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* [PATCH v7 00/17] mm, dma, arm64: Reduce ARCH_KMALLOC_MINALIGN to 8
@ 2023-06-12 15:31 Catalin Marinas
  2023-06-12 15:31 ` [PATCH v7 01/17] mm/slab: Decouple ARCH_KMALLOC_MINALIGN from ARCH_DMA_MINALIGN Catalin Marinas
                   ` (18 more replies)
  0 siblings, 19 replies; 34+ messages in thread
From: Catalin Marinas @ 2023-06-12 15:31 UTC (permalink / raw)
  To: Andrew Morton, Linus Torvalds
  Cc: Christoph Hellwig, Robin Murphy, Arnd Bergmann,
	Greg Kroah-Hartman, Will Deacon, Marc Zyngier, Herbert Xu,
	Ard Biesheuvel, Isaac Manjarres, Saravana Kannan,
	Alasdair Kergon, Daniel Vetter, Joerg Roedel, Mark Brown,
	Mike Snitzer, Rafael J. Wysocki, Jonathan Cameron,
	Vlastimil Babka, linux-mm, iommu, linux-arm-kernel

Hi,

That's v7 of the series reducing the kmalloc() minimum alignment on
arm64 to 8 (from 128). There's no new/different functionality, mostly
cosmetic changes and acks/tested-bys.

Andrew, if there are no further comments or objections to this version,
are you ok to take the series through the mm tree? The arm64 changes are
fairly small. Alternatively, I can push it into linux-next now to give
it some wider exposure and decide whether to upstream it when the
merging window opens. Thanks.

The updated patches are also available on this branch:

git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux devel/kmalloc-minalign

Changes since v6
(https://lore.kernel.org/r/20230531154836.1366225-1-catalin.marinas@arm.com):

- Moved ARCH_DMA_MINALIGN to include/linux/cache.h from slab.h (it
  matches the asm/cache.h where most architectures defining this macro
  place it).

- Single body for __kmalloc_minalign() with an #ifdef.

- Renamed the sg_dma_use_swiotlb() to sg_dma_is_swiotlb() (Robin's
  suggestion).

- Added acks/tested-by.

Catalin Marinas (15):
  mm/slab: Decouple ARCH_KMALLOC_MINALIGN from ARCH_DMA_MINALIGN
  dma: Allow dma_get_cache_alignment() to be overridden by the arch code
  mm/slab: Simplify create_kmalloc_cache() args and make it static
  mm/slab: Limit kmalloc() minimum alignment to
    dma_get_cache_alignment()
  drivers/base: Use ARCH_DMA_MINALIGN instead of ARCH_KMALLOC_MINALIGN
  drivers/gpu: Use ARCH_DMA_MINALIGN instead of ARCH_KMALLOC_MINALIGN
  drivers/usb: Use ARCH_DMA_MINALIGN instead of ARCH_KMALLOC_MINALIGN
  drivers/spi: Use ARCH_DMA_MINALIGN instead of ARCH_KMALLOC_MINALIGN
  dm-crypt: Use ARCH_DMA_MINALIGN instead of ARCH_KMALLOC_MINALIGN
  iio: core: Use ARCH_DMA_MINALIGN instead of ARCH_KMALLOC_MINALIGN
  arm64: Allow kmalloc() caches aligned to the smaller cache_line_size()
  dma-mapping: Force bouncing if the kmalloc() size is not
    cache-line-aligned
  iommu/dma: Force bouncing if the size is not cacheline-aligned
  mm: slab: Reduce the kmalloc() minimum alignment if DMA bouncing
    possible
  arm64: Enable ARCH_WANT_KMALLOC_DMA_BOUNCE for arm64

Robin Murphy (2):
  scatterlist: Add dedicated config for DMA flags
  dma-mapping: Name SG DMA flag helpers consistently

