On Mon, Mar 04, 2002 at 07:23:10PM -0500, Robert Love wrote:
> The same schedule_tail bug affecting 2.5 affects 2.4 with O(1). I.e.,
> 2.4.19-pre2-ac2.
>
> In recent O(1) scheduler releases, an optimization was made that removed
> schedule_tail from UP kernels. This causes the initial preempt_count of
> a new task, which starts at 1, to never decrement to zero and thus never
> become preemptible. CONFIG_PREEMPT requires schedule_tail, too.
>
> Users of 2.4+O(1)+preempt (i.e. -ac) should use this patch:
>
I believe you want to say that O(1)sched is in -ac, and this patch will add
preempt on top of that, not that preempt is already in -ac (unless I missed
something...)
Mike
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/
This archive was generated by hypermail 2b29 : Thu Mar 07 2002 - 21:00:37 EST