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=-13.0 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=unavailable 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 CFC2FC433DF for ; Sat, 25 Jul 2020 03:02:21 +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 A470D206EB for ; Sat, 25 Jul 2020 03:02:21 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org A470D206EB 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]:50216 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1jzAS4-0006wT-UN for qemu-devel@archiver.kernel.org; Fri, 24 Jul 2020 23:02:20 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:59646) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1jzAPW-00028M-Fq for qemu-devel@nongnu.org; Fri, 24 Jul 2020 22:59:42 -0400 Received: from szxga04-in.huawei.com ([45.249.212.190]:4158 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 1jzAPR-0000l9-3P for qemu-devel@nongnu.org; Fri, 24 Jul 2020 22:59:42 -0400 Received: from DGGEMS408-HUB.china.huawei.com (unknown [172.30.72.60]) by Forcepoint Email with ESMTP id 401B5539D792B5385680; Sat, 25 Jul 2020 10:59:33 +0800 (CST) Received: from huawei.com (10.175.101.6) by DGGEMS408-HUB.china.huawei.com (10.3.19.208) with Microsoft SMTP Server id 14.3.487.0; Sat, 25 Jul 2020 10:59:23 +0800 From: Chuan Zheng To: , Subject: [RFC PATCH 5/8] migration/dirtyrate: Compare hash results for recorded ramblock Date: Sat, 25 Jul 2020 11:11:06 +0800 Message-ID: <1595646669-109310-6-git-send-email-zhengchuan@huawei.com> X-Mailer: git-send-email 1.8.3.1 In-Reply-To: <1595646669-109310-1-git-send-email-zhengchuan@huawei.com> References: <1595646669-109310-1-git-send-email-zhengchuan@huawei.com> MIME-Version: 1.0 Content-Type: text/plain 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 = 2020/07/24 22:59:33 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=-0.01, RCVD_IN_MSPIKE_WL=-0.01, 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: zhang.zhanghailiang@huawei.com, linyilu@huawei.com, qemu-devel@nongnu.org, alex.chen@huawei.com, ann.zhuangyanying@huawei.com, fangying1@huawei.com Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" From: Zheng Chuan Compare hash results for recorded ramblock. Signed-off-by: Zheng Chuan Signed-off-by: YanYing Zhang --- migration/dirtyrate.c | 77 +++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 77 insertions(+) diff --git a/migration/dirtyrate.c b/migration/dirtyrate.c index 45cfc91..7badc53 100644 --- a/migration/dirtyrate.c +++ b/migration/dirtyrate.c @@ -202,6 +202,83 @@ static int record_block_hash_info(struct dirtyrate_config config, return 0; } +static int cal_block_dirty_rate(struct block_dirty_info *info) +{ + uint8_t *md = NULL; + size_t hash_len; + int i; + int ret = 0; + + hash_len = qcrypto_hash_digest_len(QCRYPTO_HASH_ALG_MD5); + md = g_new0(uint8_t, hash_len); + + for (i = 0; i < info->sample_pages_count; i++) { + ret = get_block_vfn_hash(info, info->sample_page_vfn[i], &md, &hash_len); + if (ret < 0) { + goto out; + } + + if (memcmp(md, info->hash_result + i * hash_len, hash_len) != 0) { + info->sample_dirty_count++; + } + } + +out: + g_free(md); + return ret; +} + +static bool find_block_matched(RAMBlock *block, struct block_dirty_info *infos, + int count, struct block_dirty_info **matched) +{ + int i; + + for (i = 0; i < count; i++) { + if (!strcmp(infos[i].idstr, qemu_ram_get_idstr(block))) { + break; + } + } + + if (i == count) { + return false; + } + + if (infos[i].block_addr != qemu_ram_get_host_addr(block) || + infos[i].block_pages != + (qemu_ram_get_used_length(block) >> DIRTYRATE_PAGE_SIZE_SHIFT)) { + return false; + } + + *matched = &infos[i]; + return true; +} + +static int compare_block_hash_info(struct block_dirty_info *info, int block_index) +{ + struct block_dirty_info *block_dinfo = NULL; + RAMBlock *block = NULL; + + RAMBLOCK_FOREACH_MIGRATABLE(block) { + if (ram_block_skip(block) < 0) { + continue; + } + block_dinfo = NULL; + if (!find_block_matched(block, info, block_index + 1, &block_dinfo)) { + continue; + } + if (cal_block_dirty_rate(block_dinfo) < 0) { + return -1; + } + update_dirtyrate_stat(block_dinfo); + } + if (!dirty_stat.total_sample_count) { + return -1; + } + + return 0; +} + + static void calculate_dirtyrate(struct dirtyrate_config config, int64_t time) { /* todo */ -- 1.8.3.1