License cleanup: add SPDX GPL-2.0 license identifier to files with no license
Many source files in the tree are missing licensing information, which
makes it harder for compliance tools to determine the correct license.
By default all files without license information are under the default
license of the kernel, which is GPL version 2.
Update the files which contain no license information with the 'GPL-2.0'
SPDX license identifier. The SPDX identifier is a legally binding
shorthand, which can be used instead of the full boiler plate text.
This patch is based on work done by Thomas Gleixner and Kate Stewart and
Philippe Ombredanne.
How this work was done:
Patches were generated and checked against linux-4.14-rc6 for a subset of
the use cases:
- file had no licensing information it it.
- file was a */uapi/* one with no licensing information in it,
- file was a */uapi/* one with existing licensing information,
Further patches will be generated in subsequent months to fix up cases
where non-standard license headers were used, and references to license
had to be inferred by heuristics based on keywords.
The analysis to determine which SPDX License Identifier to be applied to
a file was done in a spreadsheet of side by side results from of the
output of two independent scanners (ScanCode & Windriver) producing SPDX
tag:value files created by Philippe Ombredanne. Philippe prepared the
base worksheet, and did an initial spot review of a few 1000 files.
The 4.13 kernel was the starting point of the analysis with 60,537 files
assessed. Kate Stewart did a file by file comparison of the scanner
results in the spreadsheet to determine which SPDX license identifier(s)
to be applied to the file. She confirmed any determination that was not
immediately clear with lawyers working with the Linux Foundation.
Criteria used to select files for SPDX license identifier tagging was:
- Files considered eligible had to be source code files.
- Make and config files were included as candidates if they contained >5
lines of source
- File already had some variant of a license header in it (even if <5
lines).
All documentation files were explicitly excluded.
The following heuristics were used to determine which SPDX license
identifiers to apply.
- when both scanners couldn't find any license traces, file was
considered to have no license information in it, and the top level
COPYING file license applied.
For non */uapi/* files that summary was:
SPDX license identifier # files
---------------------------------------------------|-------
GPL-2.0 11139
and resulted in the first patch in this series.
If that file was a */uapi/* path one, it was "GPL-2.0 WITH
Linux-syscall-note" otherwise it was "GPL-2.0". Results of that was:
SPDX license identifier # files
---------------------------------------------------|-------
GPL-2.0 WITH Linux-syscall-note 930
and resulted in the second patch in this series.
- if a file had some form of licensing information in it, and was one
of the */uapi/* ones, it was denoted with the Linux-syscall-note if
any GPL family license was found in the file or had no licensing in
it (per prior point). Results summary:
SPDX license identifier # files
---------------------------------------------------|------
GPL-2.0 WITH Linux-syscall-note 270
GPL-2.0+ WITH Linux-syscall-note 169
((GPL-2.0 WITH Linux-syscall-note) OR BSD-2-Clause) 21
((GPL-2.0 WITH Linux-syscall-note) OR BSD-3-Clause) 17
LGPL-2.1+ WITH Linux-syscall-note 15
GPL-1.0+ WITH Linux-syscall-note 14
((GPL-2.0+ WITH Linux-syscall-note) OR BSD-3-Clause) 5
LGPL-2.0+ WITH Linux-syscall-note 4
LGPL-2.1 WITH Linux-syscall-note 3
((GPL-2.0 WITH Linux-syscall-note) OR MIT) 3
((GPL-2.0 WITH Linux-syscall-note) AND MIT) 1
and that resulted in the third patch in this series.
- when the two scanners agreed on the detected license(s), that became
the concluded license(s).
- when there was disagreement between the two scanners (one detected a
license but the other didn't, or they both detected different
licenses) a manual inspection of the file occurred.
- In most cases a manual inspection of the information in the file
resulted in a clear resolution of the license that should apply (and
which scanner probably needed to revisit its heuristics).
- When it was not immediately clear, the license identifier was
confirmed with lawyers working with the Linux Foundation.
- If there was any question as to the appropriate license identifier,
the file was flagged for further research and to be revisited later
in time.
In total, over 70 hours of logged manual review was done on the
spreadsheet to determine the SPDX license identifiers to apply to the
source files by Kate, Philippe, Thomas and, in some cases, confirmation
by lawyers working with the Linux Foundation.
Kate also obtained a third independent scan of the 4.13 code base from
FOSSology, and compared selected files where the other two scanners
disagreed against that SPDX file, to see if there was new insights. The
Windriver scanner is based on an older version of FOSSology in part, so
they are related.
