Re: Real-Time Preemption and UML?

From: Esben Nielsen (simlo_at_phys.au.dk)
Date: 02/08/05

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    Date:	Tue, 8 Feb 2005 00:14:29 +0100 (MET)
To: Jeff Dike <jdike@addtoit.com>

    Well, I keep trying a little bit more. In the mean while you can get some
    of the stuff I needed to change to at least get it to compile:

    One of the problems was use of direct architecture specific semaphores
    (which doesn't work under PREEMPT_REALTIME) and in places where a quick
    (maybe too quick) look at the code told me that completions ought to be
    used. Therefore I changed two semaphores to completions which compiled
    fine. I have tried the change on 2.6.11-rc2, and it seemed to work, but I
    have not tested it heavily.

    The patch is in an attachment - I hope the mail-list will alow that. It is
    simply too trouplesome otherwise when I am using Pine as mail client.

    Esben

    On Mon, 7 Feb 2005, Jeff Dike wrote:

    > simlo@phys.au.dk said:
    > > Hi, I am trying to compile and run UM-Linux with PREEMPT_REALTIME. I
    > > managed to get it to compile but it wont start - it simply stops
    > > somewhere in start_kernel() :-(
    >
    > I've never played with preemption on UML. No doubt it needs some work...
    >
    > Jeff
    >
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