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 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 0D25ECD484E for ; Tue, 12 May 2026 05:22:55 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender:List-Subscribe:List-Help :List-Post:List-Archive:List-Unsubscribe:List-Id:Content-Transfer-Encoding: MIME-Version:Message-ID:Date:Subject:Cc:To:From:Reply-To:Content-Type: Content-ID:Content-Description:Resent-Date:Resent-From:Resent-Sender: Resent-To:Resent-Cc:Resent-Message-ID:In-Reply-To:References:List-Owner; bh=hWNuCSvOTgL+hl7LSeigsUSvduHQkUgOajdKryVpMzA=; b=3Sxu6NwRQ/FbAttmqjksmOnE2N fwejGezjkDF9I53uX8C4sIamoTfJKMtr1NIO7T4NUatnxq3w7Ca8S3SUfZFKtd1JEpjBZecND2cig K5tXUagU5hng77JaxpWwuKauIDgGS5VxKJUJsiq9SViY3LWJCCETbxn8T1MUEOQ1mKwqpxIFCjSMz cI3jXnpSGtzf4njgORz4LNI57SlB239dJeN7MZJ8FqdghpT2lPNx4B0x4EkwpLpCgc/hrcLnsaR4r 8uAi2gBn4fAORY6qISn40SIwuu3qh5CIvQjGRkkc051B9qWnEv9WDFJg5dDCQ2sQYiAyDJQNj7CGZ kbf1uusg==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.99.1 #2 (Red Hat Linux)) id 1wMfZv-0000000FaSS-2Dh1; Tue, 12 May 2026 05:22:47 +0000 Received: from 2a02-8389-2341-5b80-decc-1a96-daaa-a2cc.cable.dynamic.v6.surfer.at ([2a02:8389:2341:5b80:decc:1a96:daaa:a2cc] helo=localhost) by bombadil.infradead.org with esmtpsa (Exim 4.99.1 #2 (Red Hat Linux)) id 1wMfZo-0000000FaGb-2eLn; Tue, 12 May 2026 05:22:41 +0000 From: Christoph Hellwig To: Andrew Morton Cc: Catalin Marinas , Will Deacon , Ard Biesheuvel , Huacai Chen , WANG Xuerui , Madhavan Srinivasan , Michael Ellerman , Nicholas Piggin , "Christophe Leroy (CS GROUP)" , Paul Walmsley , Palmer Dabbelt , Albert Ou , Alexandre Ghiti , Heiko Carstens , Vasily Gorbik , Alexander Gordeev , Christian Borntraeger , Sven Schnelle , Thomas Gleixner , Ingo Molnar , Borislav Petkov , Dave Hansen , x86@kernel.org, "H. Peter Anvin" , Herbert Xu , Dan Williams , Chris Mason , David Sterba , Arnd Bergmann , Song Liu , Yu Kuai , Li Nan , linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, loongarch@lists.linux.dev, linuxppc-dev@lists.ozlabs.org, linux-riscv@lists.infradead.org, linux-s390@vger.kernel.org, linux-crypto@vger.kernel.org, linux-btrfs@vger.kernel.org, linux-arch@vger.kernel.org, linux-raid@vger.kernel.org Subject: cleanup the RAID6 P/Q library v2 Date: Tue, 12 May 2026 07:20:40 +0200 Message-ID: <20260512052230.2947683-1-hch@lst.de> X-Mailer: git-send-email 2.53.0 MIME-Version: 1.0 Content-Transfer-Encoding: 8bit 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 all, this series cleans up the RAID6 P/Q library to match the recent updates to the RAID 5 XOR library and other CRC/crypto libraries. This includes providing properly documented external interfaces, hiding the internals, using static_call instead of indirect calls and turning the user space test suite into an in-kernel kunit test which is also extended to improve coverage. Note that this changes registration so that non-priority algorithms are not registered, which greatly helps with the benchmark time at boot time. I'd like to encourage all architecture maintainers to see if they