Received: by 2002:a6b:500f:0:0:0:0:0 with SMTP id e15csp6217808iob; Tue, 10 May 2022 13:06:16 -0700 (PDT) X-Google-Smtp-Source: ABdhPJxBItKgnvxhdYuVGOboWJNx7QjoOEV/XbOqM0CZ/JhoHiPpUdvQ3LBs3clxi2nTY8Xe+92m X-Received: by 2002:a63:85c6:0:b0:3ab:4545:e29e with SMTP id u189-20020a6385c6000000b003ab4545e29emr17755927pgd.573.1652213176553; Tue, 10 May 2022 13:06:16 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1652213176; cv=none; d=google.com; s=arc-20160816; b=EQX0ahk+yn2nZJbktGS75t6BdGY+My1rflk2M9zUPdFDgPFKQLjYhYouaWwyJnGiqL OJ6Oynwb6H2w1x8KQ8/GnZMGukqsKJz/VuHzjhiCkNvgZD3+0FDF/x/2tubNtwiinYio oZ66gq720cduXk1DymVGqxI44uO43wkjc0Y3T7lswApeXwpwpFJWi7yJscQ3xkO23gcj fEFzGDY62eEHG6UjfWkXwZbt3do18/5EjuLxJ9IG3jn8XtCbwFksN/xeNGiaVe2U0WXP dfBLnFyW/ZgJEsfB9v9XxLOkkK3PGJSTWpJqYLqHGtYGVZy48+WlVw2J+Ha3gZQWes/7 +KoQ== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:content-transfer-encoding:mime-version :references:in-reply-to:message-id:subject:cc:to:from:date; bh=W6TwF9wxgs9RQ/RhSaM3RR5E5+p0h9Q2tVWgoRlbp04=; b=gNyu9shHuoqSZ3VoN2e31vsjGcC9SIEABau1S/PxbP9Htg4lWacK4ZwDVPLXWnv3y/ LS6xLr1S86RxMOSE8eibcgTA4bv8EFYUlEEDySCHAtJFQavaWzsFbEVmFiXxt7CFh8In n60hoasLLtJrICHIuZFtcv5ck3q3t69yKX0n5tNAKxWHZI8C89jx/AASB3HtGRzn4cHV NNsYYvYh8txiLQYzwzoAIcJUIyI2yShpXqDs7ubRDQYzUjQN0JXlfEStnp6f3dnjLKrB zxkJ2QDnWEiyYsrdebArYFfRs/P0GaHgKoc3qV5mexyfpfxaCitBYKbtY7PMXe2EBlQn SvoQ== ARC-Authentication-Results: i=1; mx.google.com; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Return-Path: Received: from out1.vger.email (out1.vger.email. [2620:137:e000::1:20]) by mx.google.com with ESMTP id v7-20020a170902b7c700b0015f20748e43si3679605plz.513.2022.05.10.13.06.00; Tue, 10 May 2022 13:06:16 -0700 (PDT) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) client-ip=2620:137:e000::1:20; Authentication-Results: mx.google.com; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1344440AbiEJOuD (ORCPT + 99 others); Tue, 10 May 2022 10:50:03 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:46850 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1344990AbiEJOt1 (ORCPT ); Tue, 10 May 2022 10:49:27 -0400 Received: from ams.source.kernel.org (ams.source.kernel.org [145.40.68.75]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id CB538B86F; Tue, 10 May 2022 07:09:51 -0700 (PDT) Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by ams.source.kernel.org (Postfix) with ESMTPS id 7E4BEB81B18; Tue, 10 May 2022 14:09:50 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 30DCBC385C2; Tue, 10 May 2022 14:09:48 +0000 (UTC) Date: Tue, 10 May 2022 10:09:46 -0400 From: Steven Rostedt To: "Paul E. McKenney" Cc: Uladzislau Rezki , Joel Fernandes , Alison Chaiken , Sebastian Andrzej Siewior , LKML , RCU , Frederic Weisbecker , Neeraj Upadhyay , Oleksiy Avramchenko Subject: Re: [PATCH] rcu/nocb: Add an option to ON/OFF an offloading from RT context Message-ID: <20220510100946.5fdff700@gandalf.local.home> In-Reply-To: <20220509183934.GQ1790663@paulmck-ThinkPad-P17-Gen-1> References: <20220506182425.GC1790663@paulmck-ThinkPad-P17-Gen-1> <20220507223247.GK1790663@paulmck-ThinkPad-P17-Gen-1> <20220508213222.GL1790663@paulmck-ThinkPad-P17-Gen-1> <20220509033740.GM1790663@paulmck-ThinkPad-P17-Gen-1> <20220509181417.GO1790663@paulmck-ThinkPad-P17-Gen-1> <20220509183934.GQ1790663@paulmck-ThinkPad-P17-Gen-1> X-Mailer: Claws Mail 3.17.8 (GTK+ 2.24.33; x86_64-pc-linux-gnu) MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit X-Spam-Status: No, score=-6.7 required=5.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,RCVD_IN_DNSWL_HI,SPF_HELO_NONE,SPF_PASS, T_SCC_BODY_TEXT_LINE autolearn=ham autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Mon, 9 May 2022 11:39:34 -0700 "Paul E. McKenney" wrote: > This allows your current RCU_NOCB_CPU_CB_BOOST with something like > this in place of the "default n": > > default y if PREEMPT_RT > default n if !PREEMPT_RT BTW, I don't think you need the !PREEMPT_RT, because all configs are 'n' by default. That is: default y if PREEMPT_RT should be good enough. -- Steve