From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from psmtp.com (na3sys010amx205.postini.com [74.125.245.205]) by kanga.kvack.org (Postfix) with SMTP id 96A7B6B004A for ; Tue, 13 Mar 2012 03:07:49 -0400 (EDT) Received: from /spool/local by e28smtp07.in.ibm.com with IBM ESMTP SMTP Gateway: Authorized Use Only! Violators will be prosecuted for from ; Tue, 13 Mar 2012 12:37:44 +0530 Received: from d28av01.in.ibm.com (d28av01.in.ibm.com [9.184.220.63]) by d28relay02.in.ibm.com (8.13.8/8.13.8/NCO v10.0) with ESMTP id q2D77bru2031638 for ; Tue, 13 Mar 2012 12:37:39 +0530 Received: from d28av01.in.ibm.com (loopback [127.0.0.1]) by d28av01.in.ibm.com (8.14.4/8.13.1/NCO v10.0 AVout) with ESMTP id q2DCbNtB005403 for ; Tue, 13 Mar 2012 18:07:24 +0530 From: "Aneesh Kumar K.V" Subject: [PATCH -V3 0/8] memcg: Add memcg extension to control HugeTLB allocation Date: Tue, 13 Mar 2012 12:37:04 +0530 Message-Id: <1331622432-24683-1-git-send-email-aneesh.kumar@linux.vnet.ibm.com> Sender: owner-linux-mm@kvack.org List-ID: To: linux-mm@kvack.org, mgorman@suse.de, kamezawa.hiroyu@jp.fujitsu.com, dhillf@gmail.com, aarcange@redhat.com, mhocko@suse.cz, akpm@linux-foundation.org, hannes@cmpxchg.org Cc: linux-kernel@vger.kernel.org, cgroups@vger.kernel.org Hi, This patchset implements a memory controller extension to control HugeTLB allocations. The extension allows to limit the HugeTLB usage per control group and enforces the controller limit during page fault. Since HugeTLB doesn't support page reclaim, enforcing the limit at page fault time implies that, the application will get SIGBUS signal if it tries to access HugeTLB pages beyond its limit. This requires the application to know beforehand how much HugeTLB pages it would require for its use. Changes from V2: * Changed the implementation to limit the HugeTLB usage during page fault time. This simplifies the extension and keep it closer to memcg design. This also allows to support cgroup removal with less complexity. Only caveat is the application should ensure its HugeTLB usage doesn't cross the cgroup limit. Changes from V1: * Changed the implementation as a memcg extension. We still use the same logic to track the cgroup and range. Changes from RFC post: * Added support for HugeTLB cgroup hierarchy * Added support for task migration * Added documentation patch * Other bug fixes -aneesh -- 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