From: Sandeep Patil <psandeep.s@gmail.com>
To: Aaro Koskinen <aaro.koskinen@nokia.com>
Cc: Marek Szyprowski <m.szyprowski@samsung.com>,
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, Ohad Ben-Cohen <ohad@wizery.com>,
Daniel Walker <dwalker@codeaurora.org>,
Russell King <linux@arm.linux.org.uk>,
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>,
Dave Hansen <dave@linux.vnet.ibm.com>,
Jesse Barker <jesse.barker@linaro.org>,
Kyungmin Park <kyungmin.park@samsung.com>,
Benjamin Gaignard <benjamin.gaignard@linaro.org>,
Andrew Morton <akpm@linux-foundation.org>,
Rob Clark <rob.clark@linaro.org>,
KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Subject: Re: [PATCHv24 00/16] Contiguous Memory Allocator
Date: Tue, 10 Apr 2012 10:19:56 -0700 [thread overview]
Message-ID: <CA+K6fF5TbhYX_XYXL33h5s8cnSogSna4Cq2-vM4MfX4igSyozg@mail.gmail.com> (raw)
In-Reply-To: <alpine.DEB.2.00.1204101528390.9354@kernel.research.nokia.com>
>>
>> This is (yet another) update of CMA patches.
>
>
> How well CMA is supposed to work if you have mlocked processes? I've
> been testing these patches, and noticed that by creating a small mlocked
> process you start to get plenty of test_pages_isolated() failure warnings,
> and bigger allocations will always fail.
CMIIW, I think mlocked pages are never migrated. The reason is because
__isolate_lru_pages() does not isolate Unevictable pages right now.
Minchan added support to allow this but the patch was dropped.
See the discussion at : https://lkml.org/lkml/2011/8/29/295
Sandeep
next prev parent reply other threads:[~2012-04-10 17:20 UTC|newest]
Thread overview: 28+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-04-03 14:10 [PATCHv24 00/16] Contiguous Memory Allocator Marek Szyprowski
2012-04-03 14:10 ` [PATCHv24 01/16] mm: page_alloc: remove trailing whitespace Marek Szyprowski
2012-04-03 14:10 ` [PATCHv24 02/16] mm: compaction: introduce isolate_migratepages_range() Marek Szyprowski
2012-04-03 14:10 ` [PATCHv24 03/16] mm: compaction: introduce map_pages() Marek Szyprowski
2012-04-03 14:10 ` [PATCHv24 04/16] mm: compaction: introduce isolate_freepages_range() Marek Szyprowski
2012-04-03 14:10 ` [PATCHv24 05/16] mm: compaction: export some of the functions Marek Szyprowski
2012-04-03 14:10 ` [PATCHv24 06/16] mm: page_alloc: introduce alloc_contig_range() Marek Szyprowski
2012-04-03 14:10 ` [PATCHv24 07/16] mm: page_alloc: change fallbacks array handling Marek Szyprowski
2012-04-03 14:10 ` [PATCHv24 08/16] mm: mmzone: MIGRATE_CMA migration type added Marek Szyprowski
2012-04-03 14:10 ` [PATCHv24 09/16] mm: page_isolation: MIGRATE_CMA isolation functions added Marek Szyprowski
2012-04-03 14:10 ` [PATCHv24 10/16] mm: Serialize access to min_free_kbytes Marek Szyprowski
2012-04-03 14:10 ` [PATCHv24 11/16] mm: extract reclaim code from __alloc_pages_direct_reclaim() Marek Szyprowski
2012-04-03 14:10 ` [PATCHv24 12/16] mm: trigger page reclaim in alloc_contig_range() to stabilise watermarks Marek Szyprowski
2012-04-03 14:10 ` [PATCHv24 13/16] drivers: add Contiguous Memory Allocator Marek Szyprowski
2012-04-03 14:10 ` [PATCHv24 14/16] X86: integrate CMA with DMA-mapping subsystem Marek Szyprowski
2012-04-03 14:10 ` [PATCHv24 15/16] ARM: " Marek Szyprowski
2012-04-03 14:10 ` [PATCHv24 16/16] ARM: Samsung: use CMA for 2 memory banks for s5p-mfc device Marek Szyprowski
2012-04-10 13:41 ` [PATCHv24 00/16] Contiguous Memory Allocator Aaro Koskinen
2012-04-10 17:19 ` Sandeep Patil [this message]
2012-04-11 6:48 ` Marek Szyprowski
2012-04-12 12:39 ` cary.zou
2012-04-19 19:40 ` Andrew Morton
2012-04-20 12:22 ` Marek Szyprowski
2012-04-20 18:30 ` Kumar Gala
2012-04-20 18:31 ` Kumar Gala
2012-04-30 3:38 ` [Linaro-mm-sig] " Barry Song
2012-05-10 13:19 ` [PATCH] drivers: cma: don't fail if migration returns -EAGAIN Marek Szyprowski
2012-05-10 15:14 ` Minchan Kim
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