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,URIBL_BLOCKED,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 32417C7618B for ; Sat, 27 Jul 2019 06:16:15 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 067B220840 for ; Sat, 27 Jul 2019 06:16:15 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728383AbfG0GQN (ORCPT ); Sat, 27 Jul 2019 02:16:13 -0400 Received: from Galois.linutronix.de ([193.142.43.55]:50894 "EHLO Galois.linutronix.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726046AbfG0GQN (ORCPT ); Sat, 27 Jul 2019 02:16:13 -0400 Received: from pd9ef1cb8.dip0.t-ipconnect.de ([217.239.28.184] helo=nanos) by Galois.linutronix.de with esmtpsa (TLS1.2:DHE_RSA_AES_256_CBC_SHA256:256) (Exim 4.80) (envelope-from ) id 1hrG01-0000dy-SD; Sat, 27 Jul 2019 08:16:10 +0200 Date: Sat, 27 Jul 2019 08:16:09 +0200 (CEST) From: Thomas Gleixner To: Steven Rostedt cc: LKML , x86@kernel.org, "Paul E. McKenney" , Masami Hiramatsu , Paolo Bonzini Subject: Re: [patch 0/8] core, x86: Preparatory steps for RT In-Reply-To: <20190726213036.2889a17d@oasis.local.home> Message-ID: References: <20190726211936.226129163@linutronix.de> <20190726213036.2889a17d@oasis.local.home> User-Agent: Alpine 2.21 (DEB 202 2017-01-01) MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII X-Linutronix-Spam-Score: -1.0 X-Linutronix-Spam-Level: - X-Linutronix-Spam-Status: No , -1.0 points, 5.0 required, ALL_TRUSTED=-1,SHORTCIRCUIT=-0.0001 Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Fri, 26 Jul 2019, Steven Rostedt wrote: > On Fri, 26 Jul 2019 23:19:36 +0200 > Thomas Gleixner wrote: > > > CONFIG_PREEMPTION is selected by CONFIG_PREEMPT and by > > CONFIG_PREEMPT_RT. Both PREEMPT and PREEMPT_RT require the same > > functionality which today depends on CONFIG_PREEMPT. > > > > The following series adjusts the core and x86 code to use > > CONFIG_PREEMPTION where appropriate and extends the x86 dumpstack > > implementation to display PREEMPT_RT instead of PREEMPT on a RT > > enabled kernel. > > > > Hmm, I'm looking at v5.3-rc1 and I don't see a CONFIG_PREEMPTION > defined. And the first patch doesn't define it. Did I miss a patch > series that adds it? It came right after rc1. The initial commit renamed PREEMPT to PREEMPT_LL and seletced PREEMPT, but that broke defconfigs and make olddefconfig :( And in fact it was a good thing that I had to stare at all CONFIG_PREEMPT dependencies. Found some interesting things already :) Thanks, tglx