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Re: DSR and kernel mechanisms
- From: Jonathan Larmour <jlarmour at redhat dot com>
- To: Rafael Rodríguez Velilla <rrv at tid dot es>
- Cc: ecos <ecos-discuss at sources dot redhat dot com>
- Date: Sat, 01 Dec 2001 00:02:20 +0000
- Subject: Re: [ECOS] DSR and kernel mechanisms
- References: <3C04FF48.1A91AB8E@tid.es>
Rafael Rodríguez Velilla wrote:
>
> I think I've read in this list before that there are some limitations
> in the kernel facilities that can be accessed from a DSR.
>
> Which is this limitation?
>
> I suppose that all facilities that use a timer are not well handled in
> DSRs (the scheduler is locked and it won't produce a reschedule). Any
> other limitation?
Yes, don't use anything which will (or therefore, can) block. Don't use
anything that you want done in the context of a particular thread.
Jifl
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