From: Gilles Chanteperdrix <gilles.chanteperdrix@xenomai.org>
To: Jan-Erik Lange <jan0385@domain.hid>
Cc: xenomai@xenomai.org
Subject: Re: [Xenomai-core] Question on preempting a linux task
Date: Thu, 12 Jan 2012 20:48:35 +0100 [thread overview]
Message-ID: <4F0F3913.8080205@domain.hid> (raw)
In-Reply-To: <BLU166-W26DCAEABA1B068354C2E0AC49F0@domain.hid>
On 01/12/2012 04:58 PM, Jan-Erik Lange wrote:
>
> Hello,
>
> Does the Xenomai scheduler has to interact with the Linux sheduler in
> order to preempt the tasks which are managed by it? Or is the Xenomai
> scheduler repealing the whole linux scheduler when it wants to run a
> task and and linux is running a task?
>
> Best regards Jan
No, xenomai may preempt linux in the middle of almost anything, that is
the whole point of being based on the adeos patch. However, when a task
needs to change scheduler, the two schedulers have to cooperate. If you
are interested in the details, see xnshadow_relax and xnshadow_harden in
ksrc/nucleus/shadow.c in xenomai sources.
--
Gilles.
prev parent reply other threads:[~2012-01-12 19:48 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-01-12 15:58 [Xenomai-core] Question on preempting a linux task Jan-Erik Lange
2012-01-12 19:48 ` Gilles Chanteperdrix [this message]
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