selftests/bpf/bench.c

85 grace_period_latency_basic_stats(struct bench_res res[], int res_cnt, struct basic_stats *gp_stat)
89 	memset(gp_stat, 0, sizeof(struct basic_stats));
92 		gp_stat->mean += res[i].gp_ns / 1000.0 / (double)res[i].gp_ct / (0.0 + res_cnt);
94 #define IT_MEAN_DIFF (res[i].gp_ns / 1000.0 / (double)res[i].gp_ct - gp_stat->mean)
97 			gp_stat->stddev += (IT_MEAN_DIFF * IT_MEAN_DIFF) / (res_cnt - 1.0);
99 	gp_stat->stddev = sqrt(gp_stat->stddev);
104 grace_period_ticks_basic_stats(struct bench_res res[], int res_cnt, struct basic_stats *gp_stat)
108 	memset(gp_stat, 0, sizeof(struct basic_stats));
110 		gp_stat->mean += res[i].stime / (double)res[i].gp_ct / (0.0 + res_cnt);
112 #define IT_MEAN_DIFF (res[i].stime / (double)res[i].gp_ct - gp_stat->mean)
115 			gp_stat->stddev += (IT_MEAN_DIFF * IT_MEAN_DIFF) / (res_cnt - 1.0);
117 	gp_stat->stddev = sqrt(gp_stat->stddev);