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=-2.1 required=3.0 tests=DKIM_INVALID,DKIM_SIGNED, 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 65A66C0650F for ; Mon, 5 Aug 2019 15:51:11 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 359BF2173C for ; Mon, 5 Aug 2019 15:51:11 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="signature verification failed" (2048-bit key) header.d=infradead.org header.i=@infradead.org header.b="QBJ+a+oj" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728847AbfHEPvJ (ORCPT ); Mon, 5 Aug 2019 11:51:09 -0400 Received: from merlin.infradead.org ([205.233.59.134]:51716 "EHLO merlin.infradead.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726847AbfHEPvJ (ORCPT ); Mon, 5 Aug 2019 11:51:09 -0400 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=merlin.20170209; h=In-Reply-To:Content-Type:MIME-Version: References:Message-ID:Subject:Cc:To:From:Date:Sender:Reply-To: Content-Transfer-Encoding:Content-ID:Content-Description:Resent-Date: Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Id: List-Help:List-Unsubscribe:List-Subscribe:List-Post:List-Owner:List-Archive; bh=J86VQUOlgDcHLUjKAqG9vpLO0JAk0UrPFVfhyhBABUk=; b=QBJ+a+oj8g01YOkFtYKgs7DSC EUUTLfh97fkqizXMvtQy54xyETp+PHpwh0/vIZTlao4dcMoMcfkgDPJLC70aj+GoAG7SQcayjAe+u Drn6vyMK0jZ4HVTGW50GfoqExW1x7kj5Ydo8Q2PK7Xavi4bxB2inUTSIFLZvZhj2P4JJ9rTW4Q2UZ VYLUz/hhwGzD3Xmmm9m59ldxtKhQWpWnnCnmSrs7toYjUTd0UyW1NNi+ShwRdOsHpaGaYZp2goryQ vL8sMZeJsK8WwFWQ12E56hiAYJI+crOvvq5pWOoLQmmhMSIIvDc0Edq0lZqYpf5bqWw9dDMZaBpEj RRmUkGmrg==; Received: from j217100.upc-j.chello.nl ([24.132.217.100] helo=hirez.programming.kicks-ass.net) by merlin.infradead.org with esmtpsa (Exim 4.92 #3 (Red Hat Linux)) id 1hufFi-00021U-Q1; Mon, 05 Aug 2019 15:50:26 +0000 Received: by hirez.programming.kicks-ass.net (Postfix, from userid 1000) id 13394201E9F1C; Mon, 5 Aug 2019 17:50:24 +0200 (CEST) Date: Mon, 5 Aug 2019 17:50:24 +0200 From: Peter Zijlstra To: "Paul E. McKenney" Cc: rcu@vger.kernel.org, linux-kernel@vger.kernel.org, mingo@kernel.org, jiangshanlai@gmail.com, dipankar@in.ibm.com, akpm@linux-foundation.org, mathieu.desnoyers@efficios.com, josh@joshtriplett.org, tglx@linutronix.de, rostedt@goodmis.org, dhowells@redhat.com, edumazet@google.com, fweisbec@gmail.com, oleg@redhat.com, joel@joelfernandes.org Subject: Re: [PATCH RFC tip/core/rcu 14/14] rcu/nohz: Make multi_cpu_stop() enable tick on all online CPUs Message-ID: <20190805155024.GK2332@hirez.programming.kicks-ass.net> References: <20190802151435.GA1081@linux.ibm.com> <20190802151501.13069-14-paulmck@linux.ibm.com> <20190804144317.GF2349@hirez.programming.kicks-ass.net> <20190804144835.GB2386@hirez.programming.kicks-ass.net> <20190804184159.GC28441@linux.ibm.com> <20190805080531.GH2349@hirez.programming.kicks-ass.net> <20190805145448.GI28441@linux.ibm.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20190805145448.GI28441@linux.ibm.com> User-Agent: Mutt/1.10.1 (2018-07-13) Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Mon, Aug 05, 2019 at 07:54:48AM -0700, Paul E. McKenney wrote: > > Right; so clearly we're not understanding what's happening. That seems > > like a requirement for actually doing a patch. > > Almost but not quite. It is a requirement for a patch *that* *is* > *supposed* *to* *be* *a* *fix*. If you are trying to prohibit me from > writing experimental patches, please feel free to take a long walk on > a short pier. > > Understood??? Ah, my bad, I thought you were actually proposing this as an actual patch. I now see that is my bad, I'd overlooked the RFC part.