linux-kernel - Re: [PATCH 0/2] ftrace: fixes for PPC

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Date:	Sat, 6 Sep 2008 14:03:47 +0200
From:	Ingo Molnar <mingo@...e.hu>
To:	Steven Rostedt <rostedt@...dmis.org>
Cc:	linux-kernel@...r.kernel.org, Thomas Gleixner <tglx@...utronix.de>,
	Peter Zijlstra <peterz@...radead.org>,
	Andrew Morton <akpm@...ux-foundation.org>,
	David Miller <davem@...emloft.net>,
	Benjamin Herrenschmidt <benh@...nel.crashing.org>,
	linuxppc-dev@...abs.org
Subject: Re: [PATCH 0/2] ftrace: fixes for PPC


* Steven Rostedt <rostedt@...dmis.org> wrote:

> I spent the day chasing a bug that would hang PPC on boot up when 
> ftrace is configured in. I found that it was simply a stupid bug I did 
> to handle the non MCOUNT_RECORD case. Since I was testing only on x86, 
> and the MCOUNT_RECORD is automatically set for dynamic ftrace if it is 
> available, I did not test the case where MCOUNT_RECORD was not set.
> 
> I have not finished porting MCOUNT_RECORD to PPC, but have found that 
> it has caused some issues for archs that do not support it yet.
> 
> This patch series handles these cases.

applied to tip/tracing/ftrace, thanks Steve.

	Ingo
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