| #ifndef FIO_LFSR_H | |
| #define FIO_LFSR_H | |
| #include <inttypes.h> | |
| #define FIO_MAX_TAPS 8 | |
| struct lfsr_taps { | |
| unsigned int length; | |
| unsigned int taps[FIO_MAX_TAPS]; | |
| }; | |
| struct fio_lfsr { | |
| uint64_t last_val; | |
| uint64_t max_val; | |
| uint64_t num_vals; | |
| struct lfsr_taps taps; | |
| }; | |
| int lfsr_next(struct fio_lfsr *fl, uint64_t *off, uint64_t); | |
| int lfsr_init(struct fio_lfsr *fl, uint64_t size, unsigned long seed); | |
| void lfsr_reset(struct fio_lfsr *fl, unsigned long seed); | |
| #endif |