852 static void make_histogram(struct perf_ftrace *ftrace, int buckets[],  in make_histogram()  argument
929 		buckets[i]++;  in make_histogram()
941 static void display_histogram(struct perf_ftrace *ftrace, int buckets[])  in display_histogram()  argument
953 		total += buckets[i];  in display_histogram()
963 	bar_len = buckets[0] * bar_total / total;  in display_histogram()
965 	if (!ftrace->hide_empty || buckets[0])  in display_histogram()
968 		       buckets[0], bar_len, bar, bar_total - bar_len, "");  in display_histogram()
974 		if (ftrace->hide_empty && !buckets[i])  in display_histogram()
1005 		bar_len = buckets[i] * bar_total / total;  in display_histogram()
1006 		printf(" %s | %10d | %.*s%*s |\n", unit, buckets[i], bar_len, bar,  in display_histogram()
1010 	bar_len = buckets[bucket_num - 1] * bar_total / total;  in display_histogram()
1011 	if (ftrace->hide_empty && !buckets[bucket_num - 1])  in display_histogram()
1028 	printf(" | %10d | %.*s%*s |\n", buckets[bucket_num - 1],  in display_histogram()
1107 static int read_func_latency(struct perf_ftrace *ftrace, int buckets[])  in read_func_latency()  argument
1110 		return perf_ftrace__latency_read_bpf(ftrace, buckets, &latency_stats);  in read_func_latency()
1132 	int *buckets;  in __cmd_latency()  local
1146 	buckets = calloc(ftrace->bucket_num, sizeof(*buckets));  in __cmd_latency()
1147 	if (buckets == NULL) {  in __cmd_latency()
1162 			make_histogram(ftrace, buckets, buf, n, line);  in __cmd_latency()
1179 		make_histogram(ftrace, buckets, buf, n, line);  in __cmd_latency()
1182 	read_func_latency(ftrace, buckets);  in __cmd_latency()
1184 	display_histogram(ftrace, buckets);  in __cmd_latency()
1187 	free(buckets);  in __cmd_latency()