linux-kernel - Re: [PATCH] lib/raid6: Add AVX2 optimized recovery functions

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Message-ID: <ead47490-afc3-48f1-871f-ba421eac3dd5@email.android.com>
Date:	Fri, 09 Nov 2012 12:39:05 +0100
From:	"H. Peter Anvin" <hpa@...or.com>
To:	Paul Menzel <pm.debian@...glemail.com>,
	Jim Kukunas <james.t.kukunas@...ux.intel.com>
CC:	Linux Raid <linux-raid@...r.kernel.org>,
	Linux Kernel <linux-kernel@...r.kernel.org>,
	Neil Brown <neilb@...e.de>
Subject: Re: [PATCH] lib/raid6: Add AVX2 optimized recovery functions

Sorry, we cannot share those at this time since the hardwarenis not yet released.

Paul Menzel <pm.debian@...glemail.com> wrote:

>Dear Jim,
>
>
>Am Donnerstag, den 08.11.2012, 13:47 -0800 schrieb Jim Kukunas:
>> Optimize RAID6 recovery functions to take advantage of
>> the 256-bit YMM integer instructions introduced in AVX2.
>
>in my experiencing optimizations always have to be back up by
>benchmarks. Could you add those to the commit message please.
>
>> Signed-off-by: Jim Kukunas <james.t.kukunas@...ux.intel.com>
>
>[…]
>
>
>Thanks,
>
>Paul

-- 
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