From mboxrd@z Thu Jan 1 00:00:00 1970 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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id BC879C88CB2 for ; Mon, 12 Jun 2023 20:04:38 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S233213AbjFLUEg (ORCPT ); Mon, 12 Jun 2023 16:04:36 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:40824 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S234891AbjFLUEV (ORCPT ); Mon, 12 Jun 2023 16:04:21 -0400 Received: from dfw.source.kernel.org (dfw.source.kernel.org [IPv6:2604:1380:4641:c500::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 9FB3D170C for ; Mon, 12 Jun 2023 13:04:18 -0700 (PDT) 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 1AE9862DFF for ; Mon, 12 Jun 2023 20:04:18 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 6E129C433D2; Mon, 12 Jun 2023 20:04:17 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linux-foundation.org; s=korg; t=1686600257; bh=jXuGzkC6m0qHjQRG5eHgGZOJt/am8V7F1wQTnQLY2sg=; h=Date:To:From:Subject:From; b=ysOtM0utZQ71pZHEMiJTocbSqRj/NSFdxeM+D99i+MdpNR7ZSddcqigt4Ca+CY52r VwtATGP50V7IVm7gSMT/3pTtkqCepQdt5Yl04ePiOQpst38nH/w3vO6UhjW/pbFKAt bx9XoXVdClyDCBl7oDNH5LL1ktGyniECJyw/4BAo= Date: Mon, 12 Jun 2023 13:04:16 -0700 To: mm-commits@vger.kernel.org, will@kernel.org, vbabka@suse.cz, snitzer@kernel.org, saravanak@google.com, robin.murphy@arm.com, rafael@kernel.org, maz@kernel.org, logang@deltatee.com, lars@metafoo.de, jsnitsel@redhat.com, joro@8bytes.org, Jonathan.Cameron@huawei.com, jic23@kernel.org, isaacmanjarres@google.com, herbert@gondor.apana.org.au, hch@lst.de, gregkh@linuxfoundation.org, daniel@ffwll.ch, broonie@kernel.org, arnd@arndb.de, ardb@kernel.org, agk@redhat.com, catalin.marinas@arm.com, akpm@linux-foundation.org From: Andrew Morton Subject: + arm64-allow-kmalloc-caches-aligned-to-the-smaller-cache_line_size.patch added to mm-unstable branch Message-Id: <20230612200417.6E129C433D2@smtp.kernel.org> Precedence: bulk Reply-To: linux-kernel@vger.kernel.org List-ID: X-Mailing-List: mm-commits@vger.kernel.org The patch titled Subject: arm64: allow kmalloc() caches aligned to the smaller cache_line_size() has been added to the -mm mm-unstable branch. Its filename is arm64-allow-kmalloc-caches-aligned-to-the-smaller-cache_line_size.patch This patch will shortly appear at https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patches/arm64-allow-kmalloc-caches-aligned-to-the-smaller-cache_line_size.patch This patch will later appear in the mm-unstable branch at git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm Before you just go and hit "reply", please: a) Consider who else should be cc'ed b) Prefer to cc a suitable mailing list as well c) Ideally: find the original patch on the mailing list and do a reply-to-all to that, adding suitable additional cc's *** Remember to use Documentation/process/submit-checklist.rst when testing your code *** The -mm tree is included into linux-next via the mm-everything branch at git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm and is updated there every 2-3 working days ------------------------------------------------------ From: Catalin Marinas Subject: arm64: allow kmalloc() caches aligned to the smaller cache_line_size() Date: Mon, 12 Jun 2023 16:31:55 +0100 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 Tested-by: Isaac J. Manjarres Cc: Will Deacon Cc: Alasdair Kergon Cc: Ard Biesheuvel Cc: Arnd Bergmann Cc: Christoph Hellwig Cc: Daniel Vetter Cc: Greg Kroah-Hartman Cc: Herbert Xu Cc: Jerry Snitselaar Cc: Joerg Roedel Cc: Jonathan Cameron Cc: Jonathan Cameron Cc: Lars-Peter Clausen Cc: Logan Gunthorpe Cc: Marc Zyngier Cc: Mark Brown Cc: Mike Snitzer Cc: "Rafael J. Wysocki" Cc: Robin Murphy Cc: Saravana Kannan Cc: Vlastimil Babka Signed-off-by: Andrew Morton --- arch/arm64/include/asm/cache.h | 3 +++ 1 file changed, 3 insertions(+) --- a/arch/arm64/include/asm/cache.h~arm64-allow-kmalloc-caches-aligned-to-the-smaller-cache_line_size +++ a/arch/arm64/include/asm/cache.h @@ -33,6 +33,7 @@ * the CPU. */ #define ARCH_DMA_MINALIGN (128) +#define ARCH_KMALLOC_MINALIGN (8) #ifndef __ASSEMBLY__ @@ -90,6 +91,8 @@ static inline int cache_line_size_of_cpu int cache_line_size(void); +#define dma_get_cache_alignment cache_line_size + /* * Read the effective value of CTR_EL0. * _ Patches currently in -mm which might be from catalin.marinas@arm.com are mm-slab-decouple-arch_kmalloc_minalign-from-arch_dma_minalign.patch dma-allow-dma_get_cache_alignment-to-be-overridden-by-the-arch-code.patch mm-slab-simplify-create_kmalloc_cache-args-and-make-it-static.patch mm-slab-limit-kmalloc-minimum-alignment-to-dma_get_cache_alignment.patch drivers-base-use-arch_dma_minalign-instead-of-arch_kmalloc_minalign.patch drivers-gpu-use-arch_dma_minalign-instead-of-arch_kmalloc_minalign.patch drivers-usb-use-arch_dma_minalign-instead-of-arch_kmalloc_minalign.patch drivers-spi-use-arch_dma_minalign-instead-of-arch_kmalloc_minalign.patch dm-crypt-use-arch_dma_minalign-instead-of-arch_kmalloc_minalign.patch iio-core-use-arch_dma_minalign-instead-of-arch_kmalloc_minalign.patch arm64-allow-kmalloc-caches-aligned-to-the-smaller-cache_line_size.patch dma-mapping-force-bouncing-if-the-kmalloc-size-is-not-cache-line-aligned.patch iommu-dma-force-bouncing-if-the-size-is-not-cacheline-aligned.patch mm-slab-reduce-the-kmalloc-minimum-alignment-if-dma-bouncing-possible.patch arm64-enable-arch_want_kmalloc_dma_bounce-for-arm64.patch