Re: [PATCH] [RSDL-mm 0/6] RSDL cpu scheduler for -mm

Andrew Morton
2007-03-08T06:03:51Z

> On Thu, 8 Mar 2007 16:25:05 +1100 Con Kolivas <kernel@kolivas.org> wrote:
> > It also boots OK on a very similar but somewhat older Nocona machine.
> > Perhaps due to config changes:
> > http://userweb.kernel.org/~akpm/ck/config-ok.txt
>
> Ok I just remembered that not only did I expect the cpu task to never be
> scheduled and it _might_ be scheduled on sched_init, it is actually
> _consciously_ scheduled on hotplug cpu which I have no way of handling at the
> moment. On both your configs I noticed you had hotplug cpu enabled, but
> perhaps it isn't really being used on the more conservative config. So this
> is something I already know I need to handle. Did your ppc that had
> the "bitmap error" have hotplug cpu enabled? It might be an unrelated
> bug^Wphenomenon.

The powerpc config has CONFIG_HOTPLUG_CPU=n