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Message-ID: <20090117223451.GA27065@elte.hu>
Date: Sat, 17 Jan 2009 23:34:51 +0100
From: Ingo Molnar <mingo@...e.hu>
To: Steven Rostedt <rostedt@...dmis.org>
Cc: linux-kernel@...r.kernel.org,
Andrew Morton <akpm@...ux-foundation.org>,
Frederic Weisbecker <fweisbec@...il.com>,
Chris Mason <chris.mason@...cle.com>
Subject: Re: [PATCH 0/2] ftrace: updates to tip
* Steven Rostedt <rostedt@...dmis.org> 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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