* Re: arch/86: AVX RAID5 xor checksumming
[not found] <1334078551-6859-1-git-send-email-james.t.kukunas@linux.intel.com>
@ 2012-04-10 17:37 ` H. Peter Anvin
2012-04-10 20:14 ` NeilBrown
0 siblings, 1 reply; 4+ messages in thread
From: H. Peter Anvin @ 2012-04-10 17:37 UTC (permalink / raw)
To: Jim Kukunas; +Cc: x86, neilb, linux-kernel, mingo, tglx, linux-raid
On 04/10/2012 10:22 AM, Jim Kukunas wrote:
> 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.
>
I think this (and the SSSE3 patches for RAID-6) should go in via the
RAID tree. Neil, do you agree?
However,
Acked-by: H. Peter Anvin <hpa@zytor.com>
-hpa
^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: arch/86: AVX RAID5 xor checksumming
2012-04-10 17:37 ` arch/86: AVX RAID5 xor checksumming H. Peter Anvin
@ 2012-04-10 20:14 ` NeilBrown
2012-04-10 21:20 ` H. Peter Anvin
0 siblings, 1 reply; 4+ messages in thread
From: NeilBrown @ 2012-04-10 20:14 UTC (permalink / raw)
To: H. Peter Anvin; +Cc: Jim Kukunas, x86, linux-kernel, mingo, tglx, linux-raid
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On Tue, 10 Apr 2012 10:37:00 -0700 "H. Peter Anvin" <hpa@zytor.com> wrote:
> On 04/10/2012 10:22 AM, Jim Kukunas wrote:
> > 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.
> >
>
> I think this (and the SSSE3 patches for RAID-6) should go in via the
> RAID tree. Neil, do you agree?
I'm happy to take the SSSE3 RAID-6 patches as they only affect lib/raid6, but
I felt that this one - being purely in arch/x86 - should probably go via the
x86 tree.
However I'm flexible and if you (collectively) are happy with these patches
going in through my tree, I'll do that.
Thanks,
NeilBrown
>
> However,
>
> Acked-by: H. Peter Anvin <hpa@zytor.com>
>
> -hpa
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^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: arch/86: AVX RAID5 xor checksumming
2012-04-10 20:14 ` NeilBrown
@ 2012-04-10 21:20 ` H. Peter Anvin
2012-04-14 12:02 ` Ingo Molnar
0 siblings, 1 reply; 4+ messages in thread
From: H. Peter Anvin @ 2012-04-10 21:20 UTC (permalink / raw)
To: NeilBrown; +Cc: Jim Kukunas, x86, linux-kernel, mingo, tglx, linux-raid
On 04/10/2012 01:14 PM, NeilBrown wrote:
>>
>> I think this (and the SSSE3 patches for RAID-6) should go in via the
>> RAID tree. Neil, do you agree?
>
> I'm happy to take the SSSE3 RAID-6 patches as they only affect lib/raid6, but
> I felt that this one - being purely in arch/x86 - should probably go via the
> x86 tree.
> However I'm flexible and if you (collectively) are happy with these patches
> going in through my tree, I'll do that.
>
Go ahead and take them with my Acked-by: -- I think that's easier.
-hpa
^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: arch/86: AVX RAID5 xor checksumming
2012-04-10 21:20 ` H. Peter Anvin
@ 2012-04-14 12:02 ` Ingo Molnar
0 siblings, 0 replies; 4+ messages in thread
From: Ingo Molnar @ 2012-04-14 12:02 UTC (permalink / raw)
To: H. Peter Anvin
Cc: NeilBrown, Jim Kukunas, x86, linux-kernel, mingo, tglx,
linux-raid
* H. Peter Anvin <hpa@zytor.com> wrote:
> On 04/10/2012 01:14 PM, NeilBrown wrote:
> >>
> >> I think this (and the SSSE3 patches for RAID-6) should go in via the
> >> RAID tree. Neil, do you agree?
> >
> > I'm happy to take the SSSE3 RAID-6 patches as they only affect lib/raid6, but
> > I felt that this one - being purely in arch/x86 - should probably go via the
> > x86 tree.
> > However I'm flexible and if you (collectively) are happy with these patches
> > going in through my tree, I'll do that.
> >
>
> Go ahead and take them with my Acked-by: -- I think that's easier.
Yeah - and x86/include/asm/xor*.h should probably be renamed
raid_xor*.h or so, to make this really obvious to do in the
future.
Thanks,
Ingo
^ permalink raw reply [flat|nested] 4+ messages in thread
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[not found] <1334078551-6859-1-git-send-email-james.t.kukunas@linux.intel.com>
2012-04-10 17:37 ` arch/86: AVX RAID5 xor checksumming H. Peter Anvin
2012-04-10 20:14 ` NeilBrown
2012-04-10 21:20 ` H. Peter Anvin
2012-04-14 12:02 ` Ingo Molnar
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