[PATCH v1 0/5] arm64: Add optimized memset/memcpy functions

[Tom Rini]

On Fri, Aug 06, 2021 at 03:38:38PM +0200, Stefan Roese wrote:

> 
> On an NXP LX2160 based platform it has been noticed, that the currently
> implemented memset/memcpy functions for aarch64 are suboptimal.
> Especially the memset() for clearing the NXP MC firmware memory is very
> expensive (time-wise).
> 
> By using optimized functions, a speedup of ~ factor 6 has been measured.
> 
> This patchset now adds the optimized functions ported from this
> repository:
> https://github.com/ARM-software/optimized-routines
> 
> As these functions make use of opcodes that need the caches to be
> enabled, they can't be used in the very early boot stage, before the
> caches are enabled. Because of this, a simple memset() version is also
> added, in this case memset_simple(), and will be used in very few
> selected places.
> 
> Please note that checkpatch.pl complains about some issue with this
> imported file: arch/arm/lib/asmdefs.h
> Since it's imported I did explicitly not make any changes here, to make
> potential future sync'ing easer.

Traditionally, we grab the linux kernel's optimized functions.  Are
there not a set to grab there?

-- 
Tom
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