linux-kernel - Re: [PATCH 4/8] Use vmalloc for large cgroups pidlist allocations

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Message-ID: <4A8CBAE1.9010408@cn.fujitsu.com>
Date:	Thu, 20 Aug 2009 10:54:25 +0800
From:	Li Zefan <lizf@...fujitsu.com>
To:	Paul Menage <menage@...gle.com>
CC:	akpm@...ux-foundation.org, bblum@...rew.cmu.edu,
	linux-kernel@...r.kernel.org, containers@...ts.linux-foundation.org
Subject: Re: [PATCH 4/8] Use vmalloc for large cgroups pidlist allocations

Paul Menage wrote:
> On Wed, Aug 19, 2009 at 7:37 PM, Li Zefan<lizf@...fujitsu.com> wrote:
>> I come to realize the "procs" file will make it much harder to convert
>> vmalloc/kmalloc with a different solution..
>>
> 
> Why do you think that?
> 

To avoid showing duplicate threadgroup pids, when dealing with a
thread, you have to check backwards to see if it's group pid
has been printed. Maybe it doesn't add much extra cost with your
proposal, we'll see.

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