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

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Date:	Thu, 23 Dec 2010 10:09:35 -0500
From:	Steven Rostedt <rostedt@...dmis.org>
To:	Lai Jiangshan <laijs@...fujitsu.com>
Cc:	Ingo Molnar <mingo@...e.hu>, Thomas Gleixner <tglx@...utronix.de>,
	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 Thu, 2010-12-23 at 10:13 +0800, Lai Jiangshan wrote:
> 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?

Sorry, I've been trying to get a bunch done before the holiday break.
I'll try to see if I can look at this today. I'll be pushing out your
port of the rtmutex code today. Heh, I need to update it to your latest
changes :-)

Anyway, after today, I'm off till Jan 3rd, so anything not done today
will need to wait till then.

-- Steve


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