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authorCatalin Marinas <catalin.marinas@arm.com>2023-06-12 16:31:55 +0100
committerAndrew Morton <akpm@linux-foundation.org>2023-06-19 16:19:22 -0700
commit9382bc44b5f58ccee375f08f518e53c0280051dc (patch)
tree26f57de2f8612c1f36738b053ec072e5c8d601cc /arch/sparc/kernel/vio.c
parent88b216d339691888ef98644a5eae62c3d9c8ddf0 (diff)
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arm64: allow kmalloc() caches aligned to the smaller cache_line_size()
On arm64, ARCH_DMA_MINALIGN is 128, larger than the cache line size on most of the current platforms (typically 64). Define ARCH_KMALLOC_MINALIGN to 8 (the default for architectures without their own ARCH_DMA_MINALIGN) and override dma_get_cache_alignment() to return cache_line_size(), probed at run-time. The kmalloc() caches will be limited to the cache line size. This will allow the additional kmalloc-{64,192} caches on most arm64 platforms. Link: https://lkml.kernel.org/r/20230612153201.554742-12-catalin.marinas@arm.com Signed-off-by: Catalin Marinas <catalin.marinas@arm.com> Tested-by: Isaac J. Manjarres <isaacmanjarres@google.com> Cc: Will Deacon <will@kernel.org> Cc: Alasdair Kergon <agk@redhat.com> Cc: Ard Biesheuvel <ardb@kernel.org> Cc: Arnd Bergmann <arnd@arndb.de> Cc: Christoph Hellwig <hch@lst.de> Cc: Daniel Vetter <daniel@ffwll.ch> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: Herbert Xu <herbert@gondor.apana.org.au> Cc: Jerry Snitselaar <jsnitsel@redhat.com> Cc: Joerg Roedel <joro@8bytes.org> Cc: Jonathan Cameron <jic23@kernel.org> Cc: Jonathan Cameron <Jonathan.Cameron@huawei.com> Cc: Lars-Peter Clausen <lars@metafoo.de> Cc: Logan Gunthorpe <logang@deltatee.com> Cc: Marc Zyngier <maz@kernel.org> Cc: Mark Brown <broonie@kernel.org> Cc: Mike Snitzer <snitzer@kernel.org> Cc: "Rafael J. Wysocki" <rafael@kernel.org> Cc: Robin Murphy <robin.murphy@arm.com> Cc: Saravana Kannan <saravanak@google.com> Cc: Vlastimil Babka <vbabka@suse.cz> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Diffstat (limited to 'arch/sparc/kernel/vio.c')
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