From patchwork Sat Aug 29 02:52:52 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Zheng Chuan X-Patchwork-Id: 275178 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 48CC4C433E6 for ; Sat, 29 Aug 2020 02:48:05 +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 17E6120838 for ; Sat, 29 Aug 2020 02:48:05 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 17E6120838 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]:56428 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1kBquS-0005w3-Aa for qemu-devel@archiver.kernel.org; Fri, 28 Aug 2020 22:48:04 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:49666) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1kBqod-0003hz-Vm for qemu-devel@nongnu.org; Fri, 28 Aug 2020 22:42:04 -0400 Received: from szxga04-in.huawei.com ([45.249.212.190]:4673 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 1kBqoY-00021y-Rj for qemu-devel@nongnu.org; Fri, 28 Aug 2020 22:42:03 -0400 Received: from DGGEMS413-HUB.china.huawei.com (unknown [172.30.72.58]) by Forcepoint Email with ESMTP id 7FB4033952FFD65774C1; Sat, 29 Aug 2020 10:41:48 +0800 (CST) Received: from huawei.com (10.175.101.6) by DGGEMS413-HUB.china.huawei.com (10.3.19.213) with Microsoft SMTP Server id 14.3.487.0; Sat, 29 Aug 2020 10:41:38 +0800 From: Chuan Zheng To: , , , , Subject: [PATCH v6 07/12] migration/dirtyrate: Compare page hash results for recorded sampled page Date: Sat, 29 Aug 2020 10:52:52 +0800 Message-ID: <1598669577-76914-8-git-send-email-zhengchuan@huawei.com> X-Mailer: git-send-email 1.8.3.1 In-Reply-To: <1598669577-76914-1-git-send-email-zhengchuan@huawei.com> References: <1598669577-76914-1-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 = 2020/08/28 22:41:44 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, ann.zhuangyanying@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" Compare page hash results for recorded sampled page. Signed-off-by: Chuan Zheng Signed-off-by: YanYing Zhuang --- migration/dirtyrate.c | 63 +++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 63 insertions(+) diff --git a/migration/dirtyrate.c b/migration/dirtyrate.c index f4967fd..9cc2cbb 100644 --- a/migration/dirtyrate.c +++ b/migration/dirtyrate.c @@ -193,6 +193,69 @@ static int record_ramblock_hash_info(struct RamblockDirtyInfo **block_dinfo, return 0; } +static void calc_page_dirty_rate(struct RamblockDirtyInfo *info) +{ + uint32_t crc; + int i; + + for (i = 0; i < info->sample_pages_count; i++) { + crc = get_ramblock_vfn_hash(info, info->sample_page_vfn[i]); + if (crc != info->hash_result[i]) { + info->sample_dirty_count++; + } + } +} + +static struct RamblockDirtyInfo * +find_page_matched(RAMBlock *block, int count, + struct RamblockDirtyInfo *infos) +{ + int i; + struct RamblockDirtyInfo *matched; + + for (i = 0; i < count; i++) { + if (!strcmp(infos[i].idstr, qemu_ram_get_idstr(block))) { + break; + } + } + + if (i == count) { + return NULL; + } + + if (infos[i].ramblock_addr != qemu_ram_get_host_addr(block) || + infos[i].ramblock_pages != + (qemu_ram_get_used_length(block) >> TARGET_PAGE_BITS)) { + return NULL; + } + + matched = &infos[i]; + + return matched; +} + +static int compare_page_hash_info(struct RamblockDirtyInfo *info, + int block_index) +{ + struct RamblockDirtyInfo *block_dinfo = NULL; + RAMBlock *block = NULL; + + RAMBLOCK_FOREACH_MIGRATABLE(block) { + block_dinfo = find_page_matched(block, block_index + 1, info); + if (block_dinfo == NULL) { + continue; + } + calc_page_dirty_rate(block_dinfo); + update_dirtyrate_stat(block_dinfo); + } + + if (!DirtyStat.total_sample_count) { + return -1; + } + + return 0; +} + static void calculate_dirtyrate(struct DirtyRateConfig config) { /* todo */