME) / 1000; + calc_time = config.sample_period_seconds; + init_dirtyrate_stat(start_time, calc_time); + calculate_dirtyrate(config); ret = dirtyrate_set_state(&CalculatingState, DIRTY_RATE_STATUS_MEASURING,