From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S965962Ab2EODCL (ORCPT ); Mon, 14 May 2012 23:02:11 -0400 Received: from fgwmail5.fujitsu.co.jp ([192.51.44.35]:58643 "EHLO fgwmail5.fujitsu.co.jp" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S965954Ab2EODBy (ORCPT ); Mon, 14 May 2012 23:01:54 -0400 X-SecurityPolicyCheck: OK by SHieldMailChecker v1.7.4 Message-ID: <4FB1C6A1.1020602@jp.fujitsu.com> Date: Tue, 15 May 2012 11:59:45 +0900 From: KAMEZAWA Hiroyuki User-Agent: Mozilla/5.0 (Windows NT 6.0; rv:12.0) Gecko/20120428 Thunderbird/12.0.1 MIME-Version: 1.0 To: Glauber Costa CC: linux-kernel@vger.kernel.org, cgroups@vger.kernel.org, linux-mm@kvack.org, Tejun Heo , Li Zefan , Greg Thelen , Suleiman Souhlal , Michal Hocko , Johannes Weiner , devel@openvz.org, Frederic Weisbecker , Li Zefan , Aditya Kali , Oleg Nesterov , Kay Sievers , Tim Hockin , Tejun Heo , Andrew Morton Subject: Re: [PATCH v2 11/29] cgroups: ability to stop res charge propagation on bounded ancestor References: <1336758272-24284-1-git-send-email-glommer@parallels.com> <1336758272-24284-12-git-send-email-glommer@parallels.com> In-Reply-To: <1336758272-24284-12-git-send-email-glommer@parallels.com> Content-Type: text/plain; charset=ISO-2022-JP Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org (2012/05/12 2:44), Glauber Costa wrote: > From: Frederic Weisbecker > > Moving a task from a cgroup to another may require to substract its > resource charge from the old cgroup and add it to the new one. > > For this to happen, the uncharge/charge propagation can just stop when we > reach the common ancestor for the two cgroups. Further the performance > reasons, we also want to avoid to temporarily overload the common > ancestors with a non-accurate resource counter usage if we charge first > the new cgroup and uncharge the old one thereafter. This is going to be a > requirement for the coming max number of task subsystem. > > To solve this, provide a pair of new API that can charge/uncharge a > resource counter until we reach a given ancestor. > > Signed-off-by: Frederic Weisbecker > Acked-by: Paul Menage > Acked-by: Glauber Costa > Cc: Li Zefan > Cc: Johannes Weiner > Cc: Aditya Kali > Cc: Oleg Nesterov > Cc: Kay Sievers > Cc: Tim Hockin > Cc: Tejun Heo > Acked-by: Kirill A. Shutemov > Signed-off-by: Andrew Morton Where is this function called in this series ? Thanks, -Kame From mboxrd@z Thu Jan 1 00:00:00 1970 From: KAMEZAWA Hiroyuki Subject: Re: [PATCH v2 11/29] cgroups: ability to stop res charge propagation on bounded ancestor Date: Tue, 15 May 2012 11:59:45 +0900 Message-ID: <4FB1C6A1.1020602@jp.fujitsu.com> References: <1336758272-24284-1-git-send-email-glommer@parallels.com> <1336758272-24284-12-git-send-email-glommer@parallels.com> Mime-Version: 1.0 Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <1336758272-24284-12-git-send-email-glommer@parallels.com> Sender: owner-linux-mm@kvack.org List-ID: Content-Type: text/plain; charset="us-ascii" To: Glauber Costa Cc: linux-kernel@vger.kernel.org, cgroups@vger.kernel.org, linux-mm@kvack.org, Tejun Heo , Li Zefan , Greg Thelen , Suleiman Souhlal , Michal Hocko , Johannes Weiner , devel@openvz.org, Frederic Weisbecker , Li Zefan , Aditya Kali , Oleg Nesterov , Kay Sievers , Tim Hockin , Tejun Heo , Andrew Morton (2012/05/12 2:44), Glauber Costa wrote: > From: Frederic Weisbecker > > Moving a task from a cgroup to another may require to substract its > resource charge from the old cgroup and add it to the new one. > > For this to happen, the uncharge/charge propagation can just stop when we > reach the common ancestor for the two cgroups. Further the performance > reasons, we also want to avoid to temporarily overload the common > ancestors with a non-accurate resource counter usage if we charge first > the new cgroup and uncharge the old one thereafter. This is going to be a > requirement for the coming max number of task subsystem. > > To solve this, provide a pair of new API that can charge/uncharge a > resource counter until we reach a given ancestor. > > Signed-off-by: Frederic Weisbecker > Acked-by: Paul Menage > Acked-by: Glauber Costa > Cc: Li Zefan > Cc: Johannes Weiner > Cc: Aditya Kali > Cc: Oleg Nesterov > Cc: Kay Sievers > Cc: Tim Hockin > Cc: Tejun Heo > Acked-by: Kirill A. Shutemov > Signed-off-by: Andrew Morton Where is this function called in this series ? Thanks, -Kame -- 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/ . Fight unfair telecom internet charges in Canada: sign http://stopthemeter.ca/ Don't email: email@kvack.org