linux-kernel - Re: [RFC][PATCH 5/5] memcg: drain per cpu stock

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Message-ID: <20090831111146.GJ4770@balbir.in.ibm.com>
Date:	Mon, 31 Aug 2009 16:41:46 +0530
From:	Balbir Singh <balbir@...ux.vnet.ibm.com>
To:	KAMEZAWA Hiroyuki <kamezawa.hiroyu@...fujitsu.com>
Cc:	"linux-mm@...ck.org" <linux-mm@...ck.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"nishimura@....nes.nec.co.jp" <nishimura@....nes.nec.co.jp>
Subject: Re: [RFC][PATCH 5/5] memcg: drain per cpu stock

* KAMEZAWA Hiroyuki <kamezawa.hiroyu@...fujitsu.com> [2009-08-28 13:28:09]:

> 
> Add function for dropping per-cpu stock of charges.
> This is called when
> 	- cpu is unplugged.
> 	- force_empty
> 	- recalim seems to be not easy.
> 
> Signed-off-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@...fujitsu.com>

The complexity of this patch and additional code make percpu_counter
more attractive. Why not work on percpu_counter if that is not as good
as we expect it to be and in turn help other exploiters as well.
-- 
	Balbir
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