From patchwork Wed Sep 16 06:22:05 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Zheng Chuan X-Patchwork-Id: 11778987 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 214EF112E for ; Wed, 16 Sep 2020 06:17:53 +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 D4F2121D7D for ; Wed, 16 Sep 2020 06:17:52 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org D4F2121D7D 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]:51762 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1kIQlL-0006gS-OV for patchwork-qemu-devel@patchwork.kernel.org; Wed, 16 Sep 2020 02:17:51 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:58876) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1kIQfM-0006og-Bx for qemu-devel@nongnu.org; Wed, 16 Sep 2020 02:11:40 -0400 Received: from szxga07-in.huawei.com ([45.249.212.35]:52400 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 1kIQfH-0005Xq-4G for qemu-devel@nongnu.org; Wed, 16 Sep 2020 02:11:40 -0400 Received: from DGGEMS409-HUB.china.huawei.com (unknown [172.30.72.60]) by Forcepoint Email with ESMTP id 1C27AC7149DBE9E03902; Wed, 16 Sep 2020 14:11:30 +0800 (CST) Received: from huawei.com (10.175.101.6) by DGGEMS409-HUB.china.huawei.com (10.3.19.209) with Microsoft SMTP Server id 14.3.487.0; Wed, 16 Sep 2020 14:11:20 +0800 From: Chuan Zheng To: , , , Subject: [PATCH v10 10/12] migration/dirtyrate: Implement calculate_dirtyrate() function Date: Wed, 16 Sep 2020 14:22:05 +0800 Message-ID: <1600237327-33618-11-git-send-email-zhengchuan@huawei.com> X-Mailer: git-send-email 1.8.3.1 In-Reply-To: <1600237327-33618-1-git-send-email-zhengchuan@huawei.com> References: <1600237327-33618-1-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=45.249.212.35; envelope-from=zhengchuan@huawei.com; helo=huawei.com X-detected-operating-system: by eggs.gnu.org: First seen = 2020/09/16 02:11:31 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: zhengchuan@huawei.com, zhang.zhanghailiang@huawei.com, liq3ea@gmail.com, qemu-devel@nongnu.org, xiexiangyou@huawei.com, alex.chen@huawei.com Errors-To: qemu-devel-bounces+patchwork-qemu-devel=patchwork.kernel.org@nongnu.org Sender: "Qemu-devel" Implement calculate_dirtyrate() function. Signed-off-by: Chuan Zheng Signed-off-by: YanYing Zhuang Reviewed-by: Dr. David Alan Gilbert Reviewed-by: Li Qiang --- migration/dirtyrate.c | 45 +++++++++++++++++++++++++++++++++++++++++++-- 1 file changed, 43 insertions(+), 2 deletions(-) diff --git a/migration/dirtyrate.c b/migration/dirtyrate.c index ef77483..2a1a7fa 100644 --- a/migration/dirtyrate.c +++ b/migration/dirtyrate.c @@ -162,6 +162,21 @@ static void get_ramblock_dirty_info(RAMBlock *block, strcpy(info->idstr, qemu_ram_get_idstr(block)); } +static void free_ramblock_dirty_info(struct RamblockDirtyInfo *infos, int count) +{ + int i; + + if (!infos) { + return; + } + + for (i = 0; i < count; i++) { + g_free(infos[i].sample_page_vfn); + g_free(infos[i].hash_result); + } + g_free(infos); +} + static bool skip_sample_ramblock(RAMBlock *block) { /* @@ -287,8 +302,34 @@ static bool compare_page_hash_info(struct RamblockDirtyInfo *info, static void calculate_dirtyrate(struct DirtyRateConfig config) { - /* todo */ - return; + struct RamblockDirtyInfo *block_dinfo = NULL; + int block_count = 0; + int64_t msec = 0; + 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)) { + goto out; + } + rcu_read_unlock(); + + msec = config.sample_period_seconds * 1000; + msec = set_sample_page_period(msec, initial_time); + + rcu_read_lock(); + if (!compare_page_hash_info(block_dinfo, block_count)) { + goto out; + } + + update_dirtyrate(msec); + +out: + rcu_read_unlock(); + free_ramblock_dirty_info(block_dinfo, block_count); + rcu_unregister_thread(); } void *get_dirtyrate_thread(void *arg)