NSEC_PER_CCOUNT    44 include/asm-xtensa/timex.h #define NSEC_PER_CCOUNT  ccount_nsec
NSEC_PER_CCOUNT    47 include/asm-xtensa/timex.h #define NSEC_PER_CCOUNT (1000UL / CONFIG_XTENSA_CPU_CLOCK)