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=-0.8 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS 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 81CEEC28CBC for ; Wed, 6 May 2020 09:13:09 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 5AC092078C for ; Wed, 6 May 2020 09:13:09 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729133AbgEFJNI (ORCPT ); Wed, 6 May 2020 05:13:08 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:56976 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-FAIL-OK-FAIL) by vger.kernel.org with ESMTP id S1729122AbgEFJNH (ORCPT ); Wed, 6 May 2020 05:13:07 -0400 Received: from Galois.linutronix.de (Galois.linutronix.de [IPv6:2a0a:51c0:0:12e:550::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 5199DC061A0F for ; Wed, 6 May 2020 02:13:07 -0700 (PDT) Received: from p5de0bf0b.dip0.t-ipconnect.de ([93.224.191.11] helo=nanos.tec.linutronix.de) by Galois.linutronix.de with esmtpsa (TLS1.2:DHE_RSA_AES_256_CBC_SHA256:256) (Exim 4.80) (envelope-from ) id 1jWG6W-0008BD-DS; Wed, 06 May 2020 11:12:36 +0200 Received: by nanos.tec.linutronix.de (Postfix, from userid 1000) id 845FE1001F5; Wed, 6 May 2020 11:12:35 +0200 (CEST) From: Thomas Gleixner To: Borislav Petkov Cc: LKML , x86@kernel.org, "Paul E. McKenney" , Andy Lutomirski , Alexandre Chartre , Frederic Weisbecker , Paolo Bonzini , Sean Christopherson , Masami Hiramatsu , Petr Mladek , Steven Rostedt , Joel Fernandes , Boris Ostrovsky , Juergen Gross , Brian Gerst , Mathieu Desnoyers , Josh Poimboeuf , Will Deacon , "Peter Zijlstra \(Intel\)" Subject: Re: [patch V4 part 1 03/36] sched: Clean up scheduler_ipi() In-Reply-To: <20200506084019.GB25532@zn.tnic> References: <20200505131602.633487962@linutronix.de> <20200505134058.361859938@linutronix.de> <20200506084019.GB25532@zn.tnic> Date: Wed, 06 May 2020 11:12:35 +0200 Message-ID: <87ftcdo29o.fsf@nanos.tec.linutronix.de> MIME-Version: 1.0 Content-Type: text/plain 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 Borislav Petkov writes: > On Tue, May 05, 2020 at 03:16:05PM +0200, Thomas Gleixner wrote: >> The scheduler IPI has grown weird and wonderful over the years, time >> for spring cleaning. >> >> Move all the non-trivial stuff out of it and into a regular smp function >> call IPI. This then reduces the schedule_ipi() to most of it's former MOP > > s/MOP/NOP/ after clarifying it on IRC. :) It was NOP long ago. Now it's Minimal OPeration :)