CONFIG_OPT_LIB_FUNCTION is not available for the selected architecture x86.
Result is shown for architecture microblaze
Optimized lib function
configname: CONFIG_OPT_LIB_FUNCTION
Linux Kernel Configuration
└─>Platform options
└─>Optimized lib function
In linux kernel since version 2.6.30 (release Date: 2009-06-09)
Turns on optimized library functions (memcpy and memmove).
They are optimized by using word alignment. This will work
fine if both source and destination are aligned on the same
boundary. However, if they are aligned on different boundaries
shifts will be necessary. This might result in bad performance
on MicroBlaze systems without a barrel shifter.
They are optimized by using word alignment. This will work
fine if both source and destination are aligned on the same
boundary. However, if they are aligned on different boundaries
shifts will be necessary. This might result in bad performance
on MicroBlaze systems without a barrel shifter.