[Xenomai-help] Porting rtai/linux applications to xenomai/linux

[Xenomai-help] Porting rtai/linux applications to xenomai/linux

[韩守谦]

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    Hello everyone！I'm Porting rtai/linux applications to xenomai/linux. I want to swith  RTAI API to  Xeno's native API. Now I have a problem:we know,rtai provides a kernel module: math.ko, so we can use math funtions in our kernel modules of our applications ,but xenomai doesn't provide the same functions. what should I do? My kernel module of application need  some math functions.
    Maybe I should port the math.ko of rtai to xenomai or copy the definitions of needed math funtions to the source code of my kernel module ? 
    Do you own a good method to solve the problem?  I'm looking forward to your answers! Thank you!

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Re: [Xenomai-help] Porting rtai/linux applications to xenomai/linux

[Gilles Chanteperdrix]

韩守谦 wrote:
> 
> Hello everyone！ I'm Porting rtai/linux applications to xenomai/linux.
> I want to swith  RTAI API to  Xeno's native API. Now I have a
> problem:we know,rtai provides a kernel module: math.ko, so we can use
> math funtions in our kernel modules of our applications ,but xenomai
> doesn't provide the same functions. what should I do? My kernel
> module of application need  some math functions.

As we already told in former posts, we do not support the math module,
and do not intend to support it.

Using math functions in kernel-space is probably the sign of a design
which does too many things in kernel-space. Move the computations to
user-space. Besides, using hardware maths in kernel-space has become
harder, since the linux kernel compilation flags contain -msoft-float by
default.

-- 
                                          Gilles

Re: [Xenomai-help] Porting rtai/linux applications to xenomai/linux

[Gilles Chanteperdrix]

Gilles Chanteperdrix wrote:
> 韩守谦 wrote:
>> Hello everyone！ I'm Porting rtai/linux applications to xenomai/linux.
>> I want to swith  RTAI API to  Xeno's native API. Now I have a
>> problem:we know,rtai provides a kernel module: math.ko, so we can use
>> math funtions in our kernel modules of our applications ,but xenomai
>> doesn't provide the same functions. what should I do? My kernel
>> module of application need  some math functions.
> 
> As we already told in former posts, we do not support the math module,
> and do not intend to support it.

https://mail.gna.org/public/xenomai-help/2007-08/msg00237.html

-- 
                                          Gilles