[Xenomai-help] configuration scripts doesn't work

[Xenomai-help] configuration scripts doesn't work

[Kim Chuan Lim]

./configure --enable-x86-sep --enable-x86-tsc

Xenomai: incompatible feature set
(required="sep tsc", present="sep", missing="tsc").

https://mail.gna.org/public/xenomai-help/2006-04/msg00198.html

I managed to fix it by following the same way.. can someone fix it in
the trunk or next distribution please.

Regards,
Kim Chuan.

Re: [Xenomai-help] configuration scripts doesn't work

[Gilles Chanteperdrix]

Kim Chuan Lim wrote:
 > ./configure --enable-x86-sep --enable-x86-tsc
 > 
 > Xenomai: incompatible feature set
 > (required="sep tsc", present="sep", missing="tsc").
 > 
 > https://mail.gna.org/public/xenomai-help/2006-04/msg00198.html
 > 
 > I managed to fix it by following the same way.. can someone fix it in
 > the trunk or next distribution please.

As explained in the mail you have found, there is nothing to be fixed in
Xenomai sources. What need to be fixed is the flags you passed to
configure.

-- 


					    Gilles Chanteperdrix.

Re: [Xenomai-help] configuration scripts doesn't work

[Kim Chuan Lim]

Hi Gilles,

The error message i get when try to run the latency test program..
warming up...
latency: failed to set periodic, code -110

The message you got initially told you that a discrepancy between the
CPU selected at kernel level and the user-support has been detected.
To fix this, you need to select a x86 CPU supporting a timestamp
counter when configuring your kernel, since by default, the configure
script assumes --enable-x86-tsc.


May i know what does it mean by "x86 CPU supporting a timestamp
counter when configuring your kernel"?

Regards,
Kim Chuan.


On 7/31/06, Gilles Chanteperdrix <gilles.chanteperdrix@xenomai.org> wrote:
> Kim Chuan Lim wrote:
>  > ./configure --enable-x86-sep --enable-x86-tsc
>  >
>  > Xenomai: incompatible feature set
>  > (required="sep tsc", present="sep", missing="tsc").
>  >
>  > https://mail.gna.org/public/xenomai-help/2006-04/msg00198.html
>  >
>  > I managed to fix it by following the same way.. can someone fix it in
>  > the trunk or next distribution please.
>
> As explained in the mail you have found, there is nothing to be fixed in
> Xenomai sources. What need to be fixed is the flags you passed to
> configure.
>
> --
>
>
>                                             Gilles Chanteperdrix.
>

Re: [Xenomai-help] configuration scripts doesn't work

[Gilles Chanteperdrix]

Kim Chuan Lim wrote:
 > Hi Gilles,
 > 
 > The error message i get when try to run the latency test program..
 > warming up...
 > latency: failed to set periodic, code -110
 > 
 > The message you got initially told you that a discrepancy between the
 > CPU selected at kernel level and the user-support has been detected.
 > To fix this, you need to select a x86 CPU supporting a timestamp
 > counter when configuring your kernel, since by default, the configure
 > script assumes --enable-x86-tsc.
 > 
 > 
 > May i know what does it mean by "x86 CPU supporting a timestamp
 > counter when configuring your kernel"?

When configuring your kernel, in the menu "Processor type and features",
select a CPU that supports the rdtsc instruction. That is, "pentium
classic" or anything better. In order to know if you have selected a CPU
that supports the rdtsc instruction, look for CONFIG_X86_TSC in the
.config file.
Alternatively, if the CPU you use really does not support the rdtsc
instruction, when you configure xenomai, pass the --disable-x86-tsc
flag.

-- 


					    Gilles Chanteperdrix.

Re: [Xenomai-help] configuration scripts doesn't work

[Jim Cromie]

Kim Chuan Lim wrote:
>
> May i know what does it mean by "x86 CPU supporting a timestamp
> counter when configuring your kernel"?
>
http://en.wikipedia.org/wiki/Time_Stamp_Counter
> Regards,
> Kim Chuan.
>