Thomas did random spot checks in about 500 files from the spreadsheets
for the uapi headers and agreed with SPDX license identifier in the
files he inspected. For the non-uapi files Thomas did random spot checks
in about 15000 files.
In initial set of patches against 4.14-rc6, 3 files were found to have
copy/paste license identifier errors, and have been fixed to reflect the
correct identifier.
Additionally Philippe spent 10 hours this week doing a detailed manual
inspection and review of the 12,461 patched files from the initial patch
version early this week with:
- a full scancode scan run, collecting the matched texts, detected
license ids and scores
- reviewing anything where there was a license detected (about 500+
files) to ensure that the applied SPDX license was correct
- reviewing anything where there was no detection but the patch license
was not GPL-2.0 WITH Linux-syscall-note to ensure that the applied
SPDX license was correct
This produced a worksheet with 20 files needing minor correction. This
worksheet was then exported into 3 different .csv files for the
different types of files to be modified.
These .csv files were then reviewed by Greg. Thomas wrote a script to
parse the csv files and add the proper SPDX tag to the file, in the
format that the file expected. This script was further refined by Greg
based on the output to detect more types of files automatically and to
distinguish between header and source .c files (which need different
comment types.) Finally Greg ran the script using the .csv files to
generate the patches.
Reviewed-by: Kate Stewart <kstewart@linuxfoundation.org>
Reviewed-by: Philippe Ombredanne <pombredanne@nexb.com>
Reviewed-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-11-01 21:07:57 +07:00
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# SPDX-License-Identifier: GPL-2.0
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2007-10-24 03:37:23 +07:00
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#
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2020-03-26 15:01:00 +07:00
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# x86 crypto algorithms
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2007-10-24 03:37:23 +07:00
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2017-06-28 22:11:06 +07:00
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OBJECT_FILES_NON_STANDARD := y
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2012-06-18 18:07:19 +07:00
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obj-$(CONFIG_CRYPTO_GLUE_HELPER_X86) += glue_helper.o
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2012-06-18 18:06:58 +07:00
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2007-10-24 03:37:23 +07:00
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obj-$(CONFIG_CRYPTO_TWOFISH_586) += twofish-i586.o
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2020-03-26 15:01:00 +07:00
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twofish-i586-y := twofish-i586-asm_32.o twofish_glue.o
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obj-$(CONFIG_CRYPTO_TWOFISH_X86_64) += twofish-x86_64.o
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twofish-x86_64-y := twofish-x86_64-asm_64.o twofish_glue.o
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obj-$(CONFIG_CRYPTO_TWOFISH_X86_64_3WAY) += twofish-x86_64-3way.o
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twofish-x86_64-3way-y := twofish-x86_64-asm_64-3way.o twofish_glue_3way.o
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obj-$(CONFIG_CRYPTO_TWOFISH_AVX_X86_64) += twofish-avx-x86_64.o
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twofish-avx-x86_64-y := twofish-avx-x86_64-asm_64.o twofish_avx_glue.o
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2011-11-09 21:26:31 +07:00
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obj-$(CONFIG_CRYPTO_SERPENT_SSE2_586) += serpent-sse2-i586.o
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2020-03-26 15:01:00 +07:00
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serpent-sse2-i586-y := serpent-sse2-i586-asm_32.o serpent_sse2_glue.o
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obj-$(CONFIG_CRYPTO_SERPENT_SSE2_X86_64) += serpent-sse2-x86_64.o
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serpent-sse2-x86_64-y := serpent-sse2-x86_64-asm_64.o serpent_sse2_glue.o
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obj-$(CONFIG_CRYPTO_SERPENT_AVX_X86_64) += serpent-avx-x86_64.o
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serpent-avx-x86_64-y := serpent-avx-x86_64-asm_64.o serpent_avx_glue.o
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obj-$(CONFIG_CRYPTO_SERPENT_AVX2_X86_64) += serpent-avx2.o
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serpent-avx2-y := serpent-avx2-asm_64.o serpent_avx2_glue.o
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2007-10-24 03:37:23 +07:00
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2014-06-10 00:59:54 +07:00
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obj-$(CONFIG_CRYPTO_DES3_EDE_X86_64) += des3_ede-x86_64.o
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2020-03-26 15:01:00 +07:00
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des3_ede-x86_64-y := des3_ede-asm_64.o des3_ede_glue.o
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2012-03-06 01:26:47 +07:00
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obj-$(CONFIG_CRYPTO_CAMELLIA_X86_64) += camellia-x86_64.o
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2020-03-26 15:01:00 +07:00
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camellia-x86_64-y := camellia-x86_64-asm_64.o camellia_glue.o
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obj-$(CONFIG_CRYPTO_CAMELLIA_AESNI_AVX_X86_64) += camellia-aesni-avx-x86_64.o
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camellia-aesni-avx-x86_64-y := camellia-aesni-avx-asm_64.o camellia_aesni_avx_glue.o
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obj-$(CONFIG_CRYPTO_CAMELLIA_AESNI_AVX2_X86_64) += camellia-aesni-avx2.o
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camellia-aesni-avx2-y := camellia-aesni-avx2-asm_64.o camellia_aesni_avx2_glue.o
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2011-09-02 05:45:22 +07:00
