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From: kamezawa.hiroyu@jp.fujitsu.com
To: Dave Hansen <dave@linux.vnet.ibm.com>
Cc: kamezawa.hiroyu@jp.fujitsu.com, linux-mm@kvack.org,
	balbir@linux.vnet.ibm.com, nishimura@mxp.nes.nec.co.jp,
	xemul@openvz.org, LKML <linux-kernel@vger.kernel.org>
Subject: Re: Re: Re: Re: [PATCH 9/13] memcg: lookup page cgroup (and remove pointer from struct page)
Date: Tue, 23 Sep 2008 02:34:46 +0900 (JST)	[thread overview]
Message-ID: <4937651.1222104886847.kamezawa.hiroyu@jp.fujitsu.com> (raw)
In-Reply-To: <1222099850.8533.60.camel@nimitz>

>On Tue, 2008-09-23 at 00:57 +0900, kamezawa.hiroyu@jp.fujitsu.com wrote:
>> I'll add FLATMEM/SPARSEMEM support later. Could you wait for a while ?
>> Because we have lookup_page_cgroup() after this, we can do anything.
>
>OK, I'll stop harassing for the moment, and take a look at the cache. :)
>
Why I don't say "optimize this! now! more!" is where this is called is
limited now. only at charge/uncharge. This is not memmap.

 charge     ...the first page fault to the page
                  add to radix-tree
 uncharge   ...the last unmap aginst the page
                  remove from radix-tree.

I can make this faster by using charactoristics of FLATMEM and others.
(with more #ifdefs and codes.)
But would like to start from generic one because adding interface is
the first thing I have to do here.

BTW, to be honest, I don't like 2-level-table-lookup like
SPARSEMEM_EXTREME, here. A style like SPARSEMEM_VMEMMAP...using 
linear virtual address map will be goal of mine.

Thanks,
-Kame

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  parent reply	other threads:[~2008-09-22 17:34 UTC|newest]

Thread overview: 37+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2008-09-22 10:51 [PATCH 0/13] memory cgroup updates v4 KAMEZAWA Hiroyuki
2008-09-22 10:55 ` [PATCH 1/13] memcg: avoid accounting special mapping KAMEZAWA Hiroyuki
2008-09-22 10:57 ` [PATCH 2/13] memcg: account fault-in swap under lock KAMEZAWA Hiroyuki
2008-09-22 10:58 ` [PATCH 3/13] memcg: nolimit root cgroup KAMEZAWA Hiroyuki
2008-09-22 11:00 ` [PATCH 4/13] memcg: force_empty moving account KAMEZAWA Hiroyuki
2008-09-22 14:23   ` Peter Zijlstra
2008-09-22 14:50   ` kamezawa.hiroyu
2008-09-22 14:56     ` Peter Zijlstra
2008-09-22 15:06     ` kamezawa.hiroyu
2008-09-22 15:32       ` Peter Zijlstra
2008-09-22 15:43       ` kamezawa.hiroyu
2008-09-22 11:02 ` [PATCH 5/13] memcg: cleanup to make mapping null before unchage KAMEZAWA Hiroyuki
2008-09-22 11:03 ` [PATCH 6/13] memcg: optimze per cpu accounting for memcg KAMEZAWA Hiroyuki
2008-09-22 11:05 ` [PATCH 3.5/13] memcg: make page_cgroup flags to be atomic KAMEZAWA Hiroyuki
2008-09-22 11:09 ` [PATCH 3.6/13] memcg: add function to move account KAMEZAWA Hiroyuki
2008-09-24  6:50   ` Daisuke Nishimura
2008-09-24  7:11     ` KAMEZAWA Hiroyuki
2008-09-22 11:12 ` [PATCH 9/13] memcg: lookup page cgroup (and remove pointer from struct page) KAMEZAWA Hiroyuki
2008-09-22 14:52   ` Dave Hansen
2008-09-22 15:14   ` kamezawa.hiroyu
2008-09-22 15:47     ` Dave Hansen
2008-09-22 15:57     ` kamezawa.hiroyu
2008-09-22 16:10       ` Dave Hansen
2008-09-22 17:34       ` kamezawa.hiroyu [this message]
2008-09-22 15:47   ` Peter Zijlstra
2008-09-22 16:04   ` kamezawa.hiroyu
2008-09-22 16:06     ` Peter Zijlstra
2008-09-23 23:48   ` KAMEZAWA Hiroyuki
2008-09-24  2:09     ` Balbir Singh
2008-09-24  3:09       ` KAMEZAWA Hiroyuki
2008-09-24  8:31         ` Balbir Singh
2008-09-24  8:46           ` KAMEZAWA Hiroyuki
2008-09-22 11:13 ` [PATCH 10/13] memcg: page_cgroup look aside table KAMEZAWA Hiroyuki
2008-09-22 11:17 ` [PATCH 11/13] memcg: lazy LRU free (NEW) KAMEZAWA Hiroyuki
2008-09-22 11:22 ` [PATCH 12/13] memcg: lazy LRU add KAMEZAWA Hiroyuki
2008-09-22 11:24 ` [PATCH 13/13] memcg: swap accounting fix KAMEZAWA Hiroyuki
2008-09-22 11:28 ` [PATCH 0/13] memory cgroup updates v4 KAMEZAWA Hiroyuki

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