Re: [parisc-linux] Re: [PATCH] Fix the cpumask rewrite

From: Matthias Urlichs
Date: Mon Jun 28 2004 - 02:24:46 EST


Hi,

Chris Wedgwood:
> On Mon, Jun 28, 2004 at 08:55:08AM +0200, Matthias Urlichs wrote:
> > However, going over 5000 jiffies usages and re-doing all of them
> > doesn't happen overnight, and I do suspect that some people want
> > their embedded clockless systems to run Linux 2.4 or 2.6, rather
> > than 2.8...
>
> Such (embedded) hardware uses a very small percentage of the drivers
> we have in the tree, changing them as required seems quite sane and
> manageable in 2.7.x time-frame.
>
... especially since the 2.7 time-frame hasn't even started yet.

> I also do see why clock-less has to be embedded only, I suspect maybe
> the s390 could make use of this too? (Think of lots of mostly-idle
> Linux instances under VM).
>
True. The same argument holds for "real" Linux systems, which could
easily sit in HLT for hours instead of twiddling their thumbs $KERNEL_HZ
times per second.

> And, it's a 'new feature' so if people need to upgrade, then Life is
> tough. How sad.

I'm not contradicting you here. In fact, I seem to have taken the
<heretic> somewhat further than originally intended. :-/

--
Matthias Urlichs | {M:U} IT Design @ m-u-it.de | smurf@xxxxxxxxxxxxxx
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