linux-kernel - arch/86: AVX RAID5 xor checksumming

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Message-Id: <1334078551-6859-1-git-send-email-james.t.kukunas@linux.intel.com>
Date:	Tue, 10 Apr 2012 10:22:30 -0700
From:	Jim Kukunas <james.t.kukunas@...ux.intel.com>
To:	x86@...nel.org
Cc:	hpa@...or.com, neilb@...e.de, linux-kernel@...r.kernel.org,
	mingo@...hat.com, tglx@...utronix.de
Subject: arch/86: AVX RAID5 xor checksumming

Hi Folks,

The following patch adds an AVX implementation of the RAID5 xor checksumming
functions.

Based on xor_speed, the AVX implementation appears to be ~32% faster than the
SSE implementation on my i7 2600:

        generic_sse: 15088.000 MB/sec
	avx: 19936.000 MB/sec

Thanks.

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