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 Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id C7109C433F5 for ; Mon, 17 Jan 2022 01:59:09 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To: Message-ID:Date:Subject:CC:To:From:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=YCyC4CGbWeZzTQZtIyJd8FCJC/pyuo7k6kZoeqLqP5g=; b=teCbUahUVlHpsO xr+xMJUcTNdZLFdKtGtPClO4To+Igl2C7vUkoCfSzijk2jvrM/cgeX1EwhN7Mo+lgGTKTfj/R//HU veWnebhIdi8UllROkRDtrxAZSLF05JwR7qOXMyOrBQY4GMOWSatXplmQJy8AckKMmXIiE2lXESFFU R6pPcj94Zm7pGLL4tLdGsnLKv9geg+uiqmxVaeagCqfR3Ee6vM5rqv9h4aveHw6WvlV4XNCfmWPVb ujuFN+AgH0s6Of8h2/W0iffi56zOl4Zxg/q+RVZ8pHlqdioPeVxRThF+zNV9124E/mxF/hqG29wee epplx+MzGVtxMCeAt9Tw==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1n9HHQ-00DEWB-0h; Mon, 17 Jan 2022 01:57:56 +0000 Received: from szxga01-in.huawei.com ([45.249.212.187]) by bombadil.infradead.org with esmtps (Exim 4.94.2 #2 (Red Hat Linux)) id 1n9HHB-00DEUp-QW for linux-arm-kernel@lists.infradead.org; Mon, 17 Jan 2022 01:57:44 +0000 Received: from kwepemi100010.china.huawei.com (unknown [172.30.72.55]) by szxga01-in.huawei.com (SkyGuard) with ESMTP id 4JcZgz4v3yzZf5c; Mon, 17 Jan 2022 09:53:51 +0800 (CST) Received: from kwepemm600016.china.huawei.com (7.193.23.20) by kwepemi100010.china.huawei.com (7.221.188.54) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2308.21; Mon, 17 Jan 2022 09:57:34 +0800 Received: from localhost.localdomain (10.67.165.24) by kwepemm600016.china.huawei.com (7.193.23.20) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2308.21; Mon, 17 Jan 2022 09:57:33 +0800 From: Guangbin Huang To: , , CC: , , , , , , , Subject: [RESEND PATCH 1/2] drivers/perf: hisi: Add description for HNS3 PMU driver Date: Mon, 17 Jan 2022 09:52:21 +0800 Message-ID: <20220117015222.9617-2-huangguangbin2@huawei.com> X-Mailer: git-send-email 2.33.0 In-Reply-To: <20220117015222.9617-1-huangguangbin2@huawei.com> References: <20220117015222.9617-1-huangguangbin2@huawei.com> MIME-Version: 1.0 X-Originating-IP: [10.67.165.24] X-ClientProxiedBy: dggems702-chm.china.huawei.com (10.3.19.179) To kwepemm600016.china.huawei.com (7.193.23.20) X-CFilter-Loop: Reflected X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20220116_175742_238329_EFF0A690 X-CRM114-Status: GOOD ( 14.56 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org HNS3 PMU End Point device is supported on HiSilicon HIP09 platform, so add document hns3-pmu.rst to provide guidance on how to use it. Signed-off-by: Guangbin Huang --- Documentation/admin-guide/perf/hns3-pmu.rst | 122 ++++++++++++++++++++ 1 file changed, 122 insertions(+) create mode 100644 Documentation/admin-guide/perf/hns3-pmu.rst diff --git a/Documentation/admin-guide/perf/hns3-pmu.rst b/Documentation/admin-guide/perf/hns3-pmu.rst new file mode 100644 index 000000000000..1fe3d549d074 --- /dev/null +++ b/Documentation/admin-guide/perf/hns3-pmu.rst @@ -0,0 +1,122 @@ +====================================== +HNS3 Performance Monitoring Unit (PMU) +====================================== + +HNS3(HiSilicon network system 3) Performance Monitoring Unit (PMU) is an +End Point device to collect performance statistics of HiSilicon SoC NIC. +On Hip09, each SICL(Super I/O cluster) has one PMU device. + +HNS3 PMU supports collection of performance statistics such as bandwidth, +latency, packet rate and interrupt rate. + +Each HNS3 PMU supports 8 hardware events. + +HNS3 PMU driver +=============== + +The HNS3 PMU driver registers a perf PMU