linux-kernel - Re: scheduling anomaly on uml (was: -rt doesn't compile for UML)

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Message-ID: <20071129192635.GE5238@elte.hu>
Date:	Thu, 29 Nov 2007 20:26:35 +0100
From:	Ingo Molnar <mingo@...e.hu>
To:	Miklos Szeredi <miklos@...redi.hu>
Cc:	jdike@...toit.com, user-mode-linux-devel@...ts.sourceforge.net,
	linux-kernel@...r.kernel.org
Subject: Re: scheduling anomaly on uml (was: -rt doesn't compile for UML)


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

> > heh :-) Scheduling isnt hard either - and looking at traces 
> > (especially with mcount_enabled=1) certainly helps.
> 
> I still don't know what mcount_enabled=1 should do.  I didn't see any 
> difference in the trace after enabling it.

if you build with CONFIG_FUNCTION_TRACING then you should see a trace of 
*every* function call done within the kernel. Warning: reading it can be 
very addictive ;-)

	Ingo
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