From: "Américo Wang" <xiyou.wangcong@gmail.com>
To: "Michał Nazarewicz" <m.nazarewicz@samsung.com>
Cc: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>,
FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>,
Daniel Walker <dwalker@codeaurora.org>,
Russell King <linux@arm.linux.org.uk>,
Jonathan Corbet <corbet@lwn.net>,
Peter Zijlstra <peterz@infradead.org>,
Pawel Osciak <p.osciak@samsung.com>,
Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>,
linux-kernel@vger.kernel.org, Mel Gorman <mel@csn.ul.ie>,
Hans Verkuil <hverkuil@xs4all.nl>,
linux-mm@kvack.org, Kyungmin Park <kyungmin.park@samsung.com>,
Zach Pfeffer <zpfeffer@codeaurora.org>,
Mark Brown <broonie@opensource.wolfsonmicro.com>,
Andrew Morton <akpm@linux-foundation.org>,
Marek Szyprowski <m.szyprowski@samsung.com>,
linux-arm-kernel@lists.infradead.org,
linux-media@vger.kernel.org
Subject: Re: [PATCH/RFCv4 0/6] The Contiguous Memory Allocator framework
Date: Thu, 26 Aug 2010 13:54:17 +0800 [thread overview]
Message-ID: <20100826055417.GA5157@cr0.nay.redhat.com> (raw)
In-Reply-To: <op.vh01hi2m7p4s8u@localhost>
On Thu, Aug 26, 2010 at 06:01:56AM +0200, MichaA? Nazarewicz wrote:
>KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com> wrote:
>>128MB...too big ? But it's depend on config.
>
>On embedded systems it may be like half of the RAM. Or a quarter. So bigger
>granularity could be desired on some platforms.
>
>>IBM's ppc guys used 16MB section, and recently, a new interface to shrink
>>the number of /sys files are added, maybe usable.
>>
>>Something good with this approach will be you can create "cma" memory
>>before installing driver.
>
>That's how CMA works at the moment. But if I understand you correctly, what
>you are proposing would allow to reserve memory *at* *runtime* long after system
>has booted. This would be a nice feature as well though.
>
Yeah, if we can do this, that will avoid rebooting for kdump to reserve
memory.
Thanks.
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next prev parent reply other threads:[~2010-08-26 5:50 UTC|newest]
Thread overview: 60+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-08-20 9:50 [PATCH/RFCv4 0/6] The Contiguous Memory Allocator framework Michal Nazarewicz
2010-08-20 9:50 ` [PATCH/RFCv4 1/6] lib: rbtree: rb_root_init() function added Michal Nazarewicz
2010-08-20 9:50 ` [PATCH/RFCv4 2/6] mm: cma: Contiguous Memory Allocator added Michal Nazarewicz
2010-08-20 9:50 ` [PATCH/RFCv4 3/6] mm: cma: Added SysFS support Michal Nazarewicz
2010-08-20 9:50 ` [PATCH/RFCv4 4/6] mm: cma: Added command line parameters support Michal Nazarewicz
2010-08-20 9:50 ` [PATCH/RFCv4 5/6] mm: cma: Test device and application added Michal Nazarewicz
2010-08-20 9:50 ` [PATCH/RFCv4 6/6] arm: Added CMA to Aquila and Goni Michal Nazarewicz
2010-08-25 20:37 ` [PATCH/RFCv4 3/6] mm: cma: Added SysFS support Konrad Rzeszutek Wilk
2010-08-26 1:20 ` Michał Nazarewicz
2010-08-25 20:32 ` [PATCH/RFCv4 2/6] mm: cma: Contiguous Memory Allocator added Konrad Rzeszutek Wilk
2010-08-26 1:22 ` Michał Nazarewicz
2010-08-26 6:25 ` [PATCH/RFCv4.1 " Michal Nazarewicz
2010-08-26 13:47 ` [PATCH/RFCv4 " Mel Gorman
2010-08-27 2:09 ` Michał Nazarewicz
2010-08-28 12:37 ` Hans Verkuil
2010-08-29 1:48 ` Michał Nazarewicz
2010-08-20 13:15 ` [PATCH/RFCv4 0/6] The Contiguous Memory Allocator framework Peter Zijlstra
2010-08-25 22:58 ` Andrew Morton
2010-08-25 23:26 ` Daniel Walker
2010-08-26 1:38 ` Michał Nazarewicz
2010-08-25 23:31 ` Jonathan Corbet
2010-08-26 1:38 ` Pawel Osciak
2010-08-26 1:49 ` Michał Nazarewicz
2010-08-26 2:49 ` Minchan Kim
2010-08-26 3:04 ` Minchan Kim
2010-08-26 8:20 ` Peter Zijlstra
2010-08-26 9:29 ` Minchan Kim
2010-08-26 10:06 ` Peter Zijlstra
2010-08-26 10:21 ` Minchan Kim
2010-08-26 11:05 ` Peter Zijlstra
2010-08-26 0:58 ` KAMEZAWA Hiroyuki
2010-08-26 2:12 ` Michał Nazarewicz
2010-08-26 2:50 ` KAMEZAWA Hiroyuki
2010-08-26 3:44 ` KAMEZAWA Hiroyuki
2010-08-26 4:01 ` Michał Nazarewicz
2010-08-26 4:39 ` KAMEZAWA Hiroyuki
2010-08-26 5:54 ` Américo Wang [this message]
2010-08-26 4:06 ` Minchan Kim
2010-08-26 4:14 ` Minchan Kim
2010-08-26 4:30 ` KAMEZAWA Hiroyuki
2010-08-26 9:36 ` Minchan Kim
2010-08-27 8:16 ` KAMEZAWA Hiroyuki
2010-08-27 8:37 ` Peter Zijlstra
2010-09-02 8:54 ` KAMEZAWA Hiroyuki
2010-09-03 10:29 ` KAMEZAWA Hiroyuki
2010-09-05 15:57 ` Minchan Kim
2010-09-06 0:08 ` KAMEZAWA Hiroyuki
2010-08-26 1:22 ` Pawel Osciak
2010-08-26 2:40 ` Michał Nazarewicz
2010-08-26 8:18 ` Peter Zijlstra
2010-08-26 10:18 ` Mel Gorman
2010-08-28 13:08 ` Hans Verkuil
2010-08-28 13:34 ` Peter Zijlstra
2010-08-28 13:58 ` Hans Verkuil
2010-08-28 14:16 ` Peter Zijlstra
2010-08-30 8:27 ` Clemens Ladisch
2010-08-26 1:28 ` Michał Nazarewicz
2010-08-26 8:17 ` Peter Zijlstra
2010-08-27 2:41 ` Michał Nazarewicz
2010-08-26 10:12 ` Mel Gorman
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