linux-kernel - Re: [PATCH 6/6] ARM: ftrace: enable function graph tracer

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Date:	Tue, 09 Nov 2010 14:22:53 +0000
From:	Catalin Marinas <catalin.marinas@....com>
To:	Rabin Vincent <rabin@....in>
Cc:	Uwe Kleine-König 
	<u.kleine-koenig@...gutronix.de>,
	Frederic Weisbecker <fweisbec@...il.com>,
	linux-kernel@...r.kernel.org, Steven Rostedt <rostedt@...dmis.org>,
	linux-arm-kernel@...ts.infradead.org,
	Tim Bird <tim.bird@...sony.com>
Subject: Re: [PATCH 6/6] ARM: ftrace: enable function graph tracer

On Tue, 2010-11-09 at 13:46 +0000, Rabin Vincent wrote:
> Subject: [PATCHv2] ARM: ftrace: enable function graph tracer
> 
> Add the options to enable the function graph tracer on ARM.  Function
> graph tracer support requires frame pointers, so exclude Thumb-2 and
> also make sure FRAME_POINTER gets enabled when FUNCTION_GRAPH_TRACER is
> used, since FUNCTION_TRACER doesn't "select FRAME_POINTER" when
> ARM_UNWIND is used.  Therefore, with GCC 4.4.0+, you get plain function
> tracing without frame pointers, but you'll need them if you want
> function graph tracing.
> 
> Signed-off-by: Rabin Vincent <rabin@....in>

Looks ok to me.

Acked-by: Catalin Marinas <catalin.marinas@....com>

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