08 Apr, 2020

1 commit

• e6abef610   x86: update AS_* macros to binutils >=2.23, supporting ADX and AVX2 ... Browse Code »

  Now that the kernel specifies binutils 2.23 as the minimum version, we
  can remove ifdefs for AVX2 and ADX throughout.

  Signed-off-by: Jason A. Donenfeld
  Acked-by: Ingo Molnar
  Reviewed-by: Nick Desaulniers
  Signed-off-by: Masahiro Yamada

  Jason A. Donenfeld

  2020-04-08 23:12:48 +0800  

24 May, 2019

1 commit

• dd165a658   treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 48 ... Browse Code »

  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

  Thomas Gleixner

  2019-05-24 23:27:13 +0800  

08 Nov, 2016

1 commit

• b9bf33a8b   lib/raid6: Add AVX2 optimized xor_syndrome functions ... Browse Code »

  Implement the AVX2 optimization of RAID6 xor_syndrome functions which is
  simply based on sse2.c written by hpa.

  Cc: H. Peter Anvin
  Cc: Yuanhan Liu
  Cc: Fenghua Yu
  Signed-off-by: Gayatri Kammela
  Signed-off-by: Shaohua Li

  Gayatri Kammela

  2016-11-08 07:08:20 +0800  

22 Apr, 2015

1 commit

• fe5cbc6e0   md/raid6 algorithms: delta syndrome functions ... Browse Code »

  v3: s-o-b comment, explanation of performance and descision for
  the start/stop implementation

  Implementing rmw functionality for RAID6 requires optimized syndrome
  calculation. Up to now we can only generate a complete syndrome. The
  target P/Q pages are always overwritten. With this patch we provide
  a framework for inplace P/Q modification. In the first place simply
  fill those functions with NULL values.

  xor_syndrome() has two additional parameters: start & stop. These
  will indicate the first and last page that are changing during a
  rmw run. That makes it possible to avoid several unneccessary loops
  and speed up calculation. The caller needs to implement the following
  logic to make the functions work.

  1) xor_syndrome(disks, start, stop, ...): "Remove" all data of source
  blocks inside P/Q between (and including) start and end.

  2) modify any block with start
  Signed-off-by: NeilBrown

  Markus Stockhausen

  2015-04-22 06:00:41 +0800  

13 Dec, 2012

1 commit

• 2c935842b   lib/raid6: Add AVX2 optimized gen_syndrome functions ... Browse Code »

  Add AVX2 optimized gen_syndrom functions, which is simply based on
  sse2.c written by hpa.

  Signed-off-by: Yuanhan Liu
  Reviewed-by: H. Peter Anvin
  Signed-off-by: Jim Kukunas
  Signed-off-by: NeilBrown

  Yuanhan Liu

  2012-12-13 16:51:03 +0800