From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from smtp1.linuxfoundation.org (smtp1.linux-foundation.org [172.17.192.35]) by mail.linuxfoundation.org (Postfix) with ESMTPS id 0AC09950 for ; Tue, 26 Jul 2016 13:35:57 +0000 (UTC) Received: from mx0a-001b2d01.pphosted.com (mx0a-001b2d01.pphosted.com [148.163.156.1]) by smtp1.linuxfoundation.org (Postfix) with ESMTPS id 8AFEB150 for ; Tue, 26 Jul 2016 13:35:56 +0000 (UTC) Received: from pps.filterd (m0098396.ppops.net [127.0.0.1]) by mx0a-001b2d01.pphosted.com (8.16.0.11/8.16.0.11) with SMTP id u6QDXqd3002064 for ; Tue, 26 Jul 2016 09:35:56 -0400 Received: from e17.ny.us.ibm.com (e17.ny.us.ibm.com [129.33.205.207]) by mx0a-001b2d01.pphosted.com with ESMTP id 24dsrnff9a-1 (version=TLSv1.2 cipher=AES256-SHA bits=256 verify=NOT) for ; Tue, 26 Jul 2016 09:35:55 -0400 Received: from localhost by e17.ny.us.ibm.com with IBM ESMTP SMTP Gateway: Authorized Use Only! Violators will be prosecuted for from ; Tue, 26 Jul 2016 09:35:54 -0400 Received: from b01cxnp23032.gho.pok.ibm.com (b01cxnp23032.gho.pok.ibm.com [9.57.198.27]) by d01dlp02.pok.ibm.com (Postfix) with ESMTP id 261426E8040 for ; Tue, 26 Jul 2016 09:35:32 -0400 (EDT) Received: from d01av01.pok.ibm.com (d01av01.pok.ibm.com [9.56.224.215]) by b01cxnp23032.gho.pok.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id u6QDZuJb54067384 for ; Tue, 26 Jul 2016 13:35:56 GMT Received: from d01av01.pok.ibm.com (localhost [127.0.0.1]) by d01av01.pok.ibm.com (8.14.4/8.14.4/NCO v10.0 AVout) with ESMTP id u6QDZoIu025153 for ; Tue, 26 Jul 2016 09:35:51 -0400 Date: Tue, 26 Jul 2016 06:35:51 -0700 From: "Paul E. McKenney" To: Alan Stern Reply-To: paulmck@linux.vnet.ibm.com References: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: Message-Id: <20160726133551.GU7094@linux.vnet.ibm.com> Cc: jakub@redhat.com, parri.andrea@gmail.com, ksummit-discuss@lists.linuxfoundation.org, peterz@infradead.org, ramana.radhakrishnan@arm.com, luc.maranget@inria.fr, j.alglave@ucl.ac.uk Subject: Re: [Ksummit-discuss] [TECH TOPIC] Memory model, using ISO C++11 atomic ops List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , On Tue, Jul 26, 2016 at 09:10:32AM -0400, Alan Stern wrote: > On Tue, 26 Jul 2016, Hannes Reinecke wrote: > > > I have been playing around with RCUs and memory barriers quite a lot > > recently, and found some really 'odd' use-cases in the kernel which > > would benefit from improvements here. > > Could you post one or two examples? It would be interesting to see > what they involve. I would be intersted as well! Thanx, Paul