I defined a trace event: trace_a(state). So, "it" is the "state". -----Original Message----- From: Steven Rostedt [mailto:rostedt@xxxxxxxxxxx] Sent: Friday, September 13, 2013 10:42 AM To: Du, Yuyang Cc: John Kacur; linux-trace-users@xxxxxxxxxxxxxxx Subject: Re: Query: is it possible to trace at exactly start and end time of tracing On Fri, 13 Sep 2013 02:31:44 +0000 "Du, Yuyang" <yuyang.du@xxxxxxxxx> wrote: > > Steve: I guess you are asking that the operation that does the "trace_on" also writes to the trace buffer saying that it did so? > > Yuyang: To be specific, not saying the tracing start, but saying "just trace it, even we didn't hit the trace point". I guess I'm stumbling over pronouns. "just trace it" what exactly is "it"? -- Steve -- To unsubscribe from this list: send the line "unsubscribe linux-trace-users" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html