 arch/arm64/Kconfig             |  1 +
 arch/arm64/include/asm/cache.h |  3 ++
 arch/arm64/mm/init.c           |  7 +++-
 drivers/base/devres.c          |  6 ++--
 drivers/gpu/drm/drm_managed.c  |  6 ++--
 drivers/iommu/Kconfig          |  1 +
 drivers/iommu/dma-iommu.c      | 58 ++++++++++++++++++++++++--------
 drivers/iommu/iommu.c          |  2 +-
 drivers/md/dm-crypt.c          |  2 +-
 drivers/pci/Kconfig            |  1 +
 drivers/spi/spidev.c           |  2 +-
 drivers/usb/core/buffer.c      |  8 ++---
 include/linux/cache.h          |  6 ++++
 include/linux/dma-map-ops.h    | 61 ++++++++++++++++++++++++++++++++++
 include/linux/dma-mapping.h    |  5 ++-
 include/linux/iio/iio.h        |  2 +-
 include/linux/scatterlist.h    | 60 ++++++++++++++++++++++++++-------
 include/linux/slab.h           | 14 +++++---
 kernel/dma/Kconfig             |  7 ++++
 kernel/dma/direct.c            |  2 +-
 kernel/dma/direct.h            |  3 +-
 mm/slab.c                      |  6 +---
 mm/slab.h                      |  5 ++-
 mm/slab_common.c               | 41 +++++++++++++++++------
 24 files changed, 244 insertions(+), 65 deletions(-)



^ permalink raw reply	[flat|nested] 34+ messages in thread

end of thread, other threads:[~2025-05-02 12:02 UTC | newest]

Thread overview: 34+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2023-06-12 15:31 [PATCH v7 00/17] mm, dma, arm64: Reduce ARCH_KMALLOC_MINALIGN to 8 Catalin Marinas
2023-06-12 15:31 ` [PATCH v7 01/17] mm/slab: Decouple ARCH_KMALLOC_MINALIGN from ARCH_DMA_MINALIGN Catalin Marinas
2023-06-13  9:46   ` Vlastimil Babka
2023-06-13 11:13     ` Catalin Marinas
2023-06-12 15:31 ` [PATCH v7 02/17] dma: Allow dma_get_cache_alignment() to be overridden by the arch code Catalin Marinas
2023-06-12 15:31 ` [PATCH v7 03/17] mm/slab: Simplify create_kmalloc_cache() args and make it static Catalin Marinas
2023-06-12 15:31 ` [PATCH v7 04/17] mm/slab: Limit kmalloc() minimum alignment to dma_get_cache_alignment() Catalin Marinas
2023-06-12 15:31 ` [PATCH v7 05/17] drivers/base: Use ARCH_DMA_MINALIGN instead of ARCH_KMALLOC_MINALIGN Catalin Marinas
2023-06-12 15:31 ` [PATCH v7 06/17] drivers/gpu: " Catalin Marinas
2023-06-12 15:31 ` [PATCH v7 07/17] drivers/usb: " Catalin Marinas
2023-06-12 15:31 ` [PATCH v7 08/17] drivers/spi: " Catalin Marinas
2023-06-12 15:31 ` [PATCH v7 09/17] dm-crypt: " Catalin Marinas
2023-06-12 15:31 ` [PATCH v7 10/17] iio: core: " Catalin Marinas
2023-06-12 15:31 ` [PATCH v7 11/17] arm64: Allow kmalloc() caches aligned to the smaller cache_line_size() Catalin Marinas
2023-06-12 15:31 ` [PATCH v7 12/17] scatterlist: Add dedicated config for DMA flags Catalin Marinas
2023-06-12 15:31 ` [PATCH v7 13/17] dma-mapping: Name SG DMA flag helpers consistently Catalin Marinas
2023-06-12 15:31 ` [PATCH v7 14/17] dma-mapping: Force bouncing if the kmalloc() size is not cache-line-aligned Catalin Marinas
2023-06-12 15:31 ` [PATCH v7 15/17] iommu/dma: Force bouncing if the size is not cacheline-aligned Catalin Marinas
2023-06-12 15:32 ` [PATCH v7 16/17] mm: slab: Reduce the kmalloc() minimum alignment if DMA bouncing possible Catalin Marinas
2023-06-12 15:32 ` [PATCH v7 17/17] arm64: Enable ARCH_WANT_KMALLOC_DMA_BOUNCE for arm64 Catalin Marinas
2023-07-05 13:40 ` [PATCH v7 00/17] mm, dma, arm64: Reduce ARCH_KMALLOC_MINALIGN to 8 Amit Pundir
2023-07-07  0:41   ` Isaac Manjarres
2023-07-08 13:02     ` Amit Pundir
2023-07-11 19:44       ` Isaac Manjarres
2023-07-12  4:57         ` Amit Pundir
2023-07-09  3:27   ` Catalin Marinas
2025-03-28 16:41 ` John Ernberg
2025-03-28 19:38   ` Frank Li
2025-03-31  8:02     ` John Ernberg
2025-03-31 16:21       ` Frank Li
2025-04-01 12:56         ` John Ernberg
2025-04-01 16:43   ` Catalin Marinas
2025-04-02 10:35     ` John Ernberg
2025-05-02 12:02     ` John Ernberg

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