Signed-off-by: Jens Axboe <axboe@fb.com>
- return __hash_u64(sum) % gs->nranges;
return sum % gs->nranges;
}
return sum % gs->nranges;
}
else
val = 1 + (unsigned long long)(n * pow(eta*rand_uni - eta + 1.0, alpha));
else
val = 1 + (unsigned long long)(n * pow(eta*rand_uni - eta + 1.0, alpha));
- return (__hash_u64(val - 1) + zs->rand_off) % zs->nranges;
- return (val - 1 + zs->rand_off) % zs->nranges;
+ return (val + zs->rand_off) % zs->nranges;
}
void pareto_init(struct zipf_state *zs, unsigned long nranges, double h,
}
void pareto_init(struct zipf_state *zs, unsigned long nranges, double h,
unsigned long long pareto_next(struct zipf_state *zs)
{
double rand = (double) __rand(&zs->rand) / (double) FRAND32_MAX;
unsigned long long pareto_next(struct zipf_state *zs)
{
double rand = (double) __rand(&zs->rand) / (double) FRAND32_MAX;
- unsigned long long n = zs->nranges - 1;
+ unsigned long long n;
+
+ n = (zs->nranges - 1) * pow(rand, zs->pareto_pow);
- return (__hash_u64(n * pow(rand, zs->pareto_pow)) + zs->rand_off) % zs->nranges;
- return (unsigned long long) (n * pow(rand, zs->pareto_pow) + zs->rand_off) % zs->nranges;
+ return (n + zs->rand_off) % zs->nranges;
}
void zipf_disable_hash(struct zipf_state *zs)
}
void zipf_disable_hash(struct zipf_state *zs)