AW: [PATCH 0/4] Add AVX512 optimized gen_syndrome and recovery functions

From	Markus Stockhausen <stockhausen@collogia.de>
Newsgroups	linux.kernel
Subject	AW: [PATCH 0/4] Add AVX512 optimized gen_syndrome and recovery functions
Date	2016-08-03 08:10 +0200
Message-ID	<s1Xxo-6Z4-5@gated-at.bofh.it> (permalink)
References	<s1RrX-2SO-5@gated-at.bofh.it>
Organization	linux.* mail to news gateway

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> Von: linux-raid-owner@vger.kernel.org [linux-raid-owner@vger.kernel.org]&quot; im Auftrag von &quot;Gayatri Kammela [gayatri.kammela@intel.com]
> Gesendet: Mittwoch, 3. August 2016 01:28
> An: linux-raid@vger.kernel.org
> Cc: shli@kernel.org; linux-kernel@vger.kernel.org; hpa@zytor.com; james.t.kukunas@linux.intel.com; fenghua.yu@intel.com; megha.dey@linux.intel.com; ravi.v.shankar@intel.com; Gayatri Kammela
> Betreff: [PATCH 0/4] Add AVX512 optimized gen_syndrome and recovery functions
> 
> This is the patch set for adding AVX512 optimized gen_syndrome
> and recovery functions.
> 
> Optimization of RAID6 using AVX512 instructions should improve the
> RAID6 performance.These patches are tested and observed the improvement
> in performance.

Hi Gayatri,

as you already implemented the gen_syndrome() functions it should be a piece
of cake to add the xor_syndrome() ones. Only if these are implemented we can
make use of Read-Modify-Write operations if the kernel chooses an processor 
optimized algorithm. They are already in the SSE2 path but are still missing from 
the current AVX2 implementation.

More infos here:

https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=fe5cbc6e06c7d8b3a86f6f5491d74766bb5c2827
https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=a582564b24bec0443b5c5ff43ee6d1258f8bd658
https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=0e833e697bcf4c2f3f7fb9fce39d08cd4439e5d7

It would give the final touch to the patches.

Best regards.

Markus

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[PATCH 0/4] Add AVX512 optimized gen_syndrome and recovery functions Gayatri Kammela <gayatri.kammela@intel.com> - 2016-08-03 01:40 +0200
  AW: [PATCH 0/4] Add AVX512 optimized gen_syndrome and recovery  functions Markus Stockhausen <stockhausen@collogia.de> - 2016-08-03 08:10 +0200

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