From patchwork Wed Sep 9 14:18:11 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Zheng Chuan X-Patchwork-Id: 305805 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=-12.7 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=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 EF73DC43461 for ; Wed, 9 Sep 2020 14:12:33 +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 A781F221F0 for ; Wed, 9 Sep 2020 14:12:33 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org A781F221F0 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]:44438 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1kG0ps-0007er-KC for qemu-devel@archiver.kernel.org; Wed, 09 Sep 2020 10:12:32 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:44418) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1kG0lN-0000a7-9U for qemu-devel@nongnu.org; Wed, 09 Sep 2020 10:07:53 -0400 Received: from szxga05-in.huawei.com ([45.249.212.191]:4732 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 1kG0lL-0001iu-0a for qemu-devel@nongnu.org; Wed, 09 Sep 2020 10:07:52 -0400 Received: from DGGEMS404-HUB.china.huawei.com (unknown [172.30.72.60]) by Forcepoint Email with ESMTP id 8B2F864DD4BB27B7D6AC; Wed, 9 Sep 2020 22:07:37 +0800 (CST) Received: from huawei.com (10.175.101.6) by DGGEMS404-HUB.china.huawei.com (10.3.19.204) with Microsoft SMTP Server id 14.3.487.0; Wed, 9 Sep 2020 22:07:29 +0800 From: Chuan Zheng To: , , , , Subject: [PATCH v7 07/12] migration/dirtyrate: Compare page hash results for recorded sampled page Date: Wed, 9 Sep 2020 22:18:11 +0800 Message-ID: <1599661096-127913-8-git-send-email-zhengchuan@huawei.com> X-Mailer: git-send-email 1.8.3.1 In-Reply-To: <1599661096-127913-1-git-send-email-zhengchuan@huawei.com> References: <1599661096-127913-1-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=45.249.212.191; envelope-from=zhengchuan@huawei.com; helo=huawei.com X-detected-operating-system: by eggs.gnu.org: First seen = 2020/09/09 10:07:33 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=0.001, 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 bc87269..f5987d8 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 == 0) { + return -1; + } + + return 0; +} + static void calculate_dirtyrate(struct DirtyRateConfig config) { /* todo */