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 X-Spam-Level: X-Spam-Status: No, score=-3.6 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, DKIM_VALID_AU,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS, URIBL_BLOCKED,USER_AGENT_GIT autolearn=no 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 896D1C433E0 for ; Sat, 16 May 2020 12:50:04 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 5B86220727 for ; Sat, 16 May 2020 12:50:04 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="RdZgSeub" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726297AbgEPMuC (ORCPT ); Sat, 16 May 2020 08:50:02 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:47492 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-FAIL-OK-FAIL) by vger.kernel.org with ESMTP id S1726206AbgEPMuB (ORCPT ); Sat, 16 May 2020 08:50:01 -0400 Received: from mail-pj1-x1043.google.com (mail-pj1-x1043.google.com [IPv6:2607:f8b0:4864:20::1043]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 62A90C061A0C for ; Sat, 16 May 2020 05:50:01 -0700 (PDT) Received: by mail-pj1-x1043.google.com with SMTP id fu13so2317215pjb.5 for ; Sat, 16 May 2020 05:50:01 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=from:to:cc:subject:date:message-id:mime-version :content-transfer-encoding; bh=y/pu6s9heqLQoPscPRtZWIfWJlyEAE3JhcWqjsVnWMo=; b=RdZgSeubYs284jc/aj+vQ6MytNBYmTMw9MitZUl3I4N9Iup5ZDFXQE6pvEMdjkcCF1 ZspPNeToui/wJwJEKDNqRBmdT9QxQhHaD+UBSTScFwosklKooOUmuMHG+ibsYSN2Sxu7 XfZ8/4fDYQXF7M2q6ZZiO/6RKWgWI+5UeI2hHs1YYBcxHsYy9Ay7/4mTDkfgUA6UtDcv Si34VJBFujnZx+3IkwWZnIp9wJciQAKYEnjPeLS3E0usZhOBq5SenAZOfJdE76R8gSCb qURUDvhC8wIVwNy9CKGnVqroqfv7MUmYNQj50xuYHhmHl2eSuNcgMpHRudn7fTro3q7O MG1A== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:mime-version :content-transfer-encoding; bh=y/pu6s9heqLQoPscPRtZWIfWJlyEAE3JhcWqjsVnWMo=; b=mEQKOZjIkWsvPNOIRIGK+P6iLCw78oICIShANlRgwG8//id14Z9//N+4ltfhYBcxuw cXAua3DRz9Zd4uIKv0bs3uOqtdNQ27ZyRllFp8kkFm+b6cCN5OWJZefk9IwhPbDjrKR+ g1tkorxNpBbEJRP6+kLBZp0o0gxx3SLlWLQFB3EPGlAfNs5iY2AouaZydPdxoMGbIcKc 8xumH1mcc5hHNsX90yA/Ih0XnlTtVX8rEydR6++Yi1FF/FhlEO9kP6wTe74WxUKAU//I JUhe4oDM3FbGepQO+qIxaddEFZEp9D4u2A3i6HZv6UkJnwmJp4dFvTbXnvOWSdF0Lzuh +2bA== X-Gm-Message-State: AOAM531HTHC4aa+HZLjSUR1TAHTcxneZarhgLE7ImnyS/oxZH+yP9cyP jpJEBk4UySys7kfqmDX5ADmY2uwb X-Google-Smtp-Source: ABdhPJy2I3ru751urDomegpMHM+LuOGE8PrXhFnO8+ShubkkeVhH+WuYkkZ2G/DJlpcqL/9BEjaeFQ== X-Received: by 2002:a17:90a:c584:: with SMTP id l4mr8877644pjt.195.1589633400684; Sat, 16 May 2020 05:50:00 -0700 (PDT) Received: from localhost.localdomain (61-228-240-171.dynamic-ip.hinet.net. [61.228.240.171]) by smtp.gmail.com with ESMTPSA id k27sm3768323pgb.30.2020.05.16.05.49.56 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sat, 16 May 2020 05:50:00 -0700 (PDT) From: Lecopzer Chen To: linux-kernel@vger.kernel.org Cc: lecopzer.chen@mediatek.com, linux-arm-kernel@lists.infradead.org, matthias.bgg@gmail.com, catalin.marinas@arm.com, will@kernel.org, mark.rutland@arm.com, mingo@redhat.com, acme@kernel.org, jolsa@redhat.com, namhyung@kernel.org, linux-mediatek@lists.infradead.org, alexander.shishkin@linux.intel.com, peterz@infradead.org, yj.chiang@mediatek.com, Lecopzer Chen Subject: [PATCH 0/3] arm64: perf: Add support for Perf NMI interrupts Date: Sat, 16 May 2020 20:48:54 +0800 Message-Id: <20200516124857.75004-1-lecopzer@gmail.com> X-Mailer: git-send-email 2.25.1 MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org These series implement Perf NMI funxtionality and depends on Pseudo NMI [1] which has been upstreamed. In arm64 with GICv3, Pseudo NMI was implemented for NMI-like interruts. That can be extended to Perf NMI which is the prerequisite for hard-lockup detector which had already a standard interface inside Linux. Thus the first step we need to implement perf NMI interface and make sure it works fine. Perf NMI has been test by dd if=/dev/urandom of=/dev/null like the link [2] did. [1] https://lkml.org/lkml/2019/1/31/535 [2] https://www.linaro.org/blog/debugging-arm-kernels-using-nmifiq Lecopzer Chen (3): arm_pmu: Add support for perf NMI interrupts registration arm64: perf: Support NMI context for perf event ISR arm64: Kconfig: Add support for the Perf NMI arch/arm64/Kconfig | 10 +++++++ arch/arm64/kernel/perf_event.c | 36 ++++++++++++++++++------ drivers/perf/arm_pmu.c | 51 ++++++++++++++++++++++++++++++---- include/linux/perf/arm_pmu.h | 6 ++++ 4 files changed, 88 insertions(+), 15 deletions(-) -- 2.25.1