Re: [patch] trace: Add user-space event tracing/injection

[Darren Hart]

On 11/18/2010 12:55 AM, Ingo Molnar wrote:
> * Darren Hart<dvhart@xxxxxxxxxxxxxxx>  wrote:
>
> > Ideally I would like to see something just like trace_printf()
> > without having to define it myself in each of my testcases. [...]
>
> We can make the prctl a single-argument thing, at the cost of not allowing \0 in the
> content. (which is probably sane anyway)
>
> That way deployment is super-simple:
>
> 	prctl(35, "My Trace Message");
> 	...
>
>
> 	if (asprintf(&msg, "My Trace Message: %d\n", 1234) != -1) {
> 		prctl(35, *msg);
> 		free(*msg);
> 	}


I think that would be ideal.

--
Darren Hart
Yocto Linux Kernel
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