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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 0C77BC4332F for ; Tue, 14 Nov 2023 02:15:18 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231492AbjKNCPT convert rfc822-to-8bit (ORCPT ); Mon, 13 Nov 2023 21:15:19 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:38630 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229580AbjKNCPS (ORCPT ); Mon, 13 Nov 2023 21:15:18 -0500 Received: from fd01.gateway.ufhost.com (fd01.gateway.ufhost.com [61.152.239.71]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id F3552D43; Mon, 13 Nov 2023 18:15:11 -0800 (PST) Received: from EXMBX165.cuchost.com (unknown [175.102.18.54]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (Client CN "EXMBX165", Issuer "EXMBX165" (not verified)) by fd01.gateway.ufhost.com (Postfix) with ESMTP id D4E658118; Tue, 14 Nov 2023 10:15:09 +0800 (CST) Received: from EXMBX172.cuchost.com (172.16.6.92) by EXMBX165.cuchost.com (172.16.6.75) with Microsoft SMTP Server (TLS) id 15.0.1497.42; Tue, 14 Nov 2023 10:15:09 +0800 Received: from localhost.localdomain (202.188.176.82) by EXMBX172.cuchost.com (172.16.6.92) with Microsoft SMTP Server (TLS) id 15.0.1497.42; Tue, 14 Nov 2023 10:15:03 +0800 From: Ji Sheng Teoh To: Will Deacon , Mark Rutland , "Rob Herring" , Krzysztof Kozlowski , Conor Dooley , Thomas Gleixner , Peter Zijlstra CC: Ji Sheng Teoh , Ley Foon Tan , , , Subject: [PATCH v2 0/2] StarFive's StarLink PMU Support Date: Tue, 14 Nov 2023 10:12:52 +0800 Message-ID: <20231114021254.3009799-1-jisheng.teoh@starfivetech.com> X-Mailer: git-send-email 2.25.1 MIME-Version: 1.0 Content-Type: text/plain X-Originating-IP: [202.188.176.82] X-ClientProxiedBy: EXCAS062.cuchost.com (172.16.6.22) To EXMBX172.cuchost.com (172.16.6.92) X-YovoleRuleAgent: yovoleflag Content-Transfer-Encoding: 8BIT Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Changes since v1: - Change 'depends on SOC_STARFIVE' to 'depends on ARCH_STARFIVE' in Kconfig ---- This patch series adds support for StarFive's Starlink Performance Monitor Unit(PMU). StarFive's StarLink PMU integrates one or more CPU cores with a shared L3 memory system. The PMU supports overflow interrupt, up to 16 programmable 64bit event counters, and an independent 64bit cycle counter. StarLink PMU is accessed via MMIO. Example Perf stat output: [root@user]# perf stat -a -e /starfive_starlink_pmu/cycles/ \ -e /starfive_starlink_pmu/read_miss/ \ -e /starfive_starlink_pmu/read_hit/ \ -e /starfive_starlink_pmu/release_request/ \ -e /starfive_starlink_pmu/write_hit/ \ -e /starfive_starlink_pmu/write_miss/ \ -e /starfive_starlink_pmu/write_request/ \ -e /starfive_starlink_pmu/writeback/ \ -e /starfive_starlink_pmu/read_request/ \ -- openssl speed rsa2048 Doing 2048 bits private rsa's for 10s: 5 2048 bits private RSA's in 2.84s Doing 2048 bits public rsa's for 10s: 169 2048 bits public RSA's in 2.42s version: 3.0.11 built on: Tue Sep 19 13:02:31 2023 UTC options: bn(64,64) CPUINFO: N/A sign verify sign/s verify/s rsa 2048 bits 0.568000s 0.014320s 1.8 69.8 ///////// Performance counter stats for 'system wide': 649991998 starfive_starlink_pmu/cycles/ 1009690 starfive_starlink_pmu/read_miss/ 1079750 starfive_starlink_pmu/read_hit/ 2089405 starfive_starlink_pmu/release_request/ 129 starfive_starlink_pmu/write_hit/ 70 starfive_starlink_pmu/write_miss/ 194 starfive_starlink_pmu/write_request/ 150080 starfive_starlink_pmu/writeback/ 2089423 starfive_starlink_pmu/read_request/ 27.062755678 seconds time elapsed Ji Sheng Teoh (2): perf: starfive: Add StarLink PMU support dt-bindings: perf: starfive: Add StarLink PMU .../bindings/perf/starfive,starlink-pmu.yaml | 46 ++ drivers/perf/Kconfig | 9 + drivers/perf/Makefile | 1 + drivers/perf/starfive_starlink_pmu.c | 654 ++++++++++++++++++ include/linux/cpuhotplug.h | 1 + 5 files changed, 711 insertions(+) create mode 100644 Documentation/devicetree/bindings/perf/starfive,starlink-pmu.yaml create mode 100644 drivers/perf/starfive_starlink_pmu.c -- 2.25.1