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=-2.3 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, DKIM_VALID_AU,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_PASS,USER_AGENT_MUTT autolearn=ham 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 CBFA2C4360F for ; Thu, 4 Apr 2019 10:34:22 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 9739A20657 for ; Thu, 4 Apr 2019 10:34:22 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="ctfGXMNE" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729179AbfDDKeV (ORCPT ); Thu, 4 Apr 2019 06:34:21 -0400 Received: from mail-wr1-f67.google.com ([209.85.221.67]:33679 "EHLO mail-wr1-f67.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726269AbfDDKeU (ORCPT ); Thu, 4 Apr 2019 06:34:20 -0400 Received: by mail-wr1-f67.google.com with SMTP id q1so3137743wrp.0 for ; Thu, 04 Apr 2019 03:34:19 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=date:from:to:cc:subject:message-id:references:mime-version :content-disposition:in-reply-to:user-agent; bh=xlM2KYRf0E+/OSkziWargZzvnW3c+Z58HEWwE11EBzE=; b=ctfGXMNEMppSyX6GQILDmvw2EuNdAv/bwx2AO5o6J6izZVMIhCZ3IRtQpwjyuRtdf0 A2awBuwjZkD/wQVDtIdfXeExIYycaISbD0NwHNqcmHbzlidexIx958k4duc8LI1A9trU wN95ulT+yMH0KXNhcCFUOkAkIvXGa4YMaAux7Bk6ens1sw9eHErqVISaaGts3d6DTYk3 AS/SuFvIRijFLfITVrNuYOI7uosiLveGIw6/b67b84a2Ndfyp3ZlvwJtZb5Cp4cMgAIy PMNNC2HvcENrLftgWH9ceyg9VZN8yOc/yQ3mjVPWdbN2IRK7VIYcpTOmAFpK4aZgN8pO kkfg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:date:from:to:cc:subject:message-id:references :mime-version:content-disposition:in-reply-to:user-agent; bh=xlM2KYRf0E+/OSkziWargZzvnW3c+Z58HEWwE11EBzE=; b=qbz3yXup9CZ7pG4S52vXgrybfIoP3gGBYnOZostHqBF7bsUlf97W0622H/guwnBF3w y9h69kOK+oCbrTJm9XH4fQOdEDu6ZgwEEcVOCFMOYk9XxTqPmTeiWapeguFZUd+RIQSB RBAn+Rix/LOx/FZ4SEfkvltyeMJA7dNRNKjSW647DwlYAs54iJEXPNnGBtgsYy8OA9U0 /vgb+25QFLDPI/QaECpjlJYD2G6TuCLeuyUJqVrGFeYKI63E4M0vJxpX6DW4gJuN/YkN SB7GC4Of1GATVyCK1VqoQwpqsx9RV6BfGWBlaZzBZuxC/yxEB3bi59aJZR1+sP76ShTB AUJQ== X-Gm-Message-State: APjAAAXS8rFOjuPC9I9NiM9IvAFEGbb6GeQ0azpzVq9rTjEQvznhQP0p 92xks91ztxLyUizBlb4Cfrs= X-Google-Smtp-Source: APXvYqwMmMJ9FD9WA7uwTHRAoUBjVP21MtZYultFL5Bm+C4dbXbJ5EO7xZPTex2WqdkFJ89WJLCfTw== X-Received: by 2002:adf:ec0a:: with SMTP id x10mr3460697wrn.193.1554374059292; Thu, 04 Apr 2019 03:34:19 -0700 (PDT) Received: from Red ([2a01:cb1d:147:7200:2e56:dcff:fed2:c6d6]) by smtp.googlemail.com with ESMTPSA id x192sm23571511wmf.48.2019.04.04.03.34.17 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Thu, 04 Apr 2019 03:34:18 -0700 (PDT) Date: Thu, 4 Apr 2019 12:34:15 +0200 From: Corentin Labbe To: Robin Murphy Cc: will.deacon@arm.com, mark.rutland@arm.com, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, tglx@linutronix.de, suzuki.poulose@arm.com, bigeasy@linutronix.de, peterz@infradead.org, Meng.Li@windriver.com Subject: Re: [PATCH v2 0/2] Fix Arm system PMU hotplug issues Message-ID: <20190404103415.GA8093@Red> References: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: User-Agent: Mutt/1.10.1 (2018-07-13) Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Wed, Apr 03, 2019 at 06:08:58PM +0100, Robin Murphy wrote: > Hi all, > > After a converstaion with Thomas a while back, it felt like the best way > forward here is just to resolve the pressing preemption violation, and > not make things more complicated by trying to manage theoretical races > within perf core from a distance. > > Thus v2 simply nukes the offending logic and brings those drivers in > line with the status quo. Due to the abrupt change in tactic I've not > kept the review tags given for v1. > > Robin. > > > Robin Murphy (2): > perf/arm-cci: Remove broken race mitigation > perf/arm-ccn: Remove broken race mitigation > > drivers/perf/arm-cci.c | 16 +++++++--------- > drivers/perf/arm-ccn.c | 23 +++++++++++------------ > 2 files changed, 18 insertions(+), 21 deletions(-) > > -- > 2.21.0.dirty > Hello Tested-by: Corentin Labbe Tested-on: sun8i-a83t-bananapi-m3 Thanks for having fixed this problem. Regards