On Thu, Aug 23, 2012 at 6:52 PM, richard -rw- weinberger <
richard.weinber...@gmail.com> wrote:
> On Wed, Aug 22, 2012 at 6:34 PM, Dragos Diaconescu
> <diacones...@gmail.com> wrote:
> > at an interval of some nanoseconds and to use the ndelay function. I
> saw
> > that in the kernel implementation
> > for the uml there is no "delay_tsc"
> > function and there is only the "delay_loop" function. I am wondering
> why
> > the delay_tsc is not implemented. Is it not
> > possible to read the TSC register?
> > I would need this for having a nanosecond precision.
>
> You can access TSC from user space, so also UML can read it.
> There is no delay_tsc() in UML because nobody cared so far.
> Feel free to implement it and send me a patch. :-)
>
> I will try to implement a delay_tsc for UML andI will send you a patch.
Can you please
give me some directions? Shall I implement in the same manner as is
implemented in
/arch/x86/lib/delay.c . What are the big differences between this
implementation and in an implementation
for UML?
--
> Thanks,
> //richard
>
Many thanks,
Dragos
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