kernel/linux
0
Fork 0
mirror of https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/ synced 2026-11-10 20:48:12 +00:00
Code Issues Releases Packages Activity
linux/lib/raid6/avx2.c

470 lines
17 KiB
Raw Normal View History

treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 48 Based on 1 normalized pattern(s): this program is free software you can redistribute it and or modify it under the terms of the gnu general public license as published by the free software foundation inc 53 temple place ste 330 boston ma 02111 1307 usa either version 2 of the license or at your option any later version incorporated herein by reference extracted by the scancode license scanner the SPDX license identifier GPL-2.0-or-later has been chosen to replace the boilerplate/reference in 13 file(s). Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Allison Randal <allison@lohutok.net> Reviewed-by: Kate Stewart <kstewart@linuxfoundation.org> Cc: linux-spdx@vger.kernel.org Link: https://lkml.kernel.org/r/20190520170858.645641371@linutronix.de Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-05-20 19:08:13 +02:00
lib/raid6: Add AVX2 optimized gen_syndrome functions Add AVX2 optimized gen_syndrom functions, which is simply based on sse2.c written by hpa. Signed-off-by: Yuanhan Liu <yuanhan.liu@linux.intel.com> Reviewed-by: H. Peter Anvin <hpa@zytor.com> Signed-off-by: Jim Kukunas <james.t.kukunas@linux.intel.com> Signed-off-by: NeilBrown <neilb@suse.de>
2012-11-30 13:10:39 -08:00
lib/raid6: Add AVX2 optimized xor_syndrome functions Implement the AVX2 optimization of RAID6 xor_syndrome functions which is simply based on sse2.c written by hpa. Cc: H. Peter Anvin <hpa@linux.intel.com> Cc: Yuanhan Liu <yuanhan.liu@intel.com> Cc: Fenghua Yu <fenghua.yu@intel.com> Signed-off-by: Gayatri Kammela <gayatri.kammela@intel.com> Signed-off-by: Shaohua Li <shli@fb.com>
2016-09-30 11:14:49 -07:00
lib/raid6: Add AVX2 optimized gen_syndrome functions Add AVX2 optimized gen_syndrom functions, which is simply based on sse2.c written by hpa. Signed-off-by: Yuanhan Liu <yuanhan.liu@linux.intel.com> Reviewed-by: H. Peter Anvin <hpa@zytor.com> Signed-off-by: Jim Kukunas <james.t.kukunas@linux.intel.com> Signed-off-by: NeilBrown <neilb@suse.de>
2012-11-30 13:10:39 -08:00
lib/raid6: Add AVX2 optimized xor_syndrome functions Implement the AVX2 optimization of RAID6 xor_syndrome functions which is simply based on sse2.c written by hpa. Cc: H. Peter Anvin <hpa@linux.intel.com> Cc: Yuanhan Liu <yuanhan.liu@intel.com> Cc: Fenghua Yu <fenghua.yu@intel.com> Signed-off-by: Gayatri Kammela <gayatri.kammela@intel.com> Signed-off-by: Shaohua Li <shli@fb.com>
2016-09-30 11:14:49 -07:00
lib/raid6: Add AVX2 optimized gen_syndrome functions Add AVX2 optimized gen_syndrom functions, which is simply based on sse2.c written by hpa. Signed-off-by: Yuanhan Liu <yuanhan.liu@linux.intel.com> Reviewed-by: H. Peter Anvin <hpa@zytor.com> Signed-off-by: Jim Kukunas <james.t.kukunas@linux.intel.com> Signed-off-by: NeilBrown <neilb@suse.de>
2012-11-30 13:10:39 -08:00
lib/raid6: Use strict priority ranking for pq gen() benchmarking On x86_64, currently 3 variants of AVX512, 3 variants of AVX2 and 3 variants of SSE2 are benchmarked on initialization, taking between 144-153 jiffies. Testing across a hardware pool of various generations of intel cpus I could not find a single case where SSE2 won over AVX2 or AVX512. There are cases where AVX2 wins over AVX512 however. Change "prefer" into an integer priority field (similar to how recov selection works) to have more than one ranking level available, which is backwards compatible with existing behavior. Give AVX2/512 variants higher priority over SSE2 in order to skip SSE testing when AVX is available. in a AVX2/x86_64/HZ=250 case this saves in the order of 200ms of initialization time. Signed-off-by: Dirk Müller <dmueller@suse.de> Acked-by: Paul Menzel <pmenzel@molgen.mpg.de> Signed-off-by: Song Liu <song@kernel.org>
