linux-kernel - Re: -rt doesn't compile for UML

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Message-Id: <E1IxOzn-00075w-Gq@dorka.pomaz.szeredi.hu>
Date:	Wed, 28 Nov 2007 16:38:39 +0100
From:	Miklos Szeredi <miklos@...redi.hu>
To:	jdike@...toit.com
CC:	mingo@...e.hu, user-mode-linux-devel@...ts.sourceforge.net,
	linux-kernel@...r.kernel.org
Subject: Re: -rt doesn't compile for UML

> On Wed, Nov 28, 2007 at 02:09:45PM +0100, Miklos Szeredi wrote:
> > kernel/latency_trace.c:28:21: error: asm/rtc.h: No such file or directory
> 
> For things like this, look at the host's asm/foo.h and see if it's
> usable in UML (and contains things that you need).  If it is, just
> make a asm-um/foo.h which just includes "asm/arch/foo.h".

Yeah, I know that trick :)

It doesn't help in this case.  I've gotten as far as realizing that
the latency tracer needs the irqflags tracing
(Documentation/irqflags-tracing.tx) and that UML doesn't yet support
that.

Miklos
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