From patchwork Sat Aug 15 02:22:51 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Zheng Chuan X-Patchwork-Id: 276399 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, 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 59745C433E1 for ; Sat, 15 Aug 2020 18:05:57 +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 2F40823B6F for ; Sat, 15 Aug 2020 18:05:57 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 2F40823B6F Authentication-Results: mail.kernel.org; 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Sat, 15 Aug 2020 10:11:12 +0800 (CST) Received: from huawei.com (10.175.101.6) by DGGEMS401-HUB.china.huawei.com (10.3.19.201) with Microsoft SMTP Server id 14.3.487.0; Sat, 15 Aug 2020 10:11:05 +0800 From: Chuan Zheng To: , , Subject: [PATCH v2 01/10] migration/dirtyrate: Add get_dirtyrate_thread() function Date: Sat, 15 Aug 2020 10:22:51 +0800 Message-ID: <1597458180-16945-2-git-send-email-zhengchuan@huawei.com> X-Mailer: git-send-email 1.8.3.1 In-Reply-To: <1597458180-16945-1-git-send-email-zhengchuan@huawei.com> References: <1597458180-16945-1-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 = 2020/08/15 14:02:05 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 Add get_dirtyrate_thread() functions Signed-off-by: Zheng Chuan Signed-off-by: YanYing Zhuang --- migration/Makefile.objs | 1 + migration/dirtyrate.c | 64 +++++++++++++++++++++++++++++++++++++++++++++++++ migration/dirtyrate.h | 44 ++++++++++++++++++++++++++++++++++ 3 files changed, 109 insertions(+) create mode 100644 migration/dirtyrate.c create mode 100644 migration/dirtyrate.h diff --git a/migration/Makefile.objs b/migration/Makefile.objs index 0fc619e..12ae98c 100644 --- a/migration/Makefile.objs +++ b/migration/Makefile.objs @@ -6,6 +6,7 @@ common-obj-y += qemu-file.o global_state.o common-obj-y += qemu-file-channel.o common-obj-y += xbzrle.o postcopy-ram.o common-obj-y += qjson.o +common-obj-y += dirtyrate.o common-obj-y += block-dirty-bitmap.o common-obj-y += multifd.o common-obj-y += multifd-zlib.o diff --git a/migration/dirtyrate.c b/migration/dirtyrate.c new file mode 100644 index 0000000..bb0ebe9 --- /dev/null +++ b/migration/dirtyrate.c @@ -0,0 +1,64 @@ +/* + * Dirtyrate implement code + * + * Copyright (c) 2017-2020 HUAWEI TECHNOLOGIES CO.,LTD. + * + * Authors: + * Chuan Zheng + * + * This work is licensed under the terms of the GNU GPL, version 2 or later. + * See the COPYING file in the top-level directory. + */ + +#include "qemu/osdep.h" +#include "qapi/error.h" +#include "crypto/hash.h" +#include "crypto/random.h" +#include "qemu/config-file.h" +#include "exec/memory.h" +#include "exec/ramblock.h" +#include "exec/target_page.h" +#include "qemu/rcu_queue.h" +#include "qapi/qapi-commands-migration.h" +#include "migration.h" +#include "dirtyrate.h" + +CalculatingDirtyRateState CalculatingState = CAL_DIRTY_RATE_INIT; + +static int dirty_rate_set_state(int new_state) +{ + int old_state = CalculatingState; + + if (new_state == old_state) { + return -1; + } + + if (atomic_cmpxchg(&CalculatingState, old_state, new_state) != old_state) { + return -1; + } + + return 0; +} + +static void calculate_dirtyrate(struct DirtyRateConfig config) +{ + /* todo */ + return; +} + +void *get_dirtyrate_thread(void *arg) +{ + struct DirtyRateConfig config = *(struct DirtyRateConfig *)arg; + int ret; + + ret = dirty_rate_set_state(CAL_DIRTY_RATE_ACTIVE); + if (ret == -1) { + return NULL; + } + + calculate_dirtyrate(config); + + ret = dirty_rate_set_state(CAL_DIRTY_RATE_END); + + return NULL; +} diff --git a/migration/dirtyrate.h b/migration/dirtyrate.h new file mode 100644 index 0000000..914c363 --- /dev/null +++ b/migration/dirtyrate.h @@ -0,0 +1,44 @@ +/* + * Dirtyrate common functions + * + * Copyright (c) 2020 HUAWEI TECHNOLOGIES CO., LTD. + * + * Authors: + * Chuan Zheng + * + * This work is licensed under the terms of the GNU GPL, version 2 or later. + * See the COPYING file in the top-level directory. + */ + +#ifndef QEMU_MIGRATION_DIRTYRATE_H +#define QEMU_MIGRATION_DIRTYRATE_H + +/* + * Sample 256 pages per GB as default. + * TODO: Make it configurable. + */ +#define DIRTYRATE_DEFAULT_SAMPLE_PAGES 256 + +/* Take 1s as default for calculation duration */ +#define DEFAULT_FETCH_DIRTYRATE_TIME_SEC 1 + +struct DirtyRateConfig { + uint64_t sample_pages_per_gigabytes; /* sample pages per GB */ + int64_t sample_period_seconds; /* time duration between two sampling */ +}; + +/* + * To record calculate dirty_rate status: + * 0: initial status, calculating thread is not be created here. + * 1: calculating thread is created. + * 2: calculating thread is end, we can get result. + */ +typedef enum { + CAL_DIRTY_RATE_INIT = 0, + CAL_DIRTY_RATE_ACTIVE, + CAL_DIRTY_RATE_END, +} CalculatingDirtyRateState; + +void *get_dirtyrate_thread(void *arg); +#endif +