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=-2.5 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,USER_AGENT_SANE_1 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 2C9CCC433DF for ; Tue, 23 Jun 2020 15:44:10 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 09B5F20780 for ; Tue, 23 Jun 2020 15:44:10 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1733023AbgFWPoJ (ORCPT ); Tue, 23 Jun 2020 11:44:09 -0400 Received: from foss.arm.com ([217.140.110.172]:56754 "EHLO foss.arm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1733016AbgFWPoI (ORCPT ); Tue, 23 Jun 2020 11:44:08 -0400 Received: from usa-sjc-imap-foss1.foss.arm.com (unknown [10.121.207.14]) by usa-sjc-mx-foss1.foss.arm.com (Postfix) with ESMTP id C82AD1F1; Tue, 23 Jun 2020 08:44:07 -0700 (PDT) Received: from e107158-lin.cambridge.arm.com (e107158-lin.cambridge.arm.com [10.1.195.21]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPSA id 5E8153F6CF; Tue, 23 Jun 2020 08:44:05 -0700 (PDT) Date: Tue, 23 Jun 2020 16:44:03 +0100 From: Qais Yousef To: Vincent Guittot Cc: Mel Gorman , Patrick Bellasi , Dietmar Eggemann , Peter Zijlstra , Ingo Molnar , Randy Dunlap , Jonathan Corbet , Juri Lelli , Steven Rostedt , Ben Segall , Luis Chamberlain , Kees Cook , Iurii Zaikin , Quentin Perret , Valentin Schneider , Pavan Kondeti , linux-doc@vger.kernel.org, linux-kernel , linux-fs Subject: Re: [PATCH 1/2] sched/uclamp: Add a new sysctl to control RT default boost value Message-ID: <20200623154402.jfv5yhhrsbx7toes@e107158-lin.cambridge.arm.com> References: <87v9k84knx.derkling@matbug.net> <20200603101022.GG3070@suse.de> <20200603165200.v2ypeagziht7kxdw@e107158-lin.cambridge.arm.com> <20200608123102.6sdhdhit7lac5cfl@e107158-lin.cambridge.arm.com> <20200611102407.vhy3zjexrhorx753@e107158-lin.cambridge.arm.com> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline In-Reply-To: User-Agent: NeoMutt/20171215 Sender: linux-fsdevel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-fsdevel@vger.kernel.org Hi Vincent On 06/11/20 14:01, Vincent Guittot wrote: > On Thu, 11 Jun 2020 at 12:24, Qais Yousef wrote: [...] > > > Strange because I have been able to trace them. > > > > On your arm platform? I can certainly see them on x86. > > yes on my arm platform Sorry for not getting back to you earlier but I have tried several things and shared my results, which you were CCed into all of them. I have posted a patch that protects uclamp with a static key, mind trying it on your platform to see if it helps you too? https://lore.kernel.org/lkml/20200619172011.5810-1-qais.yousef@arm.com/ Thanks -- Qais Yousef