From mboxrd@z Thu Jan  1 00:00:00 1970
From: Daniel Walker <dwalker@mvista.com>
Subject: Re: CONFIG_CRITICAL_IRQSOFF_TIMING
Date: Tue, 30 Oct 2007 13:56:47 -0700
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To: gerritbinnenmars@wanadoo.nl
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On Tue, 2007-10-30 at 21:52 +0100, Gerrit Binnenmars wrote:

> CONFIG_LTT_PROBE_LOCKING=m
> # CONFIG_LTT_PROBE_STACK is not set

I wonder which kernel your using? I don't recall LTT being part of real
time in the past .. What the architecture too ?

> CONFIG_CRITICAL_IRQSOFF_TIMING=y
> CONFIG_INTERRUPT_OFF_HIST=y
> CONFIG_CRITICAL_TIMING=y
> CONFIG_DEBUG_TRACE_IRQFLAGS=y
> CONFIG_LATENCY_TIMING=y

You might try disabling the histogram option temporarily, it may have be
effecting things (not sure how tho) ..

Daniel