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 Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id BF1BFC433F5 for ; Thu, 2 Dec 2021 02:03:54 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1350573AbhLBCHP (ORCPT ); Wed, 1 Dec 2021 21:07:15 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:37502 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232507AbhLBCHM (ORCPT ); Wed, 1 Dec 2021 21:07:12 -0500 Received: from mail-qt1-x82f.google.com (mail-qt1-x82f.google.com [IPv6:2607:f8b0:4864:20::82f]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 6A116C061574; Wed, 1 Dec 2021 18:03:51 -0800 (PST) Received: by mail-qt1-x82f.google.com with SMTP id l8so26114889qtk.6; Wed, 01 Dec 2021 18:03:51 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20210112; h=date:from:to:cc:subject:message-id:references:mime-version :content-disposition:in-reply-to; bh=o7Z9WafEYxT/72WTT9aIa0RjK6vq7gCdXsgRCMpQHj4=; b=mjccbCQ+Cp7Cl6vrMKshR7uny8yyNXGJT4B/MfPn8RTv07NO5wJDACeKrPS7ddSiPs 7QmFEjxbAT9zlQAzsP3D3jt7CXXgUFx8aJ9INP9O08Rc6vH31v+c7TlqXNCBSaXm1fBT VbYpyMvCqWcjJ6ssnd1BmNinXyXiaDbXt6wkTLeBZHOP99bEPzt0vS7OvE8JWLQS66L7 jOku9QUtn7ryHjcRuyblbDv9lovXid+IvHTTQQX5ZvdQgydvAEZcnl1eNsAYJwFgJ2aQ 2GD1CzWosaORXSumsmoqRiv6vWC9buIUXkGYNomEWOY00RCPBNO9Rh4WxuL8d6VhhPCk YOrA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:date:from:to:cc:subject:message-id:references :mime-version:content-disposition:in-reply-to; bh=o7Z9WafEYxT/72WTT9aIa0RjK6vq7gCdXsgRCMpQHj4=; b=UCGcO1DDmPjqgxumpS1TNs3Tn51LQ7+xAuEyxXtKz78wQRp5TDXvhXo/QapMO2IkZL fXiFWanQqP01bTGv6zq1kb3+uMU3soiKvmcL9EvaNN8MnqGykCSw91+hmEq429udPMh0 EUPJDpCYN4Pe+is9m5Xk0nE1KpkFKQtoBFW/UAmyPgkP3nqlCo1/LyPUD1E8jpE9JoDF N9jJecQB0iTCp2QYwdk+FxrzE44oq5+dFQoLiu13lORJTO48nXb7UrPQTk2Mly2p2sHb kaYM/3+vN+o2hle4bESlrQu3UnkQ8GqrgyIdY29PUuLqFVit7+6orubKHQqcAZX7OlmZ nZKA== X-Gm-Message-State: AOAM533EcqwSemMEcp6RcZpLiyUzf/gT2dT84zFZN1xsSGPpZ0LaAuUZ EtqINY1Oi8OCi8cMWFiWvFE= X-Google-Smtp-Source: ABdhPJxsvKS/0dqL3rzQaJ5EVLbYiMogssZPMNxBGhJTGML0Qtb+ae3G1LfooWvXDOeQ/EYV9e8tOg== X-Received: by 2002:a05:622a:1a9b:: with SMTP id s27mr11123489qtc.417.1638410630248; Wed, 01 Dec 2021 18:03:50 -0800 (PST) Received: from localhost ([66.216.211.25]) by smtp.gmail.com with ESMTPSA id e7sm867726qtx.72.2021.12.01.18.03.49 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 01 Dec 2021 18:03:49 -0800 (PST) Date: Wed, 1 Dec 2021 18:03:47 -0800 From: Yury Norov To: "Paul E. McKenney" Cc: rcu@vger.kernel.org, linux-kernel@vger.kernel.org, kernel-team@fb.com, mingo@kernel.org, jiangshanlai@gmail.com, akpm@linux-foundation.org, mathieu.desnoyers@efficios.com, josh@joshtriplett.org, tglx@linutronix.de, peterz@infradead.org, rostedt@goodmis.org, dhowells@redhat.com, edumazet@google.com, fweisbec@gmail.com, oleg@redhat.com, joel@joelfernandes.org Subject: Re: [PATCH rcu 0/18] RCU no-CBs CPU updates for v5.17 Message-ID: <20211202020347.GB430494@lapt> References: <20211202002848.GA3127439@paulmck-ThinkPad-P17-Gen-1> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20211202002848.GA3127439@paulmck-ThinkPad-P17-Gen-1> Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Wed, Dec 01, 2021 at 04:28:48PM -0800, Paul E. McKenney wrote: > Hello! ... > 17. Allow empty "rcu_nocbs" kernel parameter, courtesy of Frederic > Weisbecker. ... > Note that #17 might be updated given some ongoing work by Yury Norov > to support "none" for bitmaps, including the cpumask taken by the > rcu_nocbs kernel-boot parameter. Hi Paul, This is the only work that is needed to support 'none': https://lkml.org/lkml/2021/11/24/2642 >From the last discussion, it's not clear is this 'none' needed or not. If needed, I'll submit the patch. Thanks, Yury