[PATCHv24 00/16] Contiguous Memory Allocator
From: Marek Szyprowski
Date: Tue Apr 03 2012 - 10:10:29 EST
Hi,
This is (yet another) update of CMA patches. I've rebased them onto
recent v3.4-rc1 kernel tree and integrated some minor bugfixes. The
first issue has been pointed by Sandeep Patil - alloc_contig_range
reclaimed two times too many pages, second issue (possible mismatch
between pageblock size and MAX_ORDER pages) has been recently spotted
by Michal Nazarewicz.
These patches are also available on my git repository:
git://git.linaro.org/people/mszyprowski/linux-dma-mapping.git 3.4-rc1-cma-v24
Best regards
Marek Szyprowski
Samsung Poland R&D Center
Links to previous versions of the patchset:
v23: <http://www.spinics.net/lists/linux-media/msg44547.html>
v22: <http://www.spinics.net/lists/linux-media/msg44370.html>
v21: <http://www.spinics.net/lists/linux-media/msg44155.html>
v20: <http://www.spinics.net/lists/linux-mm/msg29145.html>
v19: <http://www.spinics.net/lists/linux-mm/msg29145.html>
v18: <http://www.spinics.net/lists/linux-mm/msg28125.html>
v17: <http://www.spinics.net/lists/arm-kernel/msg148499.html>
v16: <http://www.spinics.net/lists/linux-mm/msg25066.html>
v15: <http://www.spinics.net/lists/linux-mm/msg23365.html>
v14: <http://www.spinics.net/lists/linux-media/msg36536.html>
v13: (internal, intentionally not released)
v12: <http://www.spinics.net/lists/linux-media/msg35674.html>
v11: <http://www.spinics.net/lists/linux-mm/msg21868.html>
v10: <http://www.spinics.net/lists/linux-mm/msg20761.html>
v9: <http://article.gmane.org/gmane.linux.kernel.mm/60787>
v8: <http://article.gmane.org/gmane.linux.kernel.mm/56855>
v7: <http://article.gmane.org/gmane.linux.kernel.mm/55626>
v6: <http://article.gmane.org/gmane.linux.kernel.mm/55626>
v5: (intentionally left out as CMA v5 was identical to CMA v4)
v4: <http://article.gmane.org/gmane.linux.kernel.mm/52010>
v3: <http://article.gmane.org/gmane.linux.kernel.mm/51573>
v2: <http://article.gmane.org/gmane.linux.kernel.mm/50986>
v1: <http://article.gmane.org/gmane.linux.kernel.mm/50669>
Changelog:
v24:
1. fixed handling of diffrent sizes of pageblock and MAX_ORDER size
pages
2. fixed number of the reclaimed pages before performing the allocation
(thanks to Sandeep Patil for pointing this issue)
3. rebased onto Linux v3.4-rc1
v23:
1. fixed bug spotted by Aaro Koskinen (incorrect check inside VM_BUG_ON)
2. rebased onto next-20120222 tree from
git://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git
v22:
1. Fixed compilation break caused by missing fixup patch in v21
2. Fixed typos in the comments
3. Removed superfluous #include entries
v21:
1. Fixed incorrect check which broke memory compaction code
2. Fixed hacky and racy min_free_kbytes handling
3. Added serialization patch to watermark calculation
4. Fixed typos here and there in the comments
v20 and earlier - see previous patchsets.
Patches in this patchset:
Marek Szyprowski (6):
mm: extract reclaim code from __alloc_pages_direct_reclaim()
mm: trigger page reclaim in alloc_contig_range() to stabilise
watermarks
drivers: add Contiguous Memory Allocator
X86: integrate CMA with DMA-mapping subsystem
ARM: integrate CMA with DMA-mapping subsystem
ARM: Samsung: use CMA for 2 memory banks for s5p-mfc device
Mel Gorman (1):
mm: Serialize access to min_free_kbytes
Michal Nazarewicz (9):
mm: page_alloc: remove trailing whitespace
mm: compaction: introduce isolate_migratepages_range()
mm: compaction: introduce map_pages()
mm: compaction: introduce isolate_freepages_range()
mm: compaction: export some of the functions
mm: page_alloc: introduce alloc_contig_range()
mm: page_alloc: change fallbacks array handling
mm: mmzone: MIGRATE_CMA migration type added
mm: page_isolation: MIGRATE_CMA isolation functions added
Documentation/kernel-parameters.txt | 9 +
arch/Kconfig | 3 +
arch/arm/Kconfig | 2 +
arch/arm/include/asm/dma-contiguous.h | 15 ++
arch/arm/include/asm/mach/map.h | 1 +
arch/arm/kernel/setup.c | 9 +-
arch/arm/mm/dma-mapping.c | 370 ++++++++++++++++++++++++------
arch/arm/mm/init.c | 23 ++-
arch/arm/mm/mm.h | 3 +
arch/arm/mm/mmu.c | 31 ++-
arch/arm/plat-s5p/dev-mfc.c | 51 +----
arch/x86/Kconfig | 1 +
arch/x86/include/asm/dma-contiguous.h | 13 +
arch/x86/include/asm/dma-mapping.h | 4 +
arch/x86/kernel/pci-dma.c | 18 ++-
arch/x86/kernel/pci-nommu.c | 8 +-
arch/x86/kernel/setup.c | 2 +
drivers/base/Kconfig | 89 +++++++
drivers/base/Makefile | 1 +
drivers/base/dma-contiguous.c | 401 +++++++++++++++++++++++++++++++
include/asm-generic/dma-contiguous.h | 28 +++
include/linux/device.h | 4 +
include/linux/dma-contiguous.h | 110 +++++++++
include/linux/gfp.h | 12 +
include/linux/mmzone.h | 47 +++-
include/linux/page-isolation.h | 18 +-
mm/Kconfig | 2 +-
mm/Makefile | 3 +-
mm/compaction.c | 418 +++++++++++++++++++++------------
mm/internal.h | 33 +++
mm/memory-failure.c | 2 +-
mm/memory_hotplug.c | 6 +-
mm/page_alloc.c | 409 ++++++++++++++++++++++++++++----
mm/page_isolation.c | 15 +-
mm/vmstat.c | 3 +
35 files changed, 1791 insertions(+), 373 deletions(-)
create mode 100644 arch/arm/include/asm/dma-contiguous.h
create mode 100644 arch/x86/include/asm/dma-contiguous.h
create mode 100644 drivers/base/dma-contiguous.c
create mode 100644 include/asm-generic/dma-contiguous.h
create mode 100644 include/linux/dma-contiguous.h
--
1.7.1.569.g6f426
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