From mboxrd@z Thu Jan 1 00:00:00 1970 From: Tejun Heo Subject: [GIT PULL] cgroup hierarchy changes for v3.7-rc1 Date: Tue, 2 Oct 2012 16:44:07 +0900 Message-ID: <20121002074407.GD6144@localhost> Mime-Version: 1.0 Return-path: DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=sender:date:from:to:cc:subject:message-id:mime-version:content-type :content-disposition:user-agent; bh=NXpGm2Jt7EAsl2DxQi0xGPgaUAOw6vX6e1o+EY96y+E=; b=ayNysdrOZby6Ru4K3UIPDDfPD29C223R9AwwekY0yb/YWDwh9/rMOQs/pbg7gOJNc+ virrAjSw4KD40Sdso5NWC+pe5bRCwbaFzjENnwGk7xvYCqI08+gh0fKQ5LJwp5M7yxSN KHo0K6drvokSDL7Poz57Ha54khEDQaWGS13Mt/0a7t6mOrEBvzeScuYBP3Vw4AzcYJ1Q 4xt91vPw5WGykXaJo/e1CQyeH5GUxPHDkmaBS1Q5FYZ3knAmkmasxpB2bcy4jHN+VXSl oVh8DCw1NR8auMv4Sb0qd/WTvmc5vZOotZ3m41htFiRNRGdCaD83fyJweLHX76ZSlTg5 eEYg== Content-Disposition: inline Sender: owner-linux-mm@kvack.org List-ID: Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: Linus Torvalds Cc: linux-kernel@vger.kernel.org, Michal Hocko , Johannes Weiner , Balbir Singh , KAMEZAWA Hiroyuki , cgroups@vger.kernel.org, linux-mm@kvack.org, Li Zefan Hello, This is another v3.7-rc1 pull request for cgroup. Currently, different cgroup subsystems handle nested cgroups completely differently. There's no consistency among subsystems and the behaviors often are outright broken. People at least seem to agree that the broken hierarhcy behaviors need to be weeded out if any progress is gonna be made on this front and that the fallouts from deprecating the broken behaviors should be acceptable especially given that the current behaviors don't make much sense when nested. This patch makes cgroup emit warning messages if cgroups for subsystems with broken hierarchy behavior are nested to prepare for fixing them in the future. This was put in a separate branch because more related changes were expected (didn't make it this round) and the memory cgroup wanted to pull in this and make changes on top. git://git.kernel.org/pub/scm/linux/kernel/git/tj/cgroup.git for-3.7-hierarchy Thanks. Tejun Heo (1): cgroup: mark subsystems with broken hierarchy support and whine if cgroups are nested for them block/blk-cgroup.c | 8 ++++++++ include/linux/cgroup.h | 15 +++++++++++++++ kernel/cgroup.c | 12 +++++++++++- kernel/cgroup_freezer.c | 8 ++++++++ kernel/events/core.c | 7 +++++++ mm/memcontrol.c | 7 +++++++ net/core/netprio_cgroup.c | 12 +++++++++++- net/sched/cls_cgroup.c | 9 +++++++++ security/device_cgroup.c | 9 +++++++++ 9 files changed, 85 insertions(+), 2 deletions(-) -- tejun -- 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 S1753370Ab2JBHoR (ORCPT ); Tue, 2 Oct 2012 03:44:17 -0400 Received: from mail-pb0-f46.google.com ([209.85.160.46]:55282 "EHLO mail-pb0-f46.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753113Ab2JBHoP (ORCPT ); Tue, 2 Oct 2012 03:44:15 -0400 Date: Tue, 2 Oct 2012 16:44:07 +0900 From: Tejun Heo To: Linus Torvalds Cc: linux-kernel@vger.kernel.org, Michal Hocko , Johannes Weiner , Balbir Singh , KAMEZAWA Hiroyuki , cgroups@vger.kernel.org, linux-mm@kvack.org, Li Zefan Subject: [GIT PULL] cgroup hierarchy changes for v3.7-rc1 Message-ID: <20121002074407.GD6144@localhost> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline User-Agent: Mutt/1.5.20 (2009-06-14) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hello, This is another v3.7-rc1 pull request for cgroup. Currently, different cgroup subsystems handle nested cgroups completely differently. There's no consistency among subsystems and the behaviors often are outright broken. People at least seem to agree that the broken hierarhcy behaviors need to be weeded out if any progress is gonna be made on this front and that the fallouts from deprecating the broken behaviors should be acceptable especially given that the current behaviors don't make much sense when nested. This patch makes cgroup emit warning messages if cgroups for subsystems with broken hierarchy behavior are nested to prepare for fixing them in the future. This was put in a separate branch because more related changes were expected (didn't make it this round) and the memory cgroup wanted to pull in this and make changes on top. git://git.kernel.org/pub/scm/linux/kernel/git/tj/cgroup.git for-3.7-hierarchy Thanks. Tejun Heo (1): cgroup: mark subsystems with broken hierarchy support and whine if cgroups are nested for them block/blk-cgroup.c | 8 ++++++++ include/linux/cgroup.h | 15 +++++++++++++++ kernel/cgroup.c | 12 +++++++++++- kernel/cgroup_freezer.c | 8 ++++++++ kernel/events/core.c | 7 +++++++ mm/memcontrol.c | 7 +++++++ net/core/netprio_cgroup.c | 12 +++++++++++- net/sched/cls_cgroup.c | 9 +++++++++ security/device_cgroup.c | 9 +++++++++ 9 files changed, 85 insertions(+), 2 deletions(-) -- tejun