* [Xenomai-help] Kernel or Module
@ 2011-02-17 14:08 Franz Engel
2011-02-17 16:21 ` Gilles Chanteperdrix
0 siblings, 1 reply; 2+ messages in thread
From: Franz Engel @ 2011-02-17 14:08 UTC (permalink / raw)
To: xenomai
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Hi,
Does it make any difference if I build the linux kernel with the posix skin inside or as a module. Currently I build all Realtime-Options in the kernel. So I load no modules and with lsmod there are no xeno* modules? Is it correct?
regards,
Franz
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^ permalink raw reply [flat|nested] 2+ messages in thread
* Re: [Xenomai-help] Kernel or Module
2011-02-17 14:08 [Xenomai-help] Kernel or Module Franz Engel
@ 2011-02-17 16:21 ` Gilles Chanteperdrix
0 siblings, 0 replies; 2+ messages in thread
From: Gilles Chanteperdrix @ 2011-02-17 16:21 UTC (permalink / raw)
To: Franz Engel; +Cc: xenomai
Franz Engel wrote:
> Hi,
>
> Does it make any difference if I build the linux kernel with the
> posix skin inside or as a module. Currently I build all
> Realtime-Options in the kernel. So I load no modules and with lsmod
> there are no xeno* modules? Is it correct?
>From a performance point of view, there may be a very little advantage
for in-kernel builds over module builds, on very low end machines. The
major difference is that you do not have to insmod anything before
launching your application. I do not see other differences, in fact. The
module build appears to me mostly as a legacy thing, because in the
past, Xenomai was built outside the kernel tree, and could only be build
as module.
--
Gilles.
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2011-02-17 14:08 [Xenomai-help] Kernel or Module Franz Engel
2011-02-17 16:21 ` Gilles Chanteperdrix
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