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
signature.asc
Description: PGP signature
