linux-kernel - Re: [PATCH V3 7/8] memcg: disable memcg page stat accounting code when not in use

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Message-ID: <50DCF0B1.4060000@jp.fujitsu.com>
Date:	Fri, 28 Dec 2012 10:06:57 +0900
From:	Kamezawa Hiroyuki <kamezawa.hiroyu@...fujitsu.com>
To:	Sha Zhengju <handai.szj@...il.com>
CC:	linux-kernel@...r.kernel.org, cgroups@...r.kernel.org,
	linux-mm@...ck.org, mhocko@...e.cz, akpm@...ux-foundation.org,
	gthelen@...gle.com, fengguang.wu@...el.com, glommer@...allels.com,
	Sha Zhengju <handai.szj@...bao.com>
Subject: Re: [PATCH V3 7/8] memcg: disable memcg page stat accounting code
 when not in use

(2012/12/26 2:27), Sha Zhengju wrote:
> From: Sha Zhengju <handai.szj@...bao.com>
> 
> It's inspired by a similar optimization from Glauber Costa
> (memcg: make it suck faster; https://lkml.org/lkml/2012/9/25/154).
> Here we use jump label to patch the memcg page stat accounting code
> in or out when not used. when the first non-root memcg comes to
> life the code is patching in otherwise it is out.
> 
> Signed-off-by: Sha Zhengju <handai.szj@...bao.com>

Acked-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@...fujitsu.com>


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