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https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
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2aa14b1ab2
Updates the kernel's zstd library to v1.5.2, the latest zstd release. The upstream tag it is updated to is `v1.5.2-kernel`, which contains several cherry-picked commits on top of the v1.5.2 release which are required for the kernel update. I will create this tag once the PR is ready to merge, until then reference the temporary upstream branch `v1.5.2-kernel-cherrypicks`. I plan to submit this patch as part of the v6.2 merge window. I've done basic build testing & testing on x86-64, i386, and aarch64. I'm merging these patches into my `zstd-next` branch, which is pulled into `linux-next` for further testing. I've benchmarked BtrFS with zstd compression on a x86-64 machine, and saw these results. Decompression speed is a small win across the board. The lower compression levels 1-4 see both compression speed and compression ratio wins. The higher compression levels see a small compression speed loss and about neutral ratio. I expect the lower compression levels to be used much more heavily than the high compression levels, so this should be a net win. Level CTime DTime Ratio 1 -2.95% -1.1% -0.7% 3 -3.5% -1.2% -0.5% 5 +3.7% -1.0% +0.0% 7 +3.2% -0.9% +0.0% 9 -4.3% -0.8% +0.1% Signed-off-by: Nick Terrell <terrelln@fb.com>
34 lines
1.1 KiB
C
34 lines
1.1 KiB
C
/* SPDX-License-Identifier: GPL-2.0+ OR BSD-3-Clause */
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/*
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* Copyright (c) Facebook, Inc.
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* All rights reserved.
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*
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* This source code is licensed under both the BSD-style license (found in the
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* LICENSE file in the root directory of this source tree) and the GPLv2 (found
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* in the COPYING file in the root directory of this source tree).
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* You may select, at your option, one of the above-listed licenses.
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*/
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/*
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* This file includes every .c file needed for decompression.
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* It is used by lib/decompress_unzstd.c to include the decompression
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* source into the translation-unit, so it can be used for kernel
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* decompression.
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*/
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/*
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* Disable the ASM Huffman implementation because we need to
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* include all the sources.
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*/
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#define ZSTD_DISABLE_ASM 1
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#include "common/debug.c"
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#include "common/entropy_common.c"
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#include "common/error_private.c"
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#include "common/fse_decompress.c"
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#include "common/zstd_common.c"
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#include "decompress/huf_decompress.c"
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#include "decompress/zstd_ddict.c"
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#include "decompress/zstd_decompress.c"
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#include "decompress/zstd_decompress_block.c"
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#include "zstd_decompress_module.c"
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