From: Catalin Marinas <catalin.marinas@arm.com>
To: Linus Torvalds <torvalds@linux-foundation.org>,
Christoph Hellwig <hch@lst.de>,
Robin Murphy <robin.murphy@arm.com>
Cc: Arnd Bergmann <arnd@arndb.de>,
Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
Will Deacon <will@kernel.org>, Marc Zyngier <maz@kernel.org>,
Andrew Morton <akpm@linux-foundation.org>,
Herbert Xu <herbert@gondor.apana.org.au>,
Ard Biesheuvel <ardb@kernel.org>,
Isaac Manjarres <isaacmanjarres@google.com>,
Saravana Kannan <saravanak@google.com>,
Alasdair Kergon <agk@redhat.com>, Daniel Vetter <daniel@ffwll.ch>,
Joerg Roedel <joro@8bytes.org>, Mark Brown <broonie@kernel.org>,
Mike Snitzer <snitzer@kernel.org>,
"Rafael J. Wysocki" <rafael@kernel.org>,
Jonathan Cameron <jic23@kernel.org>,
linux-mm@kvack.org, iommu@lists.linux.dev,
linux-arm-kernel@lists.infradead.org
Subject: [PATCH v6 00/17] mm, dma, arm64: Reduce ARCH_KMALLOC_MINALIGN to 8
Date: Wed, 31 May 2023 16:48:19 +0100 [thread overview]
Message-ID: <20230531154836.1366225-1-catalin.marinas@arm.com> (raw)
Hi,
Here's version 6 of the series reducing the kmalloc() minimum alignment
on arm64 to 8 (from 128). There are patches already to do the same for
riscv (pretty straight-forward after this series).
The first 11 patches decouple ARCH_KMALLOC_MINALIGN from
ARCH_DMA_MINALIGN and, for arm64, limit the kmalloc() caches to those
aligned to the run-time probed cache_line_size(). On arm64 we gain the
kmalloc-{64,192} caches.
The subsequent patches (11 to 17) further reduce the kmalloc() caches to
kmalloc-{8,16,32,96} if the default swiotlb is present by bouncing small
buffers in the DMA API.
Changes since v5:
- Renaming of the sg_* accessors for consistency.
- IIO_DMA_MINALIGN defined to ARCH_DMA_MINALIGN (missed it in previous
versions).
- Modified Robin's patch 11 to use #ifdef CONFIG_NEED_SG_DMA_FLAGS
instead of CONFIG_PCI_P2PDMA in scatterlist.h.
- Added the new sg_dma_*_swiotlb() under the same #ifdef as above.
The updated patches are also available on this branch:
git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux devel/kmalloc-minalign
Thanks.
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/dma-map-ops.h | 61 ++++++++++++++++++++++++++++++++++
include/linux/dma-mapping.h | 4 ++-
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 | 46 +++++++++++++++++++------
23 files changed, 243 insertions(+), 64 deletions(-)
next reply other threads:[~2023-05-31 15:48 UTC|newest]
Thread overview: 32+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-05-31 15:48 Catalin Marinas [this message]
2023-05-31 15:48 ` [PATCH v6 01/17] mm/slab: Decouple ARCH_KMALLOC_MINALIGN from ARCH_DMA_MINALIGN Catalin Marinas
2023-06-09 12:32 ` Vlastimil Babka
2023-06-09 13:44 ` Catalin Marinas
2023-06-09 13:57 ` Catalin Marinas
2023-06-09 14:13 ` Vlastimil Babka
2023-05-31 15:48 ` [PATCH v6 02/17] dma: Allow dma_get_cache_alignment() to be overridden by the arch code Catalin Marinas
2023-05-31 15:48 ` [PATCH v6 03/17] mm/slab: Simplify create_kmalloc_cache() args and make it static Catalin Marinas
2023-06-09 13:03 ` Vlastimil Babka
2023-05-31 15:48 ` [PATCH v6 04/17] mm/slab: Limit kmalloc() minimum alignment to dma_get_cache_alignment() Catalin Marinas
2023-06-09 14:33 ` Vlastimil Babka
2023-05-31 15:48 ` [PATCH v6 05/17] drivers/base: Use ARCH_DMA_MINALIGN instead of ARCH_KMALLOC_MINALIGN Catalin Marinas
2023-05-31 15:48 ` [PATCH v6 06/17] drivers/gpu: " Catalin Marinas
2023-05-31 15:48 ` [PATCH v6 07/17] drivers/usb: " Catalin Marinas
2023-05-31 15:48 ` [PATCH v6 08/17] drivers/spi: " Catalin Marinas
2023-05-31 15:48 ` [PATCH v6 09/17] dm-crypt: " Catalin Marinas
2023-05-31 15:48 ` [PATCH v6 10/17] iio: core: " Catalin Marinas
2023-05-31 15:48 ` [PATCH v6 11/17] arm64: Allow kmalloc() caches aligned to the smaller cache_line_size() Catalin Marinas
2023-05-31 15:48 ` [PATCH v6 12/17] scatterlist: Add dedicated config for DMA flags Catalin Marinas
2023-05-31 15:48 ` [PATCH v6 13/17] dma-mapping: Name SG DMA flag helpers consistently Catalin Marinas
2023-05-31 15:48 ` [PATCH v6 14/17] dma-mapping: Force bouncing if the kmalloc() size is not cache-line-aligned Catalin Marinas
2023-05-31 15:48 ` [PATCH v6 15/17] iommu/dma: Force bouncing if the size is not cacheline-aligned Catalin Marinas
2023-06-09 11:52 ` Robin Murphy
2023-05-31 15:48 ` [PATCH v6 16/17] mm: slab: Reduce the kmalloc() minimum alignment if DMA bouncing possible Catalin Marinas
2023-06-09 14:39 ` Vlastimil Babka
2023-05-31 15:48 ` [PATCH v6 17/17] arm64: Enable ARCH_WANT_KMALLOC_DMA_BOUNCE for arm64 Catalin Marinas
2023-06-08 5:45 ` [PATCH v6 00/17] mm, dma, arm64: Reduce ARCH_KMALLOC_MINALIGN to 8 Isaac Manjarres
2023-06-08 8:05 ` Ard Biesheuvel
2023-06-08 21:29 ` Isaac Manjarres
2023-06-09 8:11 ` Petr Tesařík
[not found] ` <TYWPR01MB101127656AB0A0D5DB1FF4CB3F354A@TYWPR01MB10112.jpnprd01.prod.outlook.com>
2023-06-12 7:47 ` Christoph Hellwig
2023-06-14 23:55 ` Isaac Manjarres
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