From: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
To: Andi Kleen <andi@firstfloor.org>
Cc: "linux-mm@kvack.org" <linux-mm@kvack.org>,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
"minchan.kim@gmail.com" <minchan.kim@gmail.com>,
fujita.tomonori@lab.ntt.co.jp
Subject: Re: [RFC][PATCH 1/3] contigous big page allocator
Date: Wed, 13 Oct 2010 16:12:06 +0900 [thread overview]
Message-ID: <20101013161206.c29df8ea.kamezawa.hiroyu@jp.fujitsu.com> (raw)
In-Reply-To: <87sk0a1sq0.fsf@basil.nowhere.org>
On Wed, 13 Oct 2010 09:01:43 +0200
Andi Kleen <andi@firstfloor.org> wrote:
> KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com> writes:
> >
> > What this wants to do:
> > allocates a contiguous chunk of pages larger than MAX_ORDER.
> > for device drivers (camera? etc..)
>
> I think to really move forward you need a concrete use case
> actually implemented in tree.
>
yes. I heard there were users at LinuxCon Japan, so restarted.
I heared video-for-linux + ARM wants this.
I found this thread, now.
http://kerneltrap.org/mailarchive/linux-kernel/2010/10/10/4630166
Hmm.
> > My intention is not for allocating HUGEPAGE(> MAX_ORDER).
>
> I still believe using this for 1GB pages would be one of the more
> interesting use cases.
>
I'm successfully allocating 1GB of continous pages at test. But I'm not sure
requirements and users. How quick this allocation should be ?
For example, if prep_new_page() for 1GB page is slow, what kind of chunk-of-page
construction is the best.
THanks,
-Kame
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next prev parent reply other threads:[~2010-10-13 7:17 UTC|newest]
Thread overview: 26+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-10-13 3:15 KAMEZAWA Hiroyuki
2010-10-13 3:17 ` [RFC][PATCH 2/3] find a contiguous range KAMEZAWA Hiroyuki
2010-10-17 3:18 ` Minchan Kim
2010-10-18 0:29 ` KAMEZAWA Hiroyuki
2010-10-13 3:18 ` [RFC][PATCH 3/3] alloc contig pages with migration KAMEZAWA Hiroyuki
2010-10-17 4:05 ` Minchan Kim
2010-10-18 0:35 ` KAMEZAWA Hiroyuki
2010-10-18 5:18 ` Minchan Kim
2010-10-18 5:31 ` KAMEZAWA Hiroyuki
2010-10-18 5:52 ` Minchan Kim
2010-10-18 5:52 ` KAMEZAWA Hiroyuki
2010-10-13 5:05 ` [RFC][PATCH 1/3] contigous big page allocator KOSAKI Motohiro
2010-10-13 7:01 ` Andi Kleen
2010-10-13 7:12 ` KAMEZAWA Hiroyuki [this message]
2010-10-13 8:36 ` Andi Kleen
2010-10-13 8:39 ` KAMEZAWA Hiroyuki
2010-10-14 1:59 ` KOSAKI Motohiro
2010-10-14 7:07 ` FUJITA Tomonori
2010-10-14 7:24 ` Andi Kleen
2010-10-14 8:36 ` FUJITA Tomonori
2010-10-14 12:55 ` Andi Kleen
2010-10-14 15:09 ` FUJITA Tomonori
2010-10-14 12:10 ` Felipe Contreras
2010-10-14 12:09 ` Felipe Contreras
2010-10-14 15:24 ` FUJITA Tomonori
2010-10-14 21:50 ` Felipe Contreras
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