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Subject: Re: Latency traces I cannot interpret (sa1100, 2.6.15-rc7-rt1)
From: Daniel Walker <dwalker@mvista.com>
To: Ingo Molnar <mingo@elte.hu>
Cc: Lee Revell <rlrevell@joe-job.com>, kus Kusche Klaus <kus@keba.com>,
       linux-kernel <linux-kernel@vger.kernel.org>
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On Fri, 2005-12-30 at 08:44 +0100, Ingo Molnar wrote:
> there seem to be leaked preempt counts:
> 
>   <idle>-0     0.n.1 8974us : touch_critical_timing (cpu_idle)
> 
> we should never have preemption disabled in cpu_idle(). To debug leaked 
> preemption counts, enable CONFIG_DEBUG_PREEMPT.

ARM does disable preemption in cpu_idle() . 

Daniel

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