linux-kernel - Re: [BUG] long freezes on thinkpad t60

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Message-ID: <20070524144447.GA25068@elte.hu>
Date:	Thu, 24 May 2007 16:44:49 +0200
From:	Ingo Molnar <mingo@...e.hu>
To:	Miklos Szeredi <miklos@...redi.hu>
Cc:	linux-kernel@...r.kernel.org, linux-acpi@...r.kernel.org,
	tglx@...utronix.de
Subject: Re: [BUG] long freezes on thinkpad t60


* Miklos Szeredi <miklos@...redi.hu> wrote:

> >  CONFIG_EVENT_TRACE=y
> >  CONFIG_FUNCTION_TRACE=y
> >  # CONFIG_WAKEUP_TIMING is not set
> >  # CONFIG_CRITICAL_IRQSOFF_TIMING is not set
> >  CONFIG_MCOUNT=y
> > 
> > does it boot with these?
> 
> Nope.  Same segfault.  If I try to continue manually with 'init 5', 
> then init segfaults as well :(

could you just try v2.6.21 plus the -rt patch, which has the tracer 
built-in? That's a combination that should work well. You can pick it up 
from:

   http://people.redhat.com/mingo/realtime-preempt/

same config options as above. If you dont turn on PREEMPT_RT you'll get 
an almost-vanilla kernel.

	Ingo
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