On Tue, Aug 27, 2013 at 1:31 PM, Richard Weinberger <rich...@nod.at> wrote:
> Hi!
>
> Am 27.08.2013 19:51, schrieb Han:
> >
> > On Sat, Aug 24, 2013 at 6:42 AM, richard -rw- weinberger <
> richard.weinber...@gmail.com <mailto:richard.weinber...@gmail.com>> wrote:
> >
> > On Fri, Aug 23, 2013 at 8:35 PM, Han <keepsim...@gmail.com <mailto:
> keepsim...@gmail.com>> wrote:
> > > Hi,
> > >
> > > I am using Linux kernel 2.6.27 for building UML kernel. It seems
> like
> > > "arch/x86/kernel/tsc.c" is not built in and the symbol "cpu_khz"
> is not
> > > available.
> > >
> > > My question is: what's the reason that "tsc.c" not included in
> UML? Is
> > > there any config or simple way(patch?) to include it in UML?
> >
> > Simply because UML has no TSC.
> >
> >
> >
> > [Han] I don't really understand why UML has no TSC. As I know, TSC
> is accessible from user space process (on x86 at least) and I don't see any
> obvious reason why UML does not
> > support TSC. I might missed something.
>
> What exactly is the problem you are trying to solve?
>
> > I am trying to add TSC into UML kernel (2.6.27) for an experiment. Is
> that a practical thing to do at all?
>
> What exactly do you want to add? TSC as a clocksource to UML..?
>
my immediate need is to compile and run an application that uses "cpu_khz"
(which is part of tsc.c). I cannot modify the source code of the
application as I am not the owner.
thanks.
Han
>
> Thanks,
> //richard
>
>
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