with the name of its device id.:: + + /sys/devices/hns3_pmu_ + +The device_id is read from hardware register, it contains information of +chip_id(bit 31:2) and SICL_ID(bit 1:0). One chip may have one or more SICL. + +PMU driver provides description of available events, filter modes, format, +identifier and cpumask in sysfs. + +The "events" directory describes the event code and subevent code of all +supported events shown in perf list. + +The "filtermode" directory describes the supported filter modes of each +event. + +The "format" directory describes all formats of the config (events) and +config1 (filter options) fields of the perf_event_attr structure. + +The "identifier" file shows version of PMU hardware device. + +Example usage of checking event code and subevent code:: + + $# cat /sys/devices/hns3_pmu_0/events/pps_ssu_rpu + config=0x0102 + +The upper 8 bits of config (here 0x01) are the event code. The lower 8 bits +of config (here 0x02) are the subevent code. + +Example usage of checking supported filter mode:: + + $# cat /sys/devices/hns3_pmu_0/filtermode/bw_igu_ssu + filter mode supported: global/port/port-tc/ + +Example usage of perf:: + + $# perf list + hns3_pmu_0/bw_igu_ssu/ [kernel PMU event] + ------------------------------------------ + + $# perf stat -a -e hns3_pmu_0/bw_igu_ssu,global=1/ -I 1000 + or + $# perf stat -a -e hns3_pmu_0/event=0,subevent=0,global=1/ -I 1000 + +The current driver does not support sampling, so "perf record" is unsupported. +Also attach to a task is unsupported for HNS3 PMU. + +Filter modes +-------------- + +1. global mode +PMU collect performance statistics for all HNS3 PCIe functions of IO DIE. +Set the "global" filter option to 1 will enable this mode. +Example usage of perf:: + + $# perf stat -a -e hns3_pmu_0/event=0,subevent=0,global=1/ -I 1000 + +2. port mode +PMU collect performance statistic of one whole physical port. The port id +is same as mac id. The "tc" filter option must be set to 0xF in this mode, +here tc stands for traffic class. + +Example usage of perf:: + + $# perf stat -a -e hns3_pmu_0/event=0,subevent=0,port=0,tc=0xF/ -I 1000 + +3. port-tc mode +PMU collect performance statistic of one tc of physical port. The port id +is same as mac id. The "tc" filter option must be set to 0 ~ 7 in this +mode. +Example usage of perf:: + + $# perf stat -a -e hns3_pmu_0/event=0,subevent=0,port=0,tc=0/ -I 1000 + +4. func mode +PMU collect performance statistic of one PF/VF. The function id is BDF of +PF/VF, its conversion formula:: + + func = (bus << 8) + (device << 3) + (function) + +for example: + BDF func + 35:00.0 0x3500 + 35:00.1 0x3501 + 35:01.0 0x3508 + +In this mode, the "queue" filter option must be set to 0xFFFF. +Example usage of perf:: + + $# perf stat -a -e hns3_pmu_0/event=0,subevent=0,bdf=0x3500,queue=0xFFFF/ -I 1000 + +5. func-queue mode +PMU collect performance statistic of one queue of PF/VF. The function id +is BDF of PF/VF, the "queue" filter option must be set to the exact queue +id of function. +Example usage of perf:: + + $# perf stat -a -e hns3_pmu_0/event=0,subevent=0,bdf=0x3500,queue=0/ -I 1000 + +6. func-intr mode +PMU collect performance statistic of one interrupt of PF/VF. The function +id is BDF of PF/VF, the "intr" filter option must be set to the exact +interrupt id of function. +Example usage of perf:: + + $# perf stat -a -e hns3_pmu_0/event=0,subevent=0,bdf=0x3500,intr=0/ -I 1000 -- 2.33.0 _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel