linux-kernel - Re: [2.6.18-rc7-mm1] slow boot

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Message-ID: <p73lko2ircn.fsf@verdi.suse.de>
Date:	29 Sep 2006 18:12:56 +0200
From:	Andi Kleen <ak@...e.de>
To:	"Jan Beulich" <jbeulich@...ell.com>
Cc:	"Ingo Molnar" <mingo@...e.hu>, "Andrew Morton" <akpm@...l.org>,
	<linux-kernel@...r.kernel.org>,
	"Randy Dunlap" <rdunlap@...otime.net>, tilman@...p.cc
Subject: Re: [2.6.18-rc7-mm1] slow boot

"Jan Beulich" <jbeulich@...ell.com> writes:

> There's nothing stack trace/unwind related among the functions listed at all afaics.
> I don't know much about how profiling works, is it perhaps just missing something?

Perhaps lockdep calls them with interrupts off?
The old profiler doesn't support profiling with interrupts off.
oprofile does, but it cannot be used at early boot.

-Andi
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