linux-kernel - Re: [PATCH 3/4] plist: shrink struct plist

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Message-ID: <4D12B04A.3030705@cn.fujitsu.com>
Date:	Thu, 23 Dec 2010 10:13:30 +0800
From:	Lai Jiangshan <laijs@...fujitsu.com>
To:	Ingo Molnar <mingo@...e.hu>, Thomas Gleixner <tglx@...utronix.de>,
	Steven Rostedt <rostedt@...dmis.org>
CC:	Peter Zijlstra <peterz@...radead.org>,
	John Kacur <jkacur@...hat.com>,
	James Bottomley <James.Bottomley@...e.de>,
	"Rafael J. Wysocki" <rjw@...k.pl>,
	Darren Hart <dvhart@...ux.intel.com>,
	Namhyung Kim <namhyung@...il.com>, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 3/4] plist: shrink struct plist_head

On 12/21/2010 05:55 PM, Lai Jiangshan wrote:
> struct plist_head is big, and the field prio_list
> in the struct plist_head is used seldom. So it can be
> removed and we use the first plist_node's prio_list
> when needed.
> 
> The size of struct plist_head is decreased a half after shinked.
> The size of struct rtmutex and struct task_struct are
> also decreased after struct plist_head shrinked.
> 
> Signed-off-by:  Lai Jiangshan <laijs@...fujitsu.com>
> ---
>  include/linux/plist.h |   47 ++++++++++++++++++++++---------------------
>  lib/plist.c           |   54 ++++++++++++++++++++++++++++++++------------------
>  2 files changed, 59 insertions(+), 42 deletions(-)
> 

Hi, Ingo, Thomas, Steven,

Any comments about this patch?

Thanks,
Lai
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