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

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Message-ID: <20090324214846.GB29509@elte.hu>
Date:	Tue, 24 Mar 2009 22:48:46 +0100
From:	Ingo Molnar <mingo@...e.hu>
To:	Frederic Weisbecker <fweisbec@...il.com>
Cc:	Tim Bird <tim.bird@...sony.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>,
	Abhishek Sagar <sagar.abhishek@...il.com>,
	Russell King <rmk@....linux.org.uk>,
	Uwe Kleine-König 
	<u.kleine-koenig@...gutronix.de>
Subject: Re: Anyone working on ftrace function graph support on ARM?


* Frederic Weisbecker <fweisbec@...il.com> wrote:

> Well it's a very naive listing, there are sometimes some problems. 
> For example on x86-64, I had to save even some non-scratch 
> registers before calling the return hook, I still don't know why.

btw., which are those registers?

	Ingo
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