From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-1.0 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_PASS autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 301ADC10F11 for ; Wed, 10 Apr 2019 19:13:56 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 0CD352082A for ; Wed, 10 Apr 2019 19:13:56 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726517AbfDJTNz (ORCPT ); Wed, 10 Apr 2019 15:13:55 -0400 Received: from mx1.redhat.com ([209.132.183.28]:59224 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1725981AbfDJTNy (ORCPT ); Wed, 10 Apr 2019 15:13:54 -0400 Received: from smtp.corp.redhat.com (int-mx01.intmail.prod.int.phx2.redhat.com [10.5.11.11]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mx1.redhat.com (Postfix) with ESMTPS id 4E259316891D; Wed, 10 Apr 2019 19:13:54 +0000 (UTC) Received: from llong.com (ovpn-120-189.rdu2.redhat.com [10.10.120.189]) by smtp.corp.redhat.com (Postfix) with ESMTP id C3138600CC; Wed, 10 Apr 2019 19:13:49 +0000 (UTC) From: Waiman Long To: Tejun Heo , Li Zefan , Johannes Weiner , Jonathan Corbet , Michal Hocko , Vladimir Davydov Cc: linux-kernel@vger.kernel.org, cgroups@vger.kernel.org, linux-doc@vger.kernel.org, linux-mm@kvack.org, Andrew Morton , Roman Gushchin , Shakeel Butt , Kirill Tkhai , Aaron Lu , Waiman Long Subject: [RFC PATCH 0/2] mm/memcontrol: Finer-grained memory control Date: Wed, 10 Apr 2019 15:13:19 -0400 Message-Id: <20190410191321.9527-1-longman@redhat.com> X-Scanned-By: MIMEDefang 2.79 on 10.5.11.11 X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.5.110.41]); Wed, 10 Apr 2019 19:13:54 +0000 (UTC) Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org The current control mechanism for memory cgroup v2 lumps all the memory together irrespective of the type of memory objects. However, there are cases where users may have more concern about one type of memory usage than the others. We have customer request to limit memory consumption on anonymous memory only as they said the feature was available in other OSes like Solaris. To allow finer-grained control of memory, this patchset 2 new control knobs for memory controller: - memory.subset.list for specifying the type of memory to be under control. - memory.subset.high for the high limit of memory consumption of that memory type. For simplicity, the limit is not hierarchical and applies to only tasks in the local memory cgroup. Waiman Long (2): mm/memcontrol: Finer-grained control for subset of allocated memory mm/memcontrol: Add a new MEMCG_SUBSET_HIGH event Documentation/admin-guide/cgroup-v2.rst | 35 +++++++++ include/linux/memcontrol.h | 8 ++ mm/memcontrol.c | 100 +++++++++++++++++++++++- 3 files changed, 142 insertions(+), 1 deletion(-) -- 2.18.1