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obj-$(CONFIG_CRYPTO_BLOWFISH_X86_64) += blowfish-x86_64.o
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2020-03-26 15:01:00 +07:00
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blowfish-x86_64-y := blowfish-x86_64-asm_64.o blowfish_glue.o
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obj-$(CONFIG_CRYPTO_CAST5_AVX_X86_64) += cast5-avx-x86_64.o
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cast5-avx-x86_64-y := cast5-avx-x86_64-asm_64.o cast5_avx_glue.o
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obj-$(CONFIG_CRYPTO_CAST6_AVX_X86_64) += cast6-avx-x86_64.o
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cast6-avx-x86_64-y := cast6-avx-x86_64-asm_64.o cast6_avx_glue.o
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obj-$(CONFIG_CRYPTO_AEGIS128_AESNI_SSE2) += aegis128-aesni.o
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aegis128-aesni-y := aegis128-aesni-asm.o aegis128-aesni-glue.o
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2018-12-05 13:20:03 +07:00
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obj-$(CONFIG_CRYPTO_CHACHA20_X86_64) += chacha-x86_64.o
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2020-03-27 03:26:00 +07:00
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chacha-x86_64-y := chacha-avx2-x86_64.o chacha-ssse3-x86_64.o chacha_glue.o
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2020-03-26 15:01:00 +07:00
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chacha-x86_64-$(CONFIG_AS_AVX512) += chacha-avx512vl-x86_64.o
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2009-01-18 12:28:34 +07:00
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obj-$(CONFIG_CRYPTO_AES_NI_INTEL) += aesni-intel.o
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2020-03-26 15:01:00 +07:00
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aesni-intel-y := aesni-intel_asm.o aesni-intel_glue.o
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aesni-intel-$(CONFIG_64BIT) += aesni-intel_avx-x86_64.o aes_ctrby8_avx-x86_64.o
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2007-10-24 03:37:23 +07:00
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2011-08-05 01:19:25 +07:00
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obj-$(CONFIG_CRYPTO_SHA1_SSSE3) += sha1-ssse3.o
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2020-03-27 03:26:00 +07:00
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sha1-ssse3-y := sha1_avx2_x86_64_asm.o sha1_ssse3_asm.o sha1_ssse3_glue.o
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2020-03-26 15:01:00 +07:00
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sha1-ssse3-$(CONFIG_AS_SHA1_NI) += sha1_ni_asm.o
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2018-05-11 19:12:51 +07:00
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2020-03-26 15:01:00 +07:00
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obj-$(CONFIG_CRYPTO_SHA256_SSSE3) += sha256-ssse3.o
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sha256-ssse3-y := sha256-ssse3-asm.o sha256-avx-asm.o sha256-avx2-asm.o sha256_ssse3_glue.o
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sha256-ssse3-$(CONFIG_AS_SHA256_NI) += sha256_ni_asm.o
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2020-03-01 21:52:35 +07:00
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2020-03-26 15:01:00 +07:00
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obj-$(CONFIG_CRYPTO_SHA512_SSSE3) += sha512-ssse3.o
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sha512-ssse3-y := sha512-ssse3-asm.o sha512-avx-asm.o sha512-avx2-asm.o sha512_ssse3_glue.o
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2018-12-05 13:20:00 +07:00
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2020-03-26 15:00:55 +07:00
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obj-$(CONFIG_CRYPTO_BLAKE2S_X86) += blake2s-x86_64.o
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2020-03-26 15:01:00 +07:00
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blake2s-x86_64-y := blake2s-core.o blake2s-glue.o
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2013-03-24 20:34:07 +07:00
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2020-03-26 15:01:00 +07:00
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obj-$(CONFIG_CRYPTO_GHASH_CLMUL_NI_INTEL) += ghash-clmulni-intel.o
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ghash-clmulni-intel-y := ghash-clmulni-intel_asm.o ghash-clmulni-intel_glue.o
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2013-04-13 17:46:45 +07:00
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2020-03-26 15:01:00 +07:00
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obj-$(CONFIG_CRYPTO_CRC32C_INTEL) += crc32c-intel.o
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crc32c-intel-y := crc32c-intel_glue.o
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crc32c-intel-$(CONFIG_64BIT) += crc32c-pcl-intel-asm_64.o
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2007-10-24 03:37:23 +07:00
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2020-03-26 15:01:00 +07:00
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obj-$(CONFIG_CRYPTO_CRC32_PCLMUL) += crc32-pclmul.o
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crc32-pclmul-y := crc32-pclmul_asm.o crc32-pclmul_glue.o
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2013-03-24 20:34:07 +07:00
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2020-03-26 15:01:00 +07:00
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obj-$(CONFIG_CRYPTO_CRCT10DIF_PCLMUL) += crct10dif-pclmul.o
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crct10dif-pclmul-y := crct10dif-pcl-asm_64.o crct10dif-pclmul_glue.o
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2018-05-11 19:12:51 +07:00
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2020-03-26 15:01:00 +07:00
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obj-$(CONFIG_CRYPTO_POLY1305_X86_64) += poly1305-x86_64.o
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crypto: x86/poly1305 - wire up faster implementations for kernel
These x86_64 vectorized implementations support AVX, AVX-2, and AVX512F.
