Re: [Linux-ia64] Help with Ingo scheduler on IA64

Ingo Molnar
2002-01-17T21:17:42Z

On Thu, 17 Jan 2002, Erich Focht wrote:

> Hmm, doesn't work, yet with 2.4.17 :-(
>
> There must be some path where a rq->lock remains set, with some sort of
> print-eip-like tool I see lockups with
>
> load_balance vs. __wake_up
> __wake_up vs. sched_tick
> etc...

are you sure interrupts are properly disabled in all cases where the
runqueue is touched? Eg. sched_tick() relies on having IRQs disabled.

Ingo