104 		__s64 delta = bpf_ktime_get_ns() - *start;  in BPF_PROG()  local
105 		__u64 val = delta;  in BPF_PROG()
111 		if (delta < 0)  in BPF_PROG()
115 			val = delta / cmp_base;  in BPF_PROG()
134 		// calculate index using delta  in BPF_PROG()
136 			if (delta < (cmp_base << key))  in BPF_PROG()
147 		__sync_fetch_and_add(&total, delta); // always in nsec  in BPF_PROG()
150 		if (delta > max)  in BPF_PROG()
151 			max = delta;  in BPF_PROG()
152 		if (delta < min)  in BPF_PROG()
153 			min = delta;  in BPF_PROG()