Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752746AbdHNWoI (ORCPT ); Mon, 14 Aug 2017 18:44:08 -0400 Received: from mail-pg0-f41.google.com ([74.125.83.41]:34337 "EHLO mail-pg0-f41.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752677AbdHNWoG (ORCPT ); Mon, 14 Aug 2017 18:44:06 -0400 Date: Mon, 14 Aug 2017 15:44:04 -0700 (PDT) From: David Rientjes X-X-Sender: rientjes@chino.kir.corp.google.com To: Roman Gushchin cc: linux-mm@kvack.org, Michal Hocko , Vladimir Davydov , Johannes Weiner , Tetsuo Handa , Tejun Heo , kernel-team@fb.com, cgroups@vger.kernel.org, linux-doc@vger.kernel.org, linux-kernel@vger.kernel.org Subject: Re: [v5 3/4] mm, oom: introduce oom_priority for memory cgroups In-Reply-To: <20170814183213.12319-4-guro@fb.com> Message-ID: References: <20170814183213.12319-1-guro@fb.com> <20170814183213.12319-4-guro@fb.com> User-Agent: Alpine 2.10 (DEB 1266 2009-07-14) MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 978 Lines: 27 On Mon, 14 Aug 2017, Roman Gushchin wrote: > Introduce a per-memory-cgroup oom_priority setting: an integer number > within the [-10000, 10000] range, which defines the order in which > the OOM killer selects victim memory cgroups. > > OOM killer prefers memory cgroups with larger priority if they are > populated with elegible tasks. > > The oom_priority value is compared within sibling cgroups. > > The root cgroup has the oom_priority 0, which cannot be changed. > > Signed-off-by: Roman Gushchin > Cc: Michal Hocko > Cc: Vladimir Davydov > Cc: Johannes Weiner > Cc: David Rientjes > Cc: Tejun Heo > Cc: Tetsuo Handa > Cc: kernel-team@fb.com > Cc: cgroups@vger.kernel.org > Cc: linux-doc@vger.kernel.org > Cc: linux-kernel@vger.kernel.org > Cc: linux-mm@kvack.org Tested-by: David Rientjes