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=-2.3 required=3.0 tests=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 62056C433FF for ; Wed, 14 Aug 2019 15:58:28 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 3D7B32133F for ; Wed, 14 Aug 2019 15:58:28 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727867AbfHNP61 (ORCPT ); Wed, 14 Aug 2019 11:58:27 -0400 Received: from 216-12-86-13.cv.mvl.ntelos.net ([216.12.86.13]:47256 "EHLO brightrain.aerifal.cx" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1725828AbfHNP60 (ORCPT ); Wed, 14 Aug 2019 11:58:26 -0400 Received: from dalias by brightrain.aerifal.cx with local (Exim 3.15 #2) id 1hxvfK-0005VF-00; Wed, 14 Aug 2019 15:58:22 +0000 Date: Wed, 14 Aug 2019 11:58:22 -0400 From: Rich Felker To: Christian Brauner Cc: linux-kernel@vger.kernel.org, libc-alpha@sourceware.org, oleg@redhat.com, alistair23@gmail.com, ebiederm@xmission.com, arnd@arndb.de, torvalds@linux-foundation.org, adhemerval.zanella@linaro.org, fweimer@redhat.com, palmer@sifive.com, macro@wdc.com, zongbox@gmail.com, akpm@linux-foundation.org, viro@zeniv.linux.org.uk, hpa@zytor.com Subject: Re: [PATCH v3 0/1] waitid: process group enhancement Message-ID: <20190814155822.GI9017@brightrain.aerifal.cx> References: <20190814154400.6371-1-christian.brauner@ubuntu.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20190814154400.6371-1-christian.brauner@ubuntu.com> User-Agent: Mutt/1.5.21 (2010-09-15) Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Wed, Aug 14, 2019 at 05:43:59PM +0200, Christian Brauner wrote: > Hey everyone, > > This patch adds support for waiting on the current process group by > specifying waitid(P_PGID, 0, ...) as discussed in [1]. The details why > we need to do this are in the commit message of [PATCH 1/1] so I won't > repeat them here. > > I've picked this up since the thread has gone stale and parts of > userspace are actually blocked by this. > > Note that the patch has been changed to be more closely aligned with the > P_PIDFD changes to waitid() I have sitting in my for-next branch (cf. [2]). > This makes the merge conflict a little simpler and picks up on the > coding style discussions that guided the P_PIDFD patchset. > > There was some desire to get this feature in with 5.3 (cf. [3]). > But given that this is a new feature for waitid() and for the sake of > avoiding any merge conflicts I would prefer to land this in the 5.4 > merge window together with the P_PIDFD changes. That makes 5.4 (or later, depending on other stuff) the hard minimum for RV32 ABI. Is that acceptable? I was under the impression (perhaps mistaken) that 5.3 was going to be next LTS series which is why I'd like to have the necessary syscalls for a complete working RV32 userspace in it. If I'm wrong about that please ignore me. :-) Rich