From patchwork Wed Aug 18 05:12:44 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "liuqi (BA)" X-Patchwork-Id: 12443625 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=-10.9 required=3.0 tests=BAYES_00,DATE_IN_PAST_03_06, DKIMWL_WL_HIGH,DKIM_SIGNED,DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED, USER_AGENT_GIT autolearn=unavailable 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 5C356C4338F for ; Wed, 18 Aug 2021 08:39:24 +0000 (UTC) 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 mail.kernel.org (Postfix) with ESMTPS id 1CB0D6108F for ; Wed, 18 Aug 2021 08:39:24 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.4.1 mail.kernel.org 1CB0D6108F Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=huawei.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=lists.infradead.org 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: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:In-Reply-To:References: List-Owner; bh=4ldGt4DlzBKruIVvyaLchYT14AWMWdPMyIhxY9QQpFU=; b=1Nnnym0peyp7wC 7qrpSITPJb9j5wJu+szaR+Qi8vJO0CTaBwkOB1lwNBPrdY9+SW3HH7sge7SOCnNng28Vb//9Sod5x vHDA5Gm4DGAA68I/hTdo3++CQnZvYkfj5mL1oVQorPXmAEfwLDbaVNiqdsSxDFG3UWUuD3KKWDJnK AMcWTbk5tSDNOnpLv/2tY9eK1kxs5pT3xKvTHTqoxrmZZZPir7ptQ1WeaUah0XMR+ReGQSjCEqEo9 1mIVDY49KcODOws22Zlk4x4FRfQICTnTEpJkdIXdsJ1zv9+UTxMWnoAOXPWRj5hY385+WlstVPYBQ sfJSAVk3sxWs+pKd9jVg==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1mGH4Q-004ffl-NG; Wed, 18 Aug 2021 08:37:10 +0000 Received: from szxga02-in.huawei.com ([45.249.212.188]) by bombadil.infradead.org with esmtps (Exim 4.94.2 #2 (Red Hat Linux)) id 1mGH46-004fZ5-0A for linux-arm-kernel@lists.infradead.org; Wed, 18 Aug 2021 08:36:52 +0000 Received: from dggemv704-chm.china.huawei.com (unknown [172.30.72.54]) by szxga02-in.huawei.com (SkyGuard) with ESMTP id 4GqLkZ6bnpzdZgp; Wed, 18 Aug 2021 16:32:54 +0800 (CST) Received: from dggema757-chm.china.huawei.com (10.1.198.199) by dggemv704-chm.china.huawei.com (10.3.19.47) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256) id 15.1.2176.2; Wed, 18 Aug 2021 16:36:39 +0800 Received: from localhost.localdomain (10.67.165.2) by dggema757-chm.china.huawei.com (10.1.198.199) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256_P256) id 15.1.2176.2; Wed, 18 Aug 2021 16:36:39 +0800 From: Qi Liu To: , , CC: , , , , Subject: [PATCH v9 0/2] drivers/perf: hisi: Add support for PCIe PMU Date: Wed, 18 Aug 2021 13:12:44 +0800 Message-ID: <20210818051246.29545-1-liuqi115@huawei.com> X-Mailer: git-send-email 2.17.1 MIME-Version: 1.0 X-Originating-IP: [10.67.165.2] X-ClientProxiedBy: dggems706-chm.china.huawei.com (10.3.19.183) To dggema757-chm.china.huawei.com (10.1.198.199) X-CFilter-Loop: Reflected X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20210818_013650_496179_D186A0EC X-CRM114-Status: GOOD ( 11.54 ) 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: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org This patchset adds support for HiSilicon PCIe Performance Monitoring Unit(PMU). It is a PCIe Root Complex integrated End Point(RCiEP) device added on Hip09. Each PCIe Core has a PMU RCiEP to monitor multi root ports and all Endpoints downstream these root ports. HiSilicon PCIe PMU is supported to collect performance data of PCIe bus, such as: bandwidth, latency etc. Example usage of counting PCIe rx memory write latency:: $# perf stat -e hisi_pcie0_core0/rx_mwr_latency/ $# perf stat -e hisi_pcie0_core0/rx_mwr_cnt/ $# perf stat -g -e hisi_pcie0_core0/rx_mwr_latency/ -e hisi_pcie0_core0/rx_mwr_cnt/ average rx memory write latency can be calculated like this: latency = rx_mwr_latency / rx_mwr_cnt. Common PMU events and metrics will be described in JSON file, and will be add in userspace perf tool latter. Changes since v8: - Remove subevent parameter in attr->config. - Check the counter scheduling constraints when accepting an event group. - Link: https://lore.kernel.org/linux-arm-kernel/20210728080932.72515-1-liuqi115@huawei.com/ Changes since v7: - Drop headerfile cpumask.h and cpuhotplug.h. - Rename events in perf list: bw->flux, lat->delay, as driver doesn't process bandwidth and average latency data. - Link: https://lore.kernel.org/linux-arm-kernel/1624532384-43002-1-git-send-email-liuqi115@huawei.com/ Changes since v6: - Move the driver to drivers/perf/hisilicon. - Treat content in PMU counter and ext_counter as different PMU events, and export them separately. - Address the comments from Will and Krzysztof. - Link: https://lore.kernel.org/linux-arm-kernel/1622467951-32114-1-git-send-email-liuqi115@huawei.com/ Changes since v5: - Fix some errors when build under ARCH=xtensa. - Link: https://lore.kernel.org/linux-arm-kernel/1621946795-14046-1-git-send-email-liuqi115@huawei.com/ Changes since v4: - Replace irq_set_affinity_hint() with irq_set_affinity(). - Link: https://lore.kernel.org/linux-arm-kernel/1621417741-5229-1-git-send-email-liuqi115@huawei.com/ Changes since v3: - Fix some warnings when build under 32bits architecture. - Address the comments from John. - Link: https://lore.kernel.org/linux-arm-kernel/1618490885-44612-1-git-send-email-liuqi115@huawei.com/ Changes since v2: - Address the comments from John. - Link: https://lore.kernel.org/linux-arm-kernel/1617959157-22956-1-git-send-email-liuqi115@huawei.com/ Changes since v1: - Drop the internal Reviewed-by tag. - Fix some build warnings when W=1. - Link: https://lore.kernel.org/linux-arm-kernel/1617788943-52722-1-git-send-email-liuqi115@huawei.com/ Qi Liu (2): docs: perf: Add description for HiSilicon PCIe PMU driver drivers/perf: hisi: Add driver for HiSilicon PCIe PMU .../admin-guide/perf/hisi-pcie-pmu.rst | 106 ++ Documentation/admin-guide/perf/index.rst | 1 + MAINTAINERS | 2 + drivers/perf/hisilicon/Kconfig | 9 + drivers/perf/hisilicon/Makefile | 2 + drivers/perf/hisilicon/hisi_pcie_pmu.c | 972 ++++++++++++++++++ include/linux/cpuhotplug.h | 1 + 7 files changed, 1093 insertions(+) create mode 100644 Documentation/admin-guide/perf/hisi-pcie-pmu.rst create mode 100644 drivers/perf/hisilicon/hisi_pcie_pmu.c