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Sat, 15 Aug 2020 14:02:01 -0400 Received: from DGGEMS401-HUB.china.huawei.com (unknown [172.30.72.58]) by Forcepoint Email with ESMTP id 102351BFD4E5DDCEF8C1; Sat, 15 Aug 2020 10:11:17 +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 10:11:10 +0800 From: Chuan Zheng To: , , Subject: [PATCH v2 10/10] migration/dirtyrate: Implement qmp_cal_dirty_rate()/qmp_get_dirty_rate() function Date: Sat, 15 Aug 2020 10:23:00 +0800 Message-ID: <1597458180-16945-11-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 (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=45.249.212.32; envelope-from=zhengchuan@huawei.com; helo=huawei.com X-detected-operating-system: by eggs.gnu.org: First seen = 2020/08/15 14:01:48 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+importer=patchew.org@nongnu.org Sender: "Qemu-devel" Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" From: Zheng Chuan Implement qmp_cal_dirty_rate()/qmp_get_dirty_rate() function which could be= called Signed-off-by: Zheng Chuan --- migration/dirtyrate.c | 56 +++++++++++++++++++++++++++++++++++++++++++++++= ++++ qapi/migration.json | 42 ++++++++++++++++++++++++++++++++++++++ 2 files changed, 98 insertions(+) diff --git a/migration/dirtyrate.c b/migration/dirtyrate.c index d487030..bf8fe9e 100644 --- a/migration/dirtyrate.c +++ b/migration/dirtyrate.c @@ -66,6 +66,39 @@ static int dirty_rate_set_state(int new_state) return 0; } =20 +static struct DirtyRateInfo *query_dirty_rate_info(void) +{ + int64_t dirty_rate =3D dirty_stat.dirty_rate; + struct DirtyRateInfo *info =3D g_malloc0(sizeof(DirtyRateInfo)); + + switch(CalculatingState) { + case CAL_DIRTY_RATE_INIT: + info->dirty_rate =3D -1; + info->status =3D g_strdup("Not start measuring"); + break; + case CAL_DIRTY_RATE_ACTIVE: + info->dirty_rate =3D -1; + info->status =3D g_strdup("Still measuring"); + break; + case CAL_DIRTY_RATE_END: + info->dirty_rate =3D dirty_rate; + info->status =3D g_strdup("Measured"); + break; + default: + info->dirty_rate =3D -1; + info->status =3D g_strdup("Unknown status"); + break; + } + + /* + * Only support query once for each calculation, + * reset as CAL_DIRTY_RATE_INIT after query + */ + (void)dirty_rate_set_state(CAL_DIRTY_RATE_INIT); + + return info; +} + static void reset_dirtyrate_stat(void) { dirty_stat.total_dirty_samples =3D 0; @@ -390,3 +423,26 @@ void *get_dirtyrate_thread(void *arg) =20 return NULL; } + +void qmp_calc_dirty_rate(int64_t calc_time, Error **errp) +{ + static struct DirtyRateConfig config; + QemuThread thread; + + /* + * We don't begin calculating thread only when it's in calculating sta= tus. + */ + if (CalculatingState =3D=3D CAL_DIRTY_RATE_ACTIVE) { + return; + } + + config.sample_period_seconds =3D get_sample_page_period(calc_time); + config.sample_pages_per_gigabytes =3D DIRTYRATE_DEFAULT_SAMPLE_PAGES; + qemu_thread_create(&thread, "get_dirtyrate", get_dirtyrate_thread, + (void *)&config, QEMU_THREAD_DETACHED); +} + +struct DirtyRateInfo *qmp_query_dirty_rate(Error **errp) +{ + return query_dirty_rate_info(); +} diff --git a/qapi/migration.json b/qapi/migration.json index d500055..ccc7a4e 100644 --- a/qapi/migration.json +++ b/qapi/migration.json @@ -1621,3 +1621,45 @@ ## { 'event': 'UNPLUG_PRIMARY', 'data': { 'device-id': 'str' } } + +## +# @DirtyRateInfo: +# +# Information about current dirty page rate of vm. +# +# @dirty-rate: @dirtyrate describing the dirty page rate of vm +# in units of MB/s. +# If this field return '-1', it means querying is not +# start or not complete. +# +# @status: @status containing dirtyrate query status includes +# status with 'not start measuring' or +# 'Still measuring' or 'measured'(since 5.2) +## +{ 'struct': 'DirtyRateInfo', + 'data': {'dirty-rate': 'int64', + 'status': 'str'} } + +## +# @calc-dirty-rate: +# +# start calculating dirty page rate for vm +# +# @calc-time: time in units of second for sample dirty pages +# +# Since: 5.2 +# +# Example: +# {"command": "cal-dirty-rate", "data": {"calc-time": 1} } +# +## +{ 'command': 'calc-dirty-rate', 'data': {'calc-time': 'int64'} } + +## +# @query-dirty-rate: +# +# query dirty page rate in units of MB/s for vm +# +# Since: 5.2 +## +{ 'command': 'query-dirty-rate', 'returns': 'DirtyRateInfo' } --=20 1.8.3.1