Re: lib/raid6: SSSE3 optimized recovery functions v2

From: NeilBrown
Date: Thu Apr 12 2012 - 02:18:11 EST


On Wed, 11 Apr 2012 12:40:27 -0700 Jim Kukunas
<james.t.kukunas@xxxxxxxxxxxxxxx> wrote:

> Hi Folks,
>
> The following patchset adds SSSE3 optimized recovery
> functions to RAID6.
>
> This version differs from version 1, in that:
> 0) cpu_has_ssse3 is moved to within the #ifdef block
> 1) the functions are moved into their own file, recov_ssse3.c
> 2) a superfluous memory load is removed from raid6_2data_recov_ssse3
>
> A technical description of the algorithm can be found
> at http://www.kernel.org/pub/linux/kernel/people/hpa/raid6.pdf
>
> Thanks.
>


Thanks.

Could I trouble you to run 'checkpatch.pl' and fix up some of the more
reasonable complaints?

ERROR: open brace '{' following function declarations go on the next line
#243: FILE: lib/raid6/recov_ssse3.c:28:
+ static const u8 __attribute__((aligned(16))) x0f[16] = {

is clearly bogus, but

WARNING: __aligned(size) is preferred over __attribute__((aligned(size)))
#243: FILE: lib/raid6/recov_ssse3.c:28:
+ static const u8 __attribute__((aligned(16))) x0f[16] = {

is probably worth considering, as are some others.

NeilBrown

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