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>, linux-mm@kvack.org, iommu@lists.linux.dev, linux-arm-kernel@lists.infradead.org Subject: [PATCH v5 02/15] dma: Allow dma_get_cache_alignment() to be overridden by the arch code Date: Wed, 24 May 2023 18:18:51 +0100 [thread overview] Message-ID: <20230524171904.3967031-3-catalin.marinas@arm.com> (raw) In-Reply-To: <20230524171904.3967031-1-catalin.marinas@arm.com> On arm64, ARCH_DMA_MINALIGN is larger than most cache line size configurations deployed. Allow an architecture to override dma_get_cache_alignment() in order to return a run-time probed value (e.g. cache_line_size()). Signed-off-by: Catalin Marinas <catalin.marinas@arm.com> Cc: Christoph Hellwig <hch@lst.de> Cc: Robin Murphy <robin.murphy@arm.com> Cc: Will Deacon <will@kernel.org> --- include/linux/dma-mapping.h | 2 ++ 1 file changed, 2 insertions(+) diff --git a/include/linux/dma-mapping.h b/include/linux/dma-mapping.h index 3288a1339271..c41019289223 100644 --- a/include/linux/dma-mapping.h +++ b/include/linux/dma-mapping.h @@ -543,6 +543,7 @@ static inline int dma_set_min_align_mask(struct device *dev, return 0; } +#ifndef dma_get_cache_alignment static inline int dma_get_cache_alignment(void) { #ifdef ARCH_HAS_DMA_MINALIGN @@ -550,6 +551,7 @@ static inline int dma_get_cache_alignment(void) #endif return 1; } +#endif static inline void *dmam_alloc_coherent(struct device *dev, size_t size, dma_addr_t *dma_handle, gfp_t gfp)
WARNING: multiple messages have this Message-ID (diff)
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>, linux-mm@kvack.org, iommu@lists.linux.dev, linux-arm-kernel@lists.infradead.org Subject: [PATCH v5 02/15] dma: Allow dma_get_cache_alignment() to be overridden by the arch code Date: Wed, 24 May 2023 18:18:51 +0100 [thread overview] Message-ID: <20230524171904.3967031-3-catalin.marinas@arm.com> (raw) In-Reply-To: <20230524171904.3967031-1-catalin.marinas@arm.com> On arm64, ARCH_DMA_MINALIGN is larger than most cache line size configurations deployed. Allow an architecture to override dma_get_cache_alignment() in order to return a run-time probed value (e.g. cache_line_size()). Signed-off-by: Catalin Marinas <catalin.marinas@arm.com> Cc: Christoph Hellwig <hch@lst.de> Cc: Robin Murphy <robin.murphy@arm.com> Cc: Will Deacon <will@kernel.org> --- include/linux/dma-mapping.h | 2 ++ 1 file changed, 2 insertions(+) diff --git a/include/linux/dma-mapping.h b/include/linux/dma-mapping.h index 3288a1339271..c41019289223 100644 --- a/include/linux/dma-mapping.h +++ b/include/linux/dma-mapping.h @@ -543,6 +543,7 @@ static inline int dma_set_min_align_mask(struct device *dev, return 0; } +#ifndef dma_get_cache_alignment static inline int dma_get_cache_alignment(void) { #ifdef ARCH_HAS_DMA_MINALIGN @@ -550,6 +551,7 @@ static inline int dma_get_cache_alignment(void) #endif return 1; } +#endif static inline void *dmam_alloc_coherent(struct device *dev, size_t size, dma_addr_t *dma_handle, gfp_t gfp) _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
next prev parent reply other threads:[~2023-05-24 17:19 UTC|newest] Thread overview: 62+ messages / expand[flat|nested] mbox.gz Atom feed top 2023-05-24 17:18 [PATCH v5 00/15] mm, dma, arm64: Reduce ARCH_KMALLOC_MINALIGN to 8 Catalin Marinas 2023-05-24 17:18 ` Catalin Marinas 2023-05-24 17:18 ` [PATCH v5 01/15] mm/slab: Decouple ARCH_KMALLOC_MINALIGN from ARCH_DMA_MINALIGN Catalin Marinas 2023-05-24 17:18 ` Catalin Marinas 2023-05-24 17:18 ` Catalin Marinas [this message] 2023-05-24 17:18 ` [PATCH v5 02/15] dma: Allow dma_get_cache_alignment() to be overridden by the arch code Catalin Marinas 2023-05-25 13:59 ` Christoph Hellwig 2023-05-25 13:59 ` Christoph Hellwig 2023-05-24 17:18 ` [PATCH v5 03/15] mm/slab: Simplify create_kmalloc_cache() args and make it static Catalin Marinas 2023-05-24 17:18 ` Catalin Marinas 2023-05-24 17:18 ` [PATCH v5 04/15] mm/slab: Limit kmalloc() minimum alignment to dma_get_cache_alignment() Catalin Marinas 2023-05-24 17:18 ` Catalin Marinas 2023-05-24 