2022-01-05 17:38:47 +01:00
lib/raid6: Add AVX2 optimized gen_syndrome functions Add AVX2 optimized gen_syndrom functions, which is simply based on sse2.c written by hpa. Signed-off-by: Yuanhan Liu <yuanhan.liu@linux.intel.com> Reviewed-by: H. Peter Anvin <hpa@zytor.com> Signed-off-by: Jim Kukunas <james.t.kukunas@linux.intel.com> Signed-off-by: NeilBrown <neilb@suse.de>
2012-11-30 13:10:39 -08:00
lib/raid6: Add AVX2 optimized xor_syndrome functions Implement the AVX2 optimization of RAID6 xor_syndrome functions which is simply based on sse2.c written by hpa. Cc: H. Peter Anvin <hpa@linux.intel.com> Cc: Yuanhan Liu <yuanhan.liu@intel.com> Cc: Fenghua Yu <fenghua.yu@intel.com> Signed-off-by: Gayatri Kammela <gayatri.kammela@intel.com> Signed-off-by: Shaohua Li <shli@fb.com>
2016-09-30 11:14:49 -07:00
lib/raid6: Add AVX2 optimized gen_syndrome functions Add AVX2 optimized gen_syndrom functions, which is simply based on sse2.c written by hpa. Signed-off-by: Yuanhan Liu <yuanhan.liu@linux.intel.com> Reviewed-by: H. Peter Anvin <hpa@zytor.com> Signed-off-by: Jim Kukunas <james.t.kukunas@linux.intel.com> Signed-off-by: NeilBrown <neilb@suse.de>
2012-11-30 13:10:39 -08:00
lib/raid6: Add AVX2 optimized xor_syndrome functions Implement the AVX2 optimization of RAID6 xor_syndrome functions which is simply based on sse2.c written by hpa. Cc: H. Peter Anvin <hpa@linux.intel.com> Cc: Yuanhan Liu <yuanhan.liu@intel.com> Cc: Fenghua Yu <fenghua.yu@intel.com> Signed-off-by: Gayatri Kammela <gayatri.kammela@intel.com> Signed-off-by: Shaohua Li <shli@fb.com>
2016-09-30 11:14:49 -07:00
lib/raid6: Add AVX2 optimized gen_syndrome functions Add AVX2 optimized gen_syndrom functions, which is simply based on sse2.c written by hpa. Signed-off-by: Yuanhan Liu <yuanhan.liu@linux.intel.com> Reviewed-by: H. Peter Anvin <hpa@zytor.com> Signed-off-by: Jim Kukunas <james.t.kukunas@linux.intel.com> Signed-off-by: NeilBrown <neilb@suse.de>
2012-11-30 13:10:39 -08:00
lib/raid6: Use strict priority ranking for pq gen() benchmarking On x86_64, currently 3 variants of AVX512, 3 variants of AVX2 and 3 variants of SSE2 are benchmarked on initialization, taking between 144-153 jiffies. Testing across a hardware pool of various generations of intel cpus I could not find a single case where SSE2 won over AVX2 or AVX512. There are cases where AVX2 wins over AVX512 however. Change "prefer" into an integer priority field (similar to how recov selection works) to have more than one ranking level available, which is backwards compatible with existing behavior. Give AVX2/512 variants higher priority over SSE2 in order to skip SSE testing when AVX is available. in a AVX2/x86_64/HZ=250 case this saves in the order of 200ms of initialization time. Signed-off-by: Dirk Müller <dmueller@suse.de> Acked-by: Paul Menzel <pmenzel@molgen.mpg.de> Signed-off-by: Song Liu <song@kernel.org>
2022-01-05 17:38:47 +01:00
lib/raid6: Add AVX2 optimized gen_syndrome functions Add AVX2 optimized gen_syndrom functions, which is simply based on sse2.c written by hpa. Signed-off-by: Yuanhan Liu <yuanhan.liu@linux.intel.com> Reviewed-by: H. Peter Anvin <hpa@zytor.com> Signed-off-by: Jim Kukunas <james.t.kukunas@linux.intel.com> Signed-off-by: NeilBrown <neilb@suse.de>
2012-11-30 13:10:39 -08:00
