From patchwork Mon Aug 24 03:51:58 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Zheng Chuan X-Patchwork-Id: 11732143 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 C670C739 for ; Mon, 24 Aug 2020 03:45:50 +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 A622F206F7 for ; Mon, 24 Aug 2020 03:45:50 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org A622F206F7 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]:46208 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1kA3Qb-0007C5-Ur for patchwork-qemu-devel@patchwork.kernel.org; Sun, 23 Aug 2020 23:45:49 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:58770) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1kA3M1-00076S-BZ for qemu-devel@nongnu.org; Sun, 23 Aug 2020 23:41:05 -0400 Received: from szxga04-in.huawei.com ([45.249.212.190]:4206 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 1kA3Lz-0005Un-6o for qemu-devel@nongnu.org; Sun, 23 Aug 2020 23:41:04 -0400 Received: from DGGEMS411-HUB.china.huawei.com (unknown [172.30.72.60]) by Forcepoint Email with ESMTP id 08E2942B6DD37E27F542; Mon, 24 Aug 2020 11:40:50 +0800 (CST) Received: from huawei.com (10.175.101.6) by DGGEMS411-HUB.china.huawei.com (10.3.19.211) with Microsoft SMTP Server id 14.3.487.0; Mon, 24 Aug 2020 11:40:39 +0800 From: Chuan Zheng To: , , , Subject: [PATCH v4 07/12] migration/dirtyrate: Compare page hash results for recorded sampled page Date: Mon, 24 Aug 2020 11:51:58 +0800 Message-ID: <1598241123-118714-8-git-send-email-zhengchuan@huawei.com> X-Mailer: git-send-email 1.8.3.1 In-Reply-To: <1598241123-118714-1-git-send-email-zhengchuan@huawei.com> References: <1598241123-118714-1-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 = 2020/08/23 23:40:45 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, qemu-devel@nongnu.org, xiexiangyou@huawei.com, alex.chen@huawei.com, ann.zhuangyanying@huawei.com, fangying1@huawei.com Errors-To: qemu-devel-bounces+patchwork-qemu-devel=patchwork.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 | 64 +++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 64 insertions(+) diff --git a/migration/dirtyrate.c b/migration/dirtyrate.c index 66de426..050270d 100644 --- a/migration/dirtyrate.c +++ b/migration/dirtyrate.c @@ -202,6 +202,70 @@ static int record_ramblock_hash_info(struct RamblockDirtyInfo **block_dinfo, return 0; } +static int 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++; + } + } + + return 0; +} + +static bool find_page_matched(RAMBlock *block, struct RamblockDirtyInfo *infos, + int count, struct RamblockDirtyInfo **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].ramblock_addr != qemu_ram_get_host_addr(block) || + infos[i].ramblock_pages != + (qemu_ram_get_used_length(block) >> DIRTYRATE_PAGE_SHIFT_KB)) { + return false; + } + + *matched = &infos[i]; + return true; +} + +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 = NULL; + if (!find_page_matched(block, info, block_index + 1, &block_dinfo)) { + continue; + } + if (calc_page_dirty_rate(block_dinfo) < 0) { + return -1; + } + update_dirtyrate_stat(block_dinfo); + } + + if (!DirtyStat.total_sample_count) { + return -1; + } + + return 0; +} + static void calculate_dirtyrate(struct DirtyRateConfig config) { /* todo */