Received: by 2002:ac0:a582:0:0:0:0:0 with SMTP id m2-v6csp4691284imm; Tue, 9 Oct 2018 03:52:03 -0700 (PDT) X-Google-Smtp-Source: ACcGV638JsQ0Ge3kYlu74dnORVvnZ+44F6mZYi3/Su6jz6bEVRqM39FKngLUhAmH5V4hPpf4dN6b X-Received: by 2002:a63:f848:: with SMTP id v8-v6mr24646942pgj.82.1539082323498; Tue, 09 Oct 2018 03:52:03 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1539082323; cv=none; d=google.com; s=arc-20160816; b=j4KKbh5I6mK61c5X/YRKx4GXEFFk4wzQeDsFkiq8BBjMmEe3INacM/FrdgaFN7q2zR HEDB74Qo1B+b5+IGnbEtroPLFPXFeQlbyZbT7mzFhcWx8e49IHb7Z8JDapGhN5wBBjdQ JNLPh5O/L83HdbSOdq7j6G8o7vo6LWf2MGsAQuRu9LqfzJVOPEv/ySbMFajegB9sddzg yl+a2kCpt3SqEgAnQ7ZfJBSZ/y5YSi62yD1GCZD0SiAIUizF1C4bCSazDUDLaN39izOf f4moUcYzLREdkixcO0Yzt4noNLsRvYGpEUebpDfiF5jd3wdAOBOTRXHAe5GcfIocl9k2 Z+lw== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:sender:user-agent:in-reply-to :content-disposition:mime-version:references:message-id:subject:cc :to:from:date; bh=zGyKT/KQOB9+f+KhbNx/v9Q9X1WB3W1GRY1NE00ActY=; b=Jnl5Fwgk6Vq8mnrc9cUdYWxPVyOCNGoOPdO5LOfhZbfMAuvAWudYZjrDCwlu9+Ht24 3Fgtk9Y4x+T3nbjk/+qnj1HuDmipVdVP4YsnVDaRPoVYuDWDCXuV9qRX7XtsdMt0Bc/Y yhBs6Beg898aSVgr4XkUa8UlbJYzzg+adkgmSOg5g7VYqetxmzXhrX/N9VgLFewL17hL BxtkMQIzT0fw9mK+HIVWUmFfehmbjnQEx+5XzzxJsN3d8NTb3+WN1Z/UFbBIiEEnuZ8o rA+rdvj5IDt3a1wQiEUDCyveiYV1ouOAHHNHT6tgKvbH0Q1Cieg8uusB9f9GtvQ5h3SL 2JgA== ARC-Authentication-Results: i=1; mx.google.com; spf=pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Return-Path: Received: from vger.kernel.org (vger.kernel.org. [209.132.180.67]) by mx.google.com with ESMTP id b35-v6si19750520pgl.235.2018.10.09.03.51.49; Tue, 09 Oct 2018 03:52:03 -0700 (PDT) Received-SPF: pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) client-ip=209.132.180.67; Authentication-Results: mx.google.com; spf=pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726664AbeJISHq (ORCPT + 99 others); Tue, 9 Oct 2018 14:07:46 -0400 Received: from Galois.linutronix.de ([146.0.238.70]:43029 "EHLO Galois.linutronix.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1725947AbeJISHq (ORCPT ); Tue, 9 Oct 2018 14:07:46 -0400 Received: from bigeasy by Galois.linutronix.de with local (Exim 4.80) (envelope-from ) id 1g9pbc-0001ft-Hq; Tue, 09 Oct 2018 12:51:12 +0200 Date: Tue, 9 Oct 2018 12:51:12 +0200 From: Sebastian Andrzej Siewior To: Juri Lelli Cc: peterz@infradead.org, mingo@redhat.com, rostedt@goodmis.org, tglx@linutronix.de, linux-kernel@vger.kernel.org, luca.abeni@santannapisa.it, claudio@evidence.eu.com, tommaso.cucinotta@santannapisa.it, alessio.balsini@gmail.com, bristot@redhat.com, will.deacon@arm.com, andrea.parri@amarulasolutions.com, dietmar.eggemann@arm.com, patrick.bellasi@arm.com, henrik@austad.us, linux-rt-users@vger.kernel.org Subject: Re: [RFD/RFC PATCH 0/8] Towards implementing proxy execution Message-ID: <20181009105112.bhqlrabdt5ae5qmm@linutronix.de> References: <20181009092434.26221-1-juri.lelli@redhat.com> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline In-Reply-To: <20181009092434.26221-1-juri.lelli@redhat.com> User-Agent: NeoMutt/20180716 Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 2018-10-09 11:24:26 [+0200], Juri Lelli wrote: > The main concerns I have with the current approach is that, being based > on mutex.c, it's both > > - not linked with futexes > - not involving "legacy" priority inheritance (rt_mutex.c) > > I believe one of the main reasons Peter started this on mutexes is to > have better coverage of potential problems (which I can assure everybody > it had). I'm not yet sure what should we do moving forward, and this is > exactly what I'd be pleased to hear your opinions on. wasn't the idea that once it works to get rid of rt_mutex? Sebastian