lib/raid6: Add AVX2 optimized xor_syndrome functions Implement the AVX2 optimization of RAID6 xor_syndrome functions which is simply based on sse2.c written by hpa. Cc: H. Peter Anvin <hpa@linux.intel.com> Cc: Yuanhan Liu <yuanhan.liu@intel.com> Cc: Fenghua Yu <fenghua.yu@intel.com> Signed-off-by: Gayatri Kammela <gayatri.kammela@intel.com> Signed-off-by: Shaohua Li <shli@fb.com>
2016-09-30 11:14:49 -07:00
lib/raid6: Add AVX2 optimized gen_syndrome functions Add AVX2 optimized gen_syndrom functions, which is simply based on sse2.c written by hpa. Signed-off-by: Yuanhan Liu <yuanhan.liu@linux.intel.com> Reviewed-by: H. Peter Anvin <hpa@zytor.com> Signed-off-by: Jim Kukunas <james.t.kukunas@linux.intel.com> Signed-off-by: NeilBrown <neilb@suse.de>
2012-11-30 13:10:39 -08:00
lib/raid6: Add AVX2 optimized xor_syndrome functions Implement the AVX2 optimization of RAID6 xor_syndrome functions which is simply based on sse2.c written by hpa. Cc: H. Peter Anvin <hpa@linux.intel.com> Cc: Yuanhan Liu <yuanhan.liu@intel.com> Cc: Fenghua Yu <fenghua.yu@intel.com> Signed-off-by: Gayatri Kammela <gayatri.kammela@intel.com> Signed-off-by: Shaohua Li <shli@fb.com>
2016-09-30 11:14:49 -07:00
lib/raid6: Add AVX2 optimized gen_syndrome functions Add AVX2 optimized gen_syndrom functions, which is simply based on sse2.c written by hpa. Signed-off-by: Yuanhan Liu <yuanhan.liu@linux.intel.com> Reviewed-by: H. Peter Anvin <hpa@zytor.com> Signed-off-by: Jim Kukunas <james.t.kukunas@linux.intel.com> Signed-off-by: NeilBrown <neilb@suse.de>
2012-11-30 13:10:39 -08:00
lib/raid6: Use strict priority ranking for pq gen() benchmarking On x86_64, currently 3 variants of AVX512, 3 variants of AVX2 and 3 variants of SSE2 are benchmarked on initialization, taking between 144-153 jiffies. Testing across a hardware pool of various generations of intel cpus I could not find a single case where SSE2 won over AVX2 or AVX512. There are cases where AVX2 wins over AVX512 however. Change "prefer" into an integer priority field (similar to how recov selection works) to have more than one ranking level available, which is backwards compatible with existing behavior. Give AVX2/512 variants higher priority over SSE2 in order to skip SSE testing when AVX is available. in a AVX2/x86_64/HZ=250 case this saves in the order of 200ms of initialization time. Signed-off-by: Dirk Müller <dmueller@suse.de> Acked-by: Paul Menzel <pmenzel@molgen.mpg.de> Signed-off-by: Song Liu <song@kernel.org>
2022-01-05 17:38:47 +01:00
lib/raid6: Add AVX2 optimized gen_syndrome functions Add AVX2 optimized gen_syndrom functions, which is simply based on sse2.c written by hpa. Signed-off-by: Yuanhan Liu <yuanhan.liu@linux.intel.com> Reviewed-by: H. Peter Anvin <hpa@zytor.com> Signed-off-by: Jim Kukunas <james.t.kukunas@linux.intel.com> Signed-off-by: NeilBrown <neilb@suse.de>
2012-11-30 13:10:39 -08:00
lib/raid6: Use strict priority ranking for pq gen() benchmarking On x86_64, currently 3 variants of AVX512, 3 variants of AVX2 and 3 variants of SSE2 are benchmarked on initialization, taking between 144-153 jiffies. Testing across a hardware pool of various generations of intel cpus I could not find a single case where SSE2 won over AVX2 or AVX512. There are cases where AVX2 wins over AVX512 however. Change "prefer" into an integer priority field (similar to how recov selection works) to have more than one ranking level available, which is backwards compatible with existing behavior. Give AVX2/512 variants higher priority over SSE2 in order to skip SSE testing when AVX is available. in a AVX2/x86_64/HZ=250 case this saves in the order of 200ms of initialization time. Signed-off-by: Dirk Müller <dmueller@suse.de> Acked-by: Paul Menzel <pmenzel@molgen.mpg.de> Signed-off-by: Song Liu <song@kernel.org>
2022-01-05 17:38:47 +01:00