On Thu, Mar 25, 2004 at 05:47:20PM +1100, Benjamin Herrenschmidt wrote: > Hi ! > > I've start looking into the various issues of running > CONFIG_PREEMPT on ppc32. I found some problems, there > may be more, but here's a first patch that should apply on a > recent 2.6.x.
BTW, on non-pmac powerpc hardware, using PREEMPT with a cpu-driven sound driver (builtin via sound for example), result in sound problems, which looses the continuity of the sound. The same happened on my x86 box too last time i tested the preempt stuff, but it was some time ago. So, my question is, is this a bug, or something inherent in the way the preempt patch works, and there is no solution ? I understand that the preempt patch allows the kernel drivers to be preempted, thus resulting in the problematic behavior. Would it be possible to make it skip some drivers, or something such ? Friendly, Sven Luther
