linux-kernel - Re: [RFC] x86: entry_64 - introduce FTRACE

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Message-ID: <alpine.DEB.1.10.0812130956350.17344@gandalf.stny.rr.com>
Date:	Sat, 13 Dec 2008 09:59:28 -0500 (EST)
From:	Steven Rostedt <rostedt@...dmis.org>
To:	Frédéric Weisbecker <fweisbec@...il.com>
cc:	Cyrill Gorcunov <gorcunov@...il.com>,
	Steven Rostedt <srostedt@...hat.com>,
	Ingo Molnar <mingo@...e.hu>, "H. Peter Anvin" <hpa@...or.com>,
	Thomas Gleixner <tglx@...utronix.de>,
	LKML <linux-kernel@...r.kernel.org>,
	Alexander van Heukelum <heukelum@...tmail.fm>
Subject: Re: [RFC] x86: entry_64 - introduce FTRACE_ frame macro


On Sat, 13 Dec 2008, Fr?d?ric Weisbecker wrote:
> 2008/12/13 Cyrill Gorcunov <gorcunov@...il.com>:
> Hi,
> 
> Looks good and clarify the asm bits.
> 
> I wonder if the function_graph_tracer should continue to necessarily
> depend on the function tracer.
> It was more simplier to do so but perhaps that could be avoided with
> small modifications.

It could be, but remember, the dynamic ftrace gives the ability to specify 
which function can be chosen.

But on the other hand, I guess it would be fine to have it separate. There 
is no reason that it can not be. I would still keep the dynamic part 
dependent on function tracer. At least for now.

-- Steve

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