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=-5.8 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,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 2DDBEC47082 for ; Thu, 3 Jun 2021 21:21:43 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 101C760FE5 for ; Thu, 3 Jun 2021 21:21:43 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229924AbhFCVX1 (ORCPT ); Thu, 3 Jun 2021 17:23:27 -0400 Received: from out2-smtp.messagingengine.com ([66.111.4.26]:56227 "EHLO out2-smtp.messagingengine.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229790AbhFCVX0 (ORCPT ); Thu, 3 Jun 2021 17:23:26 -0400 Received: from compute5.internal (compute5.nyi.internal [10.202.2.45]) by mailout.nyi.internal (Postfix) with ESMTP id 4F1695C0071; Thu, 3 Jun 2021 17:21:41 -0400 (EDT) Received: from imap35 ([10.202.2.85]) by compute5.internal (MEProxy); Thu, 03 Jun 2021 17:21:41 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=anarazel.de; h= mime-version:message-id:in-reply-to:references:date:from:to:cc :subject:content-type; s=fm1; bh=XwJZ1Qrwq2Ad70llPp988Nl7IcepFjp HsXsYGbVQhTE=; b=RispqkflI17cuT2skjfNAsoQ5+z+Jh/6D6UPAxAeSWeDToD WBzRUkU/TJeoSf3oxUDbjsDEZd0Fr0gDRoClKNyC7rm16r3BVb4PFvjiEzK0t4fj nVAIMl969LXgJfpgV97JkJSoKKW7SUpcAlz4UV/X9PJu8VBQBOqiLWdmfGxDUW3s 5W3E5EdMLDRlj+gEiwHLF7J0nBIoCUJb+D1NWafySpM/84P52Stl8tVnL4FscsEH dFQAaGniPCvYlGuJLJBelHkG3rBuNKiJ3QPOOydyWtpx2UhkTPzxgsudD8+k0C+K zUTVVtRrM8sbG0/JXVQh1tloylbso0gFJXndRVw== DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d= messagingengine.com; h=cc:content-type:date:from:in-reply-to :message-id:mime-version:references:subject:to:x-me-proxy :x-me-proxy:x-me-sender:x-me-sender:x-sasl-enc; s=fm3; bh=XwJZ1Q rwq2Ad70llPp988Nl7IcepFjpHsXsYGbVQhTE=; b=HzWH1FMZNnpImdXet+H2uK HC8G5Bn4rHH7M9sEDyrdn/mE4VHSYXQncoklSpUyj4Bal0jrohSrPefk5dhG5VgM 3EcQjceahs1ba+hLtp8xfqF3dYbUu14Yvm+kRJ9Inf2GDyb90ApCZP239oZ66cqx i846GIO8rY0Uunrpr9qdK5D6e5mVuZgK9GBzqOflZEXhtuViMmH+FvUjILzT8Di4 XieaKCutVtM5cPQhC+qXCp7vLNjOIZotjJDYxlsyUhnRWulTHbC8MTo8ObaDYIeX tr33Us8BDEFSbBxmjc7aG+k5eC2KqHbEkoqZHVK74xxLIemFn590RUvLkg7UVkQA == X-ME-Sender: X-ME-Proxy-Cause: gggruggvucftvghtrhhoucdtuddrgeduledrvdelledgudehlecutefuodetggdotefrod ftvfcurfhrohhfihhlvgemucfhrghsthforghilhdpqfgfvfdpuffrtefokffrpgfnqfgh necuuegrihhlohhuthemuceftddtnecusecvtfgvtghiphhivghnthhsucdlqddutddtmd enucfjughrpefofgggkfgjfhffhffvufgtsehttdertderredtnecuhfhrohhmpedftehn ughrvghsucfhrhgvuhhnugdfuceorghnughrvghssegrnhgrrhgriigvlhdruggvqeenuc ggtffrrghtthgvrhhnpeetgedvvdffgefhjeetveetveefgeffudduffegtdeujedvjeel gfevgedukeefvdenucevlhhushhtvghrufhiiigvpedtnecurfgrrhgrmhepmhgrihhlfh hrohhmpegrnhgurhgvshesrghnrghrrgiivghlrdguvg X-ME-Proxy: Received: by mailuser.nyi.internal (Postfix, from userid 501) id 34FC115A005F; Thu, 3 Jun 2021 17:21:40 -0400 (EDT) X-Mailer: MessagingEngine.com Webmail Interface User-Agent: Cyrus-JMAP/3.5.0-alpha0-519-g27a961944e-fm-20210531.001-g27a96194 Mime-Version: 1.0 Message-Id: <16ead1e9-f07f-4a13-a066-122eca998d74@www.fastmail.com> In-Reply-To: <20210603211012.GA68208@worktop.programming.kicks-ass.net> References: <409a624c-de75-0ee5-b65f-ee09fff34809@gmail.com> <5ab4c8bd-3e82-e87b-1ae8-3b32ced72009@gmail.com> <87sg211ccj.ffs@nanos.tec.linutronix.de> <20210603190338.gfykgkc7ac2akvdt@alap3.anarazel.de> <20210603211012.GA68208@worktop.programming.kicks-ass.net> Date: Thu, 03 Jun 2021 14:21:15 -0700 From: "Andres Freund" To: "Peter Zijlstra" Cc: "Thomas Gleixner" , "Pavel Begunkov" , "Jens Axboe" , io-uring@vger.kernel.org, "Ingo Molnar" , "Darren Hart" , "Davidlohr Bueso" , linux-kernel@vger.kernel.org Subject: Re: [RFC 4/4] io_uring: implement futex wait Content-Type: text/plain Precedence: bulk List-ID: X-Mailing-List: io-uring@vger.kernel.org Hi, On Thu, Jun 3, 2021, at 14:10, Peter Zijlstra wrote: > On Thu, Jun 03, 2021 at 12:03:38PM -0700, Andres Freund wrote: > > On 2021-06-01 23:53:00 +0200, Thomas Gleixner wrote: > > > You surely made your point that this is well thought out. > > > > Really impressed with your effort to generously interpret the first > > version of a proof of concept patch that explicitly was aimed at getting > > feedback on the basic design and the different use cases. > > You *completely* failed to describe any. I'm with tglx; I see no reason > to even look at the patches. If you don't have a problem, you don't need > a solution. Note that this is not my patch, and I hadn't posted anything on the thread when Thomas sent that email? So I'm not sure what you're even referring to here as me having failed to do. If you think the explanation of my use cases I have since sent is insufficient, I'm happy to reply to that/expand on them, but you're going to have to be a bit more specific on why I "failed to describe any". I just don't see why a simple "what's the use case" wouldn't be a lot more productive than this posturing. Particularly on a thread that is explicitly inviting people from outside the core kernel dev community to chime in. Andres