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=-2.1 required=3.0 tests=DKIM_INVALID,DKIM_SIGNED, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_PASS,USER_AGENT_MUTT 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 058D5C43441 for ; Wed, 10 Oct 2018 10:57:29 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id A0E6A2075C for ; Wed, 10 Oct 2018 10:57:28 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="signature verification failed" (2048-bit key) header.d=infradead.org header.i=@infradead.org header.b="dLqN7+vk" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org A0E6A2075C Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=infradead.org Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726670AbeJJSTD (ORCPT ); Wed, 10 Oct 2018 14:19:03 -0400 Received: from merlin.infradead.org ([205.233.59.134]:59784 "EHLO merlin.infradead.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726503AbeJJSTD (ORCPT ); Wed, 10 Oct 2018 14:19:03 -0400 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=merlin.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:Resent-Date: Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Id: List-Help:List-Unsubscribe:List-Subscribe:List-Post:List-Owner:List-Archive; bh=63oqnFkd/F82AU79+z6Cbi920zPcIqocGOCjN9vvNc4=; b=dLqN7+vkdknSBIvASrNv5pEtG fsF2Mdg6ZIp9dgoRrKJJn++2QK/Hii9Sdfc/FH3WygBoloM/fzZYZifcj9kD0I208DcgT1+BuzHfr OZk3MqbskBwsxaoiluYCwqBTRL/Q1/Twj/MJ5rEmisL5qVbqQ0ghcg2mpjgR79CCzxiJIE/HgvRLD TPIkSKFXmMzGtlc8Tg8djq2JPCsOarEaCoqZOAlgCD3YHOMLKXRKgr1M/m7SxFspCdj04XFA1HAsk MhSHsIS/qZiSr5IikPpo7ILSi37SwuVUYOfekDLu5xsHF9zi/09udUMkHgqdTqJS66S0aqM0rMN/d f3T3+V/rw==; Received: from j217100.upc-j.chello.nl ([24.132.217.100] helo=hirez.programming.kicks-ass.net) by merlin.infradead.org with esmtpsa (Exim 4.90_1 #2 (Red Hat Linux)) id 1gACAy-0004e2-5r; Wed, 10 Oct 2018 10:57:12 +0000 Received: by hirez.programming.kicks-ass.net (Postfix, from userid 1000) id DCEDE20298C11; Wed, 10 Oct 2018 12:57:10 +0200 (CEST) Date: Wed, 10 Oct 2018 12:57:10 +0200 From: Peter Zijlstra To: luca abeni Cc: Juri Lelli , mingo@redhat.com, rostedt@goodmis.org, tglx@linutronix.de, linux-kernel@vger.kernel.org, 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: <20181010105710.GP5728@hirez.programming.kicks-ass.net> References: <20181009092434.26221-1-juri.lelli@redhat.com> <20181010123417.26c682ef@luca64> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20181010123417.26c682ef@luca64> User-Agent: Mutt/1.10.1 (2018-07-13) Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Wed, Oct 10, 2018 at 12:34:17PM +0200, luca abeni wrote: > So, I would propose to make the proxy() function of patch more generic, > and not strictly bound to mutexes. Maybe a task structure can contain a > list of tasks for which the task can act as a proxy, and we can have a > function like "I want to act as a proxy for task T" to be invoked when > a task blocks? Certainly possible, but that's something I'd prefer to look at after it all 'works'. The mutex blocking thing doesn't require external interfaces etc..