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Drop the pointless mention of the file name, and use standard formatting for the top of file comments. Link: https://lore.kernel.org/20260518051804.462141-14-hch@lst.de Signed-off-by: Christoph Hellwig <hch@lst.de> Acked-by: Ard Biesheuvel <ardb@kernel.org> Tested-by: Ard Biesheuvel <ardb@kernel.org> # kunit only on arm64 Cc: Albert Ou <aou@eecs.berkeley.edu> Cc: Alexander Gordeev <agordeev@linux.ibm.com> Cc: Alexandre Ghiti <alex@ghiti.fr> Cc: Arnd Bergmann <arnd@arndb.de> Cc: "Borislav Petkov (AMD)" <bp@alien8.de> Cc: Catalin Marinas <catalin.marinas@arm.com> Cc: Chris Mason <clm@fb.com> Cc: Christian Borntraeger <borntraeger@linux.ibm.com> Cc: Dan Williams <dan.j.williams@intel.com> Cc: David Sterba <dsterba@suse.com> Cc: Heiko Carstens <hca@linux.ibm.com> Cc: Herbert Xu <herbert@gondor.apana.org.au> Cc: "H. Peter Anvin" <hpa@zytor.com> Cc: Huacai Chen <chenhuacai@kernel.org> Cc: Ingo Molnar <mingo@redhat.com> Cc: Li Nan <linan122@huawei.com> Cc: Madhavan Srinivasan <maddy@linux.ibm.com> Cc: Michael Ellerman <mpe@ellerman.id.au> Cc: Nicholas Piggin <npiggin@gmail.com> Cc: Palmer Dabbelt <palmer@dabbelt.com> Cc: Song Liu <song@kernel.org> Cc: Sven Schnelle <svens@linux.ibm.com> Cc: Vasily Gorbik <gor@linux.ibm.com> Cc: WANG Xuerui <kernel@xen0n.name> Cc: Will Deacon <will@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
52 lines
1.7 KiB
C
52 lines
1.7 KiB
C
// SPDX-License-Identifier: GPL-2.0-only
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/*
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* RAID6 syndrome calculation using ARM NEON intrinsics
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*
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* Copyright (C) 2013 Linaro Ltd <ard.biesheuvel@linaro.org>
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*/
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#include <asm/simd.h>
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#include "algos.h"
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/*
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* There are 2 reasons these wrappers are kept in a separate compilation unit
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* from the actual implementations in neonN.c (generated from neon.uc by
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* unroll.awk):
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* - the actual implementations use NEON intrinsics, and the GCC support header
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* (arm_neon.h) is not fully compatible (type wise) with the kernel;
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* - the neonN.c files are compiled with -mfpu=neon and optimization enabled,
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* and we have to make sure that we never use *any* NEON/VFP instructions
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* outside a kernel_neon_begin()/kernel_neon_end() pair.
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*/
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#define RAID6_NEON_WRAPPER(_n) \
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static void raid6_neon ## _n ## _gen_syndrome(int disks, \
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size_t bytes, void **ptrs) \
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{ \
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void raid6_neon ## _n ## _gen_syndrome_real(int, \
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unsigned long, void**); \
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scoped_ksimd() \
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raid6_neon ## _n ## _gen_syndrome_real(disks, \
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(unsigned long)bytes, ptrs); \
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} \
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static void raid6_neon ## _n ## _xor_syndrome(int disks, \
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int start, int stop, \
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size_t bytes, void **ptrs) \
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{ \
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void raid6_neon ## _n ## _xor_syndrome_real(int, \
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int, int, unsigned long, void**); \
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scoped_ksimd() \
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raid6_neon ## _n ## _xor_syndrome_real(disks, \
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start, stop, (unsigned long)bytes, ptrs);\
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} \
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struct raid6_calls const raid6_neonx ## _n = { \
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.gen_syndrome = raid6_neon ## _n ## _gen_syndrome, \
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.xor_syndrome = raid6_neon ## _n ## _xor_syndrome, \
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.name = "neonx" #_n, \
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}
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RAID6_NEON_WRAPPER(1);
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RAID6_NEON_WRAPPER(2);
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RAID6_NEON_WRAPPER(4);
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RAID6_NEON_WRAPPER(8);
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