The AVX-512F implementation is disabled on Skylake, due to throttling,
but it is quite fast on >= Cannonlake.
On the left is cycle counts on a Core i7 6700HQ using the AVX-2
codepath, comparing this implementation ("new") to the implementation in
the current crypto api ("old"). On the right are benchmarks on a Xeon
Gold 5120 using the AVX-512 codepath. The new implementation is faster
on all benchmarks.
AVX-2 AVX-512
--------- -----------
size old new size old new
---- ---- ---- ---- ---- ----
0 70 68 0 74 70
16 92 90 16 96 92
32 134 104 32 136 106
48 172 120 48 184 124
64 218 136 64 218 138
80 254 158 80 260 160
96 298 174 96 300 176
112 342 192 112 342 194
128 388 212 128 384 212
144 428 228 144 420 226
160 466 246 160 464 248
176 510 264 176 504 264
192 550 282 192 544 282
208 594 302 208 582 300
224 628 316 224 624 318
240 676 334 240 662 338
256 716 354 256 708 358
272 764 374 272 748 372
288 802 352 288 788 358
304 420 366 304 422 370
320 428 360 320 432 364
336 484 378 336 486 380
352 426 384 352 434 390
368 478 400 368 480 408
384 488 394 384 490 398
400 542 408 400 542 412
416 486 416 416 492 426
432 534 430 432 538 436
448 544 422 448 546 432
464 600 438 464 600 448
480 540 448 480 548 456
496 594 464 496 594 476
512 602 456 512 606 470
528 656 476 528 656 480
544 600 480 544 606 498
560 650 494 560 652 512
576 664 490 576 662 508
592 714 508 592 716 522
608 656 514 608 664 538
624 708 532 624 710 552
640 716 524 640 720 516
656 770 536 656 772 526
672 716 548 672 722 544
688 770 562 688 768 556
704 774 552 704 778 556
720 826 568 720 832 568
736 768 574 736 780 584
752 822 592 752 826 600
768 830 584 768 836 560
784 884 602 784 888 572
800 828 610 800 838 588
816 884 628 816 884 604
832 888 618 832 894 598
848 942 632 848 946 612
864 884 644 864 896 628
880 936 660 880 942 644
896 948 652 896 952 608
912 1000 664 912 1004 616
928 942 676 928 954 634
944 994 690 944 1000 646
960 1002 680 960 1008 646
976 1054 694 976 1062 658
992 1002 706 992 1012 674
1008 1052 720 1008 1058 690
This commit wires in the prior implementation from Andy, and makes the
following changes to be suitable for kernel land.
- Some cosmetic and structural changes, like renaming labels to
.Lname, constants, and other Linux conventions, as well as making
the code easy for us to maintain moving forward.
- CPU feature checking is done in C by the glue code.
- We avoid jumping into the middle of functions, to appease objtool,
and instead parameterize shared code.
- We maintain frame pointers so that stack traces make sense.
- We remove the dependency on the perl xlate code, which transforms
the output into things that assemblers we don't care about use.
Importantly, none of our changes affect the arithmetic or core code, but
just involve the differing environment of kernel space.
Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
Signed-off-by: Samuel Neves <sneves@dei.uc.pt>
Co-developed-by: Samuel Neves <sneves@dei.uc.pt>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2020-01-06 10:40:48 +07:00
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poly1305-x86_64-y := poly1305-x86_64-cryptogams.o poly1305_glue.o
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targets += poly1305-x86_64-cryptogams.S
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2018-12-05 13:20:00 +07:00
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2020-03-26 15:01:00 +07:00
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obj-$(CONFIG_CRYPTO_NHPOLY1305_SSE2) += nhpoly1305-sse2.o
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nhpoly1305-sse2-y := nh-sse2-x86_64.o nhpoly1305-sse2-glue.o
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obj-$(CONFIG_CRYPTO_NHPOLY1305_AVX2) += nhpoly1305-avx2.o
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nhpoly1305-avx2-y := nh-avx2-x86_64.o nhpoly1305-avx2-glue.o
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2018-11-20 23:30:48 +07:00
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2020-03-26 15:01:00 +07:00
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obj-$(CONFIG_CRYPTO_CURVE25519_X86) += curve25519-x86_64.o
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crypto: x86/poly1305 - wire up faster implementations for kernel
These x86_64 vectorized implementations support AVX, AVX-2, and AVX512F.
The AVX-512F implementation is disabled on Skylake, due to throttling,
but it is quite fast on >= Cannonlake.
On the left is cycle counts on a Core i7 6700HQ using the AVX-2
codepath, comparing this implementation ("new") to the implementation in
the current crypto api ("old"). On the right are benchmarks on a Xeon
Gold 5120 using the AVX-512 codepath. The new implementation is faster
on all benchmarks.
AVX-2 AVX-512
--------- -----------
size old new size old new
---- ---- ---- ---- ---- ----
0 70 68 0 74 70
16 92 90 16 96 92
32 134 104 32 136 106
48 172 120 48 184 124
64 218 136 64 218 138
80 254 158 80 260 160
96 298 174 96 300 176
112 342 192 112 342 194
128 388 212 128 384 212
144 428 228 144 420 226
160 466 246 160 464 248
176 510 264 176 504 264
192 550 282 192 544 282
208 594 302 208 582 300
224 628 316 224 624 318
240 676 334 240 662 338
256 716 354 256 708 358
272 764 374 272 748 372
288 802 352 288 788 358
304 420 366 304 422 370
320 428 360 320 432 364
336 484 378 336 486 380
352 426 384 352 434 390
368 478 400 368 480 408
384 488 394 384 490 398
400 542 408 400 542 412
416 486 416 416 492 426
432 534 430 432 538 436
448 544 422 448 546 432
464 600 438 464 600 448
480 540 448 480 548 456
496 594 464 496 594 476
512 602 456 512 606 470
528 656 476 528 656 480
544 600 480 544 606 498
560 650 494 560 652 512
576 664 490 576 662 508
592 714 508 592 716 522
608 656 514 608 664 538
624 708 532 624 710 552
640 716 524 640 720 516
656 770 536 656 772 526
672 716 548 672 722 544
688 770 562 688 768 556
704 774 552 704 778 556
720 826 568 720 832 568
736 768 574 736 780 584
752 822 592 752 826 600
768 830 584 768 836 560
784 884 602 784 888 572
800 828 610 800 838 588
816 884 628 816 884 604
832 888 618 832 894 598
848 942 632 848 946 612
864 884 644 864 896 628
880 936 660 880 942 644
896 948 652 896 952 608
912 1000 664 912 1004 616
928 942 676 928 954 634
944 994 690 944 1000 646
960 1002 680 960 1008 646
976 1054 694 976 1062 658
992 1002 706 992 1012 674
1008 1052 720 1008 1058 690
This commit wires in the prior implementation from Andy, and makes the
following changes to be suitable for kernel land.
- Some cosmetic and structural changes, like renaming labels to
.Lname, constants, and other Linux conventions, as well as making
the code easy for us to maintain moving forward.
- CPU feature checking is done in C by the glue code.
- We avoid jumping into the middle of functions, to appease objtool,
and instead parameterize shared code.
- We maintain frame pointers so that stack traces make sense.
- We remove the dependency on the perl xlate code, which transforms
the output into things that assemblers we don't care about use.
Importantly, none of our changes affect the arithmetic or core code, but
just involve the differing environment of kernel space.
Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
Signed-off-by: Samuel Neves <sneves@dei.uc.pt>
Co-developed-by: Samuel Neves <sneves@dei.uc.pt>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2020-01-06 10:40:48 +07:00
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quiet_cmd_perlasm = PERLASM $@
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cmd_perlasm = $(PERL) $< > $@
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$(obj)/%.S: $(src)/%.pl FORCE
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$(call if_changed,perlasm)
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