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- #ifndef _BITS_PROFILE_H
- #define _BITS_PROFILE_H
-
- /** @file
- *
- * Profiling
- *
- */
-
- FILE_LICENCE ( GPL2_OR_LATER_OR_UBDL );
-
- #include <stdint.h>
-
- /**
- * 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 */
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