kernel/git/stable/linux-stable.git/lib/raid6/recov.c, branch master

raid6: move to lib/raid/

2026-05-29T04:24:53+00:00

Move the raid6 code to live in lib/raid/ with the XOR code, and change the internal organization so that each architecture has a subdirectory similar to the CRC, crypto and XOR libraries, and fix up the Makefile to only build files actually needed. Also move the kunit test case from the history test/ subdirectory to tests/ and use the normal naming scheme for it. Link: https://lore.kernel.org/20260518051804.462141-4-hch@lst.de Signed-off-by: Christoph Hellwig Acked-by: Ard Biesheuvel Tested-by: Ard Biesheuvel # kunit only on arm64 Cc: Albert Ou Cc: Alexander Gordeev Cc: Alexandre Ghiti Cc: Arnd Bergmann Cc: "Borislav Petkov (AMD)" Cc: Catalin Marinas Cc: Chris Mason Cc: Christian Borntraeger Cc: Dan Williams Cc: David Sterba Cc: Heiko Carstens Cc: Herbert Xu Cc: "H. Peter Anvin" Cc: Huacai Chen Cc: Ingo Molnar Cc: Li Nan Cc: Madhavan Srinivasan Cc: Michael Ellerman Cc: Nicholas Piggin Cc: Palmer Dabbelt Cc: Song Liu Cc: Sven Schnelle Cc: Vasily Gorbik Cc: WANG Xuerui Cc: Will Deacon Signed-off-by: Andrew Morton

raid6: turn the userspace test harness into a kunit test

2026-05-29T04:24:52+00:00

Patch series "cleanup the RAID6 P/Q library", v3. This series cleans up the RAID6 P/Q library to match the recent updates to the RAID 5 XOR library and other CRC/crypto libraries. This includes providing properly documented external interfaces, hiding the internals, using static_call instead of indirect calls and turning the user space test suite into an in-kernel kunit test which is also extended to improve coverage. Note that this changes registration so that non-priority algorithms are not registered, which greatly helps with the benchmark time at boot time. I'd like to encourage all architecture maintainers to see if they can further optimized this by registering as few as possible algorithms when there is a clear benefit in optimized or more unrolled implementations. This patch (of 18): Currently the raid6 code can be compiled as userspace code to run the test suite. Convert that to be a kunit case with minimal changes to avoid mutating global state so that we can drop this requirement. Note that this is not a good kunit test case yet and will need a lot more work, but that is deferred until the raid6 code is moved to it's new place, which is easier if the userspace makefile doesn't need adjustments for the new location first. Link: https://lore.kernel.org/20260518051804.462141-1-hch@lst.de Link: https://lore.kernel.org/20260518051804.462141-2-hch@lst.de Signed-off-by: Christoph Hellwig Acked-by: Ard Biesheuvel Tested-by: Ard Biesheuvel # kunit only on arm64 Cc: Albert Ou Cc: Alexander Gordeev Cc: Alexandre Ghiti Cc: Arnd Bergmann Cc: "Borislav Petkov (AMD)" Cc: Catalin Marinas Cc: Chris Mason Cc: Christian Borntraeger Cc: Dan Williams Cc: David Sterba Cc: Heiko Carstens Cc: Herbert Xu Cc: "H. Peter Anvin" Cc: Huacai Chen Cc: Ingo Molnar Cc: Li Nan Cc: Madhavan Srinivasan Cc: Michael Ellerman Cc: Nicholas Piggin Cc: Palmer Dabbelt Cc: Song Liu Cc: Sven Schnelle Cc: Vasily Gorbik Cc: WANG Xuerui Cc: Will Deacon Signed-off-by: Andrew Morton

lib/raid6: replace custom zero page with ZERO_PAGE

2025-07-10T05:57:54+00:00

Use the system-wide zero page instead of a custom zero page. [herbert@gondor.apana.org.au: update lib/raid6/recov_rvv.c, per Klara] Link: https://lkml.kernel.org/r/aFkUnXWtxcgOTVkw@gondor.apana.org.au Link: https://lkml.kernel.org/r/Z9flJNkWQICx0PXk@gondor.apana.org.au Signed-off-by: Herbert Xu Cc: Song Liu Cc: Yu Kuai Cc: Klara Modin Signed-off-by: Andrew Morton

raid6: remove the include from recov.c

2023-08-15T16:40:27+00:00

There is no exported symbol left in recov.c, so the include is now unnecessary, and breaks the raid6test build. Remove it. Signed-off-by: WANG Xuerui Link: https://lore.kernel.org/r/20230731104911.411964-2-kernel@xen0n.name Signed-off-by: Song Liu

treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 48

2019-05-24T15:27:13+00:00

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 Reviewed-by: Allison Randal Reviewed-by: Kate Stewart Cc: linux-spdx@vger.kernel.org Link: https://lkml.kernel.org/r/20190520170858.645641371@linutronix.de Signed-off-by: Greg Kroah-Hartman

lib/raid6: fix sparse warnings in recovery functions

2012-05-28T04:10:22+00:00

Make the recovery functions static to fix the following sparse warnings: lib/raid6/recov.c:25:6: warning: symbol 'raid6_2data_recov_intx1' was not declared. Should it be static? lib/raid6/recov.c:69:6: warning: symbol 'raid6_datap_recov_intx1' was not declared. Should it be static? lib/raid6/recov_ssse3.c:22:6: warning: symbol 'raid6_2data_recov_ssse3' was not declared. Should it be static? lib/raid6/recov_ssse3.c:197:6: warning: symbol 'raid6_datap_recov_ssse3' was not declared. Should it be static? Reported-by: Fengguang Wu Signed-off-by: Jim Kukunas Signed-off-by: NeilBrown

lib/raid6: Add SSSE3 optimized recovery functions

2012-05-22T03:54:18+00:00

Add SSSE3 optimized recovery functions, as well as a system for selecting the most appropriate recovery functions to use. Originally-by: H. Peter Anvin Signed-off-by: Jim Kukunas Signed-off-by: NeilBrown

md: Add in export.h for files using EXPORT_SYMBOL

2011-10-31T23:31:19+00:00

These files were getting the defines for EXPORT_SYMBOL because device.h was including module.h. But we are going to put an end to that. So add the proper export.h include now. Signed-off-by: Paul Gortmaker

Further tidyup of raid6 naming in lib/raid6

2010-08-11T20:44:54+00:00

Rename raid6/raid6x86.h to raid6/x86.h and modify some comments. Signed-off-by: NeilBrown

Rename raid6 files now they're in a 'raid6' directory.

2010-08-10T23:19:05+00:00

Linus asks 'why "raid6" twice?'. No reason. Signed-off-by: David Woodhouse