can further optimized this by registering as few as possible algorithms when there is a clear benefit in optimized or more unrolled implementations. This series sits on top of the "cleanup the RAID5 XOR library v3" series. A git tree is also available here: git://git.infradead.org/users/hch/misc.git lib-raid6 Gitweb: https://git.infradead.org/?p=users/hch/misc.git;a=shortlog;h=refs/heads/lib-raid6 Changes since v1: - fix arm64 objdir != srcdir builds - call the kunit module raid6_kunit.ko from the beginning - update MAINTAINERS - don't require preemptible context and apply the same restrictions as the merged version of the XOR API - fix the arm64 default in Kconfig - pick the last registered (and presumably most optimized) algorithm when benchmarking is disabled - port over the randomization fixes from the XOR series - misc other kunit cleanups - require at least 4 devices for RAID6 to skip broken special cases Diffstat: b/Documentation/crypto/async-tx-api.rst | 4 b/MAINTAINERS | 2 b/crypto/async_tx/async_pq.c | 9 b/crypto/async_tx/async_raid6_recov.c | 9 b/drivers/dma/bcm-sba-raid.c | 1 b/drivers/md/raid5.c | 4 b/fs/btrfs/raid56.c | 8 b/fs/btrfs/volumes.c | 2 b/include/linux/raid/pq.h | 233 +------------ b/include/linux/raid/pq_tables.h | 19 + b/lib/Kconfig | 11 b/lib/Makefile | 1 b/lib/raid/Kconfig | 33 + b/lib/raid/Makefile | 2 b/lib/raid/raid6/Makefile | 126 +++++++ b/lib/raid/raid6/algos.c | 383 ++++++++++++++++++++++ b/lib/raid/raid6/algos.h | 41 ++ b/lib/raid/raid6/arm/neon.c | 23 - b/lib/raid/raid6/arm/neon.uc | 2 b/lib/raid/raid6/arm/pq_arch.h | 24 + b/lib/raid/raid6/arm/recov_neon.c | 27 - b/lib/raid/raid6/arm/recov_neon_inner.c | 2 b/lib/raid/raid6/arm64/pq_arch.h | 1 b/lib/raid/raid6/int.uc | 10 b/lib/raid/raid6/loongarch/loongarch_simd.c | 31 - b/lib/raid/raid6/loongarch/pq_arch.h | 23 + b/lib/raid/raid6/loongarch/recov_loongarch_simd.c | 39 -- b/lib/raid/raid6/mktables.c | 28 - b/lib/raid/raid6/powerpc/altivec.uc | 32 - b/lib/raid/raid6/powerpc/pq_arch.h | 31 + b/lib/raid/raid6/powerpc/vpermxor.uc | 29 - b/lib/raid/raid6/recov.c | 62 --- b/lib/raid/raid6/riscv/pq_arch.h | 21 + b/lib/raid/raid6/riscv/recov_rvv.c | 14 b/lib/raid/raid6/riscv/rvv.h | 26 - b/lib/raid/raid6/s390/pq_arch.h | 15 b/lib/raid/raid6/s390/recov_s390xc.c | 14 b/lib/raid/raid6/s390/s390vx.uc | 15 b/lib/raid/raid6/tests/Makefile | 3 b/lib/raid/raid6/tests/raid6_kunit.c | 321 ++++++++++++++++++ b/lib/raid/raid6/x86/avx2.c | 47 -- b/lib/raid/raid6/x86/avx512.c | 57 +-- b/lib/raid/raid6/x86/mmx.c | 39 -- b/lib/raid/raid6/x86/pq_arch.h | 97 +++++ b/lib/raid/raid6/x86/recov_avx2.c | 22 - b/lib/raid/raid6/x86/recov_avx512.c | 26 - b/lib/raid/raid6/x86/recov_ssse3.c | 23 - b/lib/raid/raid6/x86/sse1.c | 49 -- b/lib/raid/raid6/x86/sse2.c | 47 -- lib/raid6/Makefile | 83 ---- lib/raid6/algos.c | 291 ---------------- lib/raid6/loongarch.h | 38 -- lib/raid6/test/.gitignore | 3 lib/raid6/test/Makefile | 156 -------- lib/raid6/test/test.c | 152 -------- lib/raid6/x86.h | 75 ---- 56 files changed, 1369 insertions(+), 1517 deletions(-)