From patchwork Mon Jun 12 15:31:44 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Catalin Marinas X-Patchwork-Id: 13276885 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 0C0A6C88CB4 for ; Mon, 12 Jun 2023 15:32:38 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:Message-Id:Date:Subject:Cc :To:From:Reply-To:Content-ID:Content-Description:Resent-Date:Resent-From: Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:In-Reply-To:References: List-Owner; bh=wBTLKD0mfQDY9PNgd6qq4VfJH6RmPg3bgJioRu9y7AM=; b=aoWocEk8oFpR9O 3FuibuwRyIgA4nYPG+KM9nN/yuFqUsZX2fpMN8Y3koeUVGV4vegqVt04DAjrBDsPaAfHBvKJVFGte MSV83weJp91s0hkXZubGHst9xgvUdAPDY9m3iaazpmjrMIo8j1SUW+aBxIfasM9g91xlqZKfCfQTs gXJcGpXVhM2wd1MfI1gc1XbSU6Slbta6RrtMPe6ZlI9Hwgt5GNCBjvLRAl+appfR5na9SzQA4F3v1 dX08aLsu/hCGXaGf9U+KnEM/X0XSb/I/bPKSgiJEk2qM3zxyT4ZynyIRgk4PYCTQDQ6NvNTkd4lCZ h5RQP4+3U1BWdzwJB0HA==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.96 #2 (Red Hat Linux)) id 1q8jWe-004ULn-1j; Mon, 12 Jun 2023 15:32:12 +0000 Received: from dfw.source.kernel.org ([2604:1380:4641:c500::1]) by bombadil.infradead.org with esmtps (Exim 4.96 #2 (Red Hat Linux)) id 1q8jWb-004UKl-2k for linux-arm-kernel@lists.infradead.org; Mon, 12 Jun 2023 15:32:11 +0000 Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by dfw.source.kernel.org (Postfix) with ESMTPS id 8F8DB62AE3; Mon, 12 Jun 2023 15:32:08 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id A0019C433D2; Mon, 12 Jun 2023 15:32:03 +0000 (UTC) From: Catalin Marinas 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@kvack.org, iommu@lists.linux.dev, linux-arm-kernel@lists.infradead.org Subject: [PATCH v7 00/17] mm, dma, arm64: Reduce ARCH_KMALLOC_MINALIGN to 8 Date: Mon, 12 Jun 2023 16:31:44 +0100 Message-Id: <20230612153201.554742-1-catalin.marinas@arm.com> X-Mailer: git-send-email 2.39.2 MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20230612_083209_989180_DD4968DC X-CRM114-Status: GOOD ( 14.28 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org 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(-)