#ifndef _BITS_PROFILE_H #define _BITS_PROFILE_H /** @file * * Profiling * */ FILE_LICENCE ( GPL2_OR_LATER_OR_UBDL ); #include /** * Get profiling timestamp * * @ret timestamp Timestamp */ static inline __attribute__ (( always_inline )) uint64_t profile_timestamp ( void ) { uint64_t cycles; /* Read cycle counter */ __asm__ __volatile__ ( "msr PMCR_EL0, %1\n\t" "mrs %0, PMCCNTR_EL0\n\t" : "=r" ( cycles ) : "r" ( 1 ) ); return cycles; } #endif /* _BITS_PROFILE_H */