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From: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
To: linux-mm@kvack.org
Cc: cgroups@vger.kernel.org, Johannes Weiner <hannes@cmpxchg.org>,
	Michal Hocko <mhocko@suse.cz>, Hugh Dickins <hughd@google.com>,
	Han Ying <yinghan@google.com>,
	Glauber Costa <glommer@parallels.com>,
	"Aneesh Kumar K.V" <aneesh.kumar@linux.vnet.ibm.com>,
	Andrew Morton <akpm@linux-foundation.org>,
	suleiman@google.com, n-horiguchi@ah.jp.nec.com,
	khlebnikov@openvz.org, Tejun Heo <tj@kernel.org>
Subject: [RFC][PATCH 0/3] page cgroup diet
Date: Mon, 19 Mar 2012 16:56:21 +0900	[thread overview]
Message-ID: <4F66E6A5.10804@jp.fujitsu.com> (raw)

This is just an RFC...test is not enough yet.

I know it's merge window..this post is just for sharing idea.

This patch merges pc->flags and pc->mem_cgroup into a word. Then,
memcg's overhead will be 8bytes per page(4096bytes?).

Because this patch will affect all memory cgroup developers, I'd like to
show patches before MM Summit. I think we can agree the direction to
reduce size of page_cgroup..and finally integrate into 'struct page'
(and remove cgroup_disable= boot option...)

Patch 1/3 - introduce pc_to_mem_cgroup and hide pc->mem_cgroup
Patch 2/3 - remove pc->mem_cgroup
Patch 3/3 - remove memory barriers.

I'm now wondering when this change should be merged....


Thanks,
-Kame

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             reply	other threads:[~2012-03-19  7:56 UTC|newest]

Thread overview: 32+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2012-03-19  7:56 KAMEZAWA Hiroyuki [this message]
2012-03-19  7:59 ` [RFC][PATCH 1/3] memcg: add methods to access pc->mem_cgroup KAMEZAWA Hiroyuki
2012-03-19 10:58   ` Glauber Costa
2012-03-19 12:11     ` KAMEZAWA Hiroyuki
2012-03-19 12:11       ` KAMEZAWA Hiroyuki
2012-03-19 12:29       ` Glauber Costa
2012-03-19 15:33     ` Michal Hocko
2012-03-19 15:33       ` Michal Hocko
2012-03-19 15:34       ` Glauber Costa
2012-03-21  1:06       ` KAMEZAWA Hiroyuki
2012-03-21  1:06         ` KAMEZAWA Hiroyuki
2012-03-22 13:11   ` Michal Hocko
2012-03-22 13:11     ` Michal Hocko
2012-03-19  8:01 ` [RFC][PATCH 2/3] memcg: reduce size of struct page_cgroup KAMEZAWA Hiroyuki
2012-03-19 22:20   ` Suleiman Souhlal
2012-03-21  0:47     ` KAMEZAWA Hiroyuki
2012-03-21  0:47       ` KAMEZAWA Hiroyuki
2012-03-22 13:11   ` Michal Hocko
2012-03-22 13:11     ` Michal Hocko
2012-03-19  8:03 ` [RFC][PATCH 3/3] memcg: atomic update of memcg pointer and other bits KAMEZAWA Hiroyuki
2012-03-19  8:03   ` KAMEZAWA Hiroyuki
2012-03-22 13:38   ` Michal Hocko
2012-03-23  1:03     ` KAMEZAWA Hiroyuki
2012-03-23  8:54       ` Michal Hocko
2012-03-19 19:59 ` [RFC][PATCH 0/3] page cgroup diet Konstantin Khlebnikov
2012-03-19 19:59   ` Konstantin Khlebnikov
2012-03-21  1:02   ` KAMEZAWA Hiroyuki
2012-03-21  1:02     ` KAMEZAWA Hiroyuki
2012-03-21  6:13     ` Konstantin Khlebnikov
2012-03-21  6:13       ` Konstantin Khlebnikov
2012-03-21  6:30       ` KAMEZAWA Hiroyuki
2012-03-21  6:30         ` KAMEZAWA Hiroyuki

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