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=-10.8 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS autolearn=ham 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 AAE74C47082 for ; Mon, 7 Jun 2021 11:48:55 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 7BAA3611AD for ; Mon, 7 Jun 2021 11:48:55 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230314AbhFGLup (ORCPT ); Mon, 7 Jun 2021 07:50:45 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:45668 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230237AbhFGLuo (ORCPT ); Mon, 7 Jun 2021 07:50:44 -0400 Received: from casper.infradead.org (casper.infradead.org [IPv6:2001:8b0:10b:1236::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id B75A9C061766; Mon, 7 Jun 2021 04:48:53 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=casper.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; bh=2PdD+uZkEIFyxVLFUWbMDdnRWGm9uGD+q1DCn4KEBK4=; b=XKFQnZaVgxCnah3Wz+h3maJZqX 0LDGmKOJlx8eg9N4zZRzZXA77bXMfxzDuxZtVHDk3kXz9TlupQ8oIlMQ9A1AAO7DpTCCf6yQlVd6U xgCMD2PzA4RihWKDCwjKQQqDjWpl58WBDQnEvYa+60o+1sCZo6y4vC8uGFVHX7/sW6M9MIAJ4Bq1w rhHf9mMy8gZYoODWKFnmaJrRAkU5GHjltQsF3bwLMWVIIcjXvfgXAJ5NRc6K9ioRKXynxqJ8GQ7Wq lvJsLFGblWWUEpHhcTPYv57SXoUvOlMV1WH38fvlD0crItxycJyvW3p5JY8qBcH8krpdAllCjo4CM RAslP1Zg==; Received: from j217100.upc-j.chello.nl ([24.132.217.100] helo=noisy.programming.kicks-ass.net) by casper.infradead.org with esmtpsa (Exim 4.94 #2 (Red Hat Linux)) id 1lqDk4-00Fh8A-0r; Mon, 07 Jun 2021 11:48:30 +0000 Received: from hirez.programming.kicks-ass.net (hirez.programming.kicks-ass.net [192.168.1.225]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits)) (Client did not present a certificate) by noisy.programming.kicks-ass.net (Postfix) with ESMTPS id EFA2230018A; Mon, 7 Jun 2021 13:48:26 +0200 (CEST) Received: by hirez.programming.kicks-ass.net (Postfix, from userid 1000) id 9B1162DBA4A0B; Mon, 7 Jun 2021 13:48:26 +0200 (CEST) Date: Mon, 7 Jun 2021 13:48:26 +0200 From: Peter Zijlstra To: Pavel Begunkov Cc: Thomas Gleixner , Andres Freund , 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 Message-ID: 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> <87v96tywcb.ffs@nanos.tec.linutronix.de> <131a59af-a625-27b3-433e-ff8b7c36753e@gmail.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <131a59af-a625-27b3-433e-ff8b7c36753e@gmail.com> Precedence: bulk List-ID: X-Mailing-List: io-uring@vger.kernel.org On Mon, Jun 07, 2021 at 12:31:48PM +0100, Pavel Begunkov wrote: > On 6/5/21 1:43 AM, Thomas Gleixner wrote: > > Andres, > > > > On Thu, Jun 03 2021 at 12:03, 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. > > > > feedback on what? > > > > There is absolutely no description of design and obviously there is no > > use case either. So what do you expect me to be generous about? > > That's a complete fallacy, the very RFC is about clarifying a > use case that I was hinted about, not mentioning those I described > you in a reply. Obviously Then consider this: Nacked-by: Peter Zijlstra (Intel) for anything touching futex.c, until such time that you can provide a coherent description of what and why you're doing things.