linux-kernel - Re: Anyone working on ftrace function graph support on ARM?

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Date:	Wed, 25 Mar 2009 18:05:33 +0100
From:	Uwe Kleine-König 
	<u.kleine-koenig@...gutronix.de>
To:	Tim Bird <tim.bird@...sony.com>,
	Russell King - ARM Linux <linux@....linux.org.uk>
Cc:	Frederic Weisbecker <fweisbec@...il.com>,
	Abhishek Sagar <sagar.abhishek@...il.com>,
	linux-arm-kernel <linux-arm-kernel@...ts.arm.linux.org.uk>,
	linux kernel <linux-kernel@...r.kernel.org>,
	Steven Rostedt <rostedt@...dmis.org>,
	Ingo Molnar <mingo@...hat.com>
Subject: Re: Anyone working on ftrace function graph support on ARM?

On Wed, Mar 25, 2009 at 09:34:07AM -0700, Tim Bird wrote:
> Russell King - ARM Linux wrote:
> > As pointed out in my previous mail, identifying where on the stack the
> > return address is stored is only possible for OABI with frame pointers.
> > 
> > EABI will probably be possible with the stack unwinding code, but it
> > probably won't be cheap.  The EABI unwinder is scheduled for merging
> > during the present now-open merge window.
EABI with frame pointers should work, too, shouldn't it?

Best regards
Uwe

-- 
Pengutronix e.K.                              | Uwe Kleine-König            |
Industrial Linux Solutions                    | http://www.pengutronix.de/  |
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