From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from e31.co.us.ibm.com (e31.co.us.ibm.com [32.97.110.149]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (Client CN "e31.co.us.ibm.com", Issuer "Equifax" (not verified)) by ozlabs.org (Postfix) with ESMTPS id 5D818B704E for ; Sun, 17 Jun 2012 06:57:51 +1000 (EST) Received: from /spool/local by e31.co.us.ibm.com with IBM ESMTP SMTP Gateway: Authorized Use Only! Violators will be prosecuted for from ; Sat, 16 Jun 2012 14:57:46 -0600 Received: from d03relay03.boulder.ibm.com (d03relay03.boulder.ibm.com [9.17.195.228]) by d03dlp03.boulder.ibm.com (Postfix) with ESMTP id 2261B19D804C for ; Sat, 16 Jun 2012 20:57:42 +0000 (WET) Received: from d03av01.boulder.ibm.com (d03av01.boulder.ibm.com [9.17.195.167]) by d03relay03.boulder.ibm.com (8.13.8/8.13.8/NCO v10.0) with ESMTP id q5GKvhkp176604 for ; Sat, 16 Jun 2012 14:57:44 -0600 Received: from d03av01.boulder.ibm.com (loopback [127.0.0.1]) by d03av01.boulder.ibm.com (8.14.4/8.13.1/NCO v10.0 AVout) with ESMTP id q5GKvgYV001616 for ; Sat, 16 Jun 2012 14:57:43 -0600 Date: Sat, 16 Jun 2012 13:57:38 -0700 From: "Paul E. McKenney" To: Peter Zijlstra Subject: Re: [RFC PATCH 09/10] POWERPC: smp: remove call to ipi_call_lock()/ipi_call_unlock() Message-ID: <20120616205738.GM2420@linux.vnet.ibm.com> References: <1338275765-3217-1-git-send-email-yong.zhang0@gmail.com> <1338275765-3217-10-git-send-email-yong.zhang0@gmail.com> <20120616163219.GI2420@linux.vnet.ibm.com> <1339867858.15222.12.camel@twins> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii In-Reply-To: <1339867858.15222.12.camel@twins> Cc: axboe@kernel.dk, sshtylyov@mvista.com, nikunj@linux.vnet.ibm.com, david.daney@cavium.com, linux-kernel@vger.kernel.org, ralf@linux-mips.org, akpm@linux-foundation.org, Yong Zhang , Paul Mackerras , srivatsa.bhat@linux.vnet.ibm.com, tglx@linutronix.de, linuxppc-dev@lists.ozlabs.org, mingo@kernel.org Reply-To: paulmck@linux.vnet.ibm.com List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , On Sat, Jun 16, 2012 at 07:30:58PM +0200, Peter Zijlstra wrote: > On Sat, 2012-06-16 at 09:32 -0700, Paul E. McKenney wrote: > > However, there is an effort to get rid of stop_machine() from the > > CPU-down path... So something else will be needed. > > Elsewhere in this thread I mentioned we could do a synchronize_sched(). > I think that covers most of what stop-machine is doing these days. Ah, apologies for the noise! Thanx, Paul