mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/kdave/btrfs-progs.git
synced 2024-11-15 00:04:23 +08:00
992be8b50a
Copy faster implementation of crc32c from linux kernel as of 6.5-rc7
(x86_64, arch/x86/crypto/crc32c-pcl-intel-asm_64.S). This needs
assembler build support, so detect target architecture so
cross-compilation still works.
Add a special CPU flag so the old and new implementations can be
benchmarked and verified separately.
Sample benchmark:
CPU flags: 0x1ff
CPU features: SSE2 SSSE3 SSE41 SSE42 SHA AVX AVX2 CRC32C_PCL
Block size: 4096
Iterations: 1000000
Implementation: builtin
Units: CPU cycles
NULL-NOP: cycles: 77177218, cycles/i 77
NULL-MEMCPY: cycles: 226313072, cycles/i 226, 62133.395 MiB/s
CRC32C-ref: cycles: 24418596066, cycles/i 24418, 575.859 MiB/s
CRC32C-NI: cycles: 1188335920, cycles/i 1188, 11833.073 MiB/s
CRC32C-PCL: cycles: 463193456, cycles/i 463, 30358.037 MiB/s
XXHASH: cycles: 851606646, cycles/i 851, 16511.916 MiB/s
SHA256-ref: cycles: 74476234956, cycles/i 74476, 188.808 MiB/s
SHA256-NI: cycles: 34198637428, cycles/i 34198, 411.177 MiB/s
BLAKE2-ref: cycles: 14761411664, cycles/i 14761, 952.597 MiB/s
BLAKE2-SSE2: cycles: 18101896796, cycles/i 18101, 776.807 MiB/s
BLAKE2-SSE41: cycles: 12599091062, cycles/i 12599, 1116.087 MiB/s
BLAKE2-AVX2: cycles: 9668247506, cycles/i 9668, 1454.418 MiB/s
The new implementation is about 2.5x faster.
Note: there new version does not work on musl because of linkage
problems (relocations in .rodata), so it's still using the old
implementation.
Signed-off-by: David Sterba <dsterba@suse.com>
58 lines
1.8 KiB
PHP
58 lines
1.8 KiB
PHP
# Variables set during configure phase:
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# * build environment, paths
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# * features (eg. convert, documentation)
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export
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CC = @CC@
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LN_S = @LN_S@
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AR = @AR@
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RM = @RM@
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RMDIR = @RMDIR@
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INSTALL = @INSTALL@
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DISABLE_DOCUMENTATION = @DISABLE_DOCUMENTATION@
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DISABLE_BTRFSCONVERT = @DISABLE_BTRFSCONVERT@
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BUILD_PROGRAMS = @BUILD_PROGRAMS@
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BUILD_SHARED_LIBRARIES = @BUILD_SHARED_LIBRARIES@
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BUILD_STATIC_LIBRARIES = @BUILD_STATIC_LIBRARIES@
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BTRFSCONVERT_EXT2 = @BTRFSCONVERT_EXT2@
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BTRFSCONVERT_REISERFS = @BTRFSCONVERT_REISERFS@
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COMPRESSION_LZO = @COMPRESSION_LZO@
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COMPRESSION_ZSTD = @COMPRESSION_ZSTD@
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PYTHON_BINDINGS = @PYTHON_BINDINGS@
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PYTHON = @PYTHON@
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PYTHON_CFLAGS = @PYTHON_CFLAGS@
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CRYPTOPROVIDER_BUILTIN = @CRYPTOPROVIDER_BUILTIN@
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CRYPTO_CFLAGS = @GCRYPT_CFLAGS@ @SODIUM_CFLAGS@ @KCAPI_CFLAGS@
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HAVE_CFLAG_msse2 = @HAVE_CFLAG_msse2@
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HAVE_CFLAG_msse41 = @HAVE_CFLAG_msse41@
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HAVE_CFLAG_mavx2 = @HAVE_CFLAG_mavx2@
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HAVE_CFLAG_msha = @HAVE_CFLAG_msha@
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TARGET_CPU = @target_cpu@
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HAVE_GLIBC = @HAVE_GLIBC@
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SUBST_CFLAGS = @CFLAGS@
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SUBST_LDFLAGS = @LDFLAGS@
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LIBS_BASE = @UUID_LIBS@ @BLKID_LIBS@ @LIBUDEV_LIBS@ -L. -pthread
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LIBS_COMP = @ZLIB_LIBS@ @LZO2_LIBS@ @ZSTD_LIBS@
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LIBS_PYTHON = @PYTHON_LIBS@
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LIBS_CRYPTO = @GCRYPT_LIBS@ @SODIUM_LIBS@ @KCAPI_LIBS@
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STATIC_LIBS_BASE = @UUID_LIBS_STATIC@ @BLKID_LIBS_STATIC@ -L. -pthread
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STATIC_LIBS_COMP = @ZLIB_LIBS_STATIC@ @LZO2_LIBS_STATIC@ @ZSTD_LIBS_STATIC@
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prefix ?= @prefix@
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exec_prefix = @exec_prefix@
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bindir = @bindir@
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libdir ?= @libdir@
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incdir = @includedir@
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udevdir = @UDEVDIR@
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udevruledir = ${udevdir}/rules.d
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pkgconfigdir = @pkgconfigdir@
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# external libs required by various binaries; for btrfs-foo,
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# specify btrfs_foo_libs = <list of libs>; see $($(subst...)) rules in Makefile
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btrfs_convert_libs = @EXT2FS_LIBS@ @COM_ERR_LIBS@ @REISERFS_LIBS@
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MAKEFILE_INC_INCLUDED = yes
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