Re: old radeon latency problem still unfixed?

Benjamin Herrenschmidt
2006-02-27T00:18:27Z

On Sun, 2006-02-26 at 18:02 -0500, Lee Revell wrote:
> On Mon, 2006-02-27 at 09:53 +1100, Benjamin Herrenschmidt wrote:
> > Well... as soon as a 3d window appears, the server starts switching
> > all the time. there might be some spin loop in there remaining...
>
> But if the only lock taken in the radeon driver is the BKL, the
> SCHED_NORMAL X server should not be able to delay a SCHED_FIFO process
> right?

If you have preempt enabled, I suppose .... can we preempt with the BKL
nowadays ?