From: Russell King - ARM Linux <linux@arm.linux.org.uk>
To: Marek Szyprowski <m.szyprowski@samsung.com>
Cc: linux-kernel@vger.kernel.org,
linux-arm-kernel@lists.infradead.org,
linux-media@vger.kernel.org, linux-mm@kvack.org,
linaro-mm-sig@lists.linaro.org,
Daniel Walker <dwalker@codeaurora.org>,
Arnd Bergmann <arnd@arndb.de>, Jonathan Corbet <corbet@lwn.net>,
Mel Gorman <mel@csn.ul.ie>,
Chunsang Jeong <chunsang.jeong@linaro.org>,
Michal Nazarewicz <mina86@mina86.com>,
Jesse Barker <jesse.barker@linaro.org>,
Kyungmin Park <kyungmin.park@samsung.com>,
Ankita Garg <ankita@in.ibm.com>,
Andrew Morton <akpm@linux-foundation.org>,
KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Subject: Re: [PATCH 6/8] drivers: add Contiguous Memory Allocator
Date: Tue, 5 Jul 2011 12:33:45 +0100 [thread overview]
Message-ID: <20110705113345.GA8286@n2100.arm.linux.org.uk> (raw)
In-Reply-To: <1309851710-3828-7-git-send-email-m.szyprowski@samsung.com>
On Tue, Jul 05, 2011 at 09:41:48AM +0200, Marek Szyprowski wrote:
> The Contiguous Memory Allocator is a set of helper functions for DMA
> mapping framework that improves allocations of contiguous memory chunks.
>
> CMA grabs memory on system boot, marks it with CMA_MIGRATE_TYPE and
> gives back to the system. Kernel is allowed to allocate movable pages
> within CMA's managed memory so that it can be used for example for page
> cache when DMA mapping do not use it. On dma_alloc_from_contiguous()
> request such pages are migrated out of CMA area to free required
> contiguous block and fulfill the request. This allows to allocate large
> contiguous chunks of memory at any time assuming that there is enough
> free memory available in the system.
>
> This code is heavily based on earlier works by Michal Nazarewicz.
And how are you addressing the technical concerns about aliasing of
cache attributes which I keep bringing up with this and you keep
ignoring and telling me that I'm standing in your way.
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next prev parent reply other threads:[~2011-07-05 11:34 UTC|newest]
Thread overview: 61+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-07-05 7:41 [PATCHv11 0/8] Contiguous Memory Allocator Marek Szyprowski
2011-07-05 7:41 ` [PATCH 1/8] mm: move some functions from memory_hotplug.c to page_isolation.c Marek Szyprowski
2011-07-05 11:27 ` Arnd Bergmann
2011-07-05 7:41 ` [PATCH 2/8] mm: alloc_contig_freed_pages() added Marek Szyprowski
2011-07-05 11:30 ` Arnd Bergmann
2011-07-05 7:41 ` [PATCH 3/8] mm: alloc_contig_range() added Marek Szyprowski
2011-07-05 11:31 ` Arnd Bergmann
2011-07-05 7:41 ` [PATCH 4/8] mm: MIGRATE_CMA migration type added Marek Szyprowski
2011-07-05 11:44 ` Arnd Bergmann
2011-07-05 12:27 ` Russell King - ARM Linux
2011-07-05 7:41 ` [PATCH 5/8] mm: MIGRATE_CMA isolation functions added Marek Szyprowski
2011-07-05 11:45 ` Arnd Bergmann
2011-07-05 7:41 ` [PATCH 6/8] drivers: add Contiguous Memory Allocator Marek Szyprowski
2011-07-05 10:24 ` Marek Szyprowski
2011-07-05 11:02 ` [PATCH 6/8 RESEND] " Marek Szyprowski
2011-07-05 11:50 ` Arnd Bergmann
2011-07-05 11:33 ` Russell King - ARM Linux [this message]
2011-07-05 12:27 ` [PATCH 6/8] " Arnd Bergmann
2011-07-05 12:30 ` Russell King - ARM Linux
2011-07-05 13:58 ` Arnd Bergmann
2011-07-08 17:25 ` Russell King - ARM Linux
2011-07-12 13:39 ` Arnd Bergmann
2011-08-03 17:43 ` James Bottomley
2011-09-26 12:06 ` Marek Szyprowski
2011-09-26 13:00 ` Russell King - ARM Linux
2011-07-06 13:58 ` Marek Szyprowski
2011-07-06 14:09 ` Arnd Bergmann
2011-07-06 14:23 ` Russell King - ARM Linux
2011-07-06 14:37 ` [Linaro-mm-sig] " Nicolas Pitre
2011-07-06 14:59 ` Arnd Bergmann
2011-07-09 14:57 ` Janusz Krzysztofik
2011-07-11 13:47 ` Marek Szyprowski
2011-07-11 19:01 ` Janusz Krzysztofik
2011-07-12 5:34 ` Marek Szyprowski
2011-07-06 14:51 ` Arnd Bergmann
2011-07-06 15:48 ` Russell King - ARM Linux
2011-07-06 16:05 ` Christoph Lameter
2011-07-06 16:09 ` Michal Nazarewicz
2011-07-06 16:19 ` Christoph Lameter
2011-07-06 17:15 ` Russell King - ARM Linux
2011-07-06 19:03 ` Christoph Lameter
2011-07-06 17:02 ` Russell King - ARM Linux
2011-07-06 16:31 ` Arnd Bergmann
2011-07-06 19:10 ` Nicolas Pitre
2011-07-06 20:23 ` [Linaro-mm-sig] " Arnd Bergmann
2011-07-07 5:29 ` Nicolas Pitre
2011-07-06 14:56 ` Marek Szyprowski
2011-07-06 15:37 ` Russell King - ARM Linux
2011-07-06 15:47 ` Marek Szyprowski
2011-07-14 12:29 ` Marek Szyprowski
2011-07-05 7:41 ` [PATCH 7/8] ARM: integrate CMA with dma-mapping subsystem Marek Szyprowski
2011-07-05 11:50 ` Arnd Bergmann
2011-07-05 7:41 ` [PATCH 8/8] ARM: S5PV210: example of CMA private area for FIMC device on Goni board Marek Szyprowski
2011-07-05 11:51 ` Arnd Bergmann
2011-07-05 12:07 ` [PATCHv11 0/8] Contiguous Memory Allocator Arnd Bergmann
2011-07-05 12:28 ` Russell King - ARM Linux
2011-07-06 22:11 ` Andrew Morton
2011-07-07 7:36 ` Arnd Bergmann
2011-07-11 13:24 ` Marek Szyprowski
-- strict thread matches above, loose matches on Subject: below --
2011-07-20 8:57 [PATCHv12 " Marek Szyprowski
2011-07-20 8:57 ` [PATCH 6/8] drivers: add " Marek Szyprowski
2011-08-19 14:27 [PATCHv15 0/8] " Marek Szyprowski
2011-08-19 14:27 ` [PATCH 6/8] drivers: add " Marek Szyprowski
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