[PATCH -tip -v11 11/11] tracing: Add kprobes event profiling interface

[Ananth N Mavinakayanahalli]

On Thu, Jul 09, 2009 at 04:23:27PM -0400, Masami Hiramatsu wrote:
> Add profiling interaces for each kprobes event.

...

>  /* Kprobe handler */
>  static __kprobes int kprobe_trace_func(struct kprobe *kp, struct pt_regs *regs)
>  {
> @@ -772,6 +809,8 @@ static __kprobes int kprobe_trace_func(struct kprobe *kp, struct pt_regs *regs)
>  	unsigned long irq_flags;
>  	struct ftrace_event_call *call = &tp->call;
> 
> +	tp->nhits++;
> +

If you just are looking for a count and aren't bothered about its
accuracy, this is fine. Else, handlers can run in parallel ;-)

Ananth