kernel/linux.git/lib/raid6/mktables.c, branch v6.6.131

raid6: guard the tables.c include of with KERNEL

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

The export directives for the tables are already emitted with __KERNEL__ guards, but the include is not, causing errors when building the raid6test program. Guard this include too to fix the raid6test build. Signed-off-by: WANG Xuerui Link: https://lore.kernel.org/r/20230731104911.411964-3-kernel@xen0n.name Signed-off-by: Song Liu

raid6/test: fix a compilation warning

2020-01-13T19:44:09+00:00

The compilation warning is redefination showed as following: In file included from tables.c:2: ../../../include/linux/export.h:180: warning: "EXPORT_SYMBOL" redefined #define EXPORT_SYMBOL(sym) __EXPORT_SYMBOL(sym, "") In file included from tables.c:1: ../../../include/linux/raid/pq.h:61: note: this is the location of the previous definition #define EXPORT_SYMBOL(sym) Fixes: 69a94abb82ee ("export.h, genksyms: do not make genksyms calculate CRC of trimmed symbols") Signed-off-by: Zhengyuan Liu Signed-off-by: Song Liu

treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 83

2019-05-24T15:37:52+00:00

Based on 1 normalized pattern(s): this file is part of the linux kernel and is made available under the terms of the gnu general public license version 2 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 18 file(s). Signed-off-by: Thomas Gleixner Reviewed-by: Richard Fontana Reviewed-by: Allison Randal Reviewed-by: Armijn Hemel Reviewed-by: Kate Stewart Cc: linux-spdx@vger.kernel.org Link: https://lkml.kernel.org/r/20190520075211.321157221@linutronix.de Signed-off-by: Greg Kroah-Hartman

lib/raid6: Add log-of-2 table for RAID6 HW requiring disk position

2017-05-16T04:31:57+00:00

The raid6_gfexp table represents {2}^n values for 0 <= n < 256. The Linux async_tx framework pass values from raid6_gfexp as coefficients for each source to prep_dma_pq() callback of DMA channel with PQ capability. This creates problem for RAID6 offload engines (such as Broadcom SBA) which take disk position (i.e. log of {2}) instead of multiplicative cofficients from raid6_gfexp table. This patch adds raid6_gflog table having log-of-2 value for any given x such that 0 <= x < 256. For any given disk coefficient x, the corresponding disk position is given by raid6_gflog[x]. The RAID6 offload engine driver can use this newly added raid6_gflog table to get disk position from multiplicative coefficient. Signed-off-by: Anup Patel Reviewed-by: Scott Branden Reviewed-by: Ray Jui Acked-by: Shaohua Li Signed-off-by: Vinod Koul

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

md: Factor out RAID6 algorithms into lib/

2009-10-29T14:38:47+00:00

We'll want to use these in btrfs too. Signed-off-by: David Woodhouse