Re: [PATCH 0/2] ftrace: updates to tip

[Ingo Molnar]

* Ingo Molnar <mingo@xxxxxxx> wrote:

> 
> * Steven Rostedt <rostedt@xxxxxxxxxxx> wrote:
> 
> > > This would allow the creation of "surgical" one-time traces - of 
> > > events and functions one is specifically interested in.
> > 
> > This all sounds great, but it would add a lot of conditionals into a 
> > extremely hot function tracer path. [...]
> 
> Why would we need more than exactly one unlikely() condition to handle 
> all of this?

We could even do it with zero branches, burdening none of the hotpaths of 
existing functionality. Hm?

	Ingo
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