From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-pa0-f47.google.com (mail-pa0-f47.google.com [209.85.220.47]) by kanga.kvack.org (Postfix) with ESMTP id BA1056B0032 for ; Sat, 21 Sep 2013 15:20:15 -0400 (EDT) Received: by mail-pa0-f47.google.com with SMTP id kp14so711378pab.20 for ; Sat, 21 Sep 2013 12:20:15 -0700 (PDT) Date: Sat, 21 Sep 2013 21:13:17 +0200 From: Oleg Nesterov Subject: Re: [PATCH] hotplug: Optimize {get,put}_online_cpus() Message-ID: <20130921191317.GA15531@redhat.com> References: <1378805550-29949-1-git-send-email-mgorman@suse.de> <1378805550-29949-38-git-send-email-mgorman@suse.de> <20130917143003.GA29354@twins.programming.kicks-ass.net> <20130917162050.GK22421@suse.de> <20130917164505.GG12926@twins.programming.kicks-ass.net> <20130918154939.GZ26785@twins.programming.kicks-ass.net> <20130919143241.GB26785@twins.programming.kicks-ass.net> <20130921163404.GA8545@redhat.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20130921163404.GA8545@redhat.com> Sender: owner-linux-mm@kvack.org List-ID: To: Peter Zijlstra Cc: Mel Gorman , Rik van Riel , Srikar Dronamraju , Ingo Molnar , Andrea Arcangeli , Johannes Weiner , Linux-MM , LKML , Paul McKenney , Thomas Gleixner , Steven Rostedt On 09/21, Oleg Nesterov wrote: > > As for the patch itself, I am not sure. Forgot to mention... and with this patch cpu_hotplug_done() loses the "release" semantics, not sure this is fine. Oleg. -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: email@kvack.org From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752338Ab3IUTUX (ORCPT ); Sat, 21 Sep 2013 15:20:23 -0400 Received: from mx1.redhat.com ([209.132.183.28]:8293 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750899Ab3IUTUW (ORCPT ); Sat, 21 Sep 2013 15:20:22 -0400 Date: Sat, 21 Sep 2013 21:13:17 +0200 From: Oleg Nesterov To: Peter Zijlstra Cc: Mel Gorman , Rik van Riel , Srikar Dronamraju , Ingo Molnar , Andrea Arcangeli , Johannes Weiner , Linux-MM , LKML , Paul McKenney , Thomas Gleixner , Steven Rostedt Subject: Re: [PATCH] hotplug: Optimize {get,put}_online_cpus() Message-ID: <20130921191317.GA15531@redhat.com> References: <1378805550-29949-1-git-send-email-mgorman@suse.de> <1378805550-29949-38-git-send-email-mgorman@suse.de> <20130917143003.GA29354@twins.programming.kicks-ass.net> <20130917162050.GK22421@suse.de> <20130917164505.GG12926@twins.programming.kicks-ass.net> <20130918154939.GZ26785@twins.programming.kicks-ass.net> <20130919143241.GB26785@twins.programming.kicks-ass.net> <20130921163404.GA8545@redhat.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20130921163404.GA8545@redhat.com> User-Agent: Mutt/1.5.18 (2008-05-17) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 09/21, Oleg Nesterov wrote: > > As for the patch itself, I am not sure. Forgot to mention... and with this patch cpu_hotplug_done() loses the "release" semantics, not sure this is fine. Oleg.