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

From: Ingo Molnar
Date: Sat Jan 17 2009 - 17:35:32 EST



* 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?

Ingo
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