qinwei2004 opened a new pull request, #8799:
URL: https://github.com/apache/nuttx/pull/8799
## Summary
To reduce the count of FPU context switching will result at a
performance improve with system. but it need to balance the using of FPU
instruction and register
the patch submit a base method to see performance counts for
the FPU.
Please read README.txt at chapter of FPU Support and Performance
for more information
## Impact
None
## Testing
1. qemu-armv8a(nsh/nsh_smp)
1. fvp-armv8r(nsh/nsh_smp)
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