linux-kernel - [Questions] How to run 'perf top' on ARM to profile kernel functions with modules loaded

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Date:	Thu, 11 Nov 2010 14:56:24 +0800
From:	Ming Lei <tom.leiming@...il.com>
To:	Peter Zijlstra <a.p.zijlstra@...llo.nl>,
	Paul Mackerras <paulus@...ba.org>, Ingo Molnar <mingo@...e.hu>,
	Arnaldo Carvalho de Melo <acme@...hat.com>,
	Russell King <linux@....linux.org.uk>
Cc:	linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: [Questions] How to run 'perf top' on ARM to profile kernel functions
 with modules loaded

Hi,

'perf top' can't display any functions when modules are loaded on ARM.

But if all modules are unloaded, everything is OK and kernel functions can be
displayed.

So how can I make 'perf top' to profile kernel functions when modules are loaded
on ARM?

thanks,
-- 
Lei Ming
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