SMP kernels on single processor machines

Benjamin Herrenschmidt benh at
Fri May 21 09:56:58 EST 2004

On Thu, 2004-05-20 at 21:48, Lee Braiden wrote:

> But I quit doing that at some point, after someone (authoritative, but I
> can't remember the details) pointed out that it added complexity,
> debugging issues, etc.  Given that I *already* have problems with PPC
> kernels -- latency/lockups, (preempting?), alsa sound, video res, etc.,
> I personally wouldn't go near this until I'm fairly confident that the
> other stuff is solid in its own right.
> But then, I'm just a luser, not a kernel maintainer ;D

Yah, well... CONFIG_PREEMPT gives you all the problems of SMP without
any benefit so .... :)


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