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=-2.2 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 03846C54FCB for ; Wed, 22 Apr 2020 14:07:00 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id D21162077D for ; Wed, 22 Apr 2020 14:06:59 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726981AbgDVOG6 (ORCPT ); Wed, 22 Apr 2020 10:06:58 -0400 Received: from foss.arm.com ([217.140.110.172]:50436 "EHLO foss.arm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1725810AbgDVOG6 (ORCPT ); Wed, 22 Apr 2020 10:06:58 -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 4EB9D30E; Wed, 22 Apr 2020 07:06:58 -0700 (PDT) Received: from bogus (unknown [10.37.12.118]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPSA id 2F2583F68F; Wed, 22 Apr 2020 07:06:56 -0700 (PDT) Date: Wed, 22 Apr 2020 15:06:53 +0100 From: Sudeep Holla To: Peter Zijlstra Cc: mingo@kernel.org, linux-kernel@vger.kernel.org, tglx@linutronix.de, rostedt@goodmis.org, qais.yousef@arm.com, juri.lelli@redhat.com, vincent.guittot@linaro.org, dietmar.eggemann@arm.com, bsegall@google.com, mgorman@suse.de, daniel.lezcano@linaro.org Subject: Re: [PATCH 06/23] sched,psci: Convert to sched_set_fifo*() Message-ID: <20200422140653.GG24150@bogus> References: <20200422112719.826676174@infradead.org> <20200422112831.574539982@infradead.org> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20200422112831.574539982@infradead.org> User-Agent: Mutt/1.9.4 (2018-02-28) Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Wed, Apr 22, 2020 at 01:27:25PM +0200, Peter Zijlstra wrote: > Because SCHED_FIFO is a broken scheduler model (see previous patches) > take away the priority field, the kernel can't possibly make an > informed decision. > > Effectively changes prio from 99 to 50. > > XXX this thing is horrific, it basically open-codes a stop-machine and > idle. > > Cc: daniel.lezcano@linaro.org > Cc: sudeep.holla@arm.com Tested the PSCI checker pulling the entire series. Continues to work :) Tested-by: Sudeep Holla -- Regards, Sudeep