diff options
Diffstat (limited to 'src/arch/loong64/include/bits/profile.h')
-rw-r--r-- | src/arch/loong64/include/bits/profile.h | 28 |
1 files changed, 28 insertions, 0 deletions
diff --git a/src/arch/loong64/include/bits/profile.h b/src/arch/loong64/include/bits/profile.h new file mode 100644 index 0000000..9f597ce --- /dev/null +++ b/src/arch/loong64/include/bits/profile.h @@ -0,0 +1,28 @@ +#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__ ( "rdtime.d %0, $zero\n\t" : "=r" ( cycles ) ); + return cycles; +} + +#endif /* _BITS_PROFILE_H */ |