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=-7.3 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI, NICE_REPLY_A,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,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 7741EC433E0 for ; Mon, 8 Mar 2021 11:53:27 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 24426651D1 for ; Mon, 8 Mar 2021 11:53:27 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229737AbhCHLwy (ORCPT ); Mon, 8 Mar 2021 06:52:54 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:50684 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229528AbhCHLwZ (ORCPT ); Mon, 8 Mar 2021 06:52:25 -0500 Received: from hr2.samba.org (hr2.samba.org [IPv6:2a01:4f8:192:486::2:0]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 8CDD3C06174A; Mon, 8 Mar 2021 03:52:22 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=samba.org; s=42; h=Date:Message-ID:From:Cc:To; bh=czRKeaftASrqoaZ+92Ke1GRtQ0i0HcRE6l6XeTFk4j0=; b=woyKu8ag9LVTEOQ/I/vzcWeRvS 25LRKDFA1jR44SuNNJ2aoHb38QKJ4GG7NF7HuvmJBZBMvTEm4eTenMD2PHt0pQFuKIK5pQApIMw6h 2+1/Yt5ZqZHg5pj3FeWqEG3EuEwFz7I3KlqKJDqK0wKste47YTLCmRr2cLAvrUVHPjwLaOU1VGFT0 bGQIX9B95PQwyjuFVWzOEZQHOML9HtrOr17tYwlZ4mFj5T41Ju71UR/yl6/ONOwF6qDStQEVDXdmi DVP7XvegL1cOhl+1XfwQgKactRUaHhLP2pVYonF2Ss/zi496DkslUkZPAdXqs4MDCR2HCX1LWBKB3 Cn9L1AaG+/rZzfB2iK+uYlRR4PRD2ESbmnkJ9BuE6fC5z+AFAWgsZt+0neD/xg7Y56BXyQoxGBA92 9Mu7fbC+8qFBNVCQbqwgP8sDzAKQmtuaUtHscrNYdtYNsdn9eZV4IBEeEx7jiHrVZ0FQQ+zyXIgm8 gzyoNyqBmC10+GsRllu3dL+0; Received: from [127.0.0.2] (localhost [127.0.0.1]) by hr2.samba.org with esmtpsa (TLS1.3:ECDHE_RSA_CHACHA20_POLY1305:256) (Exim) id 1lJEQp-0000cn-Kq; Mon, 08 Mar 2021 11:52:15 +0000 Subject: Re: [RFC PATCH v2 00/13] Add futex2 syscall To: Daurnimator Cc: =?UTF-8?Q?Andr=c3=a9_Almeida?= , Thomas Gleixner , Ingo Molnar , Peter Zijlstra , Darren Hart , linux-kernel@vger.kernel.org, Steven Rostedt , Sebastian Andrzej Siewior , kernel@collabora.com, krisman@collabora.com, pgriffais@valvesoftware.com, z.figura12@gmail.com, joel@joelfernandes.org, malteskarupke@fastmail.fm, linux-api@vger.kernel.org, Florian Weimer , GNU C Library , linux-kselftest@vger.kernel.org, shuah@kernel.org, Arnaldo Carvalho de Melo , corbet@lwn.net, io-uring References: <20210304004219.134051-1-andrealmeid@collabora.com> From: Stefan Metzmacher Message-ID: Date: Mon, 8 Mar 2021 12:52:14 +0100 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:78.0) Gecko/20100101 Thunderbird/78.7.1 MIME-Version: 1.0 In-Reply-To: Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: 7bit Precedence: bulk List-ID: X-Mailing-List: io-uring@vger.kernel.org Am 07.03.21 um 12:56 schrieb Daurnimator: > On Sun, 7 Mar 2021 at 22:35, Stefan Metzmacher wrote: >> Instead of having a blocked futex_waitv() waiting on an fd (maybe a generic eventfd() or a new futex2fd()) >> would be a better interface? > > Like bring back FUTEX_FD? (which was removed back in 2.6.25) Ah, ok, yes something like that. But as that was removed because of races, but might not be a good idea to bring it back. metze