17:18 ` [PATCH v5 05/15] drivers/base: Use ARCH_DMA_MINALIGN instead of ARCH_KMALLOC_MINALIGN Catalin Marinas 2023-05-24 17:18 ` Catalin Marinas 2023-05-24 17:18 ` [PATCH v5 06/15] drivers/gpu: " Catalin Marinas 2023-05-24 17:18 ` Catalin Marinas 2023-05-24 17:18 ` [PATCH v5 07/15] drivers/usb: " Catalin Marinas 2023-05-24 17:18 ` Catalin Marinas 2023-05-24 17:18 ` [PATCH v5 08/15] drivers/spi: " Catalin Marinas 2023-05-24 17:18 ` Catalin Marinas 2023-05-24 17:18 ` [PATCH v5 09/15] drivers/md: " Catalin Marinas 2023-05-24 17:18 ` Catalin Marinas 2023-05-25 14:00 ` Christoph Hellwig 2023-05-25 14:00 ` Christoph Hellwig 2023-05-24 17:18 ` [PATCH v5 10/15] arm64: Allow kmalloc() caches aligned to the smaller cache_line_size() Catalin Marinas 2023-05-24 17:18 ` Catalin Marinas 2023-05-24 17:19 ` [PATCH v5 11/15] scatterlist: Add dedicated config for DMA flags Catalin Marinas 2023-05-24 17:19 ` Catalin Marinas 2023-05-24 17:19 ` [PATCH v5 12/15] dma-mapping: Force bouncing if the kmalloc() size is not cache-line-aligned Catalin Marinas 2023-05-24 17:19 ` Catalin Marinas 2023-05-25 15:53 ` Robin Murphy 2023-05-25 15:53 ` Robin Murphy 2023-05-24 17:19 ` [PATCH v5 13/15] iommu/dma: Force bouncing if the size is not cacheline-aligned Catalin Marinas 2023-05-24 17:19 ` Catalin Marinas 2023-05-25 15:57 ` Robin Murphy 2023-05-25 15:57 ` Robin Murphy 2023-05-26 16:36 ` Jisheng Zhang 2023-05-26 16:36 ` Jisheng Zhang 2023-05-26 19:22 ` Catalin Marinas 2023-05-26 19:22 ` Catalin Marinas 2023-05-30 13:01 ` Robin Murphy 2023-05-30 13:01 ` Robin Murphy 2023-05-24 17:19 ` [PATCH v5 14/15] mm: slab: Reduce the kmalloc() minimum alignment if DMA bouncing possible Catalin Marinas 2023-05-24 17:19 ` Catalin Marinas 2023-05-24 17:19 ` [PATCH v5 15/15] arm64: Enable ARCH_WANT_KMALLOC_DMA_BOUNCE for arm64 Catalin Marinas 2023-05-24 17:19 ` Catalin Marinas 2023-05-25 16:12 ` Robin Murphy 2023-05-25 16:12 ` Robin Murphy 2023-05-25 17:08 ` Catalin Marinas 2023-05-25 17:08 ` Catalin Marinas 2023-05-25 12:31 ` [PATCH v5 00/15] mm, dma, arm64: Reduce ARCH_KMALLOC_MINALIGN to 8 Jonathan Cameron 2023-05-25 12:31 ` Jonathan Cameron 2023-05-25 14:31 ` Catalin Marinas 2023-05-25 14:31 ` Catalin Marinas 2023-05-26 16:07 ` Jonathan Cameron 2023-05-26 16:07 ` Jonathan Cameron 2023-05-26 16:29 ` Jonathan Cameron 2023-05-26 16:29 ` Jonathan Cameron 2023-05-30 13:38 ` Catalin Marinas 2023-05-30 13:38 ` Catalin Marinas 2023-05-30 16:31 ` Jonathan Cameron 2023-05-30 16:31 ` Jonathan Cameron
Reply instructions: You may reply publicly to this message via plain-text email using any one of the following methods: * Save the following mbox file, import it into your mail client, and reply-to-all from there: mbox Avoid top-posting and favor interleaved quoting: https://en.wikipedia.org/wiki/Posting_style#Interleaved_style * Reply using the --to, --cc, and --in-reply-to switches of git-send-email(1): git send-email \ --in-reply-to=20230524171904.3967031-3-catalin.marinas@arm.com \ --to=catalin.marinas@arm.com \ --cc=agk@redhat.com \ --cc=akpm@linux-foundation.org \ --cc=ardb@kernel.org \ --cc=arnd@arndb.de \ --cc=broonie@kernel.org \ --cc=daniel@ffwll.ch \ --cc=gregkh@linuxfoundation.org \ --cc=hch@lst.de \ --cc=herbert@gondor.apana.org.au \ --cc=iommu@lists.linux.dev \ --cc=isaacmanjarres@google.com \ --cc=joro@8bytes.org \ --cc=linux-arm-kernel@lists.infradead.org \ --cc=linux-mm@kvack.org \ --cc=maz@kernel.org \ --cc=rafael@kernel.org \ --cc=robin.murphy@arm.com \ --cc=saravanak@google.com \ --cc=snitzer@kernel.org \ --cc=torvalds@linux-foundation.org \ --cc=will@kernel.org \ /path/to/YOUR_REPLY https://kernel.org/pub/software/scm/git/docs/git-send-email.html * If your mail client supports setting the In-Reply-To header via mailto: links, try the mailto: linkBe sure your reply has a Subject: header at the top and a blank line before the message body.
This is an external index of several public inboxes, see mirroring instructions on how to clone and mirror all data and code used by this external index.