From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S964816AbbEUN0I (ORCPT ); Thu, 21 May 2015 09:26:08 -0400 Received: from foss.arm.com ([217.140.101.70]:41255 "EHLO foss.arm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S964798AbbEUN0E (ORCPT ); Thu, 21 May 2015 09:26:04 -0400 Date: Thu, 21 May 2015 14:25:57 +0100 From: Catalin Marinas To: "Paul E. McKenney" Cc: Will Deacon , "tglx@linutronix.de" , "laijs@cn.fujitsu.com" , "bobby.prani@gmail.com" , "peterz@infradead.org" , "fweisbec@gmail.com" , "dvhart@linux.intel.com" , "oleg@redhat.com" , "linux-kernel@vger.kernel.org" , "rostedt@goodmis.org" , "josh@joshtriplett.org" , "dhowells@redhat.com" , "edumazet@google.com" , "mathieu.desnoyers@efficios.com" , "dipankar@in.ibm.com" , "akpm@linux-foundation.org" , "mingo@kernel.org" , "linux-arm-kernel@lists.infradead.org" Subject: Re: [PATCH tip/core/rcu 7/9] arm64: Use common outgoing-CPU-notification code Message-ID: <20150521132557.GK29424@e104818-lin.cambridge.arm.com> References: <20150512214945.GA813@linux.vnet.ibm.com> <1431467407-1223-1-git-send-email-paulmck@linux.vnet.ibm.com> <1431467407-1223-7-git-send-email-paulmck@linux.vnet.ibm.com> <20150521085806.GC21920@arm.com> <20150521124833.GJ6776@linux.vnet.ibm.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20150521124833.GJ6776@linux.vnet.ibm.com> User-Agent: Mutt/1.5.23 (2014-03-12) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Thu, May 21, 2015 at 05:48:33AM -0700, Paul E. McKenney wrote: > On Thu, May 21, 2015 at 09:58:06AM +0100, Will Deacon wrote: > > On Tue, May 12, 2015 at 10:50:05PM +0100, Paul E. McKenney wrote: > > > From: "Paul E. McKenney" > > > > > > This commit removes the open-coded CPU-offline notification with new > > > common code. In particular, this change avoids calling scheduler code > > > using RCU from an offline CPU that RCU is ignoring. This is a minimal > > > change. A more intrusive change might invoke the cpu_check_up_prepare() > > > and cpu_set_state_online() functions at CPU-online time, which would > > > allow onlining throw an error if the CPU did not go offline properly. > > > > > > Signed-off-by: Paul E. McKenney > > > Cc: linux-arm-kernel@lists.infradead.org > > > Cc: Catalin Marinas > > > Cc: Will Deacon > > > --- > > > arch/arm64/kernel/smp.c | 6 ++---- > > > 1 file changed, 2 insertions(+), 4 deletions(-) > > > > I don't have a better idea, so: > > > > Acked-by: Will Deacon > > > > Is this queued via -tip already, or can we pick it into the arm64 tree > > for 4.2? > > Feel free to take it into the arm64 tree. Just let me know, and I > will drop it from my tree. Queued for 4.2. Thanks. -- Catalin