125 commits

Author	SHA1	Message	Date
Andrea Mazzoleni	c2caddc97a	Use vpternlogq in raid_gen3-6_avx512bw to fuse sequential vpxorq instructions into single 3-way XORs	2026-07-19 18:23:43 +02:00
Andrea Mazzoleni	3d2b5af198	Gate AVX-512BW gen1/gen2 behind slow_avx512() to avoid double-pumped shuffle penalties	2026-07-19 18:23:43 +02:00
Andrea Mazzoleni	9e19222090	Remove the unused number of data disks from the vector allocation ... The same addressing rules are applied to the parity disks because they are used as data disks during recovery operations.	2026-07-19 18:23:43 +02:00
Andrea Mazzoleni	eff11e4607	Inject variable page-offset noise to disk buffer displacement to mitigate prefetcher contention	2026-07-19 18:23:43 +02:00
Andrea Mazzoleni	986075e53a	Use the optimal displacement depending on the number of disks	2026-07-19 18:23:43 +02:00
Andrea Mazzoleni	2ae305fbc4	Change RAID AVX512/GFNI functions to use forward iterations	2026-07-19 18:23:43 +02:00
Andrea Mazzoleni	85b4d65308	Remove the special case of a single data disk when not strictly required	2026-07-19 18:23:43 +02:00
Andrea Mazzoleni	8c1111ea25	Remove unused level 0 from the pshufb table	2026-07-19 18:23:43 +02:00
Andrea Mazzoleni	798e19d6c4	Change the AVX512BW generation to use pshufb also for Q parity	2026-07-19 18:23:43 +02:00
Andrea Mazzoleni	0dcf3f78ed	Extend the pshufb table to include the Q parity coefficients	2026-07-19 18:23:43 +02:00
Andrea Mazzoleni	7f7bdbd925	New displacement benchmarks	2026-07-19 18:23:43 +02:00
Andrea Mazzoleni	5e89e3e0fd	Simplify GFNI implementations	2026-07-19 18:23:43 +02:00
Andrea Mazzoleni	f7d8ddb07b	Always build RAID test with USE_RAID_AES	2026-07-19 18:23:43 +02:00
Andrea Mazzoleni	7ac192deb9	Assume the assembler supports all x86 SSE/AVX instructions	2026-07-19 18:23:43 +02:00
Andrea Mazzoleni	829efe750b	Extend the RAID regression test to detect unset parity	2026-07-19 18:23:43 +02:00
Andrea Mazzoleni	ea207fdd8c	Add support for AVX2 GFNI	2026-07-19 18:23:43 +02:00
Andrea Mazzoleni	3172e42650	Disable AVX512 on CPUs with narrow shuffle ports or double-pumped 256-bit datapath	2026-07-19 18:23:43 +02:00
Andrea Mazzoleni	ef8262b567	Revise the RAID library Makefile	2026-07-19 18:23:43 +02:00
Andrea Mazzoleni	b2aa5e221e	Be more clear when GFNI is really used	2026-07-19 18:23:43 +02:00
Andrea Mazzoleni	cf9ab90769	Optimize AVX512 gen1 parity with the vpternlogq instruction	2026-07-19 18:23:43 +02:00
Andrea Mazzoleni	b99daefeed	Add tables for the AES Polynomial	2026-07-19 18:23:43 +02:00
Andrea Mazzoleni	43b15980a7	Comment about the RAID optimizations	2026-07-19 18:23:43 +02:00
Andrea Mazzoleni	9269dc962a	Use a simpler approach in the new AVX512 generation functions	2026-07-19 18:23:43 +02:00
Andrea Mazzoleni	37ff42a1c2	Preliminary support for AVX512GFNI	2026-07-19 18:23:43 +02:00
Andrea Mazzoleni	cfd1eac70c	Change commenting style	2026-07-19 18:23:43 +02:00
Andrea Mazzoleni	fd13d8e161	Add detection of AVX2GFNI	2026-07-19 18:23:43 +02:00
Andrea Mazzoleni	5d475257ba	Add more AVX512 functions for parity	2026-07-19 18:23:42 +02:00
Andrea Mazzoleni	30131b357f	Preliminary support for ADVX512	2026-07-19 18:23:42 +02:00
Christoph Hellwig	b79b00d44f	Make all RAID forwarders static and local using a new registration interface ... Co-authored-by: Andrea Mazzoleni <amadvance@gmail.com>	2026-07-19 18:23:42 +02:00
Andrea Mazzoleni	562d59d9c8	Avoid a folding VLA warning in clang	2026-07-06 15:57:49 +02:00
Andrea Mazzoleni	ae9b472898	Add detection of AVX512BW and AVX512GFNI	2026-04-16 00:13:51 +02:00
Andrea Mazzoleni	b709371d2d	Fix typos in the comment of the raid library	2026-04-15 10:53:25 +02:00
Andrea Mazzoleni	0d0431a907	Simpler Copyright string	2026-04-09 17:56:49 +02:00
Christoph Hellwig	60269a1236	Use SPDX (https://spdx.dev/) tags to identify the license used for each ... file, and a COPYING file explaining the licensing scheme, with the actual licenses listed in the LICENSES/ directory.	2026-04-02 16:01:37 +02:00
Andrea Mazzoleni	e80734fc4c	Fix typos	2026-01-22 16:13:25 +01:00
Andrea Mazzoleni	f7798b2357	Update performance test of raid.c	2025-10-14 23:26:34 +02:00
Andrea Mazzoleni	13a4872e69	Revise the top comment of raid.c	2025-10-13 17:32:55 +02:00
Andrea Mazzoleni	56c4076e23	Avoid a warning about function pointer conversion. No functional changes	2025-01-23 15:51:59 +01:00
Andrea Mazzoleni	607564c5fe	Fix some typos	2023-12-09 10:45:26 +01:00
Jens Kühnel	6b3ac2a6cb	Update address of FSF in GPLv2	2023-08-09 14:44:48 +02:00
Andrea Gelmini	2dacb15516	Fix typos ... Signed-off-by: Andrea Gelmini <andrea.gelmini@gelma.net>	2022-07-21 14:48:48 +02:00
Andrea Gelmini	986e9b4131	Fix typos	2020-05-26 12:50:15 +02:00
Andrea Mazzoleni	21241c5078	Preliminary advise support	2016-05-15 14:50:59 +02:00
Andrea Mazzoleni	9430106c71	Allow to disable inline assembly from configure ... This is required for the -fsanitize options that don't support inline assembly statements.	2016-01-09 11:19:52 +01:00
Andrea Mazzoleni	cffa2f0c10	Better Atom prediction of fastest RAID implementation	2015-11-21 09:08:53 +01:00
Andrea Mazzoleni	77117b1cd5	Add some more warning checks, and fix the ones reported	2015-08-05 09:42:11 +02:00
Andrea Mazzoleni	1c06674d1a	Some comments about x86 optimizations	2015-06-20 16:47:50 +02:00
Andrea Mazzoleni	2ae9d8d41a	Add recognition of new Atom CPUs	2015-06-04 22:38:32 +02:00
Andrea Mazzoleni	35b1b08b6c	Clean the cpu.h header	2015-03-30 23:36:36 +02:00
Andrea Mazzoleni	8a0d49b21e	Fix the selftest due missing return value	2015-03-30 22:23:23 +02:00