detailed Warning informatoin output

[Mao, Bibo]

Hi, 
Sometimes when system is heavy load or there are many trace points,
there will be some WARNING information like this:
	WARNING: Number of errors: 0, skipped probes: 2141
And I do know whether the WARNING information can be formatted output
more detailed. For example, for skipped probes, for kprobe, kprobe trace
point is printed; and for kretprobe, kretprobe trace point and function
name is printed. And sometime it is benefit for us to analyze
kprobe/kretprobe.

Regards
Bibo,mao