From: Kamezawa Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
To: Glauber Costa <glommer@parallels.com>
Cc: linux-mm@kvack.org, cgroups@vger.kernel.org,
Mel Gorman <mgorman@suse.de>, Tejun Heo <tj@kernel.org>,
Andrew Morton <akpm@linux-foundation.org>,
Michal Hocko <mhocko@suse.cz>,
Johannes Weiner <hannes@cmpxchg.org>,
Christoph Lameter <cl@linux.com>,
David Rientjes <rientjes@google.com>,
Pekka Enberg <penberg@kernel.org>,
devel@openvz.org, linux-kernel@vger.kernel.org,
Pekka Enberg <penberg@cs.helsinki.fi>
Subject: Re: [PATCH v5 06/14] memcg: kmem controller infrastructure
Date: Wed, 17 Oct 2012 15:40:46 +0900 [thread overview]
Message-ID: <507E52EE.7080706@jp.fujitsu.com> (raw)
In-Reply-To: <1350382611-20579-7-git-send-email-glommer@parallels.com>
(2012/10/16 19:16), Glauber Costa wrote:
> This patch introduces infrastructure for tracking kernel memory pages to
> a given memcg. This will happen whenever the caller includes the flag
> __GFP_KMEMCG flag, and the task belong to a memcg other than the root.
>
> In memcontrol.h those functions are wrapped in inline acessors. The
> idea is to later on, patch those with static branches, so we don't incur
> any overhead when no mem cgroups with limited kmem are being used.
>
> Users of this functionality shall interact with the memcg core code
> through the following functions:
>
> memcg_kmem_newpage_charge: will return true if the group can handle the
> allocation. At this point, struct page is not
> yet allocated.
>
> memcg_kmem_commit_charge: will either revert the charge, if struct page
> allocation failed, or embed memcg information
> into page_cgroup.
>
> memcg_kmem_uncharge_page: called at free time, will revert the charge.
>
> [ v2: improved comments and standardized function names ]
> [ v3: handle no longer opaque, functions not exported,
> even more comments ]
> [ v4: reworked Used bit handling and surroundings for more clarity ]
> [ v5: simplified code for kmemcg compiled out and core functions in
> memcontrol.c, moved kmem code to the middle to avoid forward decls ]
>
> Signed-off-by: Glauber Costa <glommer@parallels.com>
> Acked-by: Michal Hocko <mhocko@suse.cz>
> CC: Christoph Lameter <cl@linux.com>
> CC: Pekka Enberg <penberg@cs.helsinki.fi>
> CC: Kamezawa Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
> CC: Johannes Weiner <hannes@cmpxchg.org>
> CC: Tejun Heo <tj@kernel.org>
Acked-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
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next prev parent reply other threads:[~2012-10-17 6:41 UTC|newest]
Thread overview: 70+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-10-16 10:16 [PATCH v5 00/14] kmem controller for memcg Glauber Costa
2012-10-16 10:16 ` [PATCH v5 01/14] memcg: Make it possible to use the stock for more than one page Glauber Costa
2012-10-17 22:11 ` Andrew Morton
2012-10-18 16:54 ` Glauber Costa
2012-10-16 10:16 ` [PATCH v5 02/14] memcg: Reclaim when more than one page needed Glauber Costa
2012-10-17 21:46 ` David Rientjes
2012-10-16 10:16 ` [PATCH v5 03/14] memcg: change defines to an enum Glauber Costa
2012-10-17 21:50 ` David Rientjes
2012-10-16 10:16 ` [PATCH v5 04/14] kmem accounting basic infrastructure Glauber Costa
2012-10-16 12:14 ` Michal Hocko
2012-10-17 22:08 ` David Rientjes
2012-10-18 17:01 ` Glauber Costa
2012-10-18 19:47 ` Tejun Heo
2012-10-18 19:37 ` Tejun Heo
2012-10-17 22:12 ` Andrew Morton
2012-10-18 17:03 ` Glauber Costa
2012-10-16 10:16 ` [PATCH v5 05/14] Add a __GFP_KMEMCG flag Glauber Costa
2012-10-16 12:15 ` Michal Hocko
2012-10-17 22:09 ` David Rientjes
2012-10-16 10:16 ` [PATCH v5 06/14] memcg: kmem controller infrastructure Glauber Costa
2012-10-17 6:40 ` Kamezawa Hiroyuki [this message]
2012-10-17 22:12 ` Andrew Morton
2012-10-18 9:16 ` Glauber Costa
2012-10-18 22:06 ` David Rientjes
2012-10-19 9:10 ` Glauber Costa
2012-10-19 9:31 ` David Rientjes
2012-10-19 10:00 ` Glauber Costa
2012-10-17 22:37 ` David Rientjes
2012-10-18 9:23 ` Glauber Costa
2012-10-18 21:59 ` David Rientjes
2012-10-19 10:08 ` Glauber Costa
2012-10-19 20:34 ` David Rientjes
2012-10-22 12:34 ` Glauber Costa
2012-10-22 12:51 ` Michal Hocko
2012-10-22 12:52 ` Glauber Costa
2012-10-16 10:16 ` [PATCH v5 07/14] mm: Allocate kernel pages to the right memcg Glauber Costa
2012-10-16 15:31 ` Christoph Lameter
2012-10-16 18:55 ` Glauber Costa
2012-10-17 22:12 ` Andrew Morton
2012-10-18 9:24 ` Glauber Costa
2012-10-18 20:44 ` Andrew Morton
2012-10-18 11:53 ` Glauber Costa
2012-10-17 22:43 ` David Rientjes
2012-10-16 10:16 ` [PATCH v5 08/14] res_counter: return amount of charges after res_counter_uncharge Glauber Costa
2012-10-17 23:23 ` David Rientjes
2012-10-16 10:16 ` [PATCH v5 09/14] memcg: kmem accounting lifecycle management Glauber Costa
2012-10-17 23:28 ` David Rientjes
2012-10-18 6:14 ` Michal Hocko
2012-10-18 9:42 ` Glauber Costa
2012-10-16 10:16 ` [PATCH v5 10/14] memcg: use static branches when code not in use Glauber Costa
2012-10-16 10:16 ` [PATCH v5 11/14] memcg: allow a memcg with kmem charges to be destructed Glauber Costa
2012-10-17 22:12 ` Andrew Morton
2012-10-18 9:33 ` Glauber Costa
2012-10-16 10:16 ` [PATCH v5 12/14] execute the whole memcg freeing in free_worker Glauber Costa
2012-10-17 6:56 ` Kamezawa Hiroyuki
2012-10-16 10:16 ` [PATCH v5 13/14] protect architectures where THREAD_SIZE >= PAGE_SIZE against fork bombs Glauber Costa
2012-10-17 22:12 ` Andrew Morton
2012-10-18 9:37 ` Glauber Costa
2012-10-16 10:16 ` [PATCH v5 14/14] Add documentation about the kmem controller Glauber Costa
2012-10-16 12:23 ` Michal Hocko
2012-10-16 18:25 ` Christoph Lameter
2012-10-16 18:55 ` Aristeu Rozanski
2012-10-16 19:02 ` Glauber Costa
2012-10-16 19:30 ` Christoph Lameter
2012-10-17 22:12 ` Andrew Morton
2012-10-18 9:38 ` Glauber Costa
2012-10-17 22:11 ` [PATCH v5 00/14] kmem controller for memcg Andrew Morton
2012-10-18 16:51 ` Glauber Costa
2012-10-18 19:21 ` Andrew Morton
2012-10-19 9:55 ` Glauber Costa
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